diff --git a/pkg/exporter/kube_events_exporter.go b/pkg/exporter/kube_events_exporter.go
index 288b257..dfd06ba 100644
--- a/pkg/exporter/kube_events_exporter.go
+++ b/pkg/exporter/kube_events_exporter.go
@@ -35,6 +35,8 @@ type K8sEventSource struct {
 	inf       cache.SharedIndexInformer
 	sinkers   []types.Sinker
 	mutex     sync.Mutex
+
+	cluster string
 }
 
 func (s *K8sEventSource) ReloadConfig(c *config.ExporterConfig) {
@@ -49,9 +51,9 @@ func (s *K8sEventSource) ReloadConfig(c *config.ExporterConfig) {
 
 	for _, w := range c.Sinks.Webhooks {
 		if w.Url != "" {
-			sinkers = append(sinkers, &sinks.WebhookSinker{Url: w.Url, Cluster: s.getClusterName()})
+			sinkers = append(sinkers, &sinks.WebhookSinker{Url: w.Url})
 		} else if w.Service != nil {
-			sinkers = append(sinkers, &sinks.WebhookSinker{Cluster: s.getClusterName(), Url: fmt.Sprintf("http://%s.%s.svc:%d/%s",
+			sinkers = append(sinkers, &sinks.WebhookSinker{Url: fmt.Sprintf("http://%s.%s.svc:%d/%s",
 				w.Service.Name, w.Service.Namespace, *w.Service.Port, w.Service.Path)})
 		}
 	}
@@ -155,12 +157,21 @@ func (s *K8sEventSource) sinkEvents(ctx context.Context) {
 					s.workqueue.Done(evt)
 				}
 			}()
+
+			events := types.Events{}
+			for _, e := range evts {
+				events.KubeEvents = append(events.KubeEvents, &types.ExtendedEvent{
+					Event:   e,
+					Cluster: s.cluster,
+				})
+			}
+
 			evtSinkers := s.getSinkers()
 			if len(evtSinkers) == 0 {
 				return
 			}
 			for _, sinker := range evtSinkers {
-				if err = sinker.Sink(ctx, evts); err != nil {
+				if err = sinker.Sink(ctx, events); err != nil {
 					err = fmt.Errorf("error sinking events: %v", err)
 					klog.Error(err)
 					return
@@ -196,5 +207,7 @@ func NewKubeEventSource(client *kubernetes.Clientset) *K8sEventSource {
 		},
 	})
 
+	s.cluster = s.getClusterName()
+
 	return s
 }
diff --git a/pkg/exporter/sinks/stdout.go b/pkg/exporter/sinks/stdout.go
index 3e554a7..163a254 100644
--- a/pkg/exporter/sinks/stdout.go
+++ b/pkg/exporter/sinks/stdout.go
@@ -5,14 +5,14 @@ import (
 	"encoding/json"
 	"fmt"
 
-	v1 "k8s.io/api/core/v1"
+	"github.com/kubesphere/kube-events/pkg/exporter/types"
 )
 
 type StdoutSinker struct {
 }
 
-func (s *StdoutSinker) Sink(ctx context.Context, evts []*v1.Event) error {
-	for _, evt := range evts {
+func (s *StdoutSinker) Sink(ctx context.Context, evts types.Events) error {
+	for _, evt := range evts.KubeEvents {
 		bs, err := json.Marshal(evt)
 		if err != nil {
 			return err
diff --git a/pkg/exporter/sinks/webhook.go b/pkg/exporter/sinks/webhook.go
index 4da51e7..f16cfe5 100644
--- a/pkg/exporter/sinks/webhook.go
+++ b/pkg/exporter/sinks/webhook.go
@@ -7,8 +7,9 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/kubesphere/kube-events/pkg/exporter/types"
+
 	"github.com/kubesphere/kube-events/pkg/util"
-	v1 "k8s.io/api/core/v1"
 )
 
 type WebhookSinker struct {
@@ -16,19 +17,10 @@ type WebhookSinker struct {
 	Cluster string
 }
 
-type extendedEvent struct {
-	*v1.Event `json:",inline"`
-	Cluster   string `json:"cluster,omitempty"`
-}
-
-func (s *WebhookSinker) Sink(ctx context.Context, evts []*v1.Event) error {
+func (s *WebhookSinker) Sink(ctx context.Context, evts types.Events) error {
 	var buf bytes.Buffer
-	for _, evt := range evts {
-		extendedEvt := extendedEvent{
-			Event:   evt,
-			Cluster: s.Cluster,
-		}
-		if bs, err := json.Marshal(extendedEvt); err != nil {
+	for _, evt := range evts.KubeEvents {
+		if bs, err := json.Marshal(evt); err != nil {
 			return err
 		} else if _, err := buf.Write(bs); err != nil {
 			return err
diff --git a/pkg/exporter/types/types.go b/pkg/exporter/types/types.go
index 93ed937..4ab526d 100644
--- a/pkg/exporter/types/types.go
+++ b/pkg/exporter/types/types.go
@@ -7,9 +7,14 @@ import (
 )
 
 type Events struct {
-	KubeEvents []*v1.Event `json:"kubeEvents"`
+	KubeEvents []*ExtendedEvent `json:"kubeEvents"`
+}
+
+type ExtendedEvent struct {
+	*v1.Event `json:",inline"`
+	Cluster   string `json:"cluster,omitempty"`
 }
 
 type Sinker interface {
-	Sink(ctx context.Context, events []*v1.Event) error
+	Sink(ctx context.Context, events Events) error
 }