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*
* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.bookkeeper.test;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.bookkeeper.util.ZkUtils;
import org.apache.bookkeeper.zookeeper.ZooKeeperWatcherBase;
import org.apache.commons.io.FileUtils;
import java.util.concurrent.CountDownLatch;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.server.NIOServerCnxnFactory;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.apache.zookeeper.test.ClientBase;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.junit.Assert.*;
public class ZooKeeperUtil {
static final Logger LOG = LoggerFactory.getLogger(ZooKeeperUtil.class);
// ZooKeeper related variables
protected final static Integer zooKeeperPort = PortManager.nextFreePort();
private final InetSocketAddress zkaddr;
protected ZooKeeperServer zks;
protected ZooKeeper zkc; // zookeeper client
protected NIOServerCnxnFactory serverFactory;
protected File ZkTmpDir;
private final String connectString;
public ZooKeeperUtil() {
zkaddr = new InetSocketAddress(zooKeeperPort);
connectString= "localhost:" + zooKeeperPort;
}
public ZooKeeper getZooKeeperClient() {
return zkc;
}
public String getZooKeeperConnectString() {
return connectString;
}
public void startServer() throws Exception {
// create a ZooKeeper server(dataDir, dataLogDir, port)
LOG.debug("Running ZK server");
// ServerStats.registerAsConcrete();
ClientBase.setupTestEnv();
ZkTmpDir = File.createTempFile("zookeeper", "test");
ZkTmpDir.delete();
ZkTmpDir.mkdir();
zks = new ZooKeeperServer(ZkTmpDir, ZkTmpDir,
ZooKeeperServer.DEFAULT_TICK_TIME);
serverFactory = new NIOServerCnxnFactory();
serverFactory.configure(zkaddr, 100);
serverFactory.startup(zks);
boolean b = ClientBase.waitForServerUp(getZooKeeperConnectString(),
ClientBase.CONNECTION_TIMEOUT);
LOG.debug("Server up: " + b);
// create a zookeeper client
LOG.debug("Instantiate ZK Client");
ZooKeeperWatcherBase w = new ZooKeeperWatcherBase(10000);
zkc = ZkUtils.createConnectedZookeeperClient(
getZooKeeperConnectString(), w);
// initialize the zk client with values
zkc.create("/ledgers", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.create("/ledgers/available", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
}
public void sleepServer(final int seconds, final CountDownLatch l)
throws InterruptedException, IOException {
Thread[] allthreads = new Thread[Thread.activeCount()];
Thread.enumerate(allthreads);
for (final Thread t : allthreads) {
if (t.getName().contains("SyncThread:0")) {
Thread sleeper = new Thread() {
public void run() {
try {
t.suspend();
l.countDown();
Thread.sleep(seconds*1000);
t.resume();
} catch (Exception e) {
LOG.error("Error suspending thread", e);
}
}
};
sleeper.start();
return;
}
}
throw new IOException("ZooKeeper thread not found");
}
public void expireSession(ZooKeeper zk) throws Exception {
long id = zk.getSessionId();
byte[] password = zk.getSessionPasswd();
ZooKeeperWatcherBase w = new ZooKeeperWatcherBase(10000);
ZooKeeper zk2 = new ZooKeeper(getZooKeeperConnectString(),
zk.getSessionTimeout(), w, id, password);
w.waitForConnection();
zk2.close();
}
public void killServer() throws Exception {
if (zkc != null) {
zkc.close();
}
// shutdown ZK server
if (serverFactory != null) {
serverFactory.shutdown();
assertTrue("waiting for server down",
ClientBase.waitForServerDown(getZooKeeperConnectString(),
ClientBase.CONNECTION_TIMEOUT));
}
if (zks != null) {
zks.getTxnLogFactory().close();
}
// ServerStats.unregister();
FileUtils.deleteDirectory(ZkTmpDir);
}
}