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Fix zookeeper and nacos issues working as registry, metadata and conf…
…igcenter (#2369)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /* | ||
| * 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 zookeeper | ||
|
|
||
| import ( | ||
| "strings" | ||
| "sync" | ||
| ) | ||
|
|
||
| import ( | ||
| gxset "github.com/dubbogo/gost/container/set" | ||
| "github.com/dubbogo/gost/log/logger" | ||
| ) | ||
|
|
||
| import ( | ||
| "dubbo.apache.org/dubbo-go/v3/common/constant" | ||
| "dubbo.apache.org/dubbo-go/v3/registry" | ||
| "dubbo.apache.org/dubbo-go/v3/remoting" | ||
| "dubbo.apache.org/dubbo-go/v3/remoting/zookeeper" | ||
| ) | ||
|
|
||
| // CacheListener defines keyListeners and rootPath | ||
| type CacheListener struct { | ||
| // key is zkNode Path and value is set of listeners | ||
| keyListeners sync.Map | ||
| zkEventListener *zookeeper.ZkEventListener | ||
| rootPath string | ||
| } | ||
|
|
||
| // NewCacheListener creates a new CacheListener | ||
| func NewCacheListener(rootPath string, listener *zookeeper.ZkEventListener) *CacheListener { | ||
| return &CacheListener{zkEventListener: listener, rootPath: rootPath} | ||
| } | ||
|
|
||
| // AddListener will add a listener if loaded | ||
| func (l *CacheListener) AddListener(key string, listener registry.MappingListener) { | ||
| // FIXME do not use Client.ExistW, cause it has a bug(can not watch zk node that do not exist) | ||
| _, _, _, err := l.zkEventListener.Client.Conn.ExistsW(key) | ||
| // reference from https://stackoverflow.com/questions/34018908/golang-why-dont-we-have-a-set-datastructure | ||
| // make a map[your type]struct{} like set in java | ||
| if err != nil { | ||
| return | ||
| } | ||
| listeners, loaded := l.keyListeners.LoadOrStore(key, map[registry.MappingListener]struct{}{listener: {}}) | ||
| if loaded { | ||
| listeners.(map[registry.MappingListener]struct{})[listener] = struct{}{} | ||
| l.keyListeners.Store(key, listeners) | ||
| } | ||
| } | ||
|
|
||
| // RemoveListener will delete a listener if loaded | ||
| func (l *CacheListener) RemoveListener(key string, listener registry.MappingListener) { | ||
| listeners, loaded := l.keyListeners.Load(key) | ||
| if loaded { | ||
| delete(listeners.(map[registry.MappingListener]struct{}), listener) | ||
| } | ||
| } | ||
|
|
||
| // DataChange changes all listeners' event | ||
| func (l *CacheListener) DataChange(event remoting.Event) bool { | ||
| if listeners, ok := l.keyListeners.Load(event.Path); ok { | ||
| for listener := range listeners.(map[registry.MappingListener]struct{}) { | ||
| appNames := strings.Split(event.Content, constant.CommaSeparator) | ||
| set := gxset.NewSet() | ||
| for _, e := range appNames { | ||
| set.Add(e) | ||
| } | ||
| err := listener.OnEvent(registry.NewServiceMappingChangedEvent(l.pathToKey(event.Path), set)) | ||
| if err != nil { | ||
| logger.Error("Error notify mapping change event.", err) | ||
| return false | ||
| } | ||
| } | ||
| return true | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| func (l *CacheListener) pathToKey(path string) string { | ||
| if len(path) == 0 { | ||
| return path | ||
| } | ||
| groupKey := strings.Replace(strings.Replace(path, l.rootPath+constant.PathSeparator, "", -1), constant.PathSeparator, constant.DotSeparator, -1) | ||
| return groupKey[strings.Index(groupKey, constant.DotSeparator)+1:] | ||
| } |
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