| /* |
| * |
| * 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.exchange; |
| |
| import org.apache.log4j.Logger; |
| |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.AMQSecurityException; |
| import org.apache.qpid.AMQUnknownExchangeType; |
| import org.apache.qpid.framing.AMQShortString; |
| import org.apache.qpid.qmf.ManagementExchange; |
| import org.apache.qpid.server.configuration.VirtualHostConfiguration; |
| import org.apache.qpid.server.registry.ApplicationRegistry; |
| import org.apache.qpid.server.virtualhost.VirtualHost; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class DefaultExchangeFactory implements ExchangeFactory |
| { |
| private static final Logger _logger = Logger.getLogger(DefaultExchangeFactory.class); |
| public static final String DEFAULT_DLE_NAME_SUFFIX = "_DLE"; |
| |
| private Map<AMQShortString, ExchangeType<? extends Exchange>> _exchangeClassMap = new HashMap<AMQShortString, ExchangeType<? extends Exchange>>(); |
| private final VirtualHost _host; |
| |
| public DefaultExchangeFactory(VirtualHost host) |
| { |
| _host = host; |
| registerExchangeType(DirectExchange.TYPE); |
| registerExchangeType(TopicExchange.TYPE); |
| registerExchangeType(HeadersExchange.TYPE); |
| registerExchangeType(FanoutExchange.TYPE); |
| registerExchangeType(ManagementExchange.TYPE); |
| } |
| |
| public void registerExchangeType(ExchangeType<? extends Exchange> type) |
| { |
| _exchangeClassMap.put(type.getName(), type); |
| } |
| |
| public Collection<ExchangeType<? extends Exchange>> getRegisteredTypes() |
| { |
| return _exchangeClassMap.values(); |
| } |
| |
| public Collection<ExchangeType<? extends Exchange>> getPublicCreatableTypes() |
| { |
| Collection<ExchangeType<? extends Exchange>> publicTypes = |
| new ArrayList<ExchangeType<? extends Exchange>>(); |
| publicTypes.addAll(_exchangeClassMap.values()); |
| |
| //Remove the ManagementExchange type if present, as these |
| //are private and cannot be created by external means |
| publicTypes.remove(ManagementExchange.TYPE); |
| |
| return publicTypes; |
| } |
| |
| |
| |
| public Exchange createExchange(String exchange, String type, boolean durable, boolean autoDelete) |
| throws AMQException |
| { |
| return createExchange(new AMQShortString(exchange), new AMQShortString(type), durable, autoDelete, 0); |
| } |
| |
| public Exchange createExchange(AMQShortString exchange, AMQShortString type, boolean durable, boolean autoDelete, |
| int ticket) |
| throws AMQException |
| { |
| // Check access |
| if (!_host.getSecurityManager().authoriseCreateExchange(autoDelete, durable, exchange, null, null, null, type)) |
| { |
| String description = "Permission denied: exchange-name '" + exchange.asString() + "'"; |
| throw new AMQSecurityException(description); |
| } |
| |
| ExchangeType<? extends Exchange> exchType = _exchangeClassMap.get(type); |
| if (exchType == null) |
| { |
| throw new AMQUnknownExchangeType("Unknown exchange type: " + type,null); |
| } |
| |
| Exchange e = exchType.newInstance(_host, exchange, durable, ticket, autoDelete); |
| return e; |
| } |
| |
| public void initialise(VirtualHostConfiguration hostConfig) |
| { |
| |
| if (hostConfig == null) |
| { |
| return; |
| } |
| |
| for(Object className : hostConfig.getCustomExchanges()) |
| { |
| try |
| { |
| ExchangeType<?> exchangeType = ApplicationRegistry.getInstance().getPluginManager().getExchanges().get(String.valueOf(className)); |
| if (exchangeType == null) |
| { |
| _logger.error("No such custom exchange class found: \""+String.valueOf(className)+"\""); |
| continue; |
| } |
| Class<? extends ExchangeType> exchangeTypeClass = exchangeType.getClass(); |
| ExchangeType<? extends ExchangeType> type = exchangeTypeClass.newInstance(); |
| registerExchangeType(type); |
| } |
| catch (ClassCastException classCastEx) |
| { |
| _logger.error("No custom exchange class: \""+String.valueOf(className)+"\" cannot be registered as it does not extend class \""+ExchangeType.class+"\""); |
| } |
| catch (IllegalAccessException e) |
| { |
| _logger.error("Cannot create custom exchange class: \""+String.valueOf(className)+"\"",e); |
| } |
| catch (InstantiationException e) |
| { |
| _logger.error("Cannot create custom exchange class: \""+String.valueOf(className)+"\"",e); |
| } |
| } |
| |
| } |
| } |