houston에 constlabel 설정 가능

client/client.go

@@ -32,10 +32,11 @@ import (
 )
 
 type clientConfig struct {
-	GrpcAddress     string `json:"grpc_server_address"`
-	HttpAddress     string `json:"http_server_address"`
-	StorageRoot     string `json:"storage_path"`
-	MetricNamespace string `json:"metric_namespace"`
+	GrpcAddress     string            `json:"grpc_server_address"`
+	HttpAddress     string            `json:"http_server_address"`
+	StorageRoot     string            `json:"storage_path"`
+	MetricNamespace string            `json:"metric_namespace"`
+	ConstLabels     map[string]string `json:"metric_const_labels"`
 }
 
 func loadClientConfig() (clientConfig, error) {
@@ -157,7 +158,7 @@ func gatherDeployedPrograms(storageRoot, name string) (out []*protos.VersionAndA
 	sort.Slice(rawvers, func(i, j int) bool {
 		return rawvers[i].modTime.After(rawvers[j].modTime)
 	})
-	
+
 	for _, v := range rawvers {
 		out = append(out, v.VersionAndArgs)
 	}

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 {