mirror of https://github.com/k3s-io/k3s
100 lines
2.6 KiB
Go
100 lines
2.6 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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"github.com/spf13/cobra"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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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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)
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const (
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patch_long = `Update field(s) of a resource using strategic merge patch
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JSON and YAML formats are accepted.`
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patch_example = `
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// Partially update a node using strategic merge patch
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kubectl patch node k8s-node-1 -p '{"spec":{"unschedulable":true}}'`
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)
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func NewCmdPatch(f *cmdutil.Factory, out io.Writer) *cobra.Command {
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cmd := &cobra.Command{
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Use: "patch RESOURCE NAME -p PATCH",
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Short: "Update field(s) of a resource by stdin.",
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Long: patch_long,
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Example: patch_example,
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Run: func(cmd *cobra.Command, args []string) {
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err := RunPatch(f, out, cmd, args)
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cmdutil.CheckCustomErr("Patch failed", err)
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},
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}
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cmd.Flags().StringP("patch", "p", "", "The patch to be appied to the resource JSON file.")
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cmd.MarkFlagRequired("patch")
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return cmd
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}
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func RunPatch(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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patch := cmdutil.GetFlagString(cmd, "patch")
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if len(patch) == 0 {
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return cmdutil.UsageError(cmd, "Must specify -p to patch")
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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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client, err := f.RESTClient(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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return err
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}
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name, namespace := infos[0].Name, infos[0].Namespace
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helper := resource.NewHelper(client, mapping)
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_, err = helper.Patch(namespace, name, api.StrategicMergePatchType, []byte(patch))
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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", name)
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return nil
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}
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