/* * 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 com.alibaba.dubbo.registry.nacos.util; import org.apache.dubbo.common.utils.CollectionUtils; import com.alibaba.nacos.api.naming.pojo.Instance; import com.google.common.collect.Lists; import com.google.common.collect.Maps; import java.util.List; import java.util.Map; import java.util.Set; /** * Instance manage util for multiple serviceNames * To resolve bug with https://github.com/apache/dubbo/issues/5885 and https://github.com/apache/dubbo/issues/5899 * * @author laddcn * @since 2.7.6 */ public class NacosInstanceManageUtil { /** * serviceName -> refreshed instance list */ private static final Map<String, List<Instance>> SERVICE_INSTANCE_LIST_MAP = Maps.newConcurrentMap(); /** * serviceName -> corresponding serviceName list */ private static final Map<String, Set<String>> CORRESPONDING_SERVICE_NAMES_MAP = Maps.newConcurrentMap(); public static void setCorrespondingServiceNames(String serviceName, Set<String> serviceNames) { CORRESPONDING_SERVICE_NAMES_MAP.put(serviceName, serviceNames); } public static void initOrRefreshServiceInstanceList(String serviceName, List<Instance> instanceList) { SERVICE_INSTANCE_LIST_MAP.put(serviceName, instanceList); } public static List<Instance> getAllCorrespondingServiceInstanceList(String serviceName) { if (!CORRESPONDING_SERVICE_NAMES_MAP.containsKey(serviceName)) { return Lists.newArrayList(); } List<Instance> allInstances = Lists.newArrayList(); for (String correspondingServiceName : CORRESPONDING_SERVICE_NAMES_MAP.get(serviceName)) { if (SERVICE_INSTANCE_LIST_MAP.containsKey(correspondingServiceName) && CollectionUtils.isNotEmpty(SERVICE_INSTANCE_LIST_MAP.get(correspondingServiceName))) { allInstances.addAll(SERVICE_INSTANCE_LIST_MAP.get(correspondingServiceName)); } } return allInstances; } }