Package org.objectweb.joram.client.jms.ha.local

Source Code of org.objectweb.joram.client.jms.ha.local.HALocalRequestChannel

/*
* JORAM: Java(TM) Open Reliable Asynchronous Messaging
* Copyright (C) 2004 - 2009 ScalAgent Distributed Technologies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
* USA.
*
* Initial developer(s): ScalAgent Distributed Technologies
*/
package org.objectweb.joram.client.jms.ha.local;

import java.util.Timer;

import org.objectweb.joram.client.jms.connection.RequestChannel;
import org.objectweb.joram.client.jms.local.LocalRequestChannel;
import org.objectweb.joram.mom.dest.AdminTopic;
import org.objectweb.joram.mom.notifications.GetProxyIdListNot;
import org.objectweb.joram.mom.proxies.ResetCollocatedConnectionsNot;
import org.objectweb.joram.shared.client.AbstractJmsReply;
import org.objectweb.joram.shared.client.AbstractJmsRequest;
import org.objectweb.joram.shared.security.Identity;
import org.objectweb.util.monolog.api.BasicLevel;
import org.objectweb.util.monolog.api.Logger;

import fr.dyade.aaa.agent.AgentId;
import fr.dyade.aaa.agent.Channel;
import fr.dyade.aaa.common.Debug;

public class HALocalRequestChannel implements RequestChannel {
  /** logger */
  public static Logger logger = Debug.getLogger(HALocalRequestChannel.class.getName());

  public final static int NONE = 0;
  public final static int INIT = 1;
  public final static int RUN = 2;

  private static Object lock = new Object();

  private static int status;

  public static void init(String args, boolean firstTime) throws Exception {
    if (logger.isLoggable(BasicLevel.DEBUG))
      logger.log(BasicLevel.DEBUG,
                 "HALocalConnection.init(" + args + ',' + firstTime + ')');

    synchronized (lock) {
      status = INIT;
      lock.notifyAll();
    }
  }

  public static void waitForStart() {
    if (logger.isLoggable(BasicLevel.DEBUG))
      logger.log(BasicLevel.DEBUG, "HALocalConnection.waitForStart()");

    synchronized (lock) {
      while (status == NONE) {
        try {
          lock.wait();
        } catch (InterruptedException exc) {}
      }

      if (status == INIT) {
        // Clean the proxies
        GetProxyIdListNot gpin = new GetProxyIdListNot();
        AgentId[] proxyIds;
        try {
          gpin.invoke(AdminTopic.getDefault());
          proxyIds = gpin.getIds();
          ResetCollocatedConnectionsNot rccn = new ResetCollocatedConnectionsNot();
          for (int i = 0; i < proxyIds.length; i++) {
            Channel.sendTo(proxyIds[i], rccn);
          }
          status = RUN;
        } catch (Exception exc) {
          logger.log(BasicLevel.ERROR, "", exc);
          throw new Error(exc.toString());
        }
      }
    }
  }

  private Identity identity;

  private LocalRequestChannel localRequestChannel;

  public HALocalRequestChannel(Identity identity) {
    if (logger.isLoggable(BasicLevel.DEBUG))
      logger.log(BasicLevel.DEBUG, "HALocalConnection.<init>(" + identity + ')');
   
    waitForStart();
    if (logger.isLoggable(BasicLevel.DEBUG))
      logger.log(BasicLevel.DEBUG, " -> create the local connection");
    this.identity = identity;
  }

  public void setTimer(Timer timer) {
    // No timer is useful
  }

  public void connect() throws Exception {
    localRequestChannel = new LocalRequestChannel(identity);
    localRequestChannel.connect();
  }

  public void send(AbstractJmsRequest request)
  throws Exception {
    localRequestChannel.send(request);
  }

  public AbstractJmsReply receive()
  throws Exception {
    return localRequestChannel.receive();
  }

  public void close() {
    localRequestChannel.close();
  }

  public void closing() {
    // Nothing to do.
  }
}
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