/**
* Copyright 2008 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 net.sf.katta.testutil;
import java.io.File;
import net.sf.katta.DefaultNameSpaceImpl;
import net.sf.katta.protocol.InteractionProtocol;
import net.sf.katta.util.FileUtil;
import net.sf.katta.util.ZkConfiguration;
import org.I0Itec.zkclient.ZkClient;
import org.I0Itec.zkclient.ZkServer;
import org.apache.log4j.Logger;
import org.junit.rules.ExternalResource;
public class ZkTestSystem extends ExternalResource {
protected static final Logger LOG = Logger.getLogger(ZkTestSystem.class);
private static int PORT = 10001;
private static ZkTestSystem _instance;
private ZkServer _zkServer;
private ZkConfiguration _conf;
private ZkTestSystem() {
LOG.info("~~~~~~~~~~~~~~~ starting zk system ~~~~~~~~~~~~~~~");
String baseDir = "build/zkdata";
FileUtil.deleteFolder(new File(baseDir));
String dataDir = baseDir + "/data";
String logDir = baseDir + "/log";
_conf = new ZkConfiguration();
_conf.setZKServers("localhost:" + PORT);
_conf.setZKRootPath("/zk_testsystem");
_zkServer = new ZkServer(dataDir, logDir, new DefaultNameSpaceImpl(_conf), PORT);
_zkServer.start();
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");
getZkClient().deleteRecursive(_conf.getZkRootPath());
new DefaultNameSpaceImpl(_conf).createDefaultNameSpace(getZkClient());
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");
getInstance().getZkServer().shutdown();
}
});
}
return _instance;
}
public ZkServer getZkServer() {
return _zkServer;
}
public ZkClient getZkClient() {
return _zkServer.getZkClient();
}
public InteractionProtocol getInteractionProtocol() {
return new InteractionProtocol(_zkServer.getZkClient(), _conf);
}
public InteractionProtocol createInteractionProtocol() {
return new InteractionProtocol(createZkClient(), _conf);
}
public ZkConfiguration getZkConf() {
return _conf;
}
public int getServerPort() {
return PORT;
}
public ZkClient createZkClient() {
return new ZkClient("localhost:" + PORT);
}
public void showStructure() {
getInteractionProtocol().showStructure(true);
}
}