Add profiler for microsub server

cmd/eksterd/main.go

@@ -26,6 +26,7 @@ import (
 	"regexp"
 	"time"
 
+	"cloud.google.com/go/profiler"
 	"github.com/garyburd/redigo/redis"
 	"github.com/pstuifzand/ekster/pkg/microsub"
 )
@@ -58,6 +59,17 @@ func newPool(addr string) *redis.Pool {
 }
 
 func main() {
+
+	if os.Getenv("GOOGLE_APPLICATION_CREDENTIALS") != "" {
+		if err := profiler.Start(profiler.Config{
+			Service:        "microsub-server",
+			ServiceVersion: "1.0",
+			ProjectID:      "microsub-server", // optional on GCP
+		}); err != nil {
+			log.Fatalf("Cannot start the profiler: %v", err)
+		}
+	}
+
 	log.Println("eksterd - microsub server")
 	flag.Parse()