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package interceptor
import (
"context"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/watch"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// Funcs contains functions that are called instead of the underlying client's methods.
type Funcs struct {
Get func(ctx context.Context, client client.WithWatch, key client.ObjectKey, obj client.Object, opts ...client.GetOption) error
List func(ctx context.Context, client client.WithWatch, list client.ObjectList, opts ...client.ListOption) error
Create func(ctx context.Context, client client.WithWatch, obj client.Object, opts ...client.CreateOption) error
Delete func(ctx context.Context, client client.WithWatch, obj client.Object, opts ...client.DeleteOption) error
DeleteAllOf func(ctx context.Context, client client.WithWatch, obj client.Object, opts ...client.DeleteAllOfOption) error
Update func(ctx context.Context, client client.WithWatch, obj client.Object, opts ...client.UpdateOption) error
Patch func(ctx context.Context, client client.WithWatch, obj client.Object, patch client.Patch, opts ...client.PatchOption) error
Watch func(ctx context.Context, client client.WithWatch, obj client.ObjectList, opts ...client.ListOption) (watch.Interface, error)
SubResource func(client client.WithWatch, subResource string) client.SubResourceClient
SubResourceGet func(ctx context.Context, client client.Client, subResourceName string, obj client.Object, subResource client.Object, opts ...client.SubResourceGetOption) error
SubResourceCreate func(ctx context.Context, client client.Client, subResourceName string, obj client.Object, subResource client.Object, opts ...client.SubResourceCreateOption) error
SubResourceUpdate func(ctx context.Context, client client.Client, subResourceName string, obj client.Object, opts ...client.SubResourceUpdateOption) error
SubResourcePatch func(ctx context.Context, client client.Client, subResourceName string, obj client.Object, patch client.Patch, opts ...client.SubResourcePatchOption) error
}
// NewClient returns a new interceptor client that calls the functions in funcs instead of the underlying client's methods, if they are not nil.
func NewClient(interceptedClient client.WithWatch, funcs Funcs) client.WithWatch {
return interceptor{
client: interceptedClient,
funcs: funcs,
}
}
type interceptor struct {
client client.WithWatch
funcs Funcs
}
var _ client.WithWatch = &interceptor{}
func (c interceptor) GroupVersionKindFor(obj runtime.Object) (schema.GroupVersionKind, error) {
return c.client.GroupVersionKindFor(obj)
}
func (c interceptor) IsObjectNamespaced(obj runtime.Object) (bool, error) {
return c.client.IsObjectNamespaced(obj)
}
func (c interceptor) Get(ctx context.Context, key client.ObjectKey, obj client.Object, opts ...client.GetOption) error {
if c.funcs.Get != nil {
return c.funcs.Get(ctx, c.client, key, obj, opts...)
}
return c.client.Get(ctx, key, obj, opts...)
}
func (c interceptor) List(ctx context.Context, list client.ObjectList, opts ...client.ListOption) error {
if c.funcs.List != nil {
return c.funcs.List(ctx, c.client, list, opts...)
}
return c.client.List(ctx, list, opts...)
}
func (c interceptor) Create(ctx context.Context, obj client.Object, opts ...client.CreateOption) error {
if c.funcs.Create != nil {
return c.funcs.Create(ctx, c.client, obj, opts...)
}
return c.client.Create(ctx, obj, opts...)
}
func (c interceptor) Delete(ctx context.Context, obj client.Object, opts ...client.DeleteOption) error {
if c.funcs.Delete != nil {
return c.funcs.Delete(ctx, c.client, obj, opts...)
}
return c.client.Delete(ctx, obj, opts...)
}
func (c interceptor) Update(ctx context.Context, obj client.Object, opts ...client.UpdateOption) error {
if c.funcs.Update != nil {
return c.funcs.Update(ctx, c.client, obj, opts...)
}
return c.client.Update(ctx, obj, opts...)
}
func (c interceptor) Patch(ctx context.Context, obj client.Object, patch client.Patch, opts ...client.PatchOption) error {
if c.funcs.Patch != nil {
return c.funcs.Patch(ctx, c.client, obj, patch, opts...)
}
return c.client.Patch(ctx, obj, patch, opts...)
}
func (c interceptor) DeleteAllOf(ctx context.Context, obj client.Object, opts ...client.DeleteAllOfOption) error {
if c.funcs.DeleteAllOf != nil {
return c.funcs.DeleteAllOf(ctx, c.client, obj, opts...)
}
return c.client.DeleteAllOf(ctx, obj, opts...)
}
func (c interceptor) Status() client.SubResourceWriter {
return c.SubResource("status")
}
func (c interceptor) SubResource(subResource string) client.SubResourceClient {
if c.funcs.SubResource != nil {
return c.funcs.SubResource(c.client, subResource)
}
return subResourceInterceptor{
subResourceName: subResource,
client: c.client,
funcs: c.funcs,
}
}
func (c interceptor) Scheme() *runtime.Scheme {
return c.client.Scheme()
}
func (c interceptor) RESTMapper() meta.RESTMapper {
return c.client.RESTMapper()
}
func (c interceptor) Watch(ctx context.Context, obj client.ObjectList, opts ...client.ListOption) (watch.Interface, error) {
if c.funcs.Watch != nil {
return c.funcs.Watch(ctx, c.client, obj, opts...)
}
return c.client.Watch(ctx, obj, opts...)
}
type subResourceInterceptor struct {
subResourceName string
client client.Client
funcs Funcs
}
var _ client.SubResourceClient = &subResourceInterceptor{}
func (s subResourceInterceptor) Get(ctx context.Context, obj client.Object, subResource client.Object, opts ...client.SubResourceGetOption) error {
if s.funcs.SubResourceGet != nil {
return s.funcs.SubResourceGet(ctx, s.client, s.subResourceName, obj, subResource, opts...)
}
return s.client.SubResource(s.subResourceName).Get(ctx, obj, subResource, opts...)
}
func (s subResourceInterceptor) Create(ctx context.Context, obj client.Object, subResource client.Object, opts ...client.SubResourceCreateOption) error {
if s.funcs.SubResourceCreate != nil {
return s.funcs.SubResourceCreate(ctx, s.client, s.subResourceName, obj, subResource, opts...)
}
return s.client.SubResource(s.subResourceName).Create(ctx, obj, subResource, opts...)
}
func (s subResourceInterceptor) Update(ctx context.Context, obj client.Object, opts ...client.SubResourceUpdateOption) error {
if s.funcs.SubResourceUpdate != nil {
return s.funcs.SubResourceUpdate(ctx, s.client, s.subResourceName, obj, opts...)
}
return s.client.SubResource(s.subResourceName).Update(ctx, obj, opts...)
}
func (s subResourceInterceptor) Patch(ctx context.Context, obj client.Object, patch client.Patch, opts ...client.SubResourcePatchOption) error {
if s.funcs.SubResourcePatch != nil {
return s.funcs.SubResourcePatch(ctx, s.client, s.subResourceName, obj, patch, opts...)
}
return s.client.SubResource(s.subResourceName).Patch(ctx, obj, patch, opts...)
}
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