go services: do not fail (+retry) profiler init

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

src/shippingservice/main.go

@@ -23,6 +23,9 @@ const (
 )
 
 func main() {
+	go initTracing()
+	go initProfiling("shippingservice", "1.0.0")
+
 	port := defaultPort
 	if value, ok := os.LookupEnv("APP_PORT"); ok {
 		port = value
@@ -38,8 +41,6 @@ func main() {
 		log.Fatalf("failed to start profiler: %+v", err)
 	}
 
-	go initTracing()
-
 	lis, err := net.Listen("tcp", port)
 	if err != nil {
 		log.Fatalf("failed to listen: %v", err)
@@ -116,3 +117,22 @@ func initTracing() {
 	}
 	log.Printf("warning: could not initialize stackdriver exporter after retrying, giving up")
 }
+
+func initProfiling(service, version string) {
+	// TODO(ahmetb) this method is duplicated in other microservices using Go
+	// since they are not sharing packages.
+	for i := 1; i <= 3; i++ {
+		if err := profiler.Start(profiler.Config{
+			Service:        service,
+			ServiceVersion: version,
+			// ProjectID must be set if not running on GCP.
+			// ProjectID: "my-project",
+		}); err != nil {
+			log.Printf("warn: failed to start profiler: %+v", err)
+		}
+		d := time.Second * 10 * time.Duration(i)
+		log.Printf("sleeping %v to retry initializing stackdriver profiler", d)
+		time.Sleep(d)
+	}
+	log.Printf("warning: could not initialize stackdriver profiler after retrying, giving up")
+}