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cache.go
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cache.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2021 Tencent. All Rights Reserved.
*
* 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
*
* https://opensource.org/licenses/Apache-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 OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
*/
package meshmanager
import (
"sync"
v1 "tkestack.io/tke/api/mesh/v1"
)
type cachedMeshManager struct {
// The cached state of the meshManager
state *v1.MeshManager
}
type meshManagerCache struct {
mu sync.Mutex // protects lcMap
lcMap map[string]*cachedMeshManager
}
// ListKeys implements the interface required by DeltaFIFO to list the keys we
// already know about.
func (s *meshManagerCache) ListKeys() []string {
s.mu.Lock()
defer s.mu.Unlock()
keys := make([]string, 0, len(s.lcMap))
for k := range s.lcMap {
keys = append(keys, k)
}
return keys
}
// GetByKey returns the value stored in the lcMap under the given key
func (s *meshManagerCache) GetByKey(key string) (interface{}, bool, error) {
s.mu.Lock()
defer s.mu.Unlock()
if v, ok := s.lcMap[key]; ok {
return v, true, nil
}
return nil, false, nil
}
func (s *meshManagerCache) get(meshManagerName string) (*cachedMeshManager, bool) {
s.mu.Lock()
defer s.mu.Unlock()
meshManager, ok := s.lcMap[meshManagerName]
return meshManager, ok
}
func (s *meshManagerCache) Exist(meshManagerName string) bool {
s.mu.Lock()
defer s.mu.Unlock()
_, ok := s.lcMap[meshManagerName]
return ok
}
func (s *meshManagerCache) getOrCreate(meshManagerName string) *cachedMeshManager {
s.mu.Lock()
defer s.mu.Unlock()
collector, ok := s.lcMap[meshManagerName]
if !ok {
collector = &cachedMeshManager{}
s.lcMap[meshManagerName] = collector
}
return collector
}
func (s *meshManagerCache) set(meshManagerName string, meshManager *cachedMeshManager) {
s.mu.Lock()
defer s.mu.Unlock()
s.lcMap[meshManagerName] = meshManager
}
func (s *meshManagerCache) delete(meshManagerName string) {
s.mu.Lock()
defer s.mu.Unlock()
delete(s.lcMap, meshManagerName)
}