/*
* Licensed 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 com.facebook.presto.kafka.util;
import com.google.common.io.Files;
import org.apache.zookeeper.server.NIOServerCnxnFactory;
import org.apache.zookeeper.server.ServerCnxnFactory;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.apache.zookeeper.server.persistence.FileTxnSnapLog;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.concurrent.atomic.AtomicBoolean;
import static io.airlift.testing.FileUtils.deleteRecursively;
public class EmbeddedZookeeper
implements Closeable
{
private final int port;
private final File zkDataDir;
private final ZooKeeperServer zkServer;
private final ServerCnxnFactory cnxnFactory;
private final AtomicBoolean started = new AtomicBoolean();
private final AtomicBoolean stopped = new AtomicBoolean();
public EmbeddedZookeeper()
throws IOException
{
this(TestUtils.findUnusedPort());
}
public EmbeddedZookeeper(int port)
throws IOException
{
this.port = port;
zkDataDir = Files.createTempDir();
zkServer = new ZooKeeperServer();
FileTxnSnapLog ftxn = new FileTxnSnapLog(zkDataDir, zkDataDir);
zkServer.setTxnLogFactory(ftxn);
cnxnFactory = NIOServerCnxnFactory.createFactory(new InetSocketAddress(port), 0);
}
public void start()
throws InterruptedException, IOException
{
if (!started.getAndSet(true)) {
cnxnFactory.startup(zkServer);
}
}
@Override
public void close()
{
if (started.get() && !stopped.getAndSet(true)) {
cnxnFactory.shutdown();
try {
cnxnFactory.join();
}
catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
if (zkServer.isRunning()) {
zkServer.shutdown();
}
deleteRecursively(zkDataDir);
}
}
public String getConnectString()
{
return "127.0.0.1:" + Integer.toString(port);
}
public int getPort()
{
return port;
}
}