/*
*
* 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.qpid.AMQException;
import org.apache.qpid.framing.ExchangeDeleteBody;
import org.apache.qpid.framing.ExchangeDeleteOkBody;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.protocol.v0_8.AMQChannel;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.exchange.ExchangeInUseException;
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;
import org.apache.qpid.server.virtualhost.ExchangeIsAlternateException;
import org.apache.qpid.server.virtualhost.RequiredExchangeException;
import org.apache.qpid.server.virtualhost.VirtualHost;
public class ExchangeDeleteHandler implements StateAwareMethodListener<ExchangeDeleteBody>
{
private static final ExchangeDeleteHandler _instance = new ExchangeDeleteHandler();
public static ExchangeDeleteHandler getInstance()
{
return _instance;
}
private ExchangeDeleteHandler()
{
}
public void methodReceived(AMQStateManager stateManager, ExchangeDeleteBody body, int channelId) throws AMQException
{
AMQProtocolSession session = stateManager.getProtocolSession();
VirtualHost virtualHost = session.getVirtualHost();
final AMQChannel channel = session.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
channel.sync();
try
{
final String exchangeName = body.getExchange() == null ? null : body.getExchange().toString();
final Exchange exchange = virtualHost.getExchange(exchangeName);
if(exchange == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "No such exchange: " + body.getExchange());
}
virtualHost.removeExchange(exchange, !body.getIfUnused());
ExchangeDeleteOkBody responseBody = session.getMethodRegistry().createExchangeDeleteOkBody();
session.writeFrame(responseBody.generateFrame(channelId));
}
catch (ExchangeInUseException e)
{
throw body.getChannelException(AMQConstant.IN_USE, "Exchange in use");
// TODO: sort out consistent channel close mechanism that does all clean up etc.
}
catch (ExchangeIsAlternateException e)
{
throw body.getChannelException(AMQConstant.NOT_ALLOWED, "Exchange in use as an alternate exchange");
}
catch (RequiredExchangeException e)
{
throw body.getChannelException(AMQConstant.NOT_ALLOWED, "Exchange '"+body.getExchange()+"' cannot be deleted");
}
}
}