| /* |
| * 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 baseregistry |
| |
| import ( |
| "sync" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/adapter/dubboregistry/common" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/adapter/dubboregistry/registry" |
| ) |
| |
| type FacadeRegistry interface { |
| // DoSubscribe subscribes the registry cluster to monitor the changes. |
| DoSubscribe() error |
| // DoUnsubscribe unsubscribes the registry cluster. |
| DoUnsubscribe() error |
| } |
| |
| type SvcListeners struct { |
| // listeners use url.ServiceKey as the index. |
| listeners map[string]registry.Listener |
| listenerLock sync.Mutex |
| } |
| |
| // GetListener returns existing listener or nil |
| func (s *SvcListeners) GetListener(id string) registry.Listener { |
| s.listenerLock.Lock() |
| defer s.listenerLock.Unlock() |
| listener, ok := s.listeners[id] |
| if !ok { |
| return nil |
| } |
| return listener |
| } |
| |
| // SetListener set the listener to the registry |
| func (s *SvcListeners) SetListener(id string, listener registry.Listener) { |
| s.listenerLock.Lock() |
| defer s.listenerLock.Unlock() |
| s.listeners[id] = listener |
| } |
| |
| // RemoveListener removes the listener of the registry |
| func (s *SvcListeners) RemoveListener(id string) { |
| s.listenerLock.Lock() |
| defer s.listenerLock.Unlock() |
| delete(s.listeners, id) |
| } |
| |
| func (s *SvcListeners) GetAllListener() map[string]registry.Listener { |
| s.listenerLock.Lock() |
| defer s.listenerLock.Unlock() |
| return s.listeners |
| } |
| |
| type BaseRegistry struct { |
| svcListeners *SvcListeners |
| facadeRegistry FacadeRegistry |
| AdapterListener common.RegistryEventListener |
| } |
| |
| func NewBaseRegistry(facade FacadeRegistry, adapterListener common.RegistryEventListener) *BaseRegistry { |
| return &BaseRegistry{ |
| facadeRegistry: facade, |
| svcListeners: &SvcListeners{ |
| listeners: make(map[string]registry.Listener), |
| }, |
| AdapterListener: adapterListener, |
| } |
| } |
| |
| // GetSvcListener returns existing listener or nil |
| func (r *BaseRegistry) GetSvcListener(id string) registry.Listener { |
| return r.svcListeners.GetListener(id) |
| } |
| |
| // GetAllSvcListener get all the listener of the registry |
| func (r *BaseRegistry) GetAllSvcListener() map[string]registry.Listener { |
| return r.svcListeners.GetAllListener() |
| } |
| |
| // SetSvcListener set the listener to the registry |
| func (r *BaseRegistry) SetSvcListener(id string, listener registry.Listener) { |
| r.svcListeners.SetListener(id, listener) |
| } |
| |
| // RemoveSvcListener remove the listener of the registry |
| func (r *BaseRegistry) RemoveSvcListener(id string) { |
| r.svcListeners.RemoveListener(id) |
| } |
| |
| // Subscribe monitors the target registry. |
| func (r *BaseRegistry) Subscribe() error { |
| return r.facadeRegistry.DoSubscribe() |
| } |
| |
| // Unsubscribe stops monitoring the target registry. |
| func (r *BaseRegistry) Unsubscribe() error { |
| return r.facadeRegistry.DoUnsubscribe() |
| } |