/
patch_utils.go
141 lines (118 loc) · 3.5 KB
/
patch_utils.go
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package patch
import (
"encoding/json"
"strings"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
)
const (
NullHolder = "NULL_HOLDER"
NullHolderStr = "\"NULL_HOLDER\""
)
type Patch struct {
patchType types.PatchType
patchData patchData
}
// Type implements Patch interface.
func (p *Patch) Type() types.PatchType {
return p.patchType
}
// Data implements Patch interface.
func (p *Patch) Data(obj client.Object) ([]byte, error) {
return []byte(p.String()), nil
}
func (p *Patch) String() string {
js, _ := json.Marshal(&p.patchData)
return strings.Replace(string(js), NullHolderStr, "null", -1)
}
// NewStrategicPatch returns a strategic-merge-patch type patch entity, which applies
// to build-in resource like pods, services...
func NewStrategicPatch() *Patch {
return &Patch{patchType: types.StrategicMergePatchType}
}
// NewMergePatch returns a merge-patch type patch entity, which applies to CRDs like
// tfjobs, pytorchjobs...
func NewMergePatch() *Patch {
return &Patch{patchType: types.MergePatchType}
}
// Append/Remove finalizer only works when patch type is StrategicMergePatchType.
func (p *Patch) AddFinalizer(item string) *Patch {
if p.patchType != types.StrategicMergePatchType {
return p
}
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
p.patchData.Meta.Finalizers = append(p.patchData.Meta.Finalizers, item)
return p
}
func (p *Patch) RemoveFinalizer(item string) *Patch {
if p.patchType != types.StrategicMergePatchType {
return p
}
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
p.patchData.Meta.DeletePrimitiveFinalizer = append(p.patchData.Meta.DeletePrimitiveFinalizer, item)
return p
}
// Override finalizer only works when patch type is MergePatchType.
func (p *Patch) OverrideFinalizer(items []string) *Patch {
if p.patchType != types.MergePatchType {
return p
}
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
p.patchData.Meta.Finalizers = items
return p
}
func (p *Patch) InsertLabel(key, value string) *Patch {
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
if p.patchData.Meta.Labels == nil {
p.patchData.Meta.Labels = make(map[string]string)
}
p.patchData.Meta.Labels[key] = value
return p
}
func (p *Patch) DeleteLabel(key string) *Patch {
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
if p.patchData.Meta.Labels == nil {
p.patchData.Meta.Labels = make(map[string]string)
}
p.patchData.Meta.Labels[key] = NullHolder
return p
}
func (p *Patch) InsertAnnotation(key, value string) *Patch {
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
if p.patchData.Meta.Annotations == nil {
p.patchData.Meta.Annotations = make(map[string]string)
}
p.patchData.Meta.Annotations[key] = value
return p
}
func (p *Patch) DeleteAnnotation(key string) *Patch {
if p.patchData.Meta == nil {
p.patchData.Meta = &prunedMetadata{}
}
if p.patchData.Meta.Annotations == nil {
p.patchData.Meta.Annotations = make(map[string]string)
}
p.patchData.Meta.Annotations[key] = NullHolder
return p
}
type patchData struct {
Meta *prunedMetadata `json:"metadata,omitempty"`
}
type prunedMetadata struct {
Labels map[string]string `json:"labels,omitempty"`
Annotations map[string]string `json:"annotations,omitempty"`
Finalizers []string `json:"finalizers,omitempty"`
DeletePrimitiveFinalizer []string `json:"$deleteFromPrimitiveList/finalizers,omitempty"`
}