| /* |
| * 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 org.apache.dubbo.admin.registry.mapping.impl; |
| |
| import org.apache.dubbo.admin.common.util.Constants; |
| import org.apache.dubbo.admin.registry.mapping.ServiceMapping; |
| import org.apache.dubbo.common.URL; |
| import org.apache.dubbo.common.utils.CollectionUtils; |
| import org.apache.dubbo.common.utils.ConcurrentHashSet; |
| import org.apache.dubbo.metadata.MappingChangedEvent; |
| import org.apache.dubbo.metadata.MappingListener; |
| import org.apache.dubbo.remoting.zookeeper.ZookeeperClient; |
| import org.apache.dubbo.remoting.zookeeper.ZookeeperTransporter; |
| import org.apache.dubbo.rpc.model.ApplicationModel; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import static org.apache.dubbo.metadata.ServiceNameMapping.getAppNames; |
| |
| |
| public class ZookeeperServiceMapping implements ServiceMapping { |
| |
| private ZookeeperClient zkClient; |
| |
| private final static String MAPPING_PATH = Constants.PATH_SEPARATOR + Constants.DEFAULT_ROOT + Constants.PATH_SEPARATOR + Constants.DEFAULT_MAPPING_GROUP; |
| |
| private final Set<MappingListener> listeners = new ConcurrentHashSet<>(); |
| |
| private final Set<String> anyServices = new ConcurrentHashSet<>(); |
| |
| @Override |
| public void init(URL url) { |
| ZookeeperTransporter zookeeperTransporter = ZookeeperTransporter.getExtension(ApplicationModel.defaultModel()); |
| zkClient = zookeeperTransporter.connect(url); |
| listenerAll(); |
| } |
| |
| @Override |
| public void listenerAll() { |
| zkClient.create(MAPPING_PATH, false); |
| List<String> services = zkClient.addChildListener(MAPPING_PATH, (path, currentChildList) -> { |
| for (String child : currentChildList) { |
| if (anyServices.add(child)) { |
| notifyMappingChangedEvent(child); |
| } |
| } |
| }); |
| if (CollectionUtils.isNotEmpty(services)) { |
| for (String service : services) { |
| if (anyServices.add(service)) { |
| notifyMappingChangedEvent(service); |
| } |
| } |
| } |
| } |
| |
| private void notifyMappingChangedEvent(String service) { |
| if (service.equals(Constants.CONFIGURATORS_CATEGORY) || service.equals(Constants.CONSUMERS_CATEGORY) |
| || service.equals(Constants.PROVIDERS_CATEGORY) || service.equals(Constants.ROUTERS_CATEGORY)) { |
| return; |
| } |
| String servicePath = MAPPING_PATH + Constants.PATH_SEPARATOR + service; |
| String content = zkClient.getContent(servicePath); |
| if (content != null) { |
| Set<String> apps = getAppNames(content); |
| MappingChangedEvent event = new MappingChangedEvent(service, apps); |
| for (MappingListener listener : listeners) { |
| listener.onEvent(event); |
| } |
| } |
| } |
| |
| @Override |
| public void addMappingListener(MappingListener listener) { |
| listeners.add(listener); |
| } |
| |
| } |