Merge pull request kubernetes#125444 from babugeet/babugeet-patch-1

Added logic to check portnumber by name in sidecar container (init)

Author: k8s-ci-robot

staging/src/k8s.io/kubectl/pkg/util/pod_port.go

@@ -31,6 +31,12 @@ func LookupContainerPortNumberByName(pod v1.Pod, name string) (int32, error) {
 			}
 		}
 	}
-
+	for _, ctr := range pod.Spec.InitContainers {
+		for _, ctrportspec := range ctr.Ports {
+			if ctrportspec.Name == name {
+				return ctrportspec.ContainerPort, nil
+			}
+		}
+	}
 	return int32(-1), fmt.Errorf("Pod '%s' does not have a named port '%s'", pod.Name, name)
 }

staging/src/k8s.io/kubectl/pkg/util/pod_port_test.go

@@ -71,6 +71,67 @@ func TestLookupContainerPortNumberByName(t *testing.T) {
 			portnum:  int32(0),
 			err:      true,
 		},
+		{
+			name: "test success 2",
+			pod: v1.Pod{
+				Spec: v1.PodSpec{
+					Containers: []v1.Container{
+						{
+							Ports: []v1.ContainerPort{
+								{
+									Name:          "https",
+									ContainerPort: int32(443)},
+								{
+									Name:          "http",
+									ContainerPort: int32(80)},
+							},
+						},
+					},
+					InitContainers: []v1.Container{
+						{
+							Ports: []v1.ContainerPort{
+								{
+									Name:          "sql",
+									ContainerPort: int32(3306)},
+							},
+						},
+					},
+				},
+			},
+			portname: "sql",
+			portnum:  int32(3306),
+			err:      false,
+		}, {
+			name: "test failure 2",
+			pod: v1.Pod{
+				Spec: v1.PodSpec{
+					Containers: []v1.Container{
+						{
+							Ports: []v1.ContainerPort{
+								{
+									Name:          "https",
+									ContainerPort: int32(443)},
+								{
+									Name:          "http",
+									ContainerPort: int32(80)},
+							},
+						},
+					},
+					InitContainers: []v1.Container{
+						{
+							Ports: []v1.ContainerPort{
+								{
+									Name:          "sql",
+									ContainerPort: int32(3306)},
+							},
+						},
+					},
+				},
+			},
+			portname: "metrics",
+			portnum:  int32(0),
+			err:      true,
+		},
 	}
 
 	for _, tt := range tests {