/**
* Copyright 2010 the original author or authors.
*
* 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 org.I0Itec.zkclient.testutil;
import com.netflix.curator.framework.CuratorFramework;
import com.netflix.curator.framework.CuratorFrameworkFactory;
import com.netflix.curator.retry.RetryOneTime;
import com.netflix.curator.test.TestingServer;
import com.netflix.curator.test.Timing;
import com.netflix.curator.x.zkclientbridge.CuratorZKClientBridge;
import org.I0Itec.zkclient.IZkConnection;
import org.I0Itec.zkclient.ZkClient;
import org.apache.log4j.Logger;
import org.junit.rules.ExternalResource;
import java.io.IOException;
import java.util.List;
public class ZkTestSystem extends ExternalResource {
protected static final Logger LOG = Logger.getLogger(ZkTestSystem.class);
private static int PORT = 10002;
private static ZkTestSystem _instance;
private TestingServer _zkServer;
private ZkClient _zkClient;
private ZkTestSystem() {
LOG.info("~~~~~~~~~~~~~~~ starting zk system ~~~~~~~~~~~~~~~");
try {
_zkServer = new TestingServer(PORT);
_zkClient = ZkTestSystem.createZkClient(_zkServer.getConnectString());
}
catch ( Exception e ) {
throw new RuntimeException(e);
}
LOG.info("~~~~~~~~~~~~~~~ zk system started ~~~~~~~~~~~~~~~");
}
@Override
// executed before every test method
protected void before() throws Throwable {
cleanupZk();
}
@Override
// executed after every test method
protected void after() {
cleanupZk();
}
private void cleanupZk() {
LOG.info("cleanup zk namespace");
List<String> children = getZkClient().getChildren("/");
for (String child : children) {
if (!child.equals("zookeeper")) {
getZkClient().deleteRecursive("/" + child);
}
}
LOG.info("unsubscribing " + getZkClient().numberOfListeners() + " listeners");
getZkClient().unsubscribeAll();
}
public static ZkTestSystem getInstance() {
if (_instance == null) {
_instance = new ZkTestSystem();
_instance.cleanupZk();
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
LOG.info("shutting zk down");
try {
getInstance().getZkClient().close();
getInstance().getZkServer().close();
}
catch ( IOException e ) {
throw new RuntimeException(e);
}
}
});
}
return _instance;
}
public TestingServer getZkServer() {
return _zkServer;
}
public String getZkServerAddress() {
return "localhost:" + getServerPort();
}
public ZkClient getZkClient() {
return _zkClient;
}
public int getServerPort() {
return PORT;
}
public static IZkConnection createZkConnection(String connectString) {
Timing timing = new Timing();
CuratorFramework client = CuratorFrameworkFactory.newClient(connectString, timing.session(), timing.connection(), new RetryOneTime(1));
client.start();
try
{
return new CuratorZKClientBridge(client);
}
catch ( Exception e )
{
throw new RuntimeException(e);
}
}
public static ZkClient createZkClient(String connectString) {
try
{
Timing timing = new Timing();
return new ZkClient(createZkConnection(connectString), timing.connection());
}
catch ( Exception e )
{
throw new RuntimeException(e);
}
}
public ZkClient createZkClient() {
return createZkClient("localhost:" + PORT);
}
public void showStructure() {
getZkClient().showFolders(System.out);
}
}