1 files changed, 132 insertions, 0 deletions
diff --git a/java/cluster/src/main/java/org/apache/qpid/server/cluster/ClusteredProtocolSession.java b/java/cluster/src/main/java/org/apache/qpid/server/cluster/ClusteredProtocolSession.java
new file mode 100644
index 0000000000..e5efe941b3
--- /dev/null
+++ b/java/cluster/src/main/java/org/apache/qpid/server/cluster/ClusteredProtocolSession.java
@@ -0,0 +1,132 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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.cluster;
+
+import org.apache.mina.common.IoSession;
+import org.apache.qpid.AMQException;
+import org.apache.qpid.codec.AMQCodecFactory;
+import org.apache.qpid.server.AMQChannel;
+import org.apache.qpid.server.exchange.ExchangeRegistry;
+import org.apache.qpid.server.protocol.AMQMinaProtocolSession;
+import org.apache.qpid.server.protocol.AMQProtocolSession;
+import org.apache.qpid.server.queue.AMQMessage;
+import org.apache.qpid.server.queue.QueueRegistry;
+import org.apache.qpid.server.registry.ApplicationRegistry;
+import org.apache.qpid.server.registry.IApplicationRegistry;
+import org.apache.qpid.server.state.AMQStateManager;
+
+public class ClusteredProtocolSession extends AMQMinaProtocolSession
+{
+    private MemberHandle _peer;
+
+    public ClusteredProtocolSession(IoSession session, QueueRegistry queueRegistry, ExchangeRegistry exchangeRegistry, AMQCodecFactory codecFactory, AMQStateManager stateManager)
+            throws AMQException
+    {
+        super(session, queueRegistry, exchangeRegistry, codecFactory, stateManager);
+    }
+
+    public boolean isPeerSession()
+    {
+        return _peer != null;
+    }
+
+    public void setSessionPeer(MemberHandle peer)
+    {
+        _peer = peer;
+    }
+
+    public MemberHandle getSessionPeer()
+    {
+        return _peer;
+    }
+
+    public AMQChannel getChannel(int channelId)
+        throws AMQException
+    {
+        AMQChannel channel = super.getChannel(channelId);
+        if (isPeerSession() && channel == null)
+        {
+            channel = new OneUseChannel(channelId);
+            addChannel(channel);
+        }
+        return channel;
+    }
+
+    public static boolean isPeerSession(IoSession session)
+    {
+        return isPeerSession(getAMQProtocolSession(session));
+    }
+
+    public static boolean isPeerSession(AMQProtocolSession session)
+    {
+        return session instanceof ClusteredProtocolSession && ((ClusteredProtocolSession) session).isPeerSession();
+    }
+
+    public static void setSessionPeer(AMQProtocolSession session, MemberHandle peer)
+    {
+        ((ClusteredProtocolSession) session).setSessionPeer(peer);
+    }
+
+    public static MemberHandle getSessionPeer(AMQProtocolSession session)
+    {
+        return ((ClusteredProtocolSession) session).getSessionPeer();
+    }
+
+    public static MemberHandle getSessionPeer(IoSession session)
+    {
+        return getSessionPeer(getAMQProtocolSession(session));
+    }
+
+    /**
+     * Cleans itself up after delivery of a message (publish frame, header and optional body frame(s))
+     */
+    private class OneUseChannel extends AMQChannel
+    {
+        public OneUseChannel(int channelId)
+            throws AMQException
+        {
+            this(channelId, ApplicationRegistry.getInstance());
+        }
+
+        public OneUseChannel(int channelId, IApplicationRegistry registry)
+            throws AMQException
+        {
+            super(channelId,
+                  registry.getMessageStore(),
+                  registry.getExchangeRegistry());
+        }
+
+        protected void routeCurrentMessage() throws AMQException
+        {
+            super.routeCurrentMessage();
+            removeChannel(getChannelId());
+        }
+    }
+
+    public static boolean isPayloadFromPeer(AMQMessage payload)
+    {
+        return isPeerSession(payload.getPublisher());
+    }
+
+    public static boolean canRelay(AMQMessage payload, MemberHandle target)
+    {
+        //can only relay client messages that have not already been relayed to the given target
+        return !isPayloadFromPeer(payload) && !payload.checkToken(target);
+    }
+
+}