ChannelCloseMethodHandler.java

package org.openamq.client.handler;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.openamq.AMQChannelClosedException;
import org.openamq.AMQException;
import org.openamq.client.protocol.AMQConstant;
import org.openamq.client.protocol.AMQMethodEvent;
import org.openamq.client.state.AMQStateManager;
import org.openamq.client.state.StateAwareMethodListener;
import org.openamq.framing.AMQFrame;
import org.openamq.framing.ChannelCloseBody;
import org.openamq.framing.ChannelCloseOkBody;

public class ChannelCloseMethodHandler implements StateAwareMethodListener
{
    private static final Logger _logger = LoggerFactory.getLogger(ChannelCloseMethodHandler.class);

    private static ChannelCloseMethodHandler _handler = new ChannelCloseMethodHandler();

    public static ChannelCloseMethodHandler getInstance()
    {
        return _handler;
    }

    public void methodReceived(AMQStateManager stateManager, AMQMethodEvent evt) throws AMQException
    {
         _logger.debug("ChannelClose method received");
        ChannelCloseBody method = (ChannelCloseBody) evt.getMethod();

        int errorCode = method.replyCode;
        String reason = method.replyText;
        if (_logger.isDebugEnabled())
        {
            _logger.debug("Channel close reply code: " + errorCode + ", reason: " + reason);
        }

        AMQFrame frame = ChannelCloseOkBody.createAMQFrame(evt.getChannelId());
        evt.getProtocolSession().writeFrame(frame);
        if (errorCode != AMQConstant.REPLY_SUCCESS.getCode())
        {
            _logger.debug("Channel close received with errorCode " + errorCode + ", throwing exception");
            throw new AMQChannelClosedException(errorCode, "Error: " + reason);
        }
        evt.getProtocolSession().channelClosed(evt.getChannelId(), errorCode, reason);
    }
}