feat(influxdb): support raw queries in alerting

ref #6231

pkg/tsdb/influxdb/model_parser.go

@@ -10,6 +10,7 @@ type InfluxdbQueryParser struct{}
 
 func (qp *InfluxdbQueryParser) Parse(model *simplejson.Json) (*Query, error) {
 	policy := model.Get("policy").MustString("default")
+	rawQuery := model.Get("query").MustString("")
 
 	measurement, err := model.Get("measurement").String()
 	if err != nil {
@@ -43,6 +44,7 @@ func (qp *InfluxdbQueryParser) Parse(model *simplejson.Json) (*Query, error) {
 		GroupBy:      groupBys,
 		Tags:         tags,
 		Selects:      selects,
+		RawQuery:     rawQuery,
 	}, nil
 }
 

pkg/tsdb/influxdb/model_parser_test.go

@@ -111,5 +111,61 @@ func TestInfluxdbQueryParser(t *testing.T) {
 			So(len(res.Selects), ShouldEqual, 3)
 			So(len(res.Tags), ShouldEqual, 2)
 		})
+
+		Convey("can part raw query json model", func() {
+			json := `
+      {
+        "dsType": "influxdb",
+        "groupBy": [
+          {
+            "params": [
+              "$interval"
+            ],
+            "type": "time"
+          },
+          {
+            "params": [
+              "null"
+            ],
+            "type": "fill"
+          }
+        ],
+        "policy": "default",
+        "query": "RawDummieQuery",
+        "rawQuery": true,
+        "refId": "A",
+        "resultFormat": "time_series",
+        "select": [
+          [
+            {
+              "params": [
+                "value"
+              ],
+              "type": "field"
+            },
+            {
+              "params": [
+
+              ],
+              "type": "mean"
+            }
+          ]
+        ],
+        "tags": [
+
+        ]
+      }
+      `
+
+			modelJson, err := simplejson.NewJson([]byte(json))
+			So(err, ShouldBeNil)
+
+			res, err := parser.Parse(modelJson)
+			So(err, ShouldBeNil)
+			So(res.RawQuery, ShouldEqual, "RawDummieQuery")
+			So(len(res.GroupBy), ShouldEqual, 2)
+			So(len(res.Selects), ShouldEqual, 2)
+			So(len(res.Tags), ShouldEqual, 0)
+		})
 	})
 }

pkg/tsdb/influxdb/models.go

@@ -7,6 +7,7 @@ type Query struct {
 	Tags         []*Tag
 	GroupBy      []*QueryPart
 	Selects      []*Select
+	RawQuery     string
 
 	Interval string
 }

pkg/tsdb/influxdb/query_builder.go

@@ -10,6 +10,15 @@ import (
 type QueryBuilder struct{}
 
 func (qb *QueryBuilder) Build(query *Query, queryContext *tsdb.QueryContext) (string, error) {
+	if query.RawQuery != "" {
+		q := query.RawQuery
+
+		q = strings.Replace(q, "$timeFilter", qb.renderTimeFilter(query, queryContext), 1)
+		q = strings.Replace(q, "$interval", tsdb.CalculateInterval(queryContext.TimeRange), 1)
+
+		return q, nil
+	}
+
 	res := qb.renderSelectors(query, queryContext)
 	res += qb.renderMeasurement(query)
 	res += qb.renderWhereClause(query)

pkg/tsdb/influxdb/query_builder_test.go

@@ -68,5 +68,20 @@ func TestInfluxdbQueryBuilder(t *testing.T) {
 				So(builder.renderTimeFilter(&query, queryContext), ShouldEqual, "time > now() - 10m")
 			})
 		})
+
+		Convey("can build query from raw query", func() {
+			query := &Query{
+				Selects:     []*Select{{*qp1, *qp2}},
+				Measurement: "cpu",
+				Policy:      "policy",
+				GroupBy:     []*QueryPart{groupBy1, groupBy3},
+				Interval:    "10s",
+				RawQuery:    "Raw query",
+			}
+
+			rawQuery, err := builder.Build(query, queryContext)
+			So(err, ShouldBeNil)
+			So(rawQuery, ShouldEqual, `Raw query`)
+		})
 	})
 }