| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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 discovery |
| |
| import ( |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/util" |
| "github.com/apache/servicecomb-service-center/server/core/proto" |
| ) |
| |
| type CommonCacher struct { |
| Cfg *Config |
| // cache for indexer |
| cache Cache |
| |
| ready chan struct{} |
| } |
| |
| func (c *CommonCacher) Cache() Cache { |
| return c.cache |
| } |
| |
| func (c *CommonCacher) Notify(action proto.EventType, key string, kv *KeyValue) { |
| switch action { |
| case proto.EVT_DELETE: |
| c.cache.Remove(key) |
| default: |
| c.cache.Put(key, kv) |
| } |
| c.OnEvent(KvEvent{Type: action, KV: kv}) |
| } |
| |
| func (c *CommonCacher) OnEvent(evt KvEvent) { |
| if c.Cfg.OnEvent == nil { |
| return |
| } |
| |
| defer log.Recover() |
| c.Cfg.OnEvent(evt) |
| } |
| |
| func (c *CommonCacher) Run() { |
| util.SafeCloseChan(c.ready) |
| } |
| |
| func (c *CommonCacher) Stop() { |
| } |
| |
| func (c *CommonCacher) Ready() <-chan struct{} { |
| return c.ready |
| } |
| |
| func NewCommonCacher(cfg *Config, cache Cache) *CommonCacher { |
| return &CommonCacher{ |
| Cfg: cfg, |
| cache: cache, |
| ready: make(chan struct{}), |
| } |
| } |