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// Copyright 2021 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
//go:generate pluginator
package main
import (
"fmt"
"reflect"
"sigs.k8s.io/kustomize/api/filters/replacement"
"sigs.k8s.io/kustomize/api/resmap"
"sigs.k8s.io/kustomize/api/types"
"sigs.k8s.io/yaml"
)
// Replace values in targets with values from a source
type plugin struct {
ReplacementList []types.ReplacementField `json:"replacements,omitempty" yaml:"replacements,omitempty"`
Replacements []types.Replacement `json:"omitempty" yaml:"omitempty"`
}
var KustomizePlugin plugin //nolint:gochecknoglobals
func (p *plugin) Config(
h *resmap.PluginHelpers, c []byte) (err error) {
p.ReplacementList = []types.ReplacementField{}
if err := yaml.Unmarshal(c, p); err != nil {
return err
}
for _, r := range p.ReplacementList {
if r.Path != "" && (r.Source != nil || len(r.Targets) != 0) {
return fmt.Errorf("cannot specify both path and inline replacement")
}
if r.Path != "" {
// load the replacement from the path
content, err := h.Loader().Load(r.Path)
if err != nil {
return err
}
// find if the path contains a a list of replacements or a single replacement
var replacement interface{}
err = yaml.Unmarshal(content, &replacement)
if err != nil {
return err
}
items := reflect.ValueOf(replacement)
switch items.Kind() {
case reflect.Slice:
repl := []types.Replacement{}
if err := yaml.Unmarshal(content, &repl); err != nil {
return err
}
p.Replacements = append(p.Replacements, repl...)
case reflect.Map:
repl := types.Replacement{}
if err := yaml.Unmarshal(content, &repl); err != nil {
return err
}
p.Replacements = append(p.Replacements, repl)
default:
return fmt.Errorf("unsupported replacement type encountered within replacement path: %v", items.Kind())
}
} else {
// replacement information is already loaded
p.Replacements = append(p.Replacements, r.Replacement)
}
}
return nil
}
func (p *plugin) Transform(m resmap.ResMap) (err error) {
return m.ApplyFilter(replacement.Filter{
Replacements: p.Replacements,
})
}
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