| /* |
| * 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; |
| |
| import org.apache.dubbo.admin.common.util.Constants; |
| import org.apache.dubbo.admin.service.impl.InstanceRegistryCache; |
| import org.apache.dubbo.common.URL; |
| import org.apache.dubbo.common.utils.CollectionUtils; |
| import org.apache.dubbo.common.utils.NetUtils; |
| import org.apache.dubbo.metadata.MappingChangedEvent; |
| import org.apache.dubbo.metadata.MappingListener; |
| import org.apache.dubbo.registry.client.InstanceAddressURL; |
| import org.apache.dubbo.registry.client.ServiceDiscovery; |
| import org.apache.dubbo.registry.client.ServiceInstance; |
| import org.apache.dubbo.registry.client.event.ServiceInstancesChangedEvent; |
| import org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener; |
| |
| import com.google.common.collect.Sets; |
| import org.springframework.stereotype.Component; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.stream.Collectors; |
| |
| @Component |
| public class AdminMappingListener implements MappingListener { |
| |
| private static final URL CONSUMER_URL = new URL(Constants.ADMIN_PROTOCOL, NetUtils.getLocalHost(), 0, "", |
| Constants.INTERFACE_KEY, Constants.ANY_VALUE, |
| Constants.GROUP_KEY, Constants.ANY_VALUE, |
| Constants.VERSION_KEY, Constants.ANY_VALUE, |
| Constants.CLASSIFIER_KEY, Constants.ANY_VALUE, |
| Constants.CATEGORY_KEY, Constants.PROVIDERS_CATEGORY + "," |
| + Constants.CONSUMERS_CATEGORY + "," |
| + Constants.ROUTERS_CATEGORY + "," |
| + Constants.CONFIGURATORS_CATEGORY, |
| Constants.ENABLED_KEY, Constants.ANY_VALUE, |
| Constants.CHECK_KEY, String.valueOf(false)); |
| |
| /* app - listener */ |
| private final Map<String, ServiceInstancesChangedListener> serviceListeners = new ConcurrentHashMap<>(); |
| |
| private final ServiceDiscovery serviceDiscovery; |
| |
| private final InstanceRegistryCache instanceRegistryCache; |
| |
| public AdminMappingListener(ServiceDiscovery serviceDiscovery, InstanceRegistryCache instanceRegistryCache) { |
| this.serviceDiscovery = serviceDiscovery; |
| this.instanceRegistryCache = instanceRegistryCache; |
| } |
| |
| @Override |
| public void onEvent(MappingChangedEvent event) { |
| Set<String> apps = event.getApps(); |
| if (CollectionUtils.isEmpty(apps)) { |
| return; |
| } |
| for (String serviceName : apps) { |
| ServiceInstancesChangedListener serviceInstancesChangedListener = serviceListeners.get(serviceName); |
| if (serviceInstancesChangedListener == null) { |
| synchronized (this) { |
| serviceInstancesChangedListener = serviceListeners.get(serviceName); |
| if (serviceInstancesChangedListener == null) { |
| AddressChangeListener addressChangeListener = new DefaultAddressChangeListener(serviceName, instanceRegistryCache); |
| serviceInstancesChangedListener = new AdminServiceInstancesChangedListener(Sets.newHashSet(serviceName), serviceDiscovery, addressChangeListener); |
| serviceInstancesChangedListener.setUrl(CONSUMER_URL); |
| List<ServiceInstance> serviceInstances = serviceDiscovery.getInstances(serviceName); |
| if (CollectionUtils.isNotEmpty(serviceInstances)) { |
| serviceInstancesChangedListener.onEvent(new ServiceInstancesChangedEvent(serviceName, serviceInstances)); |
| } |
| serviceListeners.put(serviceName, serviceInstancesChangedListener); |
| serviceInstancesChangedListener.setUrl(CONSUMER_URL); |
| serviceDiscovery.addServiceInstancesChangedListener(serviceInstancesChangedListener); |
| } |
| } |
| } |
| } |
| } |
| |
| private static class DefaultAddressChangeListener implements AddressChangeListener { |
| |
| private String serviceName; |
| |
| private InstanceRegistryCache instanceRegistryCache; |
| |
| public DefaultAddressChangeListener(String serviceName, InstanceRegistryCache instanceRegistryCache) { |
| this.serviceName = serviceName; |
| this.instanceRegistryCache = instanceRegistryCache; |
| } |
| |
| @Override |
| public void notifyAddressChanged(String protocolServiceKey, List<URL> urls) { |
| String serviceKey = removeProtocol(protocolServiceKey); |
| ConcurrentMap<String, Map<String, List<InstanceAddressURL>>> appServiceMap = instanceRegistryCache.computeIfAbsent(Constants.PROVIDERS_CATEGORY, key -> new ConcurrentHashMap<>()); |
| Map<String, List<InstanceAddressURL>> serviceMap = appServiceMap.computeIfAbsent(serviceName, key -> new ConcurrentHashMap<>()); |
| if (CollectionUtils.isEmpty(urls)) { |
| serviceMap.remove(serviceKey); |
| } else { |
| List<InstanceAddressURL> instanceAddressUrls = urls.stream().map(url -> (InstanceAddressURL) url).collect(Collectors.toList()); |
| serviceMap.put(serviceKey, instanceAddressUrls); |
| } |
| } |
| |
| private String removeProtocol(String protocolServiceKey) { |
| int index = protocolServiceKey.lastIndexOf(":"); |
| if (index == -1) { |
| return protocolServiceKey; |
| } |
| return protocolServiceKey.substring(0, index); |
| } |
| } |
| |
| } |