diff options
Diffstat (limited to 'java/java/cluster/src/org/apache/qpid/server/queue/RemoteQueueProxy.java')
-rw-r--r-- | java/java/cluster/src/org/apache/qpid/server/queue/RemoteQueueProxy.java | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/java/java/cluster/src/org/apache/qpid/server/queue/RemoteQueueProxy.java b/java/java/cluster/src/org/apache/qpid/server/queue/RemoteQueueProxy.java new file mode 100644 index 0000000000..752cf05a82 --- /dev/null +++ b/java/java/cluster/src/org/apache/qpid/server/queue/RemoteQueueProxy.java @@ -0,0 +1,109 @@ +/* + * + * 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.queue; + +import org.apache.log4j.Logger; +import org.apache.qpid.AMQException; +import org.apache.qpid.framing.AMQBody; +import org.apache.qpid.framing.BasicPublishBody; +import org.apache.qpid.framing.ContentBody; +import org.apache.qpid.framing.ContentHeaderBody; +import org.apache.qpid.server.cluster.ClusteredProtocolSession; +import org.apache.qpid.server.cluster.GroupManager; +import org.apache.qpid.server.cluster.util.LogMessage; +import org.apache.qpid.server.cluster.MemberHandle; +import org.apache.qpid.server.cluster.SimpleSendable; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.Executor; + +/** + * TODO: separate out an abstract base class from AMQQueue from which this inherits. It does + * not require all the functionality currently in AMQQueue. + * + */ +public class RemoteQueueProxy extends AMQQueue +{ + private static final Logger _logger = Logger.getLogger(RemoteQueueProxy.class); + private final MemberHandle _target; + private final GroupManager _groupMgr; + + public RemoteQueueProxy(MemberHandle target, GroupManager groupMgr, String name, boolean durable, String owner, boolean autoDelete, QueueRegistry queueRegistry) + throws AMQException + { + super(name, durable, owner, autoDelete, queueRegistry); + _target = target; + _groupMgr = groupMgr; + _groupMgr.addMemberhipChangeListener(new ProxiedQueueCleanup(target, this)); + } + + public RemoteQueueProxy(MemberHandle target, GroupManager groupMgr, String name, boolean durable, String owner, boolean autoDelete, QueueRegistry queueRegistry, Executor asyncDelivery) + throws AMQException + { + super(name, durable, owner, autoDelete, queueRegistry, asyncDelivery); + _target = target; + _groupMgr = groupMgr; + _groupMgr.addMemberhipChangeListener(new ProxiedQueueCleanup(target, this)); + } + + public void deliver(AMQMessage msg) throws NoConsumersException + { + if (ClusteredProtocolSession.canRelay(msg, _target)) + { + try + { + _logger.debug(new LogMessage("Relaying {0} to {1}", msg, _target)); + relay(msg); + } + catch (NoConsumersException e) + { + throw e; + } + catch (AMQException e) + { + //TODO: sort out exception handling... + e.printStackTrace(); + } + } + else + { + _logger.debug(new LogMessage("Cannot relay {0} to {1}", msg, _target)); + } + } + + void relay(AMQMessage msg) throws AMQException + { + BasicPublishBody publish = msg.getPublishBody(); + ContentHeaderBody header = msg.getContentHeaderBody(); + List<ContentBody> bodies = msg.getContentBodies(); + + //(i) construct a new publishing block: + publish.immediate = false;//can't as yet handle the immediate flag in a cluster + List<AMQBody> parts = new ArrayList<AMQBody>(2 + bodies.size()); + parts.add(publish); + parts.add(header); + parts.addAll(bodies); + + //(ii) send this on to the broker for which it is acting as proxy: + _groupMgr.send(_target, new SimpleSendable(parts)); + } +} |