Java tutorial
/** * Copyright (c) 2011 Yahoo! Inc. All rights reserved. * * 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. See accompanying LICENSE file. */ package com.yahoo.omid.tso; import java.io.IOException; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import org.apache.bookkeeper.util.LocalBookKeeper; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.HBaseConfiguration; import org.jboss.netty.channel.ChannelFactory; import org.jboss.netty.channel.group.ChannelGroup; import org.jboss.netty.channel.group.DefaultChannelGroup; import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory; import org.junit.After; import org.junit.AfterClass; import org.junit.Before; import org.junit.BeforeClass; import com.yahoo.omid.TestUtils; import com.yahoo.omid.tso.messages.TimestampRequest; import com.yahoo.omid.tso.messages.TimestampResponse; public class TSOTestBase { private static final Log LOG = LogFactory.getLog(TSOTestBase.class); //private static Thread bkthread; //private static Thread tsothread; private static ExecutorService bkExecutor; private static ExecutorService tsoExecutor; protected static TestClientHandler clientHandler; protected static TestClientHandler secondClientHandler; private static ChannelGroup channelGroup; private static ChannelFactory channelFactory; protected static TSOState state; private static TSOServer tso; final static public RowKey r1 = new RowKey(new byte[] { 0xd, 0xe, 0xa, 0xd }, new byte[] { 0xb, 0xe, 0xe, 0xf }); final static public RowKey r2 = new RowKey(new byte[] { 0xb, 0xa, 0xa, 0xd }, new byte[] { 0xc, 0xa, 0xf, 0xe }); public static void setupClient() throws IOException { // *** Start the Netty configuration *** Configuration conf = HBaseConfiguration.create(); conf.set("tso.host", "localhost"); conf.setInt("tso.port", 1234); // Start client with Nb of active threads = 3 as maximum. channelFactory = new NioClientSocketChannelFactory(Executors.newCachedThreadPool(), Executors.newCachedThreadPool(), 3); // Create the bootstrap // Create the global ChannelGroup channelGroup = new DefaultChannelGroup(TransactionClient.class.getName()); // Create the associated Handler clientHandler = new TestClientHandler(conf); // *** Start the Netty running *** System.out.println("PARAM MAX_ROW: " + ClientHandler.MAX_ROW); System.out.println("PARAM DB_SIZE: " + ClientHandler.DB_SIZE); // Connect to the server, wait for the connection and get back the channel clientHandler.await(); // Second client handler secondClientHandler = new TestClientHandler(conf); // *** Start the Netty running *** System.out.println("PARAM MAX_ROW: " + ClientHandler.MAX_ROW); System.out.println("PARAM DB_SIZE: " + ClientHandler.DB_SIZE); } public static void teardownClient() { // Now close all channels System.out.println("close channelGroup"); channelGroup.close().awaitUninterruptibly(); // Now release resources System.out.println("close external resources"); channelFactory.releaseExternalResources(); } @BeforeClass public static void setupBookkeeper() throws Exception { System.out.println("PATH : " + System.getProperty("java.library.path")); if (bkExecutor == null) { bkExecutor = Executors.newSingleThreadExecutor(); Runnable bkTask = new Runnable() { public void run() { try { Thread.currentThread().setName("BookKeeper"); String[] args = new String[1]; args[0] = "5"; LOG.info("Starting bk"); LocalBookKeeper.main(args); } catch (InterruptedException e) { // go away quietly } catch (Exception e) { LOG.error("Error starting local bk", e); } } }; bkExecutor.execute(bkTask); } } @AfterClass public static void teardownBookkeeper() throws Exception { if (bkExecutor != null) { bkExecutor.shutdownNow(); } TestUtils.waitForSocketNotListening("localhost", 1234, 1000); Thread.sleep(10); } @Before public void setupTSO() throws Exception { if (!LocalBookKeeper.waitForServerUp("localhost:2181", 10000)) { throw new Exception("Error starting zookeeper/bookkeeper"); } /* * TODO: Fix LocalBookKeeper to wait until the bookies are up * instead of waiting only until the zookeeper server is up. */ Thread.sleep(500); LOG.info("Starting TSO"); tso = new TSOServer( TSOServerConfig.configFactory(1234, 0, recoveryEnabled(), 4, 2, new String("localhost:2181"))); tsoExecutor = Executors.newSingleThreadExecutor(); tsoExecutor.execute(tso); TestUtils.waitForSocketListening("localhost", 1234, 100); LOG.info("Finished loading TSO"); state = tso.getState(); Thread.currentThread().setName("JUnit Thread"); setupClient(); } @After public void teardownTSO() throws Exception { clientHandler.sendMessage(new TimestampRequest()); while (!(clientHandler.receiveMessage() instanceof TimestampResponse)) ; // Do nothing clientHandler.clearMessages(); clientHandler.setAutoFullAbort(true); secondClientHandler.sendMessage(new TimestampRequest()); while (!(secondClientHandler.receiveMessage() instanceof TimestampResponse)) ; // Do nothing secondClientHandler.clearMessages(); secondClientHandler.setAutoFullAbort(true); tso.stop(); if (tsoExecutor != null) { tsoExecutor.shutdownNow(); } teardownClient(); TestUtils.waitForSocketNotListening("localhost", 1234, 1000); Thread.sleep(10); } protected boolean recoveryEnabled() { return false; } }