| /* |
| * |
| * 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 |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.server.handler; |
| |
| import org.apache.log4j.Logger; |
| |
| import org.apache.qpid.AMQConnectionException; |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.AMQUnknownExchangeType; |
| import org.apache.qpid.framing.AMQMethodBody; |
| import org.apache.qpid.framing.AMQShortString; |
| import org.apache.qpid.framing.ExchangeDeclareBody; |
| import org.apache.qpid.framing.MethodRegistry; |
| import org.apache.qpid.protocol.AMQConstant; |
| import org.apache.qpid.server.AMQChannel; |
| import org.apache.qpid.server.exchange.Exchange; |
| import org.apache.qpid.server.exchange.ExchangeFactory; |
| import org.apache.qpid.server.exchange.ExchangeRegistry; |
| import org.apache.qpid.server.protocol.AMQProtocolSession; |
| import org.apache.qpid.server.state.AMQStateManager; |
| import org.apache.qpid.server.state.StateAwareMethodListener; |
| import org.apache.qpid.server.virtualhost.VirtualHost; |
| |
| public class ExchangeDeclareHandler implements StateAwareMethodListener<ExchangeDeclareBody> |
| { |
| private static final Logger _logger = Logger.getLogger(ExchangeDeclareHandler.class); |
| |
| private static final ExchangeDeclareHandler _instance = new ExchangeDeclareHandler(); |
| |
| public static ExchangeDeclareHandler getInstance() |
| { |
| return _instance; |
| } |
| |
| private ExchangeDeclareHandler() |
| { |
| } |
| |
| public void methodReceived(AMQStateManager stateManager, ExchangeDeclareBody body, int channelId) throws AMQException |
| { |
| AMQProtocolSession session = stateManager.getProtocolSession(); |
| VirtualHost virtualHost = session.getVirtualHost(); |
| ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry(); |
| ExchangeFactory exchangeFactory = virtualHost.getExchangeFactory(); |
| final AMQChannel channel = session.getChannel(channelId); |
| if (channel == null) |
| { |
| throw body.getChannelNotFoundException(channelId); |
| } |
| |
| final AMQShortString exchangeName = body.getExchange(); |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Request to declare exchange of type " + body.getType() + " with name " + exchangeName); |
| } |
| |
| synchronized(exchangeRegistry) |
| { |
| Exchange exchange = exchangeRegistry.getExchange(exchangeName); |
| |
| if (exchange == null) |
| { |
| if(body.getPassive() && ((body.getType() == null) || body.getType().length() ==0)) |
| { |
| throw body.getChannelException(AMQConstant.NOT_FOUND, "Unknown exchange: " + exchangeName); |
| } |
| else if(exchangeName.startsWith("amq.")) |
| { |
| throw body.getConnectionException(AMQConstant.NOT_ALLOWED, |
| "Attempt to declare exchange: " + exchangeName + |
| " which begins with reserved prefix 'amq.'."); |
| } |
| else if(exchangeName.startsWith("qpid.")) |
| { |
| throw body.getConnectionException(AMQConstant.NOT_ALLOWED, |
| "Attempt to declare exchange: " + exchangeName + |
| " which begins with reserved prefix 'qpid.'."); |
| } |
| else |
| { |
| try |
| { |
| exchange = exchangeFactory.createExchange(exchangeName == null ? null : exchangeName.intern(), |
| body.getType() == null ? null : body.getType().intern(), |
| body.getDurable(), |
| body.getAutoDelete(), body.getTicket()); |
| exchangeRegistry.registerExchange(exchange); |
| |
| if (exchange.isDurable()) |
| { |
| virtualHost.getMessageStore().createExchange(exchange); |
| } |
| } |
| catch(AMQUnknownExchangeType e) |
| { |
| throw body.getConnectionException(AMQConstant.COMMAND_INVALID, "Unknown exchange: " + exchangeName,e); |
| } |
| } |
| } |
| else if (!exchange.getTypeShortString().equals(body.getType()) && !((body.getType() == null || body.getType().length() ==0) && body.getPassive())) |
| { |
| |
| throw new AMQConnectionException(AMQConstant.NOT_ALLOWED, "Attempt to redeclare exchange: " + |
| exchangeName + " of type " + exchange.getTypeShortString() + " to " + body.getType() +".",body.getClazz(), body.getMethod(),body.getMajor(),body.getMinor(),null); |
| } |
| } |
| if(!body.getNowait()) |
| { |
| MethodRegistry methodRegistry = session.getMethodRegistry(); |
| AMQMethodBody responseBody = methodRegistry.createExchangeDeclareOkBody(); |
| channel.sync(); |
| session.writeFrame(responseBody.generateFrame(channelId)); |
| } |
| } |
| } |