Add more pprof labels to consumers, sources, mirrors

Signed-off-by: Neil Twigg <neil@nats.io>

server/consumer.go

@@ -1255,15 +1255,32 @@ func (o *consumer) setLeader(isLeader bool) {
 		// Snapshot initial info.
 		o.infoWithSnap(true)
 
+		// These are the labels we will use to annotate our goroutines.
+		labels := pprofLabels{
+			"type":     "consumer",
+			"account":  mset.accName(),
+			"stream":   mset.name(),
+			"consumer": o.name,
+		}
+
 		// Now start up Go routine to deliver msgs.
-		go o.loopAndGatherMsgs(qch)
+		go func() {
+			setGoRoutineLabels(labels)
+			o.loopAndGatherMsgs(qch)
+		}()
 
 		// Now start up Go routine to process acks.
-		go o.processInboundAcks(qch)
+		go func() {
+			setGoRoutineLabels(labels)
+			o.processInboundAcks(qch)
+		}()
 
 		if pullMode {
 			// Now start up Go routine to process inbound next message requests.
-			go o.processInboundNextMsgReqs(qch)
+			go func() {
+				setGoRoutineLabels(labels)
+				o.processInboundNextMsgReqs(qch)
+			}()
 		}
 
 		// If we are R>1 spin up our proposal loop.
@@ -1272,7 +1289,10 @@ func (o *consumer) setLeader(isLeader bool) {
 			// They must be on server versions >= 2.7.1
 			o.checkAndSetPendingRequestsOk()
 			o.checkPendingRequests()
-			go o.loopAndForwardProposals(qch)
+			go func() {
+				setGoRoutineLabels(labels)
+				o.loopAndForwardProposals(qch)
+			}()
 		}
 
 	} else {

server/server.go

@@ -3608,22 +3608,28 @@ func (s *Server) String() string {
 
 type pprofLabels map[string]string
 
+func setGoRoutineLabels(tags ...pprofLabels) {
+	var labels []string
+	for _, m := range tags {
+		for k, v := range m {
+			labels = append(labels, k, v)
+		}
+	}
+	if len(labels) > 0 {
+		pprof.SetGoroutineLabels(
+			pprof.WithLabels(context.Background(), pprof.Labels(labels...)),
+		)
+	}
+}
+
 func (s *Server) startGoRoutine(f func(), tags ...pprofLabels) bool {
 	var started bool
 	s.grMu.Lock()
 	defer s.grMu.Unlock()
 	if s.grRunning {
-		var labels []string
-		for _, m := range tags {
-			for k, v := range m {
-				labels = append(labels, k, v)
-			}
-		}
 		s.grWG.Add(1)
 		go func() {
-			pprof.SetGoroutineLabels(
-				pprof.WithLabels(context.Background(), pprof.Labels(labels...)),
-			)
+			setGoRoutineLabels(tags...)
 			f()
 		}()
 		started = true

server/stream.go

@@ -2635,9 +2635,10 @@ func (mset *stream) setupMirrorConsumer() error {
 				if !mset.srv.startGoRoutine(
 					func() { mset.processMirrorMsgs(mirror, &ready) },
 					pprofLabels{
-						"type":    "mirror",
-						"account": mset.acc.Name,
-						"stream":  mset.cfg.Name,
+						"type":     "mirror",
+						"account":  mset.acc.Name,
+						"stream":   mset.cfg.Name,
+						"consumer": mirror.cname,
 					},
 				) {
 					ready.Done()
@@ -2965,9 +2966,10 @@ func (mset *stream) setSourceConsumer(iname string, seq uint64, startTime time.T
 					if !mset.srv.startGoRoutine(
 						func() { mset.processSourceMsgs(si, &ready) },
 						pprofLabels{
-							"type":    "source",
-							"account": mset.acc.Name,
-							"stream":  mset.cfg.Name,
+							"type":     "source",
+							"account":  mset.acc.Name,
+							"stream":   mset.cfg.Name,
+							"consumer": si.cname,
 						},
 					) {
 						ready.Done()