| /* $Id$ */ |
| |
| /** |
| * 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.manifoldcf.core.lockmanager; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Properties; |
| |
| import org.apache.zookeeper.server.ServerConfig; |
| import org.apache.zookeeper.server.ZooKeeperServerMain; |
| import org.apache.zookeeper.server.quorum.QuorumPeerConfig; |
| |
| public class ZooKeeperInstance { |
| protected final int zkPort; |
| protected final File tempDir; |
| |
| protected ZooKeeperThread zookeeperThread = null; |
| |
| public ZooKeeperInstance(final int zkPort, final File tempDir) { |
| this.zkPort = zkPort; |
| this.tempDir = tempDir; |
| } |
| |
| public void start() throws Exception { |
| final Properties startupProperties = new Properties(); |
| startupProperties.setProperty("tickTime", "2000"); |
| startupProperties.setProperty("dataDir", tempDir.toString()); |
| startupProperties.setProperty("clientPort", Integer.toString(zkPort)); |
| startupProperties.setProperty("admin.enableServer", "false"); |
| |
| final QuorumPeerConfig quorumConfiguration = new QuorumPeerConfig(); |
| quorumConfiguration.parseProperties(startupProperties); |
| |
| final ServerConfig configuration = new ServerConfig(); |
| configuration.readFrom(quorumConfiguration); |
| |
| zookeeperThread = new ZooKeeperThread(configuration); |
| zookeeperThread.start(); |
| // We have no way of knowing whether zookeeper is alive or not, but the |
| // client is supposed to know about that. But it doesn't, so wait for 5 seconds |
| Thread.sleep(5000L); |
| } |
| |
| public void stop() throws Exception { |
| while (true) { |
| if (zookeeperThread == null) |
| break; |
| else if (!zookeeperThread.isAlive()) { |
| final Throwable e = zookeeperThread.finishUp(); |
| if (e != null) { |
| if (e instanceof RuntimeException) |
| throw (RuntimeException) e; |
| else if (e instanceof Exception) |
| throw (Exception) e; |
| else if (e instanceof Error) |
| throw (Error) e; |
| } |
| zookeeperThread = null; |
| } else { |
| // This isn't the best way to kill zookeeper but it's the only way |
| // we've got. |
| zookeeperThread.interrupt(); |
| Thread.sleep(1000L); |
| } |
| } |
| } |
| |
| protected static class ZooKeeperThread extends Thread { |
| protected final ServerConfig config; |
| |
| protected Throwable exception = null; |
| |
| public ZooKeeperThread(final ServerConfig config) { |
| this.config = config; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| final ZooKeeperServerMain server = new ZooKeeperServerMain(); |
| server.runFromConfig(config); |
| } catch (final IOException e) { |
| // Ignore IOExceptions, since that seems to be normal when shutting |
| // down zookeeper via thread.interrupt() |
| } catch (final Throwable e) { |
| exception = e; |
| } |
| } |
| |
| public Throwable finishUp() throws InterruptedException { |
| join(); |
| return exception; |
| } |
| } |
| |
| } |