Sync Catalog: Add k8s endpoint health state to consul health check

.changelog/3874.txt

@@ -0,0 +1,3 @@
+```release-note:sync-catalog
+Add Endpoint health state to registered consul service
+```

control-plane/catalog/to-consul/resource.go

@@ -46,6 +46,7 @@ const (
 	// consulKubernetesCheckName is the name of health check in Consul for Kubernetes readiness status.
 	consulKubernetesCheckName  = "Kubernetes Readiness Check"
 	kubernetesSuccessReasonMsg = "Kubernetes health checks passing"
+	kubernetesFailureReasonMsg = "Kubernetes health checks failing"
 )
 
 type NodePortSyncType string
@@ -693,7 +694,6 @@ func (t *ServiceResource) generateRegistrations(key string) {
 							}
 						}
 					}
-
 				}
 			}
 		}
@@ -800,11 +800,17 @@ func (t *ServiceResource) registerServiceInstance(
 					Name:      consulKubernetesCheckName,
 					Namespace: baseService.Namespace,
 					Type:      consulKubernetesCheckType,
-					Status:    consulapi.HealthPassing,
 					ServiceID: serviceID(r.Service.Service, addr),
-					Output:    kubernetesSuccessReasonMsg,
 				}
 
+				// Consider endpoint health state for registered consul service
+				if endpoint.Conditions.Ready != nil && *endpoint.Conditions.Ready {
+					r.Check.Status = consulapi.HealthPassing
+					r.Check.Output = kubernetesSuccessReasonMsg
+				} else {
+					r.Check.Status = consulapi.HealthCritical
+					r.Check.Output = kubernetesFailureReasonMsg
+				}
 				t.consulMap[key] = append(t.consulMap[key], &r)
 			}
 		}

control-plane/catalog/to-consul/resource_test.go

@@ -2141,7 +2141,7 @@ func createEndpointSlice(t *testing.T, client *fake.Clientset, serviceName strin
 				{
 					Addresses: []string{"1.1.1.1"},
 					Conditions: discoveryv1.EndpointConditions{
-						Ready:       ptr.To(true),
+						Ready:       nil,
 						Serving:     ptr.To(true),
 						Terminating: ptr.To(false),
 					},
@@ -2154,11 +2154,22 @@ func createEndpointSlice(t *testing.T, client *fake.Clientset, serviceName strin
 					Conditions: discoveryv1.EndpointConditions{
 						Ready:       ptr.To(true),
 						Serving:     ptr.To(true),
-						Terminating: ptr.To(false),
+						Terminating: nil,
 					},
 					NodeName: &node2,
 					Zone:     ptr.To("us-west-2b"),
 				},
+				{
+					Addresses: []string{"3.3.3.3"},
+					Conditions: discoveryv1.EndpointConditions{
+						Ready:       ptr.To(false),
+						Serving:     ptr.To(false),
+						Terminating: ptr.To(true),
+					},
+					TargetRef: &targetRef,
+					NodeName:  &node1,
+					Zone:      ptr.To("us-west-2a"),
+				},
 			},
 			Ports: []discoveryv1.EndpointPort{
 				{