Files
kustomize/plugin/builtin/PrefixSuffixTransformer.go
2019-06-11 19:37:06 -07:00

101 lines
2.5 KiB
Go

// Code generated by pluginator on PrefixSuffixTransformer; DO NOT EDIT.
package builtin
import (
"errors"
"fmt"
"sigs.k8s.io/kustomize/pkg/gvk"
"sigs.k8s.io/kustomize/pkg/ifc"
"sigs.k8s.io/kustomize/pkg/resmap"
"sigs.k8s.io/kustomize/pkg/transformers"
"sigs.k8s.io/kustomize/pkg/transformers/config"
"sigs.k8s.io/yaml"
)
// Add the given prefix and suffix to the field.
type PrefixSuffixTransformerPlugin struct {
Prefix string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
Suffix string `json:"suffix,omitempty" yaml:"suffix,omitempty"`
FieldSpecs []config.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
}
func NewPrefixSuffixTransformerPlugin() *PrefixSuffixTransformerPlugin {
return &PrefixSuffixTransformerPlugin{}
}
// Not placed in a file yet due to lack of demand.
var prefixSuffixFieldSpecsToSkip = []config.FieldSpec{
{
Gvk: gvk.Gvk{Kind: "CustomResourceDefinition"},
},
}
func (p *PrefixSuffixTransformerPlugin) Config(
ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
p.Prefix = ""
p.Suffix = ""
p.FieldSpecs = nil
err = yaml.Unmarshal(c, p)
if err != nil {
return
}
if p.FieldSpecs == nil {
return errors.New("fieldSpecs is not expected to be nil")
}
return
}
func (p *PrefixSuffixTransformerPlugin) Transform(m resmap.ResMap) error {
if len(p.Prefix) == 0 && len(p.Suffix) == 0 {
return nil
}
// Fill map "mf" with entries subject to name modification, and
// delete these entries from "m", so that for now m retains only
// the entries whose names will not be modified.
mf := resmap.New()
for id, r := range m.AsMap() {
found := false
for _, path := range prefixSuffixFieldSpecsToSkip {
if id.Gvk().IsSelected(&path.Gvk) {
found = true
break
}
}
if !found {
mf.AppendWithId(id, r)
m.Remove(id)
}
}
for id, r := range mf.AsMap() {
objMap := r.Map()
for _, path := range p.FieldSpecs {
if !id.Gvk().IsSelected(&path.Gvk) {
continue
}
err := transformers.MutateField(
objMap,
path.PathSlice(),
path.CreateIfNotPresent,
p.addPrefixSuffix)
if err != nil {
return err
}
newId := id.CopyWithNewPrefixSuffix(p.Prefix, p.Suffix)
m.AppendWithId(newId, r)
}
}
return nil
}
func (p *PrefixSuffixTransformerPlugin) addPrefixSuffix(
in interface{}) (interface{}, error) {
s, ok := in.(string)
if !ok {
return nil, fmt.Errorf("%#v is expected to be %T", in, s)
}
return fmt.Sprintf("%s%s%s", p.Prefix, s, p.Suffix), nil
}