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105 lines
3.0 KiB
105 lines
3.0 KiB
/*
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Copyright 2016 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 main
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import (
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"fmt"
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"io"
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"strconv"
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"github.com/spf13/cobra"
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"k8s.io/helm/pkg/helm"
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)
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const rollbackDesc = `
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This command rolls back a release to a previous revision.
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The first argument of the rollback command is the name of a release, and the
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second is a revision (version) number. To see revision numbers, run
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'helm history RELEASE'.
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`
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type rollbackCmd struct {
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name string
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revision int32
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dryRun bool
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recreate bool
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disableHooks bool
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out io.Writer
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client helm.Interface
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timeout int64
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wait bool
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}
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func newRollbackCmd(c helm.Interface, out io.Writer) *cobra.Command {
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rollback := &rollbackCmd{
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out: out,
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client: c,
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}
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cmd := &cobra.Command{
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Use: "rollback [flags] [RELEASE] [REVISION]",
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Short: "roll back a release to a previous revision",
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Long: rollbackDesc,
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PersistentPreRunE: setupConnection,
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RunE: func(cmd *cobra.Command, args []string) error {
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if err := checkArgsLength(len(args), "release name", "revision number"); err != nil {
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return err
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}
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rollback.name = args[0]
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v64, err := strconv.ParseInt(args[1], 10, 32)
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if err != nil {
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return fmt.Errorf("invalid revision number '%q': %s", args[1], err)
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}
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rollback.revision = int32(v64)
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rollback.client = ensureHelmClient(rollback.client)
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return rollback.run()
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},
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}
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f := cmd.Flags()
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f.BoolVar(&rollback.dryRun, "dry-run", false, "simulate a rollback")
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f.BoolVar(&rollback.recreate, "recreate-pods", false, "performs pods restart for the resource if applicable")
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f.BoolVar(&rollback.disableHooks, "no-hooks", false, "prevent hooks from running during rollback")
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f.Int64Var(&rollback.timeout, "timeout", 300, "time in seconds to wait for any individual kubernetes operation (like Jobs for hooks)")
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f.BoolVar(&rollback.wait, "wait", false, "if set, will wait until all Pods, PVCs, and Services are in a ready state before marking the release as successful. It will wait for as long as --timeout")
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return cmd
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}
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func (r *rollbackCmd) run() error {
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_, err := r.client.RollbackRelease(
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r.name,
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helm.RollbackDryRun(r.dryRun),
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helm.RollbackRecreate(r.recreate),
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helm.RollbackDisableHooks(r.disableHooks),
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helm.RollbackVersion(r.revision),
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helm.RollbackTimeout(r.timeout),
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helm.RollbackWait(r.wait))
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if err != nil {
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return prettyError(err)
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}
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fmt.Fprintf(r.out, "Rollback was a success! Happy Helming!\n")
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return nil
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}
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