fix import

common/observer/dispatcher/direct_event_dispatcher.go

@@ -17,10 +17,13 @@
 
 package dispatcher
 
+import (
+	"reflect"
+)
+
 import (
 	"github.com/apache/dubbo-go/common/logger"
 	"github.com/apache/dubbo-go/common/observer"
-	"reflect"
 )
 
 func init() {

common/observer/event/ServiceInstancesChangedEvent.go

@@ -19,6 +19,9 @@ package event
 
 import (
 	"fmt"
+)
+
+import (
 	"github.com/apache/dubbo-go/common/observer"
 )
 

common/observer/event_dispatcher.go

@@ -17,7 +17,9 @@
 
 package observer
 
-import "github.com/prometheus/common/log"
+import (
+	"github.com/apache/dubbo-go/common/logger"
+)
 
 var globalEventDispatcher EventDispatcher
 
@@ -45,7 +47,7 @@ func SetAndInitGlobalDispatcher(name string) {
 		name = "direct"
 	}
 	if globalEventDispatcher != nil {
-		log.Warnf("EventDispatcher already init. It will be replaced")
+		logger.Warnf("EventDispatcher already init. It will be replaced")
 	}
 	if dispatchers[name] == nil {
 		panic("EventDispatcher for " + name + " is not existing, make sure you have import the package.")
@@ -54,7 +56,7 @@ func SetAndInitGlobalDispatcher(name string) {
 	globalEventDispatcher.AddEventListeners(eventListeners)
 }
 
-// GetGlobalDispatcher by name
+// GetGlobalDispatcher
 func GetGlobalDispatcher() EventDispatcher {
 	return globalEventDispatcher
 }

common/observer/event_listener.go

@@ -18,10 +18,13 @@
 package observer
 
 import (
-	gxsort "github.com/dubbogo/gost/sort"
 	"reflect"
 )
 
+import (
+	gxsort "github.com/dubbogo/gost/sort"
+)
+
 // All eventListeners
 var eventListeners []EventListener
 

common/observer/listenable_test.go

@@ -18,11 +18,14 @@
 package observer
 
 import (
-	"github.com/stretchr/testify/assert"
 	"reflect"
 	"testing"
 )
 
+import (
+	"github.com/stretchr/testify/assert"
+)
+
 func TestListenable(t *testing.T) {
 	el := &TestEventListener{}
 	b := &BaseListenable{}

registry/listener/ServiceInstancesChangedListener.go

@@ -17,10 +17,13 @@
 
 package listener
 
+import (
+	"reflect"
+)
+
 import (
 	"github.com/apache/dubbo-go/common/observer"
 	"github.com/apache/dubbo-go/common/observer/event"
-	"reflect"
 )
 
 func init() {