kubectl: add port names to describe pod output

Kubernetes-commit: 1d0fd5928818036289a76358503778eff26e53ef

pkg/describe/describe.go

@@ -1865,7 +1865,11 @@ func describeContainerBasicInfo(container corev1.Container, status corev1.Contai
 func describeContainerPorts(cPorts []corev1.ContainerPort) string {
 	ports := make([]string, 0, len(cPorts))
 	for _, cPort := range cPorts {
-		ports = append(ports, fmt.Sprintf("%d/%s", cPort.ContainerPort, cPort.Protocol))
+		portStr := fmt.Sprintf("%d/%s", cPort.ContainerPort, cPort.Protocol)
+		if cPort.Name != "" {
+			portStr = fmt.Sprintf("%s (%s)", portStr, cPort.Name)
+		}
+		ports = append(ports, portStr)
 	}
 	return strings.Join(ports, ", ")
 }
@@ -1873,7 +1877,11 @@ func describeContainerPorts(cPorts []corev1.ContainerPort) string {
 func describeContainerHostPorts(cPorts []corev1.ContainerPort) string {
 	ports := make([]string, 0, len(cPorts))
 	for _, cPort := range cPorts {
-		ports = append(ports, fmt.Sprintf("%d/%s", cPort.HostPort, cPort.Protocol))
+		portStr := fmt.Sprintf("%d/%s", cPort.HostPort, cPort.Protocol)
+		if cPort.Name != "" {
+			portStr = fmt.Sprintf("%s (%s)", portStr, cPort.Name)
+		}
+		ports = append(ports, portStr)
 	}
 	return strings.Join(ports, ", ")
 }

pkg/describe/describe_test.go

@@ -1372,6 +1372,74 @@ func TestDescribeResources(t *testing.T) {
 	}
 }
 
+func TestDescribeContainerPorts(t *testing.T) {
+	testCases := []struct {
+		name              string
+		ports             []corev1.ContainerPort
+		expectedContainer string
+		expectedHost      string
+	}{
+		{
+			name:              "no ports",
+			ports:             []corev1.ContainerPort{},
+			expectedContainer: "",
+			expectedHost:      "",
+		},
+		{
+			name: "container and host port, with name",
+			ports: []corev1.ContainerPort{
+				{Name: "web", ContainerPort: 8080, HostPort: 8080, Protocol: corev1.ProtocolTCP},
+			},
+			expectedContainer: "8080/TCP (web)",
+			expectedHost:      "8080/TCP (web)",
+		},
+		{
+			name: "container and host port, no name",
+			ports: []corev1.ContainerPort{
+				{ContainerPort: 8080, HostPort: 8080, Protocol: corev1.ProtocolTCP},
+			},
+			expectedContainer: "8080/TCP",
+			expectedHost:      "8080/TCP",
+		},
+		{
+			name: "multiple ports with mixed configuration",
+			ports: []corev1.ContainerPort{
+				{Name: "controller", ContainerPort: 9093, HostPort: 9093, Protocol: corev1.ProtocolTCP},
+				{ContainerPort: 9092, Protocol: corev1.ProtocolTCP},
+				{Name: "interbroker", ContainerPort: 9094, HostPort: 9094, Protocol: corev1.ProtocolTCP},
+			},
+			expectedContainer: "9093/TCP (controller), 9092/TCP, 9094/TCP (interbroker)",
+			expectedHost:      "9093/TCP (controller), 0/TCP, 9094/TCP (interbroker)",
+		},
+		{
+			name: "all ports with mixed configuration",
+			ports: []corev1.ContainerPort{
+				{Name: "controller", ContainerPort: 9093, HostPort: 9093, Protocol: corev1.ProtocolTCP},
+				{Name: "client", ContainerPort: 9092, HostPort: 9092, Protocol: corev1.ProtocolTCP},
+				{Name: "interbroker", ContainerPort: 9094, HostPort: 9094, Protocol: corev1.ProtocolTCP},
+			},
+			expectedContainer: "9093/TCP (controller), 9092/TCP (client), 9094/TCP (interbroker)",
+			expectedHost:      "9093/TCP (controller), 9092/TCP (client), 9094/TCP (interbroker)",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name+" - container ports", func(t *testing.T) {
+			result := describeContainerPorts(tc.ports)
+			if result != tc.expectedContainer {
+				t.Errorf("describeContainerPorts: expected %q, got %q", tc.expectedContainer, result)
+			}
+		})
+
+		t.Run(tc.name+" - host ports", func(t *testing.T) {
+			result := describeContainerHostPorts(tc.ports)
+			if result != tc.expectedHost {
+				t.Errorf("describeContainerHostPorts: expected %q, got %q", tc.expectedHost, result)
+			}
+		})
+	}
+}
+
 func TestDescribeContainers(t *testing.T) {
 	trueVal := true
 	testCases := []struct {