work suspension: emit event for work dispatch status

pkg/controllers/execution/execution_controller.go

@@ -52,6 +52,10 @@ import (
 const (
 	// ControllerName is the controller name that will be used when reporting events.
 	ControllerName = "execution-controller"
+	// WorkSuspendDispatchingConditionMessage is the condition and event message when dispatching is suspended.
+	WorkSuspendDispatchingConditionMessage = "Work dispatching is in a suspended state."
+	// WorkDispatchingConditionMessage is the condition and event message when dispatching is not suspended.
+	WorkDispatchingConditionMessage = "Work is being dispatched to member clusters."
 	// workSuspendDispatchingConditionReason is the reason for the WorkDispatching condition when dispatching is suspended.
 	workSuspendDispatchingConditionReason = "SuspendDispatching"
 	// workDispatchingConditionReason is the reason for the WorkDispatching condition when dispatching is not suspended.
@@ -270,18 +274,28 @@ func (c *Controller) updateWorkDispatchingConditionIfNeeded(ctx context.Context,
 	if helper.IsWorkSuspendDispatching(work) {
 		newWorkDispatchingCondition.Status = metav1.ConditionFalse
 		newWorkDispatchingCondition.Reason = workSuspendDispatchingConditionReason
-		newWorkDispatchingCondition.Message = "Work dispatching is in a suspended state."
+		newWorkDispatchingCondition.Message = WorkSuspendDispatchingConditionMessage
 	} else {
 		newWorkDispatchingCondition.Status = metav1.ConditionTrue
 		newWorkDispatchingCondition.Reason = workDispatchingConditionReason
-		newWorkDispatchingCondition.Message = "Work is being dispatched to member clusters."
+		newWorkDispatchingCondition.Message = WorkDispatchingConditionMessage
 	}
 
 	if meta.IsStatusConditionPresentAndEqual(work.Status.Conditions, newWorkDispatchingCondition.Type, newWorkDispatchingCondition.Status) {
 		return nil
 	}
 
-	return c.setStatusCondition(ctx, work, newWorkDispatchingCondition)
+	if err := c.setStatusCondition(ctx, work, newWorkDispatchingCondition); err != nil {
+		return err
+	}
+
+	obj, err := helper.ToUnstructured(work)
+	if err != nil {
+		return err
+	}
+
+	c.eventf(obj, corev1.EventTypeNormal, events.EventReasonWorkDispatching, newWorkDispatchingCondition.Message)
+	return nil
 }
 
 // updateAppliedCondition updates the applied condition for the given Work.

pkg/controllers/execution/execution_controller_test.go

@@ -17,19 +17,24 @@ package execution
 
 import (
 	"context"
+	"encoding/json"
+	"fmt"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/uuid"
+	"k8s.io/client-go/tools/record"
 	"k8s.io/utils/ptr"
 	controllerruntime "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client/fake"
 
 	clusterv1alpha1 "github.com/karmada-io/karmada/pkg/apis/cluster/v1alpha1"
 	workv1alpha1 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha1"
+	"github.com/karmada-io/karmada/pkg/events"
 	"github.com/karmada-io/karmada/pkg/util/fedinformer/genericmanager"
 	"github.com/karmada-io/karmada/pkg/util/gclient"
 	"github.com/karmada-io/karmada/pkg/util/helper"
@@ -38,34 +43,50 @@ import (
 
 func TestExecutionController_Reconcile(t *testing.T) {
 	tests := []struct {
-		name            string
-		work            *workv1alpha1.Work
-		ns              string
-		expectRes       controllerruntime.Result
-		expectCondition *metav1.Condition
-		existErr        bool
+		name               string
+		work               *workv1alpha1.Work
+		ns                 string
+		expectRes          controllerruntime.Result
+		expectCondition    *metav1.Condition
+		expectEventMessage string
+		existErr           bool
 	}{
 		{
-			name: "work dispatching is suspended, no error, no apply",
-			work: newWork(func(work *workv1alpha1.Work) {
-				work.Spec.SuspendDispatching = ptr.To(true)
-			}),
+			name:      "work dispatching is suspended, no error, no apply",
 			ns:        "karmada-es-cluster",
 			expectRes: controllerruntime.Result{},
 			existErr:  false,
+			work: newWork(func(work *workv1alpha1.Work) {
+				work.Spec.SuspendDispatching = ptr.To(true)
+			}),
+		},
+		{
+			name:            "work dispatching is suspended, adds false dispatching condition",
+			ns:              "karmada-es-cluster",
+			expectRes:       controllerruntime.Result{},
+			expectCondition: &metav1.Condition{Type: workv1alpha1.WorkDispatching, Status: metav1.ConditionFalse},
+			existErr:        false,
+
+			work: newWork(func(w *workv1alpha1.Work) {
+				w.Spec.SuspendDispatching = ptr.To(true)
+			}),
 		},
 		{
-			name: "work dispatching is suspended, adds false dispatching condition",
+			name:               "work dispatching is suspended, adds event message",
+			ns:                 "karmada-es-cluster",
+			expectRes:          controllerruntime.Result{},
+			expectEventMessage: fmt.Sprintf("%s %s %s", corev1.EventTypeNormal, events.EventReasonWorkDispatching, WorkSuspendDispatchingConditionMessage),
+			existErr:           false,
 			work: newWork(func(w *workv1alpha1.Work) {
 				w.Spec.SuspendDispatching = ptr.To(true)
 			}),
+		},
+		{
+			name:            "work dispatching is suspended, overwrites existing dispatching condition",
 			ns:              "karmada-es-cluster",
 			expectRes:       controllerruntime.Result{},
 			expectCondition: &metav1.Condition{Type: workv1alpha1.WorkDispatching, Status: metav1.ConditionFalse},
 			existErr:        false,
-		},
-		{
-			name: "work dispatching is suspended, overwrites existing dispatching condition",
 			work: newWork(func(w *workv1alpha1.Work) {
 				w.Spec.SuspendDispatching = ptr.To(true)
 				meta.SetStatusCondition(&w.Status.Conditions, metav1.Condition{
@@ -74,10 +95,6 @@ func TestExecutionController_Reconcile(t *testing.T) {
 					Reason: workDispatchingConditionReason,
 				})
 			}),
-			ns:              "karmada-es-cluster",
-			expectRes:       controllerruntime.Result{},
-			expectCondition: &metav1.Condition{Type: workv1alpha1.WorkDispatching, Status: metav1.ConditionFalse},
-			existErr:        false,
 		},
 	}
 
@@ -90,7 +107,8 @@ func TestExecutionController_Reconcile(t *testing.T) {
 				},
 			}
 
-			c := newController(tt.work)
+			eventRecorder := record.NewFakeRecorder(1)
+			c := newController(tt.work, eventRecorder)
 			res, err := c.Reconcile(context.Background(), req)
 			assert.Equal(t, tt.expectRes, res)
 			if tt.existErr {
@@ -103,21 +121,30 @@ func TestExecutionController_Reconcile(t *testing.T) {
 				assert.NoError(t, c.Client.Get(context.Background(), req.NamespacedName, tt.work))
 				assert.True(t, meta.IsStatusConditionPresentAndEqual(tt.work.Status.Conditions, tt.expectCondition.Type, tt.expectCondition.Status))
 			}
+
+			if tt.expectEventMessage != "" {
+				assert.Equal(t, 1, len(eventRecorder.Events))
+				e := <-eventRecorder.Events
+				assert.Equal(t, tt.expectEventMessage, e)
+			}
 		})
 	}
 }
 
-func newController(work *workv1alpha1.Work) Controller {
+func newController(work *workv1alpha1.Work, eventRecorder *record.FakeRecorder) Controller {
 	cluster := newCluster("cluster", clusterv1alpha1.ClusterConditionReady, metav1.ConditionTrue)
 	return Controller{
 		Client:          fake.NewClientBuilder().WithScheme(gclient.NewSchema()).WithObjects(cluster, work).WithStatusSubresource(work).Build(),
 		InformerManager: genericmanager.GetInstance(),
 		PredicateFunc:   helper.NewClusterPredicateOnAgent("test"),
+		EventRecorder:   eventRecorder,
 	}
 }
 
 func newWork(applyFunc func(work *workv1alpha1.Work)) *workv1alpha1.Work {
-	work := testhelper.NewWork("work", "karmada-es-cluster", string(uuid.NewUUID()), nil)
+	pod := testhelper.NewPod("default", "test")
+	bytes, _ := json.Marshal(pod)
+	work := testhelper.NewWork("work", "karmada-es-cluster", string(uuid.NewUUID()), bytes)
 	if applyFunc != nil {
 		applyFunc(work)
 	}

pkg/events/events.go

@@ -54,6 +54,8 @@ const (
 	EventReasonSyncWorkloadFailed = "SyncFailed"
 	// EventReasonSyncWorkloadSucceed indicates that Sync workload succeed.
 	EventReasonSyncWorkloadSucceed = "SyncSucceed"
+	// EventReasonWorkDispatching indicates that work is dispatching or not.
+	EventReasonWorkDispatching = "WorkDispatching"
 )
 
 // Define events for ResourceBinding and ClusterResourceBinding objects.

pkg/util/lifted/corev1printers.go

@@ -21,11 +21,10 @@ import (
 	"strings"
 	"time"
 
-	"k8s.io/apimachinery/pkg/util/duration"
-
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/util/duration"
 	"k8s.io/apimachinery/pkg/util/sets"
 
 	"github.com/karmada-io/karmada/pkg/printers"

pkg/util/lifted/scheduler/cache/cache.go

@@ -489,7 +489,6 @@ func (cache *cacheImpl) removePod(pod *corev1.Pod) error {
 	n, ok := cache.nodes[pod.Spec.NodeName]
 	if !ok {
 		klog.ErrorS(nil, "Node not found when trying to remove pod", "node", klog.KRef("", pod.Spec.NodeName), "podKey", key, "pod", klog.KObj(pod))
-
 	} else {
 		if err := n.info.RemovePod(pod); err != nil {
 			return err

pkg/util/lifted/validatingfhpa.go

@@ -266,7 +266,6 @@ func validateMetricSpec(spec autoscalingv2.MetricSpec, fldPath *field.Path) fiel
 
 	var expectedField string
 	switch spec.Type {
-
 	case autoscalingv2.ObjectMetricSourceType:
 		if spec.Object == nil {
 			allErrs = append(allErrs, field.Required(fldPath.Child("object"), "must populate information for the given metric source"))

test/e2e/framework/events.go

@@ -0,0 +1,39 @@
+/*
+Copyright 2024 The Karmada Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package framework
+
+import (
+	"context"
+	"slices"
+
+	"github.com/onsi/gomega"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/client-go/kubernetes"
+)
+
+// WaitEventFitWith wait PropagationPolicy sync with fit func.
+func WaitEventFitWith(kubeClient kubernetes.Interface, namespace string, involvedObj string, fit func(policy corev1.Event) bool) {
+	gomega.Eventually(func() bool {
+		eventList, err := kubeClient.CoreV1().Events(namespace).List(context.TODO(), metav1.ListOptions{
+			FieldSelector: fields.OneTermEqualSelector("involvedObject.name", involvedObj).String(),
+		})
+		gomega.Expect(err).ShouldNot(gomega.HaveOccurred())
+		return slices.ContainsFunc(eventList.Items, fit)
+	}, pollTimeout, pollInterval).Should(gomega.Equal(true))
+}

test/e2e/propagationpolicy_test.go

@@ -44,6 +44,8 @@ import (
 	policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
 	workv1alpha1 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha1"
 	workv1alpha2 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2"
+	"github.com/karmada-io/karmada/pkg/controllers/execution"
+	"github.com/karmada-io/karmada/pkg/events"
 	"github.com/karmada-io/karmada/pkg/util/helper"
 	"github.com/karmada-io/karmada/pkg/util/names"
 	"github.com/karmada-io/karmada/test/e2e/framework"
@@ -100,6 +102,15 @@ var _ = ginkgo.Describe("[BasicPropagation] propagation testing", func() {
 					return *deployment.Spec.Replicas == updateDeploymentReplicas
 				})
 		})
+
+		ginkgo.It("adds dispatching event with a dispatching message", func() {
+			workName := names.GenerateWorkName(deployment.Kind, deployment.Name, deployment.Namespace)
+			esName := names.GenerateExecutionSpaceName(framework.ClusterNames()[0])
+			framework.WaitEventFitWith(kubeClient, esName, workName, func(event corev1.Event) bool {
+				return event.Reason == events.EventReasonWorkDispatching &&
+					event.Message == execution.WorkDispatchingConditionMessage
+			})
+		})
 	})
 
 	ginkgo.Context("Service propagation testing", func() {
@@ -1170,7 +1181,7 @@ var _ = ginkgo.Describe("[Suspend] PropagationPolicy testing", func() {
 			}, pollTimeout, pollInterval).Should(gomega.Equal(true))
 		})
 
-		ginkgo.It("adds suspend dispatching condition to Work\"", func() {
+		ginkgo.It("adds suspend dispatching condition to Work", func() {
 			workName := names.GenerateWorkName(deployment.Kind, deployment.Name, deployment.Namespace)
 			esName := names.GenerateExecutionSpaceName(targetMember)
 			gomega.Eventually(func() bool {
@@ -1181,5 +1192,14 @@ var _ = ginkgo.Describe("[Suspend] PropagationPolicy testing", func() {
 				return work != nil && meta.IsStatusConditionPresentAndEqual(work.Status.Conditions, workv1alpha1.WorkDispatching, metav1.ConditionFalse)
 			}, pollTimeout, pollInterval).Should(gomega.Equal(true))
 		})
+
+		ginkgo.It("adds dispatching event with suspend message", func() {
+			workName := names.GenerateWorkName(deployment.Kind, deployment.Name, deployment.Namespace)
+			esName := names.GenerateExecutionSpaceName(targetMember)
+			framework.WaitEventFitWith(kubeClient, esName, workName, func(event corev1.Event) bool {
+				return event.Reason == events.EventReasonWorkDispatching &&
+					event.Message == execution.WorkSuspendDispatchingConditionMessage
+			})
+		})
 	})
 })

test/helper/resource.go

@@ -960,6 +960,10 @@ func NewPodDisruptionBudget(namespace, name string, maxUnAvailable intstr.IntOrS
 // NewWork will build a new Work object.
 func NewWork(workName, workNs, workUID string, raw []byte) *workv1alpha1.Work {
 	work := &workv1alpha1.Work{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       workv1alpha1.ResourceKindWork,
+			APIVersion: workv1alpha1.GroupVersion.Version,
+		},
 		ObjectMeta: metav1.ObjectMeta{
 			Name:      workName,
 			Namespace: workNs,