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addtransformer.go
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/
addtransformer.go
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// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package add
import (
"errors"
"log"
"slices"
"github.com/spf13/cobra"
"sigs.k8s.io/kustomize/kustomize/v5/commands/internal/kustfile"
"sigs.k8s.io/kustomize/kustomize/v5/commands/internal/util"
"sigs.k8s.io/kustomize/kyaml/filesys"
)
type addTransformerOptions struct {
transformerFilePaths []string
}
// newCmdAddTransformer adds the name of a file containing a transformer
// configuration to the kustomization file.
func newCmdAddTransformer(fSys filesys.FileSystem) *cobra.Command {
var o addTransformerOptions
cmd := &cobra.Command{
Use: "transformer",
Short: "Add the name of a file containing a transformer configuration to the kustomization file",
Example: `
add transformer {filepath}`,
RunE: func(cmd *cobra.Command, args []string) error {
err := o.Validate(fSys, args)
if err != nil {
return err
}
return o.RunAddTransformer(fSys)
},
}
return cmd
}
// Validate validates add transformer command.
func (o *addTransformerOptions) Validate(fSys filesys.FileSystem, args []string) error {
// TODO: Add validation for the format of the transformer.
if len(args) == 0 {
return errors.New("must specify a yaml file which contains a transformer plugin resource")
}
var err error
o.transformerFilePaths, err = util.GlobPatterns(fSys, args)
return err
}
// RunAddTransformer runs add transformer command (do real work).
func (o *addTransformerOptions) RunAddTransformer(fSys filesys.FileSystem) error {
if len(o.transformerFilePaths) == 0 {
return nil
}
mf, err := kustfile.NewKustomizationFile(fSys)
if err != nil {
return err
}
m, err := mf.Read()
if err != nil {
return err
}
for _, t := range o.transformerFilePaths {
if slices.Contains(m.Transformers, t) {
log.Printf("transformer %s already in kustomization file", t)
continue
}
m.Transformers = append(m.Transformers, t)
}
return mf.Write(m)
}