| /* |
| * 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.rpc.cluster.router.mesh.util; |
| |
| import org.apache.dubbo.common.logger.ErrorTypeAwareLogger; |
| import org.apache.dubbo.common.logger.LoggerFactory; |
| import org.apache.dubbo.common.utils.CollectionUtils; |
| import org.apache.dubbo.common.utils.ConcurrentHashSet; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import static org.apache.dubbo.common.constants.LoggerCodeConstants.CLUSTER_NO_RULE_LISTENER; |
| |
| |
| public class MeshRuleDispatcher { |
| private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(MeshRuleDispatcher.class); |
| |
| private final String appName; |
| private final Map<String, Set<MeshRuleListener>> listenerMap = new ConcurrentHashMap<>(); |
| |
| public MeshRuleDispatcher(String appName) { |
| this.appName = appName; |
| } |
| |
| public synchronized void post(Map<String, List<Map<String, Object>>> ruleMap) { |
| if (ruleMap.isEmpty()) { |
| // clear rule |
| for (Map.Entry<String, Set<MeshRuleListener>> entry : listenerMap.entrySet()) { |
| for (MeshRuleListener listener : entry.getValue()) { |
| listener.clearRule(appName); |
| } |
| } |
| } else { |
| for (Map.Entry<String, List<Map<String, Object>>> entry : ruleMap.entrySet()) { |
| String ruleType = entry.getKey(); |
| Set<MeshRuleListener> listeners = listenerMap.get(ruleType); |
| if (CollectionUtils.isNotEmpty(listeners)) { |
| for (MeshRuleListener listener : listeners) { |
| listener.onRuleChange(appName, entry.getValue()); |
| } |
| } else { |
| logger.warn(CLUSTER_NO_RULE_LISTENER,"Receive mesh rule but none of listener has been registered","","Receive rule but none of listener has been registered. Maybe type not matched. Rule Type: " + ruleType); |
| } |
| } |
| // clear rule listener not being notified in this time |
| for (Map.Entry<String, Set<MeshRuleListener>> entry : listenerMap.entrySet()) { |
| if (!ruleMap.containsKey(entry.getKey())) { |
| for (MeshRuleListener listener : entry.getValue()) { |
| listener.clearRule(appName); |
| } |
| } |
| } |
| } |
| } |
| |
| public synchronized void register(MeshRuleListener listener) { |
| if (listener == null) { |
| return; |
| } |
| listenerMap.computeIfAbsent(listener.ruleSuffix(), (k) -> new ConcurrentHashSet<>()) |
| .add(listener); |
| } |
| |
| public synchronized void unregister(MeshRuleListener listener) { |
| if (listener == null) { |
| return; |
| } |
| Set<MeshRuleListener> listeners = listenerMap.get(listener.ruleSuffix()); |
| if (CollectionUtils.isNotEmpty(listeners)) { |
| listeners.remove(listener); |
| } |
| if (CollectionUtils.isEmpty(listeners)) { |
| listenerMap.remove(listener.ruleSuffix()); |
| } |
| } |
| |
| public boolean isEmpty() { |
| return listenerMap.isEmpty(); |
| } |
| |
| /** |
| * For ut only |
| */ |
| @Deprecated |
| public Map<String, Set<MeshRuleListener>> getListenerMap() { |
| return listenerMap; |
| } |
| } |