Files
kustomize/pkg/commands/setimagetag.go
2018-07-23 10:47:52 -07:00

112 lines
2.8 KiB
Go

/*
Copyright 2018 The Kubernetes Authors.
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 commands
import (
"errors"
"strings"
"github.com/spf13/cobra"
"github.com/kubernetes-sigs/kustomize/pkg/constants"
"github.com/kubernetes-sigs/kustomize/pkg/fs"
"github.com/kubernetes-sigs/kustomize/pkg/types"
"sort"
)
type setImageTagOptions struct {
imageTagMap map[string]string
}
// newCmdSetImageTag sets the new tags for images in the kustomization.
func newCmdSetImageTag(fsys fs.FileSystem) *cobra.Command {
var o setImageTagOptions
cmd := &cobra.Command{
Use: "imagetag",
Short: "Sets images and their new tags in the kustomization file",
Example: `
The command
set imagetag nginx:1.8.0 my-app:latest
will add
imageTags:
- name: nginx
newTag: 1.8.0
- name: my-app
newTag: latest
to the kustomization file if it doesn't exist,
and overwrite the previous newTag if the image name exists.
`,
RunE: func(cmd *cobra.Command, args []string) error {
err := o.Validate(args)
if err != nil {
return err
}
return o.RunSetImageTags(fsys)
},
}
return cmd
}
// Validate validates setImageTag command.
func (o *setImageTagOptions) Validate(args []string) error {
if len(args) == 0 {
return errors.New("No image and newTag specified.")
}
o.imageTagMap = make(map[string]string)
for _, arg := range args {
imagetag := strings.Split(arg, ":")
if len(imagetag) != 2 {
return errors.New("Invalid format of imagetag, must specify it as <image>:<newtag>")
}
o.imageTagMap[imagetag[0]] = imagetag[1]
}
return nil
}
// RunSetImageTags runs setImageTags command (does real work).
func (o *setImageTagOptions) RunSetImageTags(fsys fs.FileSystem) error {
mf, err := newKustomizationFile(constants.KustomizationFileName, fsys)
if err != nil {
return err
}
m, err := mf.read()
if err != nil {
return err
}
imageTagMap := map[string]string{}
for _, it := range m.ImageTags {
imageTagMap[it.Name] = it.NewTag
}
for key, value := range o.imageTagMap {
imageTagMap[key] = value
}
var imageTags []types.ImageTag
for key, value := range imageTagMap {
imageTags = append(imageTags, types.ImageTag{Name: key, NewTag: value})
}
sort.Slice(imageTags, func(i, j int) bool {
return imageTags[i].Name < imageTags[j].Name
})
m.ImageTags = imageTags
return mf.write(m)
}