/*
Copyright 2017 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package internalversion

import (
	"bytes"
	"fmt"
	"net"
	"sort"
	"strconv"
	"strings"
	"time"

	"k8s.io/apimachinery/pkg/api/meta"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/util/duration"
	"k8s.io/apimachinery/pkg/util/sets"
	"k8s.io/kubernetes/pkg/apis/apps"
	"k8s.io/kubernetes/pkg/apis/autoscaling"
	"k8s.io/kubernetes/pkg/apis/batch"
	"k8s.io/kubernetes/pkg/apis/certificates"
	api "k8s.io/kubernetes/pkg/apis/core"
	"k8s.io/kubernetes/pkg/apis/core/helper"
	"k8s.io/kubernetes/pkg/apis/extensions"
	"k8s.io/kubernetes/pkg/apis/networking"
	"k8s.io/kubernetes/pkg/apis/policy"
	"k8s.io/kubernetes/pkg/apis/rbac"
	"k8s.io/kubernetes/pkg/apis/scheduling"
	"k8s.io/kubernetes/pkg/apis/storage"
	storageutil "k8s.io/kubernetes/pkg/apis/storage/util"
	"k8s.io/kubernetes/pkg/printers"
	"k8s.io/kubernetes/pkg/util/node"
)

const (
	loadBalancerWidth = 16

	// labelNodeRolePrefix is a label prefix for node roles
	// It's copied over to here until it's merged in core: https://github.com/kubernetes/kubernetes/pull/39112
	labelNodeRolePrefix = "node-role.kubernetes.io/"

	// nodeLabelRole specifies the role of a node
	nodeLabelRole = "kubernetes.io/role"
)

// AddHandlers adds print handlers for default Kubernetes types dealing with internal versions.
// TODO: handle errors from Handler
func AddHandlers(h printers.PrintHandler) {
	podColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Ready", Type: "string", Description: "The aggregate readiness state of this pod for accepting traffic."},
		{Name: "Status", Type: "string", Description: "The aggregate status of the containers in this pod."},
		{Name: "Restarts", Type: "integer", Description: "The number of times the containers in this pod have been restarted."},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "IP", Type: "string", Priority: 1, Description: ""},
		{Name: "Node", Type: "string", Priority: 1, Description: ""},
		{Name: "Nominated Node", Type: "string", Priority: 1, Description: ""},
		{Name: "Readiness Gates", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(podColumnDefinitions, printPodList)
	h.TableHandler(podColumnDefinitions, printPod)

	podTemplateColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Containers", Type: "string", Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Description: "Images referenced by each container in the template."},
		{Name: "Pod Labels", Type: "string", Description: "The labels for the pod template."},
	}
	h.TableHandler(podTemplateColumnDefinitions, printPodTemplate)
	h.TableHandler(podTemplateColumnDefinitions, printPodTemplateList)

	podDisruptionBudgetColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Min Available", Type: "string", Description: "The minimum number of pods that must be available."},
		{Name: "Max Unavailable", Type: "string", Description: "The maximum number of pods that may be unavailable."},
		{Name: "Allowed Disruptions", Type: "integer", Description: "Calculated number of pods that may be disrupted at this time."},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(podDisruptionBudgetColumnDefinitions, printPodDisruptionBudget)
	h.TableHandler(podDisruptionBudgetColumnDefinitions, printPodDisruptionBudgetList)

	replicationControllerColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Desired", Type: "integer", Description: ""},
		{Name: "Current", Type: "integer", Description: ""},
		{Name: "Ready", Type: "integer", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(replicationControllerColumnDefinitions, printReplicationController)
	h.TableHandler(replicationControllerColumnDefinitions, printReplicationControllerList)

	replicaSetColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Desired", Type: "integer", Description: ""},
		{Name: "Current", Type: "integer", Description: ""},
		{Name: "Ready", Type: "integer", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(replicaSetColumnDefinitions, printReplicaSet)
	h.TableHandler(replicaSetColumnDefinitions, printReplicaSetList)

	daemonSetColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Desired", Type: "integer", Description: ""},
		{Name: "Current", Type: "integer", Description: ""},
		{Name: "Ready", Type: "integer", Description: ""},
		{Name: "Up-to-date", Type: "integer", Description: ""},
		{Name: "Available", Type: "integer", Description: ""},
		{Name: "Node Selector", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(daemonSetColumnDefinitions, printDaemonSet)
	h.TableHandler(daemonSetColumnDefinitions, printDaemonSetList)

	jobColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Completions", Type: "string", Description: ""},
		{Name: "Duration", Type: "string", Description: "Time required to complete the job."},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(jobColumnDefinitions, printJob)
	h.TableHandler(jobColumnDefinitions, printJobList)

	cronJobColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Schedule", Type: "string", Description: ""},
		{Name: "Suspend", Type: "boolean", Description: ""},
		{Name: "Active", Type: "integer", Description: ""},
		{Name: "Last Schedule", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(cronJobColumnDefinitions, printCronJob)
	h.TableHandler(cronJobColumnDefinitions, printCronJobList)

	serviceColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Type", Type: "string", Description: ""},
		{Name: "Cluster-IP", Type: "string", Description: ""},
		{Name: "External-IP", Type: "string", Description: ""},
		{Name: "Port(s)", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}

	h.TableHandler(serviceColumnDefinitions, printService)
	h.TableHandler(serviceColumnDefinitions, printServiceList)

	ingressColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Hosts", Type: "string", Description: "Hosts that incoming requests are matched against before the ingress rule"},
		{Name: "Address", Type: "string", Description: "Address is a list containing ingress points for the load-balancer"},
		{Name: "Ports", Type: "string", Description: "Ports of TLS configurations that open"},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(ingressColumnDefinitions, printIngress)
	h.TableHandler(ingressColumnDefinitions, printIngressList)

	statefulSetColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Ready", Type: "string", Description: "Number of the pod with ready state"},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
	}
	h.TableHandler(statefulSetColumnDefinitions, printStatefulSet)
	h.TableHandler(statefulSetColumnDefinitions, printStatefulSetList)

	endpointColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Endpoints", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(endpointColumnDefinitions, printEndpoints)
	h.TableHandler(endpointColumnDefinitions, printEndpointsList)

	nodeColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Status", Type: "string", Description: "The status of the node"},
		{Name: "Roles", Type: "string", Description: "The roles of the node"},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Version", Type: "string", Description: ""},
		{Name: "Internal-IP", Type: "string", Priority: 1, Description: ""},
		{Name: "External-IP", Type: "string", Priority: 1, Description: ""},
		{Name: "OS-Image", Type: "string", Priority: 1, Description: ""},
		{Name: "Kernel-Version", Type: "string", Priority: 1, Description: ""},
		{Name: "Container-Runtime", Type: "string", Priority: 1, Description: ""},
	}

	h.TableHandler(nodeColumnDefinitions, printNode)
	h.TableHandler(nodeColumnDefinitions, printNodeList)

	eventColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Last Seen", Type: "string", Description: ""},
		{Name: "Type", Type: "string", Description: ""},
		{Name: "Reason", Type: "string", Description: ""},
		{Name: "Kind", Type: "string", Description: ""},
		{Name: "Source", Type: "string", Priority: 1, Description: ""},
		{Name: "Message", Type: "string", Description: ""},
		{Name: "Subobject", Type: "string", Priority: 1, Description: ""},
		{Name: "First Seen", Type: "string", Priority: 1, Description: ""},
		{Name: "Count", Type: "string", Priority: 1, Description: ""},
		{Name: "Name", Type: "string", Priority: 1, Format: "name", Description: ""},
	}
	h.TableHandler(eventColumnDefinitions, printEvent)
	h.TableHandler(eventColumnDefinitions, printEventList)

	namespaceColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Status", Type: "string", Description: "The status of the namespace"},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(namespaceColumnDefinitions, printNamespace)
	h.TableHandler(namespaceColumnDefinitions, printNamespaceList)

	secretColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Type", Type: "string", Description: ""},
		{Name: "Data", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(secretColumnDefinitions, printSecret)
	h.TableHandler(secretColumnDefinitions, printSecretList)

	serviceAccountColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Secrets", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(serviceAccountColumnDefinitions, printServiceAccount)
	h.TableHandler(serviceAccountColumnDefinitions, printServiceAccountList)

	persistentVolumeColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Capacity", Type: "string", Description: ""},
		{Name: "Access Modes", Type: "string", Description: ""},
		{Name: "Reclaim Policy", Type: "string", Description: ""},
		{Name: "Status", Type: "string", Description: ""},
		{Name: "Claim", Type: "string", Description: ""},
		{Name: "StorageClass", Type: "string", Description: "StorageClass of the pv"},
		{Name: "Reason", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(persistentVolumeColumnDefinitions, printPersistentVolume)
	h.TableHandler(persistentVolumeColumnDefinitions, printPersistentVolumeList)

	persistentVolumeClaimColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Status", Type: "string", Description: ""},
		{Name: "Volume", Type: "string", Description: ""},
		{Name: "Capacity", Type: "string", Description: ""},
		{Name: "Access Modes", Type: "string", Description: ""},
		{Name: "StorageClass", Type: "string", Description: "StorageClass of the pvc"},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(persistentVolumeClaimColumnDefinitions, printPersistentVolumeClaim)
	h.TableHandler(persistentVolumeClaimColumnDefinitions, printPersistentVolumeClaimList)

	componentStatusColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Status", Type: "string", Description: "Status of the component conditions"},
		{Name: "Message", Type: "string", Description: "Message of the component conditions"},
		{Name: "Error", Type: "string", Description: "Error of the component conditions"},
	}
	h.TableHandler(componentStatusColumnDefinitions, printComponentStatus)
	h.TableHandler(componentStatusColumnDefinitions, printComponentStatusList)

	deploymentColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Ready", Type: "string", Description: "Number of the pod with ready state"},
		{Name: "Up-to-date", Type: "string", Description: ""},
		{Name: "Available", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Containers", Type: "string", Priority: 1, Description: "Names of each container in the template."},
		{Name: "Images", Type: "string", Priority: 1, Description: "Images referenced by each container in the template."},
		{Name: "Selector", Type: "string", Priority: 1, Description: ""},
	}
	h.TableHandler(deploymentColumnDefinitions, printDeployment)
	h.TableHandler(deploymentColumnDefinitions, printDeploymentList)

	horizontalPodAutoscalerColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Reference", Type: "string", Description: ""},
		{Name: "Targets", Type: "string", Description: ""},
		{Name: "MinPods", Type: "string", Description: ""},
		{Name: "MaxPods", Type: "string", Description: ""},
		{Name: "Replicas", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(horizontalPodAutoscalerColumnDefinitions, printHorizontalPodAutoscaler)
	h.TableHandler(horizontalPodAutoscalerColumnDefinitions, printHorizontalPodAutoscalerList)

	configMapColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Data", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(configMapColumnDefinitions, printConfigMap)
	h.TableHandler(configMapColumnDefinitions, printConfigMapList)

	podSecurityPolicyColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Priv", Type: "string", Description: ""},
		{Name: "Caps", Type: "string", Description: ""},
		{Name: "SELinux", Type: "string", Description: ""},
		{Name: "RunAsUser", Type: "string", Description: ""},
		{Name: "FsGroup", Type: "string", Description: ""},
		{Name: "SupGroup", Type: "string", Description: ""},
		{Name: "ReadOnlyRootFs", Type: "string", Description: ""},
		{Name: "Volumes", Type: "string", Description: ""},
	}
	h.TableHandler(podSecurityPolicyColumnDefinitions, printPodSecurityPolicy)
	h.TableHandler(podSecurityPolicyColumnDefinitions, printPodSecurityPolicyList)

	networkPolicyColumnDefinitioins := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Pod-Selector", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(networkPolicyColumnDefinitioins, printNetworkPolicy)
	h.TableHandler(networkPolicyColumnDefinitioins, printNetworkPolicyList)

	roleBindingsColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Role", Type: "string", Priority: 1, Description: ""},
		{Name: "Users", Type: "string", Priority: 1, Description: "Users in the roleBinding"},
		{Name: "Groups", Type: "string", Priority: 1, Description: "Gruops in the roleBinding"},
		{Name: "ServiceAccounts", Type: "string", Priority: 1, Description: "ServiceAccounts in the roleBinding"},
	}
	h.TableHandler(roleBindingsColumnDefinitions, printRoleBinding)
	h.TableHandler(roleBindingsColumnDefinitions, printRoleBindingList)

	clusterRoleBindingsColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Role", Type: "string", Priority: 1, Description: ""},
		{Name: "Users", Type: "string", Priority: 1, Description: "Users in the roleBinding"},
		{Name: "Groups", Type: "string", Priority: 1, Description: "Gruops in the roleBinding"},
		{Name: "ServiceAccounts", Type: "string", Priority: 1, Description: "ServiceAccounts in the roleBinding"},
	}
	h.TableHandler(clusterRoleBindingsColumnDefinitions, printClusterRoleBinding)
	h.TableHandler(clusterRoleBindingsColumnDefinitions, printClusterRoleBindingList)

	certificateSigningRequestColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Requestor", Type: "string", Description: ""},
		{Name: "Condition", Type: "string", Description:""},
	}
	h.TableHandler(certificateSigningRequestColumnDefinitions, printCertificateSigningRequest)
	h.TableHandler(certificateSigningRequestColumnDefinitions, printCertificateSigningRequestList)

	storageClassColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Provisioner", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}

	h.TableHandler(storageClassColumnDefinitions, printStorageClass)
	h.TableHandler(storageClassColumnDefinitions, printStorageClassList)

	statusColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Status", Type: "string", Description: ""},
		{Name: "Reason", Type: "string", Description: ""},
		{Name: "Message", Type: "string", Description: ""},
	}

	h.TableHandler(statusColumnDefinitions, printStatus)

	controllerRevisionColumnDefinition := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Controller", Type: "string", Description: "Controller of the object"},
		{Name: "Revision", Type: "string", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(controllerRevisionColumnDefinition, printControllerRevision)
	h.TableHandler(controllerRevisionColumnDefinition, printControllerRevisionList)

	resorceQuotaColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
		{Name: "Request", Type: "string", Description: "Request represents a minimum amount of cpu/memory that a container may consume."},
		{Name: "Limit", Type: "string", Description: "Limits control the maximum amount of cpu/memory that a container may use independent of contention on the node."},
	}
	h.TableHandler(resorceQuotaColumnDefinitions, printResourceQuota)
	h.TableHandler(resorceQuotaColumnDefinitions, printResourceQuotaList)

	priorityClassColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Value", Type: "integer", Description: ""},
		{Name: "Global-Default", Type: "boolean", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.TableHandler(priorityClassColumnDefinitions, printPriorityClass)
	h.TableHandler(priorityClassColumnDefinitions, printPriorityClassList)

	AddDefaultHandlers(h)
}

// AddDefaultHandlers adds handlers that can work with most Kubernetes objects.
func AddDefaultHandlers(h printers.PrintHandler) {
	// types without defined columns
	objectMetaColumnDefinitions := []metav1beta1.TableColumnDefinition{
		{Name: "Name", Type: "string", Format: "name", Description: ""},
		{Name: "Age", Type: "string", Description: ""},
	}
	h.DefaultTableHandler(objectMetaColumnDefinitions, printObjectMeta)
}

func printObjectMeta(obj runtime.Object, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	if meta.IsListType(obj) {
		rows := make([]metav1beta1.TableRow, 0, 16)
		err := meta.EachListItem(obj, func(obj runtime.Object) error {
			nestedRows, err := printObjectMeta(obj, options)
			if err != nil {
				return err
			}
			rows = append(rows, nestedRows...)
			return nil
		})
		if err != nil {
			return nil, err
		}
		return rows, nil
	}

	rows := make([]metav1beta1.TableRow, 0, 1)
	m, err := meta.Accessor(obj)
	if err != nil {
		return nil, err
	}
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, m.GetName(), translateTimestampSince(m.GetCreationTimestamp()))
	rows = append(rows, row)
	return rows, nil
}

// Pass ports=nil for all ports.
func formatEndpoints(endpoints *api.Endpoints, ports sets.String) string {
	if len(endpoints.Subsets) == 0 {
		return "<none>"
	}
	list := []string{}
	max := 3
	more := false
	count := 0
	for i := range endpoints.Subsets {
		ss := &endpoints.Subsets[i]
		if len(ss.Ports) == 0 {
			// It's possible to have headless services with no ports.
			for i := range ss.Addresses {
				if len(list) == max {
					more = true
				}
				if !more {
					list = append(list, ss.Addresses[i].IP)
				}
				count++
			}
		} else {
			// "Normal" services with ports defined.
			for i := range ss.Ports {
				port := &ss.Ports[i]
				if ports == nil || ports.Has(port.Name) {
					for i := range ss.Addresses {
						if len(list) == max {
							more = true
						}
						addr := &ss.Addresses[i]
						if !more {
							hostPort := net.JoinHostPort(addr.IP, strconv.Itoa(int(port.Port)))
							list = append(list, hostPort)
						}
						count++
					}
				}
			}
		}
	}
	ret := strings.Join(list, ",")
	if more {
		return fmt.Sprintf("%s + %d more...", ret, count-max)
	}
	return ret
}

// translateTimestampSince returns the elapsed time since timestamp in
// human-readable approximation.
func translateTimestampSince(timestamp metav1.Time) string {
	if timestamp.IsZero() {
		return "<unknown>"
	}

	return duration.HumanDuration(time.Since(timestamp.Time))
}

// translateTimestampUntil returns the elapsed time until timestamp in
// human-readable approximation.
func translateTimestampUntil(timestamp metav1.Time) string {
	if timestamp.IsZero() {
		return "<unknown>"
	}

	return duration.HumanDuration(time.Until(timestamp.Time))
}

var (
	podSuccessConditions = []metav1beta1.TableRowCondition{{Type: metav1beta1.RowCompleted, Status: metav1beta1.ConditionTrue, Reason: string(api.PodSucceeded), Message: "The pod has completed successfully."}}
	podFailedConditions  = []metav1beta1.TableRowCondition{{Type: metav1beta1.RowCompleted, Status: metav1beta1.ConditionTrue, Reason: string(api.PodFailed), Message: "The pod failed."}}
)

func printPodList(podList *api.PodList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(podList.Items))
	for i := range podList.Items {
		r, err := printPod(&podList.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printPod(pod *api.Pod, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	restarts := 0
	totalContainers := len(pod.Spec.Containers)
	readyContainers := 0

	reason := string(pod.Status.Phase)
	if pod.Status.Reason != "" {
		reason = pod.Status.Reason
	}

	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: pod},
	}

	switch pod.Status.Phase {
	case api.PodSucceeded:
		row.Conditions = podSuccessConditions
	case api.PodFailed:
		row.Conditions = podFailedConditions
	}

	initializing := false
	for i := range pod.Status.InitContainerStatuses {
		container := pod.Status.InitContainerStatuses[i]
		restarts += int(container.RestartCount)
		switch {
		case container.State.Terminated != nil && container.State.Terminated.ExitCode == 0:
			continue
		case container.State.Terminated != nil:
			// initialization is failed
			if len(container.State.Terminated.Reason) == 0 {
				if container.State.Terminated.Signal != 0 {
					reason = fmt.Sprintf("Init:Signal:%d", container.State.Terminated.Signal)
				} else {
					reason = fmt.Sprintf("Init:ExitCode:%d", container.State.Terminated.ExitCode)
				}
			} else {
				reason = "Init:" + container.State.Terminated.Reason
			}
			initializing = true
		case container.State.Waiting != nil && len(container.State.Waiting.Reason) > 0 && container.State.Waiting.Reason != "PodInitializing":
			reason = "Init:" + container.State.Waiting.Reason
			initializing = true
		default:
			reason = fmt.Sprintf("Init:%d/%d", i, len(pod.Spec.InitContainers))
			initializing = true
		}
		break
	}
	if !initializing {
		restarts = 0
		hasRunning := false
		for i := len(pod.Status.ContainerStatuses) - 1; i >= 0; i-- {
			container := pod.Status.ContainerStatuses[i]

			restarts += int(container.RestartCount)
			if container.State.Waiting != nil && container.State.Waiting.Reason != "" {
				reason = container.State.Waiting.Reason
			} else if container.State.Terminated != nil && container.State.Terminated.Reason != "" {
				reason = container.State.Terminated.Reason
			} else if container.State.Terminated != nil && container.State.Terminated.Reason == "" {
				if container.State.Terminated.Signal != 0 {
					reason = fmt.Sprintf("Signal:%d", container.State.Terminated.Signal)
				} else {
					reason = fmt.Sprintf("ExitCode:%d", container.State.Terminated.ExitCode)
				}
			} else if container.Ready && container.State.Running != nil {
				hasRunning = true
				readyContainers++
			}
		}

		// change pod status back to "Running" if there is at least one container still reporting as "Running" status
		if reason == "Completed" && hasRunning {
			reason = "Running"
		}
	}

	if pod.DeletionTimestamp != nil && pod.Status.Reason == node.NodeUnreachablePodReason {
		reason = "Unknown"
	} else if pod.DeletionTimestamp != nil {
		reason = "Terminating"
	}

	row.Cells = append(row.Cells, pod.Name, fmt.Sprintf("%d/%d", readyContainers, totalContainers), reason, int64(restarts), translateTimestampSince(pod.CreationTimestamp))
	if options.Wide {
		nodeName := pod.Spec.NodeName
		nominatedNodeName := pod.Status.NominatedNodeName
		podIP := pod.Status.PodIP

		if podIP == "" {
			podIP = "<none>"
		}
		if nodeName == "" {
			nodeName = "<none>"
		}
		if nominatedNodeName == "" {
			nominatedNodeName = "<none>"
		}

		readinessGates := "<none>"
		if len(pod.Spec.ReadinessGates) > 0 {
			trueConditions := 0
			for _, readinessGate := range pod.Spec.ReadinessGates {
				conditionType := readinessGate.ConditionType
				for _, condition := range pod.Status.Conditions {
					if condition.Type == conditionType {
						if condition.Status == api.ConditionTrue {
							trueConditions += 1
						}
						break
					}
				}
			}
			readinessGates = fmt.Sprintf("%d/%d", trueConditions, len(pod.Spec.ReadinessGates))
		}
		row.Cells = append(row.Cells, podIP, nodeName, nominatedNodeName, readinessGates)
	}

	return []metav1beta1.TableRow{row}, nil
}

func printPodTemplate(obj *api.PodTemplate, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	names, images := layoutContainerCells(obj.Template.Spec.Containers)
	row.Cells = append(row.Cells, obj.Name, names, images, labels.FormatLabels(obj.Template.Labels))
	return []metav1beta1.TableRow{row}, nil
}

func printPodTemplateList(list *api.PodTemplateList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printPodTemplate(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printPodDisruptionBudget(obj *policy.PodDisruptionBudget, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	var minAvailable string
	var maxUnavailable string
	if obj.Spec.MinAvailable != nil {
		minAvailable = obj.Spec.MinAvailable.String()
	} else {
		minAvailable = "N/A"
	}

	if obj.Spec.MaxUnavailable != nil {
		maxUnavailable = obj.Spec.MaxUnavailable.String()
	} else {
		maxUnavailable = "N/A"
	}

	row.Cells = append(row.Cells, obj.Name, minAvailable, maxUnavailable, int64(obj.Status.PodDisruptionsAllowed), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printPodDisruptionBudgetList(list *policy.PodDisruptionBudgetList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printPodDisruptionBudget(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

// TODO(AdoHe): try to put wide output in a single method
func printReplicationController(obj *api.ReplicationController, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	desiredReplicas := obj.Spec.Replicas
	currentReplicas := obj.Status.Replicas
	readyReplicas := obj.Status.ReadyReplicas

	row.Cells = append(row.Cells, obj.Name, int64(desiredReplicas), int64(currentReplicas), int64(readyReplicas), translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		names, images := layoutContainerCells(obj.Spec.Template.Spec.Containers)
		row.Cells = append(row.Cells, names, images, labels.FormatLabels(obj.Spec.Selector))
	}
	return []metav1beta1.TableRow{row}, nil
}

func printReplicationControllerList(list *api.ReplicationControllerList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printReplicationController(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printReplicaSet(obj *apps.ReplicaSet, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	desiredReplicas := obj.Spec.Replicas
	currentReplicas := obj.Status.Replicas
	readyReplicas := obj.Status.ReadyReplicas

	row.Cells = append(row.Cells, obj.Name, int64(desiredReplicas), int64(currentReplicas), int64(readyReplicas), translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		names, images := layoutContainerCells(obj.Spec.Template.Spec.Containers)
		row.Cells = append(row.Cells, names, images, metav1.FormatLabelSelector(obj.Spec.Selector))
	}
	return []metav1beta1.TableRow{row}, nil
}

func printReplicaSetList(list *apps.ReplicaSetList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printReplicaSet(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printJob(obj *batch.Job, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	var completions string
	if obj.Spec.Completions != nil {
		completions = fmt.Sprintf("%d/%d", obj.Status.Succeeded, *obj.Spec.Completions)
	} else {
		parallelism := int32(0)
		if obj.Spec.Parallelism != nil {
			parallelism = *obj.Spec.Parallelism
		}
		if parallelism > 1 {
			completions = fmt.Sprintf("%d/1 of %d", obj.Status.Succeeded, parallelism)
		} else {
			completions = fmt.Sprintf("%d/1", obj.Status.Succeeded)
		}
	}
	var jobDuration string
	switch {
	case obj.Status.StartTime == nil:
	case obj.Status.CompletionTime == nil:
		jobDuration = duration.HumanDuration(time.Now().Sub(obj.Status.StartTime.Time))
	default:
		jobDuration = duration.HumanDuration(obj.Status.CompletionTime.Sub(obj.Status.StartTime.Time))
	}

	row.Cells = append(row.Cells, obj.Name, completions, jobDuration, translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		names, images := layoutContainerCells(obj.Spec.Template.Spec.Containers)
		row.Cells = append(row.Cells, names, images, metav1.FormatLabelSelector(obj.Spec.Selector))
	}
	return []metav1beta1.TableRow{row}, nil
}

func printJobList(list *batch.JobList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printJob(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printCronJob(obj *batch.CronJob, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	lastScheduleTime := "<none>"
	if obj.Status.LastScheduleTime != nil {
		lastScheduleTime = translateTimestampSince(*obj.Status.LastScheduleTime)
	}

	row.Cells = append(row.Cells, obj.Name, obj.Spec.Schedule, printBoolPtr(obj.Spec.Suspend), int64(len(obj.Status.Active)), lastScheduleTime, translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		names, images := layoutContainerCells(obj.Spec.JobTemplate.Spec.Template.Spec.Containers)
		row.Cells = append(row.Cells, names, images, metav1.FormatLabelSelector(obj.Spec.JobTemplate.Spec.Selector))
	}
	return []metav1beta1.TableRow{row}, nil
}

func printCronJobList(list *batch.CronJobList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printCronJob(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

// loadBalancerStatusStringer behaves mostly like a string interface and converts the given status to a string.
// `wide` indicates whether the returned value is meant for --o=wide output. If not, it's clipped to 16 bytes.
func loadBalancerStatusStringer(s api.LoadBalancerStatus, wide bool) string {
	ingress := s.Ingress
	result := sets.NewString()
	for i := range ingress {
		if ingress[i].IP != "" {
			result.Insert(ingress[i].IP)
		} else if ingress[i].Hostname != "" {
			result.Insert(ingress[i].Hostname)
		}
	}

	r := strings.Join(result.List(), ",")
	if !wide && len(r) > loadBalancerWidth {
		r = r[0:(loadBalancerWidth-3)] + "..."
	}
	return r
}

func getServiceExternalIP(svc *api.Service, wide bool) string {
	switch svc.Spec.Type {
	case api.ServiceTypeClusterIP:
		if len(svc.Spec.ExternalIPs) > 0 {
			return strings.Join(svc.Spec.ExternalIPs, ",")
		}
		return "<none>"
	case api.ServiceTypeNodePort:
		if len(svc.Spec.ExternalIPs) > 0 {
			return strings.Join(svc.Spec.ExternalIPs, ",")
		}
		return "<none>"
	case api.ServiceTypeLoadBalancer:
		lbIps := loadBalancerStatusStringer(svc.Status.LoadBalancer, wide)
		if len(svc.Spec.ExternalIPs) > 0 {
			results := []string{}
			if len(lbIps) > 0 {
				results = append(results, strings.Split(lbIps, ",")...)
			}
			results = append(results, svc.Spec.ExternalIPs...)
			return strings.Join(results, ",")
		}
		if len(lbIps) > 0 {
			return lbIps
		}
		return "<pending>"
	case api.ServiceTypeExternalName:
		return svc.Spec.ExternalName
	}
	return "<unknown>"
}

func makePortString(ports []api.ServicePort) string {
	pieces := make([]string, len(ports))
	for ix := range ports {
		port := &ports[ix]
		pieces[ix] = fmt.Sprintf("%d/%s", port.Port, port.Protocol)
		if port.NodePort > 0 {
			pieces[ix] = fmt.Sprintf("%d:%d/%s", port.Port, port.NodePort, port.Protocol)
		}
	}
	return strings.Join(pieces, ",")
}

func printService(obj *api.Service, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	svcType := obj.Spec.Type
	internalIP := obj.Spec.ClusterIP
	if len(internalIP) == 0 {
		internalIP = "<none>"
	}
	externalIP := getServiceExternalIP(obj, options.Wide)
	svcPorts := makePortString(obj.Spec.Ports)
	if len(svcPorts) == 0 {
		svcPorts = "<none>"
	}

	row.Cells = append(row.Cells, obj.Name, string(svcType), internalIP, externalIP, svcPorts, translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		row.Cells = append(row.Cells, labels.FormatLabels(obj.Spec.Selector))
	}

	return []metav1beta1.TableRow{row}, nil
}

func printServiceList(list *api.ServiceList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printService(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

// backendStringer behaves just like a string interface and converts the given backend to a string.
func backendStringer(backend *extensions.IngressBackend) string {
	if backend == nil {
		return ""
	}
	return fmt.Sprintf("%v:%v", backend.ServiceName, backend.ServicePort.String())
}

func formatHosts(rules []extensions.IngressRule) string {
	list := []string{}
	max := 3
	more := false
	for _, rule := range rules {
		if len(list) == max {
			more = true
		}
		if !more && len(rule.Host) != 0 {
			list = append(list, rule.Host)
		}
	}
	if len(list) == 0 {
		return "*"
	}
	ret := strings.Join(list, ",")
	if more {
		return fmt.Sprintf("%s + %d more...", ret, len(rules)-max)
	}
	return ret
}

func formatPorts(tls []extensions.IngressTLS) string {
	if len(tls) != 0 {
		return "80, 443"
	}
	return "80"
}

func printIngress(obj *extensions.Ingress, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	hosts := formatHosts(obj.Spec.Rules)
	address := loadBalancerStatusStringer(obj.Status.LoadBalancer, options.Wide)
	ports := formatPorts(obj.Spec.TLS)
	createTime := translateTimestampSince(obj.CreationTimestamp)
	row.Cells = append(row.Cells, obj.Name, hosts, address, ports, createTime)
	return []metav1beta1.TableRow{row}, nil
}

func printIngressList(list *extensions.IngressList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printIngress(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printStatefulSet(obj *apps.StatefulSet, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	desiredReplicas := obj.Spec.Replicas
	readyReplicas := obj.Status.ReadyReplicas
	createTime := translateTimestampSince(obj.CreationTimestamp)
	row.Cells = append(row.Cells, obj.Name, fmt.Sprintf("%d/%d", int64(readyReplicas), int64(desiredReplicas)), createTime)
	if options.Wide {
		names, images := layoutContainerCells(obj.Spec.Template.Spec.Containers)
		row.Cells = append(row.Cells, names, images)
	}
	return []metav1beta1.TableRow{row}, nil
}

func printStatefulSetList(list *apps.StatefulSetList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printStatefulSet(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printDaemonSet(obj *apps.DaemonSet, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	desiredScheduled := obj.Status.DesiredNumberScheduled
	currentScheduled := obj.Status.CurrentNumberScheduled
	numberReady := obj.Status.NumberReady
	numberUpdated := obj.Status.UpdatedNumberScheduled
	numberAvailable := obj.Status.NumberAvailable

	row.Cells = append(row.Cells, obj.Name, int64(desiredScheduled), int64(currentScheduled), int64(numberReady), int64(numberUpdated), int64(numberAvailable), labels.FormatLabels(obj.Spec.Template.Spec.NodeSelector), translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		names, images := layoutContainerCells(obj.Spec.Template.Spec.Containers)
		row.Cells = append(row.Cells, names, images, metav1.FormatLabelSelector(obj.Spec.Selector))
	}
	return []metav1beta1.TableRow{row}, nil
}

func printDaemonSetList(list *apps.DaemonSetList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printDaemonSet(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printEndpoints(obj *api.Endpoints, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Name, formatEndpoints(obj, nil), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printEndpointsList(list *api.EndpointsList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printEndpoints(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printNamespace(obj *api.Namespace, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Name, string(obj.Status.Phase), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printNamespaceList(list *api.NamespaceList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printNamespace(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printSecret(obj *api.Secret, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Name, string(obj.Type), int64(len(obj.Data)), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printSecretList(list *api.SecretList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printSecret(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printServiceAccount(obj *api.ServiceAccount, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Name, int64(len(obj.Secrets)), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printServiceAccountList(list *api.ServiceAccountList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printServiceAccount(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printNode(obj *api.Node, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	conditionMap := make(map[api.NodeConditionType]*api.NodeCondition)
	NodeAllConditions := []api.NodeConditionType{api.NodeReady}
	for i := range obj.Status.Conditions {
		cond := obj.Status.Conditions[i]
		conditionMap[cond.Type] = &cond
	}
	var status []string
	for _, validCondition := range NodeAllConditions {
		if condition, ok := conditionMap[validCondition]; ok {
			if condition.Status == api.ConditionTrue {
				status = append(status, string(condition.Type))
			} else {
				status = append(status, "Not"+string(condition.Type))
			}
		}
	}
	if len(status) == 0 {
		status = append(status, "Unknown")
	}
	if obj.Spec.Unschedulable {
		status = append(status, "SchedulingDisabled")
	}

	roles := strings.Join(findNodeRoles(obj), ",")
	if len(roles) == 0 {
		roles = "<none>"
	}

	row.Cells = append(row.Cells, obj.Name, strings.Join(status, ","), roles, translateTimestampSince(obj.CreationTimestamp), obj.Status.NodeInfo.KubeletVersion)
	if options.Wide {
		osImage, kernelVersion, crVersion := obj.Status.NodeInfo.OSImage, obj.Status.NodeInfo.KernelVersion, obj.Status.NodeInfo.ContainerRuntimeVersion
		if osImage == "" {
			osImage = "<unknown>"
		}
		if kernelVersion == "" {
			kernelVersion = "<unknown>"
		}
		if crVersion == "" {
			crVersion = "<unknown>"
		}
		row.Cells = append(row.Cells, getNodeInternalIP(obj), getNodeExternalIP(obj), osImage, kernelVersion, crVersion)
	}

	return []metav1beta1.TableRow{row}, nil
}

// Returns first external ip of the node or "<none>" if none is found.
func getNodeExternalIP(node *api.Node) string {
	for _, address := range node.Status.Addresses {
		if address.Type == api.NodeExternalIP {
			return address.Address
		}
	}

	return "<none>"
}

// Returns the internal IP of the node or "<none>" if none is found.
func getNodeInternalIP(node *api.Node) string {
	for _, address := range node.Status.Addresses {
		if address.Type == api.NodeInternalIP {
			return address.Address
		}
	}

	return "<none>"
}

// findNodeRoles returns the roles of a given node.
// The roles are determined by looking for:
// * a node-role.kubernetes.io/<role>="" label
// * a kubernetes.io/role="<role>" label
func findNodeRoles(node *api.Node) []string {
	roles := sets.NewString()
	for k, v := range node.Labels {
		switch {
		case strings.HasPrefix(k, labelNodeRolePrefix):
			if role := strings.TrimPrefix(k, labelNodeRolePrefix); len(role) > 0 {
				roles.Insert(role)
			}

		case k == nodeLabelRole && v != "":
			roles.Insert(v)
		}
	}
	return roles.List()
}

func printNodeList(list *api.NodeList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printNode(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printPersistentVolume(obj *api.PersistentVolume, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	claimRefUID := ""
	if obj.Spec.ClaimRef != nil {
		claimRefUID += obj.Spec.ClaimRef.Namespace
		claimRefUID += "/"
		claimRefUID += obj.Spec.ClaimRef.Name
	}

	modesStr := helper.GetAccessModesAsString(obj.Spec.AccessModes)
	reclaimPolicyStr := string(obj.Spec.PersistentVolumeReclaimPolicy)

	aQty := obj.Spec.Capacity[api.ResourceStorage]
	aSize := aQty.String()

	phase := obj.Status.Phase
	if obj.ObjectMeta.DeletionTimestamp != nil {
		phase = "Terminating"
	}

	row.Cells = append(row.Cells, obj.Name, aSize, modesStr, reclaimPolicyStr,
		string(phase), claimRefUID, helper.GetPersistentVolumeClass(obj),
		obj.Status.Reason,
		translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printPersistentVolumeList(list *api.PersistentVolumeList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printPersistentVolume(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printPersistentVolumeClaim(obj *api.PersistentVolumeClaim, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	phase := obj.Status.Phase
	if obj.ObjectMeta.DeletionTimestamp != nil {
		phase = "Terminating"
	}

	storage := obj.Spec.Resources.Requests[api.ResourceStorage]
	capacity := ""
	accessModes := ""
	if obj.Spec.VolumeName != "" {
		accessModes = helper.GetAccessModesAsString(obj.Status.AccessModes)
		storage = obj.Status.Capacity[api.ResourceStorage]
		capacity = storage.String()
	}

	row.Cells = append(row.Cells, obj.Name, string(phase), obj.Spec.VolumeName, capacity, accessModes, helper.GetPersistentVolumeClaimClass(obj), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printPersistentVolumeClaimList(list *api.PersistentVolumeClaimList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printPersistentVolumeClaim(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printEvent(obj *api.Event, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	// While watching event, we should print absolute time.
	var firstTimestamp, lastTimestamp string
	if options.AbsoluteTimestamps {
		firstTimestamp = obj.FirstTimestamp.String()
		lastTimestamp = obj.LastTimestamp.String()
	} else {
		firstTimestamp = translateTimestampSince(obj.FirstTimestamp)
		lastTimestamp = translateTimestampSince(obj.LastTimestamp)
	}
	if options.Wide {
		row.Cells = append(row.Cells,
			lastTimestamp,
			obj.Type,
			obj.Reason,
			obj.InvolvedObject.Kind,
			formatEventSource(obj.Source),
			strings.TrimSpace(obj.Message),
			obj.InvolvedObject.FieldPath,
			firstTimestamp,
			int64(obj.Count),
			obj.Name,
		)
	} else {
		row.Cells = append(row.Cells,
			lastTimestamp,
			obj.Type,
			obj.Reason,
			obj.InvolvedObject.Kind,
			strings.TrimSpace(obj.Message),
		)
	}

	return []metav1beta1.TableRow{row}, nil
}

// Sorts and prints the EventList in a human-friendly format.
func printEventList(list *api.EventList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printEvent(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printRoleBinding(obj *rbac.RoleBinding, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	row.Cells = append(row.Cells, obj.Name, translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		roleRef := fmt.Sprintf("%s/%s", obj.RoleRef.Kind, obj.RoleRef.Name)
		users, groups, sas, _ := rbac.SubjectsStrings(obj.Subjects)
		row.Cells = append(row.Cells, roleRef, strings.Join(users, ", "), strings.Join(groups, ", "), strings.Join(sas, ", "))
	}
	return []metav1beta1.TableRow{row}, nil
}

// Prints the RoleBinding in a human-friendly format.
func printRoleBindingList(list *rbac.RoleBindingList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printRoleBinding(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printClusterRoleBinding(obj *rbac.ClusterRoleBinding, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	row.Cells = append(row.Cells, obj.Name, translateTimestampSince(obj.CreationTimestamp))
	if options.Wide {
		roleRef := fmt.Sprintf("%s/%s", obj.RoleRef.Kind, obj.RoleRef.Name)
		users, groups, sas, _ := rbac.SubjectsStrings(obj.Subjects)
		row.Cells = append(row.Cells, roleRef, strings.Join(users, ", "), strings.Join(groups, ", "), strings.Join(sas, ", "))
	}
	return []metav1beta1.TableRow{row}, nil
}

// Prints the ClusterRoleBinding in a human-friendly format.
func printClusterRoleBindingList(list *rbac.ClusterRoleBindingList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printClusterRoleBinding(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printCertificateSigningRequest(obj *certificates.CertificateSigningRequest, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	status, err := extractCSRStatus(obj)
	if err != nil {
		return nil, err
	}
	row.Cells = append(row.Cells, obj.Name, translateTimestampSince(obj.CreationTimestamp), obj.Spec.Username, status)
	return []metav1beta1.TableRow{row}, nil
}

func extractCSRStatus(csr *certificates.CertificateSigningRequest) (string, error) {
	var approved, denied bool
	for _, c := range csr.Status.Conditions {
		switch c.Type {
		case certificates.CertificateApproved:
			approved = true
		case certificates.CertificateDenied:
			denied = true
		default:
			return "", fmt.Errorf("unknown csr condition %q", c)
		}
	}
	var status string
	// must be in order of presidence
	if denied {
		status += "Denied"
	} else if approved {
		status += "Approved"
	} else {
		status += "Pending"
	}
	if len(csr.Status.Certificate) > 0 {
		status += ",Issued"
	}
	return status, nil
}

func printCertificateSigningRequestList(list *certificates.CertificateSigningRequestList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printCertificateSigningRequest(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printComponentStatus(obj *api.ComponentStatus, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	status := "Unknown"
	message := ""
	error := ""
	for _, condition := range obj.Conditions {
		if condition.Type == api.ComponentHealthy {
			if condition.Status == api.ConditionTrue {
				status = "Healthy"
			} else {
				status = "Unhealthy"
			}
			message = condition.Message
			error = condition.Error
			break
		}
	}
	row.Cells = append(row.Cells, obj.Name, status, message, error)
	return []metav1beta1.TableRow{row}, nil
}

func printComponentStatusList(list *api.ComponentStatusList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printComponentStatus(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printDeployment(obj *apps.Deployment, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	desiredReplicas := obj.Spec.Replicas
	updatedReplicas := obj.Status.UpdatedReplicas
	readyReplicas := obj.Status.ReadyReplicas
	availableReplicas := obj.Status.AvailableReplicas
	age := translateTimestampSince(obj.CreationTimestamp)
	containers := obj.Spec.Template.Spec.Containers
	selector, err := metav1.LabelSelectorAsSelector(obj.Spec.Selector)
	if err != nil {
		// this shouldn't happen if LabelSelector passed validation
		return nil, err
	}
	row.Cells = append(row.Cells, obj.Name, fmt.Sprintf("%d/%d", int64(readyReplicas), int64(desiredReplicas)), int64(updatedReplicas), int64(availableReplicas), age)
	if options.Wide {
		containers, images := layoutContainerCells(containers)
		row.Cells = append(row.Cells, containers, images, selector.String())
	}
	return []metav1beta1.TableRow{row}, nil
}

func printDeploymentList(list *apps.DeploymentList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printDeployment(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func formatHPAMetrics(specs []autoscaling.MetricSpec, statuses []autoscaling.MetricStatus) string {
	if len(specs) == 0 {
		return "<none>"
	}
	list := []string{}
	max := 2
	more := false
	count := 0
	for i, spec := range specs {
		switch spec.Type {
		case autoscaling.ExternalMetricSourceType:
			if spec.External.Target.AverageValue != nil {
				current := "<unknown>"
				if len(statuses) > i && statuses[i].External != nil && &statuses[i].External.Current.AverageValue != nil {
					current = statuses[i].External.Current.AverageValue.String()
				}
				list = append(list, fmt.Sprintf("%s/%s (avg)", current, spec.External.Target.AverageValue.String()))
			} else {
				current := "<unknown>"
				if len(statuses) > i && statuses[i].External != nil {
					current = statuses[i].External.Current.Value.String()
				}
				list = append(list, fmt.Sprintf("%s/%s", current, spec.External.Target.Value.String()))
			}
		case autoscaling.PodsMetricSourceType:
			current := "<unknown>"
			if len(statuses) > i && statuses[i].Pods != nil {
				current = statuses[i].Pods.Current.AverageValue.String()
			}
			list = append(list, fmt.Sprintf("%s/%s", current, spec.Pods.Target.AverageValue.String()))
		case autoscaling.ObjectMetricSourceType:
			current := "<unknown>"
			if len(statuses) > i && statuses[i].Object != nil {
				current = statuses[i].Object.Current.Value.String()
			}
			list = append(list, fmt.Sprintf("%s/%s", current, spec.Object.Target.Value.String()))
		case autoscaling.ResourceMetricSourceType:
			if spec.Resource.Target.AverageValue != nil {
				current := "<unknown>"
				if len(statuses) > i && statuses[i].Resource != nil {
					current = statuses[i].Resource.Current.AverageValue.String()
				}
				list = append(list, fmt.Sprintf("%s/%s", current, spec.Resource.Target.AverageValue.String()))
			} else {
				current := "<unknown>"
				if len(statuses) > i && statuses[i].Resource != nil && statuses[i].Resource.Current.AverageUtilization != nil {
					current = fmt.Sprintf("%d%%", *statuses[i].Resource.Current.AverageUtilization)
				}

				target := "<auto>"
				if spec.Resource.Target.AverageUtilization != nil {
					target = fmt.Sprintf("%d%%", *spec.Resource.Target.AverageUtilization)
				}
				list = append(list, fmt.Sprintf("%s/%s", current, target))
			}
		default:
			list = append(list, "<unknown type>")
		}

		count++
	}

	if count > max {
		list = list[:max]
		more = true
	}

	ret := strings.Join(list, ", ")
	if more {
		return fmt.Sprintf("%s + %d more...", ret, count-max)
	}
	return ret
}

func printHorizontalPodAutoscaler(obj *autoscaling.HorizontalPodAutoscaler, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	reference := fmt.Sprintf("%s/%s",
		obj.Spec.ScaleTargetRef.Kind,
		obj.Spec.ScaleTargetRef.Name)
	minPods := "<unset>"
	metrics := formatHPAMetrics(obj.Spec.Metrics, obj.Status.CurrentMetrics)
	if obj.Spec.MinReplicas != nil {
		minPods = fmt.Sprintf("%d", *obj.Spec.MinReplicas)
	}
	maxPods := obj.Spec.MaxReplicas
	currentReplicas := obj.Status.CurrentReplicas
	row.Cells = append(row.Cells, obj.Name, reference, metrics, minPods, int64(maxPods), int64(currentReplicas), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printHorizontalPodAutoscalerList(list *autoscaling.HorizontalPodAutoscalerList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printHorizontalPodAutoscaler(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printConfigMap(obj *api.ConfigMap, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Name, int64(len(obj.Data)), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printConfigMapList(list *api.ConfigMapList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printConfigMap(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printPodSecurityPolicy(obj *policy.PodSecurityPolicy, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	capabilities := make([]string, len(obj.Spec.AllowedCapabilities))
	for i, c := range obj.Spec.AllowedCapabilities {
		capabilities[i] = string(c)
	}
	volumes := make([]string, len(obj.Spec.Volumes))
	for i, v := range obj.Spec.Volumes {
		volumes[i] = string(v)
	}
	row.Cells = append(row.Cells, obj.Name, fmt.Sprintf("%v", obj.Spec.Privileged),
		strings.Join(capabilities, ","), string(obj.Spec.SELinux.Rule),
		string(obj.Spec.RunAsUser.Rule), string(obj.Spec.FSGroup.Rule),
		string(obj.Spec.SupplementalGroups.Rule), obj.Spec.ReadOnlyRootFilesystem,
		strings.Join(volumes, ","))
	return []metav1beta1.TableRow{row}, nil
}

func printPodSecurityPolicyList(list *policy.PodSecurityPolicyList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printPodSecurityPolicy(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printNetworkPolicy(obj *networking.NetworkPolicy, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Name, metav1.FormatLabelSelector(&obj.Spec.PodSelector), translateTimestampSince(obj.CreationTimestamp))
	return []metav1beta1.TableRow{row}, nil
}

func printNetworkPolicyList(list *networking.NetworkPolicyList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printNetworkPolicy(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printStorageClass(obj *storage.StorageClass, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	name := obj.Name
	if storageutil.IsDefaultAnnotation(obj.ObjectMeta) {
		name += " (default)"
	}
	provtype := obj.Provisioner
	row.Cells = append(row.Cells, name, provtype, translateTimestampSince(obj.CreationTimestamp))

	return []metav1beta1.TableRow{row}, nil
}

func printStorageClassList(list *storage.StorageClassList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printStorageClass(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printStatus(obj *metav1.Status, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}
	row.Cells = append(row.Cells, obj.Status, obj.Reason, obj.Message)

	return []metav1beta1.TableRow{row}, nil
}

// Lay out all the containers on one line if use wide output.
func layoutContainerCells(containers []api.Container) (names string, images string) {
	var namesBuffer bytes.Buffer
	var imagesBuffer bytes.Buffer

	for i, container := range containers {
		namesBuffer.WriteString(container.Name)
		imagesBuffer.WriteString(container.Image)
		if i != len(containers)-1 {
			namesBuffer.WriteString(",")
			imagesBuffer.WriteString(",")
		}
	}
	return namesBuffer.String(), imagesBuffer.String()
}

// formatEventSource formats EventSource as a comma separated string excluding Host when empty
func formatEventSource(es api.EventSource) string {
	EventSourceString := []string{es.Component}
	if len(es.Host) > 0 {
		EventSourceString = append(EventSourceString, es.Host)
	}
	return strings.Join(EventSourceString, ", ")
}

func printControllerRevision(obj *apps.ControllerRevision, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	controllerRef := metav1.GetControllerOf(obj)
	controllerName := "<none>"
	if controllerRef != nil {
		withKind := true
		gv, err := schema.ParseGroupVersion(controllerRef.APIVersion)
		if err != nil {
			return nil, err
		}
		gvk := gv.WithKind(controllerRef.Kind)
		controllerName = printers.FormatResourceName(gvk.GroupKind(), controllerRef.Name, withKind)
	}
	revision := obj.Revision
	age := translateTimestampSince(obj.CreationTimestamp)
	row.Cells = append(row.Cells, obj.Name, controllerName, revision, age)
	return []metav1beta1.TableRow{row}, nil
}

func printControllerRevisionList(list *apps.ControllerRevisionList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printControllerRevision(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printResourceQuota(resourceQuota *api.ResourceQuota, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: resourceQuota},
	}

	resources := make([]api.ResourceName, 0, len(resourceQuota.Status.Hard))
	for resource := range resourceQuota.Status.Hard {
		resources = append(resources, resource)
	}
	sort.Sort(SortableResourceNames(resources))

	requestColumn := bytes.NewBuffer([]byte{})
	limitColumn := bytes.NewBuffer([]byte{})
	for i := range resources {
		w := requestColumn
		resource := resources[i]
		usedQuantity := resourceQuota.Status.Used[resource]
		hardQuantity := resourceQuota.Status.Hard[resource]

		// use limitColumn writer if a resource name prefixed with "limits" is found
		if pieces := strings.Split(resource.String(), "."); len(pieces) > 1 && pieces[0] == "limits" {
			w = limitColumn
		}

		fmt.Fprintf(w, "%s: %s/%s, ", resource, usedQuantity.String(), hardQuantity.String())
	}

	age := translateTimestampSince(resourceQuota.CreationTimestamp)
	row.Cells = append(row.Cells, resourceQuota.Name, age, strings.TrimSuffix(requestColumn.String(), ", "), strings.TrimSuffix(limitColumn.String(), ", "))
	return []metav1beta1.TableRow{row}, nil
}

func printResourceQuotaList(list *api.ResourceQuotaList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printResourceQuota(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printPriorityClass(obj *scheduling.PriorityClass, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	row := metav1beta1.TableRow{
		Object: runtime.RawExtension{Object: obj},
	}

	name := obj.Name
	value := obj.Value
	globalDefault := obj.GlobalDefault
	row.Cells = append(row.Cells, name, int64(value), globalDefault, translateTimestampSince(obj.CreationTimestamp))

	return []metav1beta1.TableRow{row}, nil
}

func printPriorityClassList(list *scheduling.PriorityClassList, options printers.PrintOptions) ([]metav1beta1.TableRow, error) {
	rows := make([]metav1beta1.TableRow, 0, len(list.Items))
	for i := range list.Items {
		r, err := printPriorityClass(&list.Items[i], options)
		if err != nil {
			return nil, err
		}
		rows = append(rows, r...)
	}
	return rows, nil
}

func printBoolPtr(value *bool) string {
	if value != nil {
		return printBool(*value)
	}

	return "<unset>"
}

func printBool(value bool) string {
	if value {
		return "True"
	}

	return "False"
}

type SortableResourceNames []api.ResourceName

func (list SortableResourceNames) Len() int {
	return len(list)
}

func (list SortableResourceNames) Swap(i, j int) {
	list[i], list[j] = list[j], list[i]
}

func (list SortableResourceNames) Less(i, j int) bool {
	return list[i] < list[j]
}
