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- /*
- Copyright 2017 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 build
- import (
- "io"
- "github.com/pkg/errors"
- "github.com/spf13/cobra"
- "sigs.k8s.io/kustomize/pkg/constants"
- "sigs.k8s.io/kustomize/pkg/fs"
- "sigs.k8s.io/kustomize/pkg/ifc/transformer"
- "sigs.k8s.io/kustomize/pkg/loader"
- "sigs.k8s.io/kustomize/pkg/resmap"
- "sigs.k8s.io/kustomize/pkg/target"
- )
- // Options contain the options for running a build
- type Options struct {
- kustomizationPath string
- outputPath string
- }
- // NewOptions creates a Options object
- func NewOptions(p, o string) *Options {
- return &Options{
- kustomizationPath: p,
- outputPath: o,
- }
- }
- var examples = `
- Use the file somedir/kustomization.yaml to generate a set of api resources:
- build somedir
- Use a url pointing to a remote directory/kustomization.yaml to generate a set of api resources:
- build url
- The url should follow hashicorp/go-getter URL format described in
- https://github.com/hashicorp/go-getter#url-format
- url examples:
- sigs.k8s.io/kustomize//examples/multibases?ref=v1.0.6
- github.com/Liujingfang1/mysql
- github.com/Liujingfang1/kustomize//examples/helloWorld?ref=repoUrl2
- `
- // NewCmdBuild creates a new build command.
- func NewCmdBuild(
- out io.Writer, fs fs.FileSystem,
- rf *resmap.Factory,
- ptf transformer.Factory) *cobra.Command {
- var o Options
- cmd := &cobra.Command{
- Use: "build [path]",
- Short: "Print current configuration per contents of " + constants.KustomizationFileNames[0],
- Example: examples,
- SilenceUsage: true,
- RunE: func(cmd *cobra.Command, args []string) error {
- err := o.Validate(args)
- if err != nil {
- return err
- }
- return o.RunBuild(out, fs, rf, ptf)
- },
- }
- cmd.Flags().StringVarP(
- &o.outputPath,
- "output", "o", "",
- "If specified, write the build output to this path.")
- return cmd
- }
- // Validate validates build command.
- func (o *Options) Validate(args []string) error {
- if len(args) > 1 {
- return errors.New("specify one path to " + constants.KustomizationFileNames[0])
- }
- if len(args) == 0 {
- o.kustomizationPath = "./"
- } else {
- o.kustomizationPath = args[0]
- }
- return nil
- }
- // RunBuild runs build command.
- func (o *Options) RunBuild(
- out io.Writer, fSys fs.FileSystem,
- rf *resmap.Factory, ptf transformer.Factory) error {
- ldr, err := loader.NewLoader(o.kustomizationPath, fSys)
- if err != nil {
- return err
- }
- defer ldr.Cleanup()
- kt, err := target.NewKustTarget(ldr, rf, ptf)
- if err != nil {
- return err
- }
- allResources, err := kt.MakeCustomizedResMap()
- if err != nil {
- return err
- }
- // Output the objects.
- res, err := allResources.EncodeAsYaml()
- if err != nil {
- return err
- }
- if o.outputPath != "" {
- return fSys.WriteFile(o.outputPath, res)
- }
- _, err = out.Write(res)
- return err
- }
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