/*
 * Copyright (c) 1998-2012 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.amqp.server;

import java.io.IOException;
import java.io.InputStream;

import com.caucho.amqp.common.AmqpSenderLink;
import com.caucho.amqp.io.AmqpError;
import com.caucho.amqp.io.FrameFlow;
import com.caucho.message.SettleMode;
import com.caucho.message.broker.BrokerReceiver;
import com.caucho.message.broker.ReceiverMessageHandler;

/**
 * link session management
 */
public class AmqpServerSenderLink extends AmqpSenderLink
{
  private ReceiverMessageHandler _receiverHandler;
  private BrokerReceiver _receiver;
  private final SettleMode _settleMode;
  
  public AmqpServerSenderLink(String name,
                              String address,
                              SettleMode settleMode)
  {
    super(name, address);
    
    _settleMode = settleMode;
    
    _receiverHandler = new BrokerMessageReceiver();
  }
  
  ReceiverMessageHandler getBrokerHandler()
  {
    return _receiverHandler;
  }
  
  void setReceiver(BrokerReceiver receiver)
  {
    _receiver = receiver;
  }
  
  
  //
  // disposition
  //

  @Override
  public void onAccepted(long xid, long mid)
  {
    _receiver.accepted(xid, mid);
  }
  
  @Override
  public void onReleased(long xid, long messageId)
  {
    _receiver.released(xid, messageId);
  }
  
  @Override
  public void onRejected(long xid, long messageId, AmqpError error)
  {
    _receiver.rejected(xid, messageId, error.getDescription());
  }
  
  @Override
  public void onModified(long xid,
                         long mid, 
                         boolean isFailed, 
                         boolean isUndeliverableHere)
  {
    _receiver.modified(xid, mid, isFailed, isUndeliverableHere);
  }
  
  //
  // flow control
  //

  /**
   * @param flow
   */
  @Override
  public void onFlow(FrameFlow flow)
  {
    super.onFlow(flow);
    
    _receiver.flow(flow.getDeliveryCount(), flow.getLinkCredit());
  }
  
  private class BrokerMessageReceiver implements ReceiverMessageHandler {
    /*
     * Receive a message from the broker, send it to the link.
     */
    @Override
    public void onMessage(long messageId, InputStream is, long contentLength)
      throws IOException
    {
      transfer(messageId, _settleMode, is);
    }
  }
}
