diff options
Diffstat (limited to 'vendor/k8s.io/client-go/tools/cache/undelta_store.go')
-rw-r--r-- | vendor/k8s.io/client-go/tools/cache/undelta_store.go | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/vendor/k8s.io/client-go/tools/cache/undelta_store.go b/vendor/k8s.io/client-go/tools/cache/undelta_store.go deleted file mode 100644 index 117df46c4..000000000 --- a/vendor/k8s.io/client-go/tools/cache/undelta_store.go +++ /dev/null @@ -1,83 +0,0 @@ -/* -Copyright 2015 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 cache - -// UndeltaStore listens to incremental updates and sends complete state on every change. -// It implements the Store interface so that it can receive a stream of mirrored objects -// from Reflector. Whenever it receives any complete (Store.Replace) or incremental change -// (Store.Add, Store.Update, Store.Delete), it sends the complete state by calling PushFunc. -// It is thread-safe. It guarantees that every change (Add, Update, Replace, Delete) results -// in one call to PushFunc, but sometimes PushFunc may be called twice with the same values. -// PushFunc should be thread safe. -type UndeltaStore struct { - Store - PushFunc func([]interface{}) -} - -// Assert that it implements the Store interface. -var _ Store = &UndeltaStore{} - -// Note about thread safety. The Store implementation (cache.cache) uses a lock for all methods. -// In the functions below, the lock gets released and reacquired betweend the {Add,Delete,etc} -// and the List. So, the following can happen, resulting in two identical calls to PushFunc. -// time thread 1 thread 2 -// 0 UndeltaStore.Add(a) -// 1 UndeltaStore.Add(b) -// 2 Store.Add(a) -// 3 Store.Add(b) -// 4 Store.List() -> [a,b] -// 5 Store.List() -> [a,b] - -func (u *UndeltaStore) Add(obj interface{}) error { - if err := u.Store.Add(obj); err != nil { - return err - } - u.PushFunc(u.Store.List()) - return nil -} - -func (u *UndeltaStore) Update(obj interface{}) error { - if err := u.Store.Update(obj); err != nil { - return err - } - u.PushFunc(u.Store.List()) - return nil -} - -func (u *UndeltaStore) Delete(obj interface{}) error { - if err := u.Store.Delete(obj); err != nil { - return err - } - u.PushFunc(u.Store.List()) - return nil -} - -func (u *UndeltaStore) Replace(list []interface{}, resourceVersion string) error { - if err := u.Store.Replace(list, resourceVersion); err != nil { - return err - } - u.PushFunc(u.Store.List()) - return nil -} - -// NewUndeltaStore returns an UndeltaStore implemented with a Store. -func NewUndeltaStore(pushFunc func([]interface{}), keyFunc KeyFunc) *UndeltaStore { - return &UndeltaStore{ - Store: NewStore(keyFunc), - PushFunc: pushFunc, - } -} |