/**
* 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.hedwig.server;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import junit.framework.Assert;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.hedwig.server.common.ServerConfiguration;
import org.apache.hedwig.server.netty.PubSubServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.ZooDefs;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.server.NIOServerCnxnFactory;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.apache.zookeeper.test.ClientBase;
import org.junit.Test;
public class TestPubSubServerStartup {
private static Logger logger = LoggerFactory.getLogger(TestPubSubServerStartup.class);
/**
* Start-up zookeeper + pubsubserver reading from a config URL. Then stop
* and cleanup.
*
* Loop over that.
*
* If the pubsub server does not wait for its zookeeper client to be
* connected, the pubsub server will fail at startup.
*
*/
@Test
public void testPubSubServerInstantiationWithConfig() throws Exception {
for (int i = 0; i < 10; i++) {
logger.info("iteration " + i);
instantiateAndDestroyPubSubServer();
}
}
private void instantiateAndDestroyPubSubServer() throws IOException, InterruptedException, ConfigurationException,
MalformedURLException, Exception {
String hedwigParams = "default_server_host=localhost:4080\n" + "zookeeper_connection_string=localhost:2181\n"
+ "zk_timeout=2000\n";
File hedwigConfigFile = new File(System.getProperty("java.io.tmpdir") + "/hedwig.cfg");
writeStringToFile(hedwigParams, hedwigConfigFile);
ClientBase.setupTestEnv();
File zkTmpDir = File.createTempFile("zookeeper", "test");
zkTmpDir.delete();
zkTmpDir.mkdir();
ZooKeeperServer zks = new ZooKeeperServer(zkTmpDir, zkTmpDir, 2181);
NIOServerCnxnFactory serverFactory = new NIOServerCnxnFactory();
serverFactory.configure(new InetSocketAddress(2181), 100);
serverFactory.startup(zks);
boolean b = ClientBase.waitForServerUp("127.0.0.1:2181", 5000);
ServerConfiguration serverConf = new ServerConfiguration();
serverConf.loadConf(hedwigConfigFile.toURI().toURL());
logger.info("Zookeeper server up and running!");
ZooKeeper zkc = new ZooKeeper("127.0.0.1", 2181, null);
// initialize the zk client with (fake) values
zkc.create("/ledgers", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.create("/ledgers/available", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.close();
PubSubServer hedwigServer = null;
try {
logger.info("starting hedwig broker!");
hedwigServer = new PubSubServer(serverConf);
} catch (Exception e) {
e.printStackTrace();
}
Assert.assertNotNull("failed to instantiate hedwig pub sub server", hedwigServer);
hedwigServer.shutdown();
serverFactory.shutdown();
zks.shutdown();
zkTmpDir.delete();
ClientBase.waitForServerDown("localhost:2181", 10000);
}
public static void writeStringToFile(String string, File f) throws IOException {
if (f.exists()) {
if (!f.delete()) {
throw new RuntimeException("cannot create file " + f.getAbsolutePath());
}
}
if (!f.createNewFile()) {
throw new RuntimeException("cannot create new file " + f.getAbsolutePath());
}
FileWriter fw = new FileWriter(f);
fw.write(string);
fw.close();
}
}