Notifications: InfluxDB - Fix regex to include metrics with hyphen in aliases (#32224) (#32262)

* Notifications: InfluxDB - fix regex to include metrics with hyphen

* Add hyphen check in tests

(cherry picked from commit fdaac2b8fb)

pkg/tsdb/influxdb/response_parser.go

@@ -18,7 +18,7 @@ var (
 )
 
 func init() {
-	legendFormat = regexp.MustCompile(`\[\[(\w+)(\.\w+)*\]\]*|\$\s*(\w+?)*`)
+	legendFormat = regexp.MustCompile(`\[\[([\w-]+)(\.[\w-]+)*\]\]*|\$\s*([\w-]+?)*`)
 }
 
 func (rp *ResponseParser) Parse(response *Response, query *Query) *tsdb.QueryResult {
@@ -64,7 +64,6 @@ func (rp *ResponseParser) formatSeriesName(row Row, column string, query *Query)
 	if query.Alias == "" {
 		return rp.buildSeriesNameFromQuery(row, column)
 	}
-
 	nameSegment := strings.Split(row.Name, ".")
 
 	result := legendFormat.ReplaceAllFunc([]byte(query.Alias), func(in []byte) []byte {

pkg/tsdb/influxdb/response_parser_test.go

@@ -80,6 +80,7 @@ func TestInfluxdbResponseParser(t *testing.T) {
 								Tags: map[string]string{
 									"datacenter":     "America",
 									"dc.region.name": "Northeast",
+									"cluster-name":   "Cluster",
 								},
 								Values: [][]interface{}{
 									{json.Number("111"), json.Number("222"), json.Number("333")},
@@ -171,6 +172,13 @@ func TestInfluxdbResponseParser(t *testing.T) {
 
 					So(result.Series[0].Name, ShouldEqual, "alias Northeast")
 				})
+
+				Convey("tag alias with hyphens", func() {
+					query := &Query{Alias: "alias [[tag_cluster-name]]"}
+					result := parser.Parse(response, query)
+
+					So(result.Series[0].Name, ShouldEqual, "alias Cluster")
+				})
 			})
 		})