yangyichao-mango commented on a change in pull request #3244: URL: https://github.com/apache/incubator-dolphinscheduler/pull/3244#discussion_r457866979
########## File path: dolphinscheduler-service/src/main/java/org/apache/dolphinscheduler/service/zk/CuratorZookeeperClient.java ########## @@ -0,0 +1,119 @@ +/* + * 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.dolphinscheduler.service.zk; + +import org.apache.commons.lang.StringUtils; +import org.apache.curator.framework.CuratorFramework; +import org.apache.curator.framework.CuratorFrameworkFactory; +import org.apache.curator.framework.api.ACLProvider; +import org.apache.curator.framework.state.ConnectionState; +import org.apache.curator.retry.ExponentialBackoffRetry; +import org.apache.zookeeper.ZooDefs; +import org.apache.zookeeper.data.ACL; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.InitializingBean; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.stereotype.Component; + +import java.nio.charset.StandardCharsets; +import java.util.List; + +import static org.apache.dolphinscheduler.common.utils.Preconditions.checkNotNull; + +/** + * Shared Curator zookeeper client + */ +@Component +public class CuratorZookeeperClient implements InitializingBean { + private final Logger logger = LoggerFactory.getLogger(CuratorZookeeperClient.class); + + @Autowired + private ZookeeperConfig zookeeperConfig; + + private CuratorFramework zkClient; + + + @Override + public void afterPropertiesSet() throws Exception { + this.zkClient = buildClient(); + initStateLister(); + } + + private CuratorFramework buildClient() { + logger.info("zookeeper registry center init, server lists is: {}.", zookeeperConfig.getServerList()); + + CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder().ensembleProvider(new DefaultEnsembleProvider(checkNotNull(zookeeperConfig.getServerList(),"zookeeper quorum can't be null"))) + .retryPolicy(new ExponentialBackoffRetry(zookeeperConfig.getBaseSleepTimeMs(), zookeeperConfig.getMaxRetries(), zookeeperConfig.getMaxSleepMs())); + + //these has default value + if (0 != zookeeperConfig.getSessionTimeoutMs()) { + builder.sessionTimeoutMs(zookeeperConfig.getSessionTimeoutMs()); + } + if (0 != zookeeperConfig.getConnectionTimeoutMs()) { + builder.connectionTimeoutMs(zookeeperConfig.getConnectionTimeoutMs()); + } + if (StringUtils.isNotBlank(zookeeperConfig.getDigest())) { + builder.authorization("digest", zookeeperConfig.getDigest().getBytes(StandardCharsets.UTF_8)).aclProvider(new ACLProvider() { + + @Override + public List<ACL> getDefaultAcl() { + return ZooDefs.Ids.CREATOR_ALL_ACL; + } + + @Override + public List<ACL> getAclForPath(final String path) { + return ZooDefs.Ids.CREATOR_ALL_ACL; + } + }); + } + zkClient = builder.build(); + zkClient.start(); + try { + zkClient.blockUntilConnected(); + } catch (final Exception ex) { + throw new RuntimeException(ex); + } + return zkClient; + } + + public void initStateLister() { + checkNotNull(zkClient); + + zkClient.getConnectionStateListenable().addListener((client, newState) -> { Review comment: > 你好，原来的日志打印的也是zookeeper的地址。另外，这种连接状态的监控，应该是用一个listener监听就可以了，重复的监听是没有意义的。  ---------------------------------------------------------------- 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]
