mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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124 lines
3.7 KiB
Go
124 lines
3.7 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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// A set of common functions needed by cmd/kubectl and pkg/kubectl packages.
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package kubectl
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import (
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"fmt"
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"strings"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/meta"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
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)
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const kubectlAnnotationPrefix = "kubectl.kubernetes.io/"
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type NamespaceInfo struct {
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Namespace string
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}
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// TODO Move to labels package.
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func formatLabels(labelMap map[string]string) string {
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l := labels.Set(labelMap).String()
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if l == "" {
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l = "<none>"
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}
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return l
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}
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func listOfImages(spec *api.PodSpec) []string {
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var images []string
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for _, container := range spec.Containers {
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images = append(images, container.Image)
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}
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return images
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}
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func makeImageList(spec *api.PodSpec) string {
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return strings.Join(listOfImages(spec), ",")
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}
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// OutputVersionMapper is a RESTMapper that will prefer mappings that
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// correspond to a preferred output version (if feasible)
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type OutputVersionMapper struct {
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meta.RESTMapper
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OutputVersion string
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}
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// RESTMapping implements meta.RESTMapper by prepending the output version to the preferred version list.
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func (m OutputVersionMapper) RESTMapping(kind string, versions ...string) (*meta.RESTMapping, error) {
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preferred := []string{m.OutputVersion}
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for _, version := range versions {
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if len(version) > 0 {
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preferred = append(preferred, version)
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}
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}
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// if the caller wants to use the default version list, try with the preferred version, and on
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// error, use the default behavior.
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if len(preferred) == 1 {
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if m, err := m.RESTMapper.RESTMapping(kind, preferred...); err == nil {
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return m, nil
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}
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preferred = nil
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}
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return m.RESTMapper.RESTMapping(kind, preferred...)
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}
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// ShortcutExpander is a RESTMapper that can be used for Kubernetes
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// resources.
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type ShortcutExpander struct {
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meta.RESTMapper
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}
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// VersionAndKindForResource implements meta.RESTMapper. It expands the resource first, then invokes the wrapped
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// mapper.
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func (e ShortcutExpander) VersionAndKindForResource(resource string) (defaultVersion, kind string, err error) {
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resource = expandResourceShortcut(resource)
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defaultVersion, kind, err = e.RESTMapper.VersionAndKindForResource(resource)
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// TODO: remove this once v1beta1 and v1beta2 are deprecated
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if err == nil && kind == "Minion" {
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err = fmt.Errorf("Alias minion(s) is deprecated. Use node(s) instead")
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}
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return defaultVersion, kind, err
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}
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// expandResourceShortcut will return the expanded version of resource
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// (something that a pkg/api/meta.RESTMapper can understand), if it is
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// indeed a shortcut. Otherwise, will return resource unmodified.
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func expandResourceShortcut(resource string) string {
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shortForms := map[string]string{
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// Please keep this alphabetized
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"cs": "componentstatuses",
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"ev": "events",
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"ep": "endpoints",
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"limits": "limitranges",
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"no": "nodes",
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"ns": "namespaces",
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"po": "pods",
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"pv": "persistentvolumes",
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"pvc": "persistentvolumeclaims",
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"quota": "resourcequotas",
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"rc": "replicationcontrollers",
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"svc": "services",
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}
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if expanded, ok := shortForms[resource]; ok {
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return expanded
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}
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return resource
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}
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