mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
/*
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Copyright 2014 Google Inc. 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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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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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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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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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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info := infos[0]
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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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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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