mirror of https://github.com/k3s-io/k3s
114 lines
4.5 KiB
Go
114 lines
4.5 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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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 create
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import (
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"github.com/spf13/cobra"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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cmdutil "k8s.io/kubectl/pkg/cmd/util"
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"k8s.io/kubectl/pkg/generate"
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generateversioned "k8s.io/kubectl/pkg/generate/versioned"
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"k8s.io/kubectl/pkg/util/i18n"
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"k8s.io/kubectl/pkg/util/templates"
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)
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var (
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pdbLong = templates.LongDesc(i18n.T(`
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Create a pod disruption budget with the specified name, selector, and desired minimum available pods`))
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pdbExample = templates.Examples(i18n.T(`
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# Create a pod disruption budget named my-pdb that will select all pods with the app=rails label
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# and require at least one of them being available at any point in time.
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kubectl create poddisruptionbudget my-pdb --selector=app=rails --min-available=1
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# Create a pod disruption budget named my-pdb that will select all pods with the app=nginx label
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# and require at least half of the pods selected to be available at any point in time.
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kubectl create pdb my-pdb --selector=app=nginx --min-available=50%`))
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)
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// PodDisruptionBudgetOpts holds the command-line options for poddisruptionbudget sub command
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type PodDisruptionBudgetOpts struct {
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CreateSubcommandOptions *CreateSubcommandOptions
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}
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// NewCmdCreatePodDisruptionBudget is a macro command to create a new pod disruption budget.
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func NewCmdCreatePodDisruptionBudget(f cmdutil.Factory, ioStreams genericclioptions.IOStreams) *cobra.Command {
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options := &PodDisruptionBudgetOpts{
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CreateSubcommandOptions: NewCreateSubcommandOptions(ioStreams),
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}
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cmd := &cobra.Command{
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Use: "poddisruptionbudget NAME --selector=SELECTOR --min-available=N [--dry-run=server|client|none]",
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DisableFlagsInUseLine: true,
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Aliases: []string{"pdb"},
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Short: i18n.T("Create a pod disruption budget with the specified name."),
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Long: pdbLong,
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Example: pdbExample,
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Run: func(cmd *cobra.Command, args []string) {
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cmdutil.CheckErr(options.Complete(f, cmd, args))
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cmdutil.CheckErr(options.Run())
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},
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}
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options.CreateSubcommandOptions.PrintFlags.AddFlags(cmd)
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cmdutil.AddApplyAnnotationFlags(cmd)
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cmdutil.AddValidateFlags(cmd)
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cmdutil.AddGeneratorFlags(cmd, generateversioned.PodDisruptionBudgetV2GeneratorName)
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cmd.Flags().String("min-available", "", i18n.T("The minimum number or percentage of available pods this budget requires."))
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cmd.Flags().String("max-unavailable", "", i18n.T("The maximum number or percentage of unavailable pods this budget requires."))
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cmd.Flags().String("selector", "", i18n.T("A label selector to use for this budget. Only equality-based selector requirements are supported."))
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cmdutil.AddFieldManagerFlagVar(cmd, &options.CreateSubcommandOptions.FieldManager, "kubectl-create")
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return cmd
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}
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// Complete completes all the required options
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func (o *PodDisruptionBudgetOpts) Complete(f cmdutil.Factory, cmd *cobra.Command, args []string) error {
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name, err := NameFromCommandArgs(cmd, args)
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if err != nil {
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return err
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}
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var generator generate.StructuredGenerator
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switch generatorName := cmdutil.GetFlagString(cmd, "generator"); generatorName {
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case generateversioned.PodDisruptionBudgetV1GeneratorName:
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generator = &generateversioned.PodDisruptionBudgetV1Generator{
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Name: name,
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MinAvailable: cmdutil.GetFlagString(cmd, "min-available"),
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Selector: cmdutil.GetFlagString(cmd, "selector"),
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}
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case generateversioned.PodDisruptionBudgetV2GeneratorName:
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generator = &generateversioned.PodDisruptionBudgetV2Generator{
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Name: name,
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MinAvailable: cmdutil.GetFlagString(cmd, "min-available"),
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MaxUnavailable: cmdutil.GetFlagString(cmd, "max-unavailable"),
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Selector: cmdutil.GetFlagString(cmd, "selector"),
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}
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default:
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return errUnsupportedGenerator(cmd, generatorName)
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}
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return o.CreateSubcommandOptions.Complete(f, cmd, args, generator)
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}
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// Run calls the CreateSubcommandOptions.Run in PodDisruptionBudgetOpts instance
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func (o *PodDisruptionBudgetOpts) Run() error {
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return o.CreateSubcommandOptions.Run()
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}
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