2fd38a7dc0
Most of the logic related to type and kind retrieval belongs in the codec, not in the various classes. Make it explicit that the codec should handle these details. Factory now returns a universal Decoder and a JSONEncoder to assist code in kubectl that needs to specifically deal with JSON serialization (apply, merge, patch, edit, jsonpath). Add comments to indicate the serialization is explicit in those places. These methods decode to internal and encode to the preferred API version as previous, although in the future they may be changed. React to removing Codec from version interfaces and RESTMapping by passing it in to all the places that it is needed.
630 lines
19 KiB
Go
630 lines
19 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cmd
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"reflect"
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/meta"
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"k8s.io/kubernetes/pkg/api/testapi"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/api/validation"
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client "k8s.io/kubernetes/pkg/client/unversioned"
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"k8s.io/kubernetes/pkg/client/unversioned/fake"
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"k8s.io/kubernetes/pkg/kubectl"
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cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
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"k8s.io/kubernetes/pkg/kubectl/resource"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/runtime/serializer"
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"k8s.io/kubernetes/pkg/util"
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)
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func initTestErrorHandler(t *testing.T) {
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cmdutil.BehaviorOnFatal(func(str string) {
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t.Errorf("Error running command: %s", str)
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})
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}
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type internalType struct {
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Kind string
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APIVersion string
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Name string
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}
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type externalType struct {
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Kind string `json:"kind"`
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APIVersion string `json:"apiVersion"`
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Name string `json:"name"`
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}
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type ExternalType2 struct {
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Kind string `json:"kind"`
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APIVersion string `json:"apiVersion"`
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Name string `json:"name"`
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}
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func (obj *internalType) GetObjectKind() unversioned.ObjectKind { return obj }
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func (obj *internalType) SetGroupVersionKind(gvk *unversioned.GroupVersionKind) {
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obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
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}
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func (obj *internalType) GroupVersionKind() *unversioned.GroupVersionKind {
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return unversioned.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
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}
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func (obj *externalType) GetObjectKind() unversioned.ObjectKind { return obj }
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func (obj *externalType) SetGroupVersionKind(gvk *unversioned.GroupVersionKind) {
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obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
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}
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func (obj *externalType) GroupVersionKind() *unversioned.GroupVersionKind {
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return unversioned.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
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}
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func (obj *ExternalType2) GetObjectKind() unversioned.ObjectKind { return obj }
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func (obj *ExternalType2) SetGroupVersionKind(gvk *unversioned.GroupVersionKind) {
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obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
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}
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func (obj *ExternalType2) GroupVersionKind() *unversioned.GroupVersionKind {
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return unversioned.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
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}
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var versionErr = errors.New("not a version")
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func versionErrIfFalse(b bool) error {
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if b {
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return nil
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}
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return versionErr
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}
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var validVersion = testapi.Default.GroupVersion().Version
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var internalGV = unversioned.GroupVersion{Group: "apitest", Version: runtime.APIVersionInternal}
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var unlikelyGV = unversioned.GroupVersion{Group: "apitest", Version: "unlikelyversion"}
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var validVersionGV = unversioned.GroupVersion{Group: "apitest", Version: validVersion}
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func newExternalScheme() (*runtime.Scheme, meta.RESTMapper, runtime.Codec) {
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scheme := runtime.NewScheme()
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scheme.AddKnownTypeWithName(internalGV.WithKind("Type"), &internalType{})
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scheme.AddKnownTypeWithName(unlikelyGV.WithKind("Type"), &externalType{})
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//This tests that kubectl will not confuse the external scheme with the internal scheme, even when they accidentally have versions of the same name.
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scheme.AddKnownTypeWithName(validVersionGV.WithKind("Type"), &ExternalType2{})
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codecs := serializer.NewCodecFactory(scheme)
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codec := codecs.LegacyCodec(unlikelyGV)
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mapper := meta.NewDefaultRESTMapper([]unversioned.GroupVersion{unlikelyGV, validVersionGV}, func(version unversioned.GroupVersion) (*meta.VersionInterfaces, error) {
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return &meta.VersionInterfaces{
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ObjectConvertor: scheme,
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MetadataAccessor: meta.NewAccessor(),
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}, versionErrIfFalse(version == validVersionGV || version == unlikelyGV)
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})
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for _, gv := range []unversioned.GroupVersion{unlikelyGV, validVersionGV} {
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for kind := range scheme.KnownTypes(gv) {
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gvk := gv.WithKind(kind)
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mixedCase := false
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scope := meta.RESTScopeNamespace
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mapper.Add(gvk, scope, mixedCase)
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}
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}
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return scheme, mapper, codec
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}
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type testPrinter struct {
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Objects []runtime.Object
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Err error
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}
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func (t *testPrinter) PrintObj(obj runtime.Object, out io.Writer) error {
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t.Objects = append(t.Objects, obj)
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fmt.Fprintf(out, "%#v", obj)
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return t.Err
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}
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// TODO: implement HandledResources()
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func (t *testPrinter) HandledResources() []string {
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return []string{}
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}
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type testDescriber struct {
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Name, Namespace string
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Output string
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Err error
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}
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func (t *testDescriber) Describe(namespace, name string) (output string, err error) {
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t.Namespace, t.Name = namespace, name
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return t.Output, t.Err
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}
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type testFactory struct {
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Mapper meta.RESTMapper
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Typer runtime.ObjectTyper
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Client kubectl.RESTClient
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Describer kubectl.Describer
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Printer kubectl.ResourcePrinter
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Validator validation.Schema
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Namespace string
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ClientConfig *client.Config
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Err error
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}
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func NewTestFactory() (*cmdutil.Factory, *testFactory, runtime.Codec) {
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scheme, mapper, codec := newExternalScheme()
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t := &testFactory{
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Validator: validation.NullSchema{},
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Mapper: mapper,
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Typer: scheme,
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}
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return &cmdutil.Factory{
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Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
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return t.Mapper, t.Typer
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},
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ClientForMapping: func(*meta.RESTMapping) (resource.RESTClient, error) {
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return t.Client, t.Err
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},
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Decoder: func(bool) runtime.Decoder {
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return codec
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},
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JSONEncoder: func() runtime.Encoder {
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return codec
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},
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Describer: func(*meta.RESTMapping) (kubectl.Describer, error) {
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return t.Describer, t.Err
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},
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Printer: func(mapping *meta.RESTMapping, noHeaders, withNamespace bool, wide bool, showAll bool, absoluteTimestamps bool, columnLabels []string) (kubectl.ResourcePrinter, error) {
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return t.Printer, t.Err
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},
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Validator: func(validate bool, cacheDir string) (validation.Schema, error) {
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return t.Validator, t.Err
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},
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DefaultNamespace: func() (string, bool, error) {
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return t.Namespace, false, t.Err
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},
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ClientConfig: func() (*client.Config, error) {
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return t.ClientConfig, t.Err
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},
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}, t, codec
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}
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func NewMixedFactory(apiClient resource.RESTClient) (*cmdutil.Factory, *testFactory, runtime.Codec) {
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f, t, c := NewTestFactory()
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f.Object = func() (meta.RESTMapper, runtime.ObjectTyper) {
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return meta.MultiRESTMapper{t.Mapper, testapi.Default.RESTMapper()}, runtime.MultiObjectTyper{t.Typer, api.Scheme}
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}
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f.ClientForMapping = func(m *meta.RESTMapping) (resource.RESTClient, error) {
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if m.ObjectConvertor == api.Scheme {
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return apiClient, t.Err
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}
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return t.Client, t.Err
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}
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return f, t, c
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}
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func NewAPIFactory() (*cmdutil.Factory, *testFactory, runtime.Codec) {
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t := &testFactory{
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Validator: validation.NullSchema{},
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}
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f := &cmdutil.Factory{
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Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
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return testapi.Default.RESTMapper(), api.Scheme
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},
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Client: func() (*client.Client, error) {
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// Swap out the HTTP client out of the client with the fake's version.
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fakeClient := t.Client.(*fake.RESTClient)
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c := client.NewOrDie(t.ClientConfig)
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c.Client = fakeClient.Client
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c.ExtensionsClient.Client = fakeClient.Client
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return c, t.Err
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},
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ClientForMapping: func(*meta.RESTMapping) (resource.RESTClient, error) {
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return t.Client, t.Err
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},
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Decoder: func(bool) runtime.Decoder {
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return testapi.Default.Codec()
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},
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JSONEncoder: func() runtime.Encoder {
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return testapi.Default.Codec()
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},
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Describer: func(*meta.RESTMapping) (kubectl.Describer, error) {
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return t.Describer, t.Err
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},
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Printer: func(mapping *meta.RESTMapping, noHeaders, withNamespace bool, wide bool, showAll bool, absoluteTimestamps bool, columnLabels []string) (kubectl.ResourcePrinter, error) {
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return t.Printer, t.Err
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},
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Validator: func(validate bool, cacheDir string) (validation.Schema, error) {
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return t.Validator, t.Err
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},
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DefaultNamespace: func() (string, bool, error) {
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return t.Namespace, false, t.Err
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},
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ClientConfig: func() (*client.Config, error) {
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return t.ClientConfig, t.Err
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},
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Generators: func(cmdName string) map[string]kubectl.Generator {
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return cmdutil.DefaultGenerators(cmdName)
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},
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LogsForObject: func(object, options runtime.Object) (*client.Request, error) {
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fakeClient := t.Client.(*fake.RESTClient)
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c := client.NewOrDie(t.ClientConfig)
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c.Client = fakeClient.Client
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switch t := object.(type) {
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case *api.Pod:
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opts, ok := options.(*api.PodLogOptions)
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if !ok {
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return nil, errors.New("provided options object is not a PodLogOptions")
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}
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return c.Pods(t.Namespace).GetLogs(t.Name, opts), nil
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default:
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fqKind, err := api.Scheme.ObjectKind(object)
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if err != nil {
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return nil, err
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}
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return nil, fmt.Errorf("cannot get the logs from %v", fqKind)
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}
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},
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}
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rf := cmdutil.NewFactory(nil)
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f.PodSelectorForObject = rf.PodSelectorForObject
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f.PortsForObject = rf.PortsForObject
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f.LabelsForObject = rf.LabelsForObject
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f.CanBeExposed = rf.CanBeExposed
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return f, t, testapi.Default.Codec()
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}
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func objBody(codec runtime.Codec, obj runtime.Object) io.ReadCloser {
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return ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(codec, obj))))
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}
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func stringBody(body string) io.ReadCloser {
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return ioutil.NopCloser(bytes.NewReader([]byte(body)))
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}
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// TODO(jlowdermilk): refactor the Factory so we can test client versions properly,
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// with different client/server version skew scenarios.
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// Verify that resource.RESTClients constructed from a factory respect mapping.APIVersion
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//func TestClientVersions(t *testing.T) {
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// f := cmdutil.NewFactory(nil)
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//
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// version := testapi.Default.Version()
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// mapping := &meta.RESTMapping{
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// APIVersion: version,
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// }
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// c, err := f.ClientForMapping(mapping)
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// if err != nil {
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// t.Errorf("unexpected error: %v", err)
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// }
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// client := c.(*client.RESTClient)
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// if client.APIVersion() != version {
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// t.Errorf("unexpected Client APIVersion: %s %v", client.APIVersion, client)
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// }
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//}
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func ExamplePrintReplicationControllerWithNamespace() {
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f, tf, codec := NewAPIFactory()
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tf.Printer = kubectl.NewHumanReadablePrinter(false, true, false, false, false, []string{})
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tf.Client = &fake.RESTClient{
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Codec: codec,
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Client: nil,
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}
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cmd := NewCmdRun(f, os.Stdin, os.Stdout, os.Stderr)
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ctrl := &api.ReplicationController{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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Namespace: "beep",
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Labels: map[string]string{"foo": "bar"},
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CreationTimestamp: unversioned.Time{Time: time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.ReplicationControllerSpec{
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Replicas: 1,
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Selector: map[string]string{"foo": "bar"},
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Template: &api.PodTemplateSpec{
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ObjectMeta: api.ObjectMeta{
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Labels: map[string]string{"foo": "bar"},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "foo",
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Image: "someimage",
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},
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},
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},
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},
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},
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}
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err := f.PrintObject(cmd, ctrl, os.Stdout)
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if err != nil {
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fmt.Printf("Unexpected error: %v", err)
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}
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// Output:
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// NAMESPACE CONTROLLER CONTAINER(S) IMAGE(S) SELECTOR REPLICAS AGE
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// beep foo foo someimage foo=bar 1 10y
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}
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func ExamplePrintPodWithWideFormat() {
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f, tf, codec := NewAPIFactory()
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tf.Printer = kubectl.NewHumanReadablePrinter(false, false, true, false, false, []string{})
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tf.Client = &fake.RESTClient{
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Codec: codec,
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Client: nil,
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}
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nodeName := "kubernetes-minion-abcd"
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cmd := NewCmdRun(f, os.Stdin, os.Stdout, os.Stderr)
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "test1",
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CreationTimestamp: unversioned.Time{Time: time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.PodSpec{
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Containers: make([]api.Container, 2),
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NodeName: nodeName,
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},
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Status: api.PodStatus{
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Phase: "podPhase",
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ContainerStatuses: []api.ContainerStatus{
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{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
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{RestartCount: 3},
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},
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},
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}
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err := f.PrintObject(cmd, pod, os.Stdout)
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if err != nil {
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fmt.Printf("Unexpected error: %v", err)
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}
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// Output:
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// NAME READY STATUS RESTARTS AGE NODE
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// test1 1/2 podPhase 6 10y kubernetes-minion-abcd
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}
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func newAllPhasePodList() *api.PodList {
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nodeName := "kubernetes-minion-abcd"
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return &api.PodList{
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Items: []api.Pod{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "test1",
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CreationTimestamp: unversioned.Time{time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.PodSpec{
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Containers: make([]api.Container, 2),
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NodeName: nodeName,
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},
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Status: api.PodStatus{
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Phase: api.PodPending,
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ContainerStatuses: []api.ContainerStatus{
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{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
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{RestartCount: 3},
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},
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},
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},
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{
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ObjectMeta: api.ObjectMeta{
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Name: "test2",
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CreationTimestamp: unversioned.Time{time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.PodSpec{
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Containers: make([]api.Container, 2),
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NodeName: nodeName,
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},
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Status: api.PodStatus{
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Phase: api.PodRunning,
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ContainerStatuses: []api.ContainerStatus{
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{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
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{RestartCount: 3},
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},
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},
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},
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{
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ObjectMeta: api.ObjectMeta{
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Name: "test3",
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CreationTimestamp: unversioned.Time{time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.PodSpec{
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Containers: make([]api.Container, 2),
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NodeName: nodeName,
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},
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Status: api.PodStatus{
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Phase: api.PodSucceeded,
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ContainerStatuses: []api.ContainerStatus{
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{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
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{RestartCount: 3},
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},
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},
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},
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{
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ObjectMeta: api.ObjectMeta{
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Name: "test4",
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CreationTimestamp: unversioned.Time{time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.PodSpec{
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Containers: make([]api.Container, 2),
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NodeName: nodeName,
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},
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Status: api.PodStatus{
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Phase: api.PodFailed,
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ContainerStatuses: []api.ContainerStatus{
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{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
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{RestartCount: 3},
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},
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},
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},
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{
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ObjectMeta: api.ObjectMeta{
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Name: "test5",
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CreationTimestamp: unversioned.Time{time.Now().AddDate(-10, 0, 0)},
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},
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Spec: api.PodSpec{
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Containers: make([]api.Container, 2),
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NodeName: nodeName,
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},
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Status: api.PodStatus{
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Phase: api.PodUnknown,
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ContainerStatuses: []api.ContainerStatus{
|
|
{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
|
|
{RestartCount: 3},
|
|
},
|
|
},
|
|
}},
|
|
}
|
|
}
|
|
|
|
func ExamplePrintPodHideTerminated() {
|
|
f, tf, codec := NewAPIFactory()
|
|
tf.Printer = kubectl.NewHumanReadablePrinter(false, false, false, false, false, []string{})
|
|
tf.Client = &fake.RESTClient{
|
|
Codec: codec,
|
|
Client: nil,
|
|
}
|
|
cmd := NewCmdRun(f, os.Stdin, os.Stdout, os.Stderr)
|
|
podList := newAllPhasePodList()
|
|
err := f.PrintObject(cmd, podList, os.Stdout)
|
|
if err != nil {
|
|
fmt.Printf("Unexpected error: %v", err)
|
|
}
|
|
// Output:
|
|
// NAME READY STATUS RESTARTS AGE
|
|
// test1 1/2 Pending 6 10y
|
|
// test2 1/2 Running 6 10y
|
|
// test5 1/2 Unknown 6 10y
|
|
}
|
|
|
|
func ExamplePrintPodShowAll() {
|
|
f, tf, codec := NewAPIFactory()
|
|
tf.Printer = kubectl.NewHumanReadablePrinter(false, false, false, true, false, []string{})
|
|
tf.Client = &fake.RESTClient{
|
|
Codec: codec,
|
|
Client: nil,
|
|
}
|
|
cmd := NewCmdRun(f, os.Stdin, os.Stdout, os.Stderr)
|
|
podList := newAllPhasePodList()
|
|
err := f.PrintObject(cmd, podList, os.Stdout)
|
|
if err != nil {
|
|
fmt.Printf("Unexpected error: %v", err)
|
|
}
|
|
// Output:
|
|
// NAME READY STATUS RESTARTS AGE
|
|
// test1 1/2 Pending 6 10y
|
|
// test2 1/2 Running 6 10y
|
|
// test3 1/2 Succeeded 6 10y
|
|
// test4 1/2 Failed 6 10y
|
|
// test5 1/2 Unknown 6 10y
|
|
}
|
|
|
|
func ExamplePrintServiceWithNamespacesAndLabels() {
|
|
f, tf, codec := NewAPIFactory()
|
|
tf.Printer = kubectl.NewHumanReadablePrinter(false, true, false, false, false, []string{"l1"})
|
|
tf.Client = &fake.RESTClient{
|
|
Codec: codec,
|
|
Client: nil,
|
|
}
|
|
cmd := NewCmdRun(f, os.Stdin, os.Stdout, os.Stderr)
|
|
svc := &api.ServiceList{
|
|
Items: []api.Service{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "svc1",
|
|
Namespace: "ns1",
|
|
CreationTimestamp: unversioned.Time{Time: time.Now().AddDate(-10, 0, 0)},
|
|
Labels: map[string]string{
|
|
"l1": "value",
|
|
},
|
|
},
|
|
Spec: api.ServiceSpec{
|
|
Ports: []api.ServicePort{
|
|
{Protocol: "UDP", Port: 53},
|
|
{Protocol: "TCP", Port: 53},
|
|
},
|
|
Selector: map[string]string{
|
|
"s": "magic",
|
|
},
|
|
ClusterIP: "10.1.1.1",
|
|
},
|
|
Status: api.ServiceStatus{},
|
|
},
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "svc2",
|
|
Namespace: "ns2",
|
|
CreationTimestamp: unversioned.Time{Time: time.Now().AddDate(-10, 0, 0)},
|
|
Labels: map[string]string{
|
|
"l1": "dolla-bill-yall",
|
|
},
|
|
},
|
|
Spec: api.ServiceSpec{
|
|
Ports: []api.ServicePort{
|
|
{Protocol: "TCP", Port: 80},
|
|
{Protocol: "TCP", Port: 8080},
|
|
},
|
|
Selector: map[string]string{
|
|
"s": "kazam",
|
|
},
|
|
ClusterIP: "10.1.1.2",
|
|
},
|
|
Status: api.ServiceStatus{},
|
|
}},
|
|
}
|
|
ld := util.NewLineDelimiter(os.Stdout, "|")
|
|
defer ld.Flush()
|
|
err := f.PrintObject(cmd, svc, ld)
|
|
if err != nil {
|
|
fmt.Printf("Unexpected error: %v", err)
|
|
}
|
|
// Output:
|
|
// |NAMESPACE NAME CLUSTER_IP EXTERNAL_IP PORT(S) SELECTOR AGE L1|
|
|
// |ns1 svc1 10.1.1.1 unknown 53/UDP,53/TCP s=magic 10y value|
|
|
// |ns2 svc2 10.1.1.2 unknown 80/TCP,8080/TCP s=kazam 10y dolla-bill-yall|
|
|
// ||
|
|
}
|
|
|
|
func TestNormalizationFuncGlobalExistence(t *testing.T) {
|
|
// This test can be safely deleted when we will not support multiple flag formats
|
|
root := NewKubectlCommand(cmdutil.NewFactory(nil), os.Stdin, os.Stdout, os.Stderr)
|
|
|
|
if root.Parent() != nil {
|
|
t.Fatal("We expect the root command to be returned")
|
|
}
|
|
if root.GlobalNormalizationFunc() == nil {
|
|
t.Fatal("We expect that root command has a global normalization function")
|
|
}
|
|
|
|
if reflect.ValueOf(root.GlobalNormalizationFunc()).Pointer() != reflect.ValueOf(root.Flags().GetNormalizeFunc()).Pointer() {
|
|
t.Fatal("root command seems to have a wrong normalization function")
|
|
}
|
|
|
|
sub := root
|
|
for sub.HasSubCommands() {
|
|
sub = sub.Commands()[0]
|
|
}
|
|
|
|
// In case of failure of this test check this PR: spf13/cobra#110
|
|
if reflect.ValueOf(sub.Flags().GetNormalizeFunc()).Pointer() != reflect.ValueOf(root.Flags().GetNormalizeFunc()).Pointer() {
|
|
t.Fatal("child and root commands should have the same normalization functions")
|
|
}
|
|
}
|