adds basic traces using open traces

pkg/api/http_server.go

@@ -170,6 +170,7 @@ func (hs *HttpServer) newMacaron() *macaron.Macaron {
 	m.Use(hs.metricsEndpoint)
 	m.Use(middleware.GetContextHandler())
 	m.Use(middleware.Sessioner(&setting.SessionOptions))
+	m.Use(middleware.RequestTracing())
 	m.Use(middleware.OrgRedirect())
 
 	// needs to be after context handler

pkg/cmd/grafana-server/server.go

@@ -24,6 +24,10 @@ import (
 	"github.com/grafana/grafana/pkg/services/search"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/social"
+	opentracing "github.com/opentracing/opentracing-go"
+	jaeger "github.com/uber/jaeger-client-go"
+	jaegercfg "github.com/uber/jaeger-client-go/config"
+	jaegerlog "github.com/uber/jaeger-client-go/log"
 )
 
 func NewGrafanaServer() models.GrafanaServer {
@@ -61,6 +65,35 @@ func (g *GrafanaServerImpl) Start() {
 	eventpublisher.Init()
 	plugins.Init()
 
+	//localhost:5775
+
+	cfg := jaegercfg.Configuration{
+		Disabled: false,
+		Sampler: &jaegercfg.SamplerConfig{
+			Type:  jaeger.SamplerTypeConst,
+			Param: 1,
+		},
+		Reporter: &jaegercfg.ReporterConfig{
+			LogSpans:           false,
+			LocalAgentHostPort: "localhost:5775",
+		},
+	}
+
+	jLogger := jaegerlog.StdLogger
+
+	tracer, closer, err := cfg.New(
+		"grafana",
+		jaegercfg.Logger(jLogger),
+	)
+	if err != nil {
+		g.log.Error("tracing", "error", err)
+		g.Shutdown(1, "Startup failed")
+		return
+	}
+
+	opentracing.InitGlobalTracer(tracer)
+	defer closer.Close()
+
 	// init alerting
 	if setting.AlertingEnabled && setting.ExecuteAlerts {
 		engine := alerting.NewEngine()
@@ -72,7 +105,7 @@ func (g *GrafanaServerImpl) Start() {
 	g.childRoutines.Go(func() error { return cleanUpService.Run(g.context) })
 
 	if err := notifications.Init(); err != nil {
-		g.log.Error("Notification service failed to initialize", "erro", err)
+		g.log.Error("Notification service failed to initialize", "error", err)
 		g.Shutdown(1, "Startup failed")
 		return
 	}

pkg/middleware/request_tracing.go

@@ -0,0 +1,42 @@
+package middleware
+
+import (
+	"net/http"
+	"time"
+
+	opentracing "github.com/opentracing/opentracing-go"
+	tlog "github.com/opentracing/opentracing-go/log"
+
+	"gopkg.in/macaron.v1"
+)
+
+func RequestTracing() macaron.Handler {
+	return func(res http.ResponseWriter, req *http.Request, c *macaron.Context) {
+		rw := res.(macaron.ResponseWriter)
+
+		var span opentracing.Span
+		opName := req.URL.Path
+		carrier := opentracing.HTTPHeadersCarrier(req.Header)
+
+		wireContext, err := opentracing.GlobalTracer().Extract(
+			opentracing.HTTPHeaders, carrier)
+		if err != nil {
+			span = opentracing.StartSpan(opName)
+		} else {
+			span = opentracing.StartSpan(opName, opentracing.ChildOf(wireContext))
+		}
+		defer span.Finish()
+
+		ctx := opentracing.ContextWithSpan(req.Context(), span)
+		req = req.WithContext(ctx)
+		start := time.Now()
+
+		c.Next()
+
+		status := rw.Status()
+
+		span.LogFields(
+			tlog.Int("http.status_code", status),
+			tlog.Float64("waited.millis", float64(time.Since(start)/time.Millisecond)))
+	}
+}

pkg/services/alerting/engine.go

@@ -4,6 +4,9 @@ import (
 	"context"
 	"time"
 
+	"github.com/opentracing/opentracing-go"
+	tlog "github.com/opentracing/opentracing-go/log"
+
 	"github.com/benbjohnson/clock"
 	"github.com/grafana/grafana/pkg/log"
 	"golang.org/x/sync/errgroup"
@@ -105,6 +108,10 @@ func (e *Engine) processJob(grafanaCtx context.Context, job *Job) error {
 
 	done := make(chan struct{})
 
+	span := opentracing.StartSpan("alerting")
+	alertCtx = opentracing.ContextWithSpan(alertCtx, span)
+	evalContext.Ctx = alertCtx
+
 	go func() {
 		defer func() {
 			if err := recover(); err != nil {
@@ -115,7 +122,14 @@ func (e *Engine) processJob(grafanaCtx context.Context, job *Job) error {
 
 		e.evalHandler.Eval(evalContext)
 		e.resultHandler.Handle(evalContext)
+		span.LogFields(
+			tlog.Int64("alertId", evalContext.Rule.Id),
+			tlog.Int64("dashboardId", evalContext.Rule.DashboardId),
+			tlog.Bool("firing", evalContext.Firing),
+		)
+
 		close(done)
+		span.Finish()
 	}()
 
 	var err error = nil

vendor/github.com/apache/thrift/LICENSE

@@ -0,0 +1,239 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+--------------------------------------------------
+SOFTWARE DISTRIBUTED WITH THRIFT:
+
+The Apache Thrift software includes a number of subcomponents with
+separate copyright notices and license terms. Your use of the source
+code for the these subcomponents is subject to the terms and
+conditions of the following licenses.
+
+--------------------------------------------------
+Portions of the following files are licensed under the MIT License:
+
+  lib/erl/src/Makefile.am
+
+Please see doc/otp-base-license.txt for the full terms of this license.
+
+--------------------------------------------------
+For the aclocal/ax_boost_base.m4 and contrib/fb303/aclocal/ax_boost_base.m4 components:
+
+#   Copyright (c) 2007 Thomas Porschberg <thomas@randspringer.de>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+--------------------------------------------------
+For the lib/nodejs/lib/thrift/json_parse.js:
+
+/*
+    json_parse.js
+    2015-05-02
+    Public Domain.
+    NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+*/
+(By Douglas Crockford <douglas@crockford.com>)
+--------------------------------------------------

vendor/github.com/apache/thrift/NOTICE

@@ -0,0 +1,5 @@
+Apache Thrift
+Copyright 2006-2010 The Apache Software Foundation.
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).

vendor/github.com/apache/thrift/lib/go/thrift/application_exception.go

@@ -0,0 +1,142 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+const (
+	UNKNOWN_APPLICATION_EXCEPTION  = 0
+	UNKNOWN_METHOD                 = 1
+	INVALID_MESSAGE_TYPE_EXCEPTION = 2
+	WRONG_METHOD_NAME              = 3
+	BAD_SEQUENCE_ID                = 4
+	MISSING_RESULT                 = 5
+	INTERNAL_ERROR                 = 6
+	PROTOCOL_ERROR                 = 7
+)
+
+// Application level Thrift exception
+type TApplicationException interface {
+	TException
+	TypeId() int32
+	Read(iprot TProtocol) (TApplicationException, error)
+	Write(oprot TProtocol) error
+}
+
+type tApplicationException struct {
+	message string
+	type_   int32
+}
+
+func (e tApplicationException) Error() string {
+	return e.message
+}
+
+func NewTApplicationException(type_ int32, message string) TApplicationException {
+	return &tApplicationException{message, type_}
+}
+
+func (p *tApplicationException) TypeId() int32 {
+	return p.type_
+}
+
+func (p *tApplicationException) Read(iprot TProtocol) (TApplicationException, error) {
+	_, err := iprot.ReadStructBegin()
+	if err != nil {
+		return nil, err
+	}
+
+	message := ""
+	type_ := int32(UNKNOWN_APPLICATION_EXCEPTION)
+
+	for {
+		_, ttype, id, err := iprot.ReadFieldBegin()
+		if err != nil {
+			return nil, err
+		}
+		if ttype == STOP {
+			break
+		}
+		switch id {
+		case 1:
+			if ttype == STRING {
+				if message, err = iprot.ReadString(); err != nil {
+					return nil, err
+				}
+			} else {
+				if err = SkipDefaultDepth(iprot, ttype); err != nil {
+					return nil, err
+				}
+			}
+		case 2:
+			if ttype == I32 {
+				if type_, err = iprot.ReadI32(); err != nil {
+					return nil, err
+				}
+			} else {
+				if err = SkipDefaultDepth(iprot, ttype); err != nil {
+					return nil, err
+				}
+			}
+		default:
+			if err = SkipDefaultDepth(iprot, ttype); err != nil {
+				return nil, err
+			}
+		}
+		if err = iprot.ReadFieldEnd(); err != nil {
+			return nil, err
+		}
+	}
+	return NewTApplicationException(type_, message), iprot.ReadStructEnd()
+}
+
+func (p *tApplicationException) Write(oprot TProtocol) (err error) {
+	err = oprot.WriteStructBegin("TApplicationException")
+	if len(p.Error()) > 0 {
+		err = oprot.WriteFieldBegin("message", STRING, 1)
+		if err != nil {
+			return
+		}
+		err = oprot.WriteString(p.Error())
+		if err != nil {
+			return
+		}
+		err = oprot.WriteFieldEnd()
+		if err != nil {
+			return
+		}
+	}
+	err = oprot.WriteFieldBegin("type", I32, 2)
+	if err != nil {
+		return
+	}
+	err = oprot.WriteI32(p.type_)
+	if err != nil {
+		return
+	}
+	err = oprot.WriteFieldEnd()
+	if err != nil {
+		return
+	}
+	err = oprot.WriteFieldStop()
+	if err != nil {
+		return
+	}
+	err = oprot.WriteStructEnd()
+	return
+}

vendor/github.com/apache/thrift/lib/go/thrift/binary_protocol.go

@@ -0,0 +1,514 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+)
+
+type TBinaryProtocol struct {
+	trans         TRichTransport
+	origTransport TTransport
+	reader        io.Reader
+	writer        io.Writer
+	strictRead    bool
+	strictWrite   bool
+	buffer        [64]byte
+}
+
+type TBinaryProtocolFactory struct {
+	strictRead  bool
+	strictWrite bool
+}
+
+func NewTBinaryProtocolTransport(t TTransport) *TBinaryProtocol {
+	return NewTBinaryProtocol(t, false, true)
+}
+
+func NewTBinaryProtocol(t TTransport, strictRead, strictWrite bool) *TBinaryProtocol {
+	p := &TBinaryProtocol{origTransport: t, strictRead: strictRead, strictWrite: strictWrite}
+	if et, ok := t.(TRichTransport); ok {
+		p.trans = et
+	} else {
+		p.trans = NewTRichTransport(t)
+	}
+	p.reader = p.trans
+	p.writer = p.trans
+	return p
+}
+
+func NewTBinaryProtocolFactoryDefault() *TBinaryProtocolFactory {
+	return NewTBinaryProtocolFactory(false, true)
+}
+
+func NewTBinaryProtocolFactory(strictRead, strictWrite bool) *TBinaryProtocolFactory {
+	return &TBinaryProtocolFactory{strictRead: strictRead, strictWrite: strictWrite}
+}
+
+func (p *TBinaryProtocolFactory) GetProtocol(t TTransport) TProtocol {
+	return NewTBinaryProtocol(t, p.strictRead, p.strictWrite)
+}
+
+/**
+ * Writing Methods
+ */
+
+func (p *TBinaryProtocol) WriteMessageBegin(name string, typeId TMessageType, seqId int32) error {
+	if p.strictWrite {
+		version := uint32(VERSION_1) | uint32(typeId)
+		e := p.WriteI32(int32(version))
+		if e != nil {
+			return e
+		}
+		e = p.WriteString(name)
+		if e != nil {
+			return e
+		}
+		e = p.WriteI32(seqId)
+		return e
+	} else {
+		e := p.WriteString(name)
+		if e != nil {
+			return e
+		}
+		e = p.WriteByte(int8(typeId))
+		if e != nil {
+			return e
+		}
+		e = p.WriteI32(seqId)
+		return e
+	}
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteMessageEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteStructBegin(name string) error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteStructEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteFieldBegin(name string, typeId TType, id int16) error {
+	e := p.WriteByte(int8(typeId))
+	if e != nil {
+		return e
+	}
+	e = p.WriteI16(id)
+	return e
+}
+
+func (p *TBinaryProtocol) WriteFieldEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteFieldStop() error {
+	e := p.WriteByte(STOP)
+	return e
+}
+
+func (p *TBinaryProtocol) WriteMapBegin(keyType TType, valueType TType, size int) error {
+	e := p.WriteByte(int8(keyType))
+	if e != nil {
+		return e
+	}
+	e = p.WriteByte(int8(valueType))
+	if e != nil {
+		return e
+	}
+	e = p.WriteI32(int32(size))
+	return e
+}
+
+func (p *TBinaryProtocol) WriteMapEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteListBegin(elemType TType, size int) error {
+	e := p.WriteByte(int8(elemType))
+	if e != nil {
+		return e
+	}
+	e = p.WriteI32(int32(size))
+	return e
+}
+
+func (p *TBinaryProtocol) WriteListEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteSetBegin(elemType TType, size int) error {
+	e := p.WriteByte(int8(elemType))
+	if e != nil {
+		return e
+	}
+	e = p.WriteI32(int32(size))
+	return e
+}
+
+func (p *TBinaryProtocol) WriteSetEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) WriteBool(value bool) error {
+	if value {
+		return p.WriteByte(1)
+	}
+	return p.WriteByte(0)
+}
+
+func (p *TBinaryProtocol) WriteByte(value int8) error {
+	e := p.trans.WriteByte(byte(value))
+	return NewTProtocolException(e)
+}
+
+func (p *TBinaryProtocol) WriteI16(value int16) error {
+	v := p.buffer[0:2]
+	binary.BigEndian.PutUint16(v, uint16(value))
+	_, e := p.writer.Write(v)
+	return NewTProtocolException(e)
+}
+
+func (p *TBinaryProtocol) WriteI32(value int32) error {
+	v := p.buffer[0:4]
+	binary.BigEndian.PutUint32(v, uint32(value))
+	_, e := p.writer.Write(v)
+	return NewTProtocolException(e)
+}
+
+func (p *TBinaryProtocol) WriteI64(value int64) error {
+	v := p.buffer[0:8]
+	binary.BigEndian.PutUint64(v, uint64(value))
+	_, err := p.writer.Write(v)
+	return NewTProtocolException(err)
+}
+
+func (p *TBinaryProtocol) WriteDouble(value float64) error {
+	return p.WriteI64(int64(math.Float64bits(value)))
+}
+
+func (p *TBinaryProtocol) WriteString(value string) error {
+	e := p.WriteI32(int32(len(value)))
+	if e != nil {
+		return e
+	}
+	_, err := p.trans.WriteString(value)
+	return NewTProtocolException(err)
+}
+
+func (p *TBinaryProtocol) WriteBinary(value []byte) error {
+	e := p.WriteI32(int32(len(value)))
+	if e != nil {
+		return e
+	}
+	_, err := p.writer.Write(value)
+	return NewTProtocolException(err)
+}
+
+/**
+ * Reading methods
+ */
+
+func (p *TBinaryProtocol) ReadMessageBegin() (name string, typeId TMessageType, seqId int32, err error) {
+	size, e := p.ReadI32()
+	if e != nil {
+		return "", typeId, 0, NewTProtocolException(e)
+	}
+	if size < 0 {
+		typeId = TMessageType(size & 0x0ff)
+		version := int64(int64(size) & VERSION_MASK)
+		if version != VERSION_1 {
+			return name, typeId, seqId, NewTProtocolExceptionWithType(BAD_VERSION, fmt.Errorf("Bad version in ReadMessageBegin"))
+		}
+		name, e = p.ReadString()
+		if e != nil {
+			return name, typeId, seqId, NewTProtocolException(e)
+		}
+		seqId, e = p.ReadI32()
+		if e != nil {
+			return name, typeId, seqId, NewTProtocolException(e)
+		}
+		return name, typeId, seqId, nil
+	}
+	if p.strictRead {
+		return name, typeId, seqId, NewTProtocolExceptionWithType(BAD_VERSION, fmt.Errorf("Missing version in ReadMessageBegin"))
+	}
+	name, e2 := p.readStringBody(size)
+	if e2 != nil {
+		return name, typeId, seqId, e2
+	}
+	b, e3 := p.ReadByte()
+	if e3 != nil {
+		return name, typeId, seqId, e3
+	}
+	typeId = TMessageType(b)
+	seqId, e4 := p.ReadI32()
+	if e4 != nil {
+		return name, typeId, seqId, e4
+	}
+	return name, typeId, seqId, nil
+}
+
+func (p *TBinaryProtocol) ReadMessageEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) ReadStructBegin() (name string, err error) {
+	return
+}
+
+func (p *TBinaryProtocol) ReadStructEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) ReadFieldBegin() (name string, typeId TType, seqId int16, err error) {
+	t, err := p.ReadByte()
+	typeId = TType(t)
+	if err != nil {
+		return name, typeId, seqId, err
+	}
+	if t != STOP {
+		seqId, err = p.ReadI16()
+	}
+	return name, typeId, seqId, err
+}
+
+func (p *TBinaryProtocol) ReadFieldEnd() error {
+	return nil
+}
+
+var invalidDataLength = NewTProtocolExceptionWithType(INVALID_DATA, errors.New("Invalid data length"))
+
+func (p *TBinaryProtocol) ReadMapBegin() (kType, vType TType, size int, err error) {
+	k, e := p.ReadByte()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	kType = TType(k)
+	v, e := p.ReadByte()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	vType = TType(v)
+	size32, e := p.ReadI32()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	if size32 < 0 {
+		err = invalidDataLength
+		return
+	}
+	size = int(size32)
+	return kType, vType, size, nil
+}
+
+func (p *TBinaryProtocol) ReadMapEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) ReadListBegin() (elemType TType, size int, err error) {
+	b, e := p.ReadByte()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	elemType = TType(b)
+	size32, e := p.ReadI32()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	if size32 < 0 {
+		err = invalidDataLength
+		return
+	}
+	size = int(size32)
+
+	return
+}
+
+func (p *TBinaryProtocol) ReadListEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) ReadSetBegin() (elemType TType, size int, err error) {
+	b, e := p.ReadByte()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	elemType = TType(b)
+	size32, e := p.ReadI32()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	if size32 < 0 {
+		err = invalidDataLength
+		return
+	}
+	size = int(size32)
+	return elemType, size, nil
+}
+
+func (p *TBinaryProtocol) ReadSetEnd() error {
+	return nil
+}
+
+func (p *TBinaryProtocol) ReadBool() (bool, error) {
+	b, e := p.ReadByte()
+	v := true
+	if b != 1 {
+		v = false
+	}
+	return v, e
+}
+
+func (p *TBinaryProtocol) ReadByte() (int8, error) {
+	v, err := p.trans.ReadByte()
+	return int8(v), err
+}
+
+func (p *TBinaryProtocol) ReadI16() (value int16, err error) {
+	buf := p.buffer[0:2]
+	err = p.readAll(buf)
+	value = int16(binary.BigEndian.Uint16(buf))
+	return value, err
+}
+
+func (p *TBinaryProtocol) ReadI32() (value int32, err error) {
+	buf := p.buffer[0:4]
+	err = p.readAll(buf)
+	value = int32(binary.BigEndian.Uint32(buf))
+	return value, err
+}
+
+func (p *TBinaryProtocol) ReadI64() (value int64, err error) {
+	buf := p.buffer[0:8]
+	err = p.readAll(buf)
+	value = int64(binary.BigEndian.Uint64(buf))
+	return value, err
+}
+
+func (p *TBinaryProtocol) ReadDouble() (value float64, err error) {
+	buf := p.buffer[0:8]
+	err = p.readAll(buf)
+	value = math.Float64frombits(binary.BigEndian.Uint64(buf))
+	return value, err
+}
+
+func (p *TBinaryProtocol) ReadString() (value string, err error) {
+	size, e := p.ReadI32()
+	if e != nil {
+		return "", e
+	}
+	if size < 0 {
+		err = invalidDataLength
+		return
+	}
+
+	return p.readStringBody(size)
+}
+
+func (p *TBinaryProtocol) ReadBinary() ([]byte, error) {
+	size, e := p.ReadI32()
+	if e != nil {
+		return nil, e
+	}
+	if size < 0 {
+		return nil, invalidDataLength
+	}
+	if uint64(size) > p.trans.RemainingBytes() {
+		return nil, invalidDataLength
+	}
+
+	isize := int(size)
+	buf := make([]byte, isize)
+	_, err := io.ReadFull(p.trans, buf)
+	return buf, NewTProtocolException(err)
+}
+
+func (p *TBinaryProtocol) Flush() (err error) {
+	return NewTProtocolException(p.trans.Flush())
+}
+
+func (p *TBinaryProtocol) Skip(fieldType TType) (err error) {
+	return SkipDefaultDepth(p, fieldType)
+}
+
+func (p *TBinaryProtocol) Transport() TTransport {
+	return p.origTransport
+}
+
+func (p *TBinaryProtocol) readAll(buf []byte) error {
+	_, err := io.ReadFull(p.reader, buf)
+	return NewTProtocolException(err)
+}
+
+const readLimit = 32768
+
+func (p *TBinaryProtocol) readStringBody(size int32) (value string, err error) {
+	if size < 0 {
+		return "", nil
+	}
+	if uint64(size) > p.trans.RemainingBytes() {
+		return "", invalidDataLength
+	}
+
+	var (
+		buf bytes.Buffer
+		e   error
+		b   []byte
+	)
+
+	switch {
+	case int(size) <= len(p.buffer):
+		b = p.buffer[:size] // avoids allocation for small reads
+	case int(size) < readLimit:
+		b = make([]byte, size)
+	default:
+		b = make([]byte, readLimit)
+	}
+
+	for size > 0 {
+		_, e = io.ReadFull(p.trans, b)
+		buf.Write(b)
+		if e != nil {
+			break
+		}
+		size -= readLimit
+		if size < readLimit && size > 0 {
+			b = b[:size]
+		}
+	}
+	return buf.String(), NewTProtocolException(e)
+}

vendor/github.com/apache/thrift/lib/go/thrift/buffered_transport.go

@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bufio"
+)
+
+type TBufferedTransportFactory struct {
+	size int
+}
+
+type TBufferedTransport struct {
+	bufio.ReadWriter
+	tp TTransport
+}
+
+func (p *TBufferedTransportFactory) GetTransport(trans TTransport) TTransport {
+	return NewTBufferedTransport(trans, p.size)
+}
+
+func NewTBufferedTransportFactory(bufferSize int) *TBufferedTransportFactory {
+	return &TBufferedTransportFactory{size: bufferSize}
+}
+
+func NewTBufferedTransport(trans TTransport, bufferSize int) *TBufferedTransport {
+	return &TBufferedTransport{
+		ReadWriter: bufio.ReadWriter{
+			Reader: bufio.NewReaderSize(trans, bufferSize),
+			Writer: bufio.NewWriterSize(trans, bufferSize),
+		},
+		tp: trans,
+	}
+}
+
+func (p *TBufferedTransport) IsOpen() bool {
+	return p.tp.IsOpen()
+}
+
+func (p *TBufferedTransport) Open() (err error) {
+	return p.tp.Open()
+}
+
+func (p *TBufferedTransport) Close() (err error) {
+	return p.tp.Close()
+}
+
+func (p *TBufferedTransport) Read(b []byte) (int, error) {
+	n, err := p.ReadWriter.Read(b)
+	if err != nil {
+		p.ReadWriter.Reader.Reset(p.tp)
+	}
+	return n, err
+}
+
+func (p *TBufferedTransport) Write(b []byte) (int, error) {
+	n, err := p.ReadWriter.Write(b)
+	if err != nil {
+		p.ReadWriter.Writer.Reset(p.tp)
+	}
+	return n, err
+}
+
+func (p *TBufferedTransport) Flush() error {
+	if err := p.ReadWriter.Flush(); err != nil {
+		p.ReadWriter.Writer.Reset(p.tp)
+		return err
+	}
+	return p.tp.Flush()
+}
+
+func (p *TBufferedTransport) RemainingBytes() (num_bytes uint64) {
+	return p.tp.RemainingBytes()
+}

vendor/github.com/apache/thrift/lib/go/thrift/compact_protocol.go

@@ -0,0 +1,815 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"encoding/binary"
+	"fmt"
+	"io"
+	"math"
+)
+
+const (
+	COMPACT_PROTOCOL_ID       = 0x082
+	COMPACT_VERSION           = 1
+	COMPACT_VERSION_MASK      = 0x1f
+	COMPACT_TYPE_MASK         = 0x0E0
+	COMPACT_TYPE_BITS         = 0x07
+	COMPACT_TYPE_SHIFT_AMOUNT = 5
+)
+
+type tCompactType byte
+
+const (
+	COMPACT_BOOLEAN_TRUE  = 0x01
+	COMPACT_BOOLEAN_FALSE = 0x02
+	COMPACT_BYTE          = 0x03
+	COMPACT_I16           = 0x04
+	COMPACT_I32           = 0x05
+	COMPACT_I64           = 0x06
+	COMPACT_DOUBLE        = 0x07
+	COMPACT_BINARY        = 0x08
+	COMPACT_LIST          = 0x09
+	COMPACT_SET           = 0x0A
+	COMPACT_MAP           = 0x0B
+	COMPACT_STRUCT        = 0x0C
+)
+
+var (
+	ttypeToCompactType map[TType]tCompactType
+)
+
+func init() {
+	ttypeToCompactType = map[TType]tCompactType{
+		STOP:   STOP,
+		BOOL:   COMPACT_BOOLEAN_TRUE,
+		BYTE:   COMPACT_BYTE,
+		I16:    COMPACT_I16,
+		I32:    COMPACT_I32,
+		I64:    COMPACT_I64,
+		DOUBLE: COMPACT_DOUBLE,
+		STRING: COMPACT_BINARY,
+		LIST:   COMPACT_LIST,
+		SET:    COMPACT_SET,
+		MAP:    COMPACT_MAP,
+		STRUCT: COMPACT_STRUCT,
+	}
+}
+
+type TCompactProtocolFactory struct{}
+
+func NewTCompactProtocolFactory() *TCompactProtocolFactory {
+	return &TCompactProtocolFactory{}
+}
+
+func (p *TCompactProtocolFactory) GetProtocol(trans TTransport) TProtocol {
+	return NewTCompactProtocol(trans)
+}
+
+type TCompactProtocol struct {
+	trans         TRichTransport
+	origTransport TTransport
+
+	// Used to keep track of the last field for the current and previous structs,
+	// so we can do the delta stuff.
+	lastField   []int
+	lastFieldId int
+
+	// If we encounter a boolean field begin, save the TField here so it can
+	// have the value incorporated.
+	booleanFieldName    string
+	booleanFieldId      int16
+	booleanFieldPending bool
+
+	// If we read a field header, and it's a boolean field, save the boolean
+	// value here so that readBool can use it.
+	boolValue          bool
+	boolValueIsNotNull bool
+	buffer             [64]byte
+}
+
+// Create a TCompactProtocol given a TTransport
+func NewTCompactProtocol(trans TTransport) *TCompactProtocol {
+	p := &TCompactProtocol{origTransport: trans, lastField: []int{}}
+	if et, ok := trans.(TRichTransport); ok {
+		p.trans = et
+	} else {
+		p.trans = NewTRichTransport(trans)
+	}
+
+	return p
+
+}
+
+//
+// Public Writing methods.
+//
+
+// Write a message header to the wire. Compact Protocol messages contain the
+// protocol version so we can migrate forwards in the future if need be.
+func (p *TCompactProtocol) WriteMessageBegin(name string, typeId TMessageType, seqid int32) error {
+	err := p.writeByteDirect(COMPACT_PROTOCOL_ID)
+	if err != nil {
+		return NewTProtocolException(err)
+	}
+	err = p.writeByteDirect((COMPACT_VERSION & COMPACT_VERSION_MASK) | ((byte(typeId) << COMPACT_TYPE_SHIFT_AMOUNT) & COMPACT_TYPE_MASK))
+	if err != nil {
+		return NewTProtocolException(err)
+	}
+	_, err = p.writeVarint32(seqid)
+	if err != nil {
+		return NewTProtocolException(err)
+	}
+	e := p.WriteString(name)
+	return e
+
+}
+
+func (p *TCompactProtocol) WriteMessageEnd() error { return nil }
+
+// Write a struct begin. This doesn't actually put anything on the wire. We
+// use it as an opportunity to put special placeholder markers on the field
+// stack so we can get the field id deltas correct.
+func (p *TCompactProtocol) WriteStructBegin(name string) error {
+	p.lastField = append(p.lastField, p.lastFieldId)
+	p.lastFieldId = 0
+	return nil
+}
+
+// Write a struct end. This doesn't actually put anything on the wire. We use
+// this as an opportunity to pop the last field from the current struct off
+// of the field stack.
+func (p *TCompactProtocol) WriteStructEnd() error {
+	p.lastFieldId = p.lastField[len(p.lastField)-1]
+	p.lastField = p.lastField[:len(p.lastField)-1]
+	return nil
+}
+
+func (p *TCompactProtocol) WriteFieldBegin(name string, typeId TType, id int16) error {
+	if typeId == BOOL {
+		// we want to possibly include the value, so we'll wait.
+		p.booleanFieldName, p.booleanFieldId, p.booleanFieldPending = name, id, true
+		return nil
+	}
+	_, err := p.writeFieldBeginInternal(name, typeId, id, 0xFF)
+	return NewTProtocolException(err)
+}
+
+// The workhorse of writeFieldBegin. It has the option of doing a
+// 'type override' of the type header. This is used specifically in the
+// boolean field case.
+func (p *TCompactProtocol) writeFieldBeginInternal(name string, typeId TType, id int16, typeOverride byte) (int, error) {
+	// short lastField = lastField_.pop();
+
+	// if there's a type override, use that.
+	var typeToWrite byte
+	if typeOverride == 0xFF {
+		typeToWrite = byte(p.getCompactType(typeId))
+	} else {
+		typeToWrite = typeOverride
+	}
+	// check if we can use delta encoding for the field id
+	fieldId := int(id)
+	written := 0
+	if fieldId > p.lastFieldId && fieldId-p.lastFieldId <= 15 {
+		// write them together
+		err := p.writeByteDirect(byte((fieldId-p.lastFieldId)<<4) | typeToWrite)
+		if err != nil {
+			return 0, err
+		}
+	} else {
+		// write them separate
+		err := p.writeByteDirect(typeToWrite)
+		if err != nil {
+			return 0, err
+		}
+		err = p.WriteI16(id)
+		written = 1 + 2
+		if err != nil {
+			return 0, err
+		}
+	}
+
+	p.lastFieldId = fieldId
+	// p.lastField.Push(field.id);
+	return written, nil
+}
+
+func (p *TCompactProtocol) WriteFieldEnd() error { return nil }
+
+func (p *TCompactProtocol) WriteFieldStop() error {
+	err := p.writeByteDirect(STOP)
+	return NewTProtocolException(err)
+}
+
+func (p *TCompactProtocol) WriteMapBegin(keyType TType, valueType TType, size int) error {
+	if size == 0 {
+		err := p.writeByteDirect(0)
+		return NewTProtocolException(err)
+	}
+	_, err := p.writeVarint32(int32(size))
+	if err != nil {
+		return NewTProtocolException(err)
+	}
+	err = p.writeByteDirect(byte(p.getCompactType(keyType))<<4 | byte(p.getCompactType(valueType)))
+	return NewTProtocolException(err)
+}
+
+func (p *TCompactProtocol) WriteMapEnd() error { return nil }
+
+// Write a list header.
+func (p *TCompactProtocol) WriteListBegin(elemType TType, size int) error {
+	_, err := p.writeCollectionBegin(elemType, size)
+	return NewTProtocolException(err)
+}
+
+func (p *TCompactProtocol) WriteListEnd() error { return nil }
+
+// Write a set header.
+func (p *TCompactProtocol) WriteSetBegin(elemType TType, size int) error {
+	_, err := p.writeCollectionBegin(elemType, size)
+	return NewTProtocolException(err)
+}
+
+func (p *TCompactProtocol) WriteSetEnd() error { return nil }
+
+func (p *TCompactProtocol) WriteBool(value bool) error {
+	v := byte(COMPACT_BOOLEAN_FALSE)
+	if value {
+		v = byte(COMPACT_BOOLEAN_TRUE)
+	}
+	if p.booleanFieldPending {
+		// we haven't written the field header yet
+		_, err := p.writeFieldBeginInternal(p.booleanFieldName, BOOL, p.booleanFieldId, v)
+		p.booleanFieldPending = false
+		return NewTProtocolException(err)
+	}
+	// we're not part of a field, so just write the value.
+	err := p.writeByteDirect(v)
+	return NewTProtocolException(err)
+}
+
+// Write a byte. Nothing to see here!
+func (p *TCompactProtocol) WriteByte(value int8) error {
+	err := p.writeByteDirect(byte(value))
+	return NewTProtocolException(err)
+}
+
+// Write an I16 as a zigzag varint.
+func (p *TCompactProtocol) WriteI16(value int16) error {
+	_, err := p.writeVarint32(p.int32ToZigzag(int32(value)))
+	return NewTProtocolException(err)
+}
+
+// Write an i32 as a zigzag varint.
+func (p *TCompactProtocol) WriteI32(value int32) error {
+	_, err := p.writeVarint32(p.int32ToZigzag(value))
+	return NewTProtocolException(err)
+}
+
+// Write an i64 as a zigzag varint.
+func (p *TCompactProtocol) WriteI64(value int64) error {
+	_, err := p.writeVarint64(p.int64ToZigzag(value))
+	return NewTProtocolException(err)
+}
+
+// Write a double to the wire as 8 bytes.
+func (p *TCompactProtocol) WriteDouble(value float64) error {
+	buf := p.buffer[0:8]
+	binary.LittleEndian.PutUint64(buf, math.Float64bits(value))
+	_, err := p.trans.Write(buf)
+	return NewTProtocolException(err)
+}
+
+// Write a string to the wire with a varint size preceding.
+func (p *TCompactProtocol) WriteString(value string) error {
+	_, e := p.writeVarint32(int32(len(value)))
+	if e != nil {
+		return NewTProtocolException(e)
+	}
+	if len(value) > 0 {
+	}
+	_, e = p.trans.WriteString(value)
+	return e
+}
+
+// Write a byte array, using a varint for the size.
+func (p *TCompactProtocol) WriteBinary(bin []byte) error {
+	_, e := p.writeVarint32(int32(len(bin)))
+	if e != nil {
+		return NewTProtocolException(e)
+	}
+	if len(bin) > 0 {
+		_, e = p.trans.Write(bin)
+		return NewTProtocolException(e)
+	}
+	return nil
+}
+
+//
+// Reading methods.
+//
+
+// Read a message header.
+func (p *TCompactProtocol) ReadMessageBegin() (name string, typeId TMessageType, seqId int32, err error) {
+
+	protocolId, err := p.readByteDirect()
+	if err != nil {
+		return
+	}
+
+	if protocolId != COMPACT_PROTOCOL_ID {
+		e := fmt.Errorf("Expected protocol id %02x but got %02x", COMPACT_PROTOCOL_ID, protocolId)
+		return "", typeId, seqId, NewTProtocolExceptionWithType(BAD_VERSION, e)
+	}
+
+	versionAndType, err := p.readByteDirect()
+	if err != nil {
+		return
+	}
+
+	version := versionAndType & COMPACT_VERSION_MASK
+	typeId = TMessageType((versionAndType >> COMPACT_TYPE_SHIFT_AMOUNT) & COMPACT_TYPE_BITS)
+	if version != COMPACT_VERSION {
+		e := fmt.Errorf("Expected version %02x but got %02x", COMPACT_VERSION, version)
+		err = NewTProtocolExceptionWithType(BAD_VERSION, e)
+		return
+	}
+	seqId, e := p.readVarint32()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	name, err = p.ReadString()
+	return
+}
+
+func (p *TCompactProtocol) ReadMessageEnd() error { return nil }
+
+// Read a struct begin. There's nothing on the wire for this, but it is our
+// opportunity to push a new struct begin marker onto the field stack.
+func (p *TCompactProtocol) ReadStructBegin() (name string, err error) {
+	p.lastField = append(p.lastField, p.lastFieldId)
+	p.lastFieldId = 0
+	return
+}
+
+// Doesn't actually consume any wire data, just removes the last field for
+// this struct from the field stack.
+func (p *TCompactProtocol) ReadStructEnd() error {
+	// consume the last field we read off the wire.
+	p.lastFieldId = p.lastField[len(p.lastField)-1]
+	p.lastField = p.lastField[:len(p.lastField)-1]
+	return nil
+}
+
+// Read a field header off the wire.
+func (p *TCompactProtocol) ReadFieldBegin() (name string, typeId TType, id int16, err error) {
+	t, err := p.readByteDirect()
+	if err != nil {
+		return
+	}
+
+	// if it's a stop, then we can return immediately, as the struct is over.
+	if (t & 0x0f) == STOP {
+		return "", STOP, 0, nil
+	}
+
+	// mask off the 4 MSB of the type header. it could contain a field id delta.
+	modifier := int16((t & 0xf0) >> 4)
+	if modifier == 0 {
+		// not a delta. look ahead for the zigzag varint field id.
+		id, err = p.ReadI16()
+		if err != nil {
+			return
+		}
+	} else {
+		// has a delta. add the delta to the last read field id.
+		id = int16(p.lastFieldId) + modifier
+	}
+	typeId, e := p.getTType(tCompactType(t & 0x0f))
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+
+	// if this happens to be a boolean field, the value is encoded in the type
+	if p.isBoolType(t) {
+		// save the boolean value in a special instance variable.
+		p.boolValue = (byte(t)&0x0f == COMPACT_BOOLEAN_TRUE)
+		p.boolValueIsNotNull = true
+	}
+
+	// push the new field onto the field stack so we can keep the deltas going.
+	p.lastFieldId = int(id)
+	return
+}
+
+func (p *TCompactProtocol) ReadFieldEnd() error { return nil }
+
+// Read a map header off the wire. If the size is zero, skip reading the key
+// and value type. This means that 0-length maps will yield TMaps without the
+// "correct" types.
+func (p *TCompactProtocol) ReadMapBegin() (keyType TType, valueType TType, size int, err error) {
+	size32, e := p.readVarint32()
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	if size32 < 0 {
+		err = invalidDataLength
+		return
+	}
+	size = int(size32)
+
+	keyAndValueType := byte(STOP)
+	if size != 0 {
+		keyAndValueType, err = p.readByteDirect()
+		if err != nil {
+			return
+		}
+	}
+	keyType, _ = p.getTType(tCompactType(keyAndValueType >> 4))
+	valueType, _ = p.getTType(tCompactType(keyAndValueType & 0xf))
+	return
+}
+
+func (p *TCompactProtocol) ReadMapEnd() error { return nil }
+
+// Read a list header off the wire. If the list size is 0-14, the size will
+// be packed into the element type header. If it's a longer list, the 4 MSB
+// of the element type header will be 0xF, and a varint will follow with the
+// true size.
+func (p *TCompactProtocol) ReadListBegin() (elemType TType, size int, err error) {
+	size_and_type, err := p.readByteDirect()
+	if err != nil {
+		return
+	}
+	size = int((size_and_type >> 4) & 0x0f)
+	if size == 15 {
+		size2, e := p.readVarint32()
+		if e != nil {
+			err = NewTProtocolException(e)
+			return
+		}
+		if size2 < 0 {
+			err = invalidDataLength
+			return
+		}
+		size = int(size2)
+	}
+	elemType, e := p.getTType(tCompactType(size_and_type))
+	if e != nil {
+		err = NewTProtocolException(e)
+		return
+	}
+	return
+}
+
+func (p *TCompactProtocol) ReadListEnd() error { return nil }
+
+// Read a set header off the wire. If the set size is 0-14, the size will
+// be packed into the element type header. If it's a longer set, the 4 MSB
+// of the element type header will be 0xF, and a varint will follow with the
+// true size.
+func (p *TCompactProtocol) ReadSetBegin() (elemType TType, size int, err error) {
+	return p.ReadListBegin()
+}
+
+func (p *TCompactProtocol) ReadSetEnd() error { return nil }
+
+// Read a boolean off the wire. If this is a boolean field, the value should
+// already have been read during readFieldBegin, so we'll just consume the
+// pre-stored value. Otherwise, read a byte.
+func (p *TCompactProtocol) ReadBool() (value bool, err error) {
+	if p.boolValueIsNotNull {
+		p.boolValueIsNotNull = false
+		return p.boolValue, nil
+	}
+	v, err := p.readByteDirect()
+	return v == COMPACT_BOOLEAN_TRUE, err
+}
+
+// Read a single byte off the wire. Nothing interesting here.
+func (p *TCompactProtocol) ReadByte() (int8, error) {
+	v, err := p.readByteDirect()
+	if err != nil {
+		return 0, NewTProtocolException(err)
+	}
+	return int8(v), err
+}
+
+// Read an i16 from the wire as a zigzag varint.
+func (p *TCompactProtocol) ReadI16() (value int16, err error) {
+	v, err := p.ReadI32()
+	return int16(v), err
+}
+
+// Read an i32 from the wire as a zigzag varint.
+func (p *TCompactProtocol) ReadI32() (value int32, err error) {
+	v, e := p.readVarint32()
+	if e != nil {
+		return 0, NewTProtocolException(e)
+	}
+	value = p.zigzagToInt32(v)
+	return value, nil
+}
+
+// Read an i64 from the wire as a zigzag varint.
+func (p *TCompactProtocol) ReadI64() (value int64, err error) {
+	v, e := p.readVarint64()
+	if e != nil {
+		return 0, NewTProtocolException(e)
+	}
+	value = p.zigzagToInt64(v)
+	return value, nil
+}
+
+// No magic here - just read a double off the wire.
+func (p *TCompactProtocol) ReadDouble() (value float64, err error) {
+	longBits := p.buffer[0:8]
+	_, e := io.ReadFull(p.trans, longBits)
+	if e != nil {
+		return 0.0, NewTProtocolException(e)
+	}
+	return math.Float64frombits(p.bytesToUint64(longBits)), nil
+}
+
+// Reads a []byte (via readBinary), and then UTF-8 decodes it.
+func (p *TCompactProtocol) ReadString() (value string, err error) {
+	length, e := p.readVarint32()
+	if e != nil {
+		return "", NewTProtocolException(e)
+	}
+	if length < 0 {
+		return "", invalidDataLength
+	}
+	if uint64(length) > p.trans.RemainingBytes() {
+		return "", invalidDataLength
+	}
+
+	if length == 0 {
+		return "", nil
+	}
+	var buf []byte
+	if length <= int32(len(p.buffer)) {
+		buf = p.buffer[0:length]
+	} else {
+		buf = make([]byte, length)
+	}
+	_, e = io.ReadFull(p.trans, buf)
+	return string(buf), NewTProtocolException(e)
+}
+
+// Read a []byte from the wire.
+func (p *TCompactProtocol) ReadBinary() (value []byte, err error) {
+	length, e := p.readVarint32()
+	if e != nil {
+		return nil, NewTProtocolException(e)
+	}
+	if length == 0 {
+		return []byte{}, nil
+	}
+	if length < 0 {
+		return nil, invalidDataLength
+	}
+	if uint64(length) > p.trans.RemainingBytes() {
+		return nil, invalidDataLength
+	}
+
+	buf := make([]byte, length)
+	_, e = io.ReadFull(p.trans, buf)
+	return buf, NewTProtocolException(e)
+}
+
+func (p *TCompactProtocol) Flush() (err error) {
+	return NewTProtocolException(p.trans.Flush())
+}
+
+func (p *TCompactProtocol) Skip(fieldType TType) (err error) {
+	return SkipDefaultDepth(p, fieldType)
+}
+
+func (p *TCompactProtocol) Transport() TTransport {
+	return p.origTransport
+}
+
+//
+// Internal writing methods
+//
+
+// Abstract method for writing the start of lists and sets. List and sets on
+// the wire differ only by the type indicator.
+func (p *TCompactProtocol) writeCollectionBegin(elemType TType, size int) (int, error) {
+	if size <= 14 {
+		return 1, p.writeByteDirect(byte(int32(size<<4) | int32(p.getCompactType(elemType))))
+	}
+	err := p.writeByteDirect(0xf0 | byte(p.getCompactType(elemType)))
+	if err != nil {
+		return 0, err
+	}
+	m, err := p.writeVarint32(int32(size))
+	return 1 + m, err
+}
+
+// Write an i32 as a varint. Results in 1-5 bytes on the wire.
+// TODO(pomack): make a permanent buffer like writeVarint64?
+func (p *TCompactProtocol) writeVarint32(n int32) (int, error) {
+	i32buf := p.buffer[0:5]
+	idx := 0
+	for {
+		if (n & ^0x7F) == 0 {
+			i32buf[idx] = byte(n)
+			idx++
+			// p.writeByteDirect(byte(n));
+			break
+			// return;
+		} else {
+			i32buf[idx] = byte((n & 0x7F) | 0x80)
+			idx++
+			// p.writeByteDirect(byte(((n & 0x7F) | 0x80)));
+			u := uint32(n)
+			n = int32(u >> 7)
+		}
+	}
+	return p.trans.Write(i32buf[0:idx])
+}
+
+// Write an i64 as a varint. Results in 1-10 bytes on the wire.
+func (p *TCompactProtocol) writeVarint64(n int64) (int, error) {
+	varint64out := p.buffer[0:10]
+	idx := 0
+	for {
+		if (n & ^0x7F) == 0 {
+			varint64out[idx] = byte(n)
+			idx++
+			break
+		} else {
+			varint64out[idx] = byte((n & 0x7F) | 0x80)
+			idx++
+			u := uint64(n)
+			n = int64(u >> 7)
+		}
+	}
+	return p.trans.Write(varint64out[0:idx])
+}
+
+// Convert l into a zigzag long. This allows negative numbers to be
+// represented compactly as a varint.
+func (p *TCompactProtocol) int64ToZigzag(l int64) int64 {
+	return (l << 1) ^ (l >> 63)
+}
+
+// Convert l into a zigzag long. This allows negative numbers to be
+// represented compactly as a varint.
+func (p *TCompactProtocol) int32ToZigzag(n int32) int32 {
+	return (n << 1) ^ (n >> 31)
+}
+
+func (p *TCompactProtocol) fixedUint64ToBytes(n uint64, buf []byte) {
+	binary.LittleEndian.PutUint64(buf, n)
+}
+
+func (p *TCompactProtocol) fixedInt64ToBytes(n int64, buf []byte) {
+	binary.LittleEndian.PutUint64(buf, uint64(n))
+}
+
+// Writes a byte without any possibility of all that field header nonsense.
+// Used internally by other writing methods that know they need to write a byte.
+func (p *TCompactProtocol) writeByteDirect(b byte) error {
+	return p.trans.WriteByte(b)
+}
+
+// Writes a byte without any possibility of all that field header nonsense.
+func (p *TCompactProtocol) writeIntAsByteDirect(n int) (int, error) {
+	return 1, p.writeByteDirect(byte(n))
+}
+
+//
+// Internal reading methods
+//
+
+// Read an i32 from the wire as a varint. The MSB of each byte is set
+// if there is another byte to follow. This can read up to 5 bytes.
+func (p *TCompactProtocol) readVarint32() (int32, error) {
+	// if the wire contains the right stuff, this will just truncate the i64 we
+	// read and get us the right sign.
+	v, err := p.readVarint64()
+	return int32(v), err
+}
+
+// Read an i64 from the wire as a proper varint. The MSB of each byte is set
+// if there is another byte to follow. This can read up to 10 bytes.
+func (p *TCompactProtocol) readVarint64() (int64, error) {
+	shift := uint(0)
+	result := int64(0)
+	for {
+		b, err := p.readByteDirect()
+		if err != nil {
+			return 0, err
+		}
+		result |= int64(b&0x7f) << shift
+		if (b & 0x80) != 0x80 {
+			break
+		}
+		shift += 7
+	}
+	return result, nil
+}
+
+// Read a byte, unlike ReadByte that reads Thrift-byte that is i8.
+func (p *TCompactProtocol) readByteDirect() (byte, error) {
+	return p.trans.ReadByte()
+}
+
+//
+// encoding helpers
+//
+
+// Convert from zigzag int to int.
+func (p *TCompactProtocol) zigzagToInt32(n int32) int32 {
+	u := uint32(n)
+	return int32(u>>1) ^ -(n & 1)
+}
+
+// Convert from zigzag long to long.
+func (p *TCompactProtocol) zigzagToInt64(n int64) int64 {
+	u := uint64(n)
+	return int64(u>>1) ^ -(n & 1)
+}
+
+// Note that it's important that the mask bytes are long literals,
+// otherwise they'll default to ints, and when you shift an int left 56 bits,
+// you just get a messed up int.
+func (p *TCompactProtocol) bytesToInt64(b []byte) int64 {
+	return int64(binary.LittleEndian.Uint64(b))
+}
+
+// Note that it's important that the mask bytes are long literals,
+// otherwise they'll default to ints, and when you shift an int left 56 bits,
+// you just get a messed up int.
+func (p *TCompactProtocol) bytesToUint64(b []byte) uint64 {
+	return binary.LittleEndian.Uint64(b)
+}
+
+//
+// type testing and converting
+//
+
+func (p *TCompactProtocol) isBoolType(b byte) bool {
+	return (b&0x0f) == COMPACT_BOOLEAN_TRUE || (b&0x0f) == COMPACT_BOOLEAN_FALSE
+}
+
+// Given a tCompactType constant, convert it to its corresponding
+// TType value.
+func (p *TCompactProtocol) getTType(t tCompactType) (TType, error) {
+	switch byte(t) & 0x0f {
+	case STOP:
+		return STOP, nil
+	case COMPACT_BOOLEAN_FALSE, COMPACT_BOOLEAN_TRUE:
+		return BOOL, nil
+	case COMPACT_BYTE:
+		return BYTE, nil
+	case COMPACT_I16:
+		return I16, nil
+	case COMPACT_I32:
+		return I32, nil
+	case COMPACT_I64:
+		return I64, nil
+	case COMPACT_DOUBLE:
+		return DOUBLE, nil
+	case COMPACT_BINARY:
+		return STRING, nil
+	case COMPACT_LIST:
+		return LIST, nil
+	case COMPACT_SET:
+		return SET, nil
+	case COMPACT_MAP:
+		return MAP, nil
+	case COMPACT_STRUCT:
+		return STRUCT, nil
+	}
+	return STOP, TException(fmt.Errorf("don't know what type: %s", t&0x0f))
+}
+
+// Given a TType value, find the appropriate TCompactProtocol.Types constant.
+func (p *TCompactProtocol) getCompactType(t TType) tCompactType {
+	return ttypeToCompactType[t]
+}

vendor/github.com/apache/thrift/lib/go/thrift/debug_protocol.go

@@ -0,0 +1,269 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"log"
+)
+
+type TDebugProtocol struct {
+	Delegate  TProtocol
+	LogPrefix string
+}
+
+type TDebugProtocolFactory struct {
+	Underlying TProtocolFactory
+	LogPrefix  string
+}
+
+func NewTDebugProtocolFactory(underlying TProtocolFactory, logPrefix string) *TDebugProtocolFactory {
+	return &TDebugProtocolFactory{
+		Underlying: underlying,
+		LogPrefix:  logPrefix,
+	}
+}
+
+func (t *TDebugProtocolFactory) GetProtocol(trans TTransport) TProtocol {
+	return &TDebugProtocol{
+		Delegate:  t.Underlying.GetProtocol(trans),
+		LogPrefix: t.LogPrefix,
+	}
+}
+
+func (tdp *TDebugProtocol) WriteMessageBegin(name string, typeId TMessageType, seqid int32) error {
+	err := tdp.Delegate.WriteMessageBegin(name, typeId, seqid)
+	log.Printf("%sWriteMessageBegin(name=%#v, typeId=%#v, seqid=%#v) => %#v", tdp.LogPrefix, name, typeId, seqid, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteMessageEnd() error {
+	err := tdp.Delegate.WriteMessageEnd()
+	log.Printf("%sWriteMessageEnd() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteStructBegin(name string) error {
+	err := tdp.Delegate.WriteStructBegin(name)
+	log.Printf("%sWriteStructBegin(name=%#v) => %#v", tdp.LogPrefix, name, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteStructEnd() error {
+	err := tdp.Delegate.WriteStructEnd()
+	log.Printf("%sWriteStructEnd() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteFieldBegin(name string, typeId TType, id int16) error {
+	err := tdp.Delegate.WriteFieldBegin(name, typeId, id)
+	log.Printf("%sWriteFieldBegin(name=%#v, typeId=%#v, id%#v) => %#v", tdp.LogPrefix, name, typeId, id, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteFieldEnd() error {
+	err := tdp.Delegate.WriteFieldEnd()
+	log.Printf("%sWriteFieldEnd() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteFieldStop() error {
+	err := tdp.Delegate.WriteFieldStop()
+	log.Printf("%sWriteFieldStop() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteMapBegin(keyType TType, valueType TType, size int) error {
+	err := tdp.Delegate.WriteMapBegin(keyType, valueType, size)
+	log.Printf("%sWriteMapBegin(keyType=%#v, valueType=%#v, size=%#v) => %#v", tdp.LogPrefix, keyType, valueType, size, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteMapEnd() error {
+	err := tdp.Delegate.WriteMapEnd()
+	log.Printf("%sWriteMapEnd() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteListBegin(elemType TType, size int) error {
+	err := tdp.Delegate.WriteListBegin(elemType, size)
+	log.Printf("%sWriteListBegin(elemType=%#v, size=%#v) => %#v", tdp.LogPrefix, elemType, size, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteListEnd() error {
+	err := tdp.Delegate.WriteListEnd()
+	log.Printf("%sWriteListEnd() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteSetBegin(elemType TType, size int) error {
+	err := tdp.Delegate.WriteSetBegin(elemType, size)
+	log.Printf("%sWriteSetBegin(elemType=%#v, size=%#v) => %#v", tdp.LogPrefix, elemType, size, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteSetEnd() error {
+	err := tdp.Delegate.WriteSetEnd()
+	log.Printf("%sWriteSetEnd() => %#v", tdp.LogPrefix, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteBool(value bool) error {
+	err := tdp.Delegate.WriteBool(value)
+	log.Printf("%sWriteBool(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteByte(value int8) error {
+	err := tdp.Delegate.WriteByte(value)
+	log.Printf("%sWriteByte(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteI16(value int16) error {
+	err := tdp.Delegate.WriteI16(value)
+	log.Printf("%sWriteI16(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteI32(value int32) error {
+	err := tdp.Delegate.WriteI32(value)
+	log.Printf("%sWriteI32(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteI64(value int64) error {
+	err := tdp.Delegate.WriteI64(value)
+	log.Printf("%sWriteI64(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteDouble(value float64) error {
+	err := tdp.Delegate.WriteDouble(value)
+	log.Printf("%sWriteDouble(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteString(value string) error {
+	err := tdp.Delegate.WriteString(value)
+	log.Printf("%sWriteString(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+func (tdp *TDebugProtocol) WriteBinary(value []byte) error {
+	err := tdp.Delegate.WriteBinary(value)
+	log.Printf("%sWriteBinary(value=%#v) => %#v", tdp.LogPrefix, value, err)
+	return err
+}
+
+func (tdp *TDebugProtocol) ReadMessageBegin() (name string, typeId TMessageType, seqid int32, err error) {
+	name, typeId, seqid, err = tdp.Delegate.ReadMessageBegin()
+	log.Printf("%sReadMessageBegin() (name=%#v, typeId=%#v, seqid=%#v, err=%#v)", tdp.LogPrefix, name, typeId, seqid, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadMessageEnd() (err error) {
+	err = tdp.Delegate.ReadMessageEnd()
+	log.Printf("%sReadMessageEnd() err=%#v", tdp.LogPrefix, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadStructBegin() (name string, err error) {
+	name, err = tdp.Delegate.ReadStructBegin()
+	log.Printf("%sReadStructBegin() (name%#v, err=%#v)", tdp.LogPrefix, name, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadStructEnd() (err error) {
+	err = tdp.Delegate.ReadStructEnd()
+	log.Printf("%sReadStructEnd() err=%#v", tdp.LogPrefix, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadFieldBegin() (name string, typeId TType, id int16, err error) {
+	name, typeId, id, err = tdp.Delegate.ReadFieldBegin()
+	log.Printf("%sReadFieldBegin() (name=%#v, typeId=%#v, id=%#v, err=%#v)", tdp.LogPrefix, name, typeId, id, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadFieldEnd() (err error) {
+	err = tdp.Delegate.ReadFieldEnd()
+	log.Printf("%sReadFieldEnd() err=%#v", tdp.LogPrefix, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadMapBegin() (keyType TType, valueType TType, size int, err error) {
+	keyType, valueType, size, err = tdp.Delegate.ReadMapBegin()
+	log.Printf("%sReadMapBegin() (keyType=%#v, valueType=%#v, size=%#v, err=%#v)", tdp.LogPrefix, keyType, valueType, size, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadMapEnd() (err error) {
+	err = tdp.Delegate.ReadMapEnd()
+	log.Printf("%sReadMapEnd() err=%#v", tdp.LogPrefix, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadListBegin() (elemType TType, size int, err error) {
+	elemType, size, err = tdp.Delegate.ReadListBegin()
+	log.Printf("%sReadListBegin() (elemType=%#v, size=%#v, err=%#v)", tdp.LogPrefix, elemType, size, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadListEnd() (err error) {
+	err = tdp.Delegate.ReadListEnd()
+	log.Printf("%sReadListEnd() err=%#v", tdp.LogPrefix, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadSetBegin() (elemType TType, size int, err error) {
+	elemType, size, err = tdp.Delegate.ReadSetBegin()
+	log.Printf("%sReadSetBegin() (elemType=%#v, size=%#v, err=%#v)", tdp.LogPrefix, elemType, size, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadSetEnd() (err error) {
+	err = tdp.Delegate.ReadSetEnd()
+	log.Printf("%sReadSetEnd() err=%#v", tdp.LogPrefix, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadBool() (value bool, err error) {
+	value, err = tdp.Delegate.ReadBool()
+	log.Printf("%sReadBool() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadByte() (value int8, err error) {
+	value, err = tdp.Delegate.ReadByte()
+	log.Printf("%sReadByte() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadI16() (value int16, err error) {
+	value, err = tdp.Delegate.ReadI16()
+	log.Printf("%sReadI16() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadI32() (value int32, err error) {
+	value, err = tdp.Delegate.ReadI32()
+	log.Printf("%sReadI32() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadI64() (value int64, err error) {
+	value, err = tdp.Delegate.ReadI64()
+	log.Printf("%sReadI64() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadDouble() (value float64, err error) {
+	value, err = tdp.Delegate.ReadDouble()
+	log.Printf("%sReadDouble() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadString() (value string, err error) {
+	value, err = tdp.Delegate.ReadString()
+	log.Printf("%sReadString() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) ReadBinary() (value []byte, err error) {
+	value, err = tdp.Delegate.ReadBinary()
+	log.Printf("%sReadBinary() (value=%#v, err=%#v)", tdp.LogPrefix, value, err)
+	return
+}
+func (tdp *TDebugProtocol) Skip(fieldType TType) (err error) {
+	err = tdp.Delegate.Skip(fieldType)
+	log.Printf("%sSkip(fieldType=%#v) (err=%#v)", tdp.LogPrefix, fieldType, err)
+	return
+}
+func (tdp *TDebugProtocol) Flush() (err error) {
+	err = tdp.Delegate.Flush()
+	log.Printf("%sFlush() (err=%#v)", tdp.LogPrefix, err)
+	return
+}
+
+func (tdp *TDebugProtocol) Transport() TTransport {
+	return tdp.Delegate.Transport()
+}

vendor/github.com/apache/thrift/lib/go/thrift/deserializer.go

@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+type TDeserializer struct {
+	Transport TTransport
+	Protocol  TProtocol
+}
+
+func NewTDeserializer() *TDeserializer {
+	var transport TTransport
+	transport = NewTMemoryBufferLen(1024)
+
+	protocol := NewTBinaryProtocolFactoryDefault().GetProtocol(transport)
+
+	return &TDeserializer{
+		transport,
+		protocol}
+}
+
+func (t *TDeserializer) ReadString(msg TStruct, s string) (err error) {
+	err = nil
+	if _, err = t.Transport.Write([]byte(s)); err != nil {
+		return
+	}
+	if err = msg.Read(t.Protocol); err != nil {
+		return
+	}
+	return
+}
+
+func (t *TDeserializer) Read(msg TStruct, b []byte) (err error) {
+	err = nil
+	if _, err = t.Transport.Write(b); err != nil {
+		return
+	}
+	if err = msg.Read(t.Protocol); err != nil {
+		return
+	}
+	return
+}

vendor/github.com/apache/thrift/lib/go/thrift/exception.go

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"errors"
+)
+
+// Generic Thrift exception
+type TException interface {
+	error
+}
+
+// Prepends additional information to an error without losing the Thrift exception interface
+func PrependError(prepend string, err error) error {
+	if t, ok := err.(TTransportException); ok {
+		return NewTTransportException(t.TypeId(), prepend+t.Error())
+	}
+	if t, ok := err.(TProtocolException); ok {
+		return NewTProtocolExceptionWithType(t.TypeId(), errors.New(prepend+err.Error()))
+	}
+	if t, ok := err.(TApplicationException); ok {
+		return NewTApplicationException(t.TypeId(), prepend+t.Error())
+	}
+
+	return errors.New(prepend + err.Error())
+}

vendor/github.com/apache/thrift/lib/go/thrift/field.go

@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// Helper class that encapsulates field metadata.
+type field struct {
+	name   string
+	typeId TType
+	id     int
+}
+
+func newField(n string, t TType, i int) *field {
+	return &field{name: n, typeId: t, id: i}
+}
+
+func (p *field) Name() string {
+	if p == nil {
+		return ""
+	}
+	return p.name
+}
+
+func (p *field) TypeId() TType {
+	if p == nil {
+		return TType(VOID)
+	}
+	return p.typeId
+}
+
+func (p *field) Id() int {
+	if p == nil {
+		return -1
+	}
+	return p.id
+}
+
+func (p *field) String() string {
+	if p == nil {
+		return "<nil>"
+	}
+	return "<TField name:'" + p.name + "' type:" + string(p.typeId) + " field-id:" + string(p.id) + ">"
+}
+
+var ANONYMOUS_FIELD *field
+
+type fieldSlice []field
+
+func (p fieldSlice) Len() int {
+	return len(p)
+}
+
+func (p fieldSlice) Less(i, j int) bool {
+	return p[i].Id() < p[j].Id()
+}
+
+func (p fieldSlice) Swap(i, j int) {
+	p[i], p[j] = p[j], p[i]
+}
+
+func init() {
+	ANONYMOUS_FIELD = newField("", STOP, 0)
+}

vendor/github.com/apache/thrift/lib/go/thrift/framed_transport.go

@@ -0,0 +1,167 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"io"
+)
+
+const DEFAULT_MAX_LENGTH = 16384000
+
+type TFramedTransport struct {
+	transport TTransport
+	buf       bytes.Buffer
+	reader    *bufio.Reader
+	frameSize uint32 //Current remaining size of the frame. if ==0 read next frame header
+	buffer    [4]byte
+	maxLength uint32
+}
+
+type tFramedTransportFactory struct {
+	factory   TTransportFactory
+	maxLength uint32
+}
+
+func NewTFramedTransportFactory(factory TTransportFactory) TTransportFactory {
+	return &tFramedTransportFactory{factory: factory, maxLength: DEFAULT_MAX_LENGTH}
+}
+
+func NewTFramedTransportFactoryMaxLength(factory TTransportFactory, maxLength uint32) TTransportFactory {
+        return &tFramedTransportFactory{factory: factory, maxLength: maxLength}
+}
+
+func (p *tFramedTransportFactory) GetTransport(base TTransport) TTransport {
+	return NewTFramedTransportMaxLength(p.factory.GetTransport(base), p.maxLength)
+}
+
+func NewTFramedTransport(transport TTransport) *TFramedTransport {
+	return &TFramedTransport{transport: transport, reader: bufio.NewReader(transport), maxLength: DEFAULT_MAX_LENGTH}
+}
+
+func NewTFramedTransportMaxLength(transport TTransport, maxLength uint32) *TFramedTransport {
+	return &TFramedTransport{transport: transport, reader: bufio.NewReader(transport), maxLength: maxLength}
+}
+
+func (p *TFramedTransport) Open() error {
+	return p.transport.Open()
+}
+
+func (p *TFramedTransport) IsOpen() bool {
+	return p.transport.IsOpen()
+}
+
+func (p *TFramedTransport) Close() error {
+	return p.transport.Close()
+}
+
+func (p *TFramedTransport) Read(buf []byte) (l int, err error) {
+	if p.frameSize == 0 {
+		p.frameSize, err = p.readFrameHeader()
+		if err != nil {
+			return
+		}
+	}
+	if p.frameSize < uint32(len(buf)) {
+		frameSize := p.frameSize
+		tmp := make([]byte, p.frameSize)
+		l, err = p.Read(tmp)
+		copy(buf, tmp)
+		if err == nil {
+			err = NewTTransportExceptionFromError(fmt.Errorf("Not enough frame size %d to read %d bytes", frameSize, len(buf)))
+			return
+		}
+	}
+	got, err := p.reader.Read(buf)
+	p.frameSize = p.frameSize - uint32(got)
+	//sanity check
+	if p.frameSize < 0 {
+		return 0, NewTTransportException(UNKNOWN_TRANSPORT_EXCEPTION, "Negative frame size")
+	}
+	return got, NewTTransportExceptionFromError(err)
+}
+
+func (p *TFramedTransport) ReadByte() (c byte, err error) {
+	if p.frameSize == 0 {
+		p.frameSize, err = p.readFrameHeader()
+		if err != nil {
+			return
+		}
+	}
+	if p.frameSize < 1 {
+		return 0, NewTTransportExceptionFromError(fmt.Errorf("Not enough frame size %d to read %d bytes", p.frameSize, 1))
+	}
+	c, err = p.reader.ReadByte()
+	if err == nil {
+		p.frameSize--
+	}
+	return
+}
+
+func (p *TFramedTransport) Write(buf []byte) (int, error) {
+	n, err := p.buf.Write(buf)
+	return n, NewTTransportExceptionFromError(err)
+}
+
+func (p *TFramedTransport) WriteByte(c byte) error {
+	return p.buf.WriteByte(c)
+}
+
+func (p *TFramedTransport) WriteString(s string) (n int, err error) {
+	return p.buf.WriteString(s)
+}
+
+func (p *TFramedTransport) Flush() error {
+	size := p.buf.Len()
+	buf := p.buffer[:4]
+	binary.BigEndian.PutUint32(buf, uint32(size))
+	_, err := p.transport.Write(buf)
+	if err != nil {
+		return NewTTransportExceptionFromError(err)
+	}
+	if size > 0 {
+		if n, err := p.buf.WriteTo(p.transport); err != nil {
+			print("Error while flushing write buffer of size ", size, " to transport, only wrote ", n, " bytes: ", err.Error(), "\n")
+			return NewTTransportExceptionFromError(err)
+		}
+	}
+	err = p.transport.Flush()
+	return NewTTransportExceptionFromError(err)
+}
+
+func (p *TFramedTransport) readFrameHeader() (uint32, error) {
+	buf := p.buffer[:4]
+	if _, err := io.ReadFull(p.reader, buf); err != nil {
+		return 0, err
+	}
+	size := binary.BigEndian.Uint32(buf)
+	if size < 0 || size > p.maxLength {
+		return 0, NewTTransportException(UNKNOWN_TRANSPORT_EXCEPTION, fmt.Sprintf("Incorrect frame size (%d)", size))
+	}
+	return size, nil
+}
+
+func (p *TFramedTransport) RemainingBytes() (num_bytes uint64) {
+	return uint64(p.frameSize)
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/http_client.go

@@ -0,0 +1,258 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bytes"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"strconv"
+)
+
+// Default to using the shared http client. Library users are
+// free to change this global client or specify one through
+// THttpClientOptions.
+var DefaultHttpClient *http.Client = http.DefaultClient
+
+type THttpClient struct {
+	client             *http.Client
+	response           *http.Response
+	url                *url.URL
+	requestBuffer      *bytes.Buffer
+	header             http.Header
+	nsecConnectTimeout int64
+	nsecReadTimeout    int64
+}
+
+type THttpClientTransportFactory struct {
+	options THttpClientOptions
+	url     string
+	isPost  bool
+}
+
+func (p *THttpClientTransportFactory) GetTransport(trans TTransport) TTransport {
+	if trans != nil {
+		t, ok := trans.(*THttpClient)
+		if ok && t.url != nil {
+			if t.requestBuffer != nil {
+				t2, _ := NewTHttpPostClientWithOptions(t.url.String(), p.options)
+				return t2
+			}
+			t2, _ := NewTHttpClientWithOptions(t.url.String(), p.options)
+			return t2
+		}
+	}
+	if p.isPost {
+		s, _ := NewTHttpPostClientWithOptions(p.url, p.options)
+		return s
+	}
+	s, _ := NewTHttpClientWithOptions(p.url, p.options)
+	return s
+}
+
+type THttpClientOptions struct {
+	// If nil, DefaultHttpClient is used
+	Client *http.Client
+}
+
+func NewTHttpClientTransportFactory(url string) *THttpClientTransportFactory {
+	return NewTHttpClientTransportFactoryWithOptions(url, THttpClientOptions{})
+}
+
+func NewTHttpClientTransportFactoryWithOptions(url string, options THttpClientOptions) *THttpClientTransportFactory {
+	return &THttpClientTransportFactory{url: url, isPost: false, options: options}
+}
+
+func NewTHttpPostClientTransportFactory(url string) *THttpClientTransportFactory {
+	return NewTHttpPostClientTransportFactoryWithOptions(url, THttpClientOptions{})
+}
+
+func NewTHttpPostClientTransportFactoryWithOptions(url string, options THttpClientOptions) *THttpClientTransportFactory {
+	return &THttpClientTransportFactory{url: url, isPost: true, options: options}
+}
+
+func NewTHttpClientWithOptions(urlstr string, options THttpClientOptions) (TTransport, error) {
+	parsedURL, err := url.Parse(urlstr)
+	if err != nil {
+		return nil, err
+	}
+	response, err := http.Get(urlstr)
+	if err != nil {
+		return nil, err
+	}
+	client := options.Client
+	if client == nil {
+		client = DefaultHttpClient
+	}
+	httpHeader := map[string][]string{"Content-Type": []string{"application/x-thrift"}}
+	return &THttpClient{client: client, response: response, url: parsedURL, header: httpHeader}, nil
+}
+
+func NewTHttpClient(urlstr string) (TTransport, error) {
+	return NewTHttpClientWithOptions(urlstr, THttpClientOptions{})
+}
+
+func NewTHttpPostClientWithOptions(urlstr string, options THttpClientOptions) (TTransport, error) {
+	parsedURL, err := url.Parse(urlstr)
+	if err != nil {
+		return nil, err
+	}
+	buf := make([]byte, 0, 1024)
+	client := options.Client
+	if client == nil {
+		client = DefaultHttpClient
+	}
+	httpHeader := map[string][]string{"Content-Type": []string{"application/x-thrift"}}
+	return &THttpClient{client: client, url: parsedURL, requestBuffer: bytes.NewBuffer(buf), header: httpHeader}, nil
+}
+
+func NewTHttpPostClient(urlstr string) (TTransport, error) {
+	return NewTHttpPostClientWithOptions(urlstr, THttpClientOptions{})
+}
+
+// Set the HTTP Header for this specific Thrift Transport
+// It is important that you first assert the TTransport as a THttpClient type
+// like so:
+//
+// httpTrans := trans.(THttpClient)
+// httpTrans.SetHeader("User-Agent","Thrift Client 1.0")
+func (p *THttpClient) SetHeader(key string, value string) {
+	p.header.Add(key, value)
+}
+
+// Get the HTTP Header represented by the supplied Header Key for this specific Thrift Transport
+// It is important that you first assert the TTransport as a THttpClient type
+// like so:
+//
+// httpTrans := trans.(THttpClient)
+// hdrValue := httpTrans.GetHeader("User-Agent")
+func (p *THttpClient) GetHeader(key string) string {
+	return p.header.Get(key)
+}
+
+// Deletes the HTTP Header given a Header Key for this specific Thrift Transport
+// It is important that you first assert the TTransport as a THttpClient type
+// like so:
+//
+// httpTrans := trans.(THttpClient)
+// httpTrans.DelHeader("User-Agent")
+func (p *THttpClient) DelHeader(key string) {
+	p.header.Del(key)
+}
+
+func (p *THttpClient) Open() error {
+	// do nothing
+	return nil
+}
+
+func (p *THttpClient) IsOpen() bool {
+	return p.response != nil || p.requestBuffer != nil
+}
+
+func (p *THttpClient) closeResponse() error {
+	var err error
+	if p.response != nil && p.response.Body != nil {
+		// The docs specify that if keepalive is enabled and the response body is not
+		// read to completion the connection will never be returned to the pool and
+		// reused. Errors are being ignored here because if the connection is invalid
+		// and this fails for some reason, the Close() method will do any remaining
+		// cleanup.
+		io.Copy(ioutil.Discard, p.response.Body)
+
+		err = p.response.Body.Close()
+	}
+
+	p.response = nil
+	return err
+}
+
+func (p *THttpClient) Close() error {
+	if p.requestBuffer != nil {
+		p.requestBuffer.Reset()
+		p.requestBuffer = nil
+	}
+	return p.closeResponse()
+}
+
+func (p *THttpClient) Read(buf []byte) (int, error) {
+	if p.response == nil {
+		return 0, NewTTransportException(NOT_OPEN, "Response buffer is empty, no request.")
+	}
+	n, err := p.response.Body.Read(buf)
+	if n > 0 && (err == nil || err == io.EOF) {
+		return n, nil
+	}
+	return n, NewTTransportExceptionFromError(err)
+}
+
+func (p *THttpClient) ReadByte() (c byte, err error) {
+	return readByte(p.response.Body)
+}
+
+func (p *THttpClient) Write(buf []byte) (int, error) {
+	n, err := p.requestBuffer.Write(buf)
+	return n, err
+}
+
+func (p *THttpClient) WriteByte(c byte) error {
+	return p.requestBuffer.WriteByte(c)
+}
+
+func (p *THttpClient) WriteString(s string) (n int, err error) {
+	return p.requestBuffer.WriteString(s)
+}
+
+func (p *THttpClient) Flush() error {
+	// Close any previous response body to avoid leaking connections.
+	p.closeResponse()
+
+	req, err := http.NewRequest("POST", p.url.String(), p.requestBuffer)
+	if err != nil {
+		return NewTTransportExceptionFromError(err)
+	}
+	req.Header = p.header
+	response, err := p.client.Do(req)
+	if err != nil {
+		return NewTTransportExceptionFromError(err)
+	}
+	if response.StatusCode != http.StatusOK {
+		// Close the response to avoid leaking file descriptors. closeResponse does
+		// more than just call Close(), so temporarily assign it and reuse the logic.
+		p.response = response
+		p.closeResponse()
+
+		// TODO(pomack) log bad response
+		return NewTTransportException(UNKNOWN_TRANSPORT_EXCEPTION, "HTTP Response code: "+strconv.Itoa(response.StatusCode))
+	}
+	p.response = response
+	return nil
+}
+
+func (p *THttpClient) RemainingBytes() (num_bytes uint64) {
+	len := p.response.ContentLength
+	if len >= 0 {
+		return uint64(len)
+	}
+
+	const maxSize = ^uint64(0)
+	return maxSize // the thruth is, we just don't know unless framed is used
+}

vendor/github.com/apache/thrift/lib/go/thrift/http_transport.go

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import "net/http"
+
+// NewThriftHandlerFunc is a function that create a ready to use Apache Thrift Handler function
+func NewThriftHandlerFunc(processor TProcessor,
+	inPfactory, outPfactory TProtocolFactory) func(w http.ResponseWriter, r *http.Request) {
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Add("Content-Type", "application/x-thrift")
+
+		transport := NewStreamTransport(r.Body, w)
+		processor.Process(inPfactory.GetProtocol(transport), outPfactory.GetProtocol(transport))
+	}
+}

vendor/github.com/apache/thrift/lib/go/thrift/iostream_transport.go

@@ -0,0 +1,214 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bufio"
+	"io"
+)
+
+// StreamTransport is a Transport made of an io.Reader and/or an io.Writer
+type StreamTransport struct {
+	io.Reader
+	io.Writer
+	isReadWriter bool
+	closed       bool
+}
+
+type StreamTransportFactory struct {
+	Reader       io.Reader
+	Writer       io.Writer
+	isReadWriter bool
+}
+
+func (p *StreamTransportFactory) GetTransport(trans TTransport) TTransport {
+	if trans != nil {
+		t, ok := trans.(*StreamTransport)
+		if ok {
+			if t.isReadWriter {
+				return NewStreamTransportRW(t.Reader.(io.ReadWriter))
+			}
+			if t.Reader != nil && t.Writer != nil {
+				return NewStreamTransport(t.Reader, t.Writer)
+			}
+			if t.Reader != nil && t.Writer == nil {
+				return NewStreamTransportR(t.Reader)
+			}
+			if t.Reader == nil && t.Writer != nil {
+				return NewStreamTransportW(t.Writer)
+			}
+			return &StreamTransport{}
+		}
+	}
+	if p.isReadWriter {
+		return NewStreamTransportRW(p.Reader.(io.ReadWriter))
+	}
+	if p.Reader != nil && p.Writer != nil {
+		return NewStreamTransport(p.Reader, p.Writer)
+	}
+	if p.Reader != nil && p.Writer == nil {
+		return NewStreamTransportR(p.Reader)
+	}
+	if p.Reader == nil && p.Writer != nil {
+		return NewStreamTransportW(p.Writer)
+	}
+	return &StreamTransport{}
+}
+
+func NewStreamTransportFactory(reader io.Reader, writer io.Writer, isReadWriter bool) *StreamTransportFactory {
+	return &StreamTransportFactory{Reader: reader, Writer: writer, isReadWriter: isReadWriter}
+}
+
+func NewStreamTransport(r io.Reader, w io.Writer) *StreamTransport {
+	return &StreamTransport{Reader: bufio.NewReader(r), Writer: bufio.NewWriter(w)}
+}
+
+func NewStreamTransportR(r io.Reader) *StreamTransport {
+	return &StreamTransport{Reader: bufio.NewReader(r)}
+}
+
+func NewStreamTransportW(w io.Writer) *StreamTransport {
+	return &StreamTransport{Writer: bufio.NewWriter(w)}
+}
+
+func NewStreamTransportRW(rw io.ReadWriter) *StreamTransport {
+	bufrw := bufio.NewReadWriter(bufio.NewReader(rw), bufio.NewWriter(rw))
+	return &StreamTransport{Reader: bufrw, Writer: bufrw, isReadWriter: true}
+}
+
+func (p *StreamTransport) IsOpen() bool {
+	return !p.closed
+}
+
+// implicitly opened on creation, can't be reopened once closed
+func (p *StreamTransport) Open() error {
+	if !p.closed {
+		return NewTTransportException(ALREADY_OPEN, "StreamTransport already open.")
+	} else {
+		return NewTTransportException(NOT_OPEN, "cannot reopen StreamTransport.")
+	}
+}
+
+// Closes both the input and output streams.
+func (p *StreamTransport) Close() error {
+	if p.closed {
+		return NewTTransportException(NOT_OPEN, "StreamTransport already closed.")
+	}
+	p.closed = true
+	closedReader := false
+	if p.Reader != nil {
+		c, ok := p.Reader.(io.Closer)
+		if ok {
+			e := c.Close()
+			closedReader = true
+			if e != nil {
+				return e
+			}
+		}
+		p.Reader = nil
+	}
+	if p.Writer != nil && (!closedReader || !p.isReadWriter) {
+		c, ok := p.Writer.(io.Closer)
+		if ok {
+			e := c.Close()
+			if e != nil {
+				return e
+			}
+		}
+		p.Writer = nil
+	}
+	return nil
+}
+
+// Flushes the underlying output stream if not null.
+func (p *StreamTransport) Flush() error {
+	if p.Writer == nil {
+		return NewTTransportException(NOT_OPEN, "Cannot flush null outputStream")
+	}
+	f, ok := p.Writer.(Flusher)
+	if ok {
+		err := f.Flush()
+		if err != nil {
+			return NewTTransportExceptionFromError(err)
+		}
+	}
+	return nil
+}
+
+func (p *StreamTransport) Read(c []byte) (n int, err error) {
+	n, err = p.Reader.Read(c)
+	if err != nil {
+		err = NewTTransportExceptionFromError(err)
+	}
+	return
+}
+
+func (p *StreamTransport) ReadByte() (c byte, err error) {
+	f, ok := p.Reader.(io.ByteReader)
+	if ok {
+		c, err = f.ReadByte()
+	} else {
+		c, err = readByte(p.Reader)
+	}
+	if err != nil {
+		err = NewTTransportExceptionFromError(err)
+	}
+	return
+}
+
+func (p *StreamTransport) Write(c []byte) (n int, err error) {
+	n, err = p.Writer.Write(c)
+	if err != nil {
+		err = NewTTransportExceptionFromError(err)
+	}
+	return
+}
+
+func (p *StreamTransport) WriteByte(c byte) (err error) {
+	f, ok := p.Writer.(io.ByteWriter)
+	if ok {
+		err = f.WriteByte(c)
+	} else {
+		err = writeByte(p.Writer, c)
+	}
+	if err != nil {
+		err = NewTTransportExceptionFromError(err)
+	}
+	return
+}
+
+func (p *StreamTransport) WriteString(s string) (n int, err error) {
+	f, ok := p.Writer.(stringWriter)
+	if ok {
+		n, err = f.WriteString(s)
+	} else {
+		n, err = p.Writer.Write([]byte(s))
+	}
+	if err != nil {
+		err = NewTTransportExceptionFromError(err)
+	}
+	return
+}
+
+func (p *StreamTransport) RemainingBytes() (num_bytes uint64) {
+	const maxSize = ^uint64(0)
+	return maxSize  // the thruth is, we just don't know unless framed is used
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/json_protocol.go

@@ -0,0 +1,583 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"encoding/base64"
+	"fmt"
+)
+
+const (
+	THRIFT_JSON_PROTOCOL_VERSION = 1
+)
+
+// for references to _ParseContext see tsimplejson_protocol.go
+
+// JSON protocol implementation for thrift.
+//
+// This protocol produces/consumes a simple output format
+// suitable for parsing by scripting languages.  It should not be
+// confused with the full-featured TJSONProtocol.
+//
+type TJSONProtocol struct {
+	*TSimpleJSONProtocol
+}
+
+// Constructor
+func NewTJSONProtocol(t TTransport) *TJSONProtocol {
+	v := &TJSONProtocol{TSimpleJSONProtocol: NewTSimpleJSONProtocol(t)}
+	v.parseContextStack = append(v.parseContextStack, int(_CONTEXT_IN_TOPLEVEL))
+	v.dumpContext = append(v.dumpContext, int(_CONTEXT_IN_TOPLEVEL))
+	return v
+}
+
+// Factory
+type TJSONProtocolFactory struct{}
+
+func (p *TJSONProtocolFactory) GetProtocol(trans TTransport) TProtocol {
+	return NewTJSONProtocol(trans)
+}
+
+func NewTJSONProtocolFactory() *TJSONProtocolFactory {
+	return &TJSONProtocolFactory{}
+}
+
+func (p *TJSONProtocol) WriteMessageBegin(name string, typeId TMessageType, seqId int32) error {
+	p.resetContextStack() // THRIFT-3735
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	if e := p.WriteI32(THRIFT_JSON_PROTOCOL_VERSION); e != nil {
+		return e
+	}
+	if e := p.WriteString(name); e != nil {
+		return e
+	}
+	if e := p.WriteByte(int8(typeId)); e != nil {
+		return e
+	}
+	if e := p.WriteI32(seqId); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TJSONProtocol) WriteMessageEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TJSONProtocol) WriteStructBegin(name string) error {
+	if e := p.OutputObjectBegin(); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TJSONProtocol) WriteStructEnd() error {
+	return p.OutputObjectEnd()
+}
+
+func (p *TJSONProtocol) WriteFieldBegin(name string, typeId TType, id int16) error {
+	if e := p.WriteI16(id); e != nil {
+		return e
+	}
+	if e := p.OutputObjectBegin(); e != nil {
+		return e
+	}
+	s, e1 := p.TypeIdToString(typeId)
+	if e1 != nil {
+		return e1
+	}
+	if e := p.WriteString(s); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TJSONProtocol) WriteFieldEnd() error {
+	return p.OutputObjectEnd()
+}
+
+func (p *TJSONProtocol) WriteFieldStop() error { return nil }
+
+func (p *TJSONProtocol) WriteMapBegin(keyType TType, valueType TType, size int) error {
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	s, e1 := p.TypeIdToString(keyType)
+	if e1 != nil {
+		return e1
+	}
+	if e := p.WriteString(s); e != nil {
+		return e
+	}
+	s, e1 = p.TypeIdToString(valueType)
+	if e1 != nil {
+		return e1
+	}
+	if e := p.WriteString(s); e != nil {
+		return e
+	}
+	if e := p.WriteI64(int64(size)); e != nil {
+		return e
+	}
+	return p.OutputObjectBegin()
+}
+
+func (p *TJSONProtocol) WriteMapEnd() error {
+	if e := p.OutputObjectEnd(); e != nil {
+		return e
+	}
+	return p.OutputListEnd()
+}
+
+func (p *TJSONProtocol) WriteListBegin(elemType TType, size int) error {
+	return p.OutputElemListBegin(elemType, size)
+}
+
+func (p *TJSONProtocol) WriteListEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TJSONProtocol) WriteSetBegin(elemType TType, size int) error {
+	return p.OutputElemListBegin(elemType, size)
+}
+
+func (p *TJSONProtocol) WriteSetEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TJSONProtocol) WriteBool(b bool) error {
+	if b {
+		return p.WriteI32(1)
+	}
+	return p.WriteI32(0)
+}
+
+func (p *TJSONProtocol) WriteByte(b int8) error {
+	return p.WriteI32(int32(b))
+}
+
+func (p *TJSONProtocol) WriteI16(v int16) error {
+	return p.WriteI32(int32(v))
+}
+
+func (p *TJSONProtocol) WriteI32(v int32) error {
+	return p.OutputI64(int64(v))
+}
+
+func (p *TJSONProtocol) WriteI64(v int64) error {
+	return p.OutputI64(int64(v))
+}
+
+func (p *TJSONProtocol) WriteDouble(v float64) error {
+	return p.OutputF64(v)
+}
+
+func (p *TJSONProtocol) WriteString(v string) error {
+	return p.OutputString(v)
+}
+
+func (p *TJSONProtocol) WriteBinary(v []byte) error {
+	// JSON library only takes in a string,
+	// not an arbitrary byte array, to ensure bytes are transmitted
+	// efficiently we must convert this into a valid JSON string
+	// therefore we use base64 encoding to avoid excessive escaping/quoting
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	if _, e := p.write(JSON_QUOTE_BYTES); e != nil {
+		return NewTProtocolException(e)
+	}
+	writer := base64.NewEncoder(base64.StdEncoding, p.writer)
+	if _, e := writer.Write(v); e != nil {
+		p.writer.Reset(p.trans) // THRIFT-3735
+		return NewTProtocolException(e)
+	}
+	if e := writer.Close(); e != nil {
+		return NewTProtocolException(e)
+	}
+	if _, e := p.write(JSON_QUOTE_BYTES); e != nil {
+		return NewTProtocolException(e)
+	}
+	return p.OutputPostValue()
+}
+
+// Reading methods.
+func (p *TJSONProtocol) ReadMessageBegin() (name string, typeId TMessageType, seqId int32, err error) {
+	p.resetContextStack() // THRIFT-3735
+	if isNull, err := p.ParseListBegin(); isNull || err != nil {
+		return name, typeId, seqId, err
+	}
+	version, err := p.ReadI32()
+	if err != nil {
+		return name, typeId, seqId, err
+	}
+	if version != THRIFT_JSON_PROTOCOL_VERSION {
+		e := fmt.Errorf("Unknown Protocol version %d, expected version %d", version, THRIFT_JSON_PROTOCOL_VERSION)
+		return name, typeId, seqId, NewTProtocolExceptionWithType(INVALID_DATA, e)
+
+	}
+	if name, err = p.ReadString(); err != nil {
+		return name, typeId, seqId, err
+	}
+	bTypeId, err := p.ReadByte()
+	typeId = TMessageType(bTypeId)
+	if err != nil {
+		return name, typeId, seqId, err
+	}
+	if seqId, err = p.ReadI32(); err != nil {
+		return name, typeId, seqId, err
+	}
+	return name, typeId, seqId, nil
+}
+
+func (p *TJSONProtocol) ReadMessageEnd() error {
+	err := p.ParseListEnd()
+	return err
+}
+
+func (p *TJSONProtocol) ReadStructBegin() (name string, err error) {
+	_, err = p.ParseObjectStart()
+	return "", err
+}
+
+func (p *TJSONProtocol) ReadStructEnd() error {
+	return p.ParseObjectEnd()
+}
+
+func (p *TJSONProtocol) ReadFieldBegin() (string, TType, int16, error) {
+	b, _ := p.reader.Peek(1)
+	if len(b) < 1 || b[0] == JSON_RBRACE[0] || b[0] == JSON_RBRACKET[0] {
+		return "", STOP, -1, nil
+	}
+	fieldId, err := p.ReadI16()
+	if err != nil {
+		return "", STOP, fieldId, err
+	}
+	if _, err = p.ParseObjectStart(); err != nil {
+		return "", STOP, fieldId, err
+	}
+	sType, err := p.ReadString()
+	if err != nil {
+		return "", STOP, fieldId, err
+	}
+	fType, err := p.StringToTypeId(sType)
+	return "", fType, fieldId, err
+}
+
+func (p *TJSONProtocol) ReadFieldEnd() error {
+	return p.ParseObjectEnd()
+}
+
+func (p *TJSONProtocol) ReadMapBegin() (keyType TType, valueType TType, size int, e error) {
+	if isNull, e := p.ParseListBegin(); isNull || e != nil {
+		return VOID, VOID, 0, e
+	}
+
+	// read keyType
+	sKeyType, e := p.ReadString()
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+	keyType, e = p.StringToTypeId(sKeyType)
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+
+	// read valueType
+	sValueType, e := p.ReadString()
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+	valueType, e = p.StringToTypeId(sValueType)
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+
+	// read size
+	iSize, e := p.ReadI64()
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+	size = int(iSize)
+
+	_, e = p.ParseObjectStart()
+	return keyType, valueType, size, e
+}
+
+func (p *TJSONProtocol) ReadMapEnd() error {
+	e := p.ParseObjectEnd()
+	if e != nil {
+		return e
+	}
+	return p.ParseListEnd()
+}
+
+func (p *TJSONProtocol) ReadListBegin() (elemType TType, size int, e error) {
+	return p.ParseElemListBegin()
+}
+
+func (p *TJSONProtocol) ReadListEnd() error {
+	return p.ParseListEnd()
+}
+
+func (p *TJSONProtocol) ReadSetBegin() (elemType TType, size int, e error) {
+	return p.ParseElemListBegin()
+}
+
+func (p *TJSONProtocol) ReadSetEnd() error {
+	return p.ParseListEnd()
+}
+
+func (p *TJSONProtocol) ReadBool() (bool, error) {
+	value, err := p.ReadI32()
+	return (value != 0), err
+}
+
+func (p *TJSONProtocol) ReadByte() (int8, error) {
+	v, err := p.ReadI64()
+	return int8(v), err
+}
+
+func (p *TJSONProtocol) ReadI16() (int16, error) {
+	v, err := p.ReadI64()
+	return int16(v), err
+}
+
+func (p *TJSONProtocol) ReadI32() (int32, error) {
+	v, err := p.ReadI64()
+	return int32(v), err
+}
+
+func (p *TJSONProtocol) ReadI64() (int64, error) {
+	v, _, err := p.ParseI64()
+	return v, err
+}
+
+func (p *TJSONProtocol) ReadDouble() (float64, error) {
+	v, _, err := p.ParseF64()
+	return v, err
+}
+
+func (p *TJSONProtocol) ReadString() (string, error) {
+	var v string
+	if err := p.ParsePreValue(); err != nil {
+		return v, err
+	}
+	f, _ := p.reader.Peek(1)
+	if len(f) > 0 && f[0] == JSON_QUOTE {
+		p.reader.ReadByte()
+		value, err := p.ParseStringBody()
+		v = value
+		if err != nil {
+			return v, err
+		}
+	} else if len(f) > 0 && f[0] == JSON_NULL[0] {
+		b := make([]byte, len(JSON_NULL))
+		_, err := p.reader.Read(b)
+		if err != nil {
+			return v, NewTProtocolException(err)
+		}
+		if string(b) != string(JSON_NULL) {
+			e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(b))
+			return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	} else {
+		e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(f))
+		return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	return v, p.ParsePostValue()
+}
+
+func (p *TJSONProtocol) ReadBinary() ([]byte, error) {
+	var v []byte
+	if err := p.ParsePreValue(); err != nil {
+		return nil, err
+	}
+	f, _ := p.reader.Peek(1)
+	if len(f) > 0 && f[0] == JSON_QUOTE {
+		p.reader.ReadByte()
+		value, err := p.ParseBase64EncodedBody()
+		v = value
+		if err != nil {
+			return v, err
+		}
+	} else if len(f) > 0 && f[0] == JSON_NULL[0] {
+		b := make([]byte, len(JSON_NULL))
+		_, err := p.reader.Read(b)
+		if err != nil {
+			return v, NewTProtocolException(err)
+		}
+		if string(b) != string(JSON_NULL) {
+			e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(b))
+			return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	} else {
+		e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(f))
+		return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+
+	return v, p.ParsePostValue()
+}
+
+func (p *TJSONProtocol) Flush() (err error) {
+	err = p.writer.Flush()
+	if err == nil {
+		err = p.trans.Flush()
+	}
+	return NewTProtocolException(err)
+}
+
+func (p *TJSONProtocol) Skip(fieldType TType) (err error) {
+	return SkipDefaultDepth(p, fieldType)
+}
+
+func (p *TJSONProtocol) Transport() TTransport {
+	return p.trans
+}
+
+func (p *TJSONProtocol) OutputElemListBegin(elemType TType, size int) error {
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	s, e1 := p.TypeIdToString(elemType)
+	if e1 != nil {
+		return e1
+	}
+	if e := p.WriteString(s); e != nil {
+		return e
+	}
+	if e := p.WriteI64(int64(size)); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TJSONProtocol) ParseElemListBegin() (elemType TType, size int, e error) {
+	if isNull, e := p.ParseListBegin(); isNull || e != nil {
+		return VOID, 0, e
+	}
+	sElemType, err := p.ReadString()
+	if err != nil {
+		return VOID, size, err
+	}
+	elemType, err = p.StringToTypeId(sElemType)
+	if err != nil {
+		return elemType, size, err
+	}
+	nSize, err2 := p.ReadI64()
+	size = int(nSize)
+	return elemType, size, err2
+}
+
+func (p *TJSONProtocol) readElemListBegin() (elemType TType, size int, e error) {
+	if isNull, e := p.ParseListBegin(); isNull || e != nil {
+		return VOID, 0, e
+	}
+	sElemType, err := p.ReadString()
+	if err != nil {
+		return VOID, size, err
+	}
+	elemType, err = p.StringToTypeId(sElemType)
+	if err != nil {
+		return elemType, size, err
+	}
+	nSize, err2 := p.ReadI64()
+	size = int(nSize)
+	return elemType, size, err2
+}
+
+func (p *TJSONProtocol) writeElemListBegin(elemType TType, size int) error {
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	s, e1 := p.TypeIdToString(elemType)
+	if e1 != nil {
+		return e1
+	}
+	if e := p.OutputString(s); e != nil {
+		return e
+	}
+	if e := p.OutputI64(int64(size)); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TJSONProtocol) TypeIdToString(fieldType TType) (string, error) {
+	switch byte(fieldType) {
+	case BOOL:
+		return "tf", nil
+	case BYTE:
+		return "i8", nil
+	case I16:
+		return "i16", nil
+	case I32:
+		return "i32", nil
+	case I64:
+		return "i64", nil
+	case DOUBLE:
+		return "dbl", nil
+	case STRING:
+		return "str", nil
+	case STRUCT:
+		return "rec", nil
+	case MAP:
+		return "map", nil
+	case SET:
+		return "set", nil
+	case LIST:
+		return "lst", nil
+	}
+
+	e := fmt.Errorf("Unknown fieldType: %d", int(fieldType))
+	return "", NewTProtocolExceptionWithType(INVALID_DATA, e)
+}
+
+func (p *TJSONProtocol) StringToTypeId(fieldType string) (TType, error) {
+	switch fieldType {
+	case "tf":
+		return TType(BOOL), nil
+	case "i8":
+		return TType(BYTE), nil
+	case "i16":
+		return TType(I16), nil
+	case "i32":
+		return TType(I32), nil
+	case "i64":
+		return TType(I64), nil
+	case "dbl":
+		return TType(DOUBLE), nil
+	case "str":
+		return TType(STRING), nil
+	case "rec":
+		return TType(STRUCT), nil
+	case "map":
+		return TType(MAP), nil
+	case "set":
+		return TType(SET), nil
+	case "lst":
+		return TType(LIST), nil
+	}
+
+	e := fmt.Errorf("Unknown type identifier: %s", fieldType)
+	return TType(STOP), NewTProtocolExceptionWithType(INVALID_DATA, e)
+}

vendor/github.com/apache/thrift/lib/go/thrift/memory_buffer.go

@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bytes"
+)
+
+// Memory buffer-based implementation of the TTransport interface.
+type TMemoryBuffer struct {
+	*bytes.Buffer
+	size int
+}
+
+type TMemoryBufferTransportFactory struct {
+	size int
+}
+
+func (p *TMemoryBufferTransportFactory) GetTransport(trans TTransport) TTransport {
+	if trans != nil {
+		t, ok := trans.(*TMemoryBuffer)
+		if ok && t.size > 0 {
+			return NewTMemoryBufferLen(t.size)
+		}
+	}
+	return NewTMemoryBufferLen(p.size)
+}
+
+func NewTMemoryBufferTransportFactory(size int) *TMemoryBufferTransportFactory {
+	return &TMemoryBufferTransportFactory{size: size}
+}
+
+func NewTMemoryBuffer() *TMemoryBuffer {
+	return &TMemoryBuffer{Buffer: &bytes.Buffer{}, size: 0}
+}
+
+func NewTMemoryBufferLen(size int) *TMemoryBuffer {
+	buf := make([]byte, 0, size)
+	return &TMemoryBuffer{Buffer: bytes.NewBuffer(buf), size: size}
+}
+
+func (p *TMemoryBuffer) IsOpen() bool {
+	return true
+}
+
+func (p *TMemoryBuffer) Open() error {
+	return nil
+}
+
+func (p *TMemoryBuffer) Close() error {
+	p.Buffer.Reset()
+	return nil
+}
+
+// Flushing a memory buffer is a no-op
+func (p *TMemoryBuffer) Flush() error {
+	return nil
+}
+
+func (p *TMemoryBuffer) RemainingBytes() (num_bytes uint64) {
+	return uint64(p.Buffer.Len())
+}

vendor/github.com/apache/thrift/lib/go/thrift/messagetype.go

@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// Message type constants in the Thrift protocol.
+type TMessageType int32
+
+const (
+	INVALID_TMESSAGE_TYPE TMessageType = 0
+	CALL                  TMessageType = 1
+	REPLY                 TMessageType = 2
+	EXCEPTION             TMessageType = 3
+	ONEWAY                TMessageType = 4
+)

vendor/github.com/apache/thrift/lib/go/thrift/multiplexed_protocol.go

@@ -0,0 +1,169 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"fmt"
+	"strings"
+)
+
+/*
+TMultiplexedProtocol is a protocol-independent concrete decorator
+that allows a Thrift client to communicate with a multiplexing Thrift server,
+by prepending the service name to the function name during function calls.
+
+NOTE: THIS IS NOT USED BY SERVERS.  On the server, use TMultiplexedProcessor to handle request
+from a multiplexing client.
+
+This example uses a single socket transport to invoke two services:
+
+socket := thrift.NewTSocketFromAddrTimeout(addr, TIMEOUT)
+transport := thrift.NewTFramedTransport(socket)
+protocol := thrift.NewTBinaryProtocolTransport(transport)
+
+mp := thrift.NewTMultiplexedProtocol(protocol, "Calculator")
+service := Calculator.NewCalculatorClient(mp)
+
+mp2 := thrift.NewTMultiplexedProtocol(protocol, "WeatherReport")
+service2 := WeatherReport.NewWeatherReportClient(mp2)
+
+err := transport.Open()
+if err != nil {
+	t.Fatal("Unable to open client socket", err)
+}
+
+fmt.Println(service.Add(2,2))
+fmt.Println(service2.GetTemperature())
+*/
+
+type TMultiplexedProtocol struct {
+	TProtocol
+	serviceName string
+}
+
+const MULTIPLEXED_SEPARATOR = ":"
+
+func NewTMultiplexedProtocol(protocol TProtocol, serviceName string) *TMultiplexedProtocol {
+	return &TMultiplexedProtocol{
+		TProtocol:   protocol,
+		serviceName: serviceName,
+	}
+}
+
+func (t *TMultiplexedProtocol) WriteMessageBegin(name string, typeId TMessageType, seqid int32) error {
+	if typeId == CALL || typeId == ONEWAY {
+		return t.TProtocol.WriteMessageBegin(t.serviceName+MULTIPLEXED_SEPARATOR+name, typeId, seqid)
+	} else {
+		return t.TProtocol.WriteMessageBegin(name, typeId, seqid)
+	}
+}
+
+/*
+TMultiplexedProcessor is a TProcessor allowing
+a single TServer to provide multiple services.
+
+To do so, you instantiate the processor and then register additional
+processors with it, as shown in the following example:
+
+var processor = thrift.NewTMultiplexedProcessor()
+
+firstProcessor :=
+processor.RegisterProcessor("FirstService", firstProcessor)
+
+processor.registerProcessor(
+  "Calculator",
+  Calculator.NewCalculatorProcessor(&CalculatorHandler{}),
+)
+
+processor.registerProcessor(
+  "WeatherReport",
+  WeatherReport.NewWeatherReportProcessor(&WeatherReportHandler{}),
+)
+
+serverTransport, err := thrift.NewTServerSocketTimeout(addr, TIMEOUT)
+if err != nil {
+  t.Fatal("Unable to create server socket", err)
+}
+server := thrift.NewTSimpleServer2(processor, serverTransport)
+server.Serve();
+*/
+
+type TMultiplexedProcessor struct {
+	serviceProcessorMap map[string]TProcessor
+	DefaultProcessor    TProcessor
+}
+
+func NewTMultiplexedProcessor() *TMultiplexedProcessor {
+	return &TMultiplexedProcessor{
+		serviceProcessorMap: make(map[string]TProcessor),
+	}
+}
+
+func (t *TMultiplexedProcessor) RegisterDefault(processor TProcessor) {
+	t.DefaultProcessor = processor
+}
+
+func (t *TMultiplexedProcessor) RegisterProcessor(name string, processor TProcessor) {
+	if t.serviceProcessorMap == nil {
+		t.serviceProcessorMap = make(map[string]TProcessor)
+	}
+	t.serviceProcessorMap[name] = processor
+}
+
+func (t *TMultiplexedProcessor) Process(in, out TProtocol) (bool, TException) {
+	name, typeId, seqid, err := in.ReadMessageBegin()
+	if err != nil {
+		return false, err
+	}
+	if typeId != CALL && typeId != ONEWAY {
+		return false, fmt.Errorf("Unexpected message type %v", typeId)
+	}
+	//extract the service name
+	v := strings.SplitN(name, MULTIPLEXED_SEPARATOR, 2)
+	if len(v) != 2 {
+		if t.DefaultProcessor != nil {
+			smb := NewStoredMessageProtocol(in, name, typeId, seqid)
+			return t.DefaultProcessor.Process(smb, out)
+		}
+		return false, fmt.Errorf("Service name not found in message name: %s.  Did you forget to use a TMultiplexProtocol in your client?", name)
+	}
+	actualProcessor, ok := t.serviceProcessorMap[v[0]]
+	if !ok {
+		return false, fmt.Errorf("Service name not found: %s.  Did you forget to call registerProcessor()?", v[0])
+	}
+	smb := NewStoredMessageProtocol(in, v[1], typeId, seqid)
+	return actualProcessor.Process(smb, out)
+}
+
+//Protocol that use stored message for ReadMessageBegin
+type storedMessageProtocol struct {
+	TProtocol
+	name   string
+	typeId TMessageType
+	seqid  int32
+}
+
+func NewStoredMessageProtocol(protocol TProtocol, name string, typeId TMessageType, seqid int32) *storedMessageProtocol {
+	return &storedMessageProtocol{protocol, name, typeId, seqid}
+}
+
+func (s *storedMessageProtocol) ReadMessageBegin() (name string, typeId TMessageType, seqid int32, err error) {
+	return s.name, s.typeId, s.seqid, nil
+}

vendor/github.com/apache/thrift/lib/go/thrift/numeric.go

@@ -0,0 +1,164 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"math"
+	"strconv"
+)
+
+type Numeric interface {
+	Int64() int64
+	Int32() int32
+	Int16() int16
+	Byte() byte
+	Int() int
+	Float64() float64
+	Float32() float32
+	String() string
+	isNull() bool
+}
+
+type numeric struct {
+	iValue int64
+	dValue float64
+	sValue string
+	isNil  bool
+}
+
+var (
+	INFINITY          Numeric
+	NEGATIVE_INFINITY Numeric
+	NAN               Numeric
+	ZERO              Numeric
+	NUMERIC_NULL      Numeric
+)
+
+func NewNumericFromDouble(dValue float64) Numeric {
+	if math.IsInf(dValue, 1) {
+		return INFINITY
+	}
+	if math.IsInf(dValue, -1) {
+		return NEGATIVE_INFINITY
+	}
+	if math.IsNaN(dValue) {
+		return NAN
+	}
+	iValue := int64(dValue)
+	sValue := strconv.FormatFloat(dValue, 'g', 10, 64)
+	isNil := false
+	return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNil}
+}
+
+func NewNumericFromI64(iValue int64) Numeric {
+	dValue := float64(iValue)
+	sValue := string(iValue)
+	isNil := false
+	return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNil}
+}
+
+func NewNumericFromI32(iValue int32) Numeric {
+	dValue := float64(iValue)
+	sValue := string(iValue)
+	isNil := false
+	return &numeric{iValue: int64(iValue), dValue: dValue, sValue: sValue, isNil: isNil}
+}
+
+func NewNumericFromString(sValue string) Numeric {
+	if sValue == INFINITY.String() {
+		return INFINITY
+	}
+	if sValue == NEGATIVE_INFINITY.String() {
+		return NEGATIVE_INFINITY
+	}
+	if sValue == NAN.String() {
+		return NAN
+	}
+	iValue, _ := strconv.ParseInt(sValue, 10, 64)
+	dValue, _ := strconv.ParseFloat(sValue, 64)
+	isNil := len(sValue) == 0
+	return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNil}
+}
+
+func NewNumericFromJSONString(sValue string, isNull bool) Numeric {
+	if isNull {
+		return NewNullNumeric()
+	}
+	if sValue == JSON_INFINITY {
+		return INFINITY
+	}
+	if sValue == JSON_NEGATIVE_INFINITY {
+		return NEGATIVE_INFINITY
+	}
+	if sValue == JSON_NAN {
+		return NAN
+	}
+	iValue, _ := strconv.ParseInt(sValue, 10, 64)
+	dValue, _ := strconv.ParseFloat(sValue, 64)
+	return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNull}
+}
+
+func NewNullNumeric() Numeric {
+	return &numeric{iValue: 0, dValue: 0.0, sValue: "", isNil: true}
+}
+
+func (p *numeric) Int64() int64 {
+	return p.iValue
+}
+
+func (p *numeric) Int32() int32 {
+	return int32(p.iValue)
+}
+
+func (p *numeric) Int16() int16 {
+	return int16(p.iValue)
+}
+
+func (p *numeric) Byte() byte {
+	return byte(p.iValue)
+}
+
+func (p *numeric) Int() int {
+	return int(p.iValue)
+}
+
+func (p *numeric) Float64() float64 {
+	return p.dValue
+}
+
+func (p *numeric) Float32() float32 {
+	return float32(p.dValue)
+}
+
+func (p *numeric) String() string {
+	return p.sValue
+}
+
+func (p *numeric) isNull() bool {
+	return p.isNil
+}
+
+func init() {
+	INFINITY = &numeric{iValue: 0, dValue: math.Inf(1), sValue: "Infinity", isNil: false}
+	NEGATIVE_INFINITY = &numeric{iValue: 0, dValue: math.Inf(-1), sValue: "-Infinity", isNil: false}
+	NAN = &numeric{iValue: 0, dValue: math.NaN(), sValue: "NaN", isNil: false}
+	ZERO = &numeric{iValue: 0, dValue: 0, sValue: "0", isNil: false}
+	NUMERIC_NULL = &numeric{iValue: 0, dValue: 0, sValue: "0", isNil: true}
+}

vendor/github.com/apache/thrift/lib/go/thrift/pointerize.go

@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+///////////////////////////////////////////////////////////////////////////////
+// This file is home to helpers that convert from various base types to
+// respective pointer types. This is necessary because Go does not permit
+// references to constants, nor can a pointer type to base type be allocated
+// and initialized in a single expression.
+//
+// E.g., this is not allowed:
+//
+//    var ip *int = &5
+//
+// But this *is* allowed:
+//
+//    func IntPtr(i int) *int { return &i }
+//    var ip *int = IntPtr(5)
+//
+// Since pointers to base types are commonplace as [optional] fields in
+// exported thrift structs, we factor such helpers here.
+///////////////////////////////////////////////////////////////////////////////
+
+func Float32Ptr(v float32) *float32 { return &v }
+func Float64Ptr(v float64) *float64 { return &v }
+func IntPtr(v int) *int             { return &v }
+func Int32Ptr(v int32) *int32       { return &v }
+func Int64Ptr(v int64) *int64       { return &v }
+func StringPtr(v string) *string    { return &v }
+func Uint32Ptr(v uint32) *uint32    { return &v }
+func Uint64Ptr(v uint64) *uint64    { return &v }
+func BoolPtr(v bool) *bool          { return &v }
+func ByteSlicePtr(v []byte) *[]byte { return &v }

vendor/github.com/apache/thrift/lib/go/thrift/processor.go

@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// A processor is a generic object which operates upon an input stream and
+// writes to some output stream.
+type TProcessor interface {
+	Process(in, out TProtocol) (bool, TException)
+}
+
+type TProcessorFunction interface {
+	Process(seqId int32, in, out TProtocol) (bool, TException)
+}

vendor/github.com/apache/thrift/lib/go/thrift/processor_factory.go

@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// The default processor factory just returns a singleton
+// instance.
+type TProcessorFactory interface {
+	GetProcessor(trans TTransport) TProcessor
+}
+
+type tProcessorFactory struct {
+	processor TProcessor
+}
+
+func NewTProcessorFactory(p TProcessor) TProcessorFactory {
+	return &tProcessorFactory{processor: p}
+}
+
+func (p *tProcessorFactory) GetProcessor(trans TTransport) TProcessor {
+	return p.processor
+}
+
+/**
+ * The default processor factory just returns a singleton
+ * instance.
+ */
+type TProcessorFunctionFactory interface {
+	GetProcessorFunction(trans TTransport) TProcessorFunction
+}
+
+type tProcessorFunctionFactory struct {
+	processor TProcessorFunction
+}
+
+func NewTProcessorFunctionFactory(p TProcessorFunction) TProcessorFunctionFactory {
+	return &tProcessorFunctionFactory{processor: p}
+}
+
+func (p *tProcessorFunctionFactory) GetProcessorFunction(trans TTransport) TProcessorFunction {
+	return p.processor
+}

vendor/github.com/apache/thrift/lib/go/thrift/protocol.go

@@ -0,0 +1,175 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"errors"
+)
+
+const (
+	VERSION_MASK = 0xffff0000
+	VERSION_1    = 0x80010000
+)
+
+type TProtocol interface {
+	WriteMessageBegin(name string, typeId TMessageType, seqid int32) error
+	WriteMessageEnd() error
+	WriteStructBegin(name string) error
+	WriteStructEnd() error
+	WriteFieldBegin(name string, typeId TType, id int16) error
+	WriteFieldEnd() error
+	WriteFieldStop() error
+	WriteMapBegin(keyType TType, valueType TType, size int) error
+	WriteMapEnd() error
+	WriteListBegin(elemType TType, size int) error
+	WriteListEnd() error
+	WriteSetBegin(elemType TType, size int) error
+	WriteSetEnd() error
+	WriteBool(value bool) error
+	WriteByte(value int8) error
+	WriteI16(value int16) error
+	WriteI32(value int32) error
+	WriteI64(value int64) error
+	WriteDouble(value float64) error
+	WriteString(value string) error
+	WriteBinary(value []byte) error
+
+	ReadMessageBegin() (name string, typeId TMessageType, seqid int32, err error)
+	ReadMessageEnd() error
+	ReadStructBegin() (name string, err error)
+	ReadStructEnd() error
+	ReadFieldBegin() (name string, typeId TType, id int16, err error)
+	ReadFieldEnd() error
+	ReadMapBegin() (keyType TType, valueType TType, size int, err error)
+	ReadMapEnd() error
+	ReadListBegin() (elemType TType, size int, err error)
+	ReadListEnd() error
+	ReadSetBegin() (elemType TType, size int, err error)
+	ReadSetEnd() error
+	ReadBool() (value bool, err error)
+	ReadByte() (value int8, err error)
+	ReadI16() (value int16, err error)
+	ReadI32() (value int32, err error)
+	ReadI64() (value int64, err error)
+	ReadDouble() (value float64, err error)
+	ReadString() (value string, err error)
+	ReadBinary() (value []byte, err error)
+
+	Skip(fieldType TType) (err error)
+	Flush() (err error)
+
+	Transport() TTransport
+}
+
+// The maximum recursive depth the skip() function will traverse
+const DEFAULT_RECURSION_DEPTH = 64
+
+// Skips over the next data element from the provided input TProtocol object.
+func SkipDefaultDepth(prot TProtocol, typeId TType) (err error) {
+	return Skip(prot, typeId, DEFAULT_RECURSION_DEPTH)
+}
+
+// Skips over the next data element from the provided input TProtocol object.
+func Skip(self TProtocol, fieldType TType, maxDepth int) (err error) {
+	
+    if maxDepth <= 0 {
+		return NewTProtocolExceptionWithType( DEPTH_LIMIT, errors.New("Depth limit exceeded"))
+	}
+
+	switch fieldType {
+	case STOP:
+		return
+	case BOOL:
+		_, err = self.ReadBool()
+		return
+	case BYTE:
+		_, err = self.ReadByte()
+		return
+	case I16:
+		_, err = self.ReadI16()
+		return
+	case I32:
+		_, err = self.ReadI32()
+		return
+	case I64:
+		_, err = self.ReadI64()
+		return
+	case DOUBLE:
+		_, err = self.ReadDouble()
+		return
+	case STRING:
+		_, err = self.ReadString()
+		return
+	case STRUCT:
+		if _, err = self.ReadStructBegin(); err != nil {
+			return err
+		}
+		for {
+			_, typeId, _, _ := self.ReadFieldBegin()
+			if typeId == STOP {
+				break
+			}
+			err := Skip(self, typeId, maxDepth-1)
+			if err != nil {
+				return err
+			}
+			self.ReadFieldEnd()
+		}
+		return self.ReadStructEnd()
+	case MAP:
+		keyType, valueType, size, err := self.ReadMapBegin()
+		if err != nil {
+			return err
+		}
+		for i := 0; i < size; i++ {
+			err := Skip(self, keyType, maxDepth-1)
+			if err != nil {
+				return err
+			}
+			self.Skip(valueType)
+		}
+		return self.ReadMapEnd()
+	case SET:
+		elemType, size, err := self.ReadSetBegin()
+		if err != nil {
+			return err
+		}
+		for i := 0; i < size; i++ {
+			err := Skip(self, elemType, maxDepth-1)
+			if err != nil {
+				return err
+			}
+		}
+		return self.ReadSetEnd()
+	case LIST:
+		elemType, size, err := self.ReadListBegin()
+		if err != nil {
+			return err
+		}
+		for i := 0; i < size; i++ {
+			err := Skip(self, elemType, maxDepth-1)
+			if err != nil {
+				return err
+			}
+		}
+		return self.ReadListEnd()
+	}
+	return nil
+}

vendor/github.com/apache/thrift/lib/go/thrift/protocol_exception.go

@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"encoding/base64"
+)
+
+// Thrift Protocol exception
+type TProtocolException interface {
+	TException
+	TypeId() int
+}
+
+const (
+	UNKNOWN_PROTOCOL_EXCEPTION = 0
+	INVALID_DATA               = 1
+	NEGATIVE_SIZE              = 2
+	SIZE_LIMIT                 = 3
+	BAD_VERSION                = 4
+	NOT_IMPLEMENTED            = 5
+	DEPTH_LIMIT                = 6
+)
+
+type tProtocolException struct {
+	typeId  int
+	message string
+}
+
+func (p *tProtocolException) TypeId() int {
+	return p.typeId
+}
+
+func (p *tProtocolException) String() string {
+	return p.message
+}
+
+func (p *tProtocolException) Error() string {
+	return p.message
+}
+
+func NewTProtocolException(err error) TProtocolException {
+	if err == nil {
+		return nil
+	}
+	if e,ok := err.(TProtocolException); ok {
+		return e
+	}
+	if _, ok := err.(base64.CorruptInputError); ok {
+		return &tProtocolException{INVALID_DATA, err.Error()}
+	}
+	return &tProtocolException{UNKNOWN_PROTOCOL_EXCEPTION, err.Error()}
+}
+
+func NewTProtocolExceptionWithType(errType int, err error) TProtocolException {
+	if err == nil {
+		return nil
+	}
+	return &tProtocolException{errType, err.Error()}
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/protocol_factory.go

@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// Factory interface for constructing protocol instances.
+type TProtocolFactory interface {
+	GetProtocol(trans TTransport) TProtocol
+}

vendor/github.com/apache/thrift/lib/go/thrift/rich_transport.go

@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import "io"
+
+type RichTransport struct {
+	TTransport
+}
+
+// Wraps Transport to provide TRichTransport interface
+func NewTRichTransport(trans TTransport) *RichTransport {
+	return &RichTransport{trans}
+}
+
+func (r *RichTransport) ReadByte() (c byte, err error) {
+	return readByte(r.TTransport)
+}
+
+func (r *RichTransport) WriteByte(c byte) error {
+	return writeByte(r.TTransport, c)
+}
+
+func (r *RichTransport) WriteString(s string) (n int, err error) {
+	return r.Write([]byte(s))
+}
+
+func (r *RichTransport) RemainingBytes() (num_bytes uint64) {
+	return r.TTransport.RemainingBytes()
+}
+
+func readByte(r io.Reader) (c byte, err error) {
+	v := [1]byte{0}
+	n, err := r.Read(v[0:1])
+	if n > 0 && (err == nil || err == io.EOF) {
+		return v[0], nil
+	}
+	if n > 0 && err != nil {
+		return v[0], err
+	}
+	if err != nil {
+		return 0, err
+	}
+	return v[0], nil
+}
+
+func writeByte(w io.Writer, c byte) error {
+	v := [1]byte{c}
+	_, err := w.Write(v[0:1])
+	return err
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/serializer.go

@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+type TSerializer struct {
+	Transport *TMemoryBuffer
+	Protocol  TProtocol
+}
+
+type TStruct interface {
+	Write(p TProtocol) error
+	Read(p TProtocol) error
+}
+
+func NewTSerializer() *TSerializer {
+	transport := NewTMemoryBufferLen(1024)
+	protocol := NewTBinaryProtocolFactoryDefault().GetProtocol(transport)
+
+	return &TSerializer{
+		transport,
+		protocol}
+}
+
+func (t *TSerializer) WriteString(msg TStruct) (s string, err error) {
+	t.Transport.Reset()
+
+	if err = msg.Write(t.Protocol); err != nil {
+		return
+	}
+
+	if err = t.Protocol.Flush(); err != nil {
+		return
+	}
+	if err = t.Transport.Flush(); err != nil {
+		return
+	}
+
+	return t.Transport.String(), nil
+}
+
+func (t *TSerializer) Write(msg TStruct) (b []byte, err error) {
+	t.Transport.Reset()
+
+	if err = msg.Write(t.Protocol); err != nil {
+		return
+	}
+
+	if err = t.Protocol.Flush(); err != nil {
+		return
+	}
+
+	if err = t.Transport.Flush(); err != nil {
+		return
+	}
+
+	b = append(b, t.Transport.Bytes()...)
+	return
+}

vendor/github.com/apache/thrift/lib/go/thrift/server.go

@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+type TServer interface {
+	ProcessorFactory() TProcessorFactory
+	ServerTransport() TServerTransport
+	InputTransportFactory() TTransportFactory
+	OutputTransportFactory() TTransportFactory
+	InputProtocolFactory() TProtocolFactory
+	OutputProtocolFactory() TProtocolFactory
+
+	// Starts the server
+	Serve() error
+	// Stops the server. This is optional on a per-implementation basis. Not
+	// all servers are required to be cleanly stoppable.
+	Stop() error
+}

vendor/github.com/apache/thrift/lib/go/thrift/server_socket.go

@@ -0,0 +1,122 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"net"
+	"sync"
+	"time"
+)
+
+type TServerSocket struct {
+	listener      net.Listener
+	addr          net.Addr
+	clientTimeout time.Duration
+
+	// Protects the interrupted value to make it thread safe.
+	mu          sync.RWMutex
+	interrupted bool
+}
+
+func NewTServerSocket(listenAddr string) (*TServerSocket, error) {
+	return NewTServerSocketTimeout(listenAddr, 0)
+}
+
+func NewTServerSocketTimeout(listenAddr string, clientTimeout time.Duration) (*TServerSocket, error) {
+	addr, err := net.ResolveTCPAddr("tcp", listenAddr)
+	if err != nil {
+		return nil, err
+	}
+	return &TServerSocket{addr: addr, clientTimeout: clientTimeout}, nil
+}
+
+func (p *TServerSocket) Listen() error {
+	if p.IsListening() {
+		return nil
+	}
+	l, err := net.Listen(p.addr.Network(), p.addr.String())
+	if err != nil {
+		return err
+	}
+	p.listener = l
+	return nil
+}
+
+func (p *TServerSocket) Accept() (TTransport, error) {
+	p.mu.RLock()
+	interrupted := p.interrupted
+	p.mu.RUnlock()
+
+	if interrupted {
+		return nil, errTransportInterrupted
+	}
+	if p.listener == nil {
+		return nil, NewTTransportException(NOT_OPEN, "No underlying server socket")
+	}
+	conn, err := p.listener.Accept()
+	if err != nil {
+		return nil, NewTTransportExceptionFromError(err)
+	}
+	return NewTSocketFromConnTimeout(conn, p.clientTimeout), nil
+}
+
+// Checks whether the socket is listening.
+func (p *TServerSocket) IsListening() bool {
+	return p.listener != nil
+}
+
+// Connects the socket, creating a new socket object if necessary.
+func (p *TServerSocket) Open() error {
+	if p.IsListening() {
+		return NewTTransportException(ALREADY_OPEN, "Server socket already open")
+	}
+	if l, err := net.Listen(p.addr.Network(), p.addr.String()); err != nil {
+		return err
+	} else {
+		p.listener = l
+	}
+	return nil
+}
+
+func (p *TServerSocket) Addr() net.Addr {
+	if p.listener != nil {
+		return p.listener.Addr()
+	}
+	return p.addr
+}
+
+func (p *TServerSocket) Close() error {
+	defer func() {
+		p.listener = nil
+	}()
+	if p.IsListening() {
+		return p.listener.Close()
+	}
+	return nil
+}
+
+func (p *TServerSocket) Interrupt() error {
+	p.mu.Lock()
+	p.interrupted = true
+	p.Close()
+	p.mu.Unlock()
+
+	return nil
+}

vendor/github.com/apache/thrift/lib/go/thrift/server_transport.go

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// Server transport. Object which provides client transports.
+type TServerTransport interface {
+	Listen() error
+	Accept() (TTransport, error)
+	Close() error
+
+	// Optional method implementation. This signals to the server transport
+	// that it should break out of any accept() or listen() that it is currently
+	// blocked on. This method, if implemented, MUST be thread safe, as it may
+	// be called from a different thread context than the other TServerTransport
+	// methods.
+	Interrupt() error
+}

vendor/github.com/apache/thrift/lib/go/thrift/simple_json_protocol.go

@@ -0,0 +1,1337 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"math"
+	"strconv"
+)
+
+type _ParseContext int
+
+const (
+	_CONTEXT_IN_TOPLEVEL          _ParseContext = 1
+	_CONTEXT_IN_LIST_FIRST        _ParseContext = 2
+	_CONTEXT_IN_LIST              _ParseContext = 3
+	_CONTEXT_IN_OBJECT_FIRST      _ParseContext = 4
+	_CONTEXT_IN_OBJECT_NEXT_KEY   _ParseContext = 5
+	_CONTEXT_IN_OBJECT_NEXT_VALUE _ParseContext = 6
+)
+
+func (p _ParseContext) String() string {
+	switch p {
+	case _CONTEXT_IN_TOPLEVEL:
+		return "TOPLEVEL"
+	case _CONTEXT_IN_LIST_FIRST:
+		return "LIST-FIRST"
+	case _CONTEXT_IN_LIST:
+		return "LIST"
+	case _CONTEXT_IN_OBJECT_FIRST:
+		return "OBJECT-FIRST"
+	case _CONTEXT_IN_OBJECT_NEXT_KEY:
+		return "OBJECT-NEXT-KEY"
+	case _CONTEXT_IN_OBJECT_NEXT_VALUE:
+		return "OBJECT-NEXT-VALUE"
+	}
+	return "UNKNOWN-PARSE-CONTEXT"
+}
+
+// JSON protocol implementation for thrift.
+//
+// This protocol produces/consumes a simple output format
+// suitable for parsing by scripting languages.  It should not be
+// confused with the full-featured TJSONProtocol.
+//
+type TSimpleJSONProtocol struct {
+	trans TTransport
+
+	parseContextStack []int
+	dumpContext       []int
+
+	writer *bufio.Writer
+	reader *bufio.Reader
+}
+
+// Constructor
+func NewTSimpleJSONProtocol(t TTransport) *TSimpleJSONProtocol {
+	v := &TSimpleJSONProtocol{trans: t,
+		writer: bufio.NewWriter(t),
+		reader: bufio.NewReader(t),
+	}
+	v.parseContextStack = append(v.parseContextStack, int(_CONTEXT_IN_TOPLEVEL))
+	v.dumpContext = append(v.dumpContext, int(_CONTEXT_IN_TOPLEVEL))
+	return v
+}
+
+// Factory
+type TSimpleJSONProtocolFactory struct{}
+
+func (p *TSimpleJSONProtocolFactory) GetProtocol(trans TTransport) TProtocol {
+	return NewTSimpleJSONProtocol(trans)
+}
+
+func NewTSimpleJSONProtocolFactory() *TSimpleJSONProtocolFactory {
+	return &TSimpleJSONProtocolFactory{}
+}
+
+var (
+	JSON_COMMA                   []byte
+	JSON_COLON                   []byte
+	JSON_LBRACE                  []byte
+	JSON_RBRACE                  []byte
+	JSON_LBRACKET                []byte
+	JSON_RBRACKET                []byte
+	JSON_QUOTE                   byte
+	JSON_QUOTE_BYTES             []byte
+	JSON_NULL                    []byte
+	JSON_TRUE                    []byte
+	JSON_FALSE                   []byte
+	JSON_INFINITY                string
+	JSON_NEGATIVE_INFINITY       string
+	JSON_NAN                     string
+	JSON_INFINITY_BYTES          []byte
+	JSON_NEGATIVE_INFINITY_BYTES []byte
+	JSON_NAN_BYTES               []byte
+	json_nonbase_map_elem_bytes  []byte
+)
+
+func init() {
+	JSON_COMMA = []byte{','}
+	JSON_COLON = []byte{':'}
+	JSON_LBRACE = []byte{'{'}
+	JSON_RBRACE = []byte{'}'}
+	JSON_LBRACKET = []byte{'['}
+	JSON_RBRACKET = []byte{']'}
+	JSON_QUOTE = '"'
+	JSON_QUOTE_BYTES = []byte{'"'}
+	JSON_NULL = []byte{'n', 'u', 'l', 'l'}
+	JSON_TRUE = []byte{'t', 'r', 'u', 'e'}
+	JSON_FALSE = []byte{'f', 'a', 'l', 's', 'e'}
+	JSON_INFINITY = "Infinity"
+	JSON_NEGATIVE_INFINITY = "-Infinity"
+	JSON_NAN = "NaN"
+	JSON_INFINITY_BYTES = []byte{'I', 'n', 'f', 'i', 'n', 'i', 't', 'y'}
+	JSON_NEGATIVE_INFINITY_BYTES = []byte{'-', 'I', 'n', 'f', 'i', 'n', 'i', 't', 'y'}
+	JSON_NAN_BYTES = []byte{'N', 'a', 'N'}
+	json_nonbase_map_elem_bytes = []byte{']', ',', '['}
+}
+
+func jsonQuote(s string) string {
+	b, _ := json.Marshal(s)
+	s1 := string(b)
+	return s1
+}
+
+func jsonUnquote(s string) (string, bool) {
+	s1 := new(string)
+	err := json.Unmarshal([]byte(s), s1)
+	return *s1, err == nil
+}
+
+func mismatch(expected, actual string) error {
+	return fmt.Errorf("Expected '%s' but found '%s' while parsing JSON.", expected, actual)
+}
+
+func (p *TSimpleJSONProtocol) WriteMessageBegin(name string, typeId TMessageType, seqId int32) error {
+	p.resetContextStack() // THRIFT-3735
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	if e := p.WriteString(name); e != nil {
+		return e
+	}
+	if e := p.WriteByte(int8(typeId)); e != nil {
+		return e
+	}
+	if e := p.WriteI32(seqId); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) WriteMessageEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TSimpleJSONProtocol) WriteStructBegin(name string) error {
+	if e := p.OutputObjectBegin(); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) WriteStructEnd() error {
+	return p.OutputObjectEnd()
+}
+
+func (p *TSimpleJSONProtocol) WriteFieldBegin(name string, typeId TType, id int16) error {
+	if e := p.WriteString(name); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) WriteFieldEnd() error {
+	//return p.OutputListEnd()
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) WriteFieldStop() error { return nil }
+
+func (p *TSimpleJSONProtocol) WriteMapBegin(keyType TType, valueType TType, size int) error {
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	if e := p.WriteByte(int8(keyType)); e != nil {
+		return e
+	}
+	if e := p.WriteByte(int8(valueType)); e != nil {
+		return e
+	}
+	return p.WriteI32(int32(size))
+}
+
+func (p *TSimpleJSONProtocol) WriteMapEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TSimpleJSONProtocol) WriteListBegin(elemType TType, size int) error {
+	return p.OutputElemListBegin(elemType, size)
+}
+
+func (p *TSimpleJSONProtocol) WriteListEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TSimpleJSONProtocol) WriteSetBegin(elemType TType, size int) error {
+	return p.OutputElemListBegin(elemType, size)
+}
+
+func (p *TSimpleJSONProtocol) WriteSetEnd() error {
+	return p.OutputListEnd()
+}
+
+func (p *TSimpleJSONProtocol) WriteBool(b bool) error {
+	return p.OutputBool(b)
+}
+
+func (p *TSimpleJSONProtocol) WriteByte(b int8) error {
+	return p.WriteI32(int32(b))
+}
+
+func (p *TSimpleJSONProtocol) WriteI16(v int16) error {
+	return p.WriteI32(int32(v))
+}
+
+func (p *TSimpleJSONProtocol) WriteI32(v int32) error {
+	return p.OutputI64(int64(v))
+}
+
+func (p *TSimpleJSONProtocol) WriteI64(v int64) error {
+	return p.OutputI64(int64(v))
+}
+
+func (p *TSimpleJSONProtocol) WriteDouble(v float64) error {
+	return p.OutputF64(v)
+}
+
+func (p *TSimpleJSONProtocol) WriteString(v string) error {
+	return p.OutputString(v)
+}
+
+func (p *TSimpleJSONProtocol) WriteBinary(v []byte) error {
+	// JSON library only takes in a string,
+	// not an arbitrary byte array, to ensure bytes are transmitted
+	// efficiently we must convert this into a valid JSON string
+	// therefore we use base64 encoding to avoid excessive escaping/quoting
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	if _, e := p.write(JSON_QUOTE_BYTES); e != nil {
+		return NewTProtocolException(e)
+	}
+	writer := base64.NewEncoder(base64.StdEncoding, p.writer)
+	if _, e := writer.Write(v); e != nil {
+		p.writer.Reset(p.trans) // THRIFT-3735
+		return NewTProtocolException(e)
+	}
+	if e := writer.Close(); e != nil {
+		return NewTProtocolException(e)
+	}
+	if _, e := p.write(JSON_QUOTE_BYTES); e != nil {
+		return NewTProtocolException(e)
+	}
+	return p.OutputPostValue()
+}
+
+// Reading methods.
+func (p *TSimpleJSONProtocol) ReadMessageBegin() (name string, typeId TMessageType, seqId int32, err error) {
+	p.resetContextStack() // THRIFT-3735
+	if isNull, err := p.ParseListBegin(); isNull || err != nil {
+		return name, typeId, seqId, err
+	}
+	if name, err = p.ReadString(); err != nil {
+		return name, typeId, seqId, err
+	}
+	bTypeId, err := p.ReadByte()
+	typeId = TMessageType(bTypeId)
+	if err != nil {
+		return name, typeId, seqId, err
+	}
+	if seqId, err = p.ReadI32(); err != nil {
+		return name, typeId, seqId, err
+	}
+	return name, typeId, seqId, nil
+}
+
+func (p *TSimpleJSONProtocol) ReadMessageEnd() error {
+	return p.ParseListEnd()
+}
+
+func (p *TSimpleJSONProtocol) ReadStructBegin() (name string, err error) {
+	_, err = p.ParseObjectStart()
+	return "", err
+}
+
+func (p *TSimpleJSONProtocol) ReadStructEnd() error {
+	return p.ParseObjectEnd()
+}
+
+func (p *TSimpleJSONProtocol) ReadFieldBegin() (string, TType, int16, error) {
+	if err := p.ParsePreValue(); err != nil {
+		return "", STOP, 0, err
+	}
+	b, _ := p.reader.Peek(1)
+	if len(b) > 0 {
+		switch b[0] {
+		case JSON_RBRACE[0]:
+			return "", STOP, 0, nil
+		case JSON_QUOTE:
+			p.reader.ReadByte()
+			name, err := p.ParseStringBody()
+			// simplejson is not meant to be read back into thrift
+			// - see http://wiki.apache.org/thrift/ThriftUsageJava
+			// - use JSON instead
+			if err != nil {
+				return name, STOP, 0, err
+			}
+			return name, STOP, -1, p.ParsePostValue()
+			/*
+			   if err = p.ParsePostValue(); err != nil {
+			     return name, STOP, 0, err
+			   }
+			   if isNull, err := p.ParseListBegin(); isNull || err != nil {
+			     return name, STOP, 0, err
+			   }
+			   bType, err := p.ReadByte()
+			   thetype := TType(bType)
+			   if err != nil {
+			     return name, thetype, 0, err
+			   }
+			   id, err := p.ReadI16()
+			   return name, thetype, id, err
+			*/
+		}
+		e := fmt.Errorf("Expected \"}\" or '\"', but found: '%s'", string(b))
+		return "", STOP, 0, NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	return "", STOP, 0, NewTProtocolException(io.EOF)
+}
+
+func (p *TSimpleJSONProtocol) ReadFieldEnd() error {
+	return nil
+	//return p.ParseListEnd()
+}
+
+func (p *TSimpleJSONProtocol) ReadMapBegin() (keyType TType, valueType TType, size int, e error) {
+	if isNull, e := p.ParseListBegin(); isNull || e != nil {
+		return VOID, VOID, 0, e
+	}
+
+	// read keyType
+	bKeyType, e := p.ReadByte()
+	keyType = TType(bKeyType)
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+
+	// read valueType
+	bValueType, e := p.ReadByte()
+	valueType = TType(bValueType)
+	if e != nil {
+		return keyType, valueType, size, e
+	}
+
+	// read size
+	iSize, err := p.ReadI64()
+	size = int(iSize)
+	return keyType, valueType, size, err
+}
+
+func (p *TSimpleJSONProtocol) ReadMapEnd() error {
+	return p.ParseListEnd()
+}
+
+func (p *TSimpleJSONProtocol) ReadListBegin() (elemType TType, size int, e error) {
+	return p.ParseElemListBegin()
+}
+
+func (p *TSimpleJSONProtocol) ReadListEnd() error {
+	return p.ParseListEnd()
+}
+
+func (p *TSimpleJSONProtocol) ReadSetBegin() (elemType TType, size int, e error) {
+	return p.ParseElemListBegin()
+}
+
+func (p *TSimpleJSONProtocol) ReadSetEnd() error {
+	return p.ParseListEnd()
+}
+
+func (p *TSimpleJSONProtocol) ReadBool() (bool, error) {
+	var value bool
+
+	if err := p.ParsePreValue(); err != nil {
+		return value, err
+	}
+	f, _ := p.reader.Peek(1)
+	if len(f) > 0 {
+		switch f[0] {
+		case JSON_TRUE[0]:
+			b := make([]byte, len(JSON_TRUE))
+			_, err := p.reader.Read(b)
+			if err != nil {
+				return false, NewTProtocolException(err)
+			}
+			if string(b) == string(JSON_TRUE) {
+				value = true
+			} else {
+				e := fmt.Errorf("Expected \"true\" but found: %s", string(b))
+				return value, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			break
+		case JSON_FALSE[0]:
+			b := make([]byte, len(JSON_FALSE))
+			_, err := p.reader.Read(b)
+			if err != nil {
+				return false, NewTProtocolException(err)
+			}
+			if string(b) == string(JSON_FALSE) {
+				value = false
+			} else {
+				e := fmt.Errorf("Expected \"false\" but found: %s", string(b))
+				return value, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			break
+		case JSON_NULL[0]:
+			b := make([]byte, len(JSON_NULL))
+			_, err := p.reader.Read(b)
+			if err != nil {
+				return false, NewTProtocolException(err)
+			}
+			if string(b) == string(JSON_NULL) {
+				value = false
+			} else {
+				e := fmt.Errorf("Expected \"null\" but found: %s", string(b))
+				return value, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+		default:
+			e := fmt.Errorf("Expected \"true\", \"false\", or \"null\" but found: %s", string(f))
+			return value, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	}
+	return value, p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) ReadByte() (int8, error) {
+	v, err := p.ReadI64()
+	return int8(v), err
+}
+
+func (p *TSimpleJSONProtocol) ReadI16() (int16, error) {
+	v, err := p.ReadI64()
+	return int16(v), err
+}
+
+func (p *TSimpleJSONProtocol) ReadI32() (int32, error) {
+	v, err := p.ReadI64()
+	return int32(v), err
+}
+
+func (p *TSimpleJSONProtocol) ReadI64() (int64, error) {
+	v, _, err := p.ParseI64()
+	return v, err
+}
+
+func (p *TSimpleJSONProtocol) ReadDouble() (float64, error) {
+	v, _, err := p.ParseF64()
+	return v, err
+}
+
+func (p *TSimpleJSONProtocol) ReadString() (string, error) {
+	var v string
+	if err := p.ParsePreValue(); err != nil {
+		return v, err
+	}
+	f, _ := p.reader.Peek(1)
+	if len(f) > 0 && f[0] == JSON_QUOTE {
+		p.reader.ReadByte()
+		value, err := p.ParseStringBody()
+		v = value
+		if err != nil {
+			return v, err
+		}
+	} else if len(f) > 0 && f[0] == JSON_NULL[0] {
+		b := make([]byte, len(JSON_NULL))
+		_, err := p.reader.Read(b)
+		if err != nil {
+			return v, NewTProtocolException(err)
+		}
+		if string(b) != string(JSON_NULL) {
+			e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(b))
+			return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	} else {
+		e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(f))
+		return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	return v, p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) ReadBinary() ([]byte, error) {
+	var v []byte
+	if err := p.ParsePreValue(); err != nil {
+		return nil, err
+	}
+	f, _ := p.reader.Peek(1)
+	if len(f) > 0 && f[0] == JSON_QUOTE {
+		p.reader.ReadByte()
+		value, err := p.ParseBase64EncodedBody()
+		v = value
+		if err != nil {
+			return v, err
+		}
+	} else if len(f) > 0 && f[0] == JSON_NULL[0] {
+		b := make([]byte, len(JSON_NULL))
+		_, err := p.reader.Read(b)
+		if err != nil {
+			return v, NewTProtocolException(err)
+		}
+		if string(b) != string(JSON_NULL) {
+			e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(b))
+			return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	} else {
+		e := fmt.Errorf("Expected a JSON string, found unquoted data started with %s", string(f))
+		return v, NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+
+	return v, p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) Flush() (err error) {
+	return NewTProtocolException(p.writer.Flush())
+}
+
+func (p *TSimpleJSONProtocol) Skip(fieldType TType) (err error) {
+	return SkipDefaultDepth(p, fieldType)
+}
+
+func (p *TSimpleJSONProtocol) Transport() TTransport {
+	return p.trans
+}
+
+func (p *TSimpleJSONProtocol) OutputPreValue() error {
+	cxt := _ParseContext(p.dumpContext[len(p.dumpContext)-1])
+	switch cxt {
+	case _CONTEXT_IN_LIST, _CONTEXT_IN_OBJECT_NEXT_KEY:
+		if _, e := p.write(JSON_COMMA); e != nil {
+			return NewTProtocolException(e)
+		}
+		break
+	case _CONTEXT_IN_OBJECT_NEXT_VALUE:
+		if _, e := p.write(JSON_COLON); e != nil {
+			return NewTProtocolException(e)
+		}
+		break
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) OutputPostValue() error {
+	cxt := _ParseContext(p.dumpContext[len(p.dumpContext)-1])
+	switch cxt {
+	case _CONTEXT_IN_LIST_FIRST:
+		p.dumpContext = p.dumpContext[:len(p.dumpContext)-1]
+		p.dumpContext = append(p.dumpContext, int(_CONTEXT_IN_LIST))
+		break
+	case _CONTEXT_IN_OBJECT_FIRST:
+		p.dumpContext = p.dumpContext[:len(p.dumpContext)-1]
+		p.dumpContext = append(p.dumpContext, int(_CONTEXT_IN_OBJECT_NEXT_VALUE))
+		break
+	case _CONTEXT_IN_OBJECT_NEXT_KEY:
+		p.dumpContext = p.dumpContext[:len(p.dumpContext)-1]
+		p.dumpContext = append(p.dumpContext, int(_CONTEXT_IN_OBJECT_NEXT_VALUE))
+		break
+	case _CONTEXT_IN_OBJECT_NEXT_VALUE:
+		p.dumpContext = p.dumpContext[:len(p.dumpContext)-1]
+		p.dumpContext = append(p.dumpContext, int(_CONTEXT_IN_OBJECT_NEXT_KEY))
+		break
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) OutputBool(value bool) error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	var v string
+	if value {
+		v = string(JSON_TRUE)
+	} else {
+		v = string(JSON_FALSE)
+	}
+	switch _ParseContext(p.dumpContext[len(p.dumpContext)-1]) {
+	case _CONTEXT_IN_OBJECT_FIRST, _CONTEXT_IN_OBJECT_NEXT_KEY:
+		v = jsonQuote(v)
+	default:
+	}
+	if e := p.OutputStringData(v); e != nil {
+		return e
+	}
+	return p.OutputPostValue()
+}
+
+func (p *TSimpleJSONProtocol) OutputNull() error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	if _, e := p.write(JSON_NULL); e != nil {
+		return NewTProtocolException(e)
+	}
+	return p.OutputPostValue()
+}
+
+func (p *TSimpleJSONProtocol) OutputF64(value float64) error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	var v string
+	if math.IsNaN(value) {
+		v = string(JSON_QUOTE) + JSON_NAN + string(JSON_QUOTE)
+	} else if math.IsInf(value, 1) {
+		v = string(JSON_QUOTE) + JSON_INFINITY + string(JSON_QUOTE)
+	} else if math.IsInf(value, -1) {
+		v = string(JSON_QUOTE) + JSON_NEGATIVE_INFINITY + string(JSON_QUOTE)
+	} else {
+		v = strconv.FormatFloat(value, 'g', -1, 64)
+		switch _ParseContext(p.dumpContext[len(p.dumpContext)-1]) {
+		case _CONTEXT_IN_OBJECT_FIRST, _CONTEXT_IN_OBJECT_NEXT_KEY:
+			v = string(JSON_QUOTE) + v + string(JSON_QUOTE)
+		default:
+		}
+	}
+	if e := p.OutputStringData(v); e != nil {
+		return e
+	}
+	return p.OutputPostValue()
+}
+
+func (p *TSimpleJSONProtocol) OutputI64(value int64) error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	v := strconv.FormatInt(value, 10)
+	switch _ParseContext(p.dumpContext[len(p.dumpContext)-1]) {
+	case _CONTEXT_IN_OBJECT_FIRST, _CONTEXT_IN_OBJECT_NEXT_KEY:
+		v = jsonQuote(v)
+	default:
+	}
+	if e := p.OutputStringData(v); e != nil {
+		return e
+	}
+	return p.OutputPostValue()
+}
+
+func (p *TSimpleJSONProtocol) OutputString(s string) error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	if e := p.OutputStringData(jsonQuote(s)); e != nil {
+		return e
+	}
+	return p.OutputPostValue()
+}
+
+func (p *TSimpleJSONProtocol) OutputStringData(s string) error {
+	_, e := p.write([]byte(s))
+	return NewTProtocolException(e)
+}
+
+func (p *TSimpleJSONProtocol) OutputObjectBegin() error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	if _, e := p.write(JSON_LBRACE); e != nil {
+		return NewTProtocolException(e)
+	}
+	p.dumpContext = append(p.dumpContext, int(_CONTEXT_IN_OBJECT_FIRST))
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) OutputObjectEnd() error {
+	if _, e := p.write(JSON_RBRACE); e != nil {
+		return NewTProtocolException(e)
+	}
+	p.dumpContext = p.dumpContext[:len(p.dumpContext)-1]
+	if e := p.OutputPostValue(); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) OutputListBegin() error {
+	if e := p.OutputPreValue(); e != nil {
+		return e
+	}
+	if _, e := p.write(JSON_LBRACKET); e != nil {
+		return NewTProtocolException(e)
+	}
+	p.dumpContext = append(p.dumpContext, int(_CONTEXT_IN_LIST_FIRST))
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) OutputListEnd() error {
+	if _, e := p.write(JSON_RBRACKET); e != nil {
+		return NewTProtocolException(e)
+	}
+	p.dumpContext = p.dumpContext[:len(p.dumpContext)-1]
+	if e := p.OutputPostValue(); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) OutputElemListBegin(elemType TType, size int) error {
+	if e := p.OutputListBegin(); e != nil {
+		return e
+	}
+	if e := p.WriteByte(int8(elemType)); e != nil {
+		return e
+	}
+	if e := p.WriteI64(int64(size)); e != nil {
+		return e
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) ParsePreValue() error {
+	if e := p.readNonSignificantWhitespace(); e != nil {
+		return NewTProtocolException(e)
+	}
+	cxt := _ParseContext(p.parseContextStack[len(p.parseContextStack)-1])
+	b, _ := p.reader.Peek(1)
+	switch cxt {
+	case _CONTEXT_IN_LIST:
+		if len(b) > 0 {
+			switch b[0] {
+			case JSON_RBRACKET[0]:
+				return nil
+			case JSON_COMMA[0]:
+				p.reader.ReadByte()
+				if e := p.readNonSignificantWhitespace(); e != nil {
+					return NewTProtocolException(e)
+				}
+				return nil
+			default:
+				e := fmt.Errorf("Expected \"]\" or \",\" in list context, but found \"%s\"", string(b))
+				return NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+		}
+		break
+	case _CONTEXT_IN_OBJECT_NEXT_KEY:
+		if len(b) > 0 {
+			switch b[0] {
+			case JSON_RBRACE[0]:
+				return nil
+			case JSON_COMMA[0]:
+				p.reader.ReadByte()
+				if e := p.readNonSignificantWhitespace(); e != nil {
+					return NewTProtocolException(e)
+				}
+				return nil
+			default:
+				e := fmt.Errorf("Expected \"}\" or \",\" in object context, but found \"%s\"", string(b))
+				return NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+		}
+		break
+	case _CONTEXT_IN_OBJECT_NEXT_VALUE:
+		if len(b) > 0 {
+			switch b[0] {
+			case JSON_COLON[0]:
+				p.reader.ReadByte()
+				if e := p.readNonSignificantWhitespace(); e != nil {
+					return NewTProtocolException(e)
+				}
+				return nil
+			default:
+				e := fmt.Errorf("Expected \":\" in object context, but found \"%s\"", string(b))
+				return NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+		}
+		break
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) ParsePostValue() error {
+	if e := p.readNonSignificantWhitespace(); e != nil {
+		return NewTProtocolException(e)
+	}
+	cxt := _ParseContext(p.parseContextStack[len(p.parseContextStack)-1])
+	switch cxt {
+	case _CONTEXT_IN_LIST_FIRST:
+		p.parseContextStack = p.parseContextStack[:len(p.parseContextStack)-1]
+		p.parseContextStack = append(p.parseContextStack, int(_CONTEXT_IN_LIST))
+		break
+	case _CONTEXT_IN_OBJECT_FIRST, _CONTEXT_IN_OBJECT_NEXT_KEY:
+		p.parseContextStack = p.parseContextStack[:len(p.parseContextStack)-1]
+		p.parseContextStack = append(p.parseContextStack, int(_CONTEXT_IN_OBJECT_NEXT_VALUE))
+		break
+	case _CONTEXT_IN_OBJECT_NEXT_VALUE:
+		p.parseContextStack = p.parseContextStack[:len(p.parseContextStack)-1]
+		p.parseContextStack = append(p.parseContextStack, int(_CONTEXT_IN_OBJECT_NEXT_KEY))
+		break
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) readNonSignificantWhitespace() error {
+	for {
+		b, _ := p.reader.Peek(1)
+		if len(b) < 1 {
+			return nil
+		}
+		switch b[0] {
+		case ' ', '\r', '\n', '\t':
+			p.reader.ReadByte()
+			continue
+		default:
+			break
+		}
+		break
+	}
+	return nil
+}
+
+func (p *TSimpleJSONProtocol) ParseStringBody() (string, error) {
+	line, err := p.reader.ReadString(JSON_QUOTE)
+	if err != nil {
+		return "", NewTProtocolException(err)
+	}
+	l := len(line)
+	// count number of escapes to see if we need to keep going
+	i := 1
+	for ; i < l; i++ {
+		if line[l-i-1] != '\\' {
+			break
+		}
+	}
+	if i&0x01 == 1 {
+		v, ok := jsonUnquote(string(JSON_QUOTE) + line)
+		if !ok {
+			return "", NewTProtocolException(err)
+		}
+		return v, nil
+	}
+	s, err := p.ParseQuotedStringBody()
+	if err != nil {
+		return "", NewTProtocolException(err)
+	}
+	str := string(JSON_QUOTE) + line + s
+	v, ok := jsonUnquote(str)
+	if !ok {
+		e := fmt.Errorf("Unable to parse as JSON string %s", str)
+		return "", NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	return v, nil
+}
+
+func (p *TSimpleJSONProtocol) ParseQuotedStringBody() (string, error) {
+	line, err := p.reader.ReadString(JSON_QUOTE)
+	if err != nil {
+		return "", NewTProtocolException(err)
+	}
+	l := len(line)
+	// count number of escapes to see if we need to keep going
+	i := 1
+	for ; i < l; i++ {
+		if line[l-i-1] != '\\' {
+			break
+		}
+	}
+	if i&0x01 == 1 {
+		return line, nil
+	}
+	s, err := p.ParseQuotedStringBody()
+	if err != nil {
+		return "", NewTProtocolException(err)
+	}
+	v := line + s
+	return v, nil
+}
+
+func (p *TSimpleJSONProtocol) ParseBase64EncodedBody() ([]byte, error) {
+	line, err := p.reader.ReadBytes(JSON_QUOTE)
+	if err != nil {
+		return line, NewTProtocolException(err)
+	}
+	line2 := line[0 : len(line)-1]
+	l := len(line2)
+	if (l % 4) != 0 {
+		pad := 4 - (l % 4)
+		fill := [...]byte{'=', '=', '='}
+		line2 = append(line2, fill[:pad]...)
+		l = len(line2)
+	}
+	output := make([]byte, base64.StdEncoding.DecodedLen(l))
+	n, err := base64.StdEncoding.Decode(output, line2)
+	return output[0:n], NewTProtocolException(err)
+}
+
+func (p *TSimpleJSONProtocol) ParseI64() (int64, bool, error) {
+	if err := p.ParsePreValue(); err != nil {
+		return 0, false, err
+	}
+	var value int64
+	var isnull bool
+	if p.safePeekContains(JSON_NULL) {
+		p.reader.Read(make([]byte, len(JSON_NULL)))
+		isnull = true
+	} else {
+		num, err := p.readNumeric()
+		isnull = (num == nil)
+		if !isnull {
+			value = num.Int64()
+		}
+		if err != nil {
+			return value, isnull, err
+		}
+	}
+	return value, isnull, p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) ParseF64() (float64, bool, error) {
+	if err := p.ParsePreValue(); err != nil {
+		return 0, false, err
+	}
+	var value float64
+	var isnull bool
+	if p.safePeekContains(JSON_NULL) {
+		p.reader.Read(make([]byte, len(JSON_NULL)))
+		isnull = true
+	} else {
+		num, err := p.readNumeric()
+		isnull = (num == nil)
+		if !isnull {
+			value = num.Float64()
+		}
+		if err != nil {
+			return value, isnull, err
+		}
+	}
+	return value, isnull, p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) ParseObjectStart() (bool, error) {
+	if err := p.ParsePreValue(); err != nil {
+		return false, err
+	}
+	var b []byte
+	b, err := p.reader.Peek(1)
+	if err != nil {
+		return false, err
+	}
+	if len(b) > 0 && b[0] == JSON_LBRACE[0] {
+		p.reader.ReadByte()
+		p.parseContextStack = append(p.parseContextStack, int(_CONTEXT_IN_OBJECT_FIRST))
+		return false, nil
+	} else if p.safePeekContains(JSON_NULL) {
+		return true, nil
+	}
+	e := fmt.Errorf("Expected '{' or null, but found '%s'", string(b))
+	return false, NewTProtocolExceptionWithType(INVALID_DATA, e)
+}
+
+func (p *TSimpleJSONProtocol) ParseObjectEnd() error {
+	if isNull, err := p.readIfNull(); isNull || err != nil {
+		return err
+	}
+	cxt := _ParseContext(p.parseContextStack[len(p.parseContextStack)-1])
+	if (cxt != _CONTEXT_IN_OBJECT_FIRST) && (cxt != _CONTEXT_IN_OBJECT_NEXT_KEY) {
+		e := fmt.Errorf("Expected to be in the Object Context, but not in Object Context (%d)", cxt)
+		return NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	line, err := p.reader.ReadString(JSON_RBRACE[0])
+	if err != nil {
+		return NewTProtocolException(err)
+	}
+	for _, char := range line {
+		switch char {
+		default:
+			e := fmt.Errorf("Expecting end of object \"}\", but found: \"%s\"", line)
+			return NewTProtocolExceptionWithType(INVALID_DATA, e)
+		case ' ', '\n', '\r', '\t', '}':
+			break
+		}
+	}
+	p.parseContextStack = p.parseContextStack[:len(p.parseContextStack)-1]
+	return p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) ParseListBegin() (isNull bool, err error) {
+	if e := p.ParsePreValue(); e != nil {
+		return false, e
+	}
+	var b []byte
+	b, err = p.reader.Peek(1)
+	if err != nil {
+		return false, err
+	}
+	if len(b) >= 1 && b[0] == JSON_LBRACKET[0] {
+		p.parseContextStack = append(p.parseContextStack, int(_CONTEXT_IN_LIST_FIRST))
+		p.reader.ReadByte()
+		isNull = false
+	} else if p.safePeekContains(JSON_NULL) {
+		isNull = true
+	} else {
+		err = fmt.Errorf("Expected \"null\" or \"[\", received %q", b)
+	}
+	return isNull, NewTProtocolExceptionWithType(INVALID_DATA, err)
+}
+
+func (p *TSimpleJSONProtocol) ParseElemListBegin() (elemType TType, size int, e error) {
+	if isNull, e := p.ParseListBegin(); isNull || e != nil {
+		return VOID, 0, e
+	}
+	bElemType, err := p.ReadByte()
+	elemType = TType(bElemType)
+	if err != nil {
+		return elemType, size, err
+	}
+	nSize, err2 := p.ReadI64()
+	size = int(nSize)
+	return elemType, size, err2
+}
+
+func (p *TSimpleJSONProtocol) ParseListEnd() error {
+	if isNull, err := p.readIfNull(); isNull || err != nil {
+		return err
+	}
+	cxt := _ParseContext(p.parseContextStack[len(p.parseContextStack)-1])
+	if cxt != _CONTEXT_IN_LIST {
+		e := fmt.Errorf("Expected to be in the List Context, but not in List Context (%d)", cxt)
+		return NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	line, err := p.reader.ReadString(JSON_RBRACKET[0])
+	if err != nil {
+		return NewTProtocolException(err)
+	}
+	for _, char := range line {
+		switch char {
+		default:
+			e := fmt.Errorf("Expecting end of list \"]\", but found: \"", line, "\"")
+			return NewTProtocolExceptionWithType(INVALID_DATA, e)
+		case ' ', '\n', '\r', '\t', rune(JSON_RBRACKET[0]):
+			break
+		}
+	}
+	p.parseContextStack = p.parseContextStack[:len(p.parseContextStack)-1]
+	if _ParseContext(p.parseContextStack[len(p.parseContextStack)-1]) == _CONTEXT_IN_TOPLEVEL {
+		return nil
+	}
+	return p.ParsePostValue()
+}
+
+func (p *TSimpleJSONProtocol) readSingleValue() (interface{}, TType, error) {
+	e := p.readNonSignificantWhitespace()
+	if e != nil {
+		return nil, VOID, NewTProtocolException(e)
+	}
+	b, e := p.reader.Peek(1)
+	if len(b) > 0 {
+		c := b[0]
+		switch c {
+		case JSON_NULL[0]:
+			buf := make([]byte, len(JSON_NULL))
+			_, e := p.reader.Read(buf)
+			if e != nil {
+				return nil, VOID, NewTProtocolException(e)
+			}
+			if string(JSON_NULL) != string(buf) {
+				e = mismatch(string(JSON_NULL), string(buf))
+				return nil, VOID, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			return nil, VOID, nil
+		case JSON_QUOTE:
+			p.reader.ReadByte()
+			v, e := p.ParseStringBody()
+			if e != nil {
+				return v, UTF8, NewTProtocolException(e)
+			}
+			if v == JSON_INFINITY {
+				return INFINITY, DOUBLE, nil
+			} else if v == JSON_NEGATIVE_INFINITY {
+				return NEGATIVE_INFINITY, DOUBLE, nil
+			} else if v == JSON_NAN {
+				return NAN, DOUBLE, nil
+			}
+			return v, UTF8, nil
+		case JSON_TRUE[0]:
+			buf := make([]byte, len(JSON_TRUE))
+			_, e := p.reader.Read(buf)
+			if e != nil {
+				return true, BOOL, NewTProtocolException(e)
+			}
+			if string(JSON_TRUE) != string(buf) {
+				e := mismatch(string(JSON_TRUE), string(buf))
+				return true, BOOL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			return true, BOOL, nil
+		case JSON_FALSE[0]:
+			buf := make([]byte, len(JSON_FALSE))
+			_, e := p.reader.Read(buf)
+			if e != nil {
+				return false, BOOL, NewTProtocolException(e)
+			}
+			if string(JSON_FALSE) != string(buf) {
+				e := mismatch(string(JSON_FALSE), string(buf))
+				return false, BOOL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			return false, BOOL, nil
+		case JSON_LBRACKET[0]:
+			_, e := p.reader.ReadByte()
+			return make([]interface{}, 0), LIST, NewTProtocolException(e)
+		case JSON_LBRACE[0]:
+			_, e := p.reader.ReadByte()
+			return make(map[string]interface{}), STRUCT, NewTProtocolException(e)
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'e', 'E', '.', '+', '-', JSON_INFINITY[0], JSON_NAN[0]:
+			// assume numeric
+			v, e := p.readNumeric()
+			return v, DOUBLE, e
+		default:
+			e := fmt.Errorf("Expected element in list but found '%s' while parsing JSON.", string(c))
+			return nil, VOID, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	}
+	e = fmt.Errorf("Cannot read a single element while parsing JSON.")
+	return nil, VOID, NewTProtocolExceptionWithType(INVALID_DATA, e)
+
+}
+
+func (p *TSimpleJSONProtocol) readIfNull() (bool, error) {
+	cont := true
+	for cont {
+		b, _ := p.reader.Peek(1)
+		if len(b) < 1 {
+			return false, nil
+		}
+		switch b[0] {
+		default:
+			return false, nil
+		case JSON_NULL[0]:
+			cont = false
+			break
+		case ' ', '\n', '\r', '\t':
+			p.reader.ReadByte()
+			break
+		}
+	}
+	if p.safePeekContains(JSON_NULL) {
+		p.reader.Read(make([]byte, len(JSON_NULL)))
+		return true, nil
+	}
+	return false, nil
+}
+
+func (p *TSimpleJSONProtocol) readQuoteIfNext() {
+	b, _ := p.reader.Peek(1)
+	if len(b) > 0 && b[0] == JSON_QUOTE {
+		p.reader.ReadByte()
+	}
+}
+
+func (p *TSimpleJSONProtocol) readNumeric() (Numeric, error) {
+	isNull, err := p.readIfNull()
+	if isNull || err != nil {
+		return NUMERIC_NULL, err
+	}
+	hasDecimalPoint := false
+	nextCanBeSign := true
+	hasE := false
+	MAX_LEN := 40
+	buf := bytes.NewBuffer(make([]byte, 0, MAX_LEN))
+	continueFor := true
+	inQuotes := false
+	for continueFor {
+		c, err := p.reader.ReadByte()
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			return NUMERIC_NULL, NewTProtocolException(err)
+		}
+		switch c {
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			buf.WriteByte(c)
+			nextCanBeSign = false
+		case '.':
+			if hasDecimalPoint {
+				e := fmt.Errorf("Unable to parse number with multiple decimal points '%s.'", buf.String())
+				return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			if hasE {
+				e := fmt.Errorf("Unable to parse number with decimal points in the exponent '%s.'", buf.String())
+				return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			buf.WriteByte(c)
+			hasDecimalPoint, nextCanBeSign = true, false
+		case 'e', 'E':
+			if hasE {
+				e := fmt.Errorf("Unable to parse number with multiple exponents '%s%c'", buf.String(), c)
+				return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			buf.WriteByte(c)
+			hasE, nextCanBeSign = true, true
+		case '-', '+':
+			if !nextCanBeSign {
+				e := fmt.Errorf("Negative sign within number")
+				return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+			buf.WriteByte(c)
+			nextCanBeSign = false
+		case ' ', 0, '\t', '\n', '\r', JSON_RBRACE[0], JSON_RBRACKET[0], JSON_COMMA[0], JSON_COLON[0]:
+			p.reader.UnreadByte()
+			continueFor = false
+		case JSON_NAN[0]:
+			if buf.Len() == 0 {
+				buffer := make([]byte, len(JSON_NAN))
+				buffer[0] = c
+				_, e := p.reader.Read(buffer[1:])
+				if e != nil {
+					return NUMERIC_NULL, NewTProtocolException(e)
+				}
+				if JSON_NAN != string(buffer) {
+					e := mismatch(JSON_NAN, string(buffer))
+					return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+				}
+				if inQuotes {
+					p.readQuoteIfNext()
+				}
+				return NAN, nil
+			} else {
+				e := fmt.Errorf("Unable to parse number starting with character '%c'", c)
+				return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+		case JSON_INFINITY[0]:
+			if buf.Len() == 0 || (buf.Len() == 1 && buf.Bytes()[0] == '+') {
+				buffer := make([]byte, len(JSON_INFINITY))
+				buffer[0] = c
+				_, e := p.reader.Read(buffer[1:])
+				if e != nil {
+					return NUMERIC_NULL, NewTProtocolException(e)
+				}
+				if JSON_INFINITY != string(buffer) {
+					e := mismatch(JSON_INFINITY, string(buffer))
+					return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+				}
+				if inQuotes {
+					p.readQuoteIfNext()
+				}
+				return INFINITY, nil
+			} else if buf.Len() == 1 && buf.Bytes()[0] == JSON_NEGATIVE_INFINITY[0] {
+				buffer := make([]byte, len(JSON_NEGATIVE_INFINITY))
+				buffer[0] = JSON_NEGATIVE_INFINITY[0]
+				buffer[1] = c
+				_, e := p.reader.Read(buffer[2:])
+				if e != nil {
+					return NUMERIC_NULL, NewTProtocolException(e)
+				}
+				if JSON_NEGATIVE_INFINITY != string(buffer) {
+					e := mismatch(JSON_NEGATIVE_INFINITY, string(buffer))
+					return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+				}
+				if inQuotes {
+					p.readQuoteIfNext()
+				}
+				return NEGATIVE_INFINITY, nil
+			} else {
+				e := fmt.Errorf("Unable to parse number starting with character '%c' due to existing buffer %s", c, buf.String())
+				return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+			}
+		case JSON_QUOTE:
+			if !inQuotes {
+				inQuotes = true
+			} else {
+				break
+			}
+		default:
+			e := fmt.Errorf("Unable to parse number starting with character '%c'", c)
+			return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+		}
+	}
+	if buf.Len() == 0 {
+		e := fmt.Errorf("Unable to parse number from empty string ''")
+		return NUMERIC_NULL, NewTProtocolExceptionWithType(INVALID_DATA, e)
+	}
+	return NewNumericFromJSONString(buf.String(), false), nil
+}
+
+// Safely peeks into the buffer, reading only what is necessary
+func (p *TSimpleJSONProtocol) safePeekContains(b []byte) bool {
+	for i := 0; i < len(b); i++ {
+		a, _ := p.reader.Peek(i + 1)
+		if len(a) == 0 || a[i] != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// Reset the context stack to its initial state.
+func (p *TSimpleJSONProtocol) resetContextStack() {
+	p.parseContextStack = []int{int(_CONTEXT_IN_TOPLEVEL)}
+	p.dumpContext = []int{int(_CONTEXT_IN_TOPLEVEL)}
+}
+
+func (p *TSimpleJSONProtocol) write(b []byte) (int, error) {
+	n, err := p.writer.Write(b)
+	if err != nil {
+		p.writer.Reset(p.trans) // THRIFT-3735
+	}
+	return n, err
+}

vendor/github.com/apache/thrift/lib/go/thrift/simple_server.go

@@ -0,0 +1,196 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"log"
+	"runtime/debug"
+	"sync"
+)
+
+// Simple, non-concurrent server for testing.
+type TSimpleServer struct {
+	quit chan struct{}
+
+	processorFactory       TProcessorFactory
+	serverTransport        TServerTransport
+	inputTransportFactory  TTransportFactory
+	outputTransportFactory TTransportFactory
+	inputProtocolFactory   TProtocolFactory
+	outputProtocolFactory  TProtocolFactory
+}
+
+func NewTSimpleServer2(processor TProcessor, serverTransport TServerTransport) *TSimpleServer {
+	return NewTSimpleServerFactory2(NewTProcessorFactory(processor), serverTransport)
+}
+
+func NewTSimpleServer4(processor TProcessor, serverTransport TServerTransport, transportFactory TTransportFactory, protocolFactory TProtocolFactory) *TSimpleServer {
+	return NewTSimpleServerFactory4(NewTProcessorFactory(processor),
+		serverTransport,
+		transportFactory,
+		protocolFactory,
+	)
+}
+
+func NewTSimpleServer6(processor TProcessor, serverTransport TServerTransport, inputTransportFactory TTransportFactory, outputTransportFactory TTransportFactory, inputProtocolFactory TProtocolFactory, outputProtocolFactory TProtocolFactory) *TSimpleServer {
+	return NewTSimpleServerFactory6(NewTProcessorFactory(processor),
+		serverTransport,
+		inputTransportFactory,
+		outputTransportFactory,
+		inputProtocolFactory,
+		outputProtocolFactory,
+	)
+}
+
+func NewTSimpleServerFactory2(processorFactory TProcessorFactory, serverTransport TServerTransport) *TSimpleServer {
+	return NewTSimpleServerFactory6(processorFactory,
+		serverTransport,
+		NewTTransportFactory(),
+		NewTTransportFactory(),
+		NewTBinaryProtocolFactoryDefault(),
+		NewTBinaryProtocolFactoryDefault(),
+	)
+}
+
+func NewTSimpleServerFactory4(processorFactory TProcessorFactory, serverTransport TServerTransport, transportFactory TTransportFactory, protocolFactory TProtocolFactory) *TSimpleServer {
+	return NewTSimpleServerFactory6(processorFactory,
+		serverTransport,
+		transportFactory,
+		transportFactory,
+		protocolFactory,
+		protocolFactory,
+	)
+}
+
+func NewTSimpleServerFactory6(processorFactory TProcessorFactory, serverTransport TServerTransport, inputTransportFactory TTransportFactory, outputTransportFactory TTransportFactory, inputProtocolFactory TProtocolFactory, outputProtocolFactory TProtocolFactory) *TSimpleServer {
+	return &TSimpleServer{
+		processorFactory:       processorFactory,
+		serverTransport:        serverTransport,
+		inputTransportFactory:  inputTransportFactory,
+		outputTransportFactory: outputTransportFactory,
+		inputProtocolFactory:   inputProtocolFactory,
+		outputProtocolFactory:  outputProtocolFactory,
+		quit: make(chan struct{}, 1),
+	}
+}
+
+func (p *TSimpleServer) ProcessorFactory() TProcessorFactory {
+	return p.processorFactory
+}
+
+func (p *TSimpleServer) ServerTransport() TServerTransport {
+	return p.serverTransport
+}
+
+func (p *TSimpleServer) InputTransportFactory() TTransportFactory {
+	return p.inputTransportFactory
+}
+
+func (p *TSimpleServer) OutputTransportFactory() TTransportFactory {
+	return p.outputTransportFactory
+}
+
+func (p *TSimpleServer) InputProtocolFactory() TProtocolFactory {
+	return p.inputProtocolFactory
+}
+
+func (p *TSimpleServer) OutputProtocolFactory() TProtocolFactory {
+	return p.outputProtocolFactory
+}
+
+func (p *TSimpleServer) Listen() error {
+	return p.serverTransport.Listen()
+}
+
+func (p *TSimpleServer) AcceptLoop() error {
+	for {
+		client, err := p.serverTransport.Accept()
+		if err != nil {
+			select {
+			case <-p.quit:
+				return nil
+			default:
+			}
+			return err
+		}
+		if client != nil {
+			go func() {
+				if err := p.processRequests(client); err != nil {
+					log.Println("error processing request:", err)
+				}
+			}()
+		}
+	}
+}
+
+func (p *TSimpleServer) Serve() error {
+	err := p.Listen()
+	if err != nil {
+		return err
+	}
+	p.AcceptLoop()
+	return nil
+}
+
+var once sync.Once
+
+func (p *TSimpleServer) Stop() error {
+	q := func() {
+		p.quit <- struct{}{}
+		p.serverTransport.Interrupt()
+	}
+	once.Do(q)
+	return nil
+}
+
+func (p *TSimpleServer) processRequests(client TTransport) error {
+	processor := p.processorFactory.GetProcessor(client)
+	inputTransport := p.inputTransportFactory.GetTransport(client)
+	outputTransport := p.outputTransportFactory.GetTransport(client)
+	inputProtocol := p.inputProtocolFactory.GetProtocol(inputTransport)
+	outputProtocol := p.outputProtocolFactory.GetProtocol(outputTransport)
+	defer func() {
+		if e := recover(); e != nil {
+			log.Printf("panic in processor: %s: %s", e, debug.Stack())
+		}
+	}()
+	if inputTransport != nil {
+		defer inputTransport.Close()
+	}
+	if outputTransport != nil {
+		defer outputTransport.Close()
+	}
+	for {
+		ok, err := processor.Process(inputProtocol, outputProtocol)
+		if err, ok := err.(TTransportException); ok && err.TypeId() == END_OF_FILE {
+			return nil
+		} else if err != nil {
+			log.Printf("error processing request: %s", err)
+			return err
+		}
+		if err, ok := err.(TApplicationException); ok && err.TypeId() == UNKNOWN_METHOD {
+			continue
+		}
+ 		if !ok {
+			break
+		}
+	}
+	return nil
+}

vendor/github.com/apache/thrift/lib/go/thrift/socket.go

@@ -0,0 +1,166 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"net"
+	"time"
+)
+
+type TSocket struct {
+	conn    net.Conn
+	addr    net.Addr
+	timeout time.Duration
+}
+
+// NewTSocket creates a net.Conn-backed TTransport, given a host and port
+//
+// Example:
+// 	trans, err := thrift.NewTSocket("localhost:9090")
+func NewTSocket(hostPort string) (*TSocket, error) {
+	return NewTSocketTimeout(hostPort, 0)
+}
+
+// NewTSocketTimeout creates a net.Conn-backed TTransport, given a host and port
+// it also accepts a timeout as a time.Duration
+func NewTSocketTimeout(hostPort string, timeout time.Duration) (*TSocket, error) {
+	//conn, err := net.DialTimeout(network, address, timeout)
+	addr, err := net.ResolveTCPAddr("tcp", hostPort)
+	if err != nil {
+		return nil, err
+	}
+	return NewTSocketFromAddrTimeout(addr, timeout), nil
+}
+
+// Creates a TSocket from a net.Addr
+func NewTSocketFromAddrTimeout(addr net.Addr, timeout time.Duration) *TSocket {
+	return &TSocket{addr: addr, timeout: timeout}
+}
+
+// Creates a TSocket from an existing net.Conn
+func NewTSocketFromConnTimeout(conn net.Conn, timeout time.Duration) *TSocket {
+	return &TSocket{conn: conn, addr: conn.RemoteAddr(), timeout: timeout}
+}
+
+// Sets the socket timeout
+func (p *TSocket) SetTimeout(timeout time.Duration) error {
+	p.timeout = timeout
+	return nil
+}
+
+func (p *TSocket) pushDeadline(read, write bool) {
+	var t time.Time
+	if p.timeout > 0 {
+		t = time.Now().Add(time.Duration(p.timeout))
+	}
+	if read && write {
+		p.conn.SetDeadline(t)
+	} else if read {
+		p.conn.SetReadDeadline(t)
+	} else if write {
+		p.conn.SetWriteDeadline(t)
+	}
+}
+
+// Connects the socket, creating a new socket object if necessary.
+func (p *TSocket) Open() error {
+	if p.IsOpen() {
+		return NewTTransportException(ALREADY_OPEN, "Socket already connected.")
+	}
+	if p.addr == nil {
+		return NewTTransportException(NOT_OPEN, "Cannot open nil address.")
+	}
+	if len(p.addr.Network()) == 0 {
+		return NewTTransportException(NOT_OPEN, "Cannot open bad network name.")
+	}
+	if len(p.addr.String()) == 0 {
+		return NewTTransportException(NOT_OPEN, "Cannot open bad address.")
+	}
+	var err error
+	if p.conn, err = net.DialTimeout(p.addr.Network(), p.addr.String(), p.timeout); err != nil {
+		return NewTTransportException(NOT_OPEN, err.Error())
+	}
+	return nil
+}
+
+// Retrieve the underlying net.Conn
+func (p *TSocket) Conn() net.Conn {
+	return p.conn
+}
+
+// Returns true if the connection is open
+func (p *TSocket) IsOpen() bool {
+	if p.conn == nil {
+		return false
+	}
+	return true
+}
+
+// Closes the socket.
+func (p *TSocket) Close() error {
+	// Close the socket
+	if p.conn != nil {
+		err := p.conn.Close()
+		if err != nil {
+			return err
+		}
+		p.conn = nil
+	}
+	return nil
+}
+
+//Returns the remote address of the socket.
+func (p *TSocket) Addr() net.Addr {
+	return p.addr
+}
+
+func (p *TSocket) Read(buf []byte) (int, error) {
+	if !p.IsOpen() {
+		return 0, NewTTransportException(NOT_OPEN, "Connection not open")
+	}
+	p.pushDeadline(true, false)
+	n, err := p.conn.Read(buf)
+	return n, NewTTransportExceptionFromError(err)
+}
+
+func (p *TSocket) Write(buf []byte) (int, error) {
+	if !p.IsOpen() {
+		return 0, NewTTransportException(NOT_OPEN, "Connection not open")
+	}
+	p.pushDeadline(false, true)
+	return p.conn.Write(buf)
+}
+
+func (p *TSocket) Flush() error {
+	return nil
+}
+
+func (p *TSocket) Interrupt() error {
+	if !p.IsOpen() {
+		return nil
+	}
+	return p.conn.Close()
+}
+
+func (p *TSocket) RemainingBytes() (num_bytes uint64) {
+	const maxSize = ^uint64(0)
+	return maxSize  // the thruth is, we just don't know unless framed is used
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/ssl_server_socket.go

@@ -0,0 +1,109 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"net"
+	"time"
+	"crypto/tls"
+)
+
+type TSSLServerSocket struct {
+	listener      net.Listener
+	addr          net.Addr
+	clientTimeout time.Duration
+	interrupted   bool
+	cfg           *tls.Config
+}
+
+func NewTSSLServerSocket(listenAddr string, cfg *tls.Config) (*TSSLServerSocket, error) {
+	return NewTSSLServerSocketTimeout(listenAddr, cfg, 0)
+}
+
+func NewTSSLServerSocketTimeout(listenAddr string, cfg *tls.Config, clientTimeout time.Duration) (*TSSLServerSocket, error) {
+	addr, err := net.ResolveTCPAddr("tcp", listenAddr)
+	if err != nil {
+		return nil, err
+	}
+	return &TSSLServerSocket{addr: addr, clientTimeout: clientTimeout, cfg: cfg}, nil
+}
+
+func (p *TSSLServerSocket) Listen() error {
+	if p.IsListening() {
+		return nil
+	}
+	l, err := tls.Listen(p.addr.Network(), p.addr.String(), p.cfg)
+	if err != nil {
+		return err
+	}
+	p.listener = l
+	return nil
+}
+
+func (p *TSSLServerSocket) Accept() (TTransport, error) {
+	if p.interrupted {
+		return nil, errTransportInterrupted
+	}
+	if p.listener == nil {
+		return nil, NewTTransportException(NOT_OPEN, "No underlying server socket")
+	}
+	conn, err := p.listener.Accept()
+	if err != nil {
+		return nil, NewTTransportExceptionFromError(err)
+	}
+	return NewTSSLSocketFromConnTimeout(conn, p.cfg, p.clientTimeout), nil
+}
+
+// Checks whether the socket is listening.
+func (p *TSSLServerSocket) IsListening() bool {
+	return p.listener != nil
+}
+
+// Connects the socket, creating a new socket object if necessary.
+func (p *TSSLServerSocket) Open() error {
+	if p.IsListening() {
+		return NewTTransportException(ALREADY_OPEN, "Server socket already open")
+	}
+	if l, err := tls.Listen(p.addr.Network(), p.addr.String(), p.cfg); err != nil {
+		return err
+	} else {
+		p.listener = l
+	}
+	return nil
+}
+
+func (p *TSSLServerSocket) Addr() net.Addr {
+	return p.addr
+}
+
+func (p *TSSLServerSocket) Close() error {
+	defer func() {
+		p.listener = nil
+	}()
+	if p.IsListening() {
+		return p.listener.Close()
+	}
+	return nil
+}
+
+func (p *TSSLServerSocket) Interrupt() error {
+	p.interrupted = true
+	return nil
+}

vendor/github.com/apache/thrift/lib/go/thrift/ssl_socket.go

@@ -0,0 +1,171 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"crypto/tls"
+	"net"
+	"time"
+)
+
+type TSSLSocket struct {
+	conn net.Conn
+	// hostPort contains host:port (e.g. "asdf.com:12345"). The field is
+	// only valid if addr is nil.
+	hostPort string
+	// addr is nil when hostPort is not "", and is only used when the
+	// TSSLSocket is constructed from a net.Addr.
+	addr    net.Addr
+	timeout time.Duration
+	cfg     *tls.Config
+}
+
+// NewTSSLSocket creates a net.Conn-backed TTransport, given a host and port and tls Configuration
+//
+// Example:
+// 	trans, err := thrift.NewTSSLSocket("localhost:9090", nil)
+func NewTSSLSocket(hostPort string, cfg *tls.Config) (*TSSLSocket, error) {
+	return NewTSSLSocketTimeout(hostPort, cfg, 0)
+}
+
+// NewTSSLSocketTimeout creates a net.Conn-backed TTransport, given a host and port
+// it also accepts a tls Configuration and a timeout as a time.Duration
+func NewTSSLSocketTimeout(hostPort string, cfg *tls.Config, timeout time.Duration) (*TSSLSocket, error) {
+	return &TSSLSocket{hostPort: hostPort, timeout: timeout, cfg: cfg}, nil
+}
+
+// Creates a TSSLSocket from a net.Addr
+func NewTSSLSocketFromAddrTimeout(addr net.Addr, cfg *tls.Config, timeout time.Duration) *TSSLSocket {
+	return &TSSLSocket{addr: addr, timeout: timeout, cfg: cfg}
+}
+
+// Creates a TSSLSocket from an existing net.Conn
+func NewTSSLSocketFromConnTimeout(conn net.Conn, cfg *tls.Config, timeout time.Duration) *TSSLSocket {
+	return &TSSLSocket{conn: conn, addr: conn.RemoteAddr(), timeout: timeout, cfg: cfg}
+}
+
+// Sets the socket timeout
+func (p *TSSLSocket) SetTimeout(timeout time.Duration) error {
+	p.timeout = timeout
+	return nil
+}
+
+func (p *TSSLSocket) pushDeadline(read, write bool) {
+	var t time.Time
+	if p.timeout > 0 {
+		t = time.Now().Add(time.Duration(p.timeout))
+	}
+	if read && write {
+		p.conn.SetDeadline(t)
+	} else if read {
+		p.conn.SetReadDeadline(t)
+	} else if write {
+		p.conn.SetWriteDeadline(t)
+	}
+}
+
+// Connects the socket, creating a new socket object if necessary.
+func (p *TSSLSocket) Open() error {
+	var err error
+	// If we have a hostname, we need to pass the hostname to tls.Dial for
+	// certificate hostname checks.
+	if p.hostPort != "" {
+		if p.conn, err = tls.Dial("tcp", p.hostPort, p.cfg); err != nil {
+			return NewTTransportException(NOT_OPEN, err.Error())
+		}
+	} else {
+		if p.IsOpen() {
+			return NewTTransportException(ALREADY_OPEN, "Socket already connected.")
+		}
+		if p.addr == nil {
+			return NewTTransportException(NOT_OPEN, "Cannot open nil address.")
+		}
+		if len(p.addr.Network()) == 0 {
+			return NewTTransportException(NOT_OPEN, "Cannot open bad network name.")
+		}
+		if len(p.addr.String()) == 0 {
+			return NewTTransportException(NOT_OPEN, "Cannot open bad address.")
+		}
+		if p.conn, err = tls.Dial(p.addr.Network(), p.addr.String(), p.cfg); err != nil {
+			return NewTTransportException(NOT_OPEN, err.Error())
+		}
+	}
+	return nil
+}
+
+// Retrieve the underlying net.Conn
+func (p *TSSLSocket) Conn() net.Conn {
+	return p.conn
+}
+
+// Returns true if the connection is open
+func (p *TSSLSocket) IsOpen() bool {
+	if p.conn == nil {
+		return false
+	}
+	return true
+}
+
+// Closes the socket.
+func (p *TSSLSocket) Close() error {
+	// Close the socket
+	if p.conn != nil {
+		err := p.conn.Close()
+		if err != nil {
+			return err
+		}
+		p.conn = nil
+	}
+	return nil
+}
+
+func (p *TSSLSocket) Read(buf []byte) (int, error) {
+	if !p.IsOpen() {
+		return 0, NewTTransportException(NOT_OPEN, "Connection not open")
+	}
+	p.pushDeadline(true, false)
+	n, err := p.conn.Read(buf)
+	return n, NewTTransportExceptionFromError(err)
+}
+
+func (p *TSSLSocket) Write(buf []byte) (int, error) {
+	if !p.IsOpen() {
+		return 0, NewTTransportException(NOT_OPEN, "Connection not open")
+	}
+	p.pushDeadline(false, true)
+	return p.conn.Write(buf)
+}
+
+func (p *TSSLSocket) Flush() error {
+	return nil
+}
+
+func (p *TSSLSocket) Interrupt() error {
+	if !p.IsOpen() {
+		return nil
+	}
+	return p.conn.Close()
+}
+
+func (p *TSSLSocket) RemainingBytes() (num_bytes uint64) {
+	const maxSize = ^uint64(0)
+	return maxSize  // the thruth is, we just don't know unless framed is used
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/transport.go

@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"errors"
+	"io"
+)
+
+var errTransportInterrupted = errors.New("Transport Interrupted")
+
+type Flusher interface {
+	Flush() (err error)
+}
+
+type ReadSizeProvider interface {
+	RemainingBytes() (num_bytes uint64)
+}
+
+
+// Encapsulates the I/O layer
+type TTransport interface {
+	io.ReadWriteCloser
+	Flusher
+	ReadSizeProvider
+
+	// Opens the transport for communication
+	Open() error
+
+	// Returns true if the transport is open
+	IsOpen() bool
+}
+
+type stringWriter interface {
+	WriteString(s string) (n int, err error)
+}
+
+
+// This is "enchanced" transport with extra capabilities. You need to use one of these
+// to construct protocol.
+// Notably, TSocket does not implement this interface, and it is always a mistake to use
+// TSocket directly in protocol.
+type TRichTransport interface {
+	io.ReadWriter
+	io.ByteReader
+	io.ByteWriter
+	stringWriter
+	Flusher
+	ReadSizeProvider
+}
+

vendor/github.com/apache/thrift/lib/go/thrift/transport_exception.go

@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"errors"
+	"io"
+)
+
+type timeoutable interface {
+	Timeout() bool
+}
+
+// Thrift Transport exception
+type TTransportException interface {
+	TException
+	TypeId() int
+	Err() error
+}
+
+const (
+	UNKNOWN_TRANSPORT_EXCEPTION = 0
+	NOT_OPEN                    = 1
+	ALREADY_OPEN                = 2
+	TIMED_OUT                   = 3
+	END_OF_FILE                 = 4
+)
+
+type tTransportException struct {
+	typeId int
+	err    error
+}
+
+func (p *tTransportException) TypeId() int {
+	return p.typeId
+}
+
+func (p *tTransportException) Error() string {
+	return p.err.Error()
+}
+
+func (p *tTransportException) Err() error {
+	return p.err
+}
+
+func NewTTransportException(t int, e string) TTransportException {
+	return &tTransportException{typeId: t, err: errors.New(e)}
+}
+
+func NewTTransportExceptionFromError(e error) TTransportException {
+	if e == nil {
+		return nil
+	}
+
+	if t, ok := e.(TTransportException); ok {
+		return t
+	}
+
+	switch v := e.(type) {
+	case TTransportException:
+		return v
+	case timeoutable:
+		if v.Timeout() {
+			return &tTransportException{typeId: TIMED_OUT, err: e}
+		}
+	}
+
+	if e == io.EOF {
+		return &tTransportException{typeId: END_OF_FILE, err: e}
+	}
+
+	return &tTransportException{typeId: UNKNOWN_TRANSPORT_EXCEPTION, err: e}
+}

vendor/github.com/apache/thrift/lib/go/thrift/transport_factory.go

@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// Factory class used to create wrapped instance of Transports.
+// This is used primarily in servers, which get Transports from
+// a ServerTransport and then may want to mutate them (i.e. create
+// a BufferedTransport from the underlying base transport)
+type TTransportFactory interface {
+	GetTransport(trans TTransport) TTransport
+}
+
+type tTransportFactory struct{}
+
+// Return a wrapped instance of the base Transport.
+func (p *tTransportFactory) GetTransport(trans TTransport) TTransport {
+	return trans
+}
+
+func NewTTransportFactory() TTransportFactory {
+	return &tTransportFactory{}
+}

vendor/github.com/apache/thrift/lib/go/thrift/type.go

@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+// Type constants in the Thrift protocol
+type TType byte
+
+const (
+	STOP   = 0
+	VOID   = 1
+	BOOL   = 2
+	BYTE   = 3
+	I08    = 3
+	DOUBLE = 4
+	I16    = 6
+	I32    = 8
+	I64    = 10
+	STRING = 11
+	UTF7   = 11
+	STRUCT = 12
+	MAP    = 13
+	SET    = 14
+	LIST   = 15
+	UTF8   = 16
+	UTF16  = 17
+	//BINARY = 18   wrong and unusued
+)
+
+var typeNames = map[int]string{
+	STOP:   "STOP",
+	VOID:   "VOID",
+	BOOL:   "BOOL",
+	BYTE:   "BYTE",
+	DOUBLE: "DOUBLE",
+	I16:    "I16",
+	I32:    "I32",
+	I64:    "I64",
+	STRING: "STRING",
+	STRUCT: "STRUCT",
+	MAP:    "MAP",
+	SET:    "SET",
+	LIST:   "LIST",
+	UTF8:   "UTF8",
+	UTF16:  "UTF16",
+}
+
+func (p TType) String() string {
+	if s, ok := typeNames[int(p)]; ok {
+		return s
+	}
+	return "Unknown"
+}

vendor/github.com/apache/thrift/lib/go/thrift/zlib_transport.go

@@ -0,0 +1,117 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+ */
+
+package thrift
+
+import (
+	"compress/zlib"
+	"io"
+	"log"
+)
+
+// TZlibTransportFactory is a factory for TZlibTransport instances
+type TZlibTransportFactory struct {
+	level int
+}
+
+// TZlibTransport is a TTransport implementation that makes use of zlib compression.
+type TZlibTransport struct {
+	reader    io.ReadCloser
+	transport TTransport
+	writer    *zlib.Writer
+}
+
+// GetTransport constructs a new instance of NewTZlibTransport
+func (p *TZlibTransportFactory) GetTransport(trans TTransport) TTransport {
+	t, _ := NewTZlibTransport(trans, p.level)
+	return t
+}
+
+// NewTZlibTransportFactory constructs a new instance of NewTZlibTransportFactory
+func NewTZlibTransportFactory(level int) *TZlibTransportFactory {
+	return &TZlibTransportFactory{level: level}
+}
+
+// NewTZlibTransport constructs a new instance of TZlibTransport
+func NewTZlibTransport(trans TTransport, level int) (*TZlibTransport, error) {
+	w, err := zlib.NewWriterLevel(trans, level)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	return &TZlibTransport{
+		writer:    w,
+		transport: trans,
+	}, nil
+}
+
+// Close closes the reader and writer (flushing any unwritten data) and closes
+// the underlying transport.
+func (z *TZlibTransport) Close() error {
+	if z.reader != nil {
+		if err := z.reader.Close(); err != nil {
+			return err
+		}
+	}
+	if err := z.writer.Close(); err != nil {
+		return err
+	}
+	return z.transport.Close()
+}
+
+// Flush flushes the writer and its underlying transport.
+func (z *TZlibTransport) Flush() error {
+	if err := z.writer.Flush(); err != nil {
+		return err
+	}
+	return z.transport.Flush()
+}
+
+// IsOpen returns true if the transport is open
+func (z *TZlibTransport) IsOpen() bool {
+	return z.transport.IsOpen()
+}
+
+// Open opens the transport for communication
+func (z *TZlibTransport) Open() error {
+	return z.transport.Open()
+}
+
+func (z *TZlibTransport) Read(p []byte) (int, error) {
+	if z.reader == nil {
+		r, err := zlib.NewReader(z.transport)
+		if err != nil {
+			return 0, NewTTransportExceptionFromError(err)
+		}
+		z.reader = r
+	}
+
+	return z.reader.Read(p)
+}
+
+// RemainingBytes returns the size in bytes of the data that is still to be
+// read.
+func (z *TZlibTransport) RemainingBytes() uint64 {
+	return z.transport.RemainingBytes()
+}
+
+func (z *TZlibTransport) Write(p []byte) (int, error) {
+	return z.writer.Write(p)
+}

vendor/github.com/opentracing/opentracing-go/CHANGELOG.md

@@ -0,0 +1,14 @@
+Changes by Version
+==================
+
+1.1.0 (unreleased)
+-------------------
+
+- Deprecate InitGlobalTracer() in favor of SetGlobalTracer()
+
+
+1.0.0 (2016-09-26)
+-------------------
+
+- This release implements OpenTracing Specification 1.0 (http://opentracing.io/spec)
+

vendor/github.com/opentracing/opentracing-go/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 The OpenTracing Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/opentracing/opentracing-go/Makefile

@@ -0,0 +1,32 @@
+PACKAGES := . ./mocktracer/... ./ext/...
+
+.DEFAULT_GOAL := test-and-lint
+
+.PHONE: test-and-lint
+
+test-and-lint: test lint
+
+.PHONY: test
+test:
+	go test -v -cover ./...
+
+cover:
+	@rm -rf cover-all.out
+	$(foreach pkg, $(PACKAGES), $(MAKE) cover-pkg PKG=$(pkg) || true;)
+	@grep mode: cover.out > coverage.out
+	@cat cover-all.out >> coverage.out
+	go tool cover -html=coverage.out -o cover.html
+	@rm -rf cover.out cover-all.out coverage.out
+
+cover-pkg:
+	go test -coverprofile cover.out $(PKG)
+	@grep -v mode: cover.out >> cover-all.out
+
+.PHONY: lint
+lint:
+	go fmt ./...
+	golint ./...
+	@# Run again with magic to exit non-zero if golint outputs anything.
+	@! (golint ./... | read dummy)
+	go vet ./...
+

vendor/github.com/opentracing/opentracing-go/README.md

@@ -0,0 +1,163 @@
+[![Gitter chat](http://img.shields.io/badge/gitter-join%20chat%20%E2%86%92-brightgreen.svg)](https://gitter.im/opentracing/public) [![Build Status](https://travis-ci.org/opentracing/opentracing-go.svg?branch=master)](https://travis-ci.org/opentracing/opentracing-go) [![GoDoc](https://godoc.org/github.com/opentracing/opentracing-go?status.svg)](http://godoc.org/github.com/opentracing/opentracing-go)
+[![Sourcegraph Badge](https://sourcegraph.com/github.com/opentracing/opentracing-go/-/badge.svg)](https://sourcegraph.com/github.com/opentracing/opentracing-go?badge)
+
+# OpenTracing API for Go
+
+This package is a Go platform API for OpenTracing.
+
+## Required Reading
+
+In order to understand the Go platform API, one must first be familiar with the
+[OpenTracing project](http://opentracing.io) and
+[terminology](http://opentracing.io/documentation/pages/spec.html) more specifically.
+
+## API overview for those adding instrumentation
+
+Everyday consumers of this `opentracing` package really only need to worry
+about a couple of key abstractions: the `StartSpan` function, the `Span`
+interface, and binding a `Tracer` at `main()`-time. Here are code snippets
+demonstrating some important use cases.
+
+#### Singleton initialization
+
+The simplest starting point is `./default_tracer.go`. As early as possible, call
+
+```go
+    import "github.com/opentracing/opentracing-go"
+    import ".../some_tracing_impl"
+
+    func main() {
+        opentracing.InitGlobalTracer(
+            // tracing impl specific:
+            some_tracing_impl.New(...),
+        )
+        ...
+    }
+```
+
+##### Non-Singleton initialization
+
+If you prefer direct control to singletons, manage ownership of the
+`opentracing.Tracer` implementation explicitly.
+
+#### Creating a Span given an existing Go `context.Context`
+
+If you use `context.Context` in your application, OpenTracing's Go library will
+happily rely on it for `Span` propagation. To start a new (blocking child)
+`Span`, you can use `StartSpanFromContext`.
+
+```go
+    func xyz(ctx context.Context, ...) {
+        ...
+        span, ctx := opentracing.StartSpanFromContext(ctx, "operation_name")
+        defer span.Finish()
+        span.LogFields(
+            log.String("event", "soft error"),
+            log.String("type", "cache timeout"),
+            log.Int("waited.millis", 1500))
+        ...
+    }
+```
+
+#### Starting an empty trace by creating a "root span"
+
+It's always possible to create a "root" `Span` with no parent or other causal
+reference.
+
+```go
+    func xyz() {
+        ...
+        sp := opentracing.StartSpan("operation_name")
+        defer sp.Finish()
+        ...
+    }
+```
+
+#### Creating a (child) Span given an existing (parent) Span
+
+```go
+    func xyz(parentSpan opentracing.Span, ...) {
+        ...
+        sp := opentracing.StartSpan(
+            "operation_name",
+            opentracing.ChildOf(parentSpan.Context()))
+        defer sp.Finish()
+        ...
+    }
+```
+
+#### Serializing to the wire
+
+```go
+    func makeSomeRequest(ctx context.Context) ... {
+        if span := opentracing.SpanFromContext(ctx); span != nil {
+            httpClient := &http.Client{}
+            httpReq, _ := http.NewRequest("GET", "http://myservice/", nil)
+
+            // Transmit the span's TraceContext as HTTP headers on our
+            // outbound request.
+            opentracing.GlobalTracer().Inject(
+                span.Context(),
+                opentracing.HTTPHeaders,
+                opentracing.HTTPHeadersCarrier(httpReq.Header))
+
+            resp, err := httpClient.Do(httpReq)
+            ...
+        }
+        ...
+    }
+```
+
+#### Deserializing from the wire
+
+```go
+    http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
+        var serverSpan opentracing.Span
+        appSpecificOperationName := ...
+        wireContext, err := opentracing.GlobalTracer().Extract(
+            opentracing.HTTPHeaders,
+            opentracing.HTTPHeadersCarrier(req.Header))
+        if err != nil {
+            // Optionally record something about err here
+        }
+
+        // Create the span referring to the RPC client if available.
+        // If wireContext == nil, a root span will be created.
+        serverSpan = opentracing.StartSpan(
+            appSpecificOperationName,
+            ext.RPCServerOption(wireContext))
+
+        defer serverSpan.Finish()
+
+        ctx := opentracing.ContextWithSpan(context.Background(), serverSpan)
+        ...
+    }
+```
+
+#### Conditionally capture a field using `log.Noop`
+
+In some situations, you may want to dynamically decide whether or not
+to log a field.  For example, you may want to capture additional data,
+such as a customer ID, in non-production environments:
+
+```go
+    func Customer(order *Order) log.Field {
+        if os.Getenv("ENVIRONMENT") == "dev" {
+            return log.String("customer", order.Customer.ID)
+        }
+        return log.Noop()
+    }
+```
+
+#### Goroutine-safety
+
+The entire public API is goroutine-safe and does not require external
+synchronization.
+
+## API pointers for those implementing a tracing system
+
+Tracing system implementors may be able to reuse or copy-paste-modify the `basictracer` package, found [here](https://github.com/opentracing/basictracer-go). In particular, see `basictracer.New(...)`.
+
+## API compatibility
+
+For the time being, "mild" backwards-incompatible changes may be made without changing the major version number. As OpenTracing and `opentracing-go` mature, backwards compatibility will become more of a priority.

vendor/github.com/opentracing/opentracing-go/ext/tags.go

@@ -0,0 +1,210 @@
+package ext
+
+import opentracing "github.com/opentracing/opentracing-go"
+
+// These constants define common tag names recommended for better portability across
+// tracing systems and languages/platforms.
+//
+// The tag names are defined as typed strings, so that in addition to the usual use
+//
+//     span.setTag(TagName, value)
+//
+// they also support value type validation via this additional syntax:
+//
+//    TagName.Set(span, value)
+//
+var (
+	//////////////////////////////////////////////////////////////////////
+	// SpanKind (client/server or producer/consumer)
+	//////////////////////////////////////////////////////////////////////
+
+	// SpanKind hints at relationship between spans, e.g. client/server
+	SpanKind = spanKindTagName("span.kind")
+
+	// SpanKindRPCClient marks a span representing the client-side of an RPC
+	// or other remote call
+	SpanKindRPCClientEnum = SpanKindEnum("client")
+	SpanKindRPCClient     = opentracing.Tag{Key: string(SpanKind), Value: SpanKindRPCClientEnum}
+
+	// SpanKindRPCServer marks a span representing the server-side of an RPC
+	// or other remote call
+	SpanKindRPCServerEnum = SpanKindEnum("server")
+	SpanKindRPCServer     = opentracing.Tag{Key: string(SpanKind), Value: SpanKindRPCServerEnum}
+
+	// SpanKindProducer marks a span representing the producer-side of a
+	// message bus
+	SpanKindProducerEnum = SpanKindEnum("producer")
+	SpanKindProducer     = opentracing.Tag{Key: string(SpanKind), Value: SpanKindProducerEnum}
+
+	// SpanKindConsumer marks a span representing the consumer-side of a
+	// message bus
+	SpanKindConsumerEnum = SpanKindEnum("consumer")
+	SpanKindConsumer     = opentracing.Tag{Key: string(SpanKind), Value: SpanKindConsumerEnum}
+
+	//////////////////////////////////////////////////////////////////////
+	// Component name
+	//////////////////////////////////////////////////////////////////////
+
+	// Component is a low-cardinality identifier of the module, library,
+	// or package that is generating a span.
+	Component = stringTagName("component")
+
+	//////////////////////////////////////////////////////////////////////
+	// Sampling hint
+	//////////////////////////////////////////////////////////////////////
+
+	// SamplingPriority determines the priority of sampling this Span.
+	SamplingPriority = uint16TagName("sampling.priority")
+
+	//////////////////////////////////////////////////////////////////////
+	// Peer tags. These tags can be emitted by either client-side of
+	// server-side to describe the other side/service in a peer-to-peer
+	// communications, like an RPC call.
+	//////////////////////////////////////////////////////////////////////
+
+	// PeerService records the service name of the peer.
+	PeerService = stringTagName("peer.service")
+
+	// PeerAddress records the address name of the peer. This may be a "ip:port",
+	// a bare "hostname", a FQDN or even a database DSN substring
+	// like "mysql://username@127.0.0.1:3306/dbname"
+	PeerAddress = stringTagName("peer.address")
+
+	// PeerHostname records the host name of the peer
+	PeerHostname = stringTagName("peer.hostname")
+
+	// PeerHostIPv4 records IP v4 host address of the peer
+	PeerHostIPv4 = ipv4Tag("peer.ipv4")
+
+	// PeerHostIPv6 records IP v6 host address of the peer
+	PeerHostIPv6 = stringTagName("peer.ipv6")
+
+	// PeerPort records port number of the peer
+	PeerPort = uint16TagName("peer.port")
+
+	//////////////////////////////////////////////////////////////////////
+	// HTTP Tags
+	//////////////////////////////////////////////////////////////////////
+
+	// HTTPUrl should be the URL of the request being handled in this segment
+	// of the trace, in standard URI format. The protocol is optional.
+	HTTPUrl = stringTagName("http.url")
+
+	// HTTPMethod is the HTTP method of the request, and is case-insensitive.
+	HTTPMethod = stringTagName("http.method")
+
+	// HTTPStatusCode is the numeric HTTP status code (200, 404, etc) of the
+	// HTTP response.
+	HTTPStatusCode = uint16TagName("http.status_code")
+
+	//////////////////////////////////////////////////////////////////////
+	// DB Tags
+	//////////////////////////////////////////////////////////////////////
+
+	// DBInstance is database instance name.
+	DBInstance = stringTagName("db.instance")
+
+	// DBStatement is a database statement for the given database type.
+	// It can be a query or a prepared statement (i.e., before substitution).
+	DBStatement = stringTagName("db.statement")
+
+	// DBType is a database type. For any SQL database, "sql".
+	// For others, the lower-case database category, e.g. "redis"
+	DBType = stringTagName("db.type")
+
+	// DBUser is a username for accessing database.
+	DBUser = stringTagName("db.user")
+
+	//////////////////////////////////////////////////////////////////////
+	// Message Bus Tag
+	//////////////////////////////////////////////////////////////////////
+
+	// MessageBusDestination is an address at which messages can be exchanged
+	MessageBusDestination = stringTagName("message_bus.destination")
+
+	//////////////////////////////////////////////////////////////////////
+	// Error Tag
+	//////////////////////////////////////////////////////////////////////
+
+	// Error indicates that operation represented by the span resulted in an error.
+	Error = boolTagName("error")
+)
+
+// ---
+
+// SpanKindEnum represents common span types
+type SpanKindEnum string
+
+type spanKindTagName string
+
+// Set adds a string tag to the `span`
+func (tag spanKindTagName) Set(span opentracing.Span, value SpanKindEnum) {
+	span.SetTag(string(tag), value)
+}
+
+type rpcServerOption struct {
+	clientContext opentracing.SpanContext
+}
+
+func (r rpcServerOption) Apply(o *opentracing.StartSpanOptions) {
+	if r.clientContext != nil {
+		opentracing.ChildOf(r.clientContext).Apply(o)
+	}
+	SpanKindRPCServer.Apply(o)
+}
+
+// RPCServerOption returns a StartSpanOption appropriate for an RPC server span
+// with `client` representing the metadata for the remote peer Span if available.
+// In case client == nil, due to the client not being instrumented, this RPC
+// server span will be a root span.
+func RPCServerOption(client opentracing.SpanContext) opentracing.StartSpanOption {
+	return rpcServerOption{client}
+}
+
+// ---
+
+type stringTagName string
+
+// Set adds a string tag to the `span`
+func (tag stringTagName) Set(span opentracing.Span, value string) {
+	span.SetTag(string(tag), value)
+}
+
+// ---
+
+type uint32TagName string
+
+// Set adds a uint32 tag to the `span`
+func (tag uint32TagName) Set(span opentracing.Span, value uint32) {
+	span.SetTag(string(tag), value)
+}
+
+// ---
+
+type uint16TagName string
+
+// Set adds a uint16 tag to the `span`
+func (tag uint16TagName) Set(span opentracing.Span, value uint16) {
+	span.SetTag(string(tag), value)
+}
+
+// ---
+
+type boolTagName string
+
+// Add adds a bool tag to the `span`
+func (tag boolTagName) Set(span opentracing.Span, value bool) {
+	span.SetTag(string(tag), value)
+}
+
+type ipv4Tag string
+
+// Set adds IP v4 host address of the peer as an uint32 value to the `span`, keep this for backward and zipkin compatibility
+func (tag ipv4Tag) Set(span opentracing.Span, value uint32) {
+	span.SetTag(string(tag), value)
+}
+
+// SetString records IP v4 host address of the peer as a .-separated tuple to the `span`. E.g., "127.0.0.1"
+func (tag ipv4Tag) SetString(span opentracing.Span, value string) {
+	span.SetTag(string(tag), value)
+}

vendor/github.com/opentracing/opentracing-go/globaltracer.go

@@ -0,0 +1,32 @@
+package opentracing
+
+var (
+	globalTracer Tracer = NoopTracer{}
+)
+
+// SetGlobalTracer sets the [singleton] opentracing.Tracer returned by
+// GlobalTracer(). Those who use GlobalTracer (rather than directly manage an
+// opentracing.Tracer instance) should call SetGlobalTracer as early as
+// possible in main(), prior to calling the `StartSpan` global func below.
+// Prior to calling `SetGlobalTracer`, any Spans started via the `StartSpan`
+// (etc) globals are noops.
+func SetGlobalTracer(tracer Tracer) {
+	globalTracer = tracer
+}
+
+// GlobalTracer returns the global singleton `Tracer` implementation.
+// Before `SetGlobalTracer()` is called, the `GlobalTracer()` is a noop
+// implementation that drops all data handed to it.
+func GlobalTracer() Tracer {
+	return globalTracer
+}
+
+// StartSpan defers to `Tracer.StartSpan`. See `GlobalTracer()`.
+func StartSpan(operationName string, opts ...StartSpanOption) Span {
+	return globalTracer.StartSpan(operationName, opts...)
+}
+
+// InitGlobalTracer is deprecated. Please use SetGlobalTracer.
+func InitGlobalTracer(tracer Tracer) {
+	SetGlobalTracer(tracer)
+}

vendor/github.com/opentracing/opentracing-go/gocontext.go

@@ -0,0 +1,57 @@
+package opentracing
+
+import "golang.org/x/net/context"
+
+type contextKey struct{}
+
+var activeSpanKey = contextKey{}
+
+// ContextWithSpan returns a new `context.Context` that holds a reference to
+// `span`'s SpanContext.
+func ContextWithSpan(ctx context.Context, span Span) context.Context {
+	return context.WithValue(ctx, activeSpanKey, span)
+}
+
+// SpanFromContext returns the `Span` previously associated with `ctx`, or
+// `nil` if no such `Span` could be found.
+//
+// NOTE: context.Context != SpanContext: the former is Go's intra-process
+// context propagation mechanism, and the latter houses OpenTracing's per-Span
+// identity and baggage information.
+func SpanFromContext(ctx context.Context) Span {
+	val := ctx.Value(activeSpanKey)
+	if sp, ok := val.(Span); ok {
+		return sp
+	}
+	return nil
+}
+
+// StartSpanFromContext starts and returns a Span with `operationName`, using
+// any Span found within `ctx` as a ChildOfRef. If no such parent could be
+// found, StartSpanFromContext creates a root (parentless) Span.
+//
+// The second return value is a context.Context object built around the
+// returned Span.
+//
+// Example usage:
+//
+//    SomeFunction(ctx context.Context, ...) {
+//        sp, ctx := opentracing.StartSpanFromContext(ctx, "SomeFunction")
+//        defer sp.Finish()
+//        ...
+//    }
+func StartSpanFromContext(ctx context.Context, operationName string, opts ...StartSpanOption) (Span, context.Context) {
+	return startSpanFromContextWithTracer(ctx, GlobalTracer(), operationName, opts...)
+}
+
+// startSpanFromContextWithTracer is factored out for testing purposes.
+func startSpanFromContextWithTracer(ctx context.Context, tracer Tracer, operationName string, opts ...StartSpanOption) (Span, context.Context) {
+	var span Span
+	if parentSpan := SpanFromContext(ctx); parentSpan != nil {
+		opts = append(opts, ChildOf(parentSpan.Context()))
+		span = tracer.StartSpan(operationName, opts...)
+	} else {
+		span = tracer.StartSpan(operationName, opts...)
+	}
+	return span, ContextWithSpan(ctx, span)
+}

vendor/github.com/opentracing/opentracing-go/log/field.go

@@ -0,0 +1,269 @@
+package log
+
+import (
+	"fmt"
+	"math"
+)
+
+type fieldType int
+
+const (
+	stringType fieldType = iota
+	boolType
+	intType
+	int32Type
+	uint32Type
+	int64Type
+	uint64Type
+	float32Type
+	float64Type
+	errorType
+	objectType
+	lazyLoggerType
+	noopType
+)
+
+// Field instances are constructed via LogBool, LogString, and so on.
+// Tracing implementations may then handle them via the Field.Marshal
+// method.
+//
+// "heavily influenced by" (i.e., partially stolen from)
+// https://github.com/uber-go/zap
+type Field struct {
+	key          string
+	fieldType    fieldType
+	numericVal   int64
+	stringVal    string
+	interfaceVal interface{}
+}
+
+// String adds a string-valued key:value pair to a Span.LogFields() record
+func String(key, val string) Field {
+	return Field{
+		key:       key,
+		fieldType: stringType,
+		stringVal: val,
+	}
+}
+
+// Bool adds a bool-valued key:value pair to a Span.LogFields() record
+func Bool(key string, val bool) Field {
+	var numericVal int64
+	if val {
+		numericVal = 1
+	}
+	return Field{
+		key:        key,
+		fieldType:  boolType,
+		numericVal: numericVal,
+	}
+}
+
+// Int adds an int-valued key:value pair to a Span.LogFields() record
+func Int(key string, val int) Field {
+	return Field{
+		key:        key,
+		fieldType:  intType,
+		numericVal: int64(val),
+	}
+}
+
+// Int32 adds an int32-valued key:value pair to a Span.LogFields() record
+func Int32(key string, val int32) Field {
+	return Field{
+		key:        key,
+		fieldType:  int32Type,
+		numericVal: int64(val),
+	}
+}
+
+// Int64 adds an int64-valued key:value pair to a Span.LogFields() record
+func Int64(key string, val int64) Field {
+	return Field{
+		key:        key,
+		fieldType:  int64Type,
+		numericVal: val,
+	}
+}
+
+// Uint32 adds a uint32-valued key:value pair to a Span.LogFields() record
+func Uint32(key string, val uint32) Field {
+	return Field{
+		key:        key,
+		fieldType:  uint32Type,
+		numericVal: int64(val),
+	}
+}
+
+// Uint64 adds a uint64-valued key:value pair to a Span.LogFields() record
+func Uint64(key string, val uint64) Field {
+	return Field{
+		key:        key,
+		fieldType:  uint64Type,
+		numericVal: int64(val),
+	}
+}
+
+// Float32 adds a float32-valued key:value pair to a Span.LogFields() record
+func Float32(key string, val float32) Field {
+	return Field{
+		key:        key,
+		fieldType:  float32Type,
+		numericVal: int64(math.Float32bits(val)),
+	}
+}
+
+// Float64 adds a float64-valued key:value pair to a Span.LogFields() record
+func Float64(key string, val float64) Field {
+	return Field{
+		key:        key,
+		fieldType:  float64Type,
+		numericVal: int64(math.Float64bits(val)),
+	}
+}
+
+// Error adds an error with the key "error" to a Span.LogFields() record
+func Error(err error) Field {
+	return Field{
+		key:          "error",
+		fieldType:    errorType,
+		interfaceVal: err,
+	}
+}
+
+// Object adds an object-valued key:value pair to a Span.LogFields() record
+func Object(key string, obj interface{}) Field {
+	return Field{
+		key:          key,
+		fieldType:    objectType,
+		interfaceVal: obj,
+	}
+}
+
+// LazyLogger allows for user-defined, late-bound logging of arbitrary data
+type LazyLogger func(fv Encoder)
+
+// Lazy adds a LazyLogger to a Span.LogFields() record; the tracing
+// implementation will call the LazyLogger function at an indefinite time in
+// the future (after Lazy() returns).
+func Lazy(ll LazyLogger) Field {
+	return Field{
+		fieldType:    lazyLoggerType,
+		interfaceVal: ll,
+	}
+}
+
+// Noop creates a no-op log field that should be ignored by the tracer.
+// It can be used to capture optional fields, for example those that should
+// only be logged in non-production environment:
+//
+//     func customerField(order *Order) log.Field {
+//          if os.Getenv("ENVIRONMENT") == "dev" {
+//              return log.String("customer", order.Customer.ID)
+//          }
+//          return log.Noop()
+//     }
+//
+//     span.LogFields(log.String("event", "purchase"), customerField(order))
+//
+func Noop() Field {
+	return Field{
+		fieldType: noopType,
+	}
+}
+
+// Encoder allows access to the contents of a Field (via a call to
+// Field.Marshal).
+//
+// Tracer implementations typically provide an implementation of Encoder;
+// OpenTracing callers typically do not need to concern themselves with it.
+type Encoder interface {
+	EmitString(key, value string)
+	EmitBool(key string, value bool)
+	EmitInt(key string, value int)
+	EmitInt32(key string, value int32)
+	EmitInt64(key string, value int64)
+	EmitUint32(key string, value uint32)
+	EmitUint64(key string, value uint64)
+	EmitFloat32(key string, value float32)
+	EmitFloat64(key string, value float64)
+	EmitObject(key string, value interface{})
+	EmitLazyLogger(value LazyLogger)
+}
+
+// Marshal passes a Field instance through to the appropriate
+// field-type-specific method of an Encoder.
+func (lf Field) Marshal(visitor Encoder) {
+	switch lf.fieldType {
+	case stringType:
+		visitor.EmitString(lf.key, lf.stringVal)
+	case boolType:
+		visitor.EmitBool(lf.key, lf.numericVal != 0)
+	case intType:
+		visitor.EmitInt(lf.key, int(lf.numericVal))
+	case int32Type:
+		visitor.EmitInt32(lf.key, int32(lf.numericVal))
+	case int64Type:
+		visitor.EmitInt64(lf.key, int64(lf.numericVal))
+	case uint32Type:
+		visitor.EmitUint32(lf.key, uint32(lf.numericVal))
+	case uint64Type:
+		visitor.EmitUint64(lf.key, uint64(lf.numericVal))
+	case float32Type:
+		visitor.EmitFloat32(lf.key, math.Float32frombits(uint32(lf.numericVal)))
+	case float64Type:
+		visitor.EmitFloat64(lf.key, math.Float64frombits(uint64(lf.numericVal)))
+	case errorType:
+		if err, ok := lf.interfaceVal.(error); ok {
+			visitor.EmitString(lf.key, err.Error())
+		} else {
+			visitor.EmitString(lf.key, "<nil>")
+		}
+	case objectType:
+		visitor.EmitObject(lf.key, lf.interfaceVal)
+	case lazyLoggerType:
+		visitor.EmitLazyLogger(lf.interfaceVal.(LazyLogger))
+	case noopType:
+		// intentionally left blank
+	}
+}
+
+// Key returns the field's key.
+func (lf Field) Key() string {
+	return lf.key
+}
+
+// Value returns the field's value as interface{}.
+func (lf Field) Value() interface{} {
+	switch lf.fieldType {
+	case stringType:
+		return lf.stringVal
+	case boolType:
+		return lf.numericVal != 0
+	case intType:
+		return int(lf.numericVal)
+	case int32Type:
+		return int32(lf.numericVal)
+	case int64Type:
+		return int64(lf.numericVal)
+	case uint32Type:
+		return uint32(lf.numericVal)
+	case uint64Type:
+		return uint64(lf.numericVal)
+	case float32Type:
+		return math.Float32frombits(uint32(lf.numericVal))
+	case float64Type:
+		return math.Float64frombits(uint64(lf.numericVal))
+	case errorType, objectType, lazyLoggerType:
+		return lf.interfaceVal
+	case noopType:
+		return nil
+	default:
+		return nil
+	}
+}
+
+// String returns a string representation of the key and value.
+func (lf Field) String() string {
+	return fmt.Sprint(lf.key, ":", lf.Value())
+}

vendor/github.com/opentracing/opentracing-go/log/util.go

@@ -0,0 +1,54 @@
+package log
+
+import "fmt"
+
+// InterleavedKVToFields converts keyValues a la Span.LogKV() to a Field slice
+// a la Span.LogFields().
+func InterleavedKVToFields(keyValues ...interface{}) ([]Field, error) {
+	if len(keyValues)%2 != 0 {
+		return nil, fmt.Errorf("non-even keyValues len: %d", len(keyValues))
+	}
+	fields := make([]Field, len(keyValues)/2)
+	for i := 0; i*2 < len(keyValues); i++ {
+		key, ok := keyValues[i*2].(string)
+		if !ok {
+			return nil, fmt.Errorf(
+				"non-string key (pair #%d): %T",
+				i, keyValues[i*2])
+		}
+		switch typedVal := keyValues[i*2+1].(type) {
+		case bool:
+			fields[i] = Bool(key, typedVal)
+		case string:
+			fields[i] = String(key, typedVal)
+		case int:
+			fields[i] = Int(key, typedVal)
+		case int8:
+			fields[i] = Int32(key, int32(typedVal))
+		case int16:
+			fields[i] = Int32(key, int32(typedVal))
+		case int32:
+			fields[i] = Int32(key, typedVal)
+		case int64:
+			fields[i] = Int64(key, typedVal)
+		case uint:
+			fields[i] = Uint64(key, uint64(typedVal))
+		case uint64:
+			fields[i] = Uint64(key, typedVal)
+		case uint8:
+			fields[i] = Uint32(key, uint32(typedVal))
+		case uint16:
+			fields[i] = Uint32(key, uint32(typedVal))
+		case uint32:
+			fields[i] = Uint32(key, typedVal)
+		case float32:
+			fields[i] = Float32(key, typedVal)
+		case float64:
+			fields[i] = Float64(key, typedVal)
+		default:
+			// When in doubt, coerce to a string
+			fields[i] = String(key, fmt.Sprint(typedVal))
+		}
+	}
+	return fields, nil
+}

vendor/github.com/opentracing/opentracing-go/noop.go

@@ -0,0 +1,64 @@
+package opentracing
+
+import "github.com/opentracing/opentracing-go/log"
+
+// A NoopTracer is a trivial, minimum overhead implementation of Tracer
+// for which all operations are no-ops.
+//
+// The primary use of this implementation is in libraries, such as RPC
+// frameworks, that make tracing an optional feature controlled by the
+// end user. A no-op implementation allows said libraries to use it
+// as the default Tracer and to write instrumentation that does
+// not need to keep checking if the tracer instance is nil.
+//
+// For the same reason, the NoopTracer is the default "global" tracer
+// (see GlobalTracer and SetGlobalTracer functions).
+//
+// WARNING: NoopTracer does not support baggage propagation.
+type NoopTracer struct{}
+
+type noopSpan struct{}
+type noopSpanContext struct{}
+
+var (
+	defaultNoopSpanContext = noopSpanContext{}
+	defaultNoopSpan        = noopSpan{}
+	defaultNoopTracer      = NoopTracer{}
+)
+
+const (
+	emptyString = ""
+)
+
+// noopSpanContext:
+func (n noopSpanContext) ForeachBaggageItem(handler func(k, v string) bool) {}
+
+// noopSpan:
+func (n noopSpan) Context() SpanContext                                  { return defaultNoopSpanContext }
+func (n noopSpan) SetBaggageItem(key, val string) Span                   { return defaultNoopSpan }
+func (n noopSpan) BaggageItem(key string) string                         { return emptyString }
+func (n noopSpan) SetTag(key string, value interface{}) Span             { return n }
+func (n noopSpan) LogFields(fields ...log.Field)                         {}
+func (n noopSpan) LogKV(keyVals ...interface{})                          {}
+func (n noopSpan) Finish()                                               {}
+func (n noopSpan) FinishWithOptions(opts FinishOptions)                  {}
+func (n noopSpan) SetOperationName(operationName string) Span            { return n }
+func (n noopSpan) Tracer() Tracer                                        { return defaultNoopTracer }
+func (n noopSpan) LogEvent(event string)                                 {}
+func (n noopSpan) LogEventWithPayload(event string, payload interface{}) {}
+func (n noopSpan) Log(data LogData)                                      {}
+
+// StartSpan belongs to the Tracer interface.
+func (n NoopTracer) StartSpan(operationName string, opts ...StartSpanOption) Span {
+	return defaultNoopSpan
+}
+
+// Inject belongs to the Tracer interface.
+func (n NoopTracer) Inject(sp SpanContext, format interface{}, carrier interface{}) error {
+	return nil
+}
+
+// Extract belongs to the Tracer interface.
+func (n NoopTracer) Extract(format interface{}, carrier interface{}) (SpanContext, error) {
+	return nil, ErrSpanContextNotFound
+}

vendor/github.com/opentracing/opentracing-go/propagation.go

@@ -0,0 +1,176 @@
+package opentracing
+
+import (
+	"errors"
+	"net/http"
+)
+
+///////////////////////////////////////////////////////////////////////////////
+// CORE PROPAGATION INTERFACES:
+///////////////////////////////////////////////////////////////////////////////
+
+var (
+	// ErrUnsupportedFormat occurs when the `format` passed to Tracer.Inject() or
+	// Tracer.Extract() is not recognized by the Tracer implementation.
+	ErrUnsupportedFormat = errors.New("opentracing: Unknown or unsupported Inject/Extract format")
+
+	// ErrSpanContextNotFound occurs when the `carrier` passed to
+	// Tracer.Extract() is valid and uncorrupted but has insufficient
+	// information to extract a SpanContext.
+	ErrSpanContextNotFound = errors.New("opentracing: SpanContext not found in Extract carrier")
+
+	// ErrInvalidSpanContext errors occur when Tracer.Inject() is asked to
+	// operate on a SpanContext which it is not prepared to handle (for
+	// example, since it was created by a different tracer implementation).
+	ErrInvalidSpanContext = errors.New("opentracing: SpanContext type incompatible with tracer")
+
+	// ErrInvalidCarrier errors occur when Tracer.Inject() or Tracer.Extract()
+	// implementations expect a different type of `carrier` than they are
+	// given.
+	ErrInvalidCarrier = errors.New("opentracing: Invalid Inject/Extract carrier")
+
+	// ErrSpanContextCorrupted occurs when the `carrier` passed to
+	// Tracer.Extract() is of the expected type but is corrupted.
+	ErrSpanContextCorrupted = errors.New("opentracing: SpanContext data corrupted in Extract carrier")
+)
+
+///////////////////////////////////////////////////////////////////////////////
+// BUILTIN PROPAGATION FORMATS:
+///////////////////////////////////////////////////////////////////////////////
+
+// BuiltinFormat is used to demarcate the values within package `opentracing`
+// that are intended for use with the Tracer.Inject() and Tracer.Extract()
+// methods.
+type BuiltinFormat byte
+
+const (
+	// Binary represents SpanContexts as opaque binary data.
+	//
+	// For Tracer.Inject(): the carrier must be an `io.Writer`.
+	//
+	// For Tracer.Extract(): the carrier must be an `io.Reader`.
+	Binary BuiltinFormat = iota
+
+	// TextMap represents SpanContexts as key:value string pairs.
+	//
+	// Unlike HTTPHeaders, the TextMap format does not restrict the key or
+	// value character sets in any way.
+	//
+	// For Tracer.Inject(): the carrier must be a `TextMapWriter`.
+	//
+	// For Tracer.Extract(): the carrier must be a `TextMapReader`.
+	TextMap
+
+	// HTTPHeaders represents SpanContexts as HTTP header string pairs.
+	//
+	// Unlike TextMap, the HTTPHeaders format requires that the keys and values
+	// be valid as HTTP headers as-is (i.e., character casing may be unstable
+	// and special characters are disallowed in keys, values should be
+	// URL-escaped, etc).
+	//
+	// For Tracer.Inject(): the carrier must be a `TextMapWriter`.
+	//
+	// For Tracer.Extract(): the carrier must be a `TextMapReader`.
+	//
+	// See HTTPHeadersCarrier for an implementation of both TextMapWriter
+	// and TextMapReader that defers to an http.Header instance for storage.
+	// For example, Inject():
+	//
+	//    carrier := opentracing.HTTPHeadersCarrier(httpReq.Header)
+	//    err := span.Tracer().Inject(
+	//        span.Context(), opentracing.HTTPHeaders, carrier)
+	//
+	// Or Extract():
+	//
+	//    carrier := opentracing.HTTPHeadersCarrier(httpReq.Header)
+	//    clientContext, err := tracer.Extract(
+	//        opentracing.HTTPHeaders, carrier)
+	//
+	HTTPHeaders
+)
+
+// TextMapWriter is the Inject() carrier for the TextMap builtin format. With
+// it, the caller can encode a SpanContext for propagation as entries in a map
+// of unicode strings.
+type TextMapWriter interface {
+	// Set a key:value pair to the carrier. Multiple calls to Set() for the
+	// same key leads to undefined behavior.
+	//
+	// NOTE: The backing store for the TextMapWriter may contain data unrelated
+	// to SpanContext. As such, Inject() and Extract() implementations that
+	// call the TextMapWriter and TextMapReader interfaces must agree on a
+	// prefix or other convention to distinguish their own key:value pairs.
+	Set(key, val string)
+}
+
+// TextMapReader is the Extract() carrier for the TextMap builtin format. With it,
+// the caller can decode a propagated SpanContext as entries in a map of
+// unicode strings.
+type TextMapReader interface {
+	// ForeachKey returns TextMap contents via repeated calls to the `handler`
+	// function. If any call to `handler` returns a non-nil error, ForeachKey
+	// terminates and returns that error.
+	//
+	// NOTE: The backing store for the TextMapReader may contain data unrelated
+	// to SpanContext. As such, Inject() and Extract() implementations that
+	// call the TextMapWriter and TextMapReader interfaces must agree on a
+	// prefix or other convention to distinguish their own key:value pairs.
+	//
+	// The "foreach" callback pattern reduces unnecessary copying in some cases
+	// and also allows implementations to hold locks while the map is read.
+	ForeachKey(handler func(key, val string) error) error
+}
+
+// TextMapCarrier allows the use of regular map[string]string
+// as both TextMapWriter and TextMapReader.
+type TextMapCarrier map[string]string
+
+// ForeachKey conforms to the TextMapReader interface.
+func (c TextMapCarrier) ForeachKey(handler func(key, val string) error) error {
+	for k, v := range c {
+		if err := handler(k, v); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Set implements Set() of opentracing.TextMapWriter
+func (c TextMapCarrier) Set(key, val string) {
+	c[key] = val
+}
+
+// HTTPHeadersCarrier satisfies both TextMapWriter and TextMapReader.
+//
+// Example usage for server side:
+//
+//     carrier := opentracing.HTTPHeadersCarrier(httpReq.Header)
+//     clientContext, err := tracer.Extract(opentracing.HTTPHeaders, carrier)
+//
+// Example usage for client side:
+//
+//     carrier := opentracing.HTTPHeadersCarrier(httpReq.Header)
+//     err := tracer.Inject(
+//         span.Context(),
+//         opentracing.HTTPHeaders,
+//         carrier)
+//
+type HTTPHeadersCarrier http.Header
+
+// Set conforms to the TextMapWriter interface.
+func (c HTTPHeadersCarrier) Set(key, val string) {
+	h := http.Header(c)
+	h.Add(key, val)
+}
+
+// ForeachKey conforms to the TextMapReader interface.
+func (c HTTPHeadersCarrier) ForeachKey(handler func(key, val string) error) error {
+	for k, vals := range c {
+		for _, v := range vals {
+			if err := handler(k, v); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}

vendor/github.com/opentracing/opentracing-go/span.go

@@ -0,0 +1,185 @@
+package opentracing
+
+import (
+	"time"
+
+	"github.com/opentracing/opentracing-go/log"
+)
+
+// SpanContext represents Span state that must propagate to descendant Spans and across process
+// boundaries (e.g., a <trace_id, span_id, sampled> tuple).
+type SpanContext interface {
+	// ForeachBaggageItem grants access to all baggage items stored in the
+	// SpanContext.
+	// The handler function will be called for each baggage key/value pair.
+	// The ordering of items is not guaranteed.
+	//
+	// The bool return value indicates if the handler wants to continue iterating
+	// through the rest of the baggage items; for example if the handler is trying to
+	// find some baggage item by pattern matching the name, it can return false
+	// as soon as the item is found to stop further iterations.
+	ForeachBaggageItem(handler func(k, v string) bool)
+}
+
+// Span represents an active, un-finished span in the OpenTracing system.
+//
+// Spans are created by the Tracer interface.
+type Span interface {
+	// Sets the end timestamp and finalizes Span state.
+	//
+	// With the exception of calls to Context() (which are always allowed),
+	// Finish() must be the last call made to any span instance, and to do
+	// otherwise leads to undefined behavior.
+	Finish()
+	// FinishWithOptions is like Finish() but with explicit control over
+	// timestamps and log data.
+	FinishWithOptions(opts FinishOptions)
+
+	// Context() yields the SpanContext for this Span. Note that the return
+	// value of Context() is still valid after a call to Span.Finish(), as is
+	// a call to Span.Context() after a call to Span.Finish().
+	Context() SpanContext
+
+	// Sets or changes the operation name.
+	SetOperationName(operationName string) Span
+
+	// Adds a tag to the span.
+	//
+	// If there is a pre-existing tag set for `key`, it is overwritten.
+	//
+	// Tag values can be numeric types, strings, or bools. The behavior of
+	// other tag value types is undefined at the OpenTracing level. If a
+	// tracing system does not know how to handle a particular value type, it
+	// may ignore the tag, but shall not panic.
+	SetTag(key string, value interface{}) Span
+
+	// LogFields is an efficient and type-checked way to record key:value
+	// logging data about a Span, though the programming interface is a little
+	// more verbose than LogKV(). Here's an example:
+	//
+	//    span.LogFields(
+	//        log.String("event", "soft error"),
+	//        log.String("type", "cache timeout"),
+	//        log.Int("waited.millis", 1500))
+	//
+	// Also see Span.FinishWithOptions() and FinishOptions.BulkLogData.
+	LogFields(fields ...log.Field)
+
+	// LogKV is a concise, readable way to record key:value logging data about
+	// a Span, though unfortunately this also makes it less efficient and less
+	// type-safe than LogFields(). Here's an example:
+	//
+	//    span.LogKV(
+	//        "event", "soft error",
+	//        "type", "cache timeout",
+	//        "waited.millis", 1500)
+	//
+	// For LogKV (as opposed to LogFields()), the parameters must appear as
+	// key-value pairs, like
+	//
+	//    span.LogKV(key1, val1, key2, val2, key3, val3, ...)
+	//
+	// The keys must all be strings. The values may be strings, numeric types,
+	// bools, Go error instances, or arbitrary structs.
+	//
+	// (Note to implementors: consider the log.InterleavedKVToFields() helper)
+	LogKV(alternatingKeyValues ...interface{})
+
+	// SetBaggageItem sets a key:value pair on this Span and its SpanContext
+	// that also propagates to descendants of this Span.
+	//
+	// SetBaggageItem() enables powerful functionality given a full-stack
+	// opentracing integration (e.g., arbitrary application data from a mobile
+	// app can make it, transparently, all the way into the depths of a storage
+	// system), and with it some powerful costs: use this feature with care.
+	//
+	// IMPORTANT NOTE #1: SetBaggageItem() will only propagate baggage items to
+	// *future* causal descendants of the associated Span.
+	//
+	// IMPORTANT NOTE #2: Use this thoughtfully and with care. Every key and
+	// value is copied into every local *and remote* child of the associated
+	// Span, and that can add up to a lot of network and cpu overhead.
+	//
+	// Returns a reference to this Span for chaining.
+	SetBaggageItem(restrictedKey, value string) Span
+
+	// Gets the value for a baggage item given its key. Returns the empty string
+	// if the value isn't found in this Span.
+	BaggageItem(restrictedKey string) string
+
+	// Provides access to the Tracer that created this Span.
+	Tracer() Tracer
+
+	// Deprecated: use LogFields or LogKV
+	LogEvent(event string)
+	// Deprecated: use LogFields or LogKV
+	LogEventWithPayload(event string, payload interface{})
+	// Deprecated: use LogFields or LogKV
+	Log(data LogData)
+}
+
+// LogRecord is data associated with a single Span log. Every LogRecord
+// instance must specify at least one Field.
+type LogRecord struct {
+	Timestamp time.Time
+	Fields    []log.Field
+}
+
+// FinishOptions allows Span.FinishWithOptions callers to override the finish
+// timestamp and provide log data via a bulk interface.
+type FinishOptions struct {
+	// FinishTime overrides the Span's finish time, or implicitly becomes
+	// time.Now() if FinishTime.IsZero().
+	//
+	// FinishTime must resolve to a timestamp that's >= the Span's StartTime
+	// (per StartSpanOptions).
+	FinishTime time.Time
+
+	// LogRecords allows the caller to specify the contents of many LogFields()
+	// calls with a single slice. May be nil.
+	//
+	// None of the LogRecord.Timestamp values may be .IsZero() (i.e., they must
+	// be set explicitly). Also, they must be >= the Span's start timestamp and
+	// <= the FinishTime (or time.Now() if FinishTime.IsZero()). Otherwise the
+	// behavior of FinishWithOptions() is undefined.
+	//
+	// If specified, the caller hands off ownership of LogRecords at
+	// FinishWithOptions() invocation time.
+	//
+	// If specified, the (deprecated) BulkLogData must be nil or empty.
+	LogRecords []LogRecord
+
+	// BulkLogData is DEPRECATED.
+	BulkLogData []LogData
+}
+
+// LogData is DEPRECATED
+type LogData struct {
+	Timestamp time.Time
+	Event     string
+	Payload   interface{}
+}
+
+// ToLogRecord converts a deprecated LogData to a non-deprecated LogRecord
+func (ld *LogData) ToLogRecord() LogRecord {
+	var literalTimestamp time.Time
+	if ld.Timestamp.IsZero() {
+		literalTimestamp = time.Now()
+	} else {
+		literalTimestamp = ld.Timestamp
+	}
+	rval := LogRecord{
+		Timestamp: literalTimestamp,
+	}
+	if ld.Payload == nil {
+		rval.Fields = []log.Field{
+			log.String("event", ld.Event),
+		}
+	} else {
+		rval.Fields = []log.Field{
+			log.String("event", ld.Event),
+			log.Object("payload", ld.Payload),
+		}
+	}
+	return rval
+}

vendor/github.com/opentracing/opentracing-go/tracer.go

@@ -0,0 +1,305 @@
+package opentracing
+
+import "time"
+
+// Tracer is a simple, thin interface for Span creation and SpanContext
+// propagation.
+type Tracer interface {
+
+	// Create, start, and return a new Span with the given `operationName` and
+	// incorporate the given StartSpanOption `opts`. (Note that `opts` borrows
+	// from the "functional options" pattern, per
+	// http://dave.cheney.net/2014/10/17/functional-options-for-friendly-apis)
+	//
+	// A Span with no SpanReference options (e.g., opentracing.ChildOf() or
+	// opentracing.FollowsFrom()) becomes the root of its own trace.
+	//
+	// Examples:
+	//
+	//     var tracer opentracing.Tracer = ...
+	//
+	//     // The root-span case:
+	//     sp := tracer.StartSpan("GetFeed")
+	//
+	//     // The vanilla child span case:
+	//     sp := tracer.StartSpan(
+	//         "GetFeed",
+	//         opentracing.ChildOf(parentSpan.Context()))
+	//
+	//     // All the bells and whistles:
+	//     sp := tracer.StartSpan(
+	//         "GetFeed",
+	//         opentracing.ChildOf(parentSpan.Context()),
+	//         opentracing.Tag{"user_agent", loggedReq.UserAgent},
+	//         opentracing.StartTime(loggedReq.Timestamp),
+	//     )
+	//
+	StartSpan(operationName string, opts ...StartSpanOption) Span
+
+	// Inject() takes the `sm` SpanContext instance and injects it for
+	// propagation within `carrier`. The actual type of `carrier` depends on
+	// the value of `format`.
+	//
+	// OpenTracing defines a common set of `format` values (see BuiltinFormat),
+	// and each has an expected carrier type.
+	//
+	// Other packages may declare their own `format` values, much like the keys
+	// used by `context.Context` (see
+	// https://godoc.org/golang.org/x/net/context#WithValue).
+	//
+	// Example usage (sans error handling):
+	//
+	//     carrier := opentracing.HTTPHeadersCarrier(httpReq.Header)
+	//     err := tracer.Inject(
+	//         span.Context(),
+	//         opentracing.HTTPHeaders,
+	//         carrier)
+	//
+	// NOTE: All opentracing.Tracer implementations MUST support all
+	// BuiltinFormats.
+	//
+	// Implementations may return opentracing.ErrUnsupportedFormat if `format`
+	// is not supported by (or not known by) the implementation.
+	//
+	// Implementations may return opentracing.ErrInvalidCarrier or any other
+	// implementation-specific error if the format is supported but injection
+	// fails anyway.
+	//
+	// See Tracer.Extract().
+	Inject(sm SpanContext, format interface{}, carrier interface{}) error
+
+	// Extract() returns a SpanContext instance given `format` and `carrier`.
+	//
+	// OpenTracing defines a common set of `format` values (see BuiltinFormat),
+	// and each has an expected carrier type.
+	//
+	// Other packages may declare their own `format` values, much like the keys
+	// used by `context.Context` (see
+	// https://godoc.org/golang.org/x/net/context#WithValue).
+	//
+	// Example usage (with StartSpan):
+	//
+	//
+	//     carrier := opentracing.HTTPHeadersCarrier(httpReq.Header)
+	//     clientContext, err := tracer.Extract(opentracing.HTTPHeaders, carrier)
+	//
+	//     // ... assuming the ultimate goal here is to resume the trace with a
+	//     // server-side Span:
+	//     var serverSpan opentracing.Span
+	//     if err == nil {
+	//         span = tracer.StartSpan(
+	//             rpcMethodName, ext.RPCServerOption(clientContext))
+	//     } else {
+	//         span = tracer.StartSpan(rpcMethodName)
+	//     }
+	//
+	//
+	// NOTE: All opentracing.Tracer implementations MUST support all
+	// BuiltinFormats.
+	//
+	// Return values:
+	//  - A successful Extract returns a SpanContext instance and a nil error
+	//  - If there was simply no SpanContext to extract in `carrier`, Extract()
+	//    returns (nil, opentracing.ErrSpanContextNotFound)
+	//  - If `format` is unsupported or unrecognized, Extract() returns (nil,
+	//    opentracing.ErrUnsupportedFormat)
+	//  - If there are more fundamental problems with the `carrier` object,
+	//    Extract() may return opentracing.ErrInvalidCarrier,
+	//    opentracing.ErrSpanContextCorrupted, or implementation-specific
+	//    errors.
+	//
+	// See Tracer.Inject().
+	Extract(format interface{}, carrier interface{}) (SpanContext, error)
+}
+
+// StartSpanOptions allows Tracer.StartSpan() callers and implementors a
+// mechanism to override the start timestamp, specify Span References, and make
+// a single Tag or multiple Tags available at Span start time.
+//
+// StartSpan() callers should look at the StartSpanOption interface and
+// implementations available in this package.
+//
+// Tracer implementations can convert a slice of `StartSpanOption` instances
+// into a `StartSpanOptions` struct like so:
+//
+//     func StartSpan(opName string, opts ...opentracing.StartSpanOption) {
+//         sso := opentracing.StartSpanOptions{}
+//         for _, o := range opts {
+//             o.Apply(&sso)
+//         }
+//         ...
+//     }
+//
+type StartSpanOptions struct {
+	// Zero or more causal references to other Spans (via their SpanContext).
+	// If empty, start a "root" Span (i.e., start a new trace).
+	References []SpanReference
+
+	// StartTime overrides the Span's start time, or implicitly becomes
+	// time.Now() if StartTime.IsZero().
+	StartTime time.Time
+
+	// Tags may have zero or more entries; the restrictions on map values are
+	// identical to those for Span.SetTag(). May be nil.
+	//
+	// If specified, the caller hands off ownership of Tags at
+	// StartSpan() invocation time.
+	Tags map[string]interface{}
+}
+
+// StartSpanOption instances (zero or more) may be passed to Tracer.StartSpan.
+//
+// StartSpanOption borrows from the "functional options" pattern, per
+// http://dave.cheney.net/2014/10/17/functional-options-for-friendly-apis
+type StartSpanOption interface {
+	Apply(*StartSpanOptions)
+}
+
+// SpanReferenceType is an enum type describing different categories of
+// relationships between two Spans. If Span-2 refers to Span-1, the
+// SpanReferenceType describes Span-1 from Span-2's perspective. For example,
+// ChildOfRef means that Span-1 created Span-2.
+//
+// NOTE: Span-1 and Span-2 do *not* necessarily depend on each other for
+// completion; e.g., Span-2 may be part of a background job enqueued by Span-1,
+// or Span-2 may be sitting in a distributed queue behind Span-1.
+type SpanReferenceType int
+
+const (
+	// ChildOfRef refers to a parent Span that caused *and* somehow depends
+	// upon the new child Span. Often (but not always), the parent Span cannot
+	// finish until the child Span does.
+	//
+	// An timing diagram for a ChildOfRef that's blocked on the new Span:
+	//
+	//     [-Parent Span---------]
+	//          [-Child Span----]
+	//
+	// See http://opentracing.io/spec/
+	//
+	// See opentracing.ChildOf()
+	ChildOfRef SpanReferenceType = iota
+
+	// FollowsFromRef refers to a parent Span that does not depend in any way
+	// on the result of the new child Span. For instance, one might use
+	// FollowsFromRefs to describe pipeline stages separated by queues,
+	// or a fire-and-forget cache insert at the tail end of a web request.
+	//
+	// A FollowsFromRef Span is part of the same logical trace as the new Span:
+	// i.e., the new Span is somehow caused by the work of its FollowsFromRef.
+	//
+	// All of the following could be valid timing diagrams for children that
+	// "FollowFrom" a parent.
+	//
+	//     [-Parent Span-]  [-Child Span-]
+	//
+	//
+	//     [-Parent Span--]
+	//      [-Child Span-]
+	//
+	//
+	//     [-Parent Span-]
+	//                 [-Child Span-]
+	//
+	// See http://opentracing.io/spec/
+	//
+	// See opentracing.FollowsFrom()
+	FollowsFromRef
+)
+
+// SpanReference is a StartSpanOption that pairs a SpanReferenceType and a
+// referenced SpanContext. See the SpanReferenceType documentation for
+// supported relationships.  If SpanReference is created with
+// ReferencedContext==nil, it has no effect. Thus it allows for a more concise
+// syntax for starting spans:
+//
+//     sc, _ := tracer.Extract(someFormat, someCarrier)
+//     span := tracer.StartSpan("operation", opentracing.ChildOf(sc))
+//
+// The `ChildOf(sc)` option above will not panic if sc == nil, it will just
+// not add the parent span reference to the options.
+type SpanReference struct {
+	Type              SpanReferenceType
+	ReferencedContext SpanContext
+}
+
+// Apply satisfies the StartSpanOption interface.
+func (r SpanReference) Apply(o *StartSpanOptions) {
+	if r.ReferencedContext != nil {
+		o.References = append(o.References, r)
+	}
+}
+
+// ChildOf returns a StartSpanOption pointing to a dependent parent span.
+// If sc == nil, the option has no effect.
+//
+// See ChildOfRef, SpanReference
+func ChildOf(sc SpanContext) SpanReference {
+	return SpanReference{
+		Type:              ChildOfRef,
+		ReferencedContext: sc,
+	}
+}
+
+// FollowsFrom returns a StartSpanOption pointing to a parent Span that caused
+// the child Span but does not directly depend on its result in any way.
+// If sc == nil, the option has no effect.
+//
+// See FollowsFromRef, SpanReference
+func FollowsFrom(sc SpanContext) SpanReference {
+	return SpanReference{
+		Type:              FollowsFromRef,
+		ReferencedContext: sc,
+	}
+}
+
+// StartTime is a StartSpanOption that sets an explicit start timestamp for the
+// new Span.
+type StartTime time.Time
+
+// Apply satisfies the StartSpanOption interface.
+func (t StartTime) Apply(o *StartSpanOptions) {
+	o.StartTime = time.Time(t)
+}
+
+// Tags are a generic map from an arbitrary string key to an opaque value type.
+// The underlying tracing system is responsible for interpreting and
+// serializing the values.
+type Tags map[string]interface{}
+
+// Apply satisfies the StartSpanOption interface.
+func (t Tags) Apply(o *StartSpanOptions) {
+	if o.Tags == nil {
+		o.Tags = make(map[string]interface{})
+	}
+	for k, v := range t {
+		o.Tags[k] = v
+	}
+}
+
+// Tag may be passed as a StartSpanOption to add a tag to new spans,
+// or its Set method may be used to apply the tag to an existing Span,
+// for example:
+//
+// tracer.StartSpan("opName", Tag{"Key", value})
+//
+//   or
+//
+// Tag{"key", value}.Set(span)
+type Tag struct {
+	Key   string
+	Value interface{}
+}
+
+// Apply satisfies the StartSpanOption interface.
+func (t Tag) Apply(o *StartSpanOptions) {
+	if o.Tags == nil {
+		o.Tags = make(map[string]interface{})
+	}
+	o.Tags[t.Key] = t.Value
+}
+
+// Set applies the tag to an existing Span.
+func (t Tag) Set(s Span) {
+	s.SetTag(t.Key, t.Value)
+}

vendor/github.com/uber/jaeger-client-go/CHANGELOG.md

@@ -0,0 +1,131 @@
+Changes by Version
+==================
+
+2.9.1 (unreleased)
+------------------
+
+- nothing yet
+
+
+2.9.0 (2017-07-29)
+------------------
+
+- Pin thrift <= 0.10 (#179)
+- Introduce a parallel interface ContribObserver (#159)
+
+
+2.8.0 (2017-07-05)
+------------------
+
+- Drop `jaeger.` prefix from `jaeger.hostname` process-level tag
+- Add options to set tracer tags
+
+
+2.7.0 (2017-06-21)
+------------------
+
+- Fix rate limiter balance [#135](https://github.com/uber/jaeger-client-go/pull/135) [#140](https://github.com/uber/jaeger-client-go/pull/140)
+- Default client to send Jaeger.thrift [#147](https://github.com/uber/jaeger-client-go/pull/147)
+- Save baggage in span [#153](https://github.com/uber/jaeger-client-go/pull/153)
+- Move reporter.queueLength to the top of the struct to guarantee 64bit alignment [#158](https://github.com/uber/jaeger-client-go/pull/158)
+- Support HTTP transport with jaeger.thrift [#161](https://github.com/uber/jaeger-client-go/pull/161)
+
+
+2.6.0 (2017-03-28)
+------------------
+
+- Add config option to initialize RPC Metrics feature
+
+
+2.5.0 (2017-03-23)
+------------------
+
+- Split request latency metric by success/failure [#123](https://github.com/uber/jaeger-client-go/pull/123)
+- Add mutex to adaptive sampler and fix race condition [#124](https://github.com/uber/jaeger-client-go/pull/124)
+- Fix rate limiter panic [#125](https://github.com/uber/jaeger-client-go/pull/125)
+
+
+2.4.0 (2017-03-21)
+------------------
+
+- Remove `_ms` suffix from request latency metric name [#121](https://github.com/uber/jaeger-client-go/pull/121)
+- Rename all metrics to "request" and "http_request" and use tags for other dimensions [#121](https://github.com/uber/jaeger-client-go/pull/121)
+
+
+2.3.0 (2017-03-20)
+------------------
+
+- Make Span type public to allow access to non-std methods for testing [#117](https://github.com/uber/jaeger-client-go/pull/117)
+- Add a structured way to extract traces for logging with zap [#118](https://github.com/uber/jaeger-client-go/pull/118)
+
+
+2.2.1 (2017-03-14)
+------------------
+
+- Fix panic caused by updating the remote sampler from adaptive sampler to any other sampler type (https://github.com/uber/jaeger-client-go/pull/111)
+
+
+2.2.0 (2017-03-10)
+------------------
+
+- Introduce Observer and SpanObserver (https://github.com/uber/jaeger-client-go/pull/94)
+- Add RPC metrics emitter as Observer/SpanObserver (https://github.com/uber/jaeger-client-go/pull/103)
+
+
+2.1.2 (2017-02-27)
+-------------------
+
+- Fix leaky bucket bug (https://github.com/uber/jaeger-client-go/pull/99)
+- Fix zap logger Infof (https://github.com/uber/jaeger-client-go/pull/100)
+- Add tracer initialization godoc examples
+
+
+2.1.1 (2017-02-21)
+-------------------
+
+- Fix inefficient usage of zap.Logger
+
+
+2.1.0 (2017-02-17)
+-------------------
+
+- Add adapter for zap.Logger (https://github.com/uber-go/zap)
+- Move logging API to ./log/ package
+
+
+2.0.0 (2017-02-08)
+-------------------
+
+- Support Adaptive Sampling
+- Support 128bit Trace IDs
+- Change trace/span IDs from uint64 to strong types TraceID and SpanID
+- Add Zipkin HTTP B3 Propagation format support #72
+- Rip out existing metrics and use github.com/uber/jaeger-lib/metrics
+- Change API for tracer, reporter, sampler initialization
+
+
+1.6.0 (2016-10-14)
+-------------------
+
+- Add Zipkin HTTP transport
+- Support external baggage via jaeger-baggage header
+- Unpin Thrift version, keep to master
+
+
+1.5.1 (2016-09-27)
+-------------------
+
+- Relax dependency on opentracing to ^1
+
+
+1.5.0 (2016-09-27)
+-------------------
+
+- Upgrade to opentracing-go 1.0
+- Support KV logging for Spans
+
+
+1.4.0 (2016-09-14)
+-------------------
+
+- Support debug traces via HTTP header "jaeger-debug-id"

vendor/github.com/uber/jaeger-client-go/CONTRIBUTING.md

@@ -0,0 +1,67 @@
+# Contributing to `jaeger-client-go`
+
+We'd love your help! If you would like to contribute code you can do so through GitHub
+by forking the repository and sending a pull request into the `master` branch.
+
+## Getting Started
+
+This library uses [glide](https://github.com/Masterminds/glide) to manage dependencies.
+
+To get started:
+
+```bash
+git submodule update --init --recursive
+glide install
+make test
+```
+
+## Making A Change
+
+*Before making any significant changes, please [open an
+issue](https://github.com/uber/jaeger-client-go/issues).* Discussing your proposed
+changes ahead of time will make the contribution process smooth for everyone.
+
+Once we've discussed your changes and you've got your code ready, make sure
+that tests are passing (`make test` or `make cover`) and open your PR! Your
+pull request is most likely to be accepted if it:
+
+* Includes tests for new functionality.
+* Follows the guidelines in [Effective
+  Go](https://golang.org/doc/effective_go.html) and the [Go team's common code
+  review comments](https://github.com/golang/go/wiki/CodeReviewComments).
+* Has a [good commit
+  message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+
+## Cutting a Release
+
+See [RELEASE.md](./RELEASE.md)
+
+## License
+
+By contributing your code, you agree to license your contribution under the terms
+of the MIT License: https://github.com/uber/jaeger-client-go/blob/master/LICENSE
+
+If you are adding a new file it should have a header like below.
+
+```
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+```
+

vendor/github.com/uber/jaeger-client-go/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017 Uber Technologies, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/uber/jaeger-client-go/Makefile

@@ -0,0 +1,104 @@
+PROJECT_ROOT=github.com/uber/jaeger-client-go
+PACKAGES := $(shell glide novendor | grep -v ./thrift-gen/...)
+# all .go files that don't exist in hidden directories
+ALL_SRC := $(shell find . -name "*.go" | grep -v -e vendor -e thrift-gen \
+        -e ".*/\..*" \
+        -e ".*/_.*" \
+        -e ".*/mocks.*")
+
+-include crossdock/rules.mk
+
+export GO15VENDOREXPERIMENT=1
+
+RACE=-race
+GOTEST=go test -v $(RACE)
+GOLINT=golint
+GOVET=go vet
+GOFMT=gofmt
+FMT_LOG=fmt.log
+LINT_LOG=lint.log
+
+THRIFT_VER=0.9.3
+THRIFT_IMG=thrift:$(THRIFT_VER)
+THRIFT=docker run -v "${PWD}:/data" $(THRIFT_IMG) thrift
+THRIFT_GO_ARGS=thrift_import="github.com/apache/thrift/lib/go/thrift"
+THRIFT_GEN_DIR=thrift-gen
+
+PASS=$(shell printf "\033[32mPASS\033[0m")
+FAIL=$(shell printf "\033[31mFAIL\033[0m")
+COLORIZE=sed ''/PASS/s//$(PASS)/'' | sed ''/FAIL/s//$(FAIL)/''
+
+.DEFAULT_GOAL := test-and-lint
+
+.PHONY: test-and-lint
+test-and-lint: test fmt lint
+
+.PHONY: test
+test:
+	bash -c "set -e; set -o pipefail; $(GOTEST) $(PACKAGES) | $(COLORIZE)"
+
+.PHONY: fmt
+fmt:
+	$(GOFMT) -e -s -l -w $(ALL_SRC)
+	./scripts/updateLicenses.sh
+
+.PHONY: lint
+lint:
+	$(GOVET) $(PACKAGES)
+	@cat /dev/null > $(LINT_LOG)
+	@$(foreach pkg, $(PACKAGES), $(GOLINT) $(pkg) | grep -v crossdock/thrift >> $(LINT_LOG) || true;)
+	@[ ! -s "$(LINT_LOG)" ] || (echo "Lint Failures" | cat - $(LINT_LOG) && false)
+	@$(GOFMT) -e -s -l $(ALL_SRC) > $(FMT_LOG)
+	@[ ! -s "$(FMT_LOG)" ] || (echo "Go Fmt Failures, run 'make fmt'" | cat - $(FMT_LOG) && false)
+
+
+.PHONY: install
+install:
+	glide --version || go get github.com/Masterminds/glide
+	glide install
+
+
+.PHONY: cover
+cover:
+	./scripts/cover.sh $(shell go list $(PACKAGES))
+	go tool cover -html=cover.out -o cover.html
+
+
+# This is not part of the regular test target because we don't want to slow it
+# down.
+.PHONY: test-examples
+test-examples:
+	make -C examples
+
+# TODO at the moment we're not generating tchan_*.go files
+thrift: idl-submodule thrift-image
+	$(THRIFT) -o /data --gen go:$(THRIFT_GO_ARGS) --out /data/$(THRIFT_GEN_DIR) /data/idl/thrift/agent.thrift
+	sed -i '' 's|"zipkincore"|"$(PROJECT_ROOT)/thrift-gen/zipkincore"|g' $(THRIFT_GEN_DIR)/agent/*.go
+	$(THRIFT) -o /data --gen go:$(THRIFT_GO_ARGS) --out /data/$(THRIFT_GEN_DIR) /data/idl/thrift/sampling.thrift
+	$(THRIFT) -o /data --gen go:$(THRIFT_GO_ARGS) --out /data/$(THRIFT_GEN_DIR) /data/idl/thrift/jaeger.thrift
+	$(THRIFT) -o /data --gen go:$(THRIFT_GO_ARGS) --out /data/$(THRIFT_GEN_DIR) /data/idl/thrift/zipkincore.thrift
+	$(THRIFT) -o /data --gen go:$(THRIFT_GO_ARGS) --out /data/$(THRIFT_GEN_DIR) /data/idl/thrift/baggage.thrift
+	rm -rf thrift-gen/*/*-remote
+	$(THRIFT) -o /data --gen go:$(THRIFT_GO_ARGS) --out /data/crossdock/thrift/ /data/idl/thrift/crossdock/tracetest.thrift
+	rm -rf crossdock/thrift/*/*-remote
+
+idl-submodule:
+	git submodule init
+	git submodule update
+
+thrift-image:
+	$(THRIFT) -version
+
+.PHONY: install_ci
+install_ci: install
+	go get github.com/wadey/gocovmerge
+	go get github.com/mattn/goveralls
+	go get golang.org/x/tools/cmd/cover
+	go get github.com/golang/lint/golint
+
+
+.PHONY: test_ci
+test_ci:
+	@./scripts/cover.sh $(shell go list $(PACKAGES))
+	make lint
+

vendor/github.com/uber/jaeger-client-go/README.md

@@ -0,0 +1,222 @@
+[![GoDoc][doc-img]][doc] [![Build Status][ci-img]][ci] [![Coverage Status][cov-img]][cov] [![OpenTracing 1.0 Enabled][ot-img]][ot-url]
+
+# Jaeger Bindings for Go OpenTracing API
+
+This is a client side library that implements an
+[OpenTracing](http://opentracing.io) Tracer,
+with Zipkin-compatible data model.
+
+## Installation
+
+We recommended using a dependency manager like [glide](https://github.com/Masterminds/glide)
+and [semantic versioning](http://semver.org/) when including this library into an application.
+For example, Jaeger backend imports this library like this:
+
+```yaml
+- package: github.com/uber/jaeger-client-go
+  version: ^2.7.0
+```
+
+If you instead want to use the latest version in `master`, you can pull it via `go get`.
+Note that during `go get` you may see build errors due to incompatible dependencies, which is why
+we recommend using semantic versions for dependencioes.  The error  may be fixed by running
+`make install` (it will install `glide` if you don't have it):
+
+```shell
+go get -u github.com/uber/jaeger-client-go/
+cd $GOPATH/src/github.com/uber/jaeger-client-go/
+git submodule update --init --recursive
+make install
+```
+
+## Initialization
+
+See tracer initialization examples in [godoc](https://godoc.org/github.com/uber/jaeger-client-go/config#pkg-examples)
+and [config/example_test.go](./config/example_test.go).
+
+### Closing the tracer via `io.Closer`
+
+The constructor functions for Jaeger Tracer return the tracer itself and an `io.Closer` instance.
+It is recommended to structure your `main()` so that it calls the `Close()` function on the closer
+before exiting, e.g.
+
+```go
+tracer, closer, err := cfg.New(...)
+defer closer.Close()
+```
+
+This is especially useful for command-line tools that enable tracing, as well as
+for the long-running apps that support graceful shutdown. For example, if your deployment
+system sends SIGTERM instead of killing the process and you trap that signal to do a graceful
+exit, then having `defer closer.Closer()` ensures that all buffered spans are flushed.
+
+### Metrics & Monitoring
+
+The tracer emits a number of different metrics, defined in
+[metrics.go](metrics.go). The monitoring backend is expected to support
+tag-based metric names, e.g. instead of `statsd`-style string names
+like `counters.my-service.jaeger.spans.started.sampled`, the metrics
+are defined by a short name and a collection of key/value tags, for
+example: `name:traces, state:started, sampled:true`.
+
+The monitoring backend is represented by the
+[StatsReporter](stats_reporter.go) interface. An implementation
+of that interface should be passed to the `New` method during
+tracer initialization:
+
+```go
+    stats := // create StatsReporter implementation
+    tracer := config.Tracing.New("your-service-name", stats)
+```
+
+By default, a no-op `NullStatsReporter` is used.
+
+### Logging
+
+The tracer can be configured with an optional logger, which will be
+used to log communication errors, or log spans if a logging reporter
+option is specified in the configuration. The logging API is abstracted
+by the [Logger](logger.go) interface. A logger instance implementing
+this interface can be set on the `Config` object before calling the
+`New` method.
+
+## Instrumentation for Tracing
+
+Since this tracer is fully compliant with OpenTracing API 1.0,
+all code instrumentation should only use the API itself, as described
+in the [opentracing-go]
+(https://github.com/opentracing/opentracing-go) documentation.
+
+## Features
+
+### Reporters
+
+A "reporter" is a component receives the finished spans and reports
+them to somewhere. Under normal circumstances, the Tracer
+should use the default `RemoteReporter`, which sends the spans out of
+process via configurable "transport". For testing purposes, one can
+use an `InMemoryReporter` that accumulates spans in a buffer and
+allows to retrieve them for later verification. Also available are
+`NullReporter`, a no-op reporter that does nothing, a `LoggingReporter`
+which logs all finished spans using their `String()` method, and a
+`CompositeReporter` that can be used to combine more than one reporter
+into one, e.g. to attach a logging reporter to the main remote reporter.
+
+### Span Reporting Transports
+
+The remote reporter uses "transports" to actually send the spans out
+of process. Currently two supported transports are Thrift over UDP
+and Thrift over TChannel. More transports will be added in the future.
+
+The only data format currently used is Zipkin Thrift 1.x span format,
+which allows easy integration of the tracer with Zipkin backend.
+
+### Sampling
+
+The tracer does not record all spans, but only those that have the
+sampling bit set in the `flags`. When a new trace is started and a new
+unique ID is generated, a sampling decision is made whether this trace
+should be sampled. The sampling decision is propagated to all downstream
+calls via the `flags` field of the trace context. The following samplers
+are available:
+  1. `RemotelyControlledSampler` uses one of the other simpler samplers
+     and periodically updates it by polling an external server. This
+     allows dynamic control of the sampling strategies.
+  1. `ConstSampler` always makes the same sampling decision for all
+     trace IDs. it can be configured to either sample all traces, or
+     to sample none.
+  1. `ProbabilisticSampler` uses a fixed sampling rate as a probability
+     for a given trace to be sampled. The actual decision is made by
+     comparing the trace ID with a random number multiplied by the
+     sampling rate.
+  1. `RateLimitingSampler` can be used to allow only a certain fixed
+     number of traces to be sampled per second.
+
+### Baggage Injection
+
+The OpenTracing spec allows for [baggage](https://github.com/opentracing/specification/blob/master/specification.md#set-a-baggage-item),
+which are key value pairs that are added to the span context and propagated
+throughout the trace.
+An external process can inject baggage by setting the special
+HTTP Header `jaeger-baggage` on a request
+
+```sh
+curl -H "jaeger-baggage: key1=value1, key2=value2" http://myhost.com
+```
+
+Baggage can also be programatically set inside your service by doing
+the following
+
+```go
+if span := opentracing.SpanFromContext(ctx); span != nil {
+    span.SetBaggageItem("key", "value")
+}
+```
+
+Another service downstream of that can retrieve the baggage in a similar way:
+
+```go
+if span := opentracing.SpanFromContext(ctx); span != nil {
+    val := span.BaggageItem("key")
+    println(val)
+}
+```
+
+### Debug Traces (Forced Sampling)
+
+#### Programmatically
+
+The OpenTracing API defines a `sampling.priority` standard tag that
+can be used to affect the sampling of a span and its children:
+
+```go
+import (
+    "github.com/opentracing/opentracing-go"
+    "github.com/opentracing/opentracing-go/ext"
+)
+
+span := opentracing.SpanFromContext(ctx)
+ext.SamplingPriority.Set(span, 1)    
+```
+
+#### Via HTTP Headers
+
+Jaeger Tracer also understands a special HTTP Header `jaeger-debug-id`,
+which can be set in the incoming request, e.g.
+
+```sh
+curl -H "jaeger-debug-id: some-correlation-id" http://myhost.com
+```
+
+When Jaeger sees this header in the request that otherwise has no
+tracing context, it ensures that the new trace started for this
+request will be sampled in the "debug" mode (meaning it should survive
+all downsampling that might happen in the collection pipeline), and the
+root span will have a tag as if this statement was executed:
+
+```go
+span.SetTag("jaeger-debug-id", "some-correlation-id")
+```
+
+This allows using Jaeger UI to find the trace by this tag.
+
+### Zipkin HTTP B3 compatible header propagation
+
+Jaeger Tracer supports Zipkin B3 Propagation HTTP headers, which are used
+by a lot of Zipkin tracers. This means that you can use Jaeger in conjunction with e.g. [these OpenZipkin tracers](https://github.com/openzipkin).
+
+However it is not the default propagation format, see [here](zipkin/README.md#NewZipkinB3HTTPHeaderPropagator) how to set it up.
+
+## License
+
+  [The MIT License](LICENSE).
+
+
+[doc-img]: https://godoc.org/github.com/uber/jaeger-client-go?status.svg
+[doc]: https://godoc.org/github.com/uber/jaeger-client-go
+[ci-img]: https://travis-ci.org/uber/jaeger-client-go.svg?branch=master
+[ci]: https://travis-ci.org/uber/jaeger-client-go
+[cov-img]: https://coveralls.io/repos/uber/jaeger-client-go/badge.svg?branch=master&service=github
+[cov]: https://coveralls.io/github/uber/jaeger-client-go?branch=master
+[ot-img]: https://img.shields.io/badge/OpenTracing--1.0-enabled-blue.svg
+[ot-url]: http://opentracing.io

vendor/github.com/uber/jaeger-client-go/RELEASE.md

@@ -0,0 +1,11 @@
+# Release Process
+
+1. Create a PR "Preparing for release X.Y.Z" against master branch
+    * Alter CHANGELOG.md from `<placeholder_version> (unreleased)` to `<X.Y.Z> (YYYY-MM-DD)`
+    * Update `JaegerClientVersion` in constants.go to `Go-X.Y.Z`
+2. Create a release "Release X.Y.Z" on Github
+    * Create Tag `vX.Y.Z`
+    * Copy CHANGELOG.md into the release notes
+3. Create a PR "Back to development" against master branch
+    * Add `<next_version> (unreleased)` to CHANGELOG.md
+    * Update `JaegerClientVersion` in constants.go to `Go-<next_version>dev`

vendor/github.com/uber/jaeger-client-go/baggage_setter.go

@@ -0,0 +1,83 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"github.com/opentracing/opentracing-go/log"
+
+	"github.com/uber/jaeger-client-go/internal/baggage"
+)
+
+// baggageSetter is an actor that can set a baggage value on a Span given certain
+// restrictions (eg. maxValueLength).
+type baggageSetter struct {
+	restrictionManager baggage.RestrictionManager
+	metrics            *Metrics
+}
+
+func newBaggageSetter(restrictionManager baggage.RestrictionManager, metrics *Metrics) *baggageSetter {
+	return &baggageSetter{
+		restrictionManager: restrictionManager,
+		metrics:            metrics,
+	}
+}
+
+// (NB) span should hold the lock before making this call
+func (s *baggageSetter) setBaggage(span *Span, key, value string) {
+	var truncated bool
+	var prevItem string
+	restriction := s.restrictionManager.GetRestriction(key)
+	if !restriction.KeyAllowed() {
+		s.logFields(span, key, value, prevItem, truncated, restriction.KeyAllowed())
+		s.metrics.BaggageUpdateFailure.Inc(1)
+		return
+	}
+	if len(value) > restriction.MaxValueLength() {
+		truncated = true
+		value = value[:restriction.MaxValueLength()]
+		s.metrics.BaggageTruncate.Inc(1)
+	}
+	prevItem = span.context.baggage[key]
+	s.logFields(span, key, value, prevItem, truncated, restriction.KeyAllowed())
+	span.context = span.context.WithBaggageItem(key, value)
+	s.metrics.BaggageUpdateSuccess.Inc(1)
+}
+
+func (s *baggageSetter) logFields(span *Span, key, value, prevItem string, truncated, valid bool) {
+	if !span.context.IsSampled() {
+		return
+	}
+	fields := []log.Field{
+		log.String("event", "baggage"),
+		log.String("key", key),
+		log.String("value", value),
+	}
+	if prevItem != "" {
+		fields = append(fields, log.String("override", "true"))
+	}
+	if truncated {
+		fields = append(fields, log.String("truncated", "true"))
+	}
+	if !valid {
+		fields = append(fields, log.String("invalid", "true"))
+	}
+	span.logFieldsNoLocking(fields...)
+}

vendor/github.com/uber/jaeger-client-go/config/config.go

@@ -0,0 +1,292 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package config
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+	"time"
+
+	"github.com/opentracing/opentracing-go"
+
+	"github.com/uber/jaeger-client-go"
+	"github.com/uber/jaeger-client-go/internal/baggage/remote"
+	"github.com/uber/jaeger-client-go/rpcmetrics"
+)
+
+const defaultSamplingProbability = 0.001
+
+// Configuration configures and creates Jaeger Tracer
+type Configuration struct {
+	Disabled            bool                       `yaml:"disabled"`
+	Sampler             *SamplerConfig             `yaml:"sampler"`
+	Reporter            *ReporterConfig            `yaml:"reporter"`
+	Headers             *jaeger.HeadersConfig      `yaml:"headers"`
+	RPCMetrics          bool                       `yaml:"rpc_metrics"`
+	BaggageRestrictions *BaggageRestrictionsConfig `yaml:"baggage_restrictions"`
+}
+
+// SamplerConfig allows initializing a non-default sampler.  All fields are optional.
+type SamplerConfig struct {
+	// Type specifies the type of the sampler: const, probabilistic, rateLimiting, or remote
+	Type string `yaml:"type"`
+
+	// Param is a value passed to the sampler.
+	// Valid values for Param field are:
+	// - for "const" sampler, 0 or 1 for always false/true respectively
+	// - for "probabilistic" sampler, a probability between 0 and 1
+	// - for "rateLimiting" sampler, the number of spans per second
+	// - for "remote" sampler, param is the same as for "probabilistic"
+	//   and indicates the initial sampling rate before the actual one
+	//   is received from the mothership
+	Param float64 `yaml:"param"`
+
+	// SamplingServerURL is the address of jaeger-agent's HTTP sampling server
+	SamplingServerURL string `yaml:"samplingServerURL"`
+
+	// MaxOperations is the maximum number of operations that the sampler
+	// will keep track of. If an operation is not tracked, a default probabilistic
+	// sampler will be used rather than the per operation specific sampler.
+	MaxOperations int `yaml:"maxOperations"`
+
+	// SamplingRefreshInterval controls how often the remotely controlled sampler will poll
+	// jaeger-agent for the appropriate sampling strategy.
+	SamplingRefreshInterval time.Duration `yaml:"samplingRefreshInterval"`
+}
+
+// ReporterConfig configures the reporter. All fields are optional.
+type ReporterConfig struct {
+	// QueueSize controls how many spans the reporter can keep in memory before it starts dropping
+	// new spans. The queue is continuously drained by a background go-routine, as fast as spans
+	// can be sent out of process.
+	QueueSize int `yaml:"queueSize"`
+
+	// BufferFlushInterval controls how often the buffer is force-flushed, even if it's not full.
+	// It is generally not useful, as it only matters for very low traffic services.
+	BufferFlushInterval time.Duration
+
+	// LogSpans, when true, enables LoggingReporter that runs in parallel with the main reporter
+	// and logs all submitted spans. Main Configuration.Logger must be initialized in the code
+	// for this option to have any effect.
+	LogSpans bool `yaml:"logSpans"`
+
+	// LocalAgentHostPort instructs reporter to send spans to jaeger-agent at this address
+	LocalAgentHostPort string `yaml:"localAgentHostPort"`
+}
+
+// BaggageRestrictionsConfig configures the baggage restrictions manager which can be used to whitelist
+// certain baggage keys. All fields are optional.
+type BaggageRestrictionsConfig struct {
+	// DenyBaggageOnInitializationFailure controls the startup failure mode of the baggage restriction
+	// manager. If true, the manager will not allow any baggage to be written until baggage restrictions have
+	// been retrieved from jaeger-agent. If false, the manager wil allow any baggage to be written until baggage
+	// restrictions have been retrieved from jaeger-agent.
+	DenyBaggageOnInitializationFailure bool `yaml:"denyBaggageOnInitializationFailure"`
+
+	// HostPort is the hostPort of jaeger-agent's baggage restrictions server
+	HostPort string `yaml:"hostPort"`
+
+	// RefreshInterval controls how often the baggage restriction manager will poll
+	// jaeger-agent for the most recent baggage restrictions.
+	RefreshInterval time.Duration `yaml:"refreshInterval"`
+}
+
+type nullCloser struct{}
+
+func (*nullCloser) Close() error { return nil }
+
+// New creates a new Jaeger Tracer, and a closer func that can be used to flush buffers
+// before shutdown.
+func (c Configuration) New(
+	serviceName string,
+	options ...Option,
+) (opentracing.Tracer, io.Closer, error) {
+	if serviceName == "" {
+		return nil, nil, errors.New("no service name provided")
+	}
+	if c.Disabled {
+		return &opentracing.NoopTracer{}, &nullCloser{}, nil
+	}
+	opts := applyOptions(options...)
+	tracerMetrics := jaeger.NewMetrics(opts.metrics, nil)
+	if c.RPCMetrics {
+		Observer(
+			rpcmetrics.NewObserver(
+				opts.metrics.Namespace("jaeger-rpc", map[string]string{"component": "jaeger"}),
+				rpcmetrics.DefaultNameNormalizer,
+			),
+		)(&opts) // adds to c.observers
+	}
+	if c.Sampler == nil {
+		c.Sampler = &SamplerConfig{
+			Type:  jaeger.SamplerTypeRemote,
+			Param: defaultSamplingProbability,
+		}
+	}
+	if c.Reporter == nil {
+		c.Reporter = &ReporterConfig{}
+	}
+
+	sampler, err := c.Sampler.NewSampler(serviceName, tracerMetrics)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	reporter := opts.reporter
+	if reporter == nil {
+		r, err := c.Reporter.NewReporter(serviceName, tracerMetrics, opts.logger)
+		if err != nil {
+			return nil, nil, err
+		}
+		reporter = r
+	}
+
+	tracerOptions := []jaeger.TracerOption{
+		jaeger.TracerOptions.Metrics(tracerMetrics),
+		jaeger.TracerOptions.Logger(opts.logger),
+		jaeger.TracerOptions.CustomHeaderKeys(c.Headers),
+		jaeger.TracerOptions.ZipkinSharedRPCSpan(opts.zipkinSharedRPCSpan),
+	}
+
+	for _, tag := range opts.tags {
+		tracerOptions = append(tracerOptions, jaeger.TracerOptions.Tag(tag.Key, tag.Value))
+	}
+
+	for _, obs := range opts.observers {
+		tracerOptions = append(tracerOptions, jaeger.TracerOptions.Observer(obs))
+	}
+
+	for _, cobs := range opts.contribObservers {
+		tracerOptions = append(tracerOptions, jaeger.TracerOptions.ContribObserver(cobs))
+	}
+
+	if c.BaggageRestrictions != nil {
+		mgr := remote.NewRestrictionManager(
+			serviceName,
+			remote.Options.Metrics(tracerMetrics),
+			remote.Options.Logger(opts.logger),
+			remote.Options.HostPort(c.BaggageRestrictions.HostPort),
+			remote.Options.RefreshInterval(c.BaggageRestrictions.RefreshInterval),
+			remote.Options.DenyBaggageOnInitializationFailure(
+				c.BaggageRestrictions.DenyBaggageOnInitializationFailure,
+			),
+		)
+		tracerOptions = append(tracerOptions, jaeger.TracerOptions.BaggageRestrictionManager(mgr))
+	}
+
+	tracer, closer := jaeger.NewTracer(
+		serviceName,
+		sampler,
+		reporter,
+		tracerOptions...)
+
+	return tracer, closer, nil
+}
+
+// InitGlobalTracer creates a new Jaeger Tracer, and sets it as global OpenTracing Tracer.
+// It returns a closer func that can be used to flush buffers before shutdown.
+func (c Configuration) InitGlobalTracer(
+	serviceName string,
+	options ...Option,
+) (io.Closer, error) {
+	if c.Disabled {
+		return &nullCloser{}, nil
+	}
+	tracer, closer, err := c.New(serviceName, options...)
+	if err != nil {
+		return nil, err
+	}
+	opentracing.InitGlobalTracer(tracer)
+	return closer, nil
+}
+
+// NewSampler creates a new sampler based on the configuration
+func (sc *SamplerConfig) NewSampler(
+	serviceName string,
+	metrics *jaeger.Metrics,
+) (jaeger.Sampler, error) {
+	samplerType := strings.ToLower(sc.Type)
+	if samplerType == jaeger.SamplerTypeConst {
+		return jaeger.NewConstSampler(sc.Param != 0), nil
+	}
+	if samplerType == jaeger.SamplerTypeProbabilistic {
+		if sc.Param >= 0 && sc.Param <= 1.0 {
+			return jaeger.NewProbabilisticSampler(sc.Param)
+		}
+		return nil, fmt.Errorf(
+			"Invalid Param for probabilistic sampler: %v. Expecting value between 0 and 1",
+			sc.Param,
+		)
+	}
+	if samplerType == jaeger.SamplerTypeRateLimiting {
+		return jaeger.NewRateLimitingSampler(sc.Param), nil
+	}
+	if samplerType == jaeger.SamplerTypeRemote || sc.Type == "" {
+		sc2 := *sc
+		sc2.Type = jaeger.SamplerTypeProbabilistic
+		initSampler, err := sc2.NewSampler(serviceName, nil)
+		if err != nil {
+			return nil, err
+		}
+		options := []jaeger.SamplerOption{
+			jaeger.SamplerOptions.Metrics(metrics),
+			jaeger.SamplerOptions.InitialSampler(initSampler),
+			jaeger.SamplerOptions.SamplingServerURL(sc.SamplingServerURL),
+		}
+		if sc.MaxOperations != 0 {
+			options = append(options, jaeger.SamplerOptions.MaxOperations(sc.MaxOperations))
+		}
+		if sc.SamplingRefreshInterval != 0 {
+			options = append(options, jaeger.SamplerOptions.SamplingRefreshInterval(sc.SamplingRefreshInterval))
+		}
+		return jaeger.NewRemotelyControlledSampler(serviceName, options...), nil
+	}
+	return nil, fmt.Errorf("Unknown sampler type %v", sc.Type)
+}
+
+// NewReporter instantiates a new reporter that submits spans to tcollector
+func (rc *ReporterConfig) NewReporter(
+	serviceName string,
+	metrics *jaeger.Metrics,
+	logger jaeger.Logger,
+) (jaeger.Reporter, error) {
+	sender, err := rc.newTransport()
+	if err != nil {
+		return nil, err
+	}
+	reporter := jaeger.NewRemoteReporter(
+		sender,
+		jaeger.ReporterOptions.QueueSize(rc.QueueSize),
+		jaeger.ReporterOptions.BufferFlushInterval(rc.BufferFlushInterval),
+		jaeger.ReporterOptions.Logger(logger),
+		jaeger.ReporterOptions.Metrics(metrics))
+	if rc.LogSpans && logger != nil {
+		logger.Infof("Initializing logging reporter\n")
+		reporter = jaeger.NewCompositeReporter(jaeger.NewLoggingReporter(logger), reporter)
+	}
+	return reporter, err
+}
+
+func (rc *ReporterConfig) newTransport() (jaeger.Transport, error) {
+	return jaeger.NewUDPTransport(rc.LocalAgentHostPort, 0)
+}

vendor/github.com/uber/jaeger-client-go/config/options.go

@@ -0,0 +1,111 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package config
+
+import (
+	opentracing "github.com/opentracing/opentracing-go"
+	"github.com/uber/jaeger-lib/metrics"
+
+	"github.com/uber/jaeger-client-go"
+)
+
+// Option is a function that sets some option on the client.
+type Option func(c *Options)
+
+// Options control behavior of the client.
+type Options struct {
+	metrics             metrics.Factory
+	logger              jaeger.Logger
+	reporter            jaeger.Reporter
+	contribObservers    []jaeger.ContribObserver
+	observers           []jaeger.Observer
+	zipkinSharedRPCSpan bool
+	tags                []opentracing.Tag
+}
+
+// Metrics creates an Option that initializes Metrics in the tracer,
+// which is used to emit statistics about spans.
+func Metrics(factory metrics.Factory) Option {
+	return func(c *Options) {
+		c.metrics = factory
+	}
+}
+
+// Logger can be provided to log Reporter errors, as well as to log spans
+// if Reporter.LogSpans is set to true.
+func Logger(logger jaeger.Logger) Option {
+	return func(c *Options) {
+		c.logger = logger
+	}
+}
+
+// Reporter can be provided explicitly to override the configuration.
+// Useful for testing, e.g. by passing InMemoryReporter.
+func Reporter(reporter jaeger.Reporter) Option {
+	return func(c *Options) {
+		c.reporter = reporter
+	}
+}
+
+// Observer can be registered with the Tracer to receive notifications about new Spans.
+func Observer(observer jaeger.Observer) Option {
+	return func(c *Options) {
+		c.observers = append(c.observers, observer)
+	}
+}
+
+// ContribObserver can be registered with the Tracer to recieve notifications
+// about new spans.
+func ContribObserver(observer jaeger.ContribObserver) Option {
+	return func(c *Options) {
+		c.contribObservers = append(c.contribObservers, observer)
+	}
+}
+
+// ZipkinSharedRPCSpan creates an option that enables sharing span ID between client
+// and server spans a la zipkin. If false, client and server spans will be assigned
+// different IDs.
+func ZipkinSharedRPCSpan(zipkinSharedRPCSpan bool) Option {
+	return func(c *Options) {
+		c.zipkinSharedRPCSpan = zipkinSharedRPCSpan
+	}
+}
+
+// Tag creates an option that adds a tracer-level tag.
+func Tag(key string, value interface{}) Option {
+	return func(c *Options) {
+		c.tags = append(c.tags, opentracing.Tag{Key: key, Value: value})
+	}
+}
+
+func applyOptions(options ...Option) Options {
+	opts := Options{}
+	for _, option := range options {
+		option(&opts)
+	}
+	if opts.metrics == nil {
+		opts.metrics = metrics.NullFactory
+	}
+	if opts.logger == nil {
+		opts.logger = jaeger.NullLogger
+	}
+	return opts
+}

vendor/github.com/uber/jaeger-client-go/constants.go

@@ -0,0 +1,82 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+const (
+	// JaegerClientVersion is the version of the client library reported as Span tag.
+	JaegerClientVersion = "Go-2.9.1dev"
+
+	// JaegerClientVersionTagKey is the name of the tag used to report client version.
+	JaegerClientVersionTagKey = "jaeger.version"
+
+	// JaegerDebugHeader is the name of HTTP header or a TextMap carrier key which,
+	// if found in the carrier, forces the trace to be sampled as "debug" trace.
+	// The value of the header is recorded as the tag on the root span, so that the
+	// trace can be found in the UI using this value as a correlation ID.
+	JaegerDebugHeader = "jaeger-debug-id"
+
+	// JaegerBaggageHeader is the name of the HTTP header that is used to submit baggage.
+	// It differs from TraceBaggageHeaderPrefix in that it can be used only in cases where
+	// a root span does not exist.
+	JaegerBaggageHeader = "jaeger-baggage"
+
+	// TracerHostnameTagKey used to report host name of the process.
+	TracerHostnameTagKey = "hostname"
+
+	// TracerIPTagKey used to report ip of the process.
+	TracerIPTagKey = "ip"
+
+	// SamplerTypeTagKey reports which sampler was used on the root span.
+	SamplerTypeTagKey = "sampler.type"
+
+	// SamplerParamTagKey reports the parameter of the sampler, like sampling probability.
+	SamplerParamTagKey = "sampler.param"
+
+	// TraceContextHeaderName is the http header name used to propagate tracing context.
+	// This must be in lower-case to avoid mismatches when decoding incoming headers.
+	TraceContextHeaderName = "uber-trace-id"
+
+	// TracerStateHeaderName is deprecated.
+	// Deprecated: use TraceContextHeaderName
+	TracerStateHeaderName = TraceContextHeaderName
+
+	// TraceBaggageHeaderPrefix is the prefix for http headers used to propagate baggage.
+	// This must be in lower-case to avoid mismatches when decoding incoming headers.
+	TraceBaggageHeaderPrefix = "uberctx-"
+
+	// SamplerTypeConst is the type of sampler that always makes the same decision.
+	SamplerTypeConst = "const"
+
+	// SamplerTypeRemote is the type of sampler that polls Jaeger agent for sampling strategy.
+	SamplerTypeRemote = "remote"
+
+	// SamplerTypeProbabilistic is the type of sampler that samples traces
+	// with a certain fixed probability.
+	SamplerTypeProbabilistic = "probabilistic"
+
+	// SamplerTypeRateLimiting is the type of sampler that samples
+	// only up to a fixed number of traces per second.
+	SamplerTypeRateLimiting = "ratelimiting"
+
+	// SamplerTypeLowerBound is the type of sampler that samples
+	// only up to a fixed number of traces per second.
+	SamplerTypeLowerBound = "lowerbound"
+)

vendor/github.com/uber/jaeger-client-go/context.go

@@ -0,0 +1,264 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+const (
+	flagSampled = byte(1)
+	flagDebug   = byte(2)
+)
+
+var (
+	errEmptyTracerStateString     = errors.New("Cannot convert empty string to tracer state")
+	errMalformedTracerStateString = errors.New("String does not match tracer state format")
+
+	emptyContext = SpanContext{}
+)
+
+// TraceID represents unique 128bit identifier of a trace
+type TraceID struct {
+	High, Low uint64
+}
+
+// SpanID represents unique 64bit identifier of a span
+type SpanID uint64
+
+// SpanContext represents propagated span identity and state
+type SpanContext struct {
+	// traceID represents globally unique ID of the trace.
+	// Usually generated as a random number.
+	traceID TraceID
+
+	// spanID represents span ID that must be unique within its trace,
+	// but does not have to be globally unique.
+	spanID SpanID
+
+	// parentID refers to the ID of the parent span.
+	// Should be 0 if the current span is a root span.
+	parentID SpanID
+
+	// flags is a bitmap containing such bits as 'sampled' and 'debug'.
+	flags byte
+
+	// Distributed Context baggage. The is a snapshot in time.
+	baggage map[string]string
+
+	// debugID can be set to some correlation ID when the context is being
+	// extracted from a TextMap carrier.
+	//
+	// See JaegerDebugHeader in constants.go
+	debugID string
+}
+
+// ForeachBaggageItem implements ForeachBaggageItem() of opentracing.SpanContext
+func (c SpanContext) ForeachBaggageItem(handler func(k, v string) bool) {
+	for k, v := range c.baggage {
+		if !handler(k, v) {
+			break
+		}
+	}
+}
+
+// IsSampled returns whether this trace was chosen for permanent storage
+// by the sampling mechanism of the tracer.
+func (c SpanContext) IsSampled() bool {
+	return (c.flags & flagSampled) == flagSampled
+}
+
+// IsDebug indicates whether sampling was explicitly requested by the service.
+func (c SpanContext) IsDebug() bool {
+	return (c.flags & flagDebug) == flagDebug
+}
+
+// IsValid indicates whether this context actually represents a valid trace.
+func (c SpanContext) IsValid() bool {
+	return c.traceID.IsValid() && c.spanID != 0
+}
+
+func (c SpanContext) String() string {
+	if c.traceID.High == 0 {
+		return fmt.Sprintf("%x:%x:%x:%x", c.traceID.Low, uint64(c.spanID), uint64(c.parentID), c.flags)
+	}
+	return fmt.Sprintf("%x%016x:%x:%x:%x", c.traceID.High, c.traceID.Low, uint64(c.spanID), uint64(c.parentID), c.flags)
+}
+
+// ContextFromString reconstructs the Context encoded in a string
+func ContextFromString(value string) (SpanContext, error) {
+	var context SpanContext
+	if value == "" {
+		return emptyContext, errEmptyTracerStateString
+	}
+	parts := strings.Split(value, ":")
+	if len(parts) != 4 {
+		return emptyContext, errMalformedTracerStateString
+	}
+	var err error
+	if context.traceID, err = TraceIDFromString(parts[0]); err != nil {
+		return emptyContext, err
+	}
+	if context.spanID, err = SpanIDFromString(parts[1]); err != nil {
+		return emptyContext, err
+	}
+	if context.parentID, err = SpanIDFromString(parts[2]); err != nil {
+		return emptyContext, err
+	}
+	flags, err := strconv.ParseUint(parts[3], 10, 8)
+	if err != nil {
+		return emptyContext, err
+	}
+	context.flags = byte(flags)
+	return context, nil
+}
+
+// TraceID returns the trace ID of this span context
+func (c SpanContext) TraceID() TraceID {
+	return c.traceID
+}
+
+// SpanID returns the span ID of this span context
+func (c SpanContext) SpanID() SpanID {
+	return c.spanID
+}
+
+// ParentID returns the parent span ID of this span context
+func (c SpanContext) ParentID() SpanID {
+	return c.parentID
+}
+
+// NewSpanContext creates a new instance of SpanContext
+func NewSpanContext(traceID TraceID, spanID, parentID SpanID, sampled bool, baggage map[string]string) SpanContext {
+	flags := byte(0)
+	if sampled {
+		flags = flagSampled
+	}
+	return SpanContext{
+		traceID:  traceID,
+		spanID:   spanID,
+		parentID: parentID,
+		flags:    flags,
+		baggage:  baggage}
+}
+
+// CopyFrom copies data from ctx into this context, including span identity and baggage.
+// TODO This is only used by interop.go. Remove once TChannel Go supports OpenTracing.
+func (c *SpanContext) CopyFrom(ctx *SpanContext) {
+	c.traceID = ctx.traceID
+	c.spanID = ctx.spanID
+	c.parentID = ctx.parentID
+	c.flags = ctx.flags
+	if l := len(ctx.baggage); l > 0 {
+		c.baggage = make(map[string]string, l)
+		for k, v := range ctx.baggage {
+			c.baggage[k] = v
+		}
+	} else {
+		c.baggage = nil
+	}
+}
+
+// WithBaggageItem creates a new context with an extra baggage item.
+func (c SpanContext) WithBaggageItem(key, value string) SpanContext {
+	var newBaggage map[string]string
+	if c.baggage == nil {
+		newBaggage = map[string]string{key: value}
+	} else {
+		newBaggage = make(map[string]string, len(c.baggage)+1)
+		for k, v := range c.baggage {
+			newBaggage[k] = v
+		}
+		newBaggage[key] = value
+	}
+	// Use positional parameters so the compiler will help catch new fields.
+	return SpanContext{c.traceID, c.spanID, c.parentID, c.flags, newBaggage, ""}
+}
+
+// isDebugIDContainerOnly returns true when the instance of the context is only
+// used to return the debug/correlation ID from extract() method. This happens
+// in the situation when "jaeger-debug-id" header is passed in the carrier to
+// the extract() method, but the request otherwise has no span context in it.
+// Previously this would've returned opentracing.ErrSpanContextNotFound from the
+// extract method, but now it returns a dummy context with only debugID filled in.
+//
+// See JaegerDebugHeader in constants.go
+// See textMapPropagator#Extract
+func (c *SpanContext) isDebugIDContainerOnly() bool {
+	return !c.traceID.IsValid() && c.debugID != ""
+}
+
+// ------- TraceID -------
+
+func (t TraceID) String() string {
+	if t.High == 0 {
+		return fmt.Sprintf("%x", t.Low)
+	}
+	return fmt.Sprintf("%x%016x", t.High, t.Low)
+}
+
+// TraceIDFromString creates a TraceID from a hexadecimal string
+func TraceIDFromString(s string) (TraceID, error) {
+	var hi, lo uint64
+	var err error
+	if len(s) > 32 {
+		return TraceID{}, fmt.Errorf("TraceID cannot be longer than 32 hex characters: %s", s)
+	} else if len(s) > 16 {
+		hiLen := len(s) - 16
+		if hi, err = strconv.ParseUint(s[0:hiLen], 16, 64); err != nil {
+			return TraceID{}, err
+		}
+		if lo, err = strconv.ParseUint(s[hiLen:], 16, 64); err != nil {
+			return TraceID{}, err
+		}
+	} else {
+		if lo, err = strconv.ParseUint(s, 16, 64); err != nil {
+			return TraceID{}, err
+		}
+	}
+	return TraceID{High: hi, Low: lo}, nil
+}
+
+// IsValid checks if the trace ID is valid, i.e. not zero.
+func (t TraceID) IsValid() bool {
+	return t.High != 0 || t.Low != 0
+}
+
+// ------- SpanID -------
+
+func (s SpanID) String() string {
+	return fmt.Sprintf("%x", uint64(s))
+}
+
+// SpanIDFromString creates a SpanID from a hexadecimal string
+func SpanIDFromString(s string) (SpanID, error) {
+	if len(s) > 16 {
+		return SpanID(0), fmt.Errorf("SpanID cannot be longer than 16 hex characters: %s", s)
+	}
+	id, err := strconv.ParseUint(s, 16, 64)
+	if err != nil {
+		return SpanID(0), err
+	}
+	return SpanID(id), nil
+}

vendor/github.com/uber/jaeger-client-go/contrib_observer.go

@@ -0,0 +1,62 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	opentracing "github.com/opentracing/opentracing-go"
+)
+
+// ContribObserver can be registered with the Tracer to receive notifications
+// about new Spans. Modelled after github.com/opentracing-contrib/go-observer.
+type ContribObserver interface {
+	// Create and return a span observer. Called when a span starts.
+	// If the Observer is not interested in the given span, it must return (nil, false).
+	// E.g :
+	//     func StartSpan(opName string, opts ...opentracing.StartSpanOption) {
+	//         var sp opentracing.Span
+	//         sso := opentracing.StartSpanOptions{}
+	//         if spanObserver, ok := Observer.OnStartSpan(span, opName, sso); ok {
+	//             // we have a valid SpanObserver
+	//         }
+	//         ...
+	//     }
+	OnStartSpan(sp opentracing.Span, operationName string, options opentracing.StartSpanOptions) (ContribSpanObserver, bool)
+}
+
+// ContribSpanObserver is created by the Observer and receives notifications
+// about other Span events. This interface is meant to match
+// github.com/opentracing-contrib/go-observer, via duck typing, without
+// directly importing the go-observer package.
+type ContribSpanObserver interface {
+	OnSetOperationName(operationName string)
+	OnSetTag(key string, value interface{})
+	OnFinish(options opentracing.FinishOptions)
+}
+
+// wrapper observer for the old observers (see observer.go)
+type oldObserver struct {
+	obs Observer
+}
+
+func (o *oldObserver) OnStartSpan(sp opentracing.Span, operationName string, options opentracing.StartSpanOptions) (ContribSpanObserver, bool) {
+	spanObserver := o.obs.OnStartSpan(operationName, options)
+	return spanObserver, spanObserver != nil
+}

vendor/github.com/uber/jaeger-client-go/doc.go

@@ -0,0 +1,30 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+/*
+Package jaeger implements an OpenTracing (http://opentracing.io) Tracer.
+It is currently using Zipkin-compatible data model and can be directly
+itegrated with Zipkin backend (http://zipkin.io).
+
+For integration instructions please refer to the README:
+
+https://github.com/uber/jaeger-client-go/blob/master/README.md
+*/
+package jaeger

vendor/github.com/uber/jaeger-client-go/glide.lock

@@ -0,0 +1,75 @@
+hash: 50e5f204fc6ee9ff66efb1275c7d12f78f8f21a2de98ed38c947d01eb2064b0f
+updated: 2017-07-28T19:53:12.495163139-04:00
+imports:
+- name: github.com/apache/thrift
+  version: b2a4d4ae21c789b689dd162deb819665567f481c
+  subpackages:
+  - lib/go/thrift
+- name: github.com/codahale/hdrhistogram
+  version: 3a0bb77429bd3a61596f5e8a3172445844342120
+- name: github.com/crossdock/crossdock-go
+  version: 049aabb0122b03bc9bd30cab8f3f91fb60166361
+  subpackages:
+  - assert
+  - require
+- name: github.com/davecgh/go-spew
+  version: adab96458c51a58dc1783b3335dcce5461522e75
+  subpackages:
+  - spew
+- name: github.com/opentracing/opentracing-go
+  version: 1949ddbfd147afd4d964a9f00b24eb291e0e7c38
+  subpackages:
+  - ext
+  - log
+- name: github.com/pmezard/go-difflib
+  version: 792786c7400a136282c1664665ae0a8db921c6c2
+  subpackages:
+  - difflib
+- name: github.com/stretchr/testify
+  version: 69483b4bd14f5845b5a1e55bca19e954e827f1d0
+  subpackages:
+  - assert
+  - require
+  - suite
+- name: github.com/uber-go/atomic
+  version: 4e336646b2ef9fc6e47be8e21594178f98e5ebcf
+- name: github.com/uber/jaeger-lib
+  version: e3c1d3b562900c6ac0a7ded654cb95d88e72b63e
+  subpackages:
+  - metrics
+  - metrics/testutils
+- name: github.com/uber/tchannel-go
+  version: b99c1d7cecb0fdc882bed0098e7cae6ec7459059
+  subpackages:
+  - atomic
+  - internal/argreader
+  - relay
+  - thrift
+  - thrift/gen-go/meta
+  - tnet
+  - tos
+  - trace/thrift/gen-go/tcollector
+  - trand
+  - typed
+- name: go.uber.org/atomic
+  version: 4e336646b2ef9fc6e47be8e21594178f98e5ebcf
+- name: go.uber.org/zap
+  version: 6a4e056f2cc954cfec3581729e758909604b3f76
+  subpackages:
+  - buffer
+  - internal/bufferpool
+  - internal/color
+  - internal/exit
+  - internal/multierror
+  - zapcore
+- name: golang.org/x/net
+  version: f5079bd7f6f74e23c4d65efa0f4ce14cbd6a3c0f
+  subpackages:
+  - bpf
+  - context
+  - context/ctxhttp
+  - internal/iana
+  - internal/socket
+  - ipv4
+  - ipv6
+testImports: []

vendor/github.com/uber/jaeger-client-go/glide.yaml

@@ -0,0 +1,33 @@
+package: github.com/uber/jaeger-client-go
+import:
+- package: github.com/apache/thrift
+  version: ">=0.9.3, <0.11.0"
+  subpackages:
+  - lib/go/thrift
+- package: github.com/opentracing/opentracing-go
+  version: ^1
+  subpackages:
+  - ext
+  - log
+- package: golang.org/x/net
+  subpackages:
+  - context
+- package: github.com/uber/tchannel-go
+  version: ^1.1.0
+  subpackages:
+  - atomic
+  - thrift
+  - thrift/gen-go/meta
+  - tnet
+  - trace/thrift/gen-go/tcollector
+  - typed
+- package: github.com/stretchr/testify
+  version: ^1.1.3
+  subpackages:
+  - assert
+  - require
+  - suite
+- package: github.com/crossdock/crossdock-go
+- package: github.com/uber/jaeger-lib
+  subpackages:
+  - metrics

vendor/github.com/uber/jaeger-client-go/header.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+// HeadersConfig contains the values for the header keys that Jaeger will use.
+// These values may be either custom or default depending on whether custom
+// values were provided via a configuration.
+type HeadersConfig struct {
+	// JaegerDebugHeader is the name of HTTP header or a TextMap carrier key which,
+	// if found in the carrier, forces the trace to be sampled as "debug" trace.
+	// The value of the header is recorded as the tag on the root span, so that the
+	// trace can be found in the UI using this value as a correlation ID.
+	JaegerDebugHeader string `yaml:"jaegerDebugHeader"`
+
+	// JaegerBaggageHeader is the name of the HTTP header that is used to submit baggage.
+	// It differs from TraceBaggageHeaderPrefix in that it can be used only in cases where
+	// a root span does not exist.
+	JaegerBaggageHeader string `yaml:"jaegerBaggageHeader"`
+
+	// TraceContextHeaderName is the http header name used to propagate tracing context.
+	// This must be in lower-case to avoid mismatches when decoding incoming headers.
+	TraceContextHeaderName string `yaml:"TraceContextHeaderName"`
+
+	// TraceBaggageHeaderPrefix is the prefix for http headers used to propagate baggage.
+	// This must be in lower-case to avoid mismatches when decoding incoming headers.
+	TraceBaggageHeaderPrefix string `yaml:"traceBaggageHeaderPrefix"`
+}
+
+func (c *HeadersConfig) applyDefaults() *HeadersConfig {
+	if c.JaegerBaggageHeader == "" {
+		c.JaegerBaggageHeader = JaegerBaggageHeader
+	}
+	if c.JaegerDebugHeader == "" {
+		c.JaegerDebugHeader = JaegerDebugHeader
+	}
+	if c.TraceBaggageHeaderPrefix == "" {
+		c.TraceBaggageHeaderPrefix = TraceBaggageHeaderPrefix
+	}
+	if c.TraceContextHeaderName == "" {
+		c.TraceContextHeaderName = TraceContextHeaderName
+	}
+	return c
+}
+
+func getDefaultHeadersConfig() *HeadersConfig {
+	return &HeadersConfig{
+		JaegerDebugHeader:        JaegerDebugHeader,
+		JaegerBaggageHeader:      JaegerBaggageHeader,
+		TraceContextHeaderName:   TraceContextHeaderName,
+		TraceBaggageHeaderPrefix: TraceBaggageHeaderPrefix,
+	}
+}

vendor/github.com/uber/jaeger-client-go/internal/baggage/remote/options.go

@@ -0,0 +1,107 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package remote
+
+import (
+	"time"
+
+	"github.com/uber/jaeger-client-go"
+)
+
+const (
+	defaultMaxValueLength  = 2048
+	defaultRefreshInterval = time.Minute
+	defaultHostPort        = "localhost:5778"
+)
+
+// Option is a function that sets some option on the RestrictionManager
+type Option func(options *options)
+
+// Options is a factory for all available options
+var Options options
+
+type options struct {
+	denyBaggageOnInitializationFailure bool
+	metrics                            *jaeger.Metrics
+	logger                             jaeger.Logger
+	hostPort                           string
+	refreshInterval                    time.Duration
+}
+
+// DenyBaggageOnInitializationFailure creates an Option that determines the startup failure mode of RestrictionManager.
+// If DenyBaggageOnInitializationFailure is true, RestrictionManager will not allow any baggage to be written until baggage
+// restrictions have been retrieved from agent.
+// If DenyBaggageOnInitializationFailure is false, RestrictionManager will allow any baggage to be written until baggage
+// restrictions have been retrieved from agent.
+func (options) DenyBaggageOnInitializationFailure(b bool) Option {
+	return func(o *options) {
+		o.denyBaggageOnInitializationFailure = b
+	}
+}
+
+// Metrics creates an Option that initializes Metrics on the RestrictionManager, which is used to emit statistics.
+func (options) Metrics(m *jaeger.Metrics) Option {
+	return func(o *options) {
+		o.metrics = m
+	}
+}
+
+// Logger creates an Option that sets the logger used by the RestrictionManager.
+func (options) Logger(logger jaeger.Logger) Option {
+	return func(o *options) {
+		o.logger = logger
+	}
+}
+
+// HostPort creates an Option that sets the hostPort of the local agent that contains the baggage restrictions.
+func (options) HostPort(hostPort string) Option {
+	return func(o *options) {
+		o.hostPort = hostPort
+	}
+}
+
+// RefreshInterval creates an Option that sets how often the RestrictionManager will poll local agent for
+// the baggage restrictions.
+func (options) RefreshInterval(refreshInterval time.Duration) Option {
+	return func(o *options) {
+		o.refreshInterval = refreshInterval
+	}
+}
+
+func applyOptions(o ...Option) options {
+	opts := options{}
+	for _, option := range o {
+		option(&opts)
+	}
+	if opts.metrics == nil {
+		opts.metrics = jaeger.NewNullMetrics()
+	}
+	if opts.logger == nil {
+		opts.logger = jaeger.NullLogger
+	}
+	if opts.hostPort == "" {
+		opts.hostPort = defaultHostPort
+	}
+	if opts.refreshInterval == 0 {
+		opts.refreshInterval = defaultRefreshInterval
+	}
+	return opts
+}

vendor/github.com/uber/jaeger-client-go/internal/baggage/remote/restriction_manager.go

@@ -0,0 +1,163 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package remote
+
+import (
+	"fmt"
+	"net/url"
+	"sync"
+	"time"
+
+	"github.com/uber/jaeger-client-go/internal/baggage"
+	thrift "github.com/uber/jaeger-client-go/thrift-gen/baggage"
+	"github.com/uber/jaeger-client-go/utils"
+)
+
+type httpBaggageRestrictionManagerProxy struct {
+	url string
+}
+
+func newHTTPBaggageRestrictionManagerProxy(hostPort, serviceName string) *httpBaggageRestrictionManagerProxy {
+	v := url.Values{}
+	v.Set("service", serviceName)
+	return &httpBaggageRestrictionManagerProxy{
+		url: fmt.Sprintf("http://%s/baggageRestrictions?%s", hostPort, v.Encode()),
+	}
+}
+
+func (s *httpBaggageRestrictionManagerProxy) GetBaggageRestrictions(serviceName string) ([]*thrift.BaggageRestriction, error) {
+	var out []*thrift.BaggageRestriction
+	if err := utils.GetJSON(s.url, &out); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// RestrictionManager manages baggage restrictions by retrieving baggage restrictions from agent
+type RestrictionManager struct {
+	options
+
+	mux                sync.RWMutex
+	serviceName        string
+	restrictions       map[string]*baggage.Restriction
+	thriftProxy        thrift.BaggageRestrictionManager
+	pollStopped        sync.WaitGroup
+	stopPoll           chan struct{}
+	invalidRestriction *baggage.Restriction
+	validRestriction   *baggage.Restriction
+
+	// Determines if the manager has successfully retrieved baggage restrictions from agent
+	initialized bool
+}
+
+// NewRestrictionManager returns a BaggageRestrictionManager that polls the agent for the latest
+// baggage restrictions.
+func NewRestrictionManager(serviceName string, options ...Option) *RestrictionManager {
+	// TODO there is a developing use case where a single tracer can generate traces on behalf of many services.
+	// restrictionsMap will need to exist per service
+	opts := applyOptions(options...)
+	m := &RestrictionManager{
+		serviceName:        serviceName,
+		options:            opts,
+		restrictions:       make(map[string]*baggage.Restriction),
+		thriftProxy:        newHTTPBaggageRestrictionManagerProxy(opts.hostPort, serviceName),
+		stopPoll:           make(chan struct{}),
+		invalidRestriction: baggage.NewRestriction(false, 0),
+		validRestriction:   baggage.NewRestriction(true, defaultMaxValueLength),
+	}
+	m.pollStopped.Add(1)
+	go m.pollManager()
+	return m
+}
+
+// isReady returns true if the manager has retrieved baggage restrictions from the remote source.
+func (m *RestrictionManager) isReady() bool {
+	m.mux.RLock()
+	defer m.mux.RUnlock()
+	return m.initialized
+}
+
+// GetRestriction implements RestrictionManager#GetRestriction.
+func (m *RestrictionManager) GetRestriction(key string) *baggage.Restriction {
+	m.mux.RLock()
+	defer m.mux.RUnlock()
+	if !m.initialized {
+		if m.denyBaggageOnInitializationFailure {
+			return m.invalidRestriction
+		}
+		return m.validRestriction
+	}
+	if restriction, ok := m.restrictions[key]; ok {
+		return restriction
+	}
+	return m.invalidRestriction
+}
+
+// Close stops remote polling and closes the RemoteRestrictionManager.
+func (m *RestrictionManager) Close() error {
+	close(m.stopPoll)
+	m.pollStopped.Wait()
+	return nil
+}
+
+func (m *RestrictionManager) pollManager() {
+	defer m.pollStopped.Done()
+	// attempt to initialize baggage restrictions
+	if err := m.updateRestrictions(); err != nil {
+		m.logger.Error(fmt.Sprintf("Failed to initialize baggage restrictions: %s", err.Error()))
+	}
+	ticker := time.NewTicker(m.refreshInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			if err := m.updateRestrictions(); err != nil {
+				m.logger.Error(fmt.Sprintf("Failed to update baggage restrictions: %s", err.Error()))
+			}
+		case <-m.stopPoll:
+			return
+		}
+	}
+}
+
+func (m *RestrictionManager) updateRestrictions() error {
+	restrictions, err := m.thriftProxy.GetBaggageRestrictions(m.serviceName)
+	if err != nil {
+		m.metrics.BaggageRestrictionsUpdateFailure.Inc(1)
+		return err
+	}
+	newRestrictions := m.parseRestrictions(restrictions)
+	m.metrics.BaggageRestrictionsUpdateSuccess.Inc(1)
+	m.mux.Lock()
+	defer m.mux.Unlock()
+	m.initialized = true
+	m.restrictions = newRestrictions
+	return nil
+}
+
+func (m *RestrictionManager) parseRestrictions(restrictions []*thrift.BaggageRestriction) map[string]*baggage.Restriction {
+	setters := make(map[string]*baggage.Restriction, len(restrictions))
+	for _, restriction := range restrictions {
+		setters[restriction.BaggageKey] = baggage.NewRestriction(true, int(restriction.MaxValueLength))
+	}
+	return setters
+}

vendor/github.com/uber/jaeger-client-go/internal/baggage/restriction_manager.go

@@ -0,0 +1,74 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package baggage
+
+const (
+	defaultMaxValueLength = 2048
+)
+
+// Restriction determines whether a baggage key is allowed and contains any restrictions on the baggage value.
+type Restriction struct {
+	keyAllowed     bool
+	maxValueLength int
+}
+
+// NewRestriction returns a new Restriction.
+func NewRestriction(keyAllowed bool, maxValueLength int) *Restriction {
+	return &Restriction{
+		keyAllowed:     keyAllowed,
+		maxValueLength: maxValueLength,
+	}
+}
+
+// KeyAllowed returns whether the baggage key for this restriction is allowed.
+func (r *Restriction) KeyAllowed() bool {
+	return r.keyAllowed
+}
+
+// MaxValueLength returns the max length for the baggage value.
+func (r *Restriction) MaxValueLength() int {
+	return r.maxValueLength
+}
+
+// RestrictionManager keeps track of valid baggage keys and their restrictions.
+type RestrictionManager interface {
+	GetRestriction(key string) *Restriction
+}
+
+// DefaultRestrictionManager allows any baggage key.
+type DefaultRestrictionManager struct {
+	defaultRestriction *Restriction
+}
+
+// NewDefaultRestrictionManager returns a DefaultRestrictionManager.
+func NewDefaultRestrictionManager(maxValueLength int) *DefaultRestrictionManager {
+	if maxValueLength == 0 {
+		maxValueLength = defaultMaxValueLength
+	}
+	return &DefaultRestrictionManager{
+		defaultRestriction: &Restriction{keyAllowed: true, maxValueLength: maxValueLength},
+	}
+}
+
+// GetRestriction implements RestrictionManager#GetRestriction.
+func (m *DefaultRestrictionManager) GetRestriction(key string) *Restriction {
+	return m.defaultRestriction
+}

vendor/github.com/uber/jaeger-client-go/internal/spanlog/json.go

@@ -0,0 +1,87 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package spanlog
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/opentracing/opentracing-go/log"
+)
+
+type fieldsAsMap map[string]string
+
+// MaterializeWithJSON converts log Fields into JSON string
+// TODO refactor into pluggable materializer
+func MaterializeWithJSON(logFields []log.Field) ([]byte, error) {
+	fields := fieldsAsMap(make(map[string]string, len(logFields)))
+	for _, field := range logFields {
+		field.Marshal(fields)
+	}
+	if event, ok := fields["event"]; ok && len(fields) == 1 {
+		return []byte(event), nil
+	}
+	return json.Marshal(fields)
+}
+
+func (ml fieldsAsMap) EmitString(key, value string) {
+	ml[key] = value
+}
+
+func (ml fieldsAsMap) EmitBool(key string, value bool) {
+	ml[key] = fmt.Sprintf("%t", value)
+}
+
+func (ml fieldsAsMap) EmitInt(key string, value int) {
+	ml[key] = fmt.Sprintf("%d", value)
+}
+
+func (ml fieldsAsMap) EmitInt32(key string, value int32) {
+	ml[key] = fmt.Sprintf("%d", value)
+}
+
+func (ml fieldsAsMap) EmitInt64(key string, value int64) {
+	ml[key] = fmt.Sprintf("%d", value)
+}
+
+func (ml fieldsAsMap) EmitUint32(key string, value uint32) {
+	ml[key] = fmt.Sprintf("%d", value)
+}
+
+func (ml fieldsAsMap) EmitUint64(key string, value uint64) {
+	ml[key] = fmt.Sprintf("%d", value)
+}
+
+func (ml fieldsAsMap) EmitFloat32(key string, value float32) {
+	ml[key] = fmt.Sprintf("%f", value)
+}
+
+func (ml fieldsAsMap) EmitFloat64(key string, value float64) {
+	ml[key] = fmt.Sprintf("%f", value)
+}
+
+func (ml fieldsAsMap) EmitObject(key string, value interface{}) {
+	ml[key] = fmt.Sprintf("%+v", value)
+}
+
+func (ml fieldsAsMap) EmitLazyLogger(value log.LazyLogger) {
+	value(ml)
+}

vendor/github.com/uber/jaeger-client-go/interop.go

@@ -0,0 +1,61 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"github.com/opentracing/opentracing-go"
+)
+
+// TODO this file should not be needed after TChannel PR.
+
+type formatKey int
+
+// SpanContextFormat is a constant used as OpenTracing Format.
+// Requires *SpanContext as carrier.
+// This format is intended for interop with TChannel or other Zipkin-like tracers.
+const SpanContextFormat formatKey = iota
+
+type jaegerTraceContextPropagator struct {
+	tracer *Tracer
+}
+
+func (p *jaegerTraceContextPropagator) Inject(
+	ctx SpanContext,
+	abstractCarrier interface{},
+) error {
+	carrier, ok := abstractCarrier.(*SpanContext)
+	if !ok {
+		return opentracing.ErrInvalidCarrier
+	}
+
+	carrier.CopyFrom(&ctx)
+	return nil
+}
+
+func (p *jaegerTraceContextPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
+	carrier, ok := abstractCarrier.(*SpanContext)
+	if !ok {
+		return emptyContext, opentracing.ErrInvalidCarrier
+	}
+	ctx := new(SpanContext)
+	ctx.CopyFrom(carrier)
+	return *ctx, nil
+}

vendor/github.com/uber/jaeger-client-go/jaeger_tag.go

@@ -0,0 +1,90 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"fmt"
+
+	"github.com/opentracing/opentracing-go/log"
+
+	j "github.com/uber/jaeger-client-go/thrift-gen/jaeger"
+)
+
+type tags []*j.Tag
+
+// ConvertLogsToJaegerTags converts log Fields into jaeger tags.
+func ConvertLogsToJaegerTags(logFields []log.Field) []*j.Tag {
+	fields := tags(make([]*j.Tag, 0, len(logFields)))
+	for _, field := range logFields {
+		field.Marshal(&fields)
+	}
+	return fields
+}
+
+func (t *tags) EmitString(key, value string) {
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_STRING, VStr: &value})
+}
+
+func (t *tags) EmitBool(key string, value bool) {
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_BOOL, VBool: &value})
+}
+
+func (t *tags) EmitInt(key string, value int) {
+	vLong := int64(value)
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_LONG, VLong: &vLong})
+}
+
+func (t *tags) EmitInt32(key string, value int32) {
+	vLong := int64(value)
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_LONG, VLong: &vLong})
+}
+
+func (t *tags) EmitInt64(key string, value int64) {
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_LONG, VLong: &value})
+}
+
+func (t *tags) EmitUint32(key string, value uint32) {
+	vLong := int64(value)
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_LONG, VLong: &vLong})
+}
+
+func (t *tags) EmitUint64(key string, value uint64) {
+	vLong := int64(value)
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_LONG, VLong: &vLong})
+}
+
+func (t *tags) EmitFloat32(key string, value float32) {
+	vDouble := float64(value)
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_DOUBLE, VDouble: &vDouble})
+}
+
+func (t *tags) EmitFloat64(key string, value float64) {
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_DOUBLE, VDouble: &value})
+}
+
+func (t *tags) EmitObject(key string, value interface{}) {
+	vStr := fmt.Sprintf("%+v", value)
+	*t = append(*t, &j.Tag{Key: key, VType: j.TagType_STRING, VStr: &vStr})
+}
+
+func (t *tags) EmitLazyLogger(value log.LazyLogger) {
+	value(t)
+}

vendor/github.com/uber/jaeger-client-go/jaeger_thrift_span.go

@@ -0,0 +1,178 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"time"
+
+	"github.com/opentracing/opentracing-go"
+
+	j "github.com/uber/jaeger-client-go/thrift-gen/jaeger"
+	"github.com/uber/jaeger-client-go/utils"
+)
+
+// BuildJaegerThrift builds jaeger span based on internal span.
+func BuildJaegerThrift(span *Span) *j.Span {
+	startTime := utils.TimeToMicrosecondsSinceEpochInt64(span.startTime)
+	duration := span.duration.Nanoseconds() / int64(time.Microsecond)
+	jaegerSpan := &j.Span{
+		TraceIdLow:    int64(span.context.traceID.Low),
+		TraceIdHigh:   int64(span.context.traceID.High),
+		SpanId:        int64(span.context.spanID),
+		ParentSpanId:  int64(span.context.parentID),
+		OperationName: span.operationName,
+		Flags:         int32(span.context.flags),
+		StartTime:     startTime,
+		Duration:      duration,
+		Tags:          buildTags(span.tags),
+		Logs:          buildLogs(span.logs),
+		References:    buildReferences(span.references),
+	}
+	return jaegerSpan
+}
+
+// BuildJaegerProcessThrift creates a thrift Process type.
+func BuildJaegerProcessThrift(span *Span) *j.Process {
+	return buildJaegerProcessThrift(span.tracer)
+}
+
+func buildJaegerProcessThrift(tracer *Tracer) *j.Process {
+	process := &j.Process{
+		ServiceName: tracer.serviceName,
+		Tags:        buildTags(tracer.tags),
+	}
+	return process
+}
+
+func buildTags(tags []Tag) []*j.Tag {
+	jTags := make([]*j.Tag, 0, len(tags))
+	for _, tag := range tags {
+		jTag := buildTag(&tag)
+		jTags = append(jTags, jTag)
+	}
+	return jTags
+}
+
+func buildLogs(logs []opentracing.LogRecord) []*j.Log {
+	jLogs := make([]*j.Log, 0, len(logs))
+	for _, log := range logs {
+		jLog := &j.Log{
+			Timestamp: utils.TimeToMicrosecondsSinceEpochInt64(log.Timestamp),
+			Fields:    ConvertLogsToJaegerTags(log.Fields),
+		}
+		jLogs = append(jLogs, jLog)
+	}
+	return jLogs
+}
+
+func buildTag(tag *Tag) *j.Tag {
+	jTag := &j.Tag{Key: tag.key}
+	switch value := tag.value.(type) {
+	case string:
+		vStr := truncateString(value)
+		jTag.VStr = &vStr
+		jTag.VType = j.TagType_STRING
+	case []byte:
+		if len(value) > maxAnnotationLength {
+			value = value[:maxAnnotationLength]
+		}
+		jTag.VBinary = value
+		jTag.VType = j.TagType_BINARY
+	case int:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case uint:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case int8:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case uint8:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case int16:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case uint16:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case int32:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case uint32:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case int64:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case uint64:
+		vLong := int64(value)
+		jTag.VLong = &vLong
+		jTag.VType = j.TagType_LONG
+	case float32:
+		vDouble := float64(value)
+		jTag.VDouble = &vDouble
+		jTag.VType = j.TagType_DOUBLE
+	case float64:
+		vDouble := float64(value)
+		jTag.VDouble = &vDouble
+		jTag.VType = j.TagType_DOUBLE
+	case bool:
+		vBool := value
+		jTag.VBool = &vBool
+		jTag.VType = j.TagType_BOOL
+	default:
+		vStr := truncateString(stringify(value))
+		jTag.VStr = &vStr
+		jTag.VType = j.TagType_STRING
+	}
+	return jTag
+}
+
+func buildReferences(references []Reference) []*j.SpanRef {
+	retMe := make([]*j.SpanRef, 0, len(references))
+	for _, ref := range references {
+		if ref.Type == opentracing.ChildOfRef {
+			retMe = append(retMe, spanRef(ref.Context, j.SpanRefType_CHILD_OF))
+		} else if ref.Type == opentracing.FollowsFromRef {
+			retMe = append(retMe, spanRef(ref.Context, j.SpanRefType_FOLLOWS_FROM))
+		}
+	}
+	return retMe
+}
+
+func spanRef(ctx SpanContext, refType j.SpanRefType) *j.SpanRef {
+	return &j.SpanRef{
+		RefType:     refType,
+		TraceIdLow:  int64(ctx.traceID.Low),
+		TraceIdHigh: int64(ctx.traceID.High),
+		SpanId:      int64(ctx.spanID),
+	}
+}

vendor/github.com/uber/jaeger-client-go/log/logger.go

@@ -0,0 +1,57 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package log
+
+import "log"
+
+// Logger provides an abstract interface for logging from Reporters.
+// Applications can provide their own implementation of this interface to adapt
+// reporters logging to whatever logging library they prefer (stdlib log,
+// logrus, go-logging, etc).
+type Logger interface {
+	// Error logs a message at error priority
+	Error(msg string)
+
+	// Infof logs a message at info priority
+	Infof(msg string, args ...interface{})
+}
+
+// StdLogger is implementation of the Logger interface that delegates to default `log` package
+var StdLogger = &stdLogger{}
+
+type stdLogger struct{}
+
+func (l *stdLogger) Error(msg string) {
+	log.Printf("ERROR: %s", msg)
+}
+
+// Infof logs a message at info priority
+func (l *stdLogger) Infof(msg string, args ...interface{}) {
+	log.Printf(msg, args...)
+}
+
+// NullLogger is implementation of the Logger interface that delegates to default `log` package
+var NullLogger = &nullLogger{}
+
+type nullLogger struct{}
+
+func (l *nullLogger) Error(msg string)                      {}
+func (l *nullLogger) Infof(msg string, args ...interface{}) {}

vendor/github.com/uber/jaeger-client-go/logger.go

@@ -0,0 +1,59 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import "log"
+
+// NB This will be deprecated in 3.0.0, please use jaeger-client-go/log/logger instead.
+
+// Logger provides an abstract interface for logging from Reporters.
+// Applications can provide their own implementation of this interface to adapt
+// reporters logging to whatever logging library they prefer (stdlib log,
+// logrus, go-logging, etc).
+type Logger interface {
+	// Error logs a message at error priority
+	Error(msg string)
+
+	// Infof logs a message at info priority
+	Infof(msg string, args ...interface{})
+}
+
+// StdLogger is implementation of the Logger interface that delegates to default `log` package
+var StdLogger = &stdLogger{}
+
+type stdLogger struct{}
+
+func (l *stdLogger) Error(msg string) {
+	log.Printf("ERROR: %s", msg)
+}
+
+// Infof logs a message at info priority
+func (l *stdLogger) Infof(msg string, args ...interface{}) {
+	log.Printf(msg, args...)
+}
+
+// NullLogger is implementation of the Logger interface that delegates to default `log` package
+var NullLogger = &nullLogger{}
+
+type nullLogger struct{}
+
+func (l *nullLogger) Error(msg string)                      {}
+func (l *nullLogger) Infof(msg string, args ...interface{}) {}

vendor/github.com/uber/jaeger-client-go/metrics.go

@@ -0,0 +1,106 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"github.com/uber/jaeger-lib/metrics"
+)
+
+// Metrics is a container of all stats emitted by Jaeger tracer.
+type Metrics struct {
+	// Number of traces started by this tracer as sampled
+	TracesStartedSampled metrics.Counter `metric:"traces" tags:"state=started,sampled=y"`
+
+	// Number of traces started by this tracer as not sampled
+	TracesStartedNotSampled metrics.Counter `metric:"traces" tags:"state=started,sampled=n"`
+
+	// Number of externally started sampled traces this tracer joined
+	TracesJoinedSampled metrics.Counter `metric:"traces" tags:"state=joined,sampled=y"`
+
+	// Number of externally started not-sampled traces this tracer joined
+	TracesJoinedNotSampled metrics.Counter `metric:"traces" tags:"state=joined,sampled=n"`
+
+	// Number of sampled spans started by this tracer
+	SpansStarted metrics.Counter `metric:"spans" tags:"group=lifecycle,state=started"`
+
+	// Number of sampled spans finished by this tracer
+	SpansFinished metrics.Counter `metric:"spans" tags:"group=lifecycle,state=finished"`
+
+	// Number of sampled spans started by this tracer
+	SpansSampled metrics.Counter `metric:"spans" tags:"group=sampling,sampled=y"`
+
+	// Number of not-sampled spans started by this tracer
+	SpansNotSampled metrics.Counter `metric:"spans" tags:"group=sampling,sampled=n"`
+
+	// Number of errors decoding tracing context
+	DecodingErrors metrics.Counter `metric:"decoding-errors"`
+
+	// Number of spans successfully reported
+	ReporterSuccess metrics.Counter `metric:"reporter-spans" tags:"state=success"`
+
+	// Number of spans in failed attempts to report
+	ReporterFailure metrics.Counter `metric:"reporter-spans" tags:"state=failure"`
+
+	// Number of spans dropped due to internal queue overflow
+	ReporterDropped metrics.Counter `metric:"reporter-spans" tags:"state=dropped"`
+
+	// Current number of spans in the reporter queue
+	ReporterQueueLength metrics.Gauge `metric:"reporter-queue"`
+
+	// Number of times the Sampler succeeded to retrieve sampling strategy
+	SamplerRetrieved metrics.Counter `metric:"sampler" tags:"state=retrieved"`
+
+	// Number of times the Sampler succeeded to retrieve and update sampling strategy
+	SamplerUpdated metrics.Counter `metric:"sampler" tags:"state=updated"`
+
+	// Number of times the Sampler failed to update sampling strategy
+	SamplerUpdateFailure metrics.Counter `metric:"sampler" tags:"state=failure,phase=updating"`
+
+	// Number of times the Sampler failed to retrieve sampling strategy
+	SamplerQueryFailure metrics.Counter `metric:"sampler" tags:"state=failure,phase=query"`
+
+	// Number of times baggage was successfully written or updated on spans.
+	BaggageUpdateSuccess metrics.Counter `metric:"baggage-update" tags:"result=ok"`
+
+	// Number of times baggage failed to write or update on spans.
+	BaggageUpdateFailure metrics.Counter `metric:"baggage-update" tags:"result=err"`
+
+	// Number of times baggage was truncated as per baggage restrictions.
+	BaggageTruncate metrics.Counter `metric:"baggage-truncate"`
+
+	// Number of times baggage restrictions were successfully updated.
+	BaggageRestrictionsUpdateSuccess metrics.Counter `metric:"baggage-restrictions-update" tags:"result=ok"`
+
+	// Number of times baggage restrictions failed to update.
+	BaggageRestrictionsUpdateFailure metrics.Counter `metric:"baggage-restrictions-update" tags:"result=err"`
+}
+
+// NewMetrics creates a new Metrics struct and initializes it.
+func NewMetrics(factory metrics.Factory, globalTags map[string]string) *Metrics {
+	m := &Metrics{}
+	metrics.Init(m, factory.Namespace("jaeger", nil), globalTags)
+	return m
+}
+
+// NewNullMetrics creates a new Metrics struct that won't report any metrics.
+func NewNullMetrics() *Metrics {
+	return NewMetrics(metrics.NullFactory, nil)
+}

vendor/github.com/uber/jaeger-client-go/observer.go

@@ -0,0 +1,94 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import opentracing "github.com/opentracing/opentracing-go"
+
+// Observer can be registered with the Tracer to receive notifications about
+// new Spans.
+//
+// Deprecated: use jaeger.ContribObserver instead.
+type Observer interface {
+	OnStartSpan(operationName string, options opentracing.StartSpanOptions) SpanObserver
+}
+
+// SpanObserver is created by the Observer and receives notifications about
+// other Span events.
+//
+// Deprecated: use jaeger.ContribSpanObserver instead.
+type SpanObserver interface {
+	OnSetOperationName(operationName string)
+	OnSetTag(key string, value interface{})
+	OnFinish(options opentracing.FinishOptions)
+}
+
+// compositeObserver is a dispatcher to other observers
+type compositeObserver struct {
+	observers []ContribObserver
+}
+
+// compositeSpanObserver is a dispatcher to other span observers
+type compositeSpanObserver struct {
+	observers []ContribSpanObserver
+}
+
+// noopSpanObserver is used when there are no observers registered
+// on the Tracer or none of them returns span observers from OnStartSpan.
+var noopSpanObserver = &compositeSpanObserver{}
+
+func (o *compositeObserver) append(contribObserver ContribObserver) {
+	o.observers = append(o.observers, contribObserver)
+}
+
+func (o *compositeObserver) OnStartSpan(sp opentracing.Span, operationName string, options opentracing.StartSpanOptions) ContribSpanObserver {
+	var spanObservers []ContribSpanObserver
+	for _, obs := range o.observers {
+		spanObs, ok := obs.OnStartSpan(sp, operationName, options)
+		if ok {
+			if spanObservers == nil {
+				spanObservers = make([]ContribSpanObserver, 0, len(o.observers))
+			}
+			spanObservers = append(spanObservers, spanObs)
+		}
+	}
+	if len(spanObservers) == 0 {
+		return noopSpanObserver
+	}
+	return &compositeSpanObserver{observers: spanObservers}
+}
+
+func (o *compositeSpanObserver) OnSetOperationName(operationName string) {
+	for _, obs := range o.observers {
+		obs.OnSetOperationName(operationName)
+	}
+}
+
+func (o *compositeSpanObserver) OnSetTag(key string, value interface{}) {
+	for _, obs := range o.observers {
+		obs.OnSetTag(key, value)
+	}
+}
+
+func (o *compositeSpanObserver) OnFinish(options opentracing.FinishOptions) {
+	for _, obs := range o.observers {
+		obs.OnFinish(options)
+	}
+}

vendor/github.com/uber/jaeger-client-go/propagation.go

@@ -0,0 +1,306 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"log"
+	"net/url"
+	"strings"
+	"sync"
+
+	opentracing "github.com/opentracing/opentracing-go"
+)
+
+// Injector is responsible for injecting SpanContext instances in a manner suitable
+// for propagation via a format-specific "carrier" object. Typically the
+// injection will take place across an RPC boundary, but message queues and
+// other IPC mechanisms are also reasonable places to use an Injector.
+type Injector interface {
+	// Inject takes `SpanContext` and injects it into `carrier`. The actual type
+	// of `carrier` depends on the `format` passed to `Tracer.Inject()`.
+	//
+	// Implementations may return opentracing.ErrInvalidCarrier or any other
+	// implementation-specific error if injection fails.
+	Inject(ctx SpanContext, carrier interface{}) error
+}
+
+// Extractor is responsible for extracting SpanContext instances from a
+// format-specific "carrier" object. Typically the extraction will take place
+// on the server side of an RPC boundary, but message queues and other IPC
+// mechanisms are also reasonable places to use an Extractor.
+type Extractor interface {
+	// Extract decodes a SpanContext instance from the given `carrier`,
+	// or (nil, opentracing.ErrSpanContextNotFound) if no context could
+	// be found in the `carrier`.
+	Extract(carrier interface{}) (SpanContext, error)
+}
+
+type textMapPropagator struct {
+	headerKeys  *HeadersConfig
+	metrics     Metrics
+	encodeValue func(string) string
+	decodeValue func(string) string
+}
+
+func newTextMapPropagator(headerKeys *HeadersConfig, metrics Metrics) *textMapPropagator {
+	return &textMapPropagator{
+		headerKeys: headerKeys,
+		metrics:    metrics,
+		encodeValue: func(val string) string {
+			return val
+		},
+		decodeValue: func(val string) string {
+			return val
+		},
+	}
+}
+
+func newHTTPHeaderPropagator(headerKeys *HeadersConfig, metrics Metrics) *textMapPropagator {
+	return &textMapPropagator{
+		headerKeys: headerKeys,
+		metrics:    metrics,
+		encodeValue: func(val string) string {
+			return url.QueryEscape(val)
+		},
+		decodeValue: func(val string) string {
+			// ignore decoding errors, cannot do anything about them
+			if v, err := url.QueryUnescape(val); err == nil {
+				return v
+			}
+			return val
+		},
+	}
+}
+
+type binaryPropagator struct {
+	tracer  *Tracer
+	buffers sync.Pool
+}
+
+func newBinaryPropagator(tracer *Tracer) *binaryPropagator {
+	return &binaryPropagator{
+		tracer:  tracer,
+		buffers: sync.Pool{New: func() interface{} { return &bytes.Buffer{} }},
+	}
+}
+
+func (p *textMapPropagator) Inject(
+	sc SpanContext,
+	abstractCarrier interface{},
+) error {
+	textMapWriter, ok := abstractCarrier.(opentracing.TextMapWriter)
+	if !ok {
+		return opentracing.ErrInvalidCarrier
+	}
+
+	// Do not encode the string with trace context to avoid accidental double-encoding
+	// if people are using opentracing < 0.10.0. Our colon-separated representation
+	// of the trace context is already safe for HTTP headers.
+	textMapWriter.Set(p.headerKeys.TraceContextHeaderName, sc.String())
+	for k, v := range sc.baggage {
+		safeKey := p.addBaggageKeyPrefix(k)
+		safeVal := p.encodeValue(v)
+		textMapWriter.Set(safeKey, safeVal)
+	}
+	return nil
+}
+
+func (p *textMapPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
+	textMapReader, ok := abstractCarrier.(opentracing.TextMapReader)
+	if !ok {
+		return emptyContext, opentracing.ErrInvalidCarrier
+	}
+	var ctx SpanContext
+	var baggage map[string]string
+	err := textMapReader.ForeachKey(func(rawKey, value string) error {
+		key := strings.ToLower(rawKey) // TODO not necessary for plain TextMap
+		if key == p.headerKeys.TraceContextHeaderName {
+			var err error
+			safeVal := p.decodeValue(value)
+			if ctx, err = ContextFromString(safeVal); err != nil {
+				return err
+			}
+		} else if key == p.headerKeys.JaegerDebugHeader {
+			ctx.debugID = p.decodeValue(value)
+		} else if key == p.headerKeys.JaegerBaggageHeader {
+			if baggage == nil {
+				baggage = make(map[string]string)
+			}
+			for k, v := range p.parseCommaSeparatedMap(value) {
+				baggage[k] = v
+			}
+		} else if strings.HasPrefix(key, p.headerKeys.TraceBaggageHeaderPrefix) {
+			if baggage == nil {
+				baggage = make(map[string]string)
+			}
+			safeKey := p.removeBaggageKeyPrefix(key)
+			safeVal := p.decodeValue(value)
+			baggage[safeKey] = safeVal
+		}
+		return nil
+	})
+	if err != nil {
+		p.metrics.DecodingErrors.Inc(1)
+		return emptyContext, err
+	}
+	if !ctx.traceID.IsValid() && ctx.debugID == "" && len(baggage) == 0 {
+		return emptyContext, opentracing.ErrSpanContextNotFound
+	}
+	ctx.baggage = baggage
+	return ctx, nil
+}
+
+func (p *binaryPropagator) Inject(
+	sc SpanContext,
+	abstractCarrier interface{},
+) error {
+	carrier, ok := abstractCarrier.(io.Writer)
+	if !ok {
+		return opentracing.ErrInvalidCarrier
+	}
+
+	// Handle the tracer context
+	if err := binary.Write(carrier, binary.BigEndian, sc.traceID); err != nil {
+		return err
+	}
+	if err := binary.Write(carrier, binary.BigEndian, sc.spanID); err != nil {
+		return err
+	}
+	if err := binary.Write(carrier, binary.BigEndian, sc.parentID); err != nil {
+		return err
+	}
+	if err := binary.Write(carrier, binary.BigEndian, sc.flags); err != nil {
+		return err
+	}
+
+	// Handle the baggage items
+	if err := binary.Write(carrier, binary.BigEndian, int32(len(sc.baggage))); err != nil {
+		return err
+	}
+	for k, v := range sc.baggage {
+		if err := binary.Write(carrier, binary.BigEndian, int32(len(k))); err != nil {
+			return err
+		}
+		io.WriteString(carrier, k)
+		if err := binary.Write(carrier, binary.BigEndian, int32(len(v))); err != nil {
+			return err
+		}
+		io.WriteString(carrier, v)
+	}
+
+	return nil
+}
+
+func (p *binaryPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
+	carrier, ok := abstractCarrier.(io.Reader)
+	if !ok {
+		return emptyContext, opentracing.ErrInvalidCarrier
+	}
+	var ctx SpanContext
+
+	if err := binary.Read(carrier, binary.BigEndian, &ctx.traceID); err != nil {
+		return emptyContext, opentracing.ErrSpanContextCorrupted
+	}
+	if err := binary.Read(carrier, binary.BigEndian, &ctx.spanID); err != nil {
+		return emptyContext, opentracing.ErrSpanContextCorrupted
+	}
+	if err := binary.Read(carrier, binary.BigEndian, &ctx.parentID); err != nil {
+		return emptyContext, opentracing.ErrSpanContextCorrupted
+	}
+	if err := binary.Read(carrier, binary.BigEndian, &ctx.flags); err != nil {
+		return emptyContext, opentracing.ErrSpanContextCorrupted
+	}
+
+	// Handle the baggage items
+	var numBaggage int32
+	if err := binary.Read(carrier, binary.BigEndian, &numBaggage); err != nil {
+		return emptyContext, opentracing.ErrSpanContextCorrupted
+	}
+	if iNumBaggage := int(numBaggage); iNumBaggage > 0 {
+		ctx.baggage = make(map[string]string, iNumBaggage)
+		buf := p.buffers.Get().(*bytes.Buffer)
+		defer p.buffers.Put(buf)
+
+		var keyLen, valLen int32
+		for i := 0; i < iNumBaggage; i++ {
+			if err := binary.Read(carrier, binary.BigEndian, &keyLen); err != nil {
+				return emptyContext, opentracing.ErrSpanContextCorrupted
+			}
+			buf.Reset()
+			buf.Grow(int(keyLen))
+			if n, err := io.CopyN(buf, carrier, int64(keyLen)); err != nil || int32(n) != keyLen {
+				return emptyContext, opentracing.ErrSpanContextCorrupted
+			}
+			key := buf.String()
+
+			if err := binary.Read(carrier, binary.BigEndian, &valLen); err != nil {
+				return emptyContext, opentracing.ErrSpanContextCorrupted
+			}
+			buf.Reset()
+			buf.Grow(int(valLen))
+			if n, err := io.CopyN(buf, carrier, int64(valLen)); err != nil || int32(n) != valLen {
+				return emptyContext, opentracing.ErrSpanContextCorrupted
+			}
+			ctx.baggage[key] = buf.String()
+		}
+	}
+
+	return ctx, nil
+}
+
+// Converts a comma separated key value pair list into a map
+// e.g. key1=value1, key2=value2, key3 = value3
+// is converted to map[string]string { "key1" : "value1",
+//                                     "key2" : "value2",
+//                                     "key3" : "value3" }
+func (p *textMapPropagator) parseCommaSeparatedMap(value string) map[string]string {
+	baggage := make(map[string]string)
+	value, err := url.QueryUnescape(value)
+	if err != nil {
+		log.Printf("Unable to unescape %s, %v", value, err)
+		return baggage
+	}
+	for _, kvpair := range strings.Split(value, ",") {
+		kv := strings.Split(strings.TrimSpace(kvpair), "=")
+		if len(kv) == 2 {
+			baggage[kv[0]] = kv[1]
+		} else {
+			log.Printf("Malformed value passed in for %s", p.headerKeys.JaegerBaggageHeader)
+		}
+	}
+	return baggage
+}
+
+// Converts a baggage item key into an http header format,
+// by prepending TraceBaggageHeaderPrefix and encoding the key string
+func (p *textMapPropagator) addBaggageKeyPrefix(key string) string {
+	// TODO encodeBaggageKeyAsHeader add caching and escaping
+	return fmt.Sprintf("%v%v", p.headerKeys.TraceBaggageHeaderPrefix, key)
+}
+
+func (p *textMapPropagator) removeBaggageKeyPrefix(key string) string {
+	// TODO decodeBaggageHeaderKey add caching and escaping
+	return key[len(p.headerKeys.TraceBaggageHeaderPrefix):]
+}

vendor/github.com/uber/jaeger-client-go/reference.go

@@ -0,0 +1,29 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import "github.com/opentracing/opentracing-go"
+
+// Reference represents a causal reference to other Spans (via their SpanContext).
+type Reference struct {
+	Type    opentracing.SpanReferenceType
+	Context SpanContext
+}

vendor/github.com/uber/jaeger-client-go/reporter.go

@@ -0,0 +1,267 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/opentracing/opentracing-go"
+
+	"github.com/uber/jaeger-client-go/log"
+)
+
+// Reporter is called by the tracer when a span is completed to report the span to the tracing collector.
+type Reporter interface {
+	// Report submits a new span to collectors, possibly asynchronously and/or with buffering.
+	Report(span *Span)
+
+	// Close does a clean shutdown of the reporter, flushing any traces that may be buffered in memory.
+	Close()
+}
+
+// ------------------------------
+
+type nullReporter struct{}
+
+// NewNullReporter creates a no-op reporter that ignores all reported spans.
+func NewNullReporter() Reporter {
+	return &nullReporter{}
+}
+
+// Report implements Report() method of Reporter by doing nothing.
+func (r *nullReporter) Report(span *Span) {
+	// no-op
+}
+
+// Close implements Close() method of Reporter by doing nothing.
+func (r *nullReporter) Close() {
+	// no-op
+}
+
+// ------------------------------
+
+type loggingReporter struct {
+	logger Logger
+}
+
+// NewLoggingReporter creates a reporter that logs all reported spans to provided logger.
+func NewLoggingReporter(logger Logger) Reporter {
+	return &loggingReporter{logger}
+}
+
+// Report implements Report() method of Reporter by logging the span to the logger.
+func (r *loggingReporter) Report(span *Span) {
+	r.logger.Infof("Reporting span %+v", span)
+}
+
+// Close implements Close() method of Reporter by doing nothing.
+func (r *loggingReporter) Close() {
+	// no-op
+}
+
+// ------------------------------
+
+// InMemoryReporter is used for testing, and simply collects spans in memory.
+type InMemoryReporter struct {
+	spans []opentracing.Span
+	lock  sync.Mutex
+}
+
+// NewInMemoryReporter creates a reporter that stores spans in memory.
+// NOTE: the Tracer should be created with options.PoolSpans = false.
+func NewInMemoryReporter() *InMemoryReporter {
+	return &InMemoryReporter{
+		spans: make([]opentracing.Span, 0, 10),
+	}
+}
+
+// Report implements Report() method of Reporter by storing the span in the buffer.
+func (r *InMemoryReporter) Report(span *Span) {
+	r.lock.Lock()
+	r.spans = append(r.spans, span)
+	r.lock.Unlock()
+}
+
+// Close implements Close() method of Reporter by doing nothing.
+func (r *InMemoryReporter) Close() {
+	// no-op
+}
+
+// SpansSubmitted returns the number of spans accumulated in the buffer.
+func (r *InMemoryReporter) SpansSubmitted() int {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+	return len(r.spans)
+}
+
+// GetSpans returns accumulated spans as a copy of the buffer.
+func (r *InMemoryReporter) GetSpans() []opentracing.Span {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+	copied := make([]opentracing.Span, len(r.spans))
+	copy(copied, r.spans)
+	return copied
+}
+
+// Reset clears all accumulated spans.
+func (r *InMemoryReporter) Reset() {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+	r.spans = nil
+}
+
+// ------------------------------
+
+type compositeReporter struct {
+	reporters []Reporter
+}
+
+// NewCompositeReporter creates a reporter that ignores all reported spans.
+func NewCompositeReporter(reporters ...Reporter) Reporter {
+	return &compositeReporter{reporters: reporters}
+}
+
+// Report implements Report() method of Reporter by delegating to each underlying reporter.
+func (r *compositeReporter) Report(span *Span) {
+	for _, reporter := range r.reporters {
+		reporter.Report(span)
+	}
+}
+
+// Close implements Close() method of Reporter by closing each underlying reporter.
+func (r *compositeReporter) Close() {
+	for _, reporter := range r.reporters {
+		reporter.Close()
+	}
+}
+
+// ------------------------------
+
+const (
+	defaultQueueSize           = 100
+	defaultBufferFlushInterval = 10 * time.Second
+)
+
+type remoteReporter struct {
+	// must be first in the struct because `sync/atomic` expects 64-bit alignment.
+	// Cf. https://github.com/uber/jaeger-client-go/issues/155, https://goo.gl/zW7dgq
+	queueLength int64
+
+	reporterOptions
+	sender       Transport
+	queue        chan *Span
+	queueDrained sync.WaitGroup
+	flushSignal  chan *sync.WaitGroup
+}
+
+// NewRemoteReporter creates a new reporter that sends spans out of process by means of Sender
+func NewRemoteReporter(sender Transport, opts ...ReporterOption) Reporter {
+	options := reporterOptions{}
+	for _, option := range opts {
+		option(&options)
+	}
+	if options.bufferFlushInterval <= 0 {
+		options.bufferFlushInterval = defaultBufferFlushInterval
+	}
+	if options.logger == nil {
+		options.logger = log.NullLogger
+	}
+	if options.metrics == nil {
+		options.metrics = NewNullMetrics()
+	}
+	if options.queueSize <= 0 {
+		options.queueSize = defaultQueueSize
+	}
+	reporter := &remoteReporter{
+		reporterOptions: options,
+		sender:          sender,
+		flushSignal:     make(chan *sync.WaitGroup),
+		queue:           make(chan *Span, options.queueSize),
+	}
+	go reporter.processQueue()
+	return reporter
+}
+
+// Report implements Report() method of Reporter.
+// It passes the span to a background go-routine for submission to Jaeger.
+func (r *remoteReporter) Report(span *Span) {
+	select {
+	case r.queue <- span:
+		atomic.AddInt64(&r.queueLength, 1)
+	default:
+		r.metrics.ReporterDropped.Inc(1)
+	}
+}
+
+// Close implements Close() method of Reporter by waiting for the queue to be drained.
+func (r *remoteReporter) Close() {
+	r.queueDrained.Add(1)
+	close(r.queue)
+	r.queueDrained.Wait()
+	r.sender.Close()
+}
+
+// processQueue reads spans from the queue, converts them to Thrift, and stores them in an internal buffer.
+// When the buffer length reaches batchSize, it is flushed by submitting the accumulated spans to Jaeger.
+// Buffer also gets flushed automatically every batchFlushInterval seconds, just in case the tracer stopped
+// reporting new spans.
+func (r *remoteReporter) processQueue() {
+	timer := time.NewTicker(r.bufferFlushInterval)
+	for {
+		select {
+		case span, ok := <-r.queue:
+			if ok {
+				atomic.AddInt64(&r.queueLength, -1)
+				if flushed, err := r.sender.Append(span); err != nil {
+					r.metrics.ReporterFailure.Inc(int64(flushed))
+					r.logger.Error(err.Error())
+				} else if flushed > 0 {
+					r.metrics.ReporterSuccess.Inc(int64(flushed))
+					// to reduce the number of gauge stats, we only emit queue length on flush
+					r.metrics.ReporterQueueLength.Update(atomic.LoadInt64(&r.queueLength))
+				}
+			} else {
+				// queue closed
+				timer.Stop()
+				r.flush()
+				r.queueDrained.Done()
+				return
+			}
+		case <-timer.C:
+			r.flush()
+		case wg := <-r.flushSignal: // for testing
+			r.flush()
+			wg.Done()
+		}
+	}
+}
+
+// flush causes the Sender to flush its accumulated spans and clear the buffer
+func (r *remoteReporter) flush() {
+	if flushed, err := r.sender.Flush(); err != nil {
+		r.metrics.ReporterFailure.Inc(int64(flushed))
+		r.logger.Error(err.Error())
+	} else if flushed > 0 {
+		r.metrics.ReporterSuccess.Inc(int64(flushed))
+	}
+}

vendor/github.com/uber/jaeger-client-go/reporter_options.go

@@ -0,0 +1,75 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"time"
+)
+
+// ReporterOption is a function that sets some option on the reporter.
+type ReporterOption func(c *reporterOptions)
+
+// ReporterOptions is a factory for all available ReporterOption's
+var ReporterOptions reporterOptions
+
+// reporterOptions control behavior of the reporter.
+type reporterOptions struct {
+	// queueSize is the size of internal queue where reported spans are stored before they are processed in the background
+	queueSize int
+	// bufferFlushInterval is how often the buffer is force-flushed, even if it's not full
+	bufferFlushInterval time.Duration
+	// logger is used to log errors of span submissions
+	logger Logger
+	// metrics is used to record runtime stats
+	metrics *Metrics
+}
+
+// QueueSize creates a ReporterOption that sets the size of the internal queue where
+// spans are stored before they are processed.
+func (reporterOptions) QueueSize(queueSize int) ReporterOption {
+	return func(r *reporterOptions) {
+		r.queueSize = queueSize
+	}
+}
+
+// Metrics creates a ReporterOption that initializes Metrics in the reporter,
+// which is used to record runtime statistics.
+func (reporterOptions) Metrics(metrics *Metrics) ReporterOption {
+	return func(r *reporterOptions) {
+		r.metrics = metrics
+	}
+}
+
+// BufferFlushInterval creates a ReporterOption that sets how often the queue
+// is force-flushed.
+func (reporterOptions) BufferFlushInterval(bufferFlushInterval time.Duration) ReporterOption {
+	return func(r *reporterOptions) {
+		r.bufferFlushInterval = bufferFlushInterval
+	}
+}
+
+// Logger creates a ReporterOption that initializes the logger used to log
+// errors of span submissions.
+func (reporterOptions) Logger(logger Logger) ReporterOption {
+	return func(r *reporterOptions) {
+		r.logger = logger
+	}
+}

vendor/github.com/uber/jaeger-client-go/rpcmetrics/README.md

@@ -0,0 +1,5 @@
+An Observer that can be used to emit RPC metrics
+================================================
+
+It can be attached to the tracer during tracer construction.
+See `ExampleObserver` function in [observer_test.go](./observer_test.go).

vendor/github.com/uber/jaeger-client-go/rpcmetrics/doc.go

@@ -0,0 +1,22 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Package rpcmetrics implements an Observer that can be used to emit RPC metrics.
+package rpcmetrics

vendor/github.com/uber/jaeger-client-go/rpcmetrics/endpoints.go

@@ -0,0 +1,69 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package rpcmetrics
+
+import "sync"
+
+// normalizedEndpoints is a cache for endpointName -> safeName mappings.
+type normalizedEndpoints struct {
+	names       map[string]string
+	maxSize     int
+	defaultName string
+	normalizer  NameNormalizer
+	mux         sync.RWMutex
+}
+
+func newNormalizedEndpoints(maxSize int, normalizer NameNormalizer) *normalizedEndpoints {
+	return &normalizedEndpoints{
+		maxSize:    maxSize,
+		normalizer: normalizer,
+		names:      make(map[string]string, maxSize),
+	}
+}
+
+// normalize looks up the name in the cache, if not found it uses normalizer
+// to convert the name to a safe name. If called with more than maxSize unique
+// names it returns "" for all other names beyond those already cached.
+func (n *normalizedEndpoints) normalize(name string) string {
+	n.mux.RLock()
+	norm, ok := n.names[name]
+	l := len(n.names)
+	n.mux.RUnlock()
+	if ok {
+		return norm
+	}
+	if l >= n.maxSize {
+		return ""
+	}
+	return n.normalizeWithLock(name)
+}
+
+func (n *normalizedEndpoints) normalizeWithLock(name string) string {
+	norm := n.normalizer.Normalize(name)
+	n.mux.Lock()
+	defer n.mux.Unlock()
+	// cache may have grown while we were not holding the lock
+	if len(n.names) >= n.maxSize {
+		return ""
+	}
+	n.names[name] = norm
+	return norm
+}

vendor/github.com/uber/jaeger-client-go/rpcmetrics/metrics.go

@@ -0,0 +1,130 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package rpcmetrics
+
+import (
+	"sync"
+
+	"github.com/uber/jaeger-lib/metrics"
+)
+
+const (
+	otherEndpointsPlaceholder = "other"
+	endpointNameMetricTag     = "endpoint"
+)
+
+// Metrics is a collection of metrics for an endpoint describing
+// throughput, success, errors, and performance.
+type Metrics struct {
+	// RequestCountSuccess is a counter of the total number of successes.
+	RequestCountSuccess metrics.Counter `metric:"requests" tags:"error=false"`
+
+	// RequestCountFailures is a counter of the number of times any failure has been observed.
+	RequestCountFailures metrics.Counter `metric:"requests" tags:"error=true"`
+
+	// RequestLatencySuccess is a latency histogram of succesful requests.
+	RequestLatencySuccess metrics.Timer `metric:"request_latency" tags:"error=false"`
+
+	// RequestLatencyFailures is a latency histogram of failed requests.
+	RequestLatencyFailures metrics.Timer `metric:"request_latency" tags:"error=true"`
+
+	// HTTPStatusCode2xx is a counter of the total number of requests with HTTP status code 200-299
+	HTTPStatusCode2xx metrics.Counter `metric:"http_requests" tags:"status_code=2xx"`
+
+	// HTTPStatusCode3xx is a counter of the total number of requests with HTTP status code 300-399
+	HTTPStatusCode3xx metrics.Counter `metric:"http_requests" tags:"status_code=3xx"`
+
+	// HTTPStatusCode4xx is a counter of the total number of requests with HTTP status code 400-499
+	HTTPStatusCode4xx metrics.Counter `metric:"http_requests" tags:"status_code=4xx"`
+
+	// HTTPStatusCode5xx is a counter of the total number of requests with HTTP status code 500-599
+	HTTPStatusCode5xx metrics.Counter `metric:"http_requests" tags:"status_code=5xx"`
+}
+
+func (m *Metrics) recordHTTPStatusCode(statusCode uint16) {
+	if statusCode >= 200 && statusCode < 300 {
+		m.HTTPStatusCode2xx.Inc(1)
+	} else if statusCode >= 300 && statusCode < 400 {
+		m.HTTPStatusCode3xx.Inc(1)
+	} else if statusCode >= 400 && statusCode < 500 {
+		m.HTTPStatusCode4xx.Inc(1)
+	} else if statusCode >= 500 && statusCode < 600 {
+		m.HTTPStatusCode5xx.Inc(1)
+	}
+}
+
+// MetricsByEndpoint is a registry/cache of metrics for each unique endpoint name.
+// Only maxNumberOfEndpoints Metrics are stored, all other endpoint names are mapped
+// to a generic endpoint name "other".
+type MetricsByEndpoint struct {
+	metricsFactory    metrics.Factory
+	endpoints         *normalizedEndpoints
+	metricsByEndpoint map[string]*Metrics
+	mux               sync.RWMutex
+}
+
+func newMetricsByEndpoint(
+	metricsFactory metrics.Factory,
+	normalizer NameNormalizer,
+	maxNumberOfEndpoints int,
+) *MetricsByEndpoint {
+	return &MetricsByEndpoint{
+		metricsFactory:    metricsFactory,
+		endpoints:         newNormalizedEndpoints(maxNumberOfEndpoints, normalizer),
+		metricsByEndpoint: make(map[string]*Metrics, maxNumberOfEndpoints+1), // +1 for "other"
+	}
+}
+
+func (m *MetricsByEndpoint) get(endpoint string) *Metrics {
+	safeName := m.endpoints.normalize(endpoint)
+	if safeName == "" {
+		safeName = otherEndpointsPlaceholder
+	}
+	m.mux.RLock()
+	met := m.metricsByEndpoint[safeName]
+	m.mux.RUnlock()
+	if met != nil {
+		return met
+	}
+
+	return m.getWithWriteLock(safeName)
+}
+
+// split to make easier to test
+func (m *MetricsByEndpoint) getWithWriteLock(safeName string) *Metrics {
+	m.mux.Lock()
+	defer m.mux.Unlock()
+
+	// it is possible that the name has been already registered after we released
+	// the read lock and before we grabbed the write lock, so check for that.
+	if met, ok := m.metricsByEndpoint[safeName]; ok {
+		return met
+	}
+
+	// it would be nice to create the struct before locking, since Init() is somewhat
+	// expensive, however some metrics backends (e.g. expvar) may not like duplicate metrics.
+	met := &Metrics{}
+	tags := map[string]string{endpointNameMetricTag: safeName}
+	metrics.Init(met, m.metricsFactory, tags)
+
+	m.metricsByEndpoint[safeName] = met
+	return met
+}

vendor/github.com/uber/jaeger-client-go/rpcmetrics/normalizer.go

@@ -0,0 +1,107 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package rpcmetrics
+
+// NameNormalizer is used to convert the endpoint names to strings
+// that can be safely used as tags in the metrics.
+type NameNormalizer interface {
+	Normalize(name string) string
+}
+
+// DefaultNameNormalizer converts endpoint names so that they contain only characters
+// from the safe charset [a-zA-Z0-9-./_]. All other characters are replaced with '-'.
+var DefaultNameNormalizer = &SimpleNameNormalizer{
+	SafeSets: []SafeCharacterSet{
+		&Range{From: 'a', To: 'z'},
+		&Range{From: 'A', To: 'Z'},
+		&Range{From: '0', To: '9'},
+		&Char{'-'},
+		&Char{'_'},
+		&Char{'/'},
+		&Char{'.'},
+	},
+	Replacement: '-',
+}
+
+// SimpleNameNormalizer uses a set of safe character sets.
+type SimpleNameNormalizer struct {
+	SafeSets    []SafeCharacterSet
+	Replacement byte
+}
+
+// SafeCharacterSet determines if the given character is "safe"
+type SafeCharacterSet interface {
+	IsSafe(c byte) bool
+}
+
+// Range implements SafeCharacterSet
+type Range struct {
+	From, To byte
+}
+
+// IsSafe implements SafeCharacterSet
+func (r *Range) IsSafe(c byte) bool {
+	return c >= r.From && c <= r.To
+}
+
+// Char implements SafeCharacterSet
+type Char struct {
+	Val byte
+}
+
+// IsSafe implements SafeCharacterSet
+func (ch *Char) IsSafe(c byte) bool {
+	return c == ch.Val
+}
+
+// Normalize checks each character in the string against SafeSets,
+// and if it's not safe substitutes it with Replacement.
+func (n *SimpleNameNormalizer) Normalize(name string) string {
+	var retMe []byte
+	nameBytes := []byte(name)
+	for i, b := range nameBytes {
+		if n.safeByte(b) {
+			if retMe != nil {
+				retMe[i] = b
+			}
+		} else {
+			if retMe == nil {
+				retMe = make([]byte, len(nameBytes))
+				copy(retMe[0:i], nameBytes[0:i])
+			}
+			retMe[i] = n.Replacement
+		}
+	}
+	if retMe == nil {
+		return name
+	}
+	return string(retMe)
+}
+
+// safeByte checks if b against all safe charsets.
+func (n *SimpleNameNormalizer) safeByte(b byte) bool {
+	for i := range n.SafeSets {
+		if n.SafeSets[i].IsSafe(b) {
+			return true
+		}
+	}
+	return false
+}

vendor/github.com/uber/jaeger-client-go/rpcmetrics/observer.go

@@ -0,0 +1,177 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package rpcmetrics
+
+import (
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/opentracing/opentracing-go"
+	"github.com/opentracing/opentracing-go/ext"
+	"github.com/uber/jaeger-lib/metrics"
+
+	jaeger "github.com/uber/jaeger-client-go"
+)
+
+const defaultMaxNumberOfEndpoints = 200
+
+// Observer is an observer that can emit RPC metrics.
+type Observer struct {
+	metricsByEndpoint *MetricsByEndpoint
+}
+
+// NewObserver creates a new observer that can emit RPC metrics.
+func NewObserver(metricsFactory metrics.Factory, normalizer NameNormalizer) *Observer {
+	return &Observer{
+		metricsByEndpoint: newMetricsByEndpoint(
+			metricsFactory,
+			normalizer,
+			defaultMaxNumberOfEndpoints,
+		),
+	}
+}
+
+// OnStartSpan creates a new Observer for the span.
+func (o *Observer) OnStartSpan(
+	operationName string,
+	options opentracing.StartSpanOptions,
+) jaeger.SpanObserver {
+	return NewSpanObserver(o.metricsByEndpoint, operationName, options)
+}
+
+// SpanKind identifies the span as inboud, outbound, or internal
+type SpanKind int
+
+const (
+	// Local span kind
+	Local SpanKind = iota
+	// Inbound span kind
+	Inbound
+	// Outbound span kind
+	Outbound
+)
+
+// SpanObserver collects RPC metrics
+type SpanObserver struct {
+	metricsByEndpoint *MetricsByEndpoint
+	operationName     string
+	startTime         time.Time
+	mux               sync.Mutex
+	kind              SpanKind
+	httpStatusCode    uint16
+	err               bool
+}
+
+// NewSpanObserver creates a new SpanObserver that can emit RPC metrics.
+func NewSpanObserver(
+	metricsByEndpoint *MetricsByEndpoint,
+	operationName string,
+	options opentracing.StartSpanOptions,
+) *SpanObserver {
+	so := &SpanObserver{
+		metricsByEndpoint: metricsByEndpoint,
+		operationName:     operationName,
+		startTime:         options.StartTime,
+	}
+	for k, v := range options.Tags {
+		so.handleTagInLock(k, v)
+	}
+	return so
+}
+
+// handleTags watches for special tags
+// - SpanKind
+// - HttpStatusCode
+// - Error
+func (so *SpanObserver) handleTagInLock(key string, value interface{}) {
+	if key == string(ext.SpanKind) {
+		if v, ok := value.(ext.SpanKindEnum); ok {
+			value = string(v)
+		}
+		if v, ok := value.(string); ok {
+			if v == string(ext.SpanKindRPCClientEnum) {
+				so.kind = Outbound
+			} else if v == string(ext.SpanKindRPCServerEnum) {
+				so.kind = Inbound
+			}
+		}
+		return
+	}
+	if key == string(ext.HTTPStatusCode) {
+		if v, ok := value.(uint16); ok {
+			so.httpStatusCode = v
+		} else if v, ok := value.(int); ok {
+			so.httpStatusCode = uint16(v)
+		} else if v, ok := value.(string); ok {
+			if vv, err := strconv.Atoi(v); err == nil {
+				so.httpStatusCode = uint16(vv)
+			}
+		}
+		return
+	}
+	if key == string(ext.Error) {
+		if v, ok := value.(bool); ok {
+			so.err = v
+		} else if v, ok := value.(string); ok {
+			if vv, err := strconv.ParseBool(v); err == nil {
+				so.err = vv
+			}
+		}
+		return
+	}
+}
+
+// OnFinish emits the RPC metrics. It only has an effect when operation name
+// is not blank, and the span kind is an RPC server.
+func (so *SpanObserver) OnFinish(options opentracing.FinishOptions) {
+	so.mux.Lock()
+	defer so.mux.Unlock()
+
+	if so.operationName == "" || so.kind != Inbound {
+		return
+	}
+
+	mets := so.metricsByEndpoint.get(so.operationName)
+	latency := options.FinishTime.Sub(so.startTime)
+	if so.err {
+		mets.RequestCountFailures.Inc(1)
+		mets.RequestLatencyFailures.Record(latency)
+	} else {
+		mets.RequestCountSuccess.Inc(1)
+		mets.RequestLatencySuccess.Record(latency)
+	}
+	mets.recordHTTPStatusCode(so.httpStatusCode)
+}
+
+// OnSetOperationName records new operation name.
+func (so *SpanObserver) OnSetOperationName(operationName string) {
+	so.mux.Lock()
+	so.operationName = operationName
+	so.mux.Unlock()
+}
+
+// OnSetTag implements SpanObserver
+func (so *SpanObserver) OnSetTag(key string, value interface{}) {
+	so.mux.Lock()
+	so.handleTagInLock(key, value)
+	so.mux.Unlock()
+}

vendor/github.com/uber/jaeger-client-go/sampler.go

@@ -0,0 +1,536 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"fmt"
+	"math"
+	"net/url"
+	"sync"
+	"time"
+
+	"github.com/uber/jaeger-client-go/log"
+	"github.com/uber/jaeger-client-go/thrift-gen/sampling"
+	"github.com/uber/jaeger-client-go/utils"
+)
+
+const (
+	defaultSamplingServerURL       = "http://localhost:5778/sampling"
+	defaultSamplingRefreshInterval = time.Minute
+	defaultMaxOperations           = 2000
+)
+
+// Sampler decides whether a new trace should be sampled or not.
+type Sampler interface {
+	// IsSampled decides whether a trace with given `id` and `operation`
+	// should be sampled. This function will also return the tags that
+	// can be used to identify the type of sampling that was applied to
+	// the root span. Most simple samplers would return two tags,
+	// sampler.type and sampler.param, similar to those used in the Configuration
+	IsSampled(id TraceID, operation string) (sampled bool, tags []Tag)
+
+	// Close does a clean shutdown of the sampler, stopping any background
+	// go-routines it may have started.
+	Close()
+
+	// Equal checks if the `other` sampler is functionally equivalent
+	// to this sampler.
+	// TODO remove this function. This function is used to determine if 2 samplers are equivalent
+	// which does not bode well with the adaptive sampler which has to create all the composite samplers
+	// for the comparison to occur. This is expensive to do if only one sampler has changed.
+	Equal(other Sampler) bool
+}
+
+// -----------------------
+
+// ConstSampler is a sampler that always makes the same decision.
+type ConstSampler struct {
+	Decision bool
+	tags     []Tag
+}
+
+// NewConstSampler creates a ConstSampler.
+func NewConstSampler(sample bool) Sampler {
+	tags := []Tag{
+		{key: SamplerTypeTagKey, value: SamplerTypeConst},
+		{key: SamplerParamTagKey, value: sample},
+	}
+	return &ConstSampler{Decision: sample, tags: tags}
+}
+
+// IsSampled implements IsSampled() of Sampler.
+func (s *ConstSampler) IsSampled(id TraceID, operation string) (bool, []Tag) {
+	return s.Decision, s.tags
+}
+
+// Close implements Close() of Sampler.
+func (s *ConstSampler) Close() {
+	// nothing to do
+}
+
+// Equal implements Equal() of Sampler.
+func (s *ConstSampler) Equal(other Sampler) bool {
+	if o, ok := other.(*ConstSampler); ok {
+		return s.Decision == o.Decision
+	}
+	return false
+}
+
+// -----------------------
+
+// ProbabilisticSampler is a sampler that randomly samples a certain percentage
+// of traces.
+type ProbabilisticSampler struct {
+	samplingRate     float64
+	samplingBoundary uint64
+	tags             []Tag
+}
+
+const maxRandomNumber = ^(uint64(1) << 63) // i.e. 0x7fffffffffffffff
+
+// NewProbabilisticSampler creates a sampler that randomly samples a certain percentage of traces specified by the
+// samplingRate, in the range between 0.0 and 1.0.
+//
+// It relies on the fact that new trace IDs are 63bit random numbers themselves, thus making the sampling decision
+// without generating a new random number, but simply calculating if traceID < (samplingRate * 2^63).
+// TODO remove the error from this function for next major release
+func NewProbabilisticSampler(samplingRate float64) (*ProbabilisticSampler, error) {
+	if samplingRate < 0.0 || samplingRate > 1.0 {
+		return nil, fmt.Errorf("Sampling Rate must be between 0.0 and 1.0, received %f", samplingRate)
+	}
+	return newProbabilisticSampler(samplingRate), nil
+}
+
+func newProbabilisticSampler(samplingRate float64) *ProbabilisticSampler {
+	samplingRate = math.Max(0.0, math.Min(samplingRate, 1.0))
+	tags := []Tag{
+		{key: SamplerTypeTagKey, value: SamplerTypeProbabilistic},
+		{key: SamplerParamTagKey, value: samplingRate},
+	}
+	return &ProbabilisticSampler{
+		samplingRate:     samplingRate,
+		samplingBoundary: uint64(float64(maxRandomNumber) * samplingRate),
+		tags:             tags,
+	}
+}
+
+// SamplingRate returns the sampling probability this sampled was constructed with.
+func (s *ProbabilisticSampler) SamplingRate() float64 {
+	return s.samplingRate
+}
+
+// IsSampled implements IsSampled() of Sampler.
+func (s *ProbabilisticSampler) IsSampled(id TraceID, operation string) (bool, []Tag) {
+	return s.samplingBoundary >= id.Low, s.tags
+}
+
+// Close implements Close() of Sampler.
+func (s *ProbabilisticSampler) Close() {
+	// nothing to do
+}
+
+// Equal implements Equal() of Sampler.
+func (s *ProbabilisticSampler) Equal(other Sampler) bool {
+	if o, ok := other.(*ProbabilisticSampler); ok {
+		return s.samplingBoundary == o.samplingBoundary
+	}
+	return false
+}
+
+// -----------------------
+
+type rateLimitingSampler struct {
+	maxTracesPerSecond float64
+	rateLimiter        utils.RateLimiter
+	tags               []Tag
+}
+
+// NewRateLimitingSampler creates a sampler that samples at most maxTracesPerSecond. The distribution of sampled
+// traces follows burstiness of the service, i.e. a service with uniformly distributed requests will have those
+// requests sampled uniformly as well, but if requests are bursty, especially sub-second, then a number of
+// sequential requests can be sampled each second.
+func NewRateLimitingSampler(maxTracesPerSecond float64) Sampler {
+	tags := []Tag{
+		{key: SamplerTypeTagKey, value: SamplerTypeRateLimiting},
+		{key: SamplerParamTagKey, value: maxTracesPerSecond},
+	}
+	return &rateLimitingSampler{
+		maxTracesPerSecond: maxTracesPerSecond,
+		rateLimiter:        utils.NewRateLimiter(maxTracesPerSecond, math.Max(maxTracesPerSecond, 1.0)),
+		tags:               tags,
+	}
+}
+
+// IsSampled implements IsSampled() of Sampler.
+func (s *rateLimitingSampler) IsSampled(id TraceID, operation string) (bool, []Tag) {
+	return s.rateLimiter.CheckCredit(1.0), s.tags
+}
+
+func (s *rateLimitingSampler) Close() {
+	// nothing to do
+}
+
+func (s *rateLimitingSampler) Equal(other Sampler) bool {
+	if o, ok := other.(*rateLimitingSampler); ok {
+		return s.maxTracesPerSecond == o.maxTracesPerSecond
+	}
+	return false
+}
+
+// -----------------------
+
+// GuaranteedThroughputProbabilisticSampler is a sampler that leverages both probabilisticSampler and
+// rateLimitingSampler. The rateLimitingSampler is used as a guaranteed lower bound sampler such that
+// every operation is sampled at least once in a time interval defined by the lowerBound. ie a lowerBound
+// of 1.0 / (60 * 10) will sample an operation at least once every 10 minutes.
+//
+// The probabilisticSampler is given higher priority when tags are emitted, ie. if IsSampled() for both
+// samplers return true, the tags for probabilisticSampler will be used.
+type GuaranteedThroughputProbabilisticSampler struct {
+	probabilisticSampler *ProbabilisticSampler
+	lowerBoundSampler    Sampler
+	tags                 []Tag
+	samplingRate         float64
+	lowerBound           float64
+}
+
+// NewGuaranteedThroughputProbabilisticSampler returns a delegating sampler that applies both
+// probabilisticSampler and rateLimitingSampler.
+func NewGuaranteedThroughputProbabilisticSampler(
+	lowerBound, samplingRate float64,
+) (*GuaranteedThroughputProbabilisticSampler, error) {
+	return newGuaranteedThroughputProbabilisticSampler(lowerBound, samplingRate), nil
+}
+
+func newGuaranteedThroughputProbabilisticSampler(lowerBound, samplingRate float64) *GuaranteedThroughputProbabilisticSampler {
+	s := &GuaranteedThroughputProbabilisticSampler{
+		lowerBoundSampler: NewRateLimitingSampler(lowerBound),
+		lowerBound:        lowerBound,
+	}
+	s.setProbabilisticSampler(samplingRate)
+	return s
+}
+
+func (s *GuaranteedThroughputProbabilisticSampler) setProbabilisticSampler(samplingRate float64) {
+	if s.probabilisticSampler == nil || s.samplingRate != samplingRate {
+		s.probabilisticSampler = newProbabilisticSampler(samplingRate)
+		s.samplingRate = s.probabilisticSampler.SamplingRate()
+		s.tags = []Tag{
+			{key: SamplerTypeTagKey, value: SamplerTypeLowerBound},
+			{key: SamplerParamTagKey, value: s.samplingRate},
+		}
+	}
+}
+
+// IsSampled implements IsSampled() of Sampler.
+func (s *GuaranteedThroughputProbabilisticSampler) IsSampled(id TraceID, operation string) (bool, []Tag) {
+	if sampled, tags := s.probabilisticSampler.IsSampled(id, operation); sampled {
+		s.lowerBoundSampler.IsSampled(id, operation)
+		return true, tags
+	}
+	sampled, _ := s.lowerBoundSampler.IsSampled(id, operation)
+	return sampled, s.tags
+}
+
+// Close implements Close() of Sampler.
+func (s *GuaranteedThroughputProbabilisticSampler) Close() {
+	s.probabilisticSampler.Close()
+	s.lowerBoundSampler.Close()
+}
+
+// Equal implements Equal() of Sampler.
+func (s *GuaranteedThroughputProbabilisticSampler) Equal(other Sampler) bool {
+	// NB The Equal() function is expensive and will be removed. See adaptiveSampler.Equal() for
+	// more information.
+	return false
+}
+
+// this function should only be called while holding a Write lock
+func (s *GuaranteedThroughputProbabilisticSampler) update(lowerBound, samplingRate float64) {
+	s.setProbabilisticSampler(samplingRate)
+	if s.lowerBound != lowerBound {
+		s.lowerBoundSampler = NewRateLimitingSampler(lowerBound)
+		s.lowerBound = lowerBound
+	}
+}
+
+// -----------------------
+
+type adaptiveSampler struct {
+	sync.RWMutex
+
+	samplers       map[string]*GuaranteedThroughputProbabilisticSampler
+	defaultSampler *ProbabilisticSampler
+	lowerBound     float64
+	maxOperations  int
+}
+
+// NewAdaptiveSampler returns a delegating sampler that applies both probabilisticSampler and
+// rateLimitingSampler via the guaranteedThroughputProbabilisticSampler. This sampler keeps track of all
+// operations and delegates calls to the respective guaranteedThroughputProbabilisticSampler.
+func NewAdaptiveSampler(strategies *sampling.PerOperationSamplingStrategies, maxOperations int) (Sampler, error) {
+	return newAdaptiveSampler(strategies, maxOperations), nil
+}
+
+func newAdaptiveSampler(strategies *sampling.PerOperationSamplingStrategies, maxOperations int) Sampler {
+	samplers := make(map[string]*GuaranteedThroughputProbabilisticSampler)
+	for _, strategy := range strategies.PerOperationStrategies {
+		sampler := newGuaranteedThroughputProbabilisticSampler(
+			strategies.DefaultLowerBoundTracesPerSecond,
+			strategy.ProbabilisticSampling.SamplingRate,
+		)
+		samplers[strategy.Operation] = sampler
+	}
+	return &adaptiveSampler{
+		samplers:       samplers,
+		defaultSampler: newProbabilisticSampler(strategies.DefaultSamplingProbability),
+		lowerBound:     strategies.DefaultLowerBoundTracesPerSecond,
+		maxOperations:  maxOperations,
+	}
+}
+
+func (s *adaptiveSampler) IsSampled(id TraceID, operation string) (bool, []Tag) {
+	s.RLock()
+	sampler, ok := s.samplers[operation]
+	if ok {
+		defer s.RUnlock()
+		return sampler.IsSampled(id, operation)
+	}
+	s.RUnlock()
+	s.Lock()
+	defer s.Unlock()
+
+	// Check if sampler has already been created
+	sampler, ok = s.samplers[operation]
+	if ok {
+		return sampler.IsSampled(id, operation)
+	}
+	// Store only up to maxOperations of unique ops.
+	if len(s.samplers) >= s.maxOperations {
+		return s.defaultSampler.IsSampled(id, operation)
+	}
+	newSampler := newGuaranteedThroughputProbabilisticSampler(s.lowerBound, s.defaultSampler.SamplingRate())
+	s.samplers[operation] = newSampler
+	return newSampler.IsSampled(id, operation)
+}
+
+func (s *adaptiveSampler) Close() {
+	s.Lock()
+	defer s.Unlock()
+	for _, sampler := range s.samplers {
+		sampler.Close()
+	}
+}
+
+func (s *adaptiveSampler) Equal(other Sampler) bool {
+	// NB The Equal() function is overly expensive for adaptiveSampler since it's composed of multiple
+	// samplers which all need to be initialized before this function can be called for a comparison.
+	// Therefore, adaptiveSampler uses the update() function to only alter the samplers that need
+	// changing. Hence this function always returns false so that the update function can be called.
+	// Once the Equal() function is removed from the Sampler API, this will no longer be needed.
+	return false
+}
+
+func (s *adaptiveSampler) update(strategies *sampling.PerOperationSamplingStrategies) {
+	s.Lock()
+	defer s.Unlock()
+	for _, strategy := range strategies.PerOperationStrategies {
+		operation := strategy.Operation
+		samplingRate := strategy.ProbabilisticSampling.SamplingRate
+		lowerBound := strategies.DefaultLowerBoundTracesPerSecond
+		if sampler, ok := s.samplers[operation]; ok {
+			sampler.update(lowerBound, samplingRate)
+		} else {
+			sampler := newGuaranteedThroughputProbabilisticSampler(
+				lowerBound,
+				samplingRate,
+			)
+			s.samplers[operation] = sampler
+		}
+	}
+	s.lowerBound = strategies.DefaultLowerBoundTracesPerSecond
+	if s.defaultSampler.SamplingRate() != strategies.DefaultSamplingProbability {
+		s.defaultSampler = newProbabilisticSampler(strategies.DefaultSamplingProbability)
+	}
+}
+
+// -----------------------
+
+// RemotelyControlledSampler is a delegating sampler that polls a remote server
+// for the appropriate sampling strategy, constructs a corresponding sampler and
+// delegates to it for sampling decisions.
+type RemotelyControlledSampler struct {
+	sync.RWMutex
+	samplerOptions
+
+	serviceName string
+	timer       *time.Ticker
+	manager     sampling.SamplingManager
+	pollStopped sync.WaitGroup
+}
+
+type httpSamplingManager struct {
+	serverURL string
+}
+
+func (s *httpSamplingManager) GetSamplingStrategy(serviceName string) (*sampling.SamplingStrategyResponse, error) {
+	var out sampling.SamplingStrategyResponse
+	v := url.Values{}
+	v.Set("service", serviceName)
+	if err := utils.GetJSON(s.serverURL+"?"+v.Encode(), &out); err != nil {
+		return nil, err
+	}
+	return &out, nil
+}
+
+// NewRemotelyControlledSampler creates a sampler that periodically pulls
+// the sampling strategy from an HTTP sampling server (e.g. jaeger-agent).
+func NewRemotelyControlledSampler(
+	serviceName string,
+	opts ...SamplerOption,
+) *RemotelyControlledSampler {
+	options := applySamplerOptions(opts...)
+	sampler := &RemotelyControlledSampler{
+		samplerOptions: options,
+		serviceName:    serviceName,
+		timer:          time.NewTicker(options.samplingRefreshInterval),
+		manager:        &httpSamplingManager{serverURL: options.samplingServerURL},
+	}
+
+	go sampler.pollController()
+	return sampler
+}
+
+func applySamplerOptions(opts ...SamplerOption) samplerOptions {
+	options := samplerOptions{}
+	for _, option := range opts {
+		option(&options)
+	}
+	if options.sampler == nil {
+		options.sampler = newProbabilisticSampler(0.001)
+	}
+	if options.logger == nil {
+		options.logger = log.NullLogger
+	}
+	if options.maxOperations <= 0 {
+		options.maxOperations = defaultMaxOperations
+	}
+	if options.samplingServerURL == "" {
+		options.samplingServerURL = defaultSamplingServerURL
+	}
+	if options.metrics == nil {
+		options.metrics = NewNullMetrics()
+	}
+	if options.samplingRefreshInterval <= 0 {
+		options.samplingRefreshInterval = defaultSamplingRefreshInterval
+	}
+	return options
+}
+
+// IsSampled implements IsSampled() of Sampler.
+func (s *RemotelyControlledSampler) IsSampled(id TraceID, operation string) (bool, []Tag) {
+	s.RLock()
+	defer s.RUnlock()
+	return s.sampler.IsSampled(id, operation)
+}
+
+// Close implements Close() of Sampler.
+func (s *RemotelyControlledSampler) Close() {
+	s.RLock()
+	s.timer.Stop()
+	s.RUnlock()
+
+	s.pollStopped.Wait()
+}
+
+// Equal implements Equal() of Sampler.
+func (s *RemotelyControlledSampler) Equal(other Sampler) bool {
+	// NB The Equal() function is expensive and will be removed. See adaptiveSampler.Equal() for
+	// more information.
+	if o, ok := other.(*RemotelyControlledSampler); ok {
+		s.RLock()
+		o.RLock()
+		defer s.RUnlock()
+		defer o.RUnlock()
+		return s.sampler.Equal(o.sampler)
+	}
+	return false
+}
+
+func (s *RemotelyControlledSampler) pollController() {
+	// in unit tests we re-assign the timer Ticker, so need to lock to avoid data races
+	s.Lock()
+	timer := s.timer
+	s.Unlock()
+
+	for range timer.C {
+		s.updateSampler()
+	}
+	s.pollStopped.Add(1)
+}
+
+func (s *RemotelyControlledSampler) updateSampler() {
+	res, err := s.manager.GetSamplingStrategy(s.serviceName)
+	if err != nil {
+		s.metrics.SamplerQueryFailure.Inc(1)
+		return
+	}
+	s.Lock()
+	defer s.Unlock()
+
+	s.metrics.SamplerRetrieved.Inc(1)
+	if strategies := res.GetOperationSampling(); strategies != nil {
+		s.updateAdaptiveSampler(strategies)
+	} else {
+		err = s.updateRateLimitingOrProbabilisticSampler(res)
+	}
+	if err != nil {
+		s.metrics.SamplerUpdateFailure.Inc(1)
+		s.logger.Infof("Unable to handle sampling strategy response %+v. Got error: %v", res, err)
+		return
+	}
+	s.metrics.SamplerUpdated.Inc(1)
+}
+
+// NB: this function should only be called while holding a Write lock
+func (s *RemotelyControlledSampler) updateAdaptiveSampler(strategies *sampling.PerOperationSamplingStrategies) {
+	if adaptiveSampler, ok := s.sampler.(*adaptiveSampler); ok {
+		adaptiveSampler.update(strategies)
+	} else {
+		s.sampler = newAdaptiveSampler(strategies, s.maxOperations)
+	}
+}
+
+// NB: this function should only be called while holding a Write lock
+func (s *RemotelyControlledSampler) updateRateLimitingOrProbabilisticSampler(res *sampling.SamplingStrategyResponse) error {
+	var newSampler Sampler
+	if probabilistic := res.GetProbabilisticSampling(); probabilistic != nil {
+		newSampler = newProbabilisticSampler(probabilistic.SamplingRate)
+	} else if rateLimiting := res.GetRateLimitingSampling(); rateLimiting != nil {
+		newSampler = NewRateLimitingSampler(float64(rateLimiting.MaxTracesPerSecond))
+	} else {
+		return fmt.Errorf("Unsupported sampling strategy type %v", res.GetStrategyType())
+	}
+	if !s.sampler.Equal(newSampler) {
+		s.sampler = newSampler
+	}
+	return nil
+}

vendor/github.com/uber/jaeger-client-go/sampler_options.go

@@ -0,0 +1,87 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"time"
+)
+
+// SamplerOption is a function that sets some option on the sampler
+type SamplerOption func(options *samplerOptions)
+
+// SamplerOptions is a factory for all available SamplerOption's
+var SamplerOptions samplerOptions
+
+type samplerOptions struct {
+	metrics                 *Metrics
+	maxOperations           int
+	sampler                 Sampler
+	logger                  Logger
+	samplingServerURL       string
+	samplingRefreshInterval time.Duration
+}
+
+// Metrics creates a SamplerOption that initializes Metrics on the sampler,
+// which is used to emit statistics.
+func (samplerOptions) Metrics(m *Metrics) SamplerOption {
+	return func(o *samplerOptions) {
+		o.metrics = m
+	}
+}
+
+// MaxOperations creates a SamplerOption that sets the maximum number of
+// operations the sampler will keep track of.
+func (samplerOptions) MaxOperations(maxOperations int) SamplerOption {
+	return func(o *samplerOptions) {
+		o.maxOperations = maxOperations
+	}
+}
+
+// InitialSampler creates a SamplerOption that sets the initial sampler
+// to use before a remote sampler is created and used.
+func (samplerOptions) InitialSampler(sampler Sampler) SamplerOption {
+	return func(o *samplerOptions) {
+		o.sampler = sampler
+	}
+}
+
+// Logger creates a SamplerOption that sets the logger used by the sampler.
+func (samplerOptions) Logger(logger Logger) SamplerOption {
+	return func(o *samplerOptions) {
+		o.logger = logger
+	}
+}
+
+// SamplingServerURL creates a SamplerOption that sets the sampling server url
+// of the local agent that contains the sampling strategies.
+func (samplerOptions) SamplingServerURL(samplingServerURL string) SamplerOption {
+	return func(o *samplerOptions) {
+		o.samplingServerURL = samplingServerURL
+	}
+}
+
+// SamplingRefreshInterval creates a SamplerOption that sets how often the
+// sampler will poll local agent for the appropriate sampling strategy.
+func (samplerOptions) SamplingRefreshInterval(samplingRefreshInterval time.Duration) SamplerOption {
+	return func(o *samplerOptions) {
+		o.samplingRefreshInterval = samplingRefreshInterval
+	}
+}

vendor/github.com/uber/jaeger-client-go/span.go

@@ -0,0 +1,254 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package jaeger
+
+import (
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/opentracing/opentracing-go"
+	"github.com/opentracing/opentracing-go/ext"
+	"github.com/opentracing/opentracing-go/log"
+)
+
+// Span implements opentracing.Span
+type Span struct {
+	sync.RWMutex
+
+	tracer *Tracer
+
+	context SpanContext
+
+	// The name of the "operation" this span is an instance of.
+	// Known as a "span name" in some implementations.
+	operationName string
+
+	// firstInProcess, if true, indicates that this span is the root of the (sub)tree
+	// of spans in the current process. In other words it's true for the root spans,
+	// and the ingress spans when the process joins another trace.
+	firstInProcess bool
+
+	// startTime is the timestamp indicating when the span began, with microseconds precision.
+	startTime time.Time
+
+	// duration returns duration of the span with microseconds precision.
+	// Zero value means duration is unknown.
+	duration time.Duration
+
+	// tags attached to this span
+	tags []Tag
+
+	// The span's "micro-log"
+	logs []opentracing.LogRecord
+
+	// references for this span
+	references []Reference
+
+	observer ContribSpanObserver
+}
+
+// Tag is a simple key value wrapper.
+// TODO deprecate in the next major release, use opentracing.Tag instead.
+type Tag struct {
+	key   string
+	value interface{}
+}
+
+// SetOperationName sets or changes the operation name.
+func (s *Span) SetOperationName(operationName string) opentracing.Span {
+	s.Lock()
+	defer s.Unlock()
+	if s.context.IsSampled() {
+		s.operationName = operationName
+	}
+	s.observer.OnSetOperationName(operationName)
+	return s
+}
+
+// SetTag implements SetTag() of opentracing.Span
+func (s *Span) SetTag(key string, value interface{}) opentracing.Span {
+	s.observer.OnSetTag(key, value)
+	if key == string(ext.SamplingPriority) && setSamplingPriority(s, value) {
+		return s
+	}
+	s.Lock()
+	defer s.Unlock()
+	if s.context.IsSampled() {
+		s.setTagNoLocking(key, value)
+	}
+	return s
+}
+
+func (s *Span) setTagNoLocking(key string, value interface{}) {
+	s.tags = append(s.tags, Tag{key: key, value: value})
+}
+
+// LogFields implements opentracing.Span API
+func (s *Span) LogFields(fields ...log.Field) {
+	s.Lock()
+	defer s.Unlock()
+	if !s.context.IsSampled() {
+		return
+	}
+	s.logFieldsNoLocking(fields...)
+}
+
+// this function should only be called while holding a Write lock
+func (s *Span) logFieldsNoLocking(fields ...log.Field) {
+	lr := opentracing.LogRecord{
+		Fields:    fields,
+		Timestamp: time.Now(),
+	}
+	s.appendLog(lr)
+}
+
+// LogKV implements opentracing.Span API
+func (s *Span) LogKV(alternatingKeyValues ...interface{}) {
+	s.RLock()
+	sampled := s.context.IsSampled()
+	s.RUnlock()
+	if !sampled {
+		return
+	}
+	fields, err := log.InterleavedKVToFields(alternatingKeyValues...)
+	if err != nil {
+		s.LogFields(log.Error(err), log.String("function", "LogKV"))
+		return
+	}
+	s.LogFields(fields...)
+}
+
+// LogEvent implements opentracing.Span API
+func (s *Span) LogEvent(event string) {
+	s.Log(opentracing.LogData{Event: event})
+}
+
+// LogEventWithPayload implements opentracing.Span API
+func (s *Span) LogEventWithPayload(event string, payload interface{}) {
+	s.Log(opentracing.LogData{Event: event, Payload: payload})
+}
+
+// Log implements opentracing.Span API
+func (s *Span) Log(ld opentracing.LogData) {
+	s.Lock()
+	defer s.Unlock()
+	if s.context.IsSampled() {
+		if ld.Timestamp.IsZero() {
+			ld.Timestamp = s.tracer.timeNow()
+		}
+		s.appendLog(ld.ToLogRecord())
+	}
+}
+
+// this function should only be called while holding a Write lock
+func (s *Span) appendLog(lr opentracing.LogRecord) {
+	// TODO add logic to limit number of logs per span (issue #46)
+	s.logs = append(s.logs, lr)
+}
+
+// SetBaggageItem implements SetBaggageItem() of opentracing.SpanContext
+func (s *Span) SetBaggageItem(key, value string) opentracing.Span {
+	key = normalizeBaggageKey(key)
+	s.Lock()
+	defer s.Unlock()
+	s.tracer.setBaggage(s, key, value)
+	return s
+}
+
+// BaggageItem implements BaggageItem() of opentracing.SpanContext
+func (s *Span) BaggageItem(key string) string {
+	key = normalizeBaggageKey(key)
+	s.RLock()
+	defer s.RUnlock()
+	return s.context.baggage[key]
+}
+
+// Finish implements opentracing.Span API
+func (s *Span) Finish() {
+	s.FinishWithOptions(opentracing.FinishOptions{})
+}
+
+// FinishWithOptions implements opentracing.Span API
+func (s *Span) FinishWithOptions(options opentracing.FinishOptions) {
+	if options.FinishTime.IsZero() {
+		options.FinishTime = s.tracer.timeNow()
+	}
+	s.observer.OnFinish(options)
+	s.Lock()
+	if s.context.IsSampled() {
+		s.duration = options.FinishTime.Sub(s.startTime)
+		// Note: bulk logs are not subject to maxLogsPerSpan limit
+		if options.LogRecords != nil {
+			s.logs = append(s.logs, options.LogRecords...)
+		}
+		for _, ld := range options.BulkLogData {
+			s.logs = append(s.logs, ld.ToLogRecord())
+		}
+	}
+	s.Unlock()
+	// call reportSpan even for non-sampled traces, to return span to the pool
+	s.tracer.reportSpan(s)
+}
+
+// Context implements opentracing.Span API
+func (s *Span) Context() opentracing.SpanContext {
+	return s.context
+}
+
+// Tracer implements opentracing.Span API
+func (s *Span) Tracer() opentracing.Tracer {
+	return s.tracer
+}
+
+func (s *Span) String() string {
+	s.RLock()
+	defer s.RUnlock()
+	return s.context.String()
+}
+
+// OperationName allows retrieving current operation name.
+func (s *Span) OperationName() string {
+	s.RLock()
+	defer s.RUnlock()
+	return s.operationName
+}
+
+func setSamplingPriority(s *Span, value interface{}) bool {
+	s.Lock()
+	defer s.Unlock()
+	if val, ok := value.(uint16); ok {
+		if val > 0 {
+			s.context.flags = s.context.flags | flagDebug | flagSampled
+		} else {
+			s.context.flags = s.context.flags & (^flagSampled)
+		}
+		return true
+	}
+	return false
+}
+
+// Converts end-user baggage key into internal representation.
+// Used for both read and write access to baggage items.
+func normalizeBaggageKey(key string) string {
+	// TODO(yurishkuro) normalizeBaggageKey: cache the results in some bounded LRU cache
+	return strings.Replace(strings.ToLower(key), "_", "-", -1)
+}

vendor/github.com/uber/jaeger-client-go/thrift-gen/agent/agent.go

@@ -0,0 +1,410 @@
+// Autogenerated by Thrift Compiler (0.9.3)
+// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+
+package agent
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/apache/thrift/lib/go/thrift"
+	"github.com/uber/jaeger-client-go/thrift-gen/jaeger"
+	"github.com/uber/jaeger-client-go/thrift-gen/zipkincore"
+)
+
+// (needed to ensure safety because of naive import list construction.)
+var _ = thrift.ZERO
+var _ = fmt.Printf
+var _ = bytes.Equal
+
+var _ = zipkincore.GoUnusedProtection__
+
+type Agent interface {
+	// Parameters:
+	//  - Spans
+	EmitZipkinBatch(spans []*zipkincore.Span) (err error)
+	// Parameters:
+	//  - Batch
+	EmitBatch(batch *jaeger.Batch) (err error)
+}
+
+type AgentClient struct {
+	Transport       thrift.TTransport
+	ProtocolFactory thrift.TProtocolFactory
+	InputProtocol   thrift.TProtocol
+	OutputProtocol  thrift.TProtocol
+	SeqId           int32
+}
+
+func NewAgentClientFactory(t thrift.TTransport, f thrift.TProtocolFactory) *AgentClient {
+	return &AgentClient{Transport: t,
+		ProtocolFactory: f,
+		InputProtocol:   f.GetProtocol(t),
+		OutputProtocol:  f.GetProtocol(t),
+		SeqId:           0,
+	}
+}
+
+func NewAgentClientProtocol(t thrift.TTransport, iprot thrift.TProtocol, oprot thrift.TProtocol) *AgentClient {
+	return &AgentClient{Transport: t,
+		ProtocolFactory: nil,
+		InputProtocol:   iprot,
+		OutputProtocol:  oprot,
+		SeqId:           0,
+	}
+}
+
+// Parameters:
+//  - Spans
+func (p *AgentClient) EmitZipkinBatch(spans []*zipkincore.Span) (err error) {
+	if err = p.sendEmitZipkinBatch(spans); err != nil {
+		return
+	}
+	return
+}
+
+func (p *AgentClient) sendEmitZipkinBatch(spans []*zipkincore.Span) (err error) {
+	oprot := p.OutputProtocol
+	if oprot == nil {
+		oprot = p.ProtocolFactory.GetProtocol(p.Transport)
+		p.OutputProtocol = oprot
+	}
+	p.SeqId++
+	if err = oprot.WriteMessageBegin("emitZipkinBatch", thrift.ONEWAY, p.SeqId); err != nil {
+		return
+	}
+	args := AgentEmitZipkinBatchArgs{
+		Spans: spans,
+	}
+	if err = args.Write(oprot); err != nil {
+		return
+	}
+	if err = oprot.WriteMessageEnd(); err != nil {
+		return
+	}
+	return oprot.Flush()
+}
+
+// Parameters:
+//  - Batch
+func (p *AgentClient) EmitBatch(batch *jaeger.Batch) (err error) {
+	if err = p.sendEmitBatch(batch); err != nil {
+		return
+	}
+	return
+}
+
+func (p *AgentClient) sendEmitBatch(batch *jaeger.Batch) (err error) {
+	oprot := p.OutputProtocol
+	if oprot == nil {
+		oprot = p.ProtocolFactory.GetProtocol(p.Transport)
+		p.OutputProtocol = oprot
+	}
+	p.SeqId++
+	if err = oprot.WriteMessageBegin("emitBatch", thrift.ONEWAY, p.SeqId); err != nil {
+		return
+	}
+	args := AgentEmitBatchArgs{
+		Batch: batch,
+	}
+	if err = args.Write(oprot); err != nil {
+		return
+	}
+	if err = oprot.WriteMessageEnd(); err != nil {
+		return
+	}
+	return oprot.Flush()
+}
+
+type AgentProcessor struct {
+	processorMap map[string]thrift.TProcessorFunction
+	handler      Agent
+}
+
+func (p *AgentProcessor) AddToProcessorMap(key string, processor thrift.TProcessorFunction) {
+	p.processorMap[key] = processor
+}
+
+func (p *AgentProcessor) GetProcessorFunction(key string) (processor thrift.TProcessorFunction, ok bool) {
+	processor, ok = p.processorMap[key]
+	return processor, ok
+}
+
+func (p *AgentProcessor) ProcessorMap() map[string]thrift.TProcessorFunction {
+	return p.processorMap
+}
+
+func NewAgentProcessor(handler Agent) *AgentProcessor {
+
+	self0 := &AgentProcessor{handler: handler, processorMap: make(map[string]thrift.TProcessorFunction)}
+	self0.processorMap["emitZipkinBatch"] = &agentProcessorEmitZipkinBatch{handler: handler}
+	self0.processorMap["emitBatch"] = &agentProcessorEmitBatch{handler: handler}
+	return self0
+}
+
+func (p *AgentProcessor) Process(iprot, oprot thrift.TProtocol) (success bool, err thrift.TException) {
+	name, _, seqId, err := iprot.ReadMessageBegin()
+	if err != nil {
+		return false, err
+	}
+	if processor, ok := p.GetProcessorFunction(name); ok {
+		return processor.Process(seqId, iprot, oprot)
+	}
+	iprot.Skip(thrift.STRUCT)
+	iprot.ReadMessageEnd()
+	x1 := thrift.NewTApplicationException(thrift.UNKNOWN_METHOD, "Unknown function "+name)
+	oprot.WriteMessageBegin(name, thrift.EXCEPTION, seqId)
+	x1.Write(oprot)
+	oprot.WriteMessageEnd()
+	oprot.Flush()
+	return false, x1
+
+}
+
+type agentProcessorEmitZipkinBatch struct {
+	handler Agent
+}
+
+func (p *agentProcessorEmitZipkinBatch) Process(seqId int32, iprot, oprot thrift.TProtocol) (success bool, err thrift.TException) {
+	args := AgentEmitZipkinBatchArgs{}
+	if err = args.Read(iprot); err != nil {
+		iprot.ReadMessageEnd()
+		return false, err
+	}
+
+	iprot.ReadMessageEnd()
+	var err2 error
+	if err2 = p.handler.EmitZipkinBatch(args.Spans); err2 != nil {
+		return true, err2
+	}
+	return true, nil
+}
+
+type agentProcessorEmitBatch struct {
+	handler Agent
+}
+
+func (p *agentProcessorEmitBatch) Process(seqId int32, iprot, oprot thrift.TProtocol) (success bool, err thrift.TException) {
+	args := AgentEmitBatchArgs{}
+	if err = args.Read(iprot); err != nil {
+		iprot.ReadMessageEnd()
+		return false, err
+	}
+
+	iprot.ReadMessageEnd()
+	var err2 error
+	if err2 = p.handler.EmitBatch(args.Batch); err2 != nil {
+		return true, err2
+	}
+	return true, nil
+}
+
+// HELPER FUNCTIONS AND STRUCTURES
+
+// Attributes:
+//  - Spans
+type AgentEmitZipkinBatchArgs struct {
+	Spans []*zipkincore.Span `thrift:"spans,1" json:"spans"`
+}
+
+func NewAgentEmitZipkinBatchArgs() *AgentEmitZipkinBatchArgs {
+	return &AgentEmitZipkinBatchArgs{}
+}
+
+func (p *AgentEmitZipkinBatchArgs) GetSpans() []*zipkincore.Span {
+	return p.Spans
+}
+func (p *AgentEmitZipkinBatchArgs) Read(iprot thrift.TProtocol) error {
+	if _, err := iprot.ReadStructBegin(); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+	}
+
+	for {
+		_, fieldTypeId, fieldId, err := iprot.ReadFieldBegin()
+		if err != nil {
+			return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+		}
+		if fieldTypeId == thrift.STOP {
+			break
+		}
+		switch fieldId {
+		case 1:
+			if err := p.readField1(iprot); err != nil {
+				return err
+			}
+		default:
+			if err := iprot.Skip(fieldTypeId); err != nil {
+				return err
+			}
+		}
+		if err := iprot.ReadFieldEnd(); err != nil {
+			return err
+		}
+	}
+	if err := iprot.ReadStructEnd(); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+	}
+	return nil
+}
+
+func (p *AgentEmitZipkinBatchArgs) readField1(iprot thrift.TProtocol) error {
+	_, size, err := iprot.ReadListBegin()
+	if err != nil {
+		return thrift.PrependError("error reading list begin: ", err)
+	}
+	tSlice := make([]*zipkincore.Span, 0, size)
+	p.Spans = tSlice
+	for i := 0; i < size; i++ {
+		_elem2 := &zipkincore.Span{}
+		if err := _elem2.Read(iprot); err != nil {
+			return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", _elem2), err)
+		}
+		p.Spans = append(p.Spans, _elem2)
+	}
+	if err := iprot.ReadListEnd(); err != nil {
+		return thrift.PrependError("error reading list end: ", err)
+	}
+	return nil
+}
+
+func (p *AgentEmitZipkinBatchArgs) Write(oprot thrift.TProtocol) error {
+	if err := oprot.WriteStructBegin("emitZipkinBatch_args"); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err)
+	}
+	if err := p.writeField1(oprot); err != nil {
+		return err
+	}
+	if err := oprot.WriteFieldStop(); err != nil {
+		return thrift.PrependError("write field stop error: ", err)
+	}
+	if err := oprot.WriteStructEnd(); err != nil {
+		return thrift.PrependError("write struct stop error: ", err)
+	}
+	return nil
+}
+
+func (p *AgentEmitZipkinBatchArgs) writeField1(oprot thrift.TProtocol) (err error) {
+	if err := oprot.WriteFieldBegin("spans", thrift.LIST, 1); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:spans: ", p), err)
+	}
+	if err := oprot.WriteListBegin(thrift.STRUCT, len(p.Spans)); err != nil {
+		return thrift.PrependError("error writing list begin: ", err)
+	}
+	for _, v := range p.Spans {
+		if err := v.Write(oprot); err != nil {
+			return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", v), err)
+		}
+	}
+	if err := oprot.WriteListEnd(); err != nil {
+		return thrift.PrependError("error writing list end: ", err)
+	}
+	if err := oprot.WriteFieldEnd(); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T write field end error 1:spans: ", p), err)
+	}
+	return err
+}
+
+func (p *AgentEmitZipkinBatchArgs) String() string {
+	if p == nil {
+		return "<nil>"
+	}
+	return fmt.Sprintf("AgentEmitZipkinBatchArgs(%+v)", *p)
+}
+
+// Attributes:
+//  - Batch
+type AgentEmitBatchArgs struct {
+	Batch *jaeger.Batch `thrift:"batch,1" json:"batch"`
+}
+
+func NewAgentEmitBatchArgs() *AgentEmitBatchArgs {
+	return &AgentEmitBatchArgs{}
+}
+
+var AgentEmitBatchArgs_Batch_DEFAULT *jaeger.Batch
+
+func (p *AgentEmitBatchArgs) GetBatch() *jaeger.Batch {
+	if !p.IsSetBatch() {
+		return AgentEmitBatchArgs_Batch_DEFAULT
+	}
+	return p.Batch
+}
+func (p *AgentEmitBatchArgs) IsSetBatch() bool {
+	return p.Batch != nil
+}
+
+func (p *AgentEmitBatchArgs) Read(iprot thrift.TProtocol) error {
+	if _, err := iprot.ReadStructBegin(); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+	}
+
+	for {
+		_, fieldTypeId, fieldId, err := iprot.ReadFieldBegin()
+		if err != nil {
+			return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+		}
+		if fieldTypeId == thrift.STOP {
+			break
+		}
+		switch fieldId {
+		case 1:
+			if err := p.readField1(iprot); err != nil {
+				return err
+			}
+		default:
+			if err := iprot.Skip(fieldTypeId); err != nil {
+				return err
+			}
+		}
+		if err := iprot.ReadFieldEnd(); err != nil {
+			return err
+		}
+	}
+	if err := iprot.ReadStructEnd(); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+	}
+	return nil
+}
+
+func (p *AgentEmitBatchArgs) readField1(iprot thrift.TProtocol) error {
+	p.Batch = &jaeger.Batch{}
+	if err := p.Batch.Read(iprot); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", p.Batch), err)
+	}
+	return nil
+}
+
+func (p *AgentEmitBatchArgs) Write(oprot thrift.TProtocol) error {
+	if err := oprot.WriteStructBegin("emitBatch_args"); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err)
+	}
+	if err := p.writeField1(oprot); err != nil {
+		return err
+	}
+	if err := oprot.WriteFieldStop(); err != nil {
+		return thrift.PrependError("write field stop error: ", err)
+	}
+	if err := oprot.WriteStructEnd(); err != nil {
+		return thrift.PrependError("write struct stop error: ", err)
+	}
+	return nil
+}
+
+func (p *AgentEmitBatchArgs) writeField1(oprot thrift.TProtocol) (err error) {
+	if err := oprot.WriteFieldBegin("batch", thrift.STRUCT, 1); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:batch: ", p), err)
+	}
+	if err := p.Batch.Write(oprot); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", p.Batch), err)
+	}
+	if err := oprot.WriteFieldEnd(); err != nil {
+		return thrift.PrependError(fmt.Sprintf("%T write field end error 1:batch: ", p), err)
+	}
+	return err
+}
+
+func (p *AgentEmitBatchArgs) String() string {
+	if p == nil {
+		return "<nil>"
+	}
+	return fmt.Sprintf("AgentEmitBatchArgs(%+v)", *p)
+}

vendor/github.com/uber/jaeger-client-go/thrift-gen/agent/constants.go

@@ -0,0 +1,21 @@
+// Autogenerated by Thrift Compiler (0.9.3)
+// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+
+package agent
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/apache/thrift/lib/go/thrift"
+	"github.com/uber/jaeger-client-go/thrift-gen/zipkincore"
+)
+
+// (needed to ensure safety because of naive import list construction.)
+var _ = thrift.ZERO
+var _ = fmt.Printf
+var _ = bytes.Equal
+
+var _ = zipkincore.GoUnusedProtection__
+
+func init() {
+}

vendor/github.com/uber/jaeger-client-go/thrift-gen/agent/ttypes.go

@@ -0,0 +1,19 @@
+// Autogenerated by Thrift Compiler (0.9.3)
+// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+
+package agent
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/apache/thrift/lib/go/thrift"
+	"github.com/uber/jaeger-client-go/thrift-gen/zipkincore"
+)
+
+// (needed to ensure safety because of naive import list construction.)
+var _ = thrift.ZERO
+var _ = fmt.Printf
+var _ = bytes.Equal
+
+var _ = zipkincore.GoUnusedProtection__
+var GoUnusedProtection__ int