houston에 constlabel 설정 가능

client/operation.go

@@ -213,7 +213,7 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 		return err
 	}
 
-	stdReader := func(childProcName string, r io.ReadCloser, index int) {
+	stdReader := func(jobName string, r io.ReadCloser, index int) {
 		defer func() {
 			reco := recover()
 			if reco != nil {
@@ -308,7 +308,12 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 						if desc.ConstLabels == nil {
 							desc.ConstLabels = make(map[string]string)
 						}
-						desc.ConstLabels["index"] = fmt.Sprintf("%d", index)
+
+						for k, v := range hc.config.ConstLabels {
+							desc.ConstLabels[k] = v
+						}
+
+						desc.ConstLabels["job"] = jobName
 
 						metricExporter.RegisterMetric(&desc)
 					} else {