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Apache ZooKeeper 3.7.0 Server Source Code
Apache ZooKeeper is an open-source server which enables highly
reliable distributed coordination.
Apache ZooKeeper Server Source Code files are provided in the source packge (apache-zookeeper-3.7.0.tar.gz). You can download it at Apache ZooKeeper Website.
You can also browse Apache ZooKeeper Server Source Code below:
✍: FYIcenter.com
⏎ org/apache/zookeeper/server/controller/ZooKeeperServerController.java
/** * 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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.zookeeper.server.controller; import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; import java.io.IOException; import org.apache.zookeeper.server.ExitCode; import org.apache.zookeeper.server.ServerCnxn; import org.apache.zookeeper.server.ServerCnxnFactory; import org.apache.zookeeper.server.quorum.QuorumPeer; import org.apache.zookeeper.server.quorum.QuorumPeerConfig; import org.apache.zookeeper.util.ServiceUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Class which accepts commands to modify ZooKeeperServer state or Connection state at runtime for the purpose of * single machine integration testing. Not meant to be used in production. It is recommended to use this in conjunction * with the CommandListener HttpServer and CommandClient. * */ @SuppressFBWarnings(value = "IS2_INCONSISTENT_SYNC", justification = "quorum peer is internally synchronized.") public class ZooKeeperServerController { private static final Logger LOG = LoggerFactory.getLogger(ZooKeeperServerController.class); private static final long DEFAULT_DELAY_MS = 1000; private QuorumPeer quorumPeer; private ControllableConnectionFactory cnxnFactory; public ZooKeeperServerController(QuorumPeerConfig config) throws IOException { if (config == null) { throw new IllegalArgumentException("ZooKeeperServerController requires a valid config!"); } cnxnFactory = new ControllableConnectionFactory(); cnxnFactory.configure(config.getClientPortAddress(), config.getMaxClientCnxns(), config.getClientPortListenBacklog()); quorumPeer = QuorumPeer.createFromConfig(config); quorumPeer.setCnxnFactory(cnxnFactory); } public void run() { try { quorumPeer.start(); quorumPeer.join(); } catch (Exception ex) { LOG.error("Fatal error starting quorum peer", ex); ServiceUtils.requestSystemExit(ExitCode.UNEXPECTED_ERROR.getValue()); } } protected ServerCnxnFactory getCnxnFactory() { return cnxnFactory; } public synchronized void shutdown() { if (this.cnxnFactory != null) { this.cnxnFactory.shutdown(); this.cnxnFactory = null; } if (this.quorumPeer != null && this.quorumPeer.isRunning()) { this.quorumPeer.shutdown(); this.quorumPeer = null; } } public synchronized boolean isReady() { return this.cnxnFactory != null && this.quorumPeer != null && this.quorumPeer.isRunning() && this.quorumPeer.getActiveServer() != null; } /** * Process the command. An exception indicates errors. No exception indicates success. */ public void processCommand(ControlCommand command) { if (command == null) { throw new IllegalArgumentException("Invalid command parameter!"); } LOG.info("processing command {}{}", command.getAction(), command.getParameter() == null ? "" : "[" + command.getParameter() + "]"); // Don't process command if we are shutting down or still initializing. if (!isReady()) { throw new IllegalStateException("Service is not ready. It has already been shutdown or is still initializing."); } switch (command.getAction()) { case PING: // NO-OP break; case SHUTDOWN: shutdown(); break; case CLOSECONNECTION: if (command.getParameter() == null) { cnxnFactory.closeAll(ServerCnxn.DisconnectReason.CLOSE_ALL_CONNECTIONS_FORCED); } else { // A single parameter should be a session id as long. // Parse failure exceptions will be sent to the caller. cnxnFactory.closeSession(Long.decode(command.getParameter()), ServerCnxn.DisconnectReason.CONNECTION_CLOSE_FORCED); } break; case EXPIRESESSION: // TODO: (hanm) implement once dependent feature is ready. if (command.getParameter() == null) { // expireAllSessions(); } else { // A single parameter should be a session id as long. // Parse failure exceptions will be sent to the caller // expireSession(Long.decode(command.getParameter())); } break; case REJECTCONNECTIONS: // TODO: (hanm) implement once dependent feature is ready. //cnxnFactory.rejectNewConnections(); break; case ADDDELAY: cnxnFactory.delayResponses(command.getParameter() == null ? DEFAULT_DELAY_MS : Long.decode(command.getParameter())); break; case NORESPONSE: if (command.getParameter() == null) { cnxnFactory.holdAllFutureResponses(); } else { cnxnFactory.holdFutureResponses(Long.decode(command.getParameter())); } break; case FAILREQUESTS: if (command.getParameter() == null) { cnxnFactory.failAllFutureRequests(); } else { cnxnFactory.failFutureRequests(Long.decode(command.getParameter())); } break; case RESET: cnxnFactory.resetBadBehavior(); break; case ELECTNEWLEADER: quorumPeer.startLeaderElection(); break; default: throw new IllegalArgumentException("Unknown command: " + command); } } }
⏎ org/apache/zookeeper/server/controller/ZooKeeperServerController.java
Or download all of them as a single archive file:
File name: zookeeper-server-3.7.0-fyi.zip File size: 871011 bytes Release date: 2021-05-17 Download
⇒ Apache ZooKeeper 3.7.0 Jute Source Code
⇐ Download Apache ZooKeeper 3.7.0 Source Package
2022-11-16, 25667👍, 0💬
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