/**
* 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.whirr.service.zookeeper.integration;
import static junit.framework.Assert.assertEquals;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.whirr.Cluster;
import org.apache.whirr.ClusterController;
import org.apache.whirr.ClusterControllerFactory;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.service.zookeeper.ZooKeeperCluster;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class ZooKeeperServiceTest {
private ClusterSpec clusterSpec;
private Cluster cluster;
private ClusterController controller;
private String hosts;
@Before
public void setUp() throws Exception {
CompositeConfiguration config = new CompositeConfiguration();
if (System.getProperty("config") != null) {
config.addConfiguration(new PropertiesConfiguration(System.getProperty("config")));
}
config.addConfiguration(new PropertiesConfiguration("whirr-zookeeper-test.properties"));
clusterSpec = ClusterSpec.withTemporaryKeys(config);
controller = new ClusterControllerFactory().create(clusterSpec.getServiceName());
cluster = controller.launchCluster(clusterSpec);
hosts = ZooKeeperCluster.getHosts(cluster);
}
@Test
public void test() throws Exception {
class ConnectionWatcher implements Watcher {
private ZooKeeper zk;
private CountDownLatch latch = new CountDownLatch(1);
public void connect(String hosts) throws IOException, InterruptedException {
zk = new ZooKeeper(hosts, 5000, this);
latch.await();
}
public ZooKeeper getZooKeeper() {
return zk;
}
@Override
public void process(WatchedEvent event) {
if (event.getState() == KeeperState.SyncConnected) {
latch.countDown();
}
}
public void close() throws InterruptedException {
if (zk != null) {
zk.close();
}
}
}
String path = "/data";
String data = "Hello";
ConnectionWatcher watcher = new ConnectionWatcher();
watcher.connect(hosts);
watcher.getZooKeeper().create(path, data.getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
watcher.close();
watcher = new ConnectionWatcher();
watcher.connect(hosts);
byte[] actualData = watcher.getZooKeeper().getData(path, false, null);
assertEquals(data, new String(actualData));
watcher.close();
}
@After
public void tearDown() throws IOException, InterruptedException {
controller.destroyCluster(clusterSpec);
}
}