-
Notifications
You must be signed in to change notification settings - Fork 0
/
rollback.go
93 lines (74 loc) · 2.28 KB
/
rollback.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
/*
Copyright 2016 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"fmt"
"io"
"strconv"
"github.com/spf13/cobra"
"k8s.io/helm/pkg/helm"
)
const rollbackDesc = `
This command rolls back a release to the previous revision.
The argument of the rollback command is the name of a release.
`
type rollbackCmd struct {
name string
revision int32
dryRun bool
disableHooks bool
out io.Writer
client helm.Interface
}
func newRollbackCmd(c helm.Interface, out io.Writer) *cobra.Command {
rollback := &rollbackCmd{
out: out,
client: c,
}
cmd := &cobra.Command{
Use: "rollback [RELEASE]",
Short: "roll back a release to a previous revision",
Long: rollbackDesc,
PersistentPreRunE: setupConnection,
RunE: func(cmd *cobra.Command, args []string) error {
if err := checkArgsLength(len(args), "release name", "revision number"); err != nil {
return err
}
rollback.name = args[0]
v64, err := strconv.ParseInt(args[1], 10, 32)
if err != nil {
return fmt.Errorf("invalid revision number '%q': %s", args[1], err)
}
rollback.revision = int32(v64)
rollback.client = ensureHelmClient(rollback.client)
return rollback.run()
},
}
f := cmd.Flags()
f.BoolVar(&rollback.dryRun, "dry-run", false, "simulate a rollback")
f.BoolVar(&rollback.disableHooks, "no-hooks", false, "prevent hooks from running during rollback")
return cmd
}
func (r *rollbackCmd) run() error {
_, err := r.client.RollbackRelease(
r.name,
helm.RollbackDryRun(r.dryRun),
helm.RollbackDisableHooks(r.disableHooks),
helm.RollbackVersion(r.revision),
)
if err != nil {
return prettyError(err)
}
fmt.Fprintf(r.out, "Rollback was a success! Happy Helming!\n")
return nil
}