simplify metrics configuration logic

weed/server/filer_server.go

@@ -157,10 +157,7 @@ func maybeStartMetrics(fs *FilerServer, option *FilerOption) {
 	if metricsAddress == "" && metricsIntervalSec <= 0 {
 		return
 	}
-	go stats.LoopPushingMetric("filer", stats.SourceName(option.Port), stats.FilerGather,
-		func() (addr string, intervalSeconds int) {
-			return metricsAddress, metricsIntervalSec
-		})
+	go stats.LoopPushingMetric("filer", stats.SourceName(option.Port), stats.FilerGather, metricsAddress, metricsIntervalSec)
 }
 
 func readFilerConfiguration(grpcDialOption grpc.DialOption, masterAddress string) (metricsAddress string, metricsIntervalSec int, err error) {

weed/server/volume_server.go

@@ -98,10 +98,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 
 	go vs.heartbeat()
 	hostAddress := fmt.Sprintf("%s:%d", ip, port)
-	go stats.LoopPushingMetric("volumeServer", hostAddress, stats.VolumeServerGather,
-		func() (addr string, intervalSeconds int) {
-			return vs.MetricsAddress, vs.MetricsIntervalSec
-		})
+	go stats.LoopPushingMetric("volumeServer", hostAddress, stats.VolumeServerGather, vs.MetricsAddress, vs.MetricsIntervalSec)
 
 	return vs
 }

weed/stats/metrics.go

@@ -108,32 +108,23 @@ func init() {
 
 }
 
-func LoopPushingMetric(name, instance string, gatherer *prometheus.Registry, fnGetMetricsDest func() (addr string, intervalSeconds int)) {
+func LoopPushingMetric(name, instance string, gatherer *prometheus.Registry, addr string, intervalSeconds int) {
 
-	if fnGetMetricsDest == nil {
+	if addr == "" || intervalSeconds == 0 {
 		return
 	}
 
-	addr, intervalSeconds := fnGetMetricsDest()
 	pusher := push.New(addr, name).Gatherer(gatherer).Grouping("instance", instance)
-	currentAddr := addr
 
 	for {
-		if currentAddr != "" {
 		err := pusher.Push()
 		if err != nil && !strings.HasPrefix(err.Error(), "unexpected status code 200") {
 			glog.V(0).Infof("could not push metrics to prometheus push gateway %s: %v", addr, err)
 		}
-		}
 		if intervalSeconds <= 0 {
 			intervalSeconds = 15
 		}
 		time.Sleep(time.Duration(intervalSeconds) * time.Second)
-		addr, intervalSeconds = fnGetMetricsDest()
-		if currentAddr != addr {
-			pusher = push.New(addr, name).Gatherer(gatherer).Grouping("instance", instance)
-			currentAddr = addr
-		}
 
 	}
 }