1 files changed, 146 insertions, 0 deletions
diff --git a/qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/DefaultExchangeFactory.java b/qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/DefaultExchangeFactory.java
new file mode 100644
index 0000000000..7837a9bc38
--- /dev/null
+++ b/qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/DefaultExchangeFactory.java
@@ -0,0 +1,146 @@
+/*
+ *
+ * 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 java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.log4j.Logger;
+import org.apache.qpid.AMQConnectionException;
+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.protocol.AMQConstant;
+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;
+
+public class DefaultExchangeFactory implements ExchangeFactory
+{
+    private static final Logger _logger = Logger.getLogger(DefaultExchangeFactory.class);
+
+    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)+"\"");
+                    return;
+                }
+                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);
+            }
+        }
+
+    }
+}