Tomoko-hjf commented on code in PR #13747: URL: https://github.com/apache/dubbo/pull/13747#discussion_r1518734481
########## dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/xds/PilotExchanger.java: ########## @@ -0,0 +1,184 @@ +/* + * 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.xds; + +import org.apache.dubbo.common.URL; +import org.apache.dubbo.common.threadpool.manager.FrameworkExecutorRepository; +import org.apache.dubbo.common.utils.CollectionUtils; +import org.apache.dubbo.common.utils.ConcurrentHashSet; +import org.apache.dubbo.rpc.cluster.directory.XdsDirectory; +import org.apache.dubbo.rpc.cluster.xds.protocol.impl.CdsProtocol; +import org.apache.dubbo.rpc.cluster.xds.protocol.impl.EdsProtocol; +import org.apache.dubbo.rpc.cluster.xds.protocol.impl.LdsProtocol; +import org.apache.dubbo.rpc.cluster.xds.protocol.impl.RdsProtocol; +import org.apache.dubbo.rpc.cluster.xds.resource.XdsCluster; +import org.apache.dubbo.rpc.cluster.xds.resource.XdsRouteConfiguration; +import org.apache.dubbo.rpc.cluster.xds.resource.XdsVirtualHost; +import org.apache.dubbo.rpc.model.ApplicationModel; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.function.Consumer; + +public class PilotExchanger { + + // protected final XdsChannel xdsChannel; + + protected final AdsObserver adsObserver; + + protected final LdsProtocol ldsProtocol; + + protected final RdsProtocol rdsProtocol; + + protected final EdsProtocol edsProtocol; + + protected final CdsProtocol cdsProtocol; + + + private final Set<String> domainObserveRequest = new ConcurrentHashSet<String>(); + + private static PilotExchanger GLOBAL_PILOT_EXCHANGER = null; + + private final ApplicationModel applicationModel; + + private static final Map<String, XdsVirtualHost> xdsVirtualHostMap = new ConcurrentHashMap<>(); + + private static final Map<String, XdsCluster> xdsClusterMap = new ConcurrentHashMap<>(); + + private final Map<String, Set<XdsDirectory>> rdsListeners = new HashMap<>(); + + private final Map<String, Set<XdsDirectory>> cdsListeners = new HashMap<>(); + + protected PilotExchanger(URL url) { + // xdsChannel = new XdsChannel(url); + int pollingTimeout = url.getParameter("pollingTimeout", 10); + this.applicationModel = url.getOrDefaultApplicationModel(); + adsObserver = new AdsObserver(url, NodeBuilder.build()); + + // rds 资源回调函数，将 RdsProtocol 的资源存放起来 + Consumer<List<XdsRouteConfiguration>> rdsCallback = (xdsRouteConfigurations) -> { + System.out.println(xdsRouteConfigurations); + xdsRouteConfigurations.forEach(xdsRouteConfiguration -> { + xdsRouteConfiguration.getVirtualHosts().forEach((serviceName, xdsVirtualHost) -> { + this.xdsVirtualHostMap.put(serviceName, xdsVirtualHost); + // 回调更新 + if (rdsListeners.containsKey(serviceName)) { + for (XdsDirectory listener : rdsListeners.get(serviceName)) { + listener.onRdsChange(serviceName, xdsVirtualHost); + } + } + }); + }); + }; + + // eds 资源回调函数 + Consumer<List<XdsCluster>> edsCallback = (xdsClusters) -> { + System.out.println(xdsClusters); + xdsClusters.forEach(xdsCluster -> { + this.xdsClusterMap.put(xdsCluster.getName(), xdsCluster); + if (cdsListeners.containsKey(xdsCluster.getName())) { + for (XdsDirectory listener : cdsListeners.get(xdsCluster.getName())) { + listener.onCdsChange(xdsCluster.getName(), xdsCluster); + } + } + }); + }; + + this.ldsProtocol = new LdsProtocol(adsObserver, NodeBuilder.build(), pollingTimeout); + this.rdsProtocol = new RdsProtocol(adsObserver, NodeBuilder.build(), pollingTimeout, rdsCallback); + this.edsProtocol = new EdsProtocol(adsObserver, NodeBuilder.build(), pollingTimeout, edsCallback); + this.cdsProtocol = new CdsProtocol(adsObserver, NodeBuilder.build(), pollingTimeout); + + // lds 回调函数，在回调函数中监听所有的 rds 资源 + Consumer<Set<String>> ldsCallback = (routes) -> { + rdsProtocol.getResource(routes); + }; + + ldsProtocol.setUpdateCallback(ldsCallback); + + ldsProtocol.getListeners(); + + // cds 回调函数，在回调函数中监听所有的 eds 资源 + Consumer<Set<String>> cdsCallback = (clusters) -> { + edsProtocol.getResource(clusters); + }; + + cdsProtocol.setUpdateCallback(cdsCallback); + + cdsProtocol.getClusters(); + + } + + public static Map<String, XdsVirtualHost> getXdsVirtualHostMap() { + return xdsVirtualHostMap; + } + + public static Map<String, XdsCluster> getXdsClusterMap() { + return xdsClusterMap; + } + + public void subscribeRds(String applicationName, XdsDirectory listener) { + rdsListeners.computeIfAbsent(applicationName, key -> new ConcurrentHashSet<>()); + rdsListeners.get(applicationName).add(listener); + if (xdsVirtualHostMap.containsKey(applicationName)) { Review Comment: `XdsVirtualHostMap` will be initialized in `PilotExchanger` class initialization. `PilotExchanger` will be initialized in `RegistryProtocol#refer()`  -- This is an automated message from the Apache Git Service. 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