Add resource printer and describer for PodDisruptionBudget

pkg/kubectl/describe.go

@@ -40,6 +40,7 @@ import (
 	"k8s.io/kubernetes/pkg/apis/batch"
 	"k8s.io/kubernetes/pkg/apis/certificates"
 	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/apis/policy"
 	"k8s.io/kubernetes/pkg/apis/storage"
 	storageutil "k8s.io/kubernetes/pkg/apis/storage/util"
 	clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
@@ -120,6 +121,7 @@ func describerMap(c clientset.Interface) map[unversioned.GroupKind]Describer {
 		apps.Kind("StatefulSet"):                       &StatefulSetDescriber{c},
 		certificates.Kind("CertificateSigningRequest"): &CertificateSigningRequestDescriber{c},
 		storage.Kind("StorageClass"):                   &StorageClassDescriber{c},
+		policy.Kind("PodDisruptionBudget"):             &PodDisruptionBudgetDescriber{c},
 	}
 
 	return m
@@ -2395,6 +2397,40 @@ func (s *StorageClassDescriber) Describe(namespace, name string, describerSettin
 	})
 }
 
+type PodDisruptionBudgetDescriber struct {
+	clientset.Interface
+}
+
+func (p *PodDisruptionBudgetDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
+	pdb, err := p.Policy().PodDisruptionBudgets(namespace).Get(name)
+	if err != nil {
+		return "", err
+	}
+	return tabbedString(func(out io.Writer) error {
+		fmt.Fprintf(out, "Name:\t%s\n", pdb.Name)
+		fmt.Fprintf(out, "Min available:\t%s\n", pdb.Spec.MinAvailable.String())
+		if pdb.Spec.Selector != nil {
+			fmt.Fprintf(out, "Selector:\t%s\n", unversioned.FormatLabelSelector(pdb.Spec.Selector))
+		} else {
+			fmt.Fprintf(out, "Selector:\t<unset>\n")
+		}
+		fmt.Fprintf(out, "Status:\n")
+		fmt.Fprintf(out, "    Current:\t%d\n", pdb.Status.CurrentHealthy)
+		fmt.Fprintf(out, "    Desired:\t%d\n", pdb.Status.DesiredHealthy)
+		fmt.Fprintf(out, "    Total:\t%d\n", pdb.Status.ExpectedPods)
+		if describerSettings.ShowEvents {
+			events, err := p.Core().Events(namespace).Search(pdb)
+			if err != nil {
+				return err
+			}
+			if events != nil {
+				DescribeEvents(events, out)
+			}
+		}
+		return nil
+	})
+}
+
 // newErrNoDescriber creates a new ErrNoDescriber with the names of the provided types.
 func newErrNoDescriber(types ...reflect.Type) error {
 	names := make([]string, 0, len(types))