CRD should have server side printing

Add the plumbing for server side printing. Not connected until we
support a way to get OpenAPI extensions from CRDs.

cmd/kubeadm/app/cmd/BUILD

@@ -55,7 +55,6 @@ go_library(
         "//pkg/apis/core:go_default_library",
         "//pkg/kubectl/cmd/util:go_default_library",
         "//pkg/kubectl/util/i18n:go_default_library",
-        "//pkg/printers:go_default_library",
         "//pkg/util/initsystem:go_default_library",
         "//pkg/util/node:go_default_library",
         "//pkg/version:go_default_library",
@@ -67,6 +66,7 @@ go_library(
         "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/fields:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/duration:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/version:go_default_library",
         "//vendor/k8s.io/apiserver/pkg/util/flag:go_default_library",

cmd/kubeadm/app/cmd/token.go

@@ -31,6 +31,7 @@ import (
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/apimachinery/pkg/util/duration"
 	"k8s.io/apimachinery/pkg/util/sets"
 	clientset "k8s.io/client-go/kubernetes"
 	bootstrapapi "k8s.io/client-go/tools/bootstrap/token/api"
@@ -44,7 +45,6 @@ import (
 	kubeconfigutil "k8s.io/kubernetes/cmd/kubeadm/app/util/kubeconfig"
 	tokenutil "k8s.io/kubernetes/cmd/kubeadm/app/util/token"
 	api "k8s.io/kubernetes/pkg/apis/core"
-	"k8s.io/kubernetes/pkg/printers"
 )
 
 // NewCmdToken returns cobra.Command for token management
@@ -310,7 +310,7 @@ func RunListTokens(out io.Writer, errW io.Writer, client clientset.Interface) er
 				fmt.Fprintf(errW, "can't parse expiration time of bootstrap token %s\n", secret.Name)
 				continue
 			}
-			ttl = printers.ShortHumanDuration(expireTime.Sub(time.Now()))
+			ttl = duration.ShortHumanDuration(expireTime.Sub(time.Now()))
 			expires = expireTime.Format(time.RFC3339)
 		}
 

pkg/printers/BUILD

@@ -9,7 +9,6 @@ load(
 go_library(
     name = "go_default_library",
     srcs = [
-        "common.go",
         "customcolumn.go",
         "humanreadable.go",
         "interface.go",

pkg/printers/internalversion/BUILD

@@ -102,6 +102,7 @@ go_library(
         "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/duration:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
         "//vendor/k8s.io/client-go/dynamic:go_default_library",

pkg/printers/internalversion/printers.go

@@ -40,6 +40,7 @@ import (
 	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/util/duration"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/kubernetes/pkg/api/events"
 	"k8s.io/kubernetes/pkg/apis/apps"
@@ -500,7 +501,7 @@ func translateTimestamp(timestamp metav1.Time) string {
 	if timestamp.IsZero() {
 		return "<unknown>"
 	}
-	return printers.ShortHumanDuration(time.Now().Sub(timestamp.Time))
+	return duration.ShortHumanDuration(time.Now().Sub(timestamp.Time))
 }
 
 var (

staging/BUILD

@@ -64,6 +64,7 @@ filegroup(
         "//staging/src/k8s.io/apimachinery/pkg/util/cache:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/clock:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/diff:all-srcs",
+        "//staging/src/k8s.io/apimachinery/pkg/util/duration:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/errors:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/framer:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/httpstream:all-srcs",

staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json

@@ -1050,6 +1050,10 @@
 			"ImportPath": "k8s.io/apimachinery/pkg/util/diff",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
+		{
+			"ImportPath": "k8s.io/apimachinery/pkg/util/duration",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/errors",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
@@ -1910,6 +1914,10 @@
 			"ImportPath": "k8s.io/client-go/testing",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
+		{
+			"ImportPath": "k8s.io/client-go/third_party/forked/golang/template",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
 		{
 			"ImportPath": "k8s.io/client-go/tools/auth",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
@@ -2006,6 +2014,10 @@
 			"ImportPath": "k8s.io/apimachinery/pkg/api/meta",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
+		{
+			"ImportPath": "k8s.io/apimachinery/pkg/api/meta/table",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/api/resource",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
@@ -2042,6 +2054,10 @@
 			"ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
+		{
+			"ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1beta1",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/conversion",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
@@ -2242,6 +2258,10 @@
 			"ImportPath": "k8s.io/client-go/util/flowcontrol",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 		},
+		{
+			"ImportPath": "k8s.io/client-go/util/jsonpath",
+			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+		},
 		{
 			"ImportPath": "k8s.io/client-go/util/workqueue",
 			"Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/validation/validation.go

@@ -219,7 +219,7 @@ func ValidateCustomResourceDefinitionValidation(customResourceValidation *apiext
 
 	// if validation passed otherwise, make sure we can actually construct a schema validator from this custom resource validation.
 	if len(allErrs) == 0 {
-		if _, err := apiservervalidation.NewSchemaValidator(customResourceValidation); err != nil {
+		if _, _, err := apiservervalidation.NewSchemaValidator(customResourceValidation); err != nil {
 			allErrs = append(allErrs, field.Invalid(fldPath, "", fmt.Sprintf("error building validator: %v", err)))
 		}
 	}

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/BUILD

@@ -35,6 +35,7 @@ go_library(
         "//vendor/k8s.io/apiextensions-apiserver/pkg/controller/status:go_default_library",
         "//vendor/k8s.io/apiextensions-apiserver/pkg/features:go_default_library",
         "//vendor/k8s.io/apiextensions-apiserver/pkg/registry/customresource:go_default_library",
+        "//vendor/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor:go_default_library",
         "//vendor/k8s.io/apiextensions-apiserver/pkg/registry/customresourcedefinition:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/customresource_handler.go

@@ -64,6 +64,7 @@ import (
 	"k8s.io/apiextensions-apiserver/pkg/controller/finalizer"
 	apiextensionsfeatures "k8s.io/apiextensions-apiserver/pkg/features"
 	"k8s.io/apiextensions-apiserver/pkg/registry/customresource"
+	"k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor"
 )
 
 // crdHandler serves the `/apis` endpoint.
@@ -420,7 +421,7 @@ func (r *crdHandler) getOrCreateServingInfoFor(crd *apiextensions.CustomResource
 	}
 	creator := unstructuredCreator{}
 
-	validator, err := apiservervalidation.NewSchemaValidator(crd.Spec.Validation)
+	validator, _, err := apiservervalidation.NewSchemaValidator(crd.Spec.Validation)
 	if err != nil {
 		return nil, err
 	}
@@ -447,6 +448,12 @@ func (r *crdHandler) getOrCreateServingInfoFor(crd *apiextensions.CustomResource
 		scaleSpec = crd.Spec.Subresources.Scale
 	}
 
+	// TODO: identify how to pass printer specification from the CRD
+	table, err := tableconvertor.New(nil)
+	if err != nil {
+		glog.V(2).Infof("The CRD for %v has an invalid printer specification, falling back to default printing: %v", kind, err)
+	}
+
 	customResourceStorage := customresource.NewStorage(
 		schema.GroupResource{Group: crd.Spec.Group, Resource: crd.Status.AcceptedNames.Plural},
 		schema.GroupVersionKind{Group: crd.Spec.Group, Version: crd.Spec.Version, Kind: crd.Status.AcceptedNames.ListKind},
@@ -459,7 +466,9 @@ func (r *crdHandler) getOrCreateServingInfoFor(crd *apiextensions.CustomResource
 			statusSpec,
 			scaleSpec,
 		),
-		r.restOptionsGetter, crd.Status.AcceptedNames.Categories,
+		r.restOptionsGetter,
+		crd.Status.AcceptedNames.Categories,
+		table,
 	)
 
 	selfLinkPrefix := ""
@@ -506,6 +515,8 @@ func (r *crdHandler) getOrCreateServingInfoFor(crd *apiextensions.CustomResource
 		Kind:     kind,
 
 		MetaGroupVersion: metav1.SchemeGroupVersion,
+
+		TableConvertor: customResourceStorage.CustomResource,
 	}
 
 	ret := &crdInfo{

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/validation/validation.go

@@ -25,15 +25,15 @@ import (
 )
 
 // NewSchemaValidator creates an openapi schema validator for the given CRD validation.
-func NewSchemaValidator(customResourceValidation *apiextensions.CustomResourceValidation) (*validate.SchemaValidator, error) {
+func NewSchemaValidator(customResourceValidation *apiextensions.CustomResourceValidation) (*validate.SchemaValidator, *spec.Schema, error) {
 	// Convert CRD schema to openapi schema
 	openapiSchema := &spec.Schema{}
 	if customResourceValidation != nil {
 		if err := ConvertJSONSchemaProps(customResourceValidation.OpenAPIV3Schema, openapiSchema); err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 	}
-	return validate.NewSchemaValidator(openapiSchema, nil, "", strfmt.Default), nil
+	return validate.NewSchemaValidator(openapiSchema, nil, "", strfmt.Default), openapiSchema, nil
 }
 
 // ValidateCustomResource validates the Custom Resource against the schema in the CustomResourceDefinition.

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/BUILD

@@ -54,7 +54,10 @@ filegroup(
 
 filegroup(
     name = "all-srcs",
-    srcs = [":package-srcs"],
+    srcs = [
+        ":package-srcs",
+        "//staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor:all-srcs",
+    ],
     tags = ["automanaged"],
 )
 
@@ -66,6 +69,7 @@ go_test(
         "//vendor/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions:go_default_library",
         "//vendor/k8s.io/apiextensions-apiserver/pkg/apiserver:go_default_library",
         "//vendor/k8s.io/apiextensions-apiserver/pkg/registry/customresource:go_default_library",
+        "//vendor/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/etcd.go

@@ -39,8 +39,8 @@ type CustomResourceStorage struct {
 	Scale          *ScaleREST
 }
 
-func NewStorage(resource schema.GroupResource, listKind schema.GroupVersionKind, strategy customResourceStrategy, optsGetter generic.RESTOptionsGetter, categories []string) CustomResourceStorage {
-	customResourceREST, customResourceStatusREST := newREST(resource, listKind, strategy, optsGetter, categories)
+func NewStorage(resource schema.GroupResource, listKind schema.GroupVersionKind, strategy customResourceStrategy, optsGetter generic.RESTOptionsGetter, categories []string, tableConvertor rest.TableConvertor) CustomResourceStorage {
+	customResourceREST, customResourceStatusREST := newREST(resource, listKind, strategy, optsGetter, categories, tableConvertor)
 	customResourceRegistry := NewRegistry(customResourceREST)
 
 	s := CustomResourceStorage{
@@ -75,7 +75,7 @@ type REST struct {
 }
 
 // newREST returns a RESTStorage object that will work against API services.
-func newREST(resource schema.GroupResource, listKind schema.GroupVersionKind, strategy customResourceStrategy, optsGetter generic.RESTOptionsGetter, categories []string) (*REST, *StatusREST) {
+func newREST(resource schema.GroupResource, listKind schema.GroupVersionKind, strategy customResourceStrategy, optsGetter generic.RESTOptionsGetter, categories []string, tableConvertor rest.TableConvertor) (*REST, *StatusREST) {
 	store := &genericregistry.Store{
 		NewFunc: func() runtime.Object { return &unstructured.Unstructured{} },
 		NewListFunc: func() runtime.Object {
@@ -90,6 +90,8 @@ func newREST(resource schema.GroupResource, listKind schema.GroupVersionKind, st
 		CreateStrategy: strategy,
 		UpdateStrategy: strategy,
 		DeleteStrategy: strategy,
+
+		TableConvertor: tableConvertor,
 	}
 	options := &generic.StoreOptions{RESTOptions: optsGetter, AttrFunc: strategy.GetAttrs}
 	if err := store.CompleteWithOptions(options); err != nil {

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/etcd_test.go

@@ -40,6 +40,7 @@ import (
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions"
 	"k8s.io/apiextensions-apiserver/pkg/apiserver"
 	"k8s.io/apiextensions-apiserver/pkg/registry/customresource"
+	"k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor"
 )
 
 func newStorage(t *testing.T) (customresource.CustomResourceStorage, *etcdtesting.EtcdTestServer) {
@@ -71,6 +72,9 @@ func newStorage(t *testing.T) (customresource.CustomResourceStorage, *etcdtestin
 
 	status := &apiextensions.CustomResourceSubresourceStatus{}
 
+	// TODO: identify how to pass printer specification from the CRD
+	table, _ := tableconvertor.New(nil)
+
 	storage := customresource.NewStorage(
 		schema.GroupResource{Group: "mygroup.example.com", Resource: "noxus"},
 		schema.GroupVersionKind{Group: "mygroup.example.com", Version: "v1beta1", Kind: "NoxuItemList"},
@@ -83,7 +87,9 @@ func newStorage(t *testing.T) (customresource.CustomResourceStorage, *etcdtestin
 			status,
 			scale,
 		),
-		restOptions, []string{"all"},
+		restOptions,
+		[]string{"all"},
+		table,
 	)
 
 	return storage, server

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/BUILD

@@ -0,0 +1,33 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["tableconvertor.go"],
+    importpath = "k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/github.com/go-openapi/spec:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/meta/table:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1beta1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/endpoints/request:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/rest:go_default_library",
+        "//vendor/k8s.io/client-go/util/jsonpath:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/tableconvertor.go

@@ -0,0 +1,120 @@
+/*
+Copyright 2018 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 tableconvertor
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+
+	"github.com/go-openapi/spec"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	metatable "k8s.io/apimachinery/pkg/api/meta/table"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
+	"k8s.io/apimachinery/pkg/runtime"
+	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/apiserver/pkg/registry/rest"
+	"k8s.io/client-go/util/jsonpath"
+)
+
+const printColumnsKey = "x-kubernetes-print-columns"
+
+var swaggerMetadataDescriptions = metav1.ObjectMeta{}.SwaggerDoc()
+
+// New creates a new table convertor for the provided OpenAPI schema. If the printer definition cannot be parsed,
+// error will be returned along with a default table convertor.
+func New(extensions spec.Extensions) (rest.TableConvertor, error) {
+	headers := []metav1beta1.TableColumnDefinition{
+		{Name: "Name", Type: "string", Format: "name", Description: swaggerMetadataDescriptions["name"]},
+		{Name: "Created At", Type: "date", Description: swaggerMetadataDescriptions["creationTimestamp"]},
+	}
+	c := &convertor{
+		headers: headers,
+	}
+	format, ok := extensions.GetString(printColumnsKey)
+	if !ok {
+		return c, nil
+	}
+	// "x-kubernetes-print-columns": "custom-columns=NAME:.metadata.name,RSRC:.metadata.resourceVersion"
+	parts := strings.SplitN(format, "=", 2)
+	if len(parts) != 2 || parts[0] != "custom-columns" {
+		return c, fmt.Errorf("unrecognized column definition in 'x-kubernetes-print-columns', only support 'custom-columns=NAME=JSONPATH[,NAME=JSONPATH]'")
+	}
+	columnSpecs := strings.Split(parts[1], ",")
+	var columns []*jsonpath.JSONPath
+	for _, spec := range columnSpecs {
+		parts := strings.SplitN(spec, ":", 2)
+		if len(parts) != 2 || len(parts[0]) == 0 || len(parts[1]) == 0 {
+			return c, fmt.Errorf("unrecognized column definition in 'x-kubernetes-print-columns', must specify NAME=JSONPATH: %s", spec)
+		}
+		path := jsonpath.New(parts[0])
+		if err := path.Parse(parts[1]); err != nil {
+			return c, fmt.Errorf("unrecognized column definition in 'x-kubernetes-print-columns': %v", spec)
+		}
+		path.AllowMissingKeys(true)
+		columns = append(columns, path)
+		headers = append(headers, metav1beta1.TableColumnDefinition{
+			Name:        parts[0],
+			Type:        "string",
+			Description: fmt.Sprintf("Custom resource definition column from OpenAPI (in JSONPath format): %s", parts[1]),
+		})
+	}
+	c.columns = columns
+	c.headers = headers
+	return c, nil
+}
+
+type convertor struct {
+	headers []metav1beta1.TableColumnDefinition
+	columns []*jsonpath.JSONPath
+}
+
+func (c *convertor) ConvertToTable(ctx genericapirequest.Context, obj runtime.Object, tableOptions runtime.Object) (*metav1beta1.Table, error) {
+	table := &metav1beta1.Table{
+		ColumnDefinitions: c.headers,
+	}
+	if m, err := meta.ListAccessor(obj); err == nil {
+		table.ResourceVersion = m.GetResourceVersion()
+		table.SelfLink = m.GetSelfLink()
+		table.Continue = m.GetContinue()
+	} else {
+		if m, err := meta.CommonAccessor(obj); err == nil {
+			table.ResourceVersion = m.GetResourceVersion()
+			table.SelfLink = m.GetSelfLink()
+		}
+	}
+
+	var err error
+	buf := &bytes.Buffer{}
+	table.Rows, err = metatable.MetaToTableRow(obj, func(obj runtime.Object, m metav1.Object, name, age string) ([]interface{}, error) {
+		cells := make([]interface{}, 2, 2+len(c.columns))
+		cells[0] = name
+		cells[1] = age
+		for _, column := range c.columns {
+			if err := column.Execute(buf, obj); err != nil {
+				cells = append(cells, nil)
+				continue
+			}
+			cells = append(cells, buf.String())
+			buf.Reset()
+		}
+		return cells, nil
+	})
+	return table, err
+}

staging/src/k8s.io/apimachinery/pkg/api/meta/BUILD

@@ -64,6 +64,9 @@ filegroup(
 
 filegroup(
     name = "all-srcs",
-    srcs = [":package-srcs"],
+    srcs = [
+        ":package-srcs",
+        "//staging/src/k8s.io/apimachinery/pkg/api/meta/table:all-srcs",
+    ],
     tags = ["automanaged"],
 )

staging/src/k8s.io/apimachinery/pkg/api/meta/table/BUILD

@@ -0,0 +1,29 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["table.go"],
+    importpath = "k8s.io/apimachinery/pkg/api/meta/table",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1beta1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/duration:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

staging/src/k8s.io/apimachinery/pkg/api/meta/table/table.go

@@ -0,0 +1,71 @@
+/*
+Copyright 2018 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 table
+
+import (
+	"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/runtime"
+	"k8s.io/apimachinery/pkg/util/duration"
+)
+
+// MetaToTableRow converts a list or object into one or more table rows. The provided rowFn is invoked for
+// each accessed item, with name and age being passed to each.
+func MetaToTableRow(obj runtime.Object, rowFn func(obj runtime.Object, m metav1.Object, name, age string) ([]interface{}, error)) ([]metav1beta1.TableRow, error) {
+	if meta.IsListType(obj) {
+		rows := make([]metav1beta1.TableRow, 0, 16)
+		err := meta.EachListItem(obj, func(obj runtime.Object) error {
+			nestedRows, err := MetaToTableRow(obj, rowFn)
+			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, err = rowFn(obj, m, m.GetName(), translateTimestamp(m.GetCreationTimestamp()))
+	if err != nil {
+		return nil, err
+	}
+	rows = append(rows, row)
+	return rows, nil
+}
+
+// translateTimestamp returns the elapsed time since timestamp in
+// human-readable approximation.
+func translateTimestamp(timestamp metav1.Time) string {
+	if timestamp.IsZero() {
+		return "<unknown>"
+	}
+	return duration.ShortHumanDuration(time.Now().Sub(timestamp.Time))
+}

staging/src/k8s.io/apimachinery/pkg/util/duration/BUILD

@@ -0,0 +1,22 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["duration.go"],
+    importpath = "k8s.io/apimachinery/pkg/util/duration",
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

staging/src/k8s.io/apimachinery/pkg/util/duration/duration.go

@@ -1,5 +1,5 @@
 /*
-Copyright 2014 The Kubernetes Authors.
+Copyright 2018 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.
@@ -14,13 +14,15 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package printers
+package duration
 
 import (
 	"fmt"
 	"time"
 )
 
+// ShortHumanDuration returns a succint representation of the provided duration
+// with limited precision for consumption by humans.
 func ShortHumanDuration(d time.Duration) string {
 	// Allow deviation no more than 2 seconds(excluded) to tolerate machine time
 	// inconsistence, it can be considered as almost now.