/*
*
* 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
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package org.apache.qpid.server.protocol.v0_8.handler;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQMethodBody;
import org.apache.qpid.framing.ChannelFlowBody;
import org.apache.qpid.framing.MethodRegistry;
import org.apache.qpid.server.protocol.v0_8.AMQChannel;
import org.apache.qpid.server.protocol.v0_8.AMQProtocolSession;
import org.apache.qpid.server.protocol.v0_8.state.AMQStateManager;
import org.apache.qpid.server.protocol.v0_8.state.StateAwareMethodListener;
public class ChannelFlowHandler implements StateAwareMethodListener<ChannelFlowBody>
{
private static final Logger _logger = Logger.getLogger(ChannelFlowHandler.class);
private static ChannelFlowHandler _instance = new ChannelFlowHandler();
public static ChannelFlowHandler getInstance()
{
return _instance;
}
private ChannelFlowHandler()
{
}
public void methodReceived(AMQStateManager stateManager, ChannelFlowBody body, int channelId) throws AMQException
{
AMQProtocolSession session = stateManager.getProtocolSession();
AMQChannel channel = session.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
channel.sync();
channel.setSuspended(!body.getActive());
_logger.debug("Channel.Flow for channel " + channelId + ", active=" + body.getActive());
MethodRegistry methodRegistry = session.getMethodRegistry();
AMQMethodBody responseBody = methodRegistry.createChannelFlowOkBody(body.getActive());
session.writeFrame(responseBody.generateFrame(channelId));
}
}