build: adds branch info to binary build

build.go

@@ -471,6 +471,7 @@ func ldflags() string {
 	b.WriteString(fmt.Sprintf(" -X main.version=%s", version))
 	b.WriteString(fmt.Sprintf(" -X main.commit=%s", getGitSha()))
 	b.WriteString(fmt.Sprintf(" -X main.buildstamp=%d", buildStamp()))
+	b.WriteString(fmt.Sprintf(" -X main.buildBranch=%s", getGitBranch()))
 	return b.String()
 }
 
@@ -518,6 +519,14 @@ func setBuildEnv() {
 	}
 }
 
+func getGitBranch() string {
+	v, err := runError("git", "rev-parse", "--abbrev-ref", "HEAD")
+	if err != nil {
+		return "master"
+	}
+	return string(v)
+}
+
 func getGitSha() string {
 	v, err := runError("git", "rev-parse", "--short", "HEAD")
 	if err != nil {

pkg/cmd/grafana-server/main.go

@@ -3,6 +3,8 @@ package main
 import (
 	"flag"
 	"fmt"
+	"net/http"
+	_ "net/http/pprof"
 	"os"
 	"os/signal"
 	"runtime"
@@ -11,16 +13,12 @@ import (
 	"syscall"
 	"time"
 
-	"net/http"
-	_ "net/http/pprof"
-
+	extensions "github.com/grafana/grafana/pkg/extensions"
 	"github.com/grafana/grafana/pkg/log"
 	"github.com/grafana/grafana/pkg/metrics"
-	"github.com/grafana/grafana/pkg/setting"
-
-	extensions "github.com/grafana/grafana/pkg/extensions"
 	_ "github.com/grafana/grafana/pkg/services/alerting/conditions"
 	_ "github.com/grafana/grafana/pkg/services/alerting/notifiers"
+	"github.com/grafana/grafana/pkg/setting"
 	_ "github.com/grafana/grafana/pkg/tsdb/cloudwatch"
 	_ "github.com/grafana/grafana/pkg/tsdb/elasticsearch"
 	_ "github.com/grafana/grafana/pkg/tsdb/graphite"
@@ -35,6 +33,7 @@ import (
 
 var version = "5.0.0"
 var commit = "NA"
+var buildBranch = "master"
 var buildstamp string
 
 var configFile = flag.String("config", "", "path to config file")
@@ -47,7 +46,7 @@ func main() {
 	profilePort := flag.Int("profile-port", 6060, "Define custom port for profiling")
 	flag.Parse()
 	if *v {
-		fmt.Printf("Version %s (commit: %s)\n", version, commit)
+		fmt.Printf("Version %s (commit: %s, branch: %s)\n", version, commit, buildBranch)
 		os.Exit(0)
 	}
 
@@ -78,6 +77,7 @@ func main() {
 	setting.BuildVersion = version
 	setting.BuildCommit = commit
 	setting.BuildStamp = buildstampInt64
+	setting.BuildBranch = buildBranch
 	setting.IsEnterprise = extensions.IsEnterprise
 
 	metrics.M_Grafana_Version.WithLabelValues(version).Set(1)

pkg/cmd/grafana-server/server.go

@@ -12,24 +12,16 @@ import (
 	"time"
 
 	"github.com/facebookgo/inject"
+	"github.com/grafana/grafana/pkg/api"
 	"github.com/grafana/grafana/pkg/api/routing"
 	"github.com/grafana/grafana/pkg/bus"
-	"github.com/grafana/grafana/pkg/middleware"
-	"github.com/grafana/grafana/pkg/registry"
-
-	"golang.org/x/sync/errgroup"
-
-	"github.com/grafana/grafana/pkg/api"
+	_ "github.com/grafana/grafana/pkg/extensions"
 	"github.com/grafana/grafana/pkg/log"
 	"github.com/grafana/grafana/pkg/login"
-	"github.com/grafana/grafana/pkg/setting"
-
-	"github.com/grafana/grafana/pkg/social"
-
-	// self registering services
-	_ "github.com/grafana/grafana/pkg/extensions"
 	_ "github.com/grafana/grafana/pkg/metrics"
+	"github.com/grafana/grafana/pkg/middleware"
 	_ "github.com/grafana/grafana/pkg/plugins"
+	"github.com/grafana/grafana/pkg/registry"
 	_ "github.com/grafana/grafana/pkg/services/alerting"
 	_ "github.com/grafana/grafana/pkg/services/cleanup"
 	_ "github.com/grafana/grafana/pkg/services/notifications"
@@ -37,7 +29,10 @@ import (
 	_ "github.com/grafana/grafana/pkg/services/rendering"
 	_ "github.com/grafana/grafana/pkg/services/search"
 	_ "github.com/grafana/grafana/pkg/services/sqlstore"
+	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/social" // self registering services
 	_ "github.com/grafana/grafana/pkg/tracing"
+	"golang.org/x/sync/errgroup"
 )
 
 func NewGrafanaServer() *GrafanaServerImpl {
@@ -159,7 +154,7 @@ func (g *GrafanaServerImpl) loadConfiguration() {
 		os.Exit(1)
 	}
 
-	g.log.Info("Starting "+setting.ApplicationName, "version", version, "commit", commit, "compiled", time.Unix(setting.BuildStamp, 0))
+	g.log.Info("Starting "+setting.ApplicationName, "version", version, "commit", commit, "branch", buildBranch, "compiled", time.Unix(setting.BuildStamp, 0))
 	g.cfg.LogConfigSources()
 }
 

pkg/setting/setting.go

@@ -13,15 +13,12 @@ import (
 	"regexp"
 	"runtime"
 	"strings"
-
-	"gopkg.in/ini.v1"
-
-	"github.com/go-macaron/session"
-
 	"time"
 
+	"github.com/go-macaron/session"
 	"github.com/grafana/grafana/pkg/log"
 	"github.com/grafana/grafana/pkg/util"
+	"gopkg.in/ini.v1"
 )
 
 type Scheme string
@@ -49,6 +46,7 @@ var (
 	// build
 	BuildVersion    string
 	BuildCommit     string
+	BuildBranch     string
 	BuildStamp      int64
 	IsEnterprise    bool
 	ApplicationName string