print typed podlist for correct serialization

Pass a typed list of pods to the printer in order to have correctly
serialized output.

Author: juanvallejo

pkg/cmd/admin/node/listpods.go

@@ -11,6 +11,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	kerrors "k8s.io/apimachinery/pkg/util/errors"
 	kapi "k8s.io/kubernetes/pkg/api"
+	kapiv1 "k8s.io/kubernetes/pkg/api/v1"
 	kcmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
 	kprinters "k8s.io/kubernetes/pkg/printers"
 )
@@ -90,7 +91,12 @@ func (l *ListPodsOptions) runListPods(node *kapi.Node, printer kprinters.Resourc
 // objects for every node, into a single list. This allows output containing multiple nodes to be
 // printed to a single writer, and be easily parsed as a single data format.
 func (l *ListPodsOptions) handleRESTOutput(nodes []*kapi.Node, printer kprinters.ResourcePrinter) []error {
-	unifiedPodList := &kapi.PodList{}
+	unifiedPodList := &kapiv1.PodList{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       "List",
+			APIVersion: "v1",
+		},
+	}
 
 	errList := []error{}
 	for _, node := range nodes {
@@ -101,7 +107,7 @@ func (l *ListPodsOptions) handleRESTOutput(nodes []*kapi.Node, printer kprinters
 		}
 		fieldSelector := fields.Set{GetPodHostFieldLabel(node.TypeMeta.APIVersion): node.ObjectMeta.Name}.AsSelector()
 
-		pods, err := l.Options.KubeClient.Core().Pods(metav1.NamespaceAll).List(metav1.ListOptions{LabelSelector: labelSelector.String(), FieldSelector: fieldSelector.String()})
+		pods, err := l.Options.ExternalKubeClient.CoreV1().Pods(metav1.NamespaceAll).List(metav1.ListOptions{LabelSelector: labelSelector.String(), FieldSelector: fieldSelector.String()})
 		if err != nil {
 			errList = append(errList, err)
 			continue

pkg/cmd/admin/node/node_options.go

@@ -16,6 +16,7 @@ import (
 	kerrors "k8s.io/apimachinery/pkg/util/errors"
 	"k8s.io/apimachinery/pkg/util/sets"
 	kapi "k8s.io/kubernetes/pkg/api"
+	externalclientset "k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
 	kclientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
 	"k8s.io/kubernetes/pkg/kubectl/resource"
 	kprinters "k8s.io/kubernetes/pkg/printers"
@@ -24,10 +25,11 @@ import (
 )
 
 type NodeOptions struct {
-	DefaultNamespace string
-	KubeClient       kclientset.Interface
-	Writer           io.Writer
-	ErrWriter        io.Writer
+	DefaultNamespace   string
+	ExternalKubeClient externalclientset.Interface
+	KubeClient         kclientset.Interface
+	Writer             io.Writer
+	ErrWriter          io.Writer
 
 	Mapper            meta.RESTMapper
 	Typer             runtime.ObjectTyper
@@ -50,17 +52,29 @@ func (n *NodeOptions) Complete(f *clientcmd.Factory, c *cobra.Command, args []st
 	if err != nil {
 		return err
 	}
+
 	_, kc, err := f.Clients()
 	if err != nil {
 		return err
 	}
+
+	config, err := f.ClientConfig()
+	if err != nil {
+		return err
+	}
+	externalkc, err := externalclientset.NewForConfig(config)
+	if err != nil {
+		return err
+	}
+
 	cmdPrinter, err := f.PrinterForCommand(c, false, nil, kprinters.PrintOptions{})
 	if err != nil {
 		return err
 	}
 	mapper, typer := f.Object()
 
 	n.DefaultNamespace = defaultNamespace
+	n.ExternalKubeClient = externalkc
 	n.KubeClient = kc
 	n.Writer = out
 	n.ErrWriter = errout

test/cmd/admin.sh

@@ -78,6 +78,8 @@ os::cmd::expect_success_and_not_text 'oadm manage-node --selector= --schedulable
 os::cmd::expect_success_and_not_text 'oc get node -o yaml' 'unschedulable: true'
 os::cmd::expect_success_and_text 'oadm manage-node --selector= --schedulable=false' 'SchedulingDisabled'
 os::cmd::expect_success_and_text 'oc get node -o yaml' 'unschedulable: true'
+# ensure correct serialization of podList output
+os::cmd::expect_success_and_text "oadm manage-node --list-pods --selector= -o jsonpath='{ .kind }'" 'List'
 echo "manage-node: ok"
 os::test::junit::declare_suite_end