Package org.apache.bookkeeper.util

Source Code of org.apache.bookkeeper.util.LocalBookKeeper$emptyWatcher

package org.apache.bookkeeper.util;

/**
* 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.
*/

import java.io.File;
import java.io.IOException;

import org.apache.bookkeeper.client.BookKeeper;
import org.apache.bookkeeper.client.LedgerHandle;
import org.apache.bookkeeper.client.LedgerSequence;
import org.apache.bookkeeper.proto.BookieServer;
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.server.NIOServerCnxn;
import org.apache.zookeeper.server.ServerStats;
import org.apache.zookeeper.server.ZooKeeperServer;

public class LocalBookKeeper {
  Logger LOG;
  ConsoleAppender ca;
  int numberOfBookies;
 
  public LocalBookKeeper() {
    LOG = Logger.getRootLogger();
    ca = new ConsoleAppender(new PatternLayout());
    LOG.addAppender(ca);
    LOG.setLevel(Level.INFO);
    numberOfBookies = 3;
  }
 
  public LocalBookKeeper(int numberOfBookies){
    this();
    this.numberOfBookies = numberOfBookies;
    LOG.info("Running " + this.numberOfBookies + " bookie(s).");
  }
 
  private final String HOSTPORT = "127.0.0.1:2181";
  NIOServerCnxn.Factory serverFactory;
  ZooKeeperServer zks;
  ZooKeeper zkc;
  int ZooKeeperDefaultPort = 2181;
  File ZkTmpDir;

  //BookKeeper variables
  File tmpDirs[];
  BookieServer bs[];
  Integer initialPort = 5000;

  /**
   * @param args
   */
 
  private void runZookeeper() throws IOException{
    // create a ZooKeeper server(dataDir, dataLogDir, port)
    LOG.info("Starting ZK server");
    //ServerStats.registerAsConcrete();
    //ClientBase.setupTestEnv();
    ZkTmpDir = File.createTempFile("zookeeper", "test");
        ZkTmpDir.delete();
        ZkTmpDir.mkdir();
       
    try {
      zks = new ZooKeeperServer(ZkTmpDir, ZkTmpDir, ZooKeeperDefaultPort);
      serverFactory =  new NIOServerCnxn.Factory(ZooKeeperDefaultPort);
      serverFactory.startup(zks);
    } catch (IOException e1) {
      // TODO Auto-generated catch block
      e1.printStackTrace();
    } catch (InterruptedException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
        boolean b = ClientBase.waitForServerUp(HOSTPORT, ClientBase.CONNECTION_TIMEOUT);
        LOG.debug("ZooKeeper server up: " + b);
  }
 
  private void initializeZookeper(){
    LOG.info("Instantiate ZK Client");
    //initialize the zk client with values
    try {
      zkc = new ZooKeeper("127.0.0.1", ZooKeeperDefaultPort, new emptyWatcher());
      zkc.create("/ledgers", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
      zkc.create("/ledgers/available", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
      // create an entry for each requested bookie
      for(int i = 0; i < numberOfBookies; i++){
        zkc.create("/ledgers/available/127.0.0.1:" +
          Integer.toString(initialPort + i), new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
      }
    } catch (KeeperException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (InterruptedException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }   
  }
  private void runBookies() throws IOException{
    LOG.info("Starting Bookie(s)");
    // Create Bookie Servers (B1, B2, B3)
   
    tmpDirs = new File[numberOfBookies];   
    bs = new BookieServer[numberOfBookies];
   
    for(int i = 0; i < numberOfBookies; i++){
      tmpDirs[i] = File.createTempFile("bookie" + Integer.toString(i), "test");
      tmpDirs[i].delete();
      tmpDirs[i].mkdir();
     
      bs[i] = new BookieServer(initialPort + i, tmpDirs[i], new File[]{tmpDirs[i]});
      bs[i].start();
    }   
  }
 
  public static void main(String[] args) throws IOException, InterruptedException {
    if(args.length < 1){
      usage();
      System.exit(-1);
    }
    LocalBookKeeper lb = new LocalBookKeeper(Integer.parseInt(args[0]));
    lb.runZookeeper();
    lb.initializeZookeper();
    lb.runBookies();
    while (true){
      Thread.sleep(5000);
    }
  }

  private static void usage() {
    System.err.println("Usage: LocalBookKeeper number-of-bookies")
  }

  /*  User for testing purposes, void */
  class emptyWatcher implements Watcher{
    public void process(WatchedEvent event) {}
  }

}
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