ffa764d60b
This change allows the namespace in kubeconfig to be overridden by specifying the namespace in the spec file. If namespace is explicitly provided in the command line flags and the spec file has a different namespace, this will cause an error.
130 lines
3.5 KiB
Go
130 lines
3.5 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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"fmt"
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"io"
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"strings"
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"github.com/spf13/cobra"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/errors"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/meta"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl"
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cmdutil "github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl/cmd/util"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl/resource"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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)
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func NewCmdDescribe(f *cmdutil.Factory, out io.Writer) *cobra.Command {
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cmd := &cobra.Command{
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Use: "describe (RESOURCE NAME | RESOURCE/NAME)",
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Short: "Show details of a specific resource",
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Long: `Show details of a specific resource.
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This command joins many API calls together to form a detailed description of a
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given resource.`,
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Example: `// Describe a node
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$ kubectl describe nodes kubernetes-minion-emt8.c.myproject.internal
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// Describe a pod
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$ kubectl describe pods/nginx
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// Describe pods by label name=myLabel
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$ kubectl describe po -l name=myLabel`,
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Run: func(cmd *cobra.Command, args []string) {
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err := RunDescribe(f, out, cmd, args)
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cmdutil.CheckErr(err)
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},
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ValidArgs: kubectl.DescribableResources(),
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}
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cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on")
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return cmd
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}
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func RunDescribe(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
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selector := cmdutil.GetFlagString(cmd, "selector")
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cmdNamespace, _, err := f.DefaultNamespace()
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if err != nil {
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return err
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}
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mapper, typer := f.Object()
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r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
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ContinueOnError().
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NamespaceParam(cmdNamespace).DefaultNamespace().
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SelectorParam(selector).
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ResourceTypeOrNameArgs(false, args...).
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Flatten().
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Do()
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err = r.Err()
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if err != nil {
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return err
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}
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mapping, err := r.ResourceMapping()
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if err != nil {
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return err
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}
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describer, err := f.Describer(mapping)
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if err != nil {
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return err
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}
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infos, err := r.Infos()
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if err != nil {
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if errors.IsNotFound(err) && len(args) == 2 {
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return DescribeMatchingResources(mapper, typer, describer, f, cmdNamespace, args[0], args[1], out)
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}
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return err
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}
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for _, info := range infos {
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s, err := describer.Describe(info.Namespace, info.Name)
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if err != nil {
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return err
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}
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fmt.Fprintf(out, "%s\n\n", s)
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}
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return nil
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}
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func DescribeMatchingResources(mapper meta.RESTMapper, typer runtime.ObjectTyper, describer kubectl.Describer, f *cmdutil.Factory, namespace, rsrc, prefix string, out io.Writer) error {
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r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
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NamespaceParam(namespace).DefaultNamespace().
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ResourceTypeOrNameArgs(true, rsrc).
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SingleResourceType().
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Flatten().
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Do()
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infos, err := r.Infos()
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if err != nil {
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return err
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}
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for ix := range infos {
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info := infos[ix]
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if strings.HasPrefix(info.Name, prefix) {
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s, err := describer.Describe(info.Namespace, info.Name)
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if err != nil {
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return err
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}
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fmt.Fprintf(out, "%s\n", s)
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}
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}
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return nil
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}
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