99 lines
3.6 KiB
Go
99 lines
3.6 KiB
Go
|
/*
|
||
|
|
Copyright 2019 The Kubernetes Authors.
|
||
|
|
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
you may not use this file except in compliance with the License.
|
||
|
|
You may obtain a copy of the License at
|
||
|
|
|
||
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
Unless required by applicable law or agreed to in writing, software
|
||
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
See the License for the specific language governing permissions and
|
||
|
|
limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package runtime
|
||
|
|
|
||
|
|
import (
|
||
|
|
"sync"
|
||
|
|
|
||
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
||
|
|
)
|
||
|
|
|
||
|
|
type equivalentResourceRegistry struct {
|
||
|
|
// keyFunc computes a key for the specified resource (this allows honoring colocated resources across API groups).
|
||
|
|
// if null, or if "" is returned, resource.String() is used as the key
|
||
|
|
keyFunc func(resource schema.GroupResource) string
|
||
|
|
// resources maps key -> subresource -> equivalent resources (subresource is not included in the returned resources).
|
||
|
|
// main resources are stored with subresource="".
|
||
|
|
resources map[string]map[string][]schema.GroupVersionResource
|
||
|
|
// kinds maps resource -> subresource -> kind
|
||
|
|
kinds map[schema.GroupVersionResource]map[string]schema.GroupVersionKind
|
||
|
|
// keys caches the computed key for each GroupResource
|
||
|
|
keys map[schema.GroupResource]string
|
||
|
|
|
||
|
|
mutex sync.RWMutex
|
||
|
|
}
|
||
|
|
|
||
|
|
var _ EquivalentResourceMapper = (*equivalentResourceRegistry)(nil)
|
||
|
|
var _ EquivalentResourceRegistry = (*equivalentResourceRegistry)(nil)
|
||
|
|
|
||
|
|
// NewEquivalentResourceRegistry creates a resource registry that considers all versions of a GroupResource to be equivalent.
|
||
|
|
func NewEquivalentResourceRegistry() EquivalentResourceRegistry {
|
||
|
|
return &equivalentResourceRegistry{}
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewEquivalentResourceRegistryWithIdentity creates a resource mapper with a custom identity function.
|
||
|
|
// If "" is returned by the function, GroupResource#String is used as the identity.
|
||
|
|
// GroupResources with the same identity string are considered equivalent.
|
||
|
|
func NewEquivalentResourceRegistryWithIdentity(keyFunc func(schema.GroupResource) string) EquivalentResourceRegistry {
|
||
|
|
return &equivalentResourceRegistry{keyFunc: keyFunc}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (r *equivalentResourceRegistry) EquivalentResourcesFor(resource schema.GroupVersionResource, subresource string) []schema.GroupVersionResource {
|
||
|
|
r.mutex.RLock()
|
||
|
|
defer r.mutex.RUnlock()
|
||
|
|
return r.resources[r.keys[resource.GroupResource()]][subresource]
|
||
|
|
}
|
||
|
|
func (r *equivalentResourceRegistry) KindFor(resource schema.GroupVersionResource, subresource string) schema.GroupVersionKind {
|
||
|
|
r.mutex.RLock()
|
||
|
|
defer r.mutex.RUnlock()
|
||
|
|
return r.kinds[resource][subresource]
|
||
|
|
}
|
||
|
|
func (r *equivalentResourceRegistry) RegisterKindFor(resource schema.GroupVersionResource, subresource string, kind schema.GroupVersionKind) {
|
||
|
|
r.mutex.Lock()
|
||
|
|
defer r.mutex.Unlock()
|
||
|
|
if r.kinds == nil {
|
||
|
|
r.kinds = map[schema.GroupVersionResource]map[string]schema.GroupVersionKind{}
|
||
|
|
}
|
||
|
|
if r.kinds[resource] == nil {
|
||
|
|
r.kinds[resource] = map[string]schema.GroupVersionKind{}
|
||
|
|
}
|
||
|
|
r.kinds[resource][subresource] = kind
|
||
|
|
|
||
|
|
// get the shared key of the parent resource
|
||
|
|
key := ""
|
||
|
|
gr := resource.GroupResource()
|
||
|
|
if r.keyFunc != nil {
|
||
|
|
key = r.keyFunc(gr)
|
||
|
|
}
|
||
|
|
if key == "" {
|
||
|
|
key = gr.String()
|
||
|
|
}
|
||
|
|
|
||
|
|
if r.keys == nil {
|
||
|
|
r.keys = map[schema.GroupResource]string{}
|
||
|
|
}
|
||
|
|
r.keys[gr] = key
|
||
|
|
|
||
|
|
if r.resources == nil {
|
||
|
|
r.resources = map[string]map[string][]schema.GroupVersionResource{}
|
||
|
|
}
|
||
|
|
if r.resources[key] == nil {
|
||
|
|
r.resources[key] = map[string][]schema.GroupVersionResource{}
|
||
|
|
}
|
||
|
|
r.resources[key][subresource] = append(r.resources[key][subresource], resource)
|
||
|
|
}
|