feat(influxdb): add alias to query

pkg/tsdb/influxdb/model_parser.go

@@ -13,6 +13,7 @@ func (qp *InfluxdbQueryParser) Parse(model *simplejson.Json, dsInfo *tsdb.DataSo
 	policy := model.Get("policy").MustString("default")
 	rawQuery := model.Get("query").MustString("")
 	interval := model.Get("interval").MustString("")
+	alias := model.Get("alias").MustString("")
 
 	measurement := model.Get("measurement").MustString("")
 
@@ -52,6 +53,7 @@ func (qp *InfluxdbQueryParser) Parse(model *simplejson.Json, dsInfo *tsdb.DataSo
 		Selects:      selects,
 		RawQuery:     rawQuery,
 		Interval:     interval,
+		Alias:        alias,
 	}, nil
 }
 

pkg/tsdb/influxdb/model_parser_test.go

@@ -90,6 +90,7 @@ func TestInfluxdbQueryParser(t *testing.T) {
             }
           ]
         ],
+        "alias": "serie alias",
         "tags": [
           {
             "key": "datacenter",
@@ -115,6 +116,7 @@ func TestInfluxdbQueryParser(t *testing.T) {
 			So(len(res.Selects), ShouldEqual, 3)
 			So(len(res.Tags), ShouldEqual, 2)
 			So(res.Interval, ShouldEqual, ">20s")
+			So(res.Alias, ShouldEqual, "serie alias")
 		})
 
 		Convey("can part raw query json model", func() {

pkg/tsdb/influxdb/models.go

@@ -8,6 +8,7 @@ type Query struct {
 	GroupBy      []*QueryPart
 	Selects      []*Select
 	RawQuery     string
+	Alias        string
 
 	Interval string
 }