wayilau commented on a change in pull request #2725: Add cluster-etcd-plugin URL: https://github.com/apache/skywalking/pull/2725#discussion_r288487624
########## File path: oap-server/server-cluster-plugin/cluster-etcd-plugin/src/main/java/org/apache/skywalking/oap/server/cluster/plugin/etcd/EtcdCoordinator.java ########## @@ -0,0 +1,104 @@ +/* + * 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.skywalking.oap.server.cluster.plugin.etcd; + +import com.google.common.base.Strings; +import com.google.gson.Gson; +import com.google.gson.reflect.TypeToken; +import java.util.ArrayList; +import java.util.List; +import mousio.etcd4j.EtcdClient; +import mousio.etcd4j.promises.EtcdResponsePromise; +import mousio.etcd4j.responses.EtcdKeysResponse; +import org.apache.skywalking.oap.server.core.cluster.ClusterNodesQuery; +import org.apache.skywalking.oap.server.core.cluster.ClusterRegister; +import org.apache.skywalking.oap.server.core.cluster.RemoteInstance; +import org.apache.skywalking.oap.server.core.cluster.ServiceRegisterException; +import org.apache.skywalking.oap.server.core.remote.client.Address; +import org.apache.skywalking.oap.server.library.util.CollectionUtils; + +/** + * @author Alan Lau + */ +public class EtcdCoordinator implements ClusterRegister, ClusterNodesQuery { + + private ClusterModuleEtcdConfig config; + + private EtcdClient client; + + private volatile Address selfAddress; + + private final String serviceName; + + public EtcdCoordinator(ClusterModuleEtcdConfig config, EtcdClient client) { + this.config = config; + this.client = client; + this.serviceName = config.getServiceName(); + } + + @Override public List<RemoteInstance> queryRemoteNodes() { + + List<RemoteInstance> res = new ArrayList<>(); + try { + EtcdKeysResponse response = client.get(serviceName).send().get(); + String json = response.getNode().getValue(); + Gson gson = new Gson(); + List<EtcdEndpoint> list = gson.fromJson(json, new TypeToken<List<EtcdEndpoint>>() { + }.getType()); + + if (CollectionUtils.isNotEmpty(list)) { + list.forEach(node -> { + res.add(new RemoteInstance(new Address(node.getHost(), node.getPort(), true))); + }); + + } + + } catch (Exception e) { + throw new RuntimeException(e); + } + + return res; + } + + @Override public void registerRemote(RemoteInstance remoteInstance) throws ServiceRegisterException { + + if (needUsingInternalAddr()) { + remoteInstance = new RemoteInstance(new Address(config.getInternalComHost(), config.getInternalComPort(), true)); + } + + this.selfAddress = remoteInstance.getAddress(); + + EtcdEndpoint endpoint = new EtcdEndpoint.Builder().serviceId(serviceName).host(selfAddress.getHost()).port(selfAddress.getPort()).build(); Review comment: emm.., i just test the etcd docker. i will do this tomorrow. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
