optimized code

backend/apps/handler.go

@@ -2,6 +2,7 @@ package apps
 
 import (
 	"github.com/apex/log"
+	"github.com/crawlab-team/crawlab-core/config"
 	"github.com/crawlab-team/crawlab-core/grpc"
 )
 
@@ -9,11 +10,18 @@ type Handler struct {
 }
 
 func (app *Handler) Init() {
+	// config
+	_ = initModule("config", config.InitConfig)
+
+	// grpc
 	_ = initModule("grpc", grpc.InitGrpcServices)
 }
 
-func (app *Handler) Run() {
-	log.Info("handler has started")
+func (app *Handler) Start() {
+}
+
+func (app *Handler) Wait() {
+	DefaultWait()
 }
 
 func (app *Handler) Stop() {