1 files changed, 135 insertions, 0 deletions
diff --git a/java/java/cluster/src/org/apache/qpid/server/cluster/ClientHandlerRegistry.java b/java/java/cluster/src/org/apache/qpid/server/cluster/ClientHandlerRegistry.java
new file mode 100644
index 0000000000..c604709078
--- /dev/null
+++ b/java/java/cluster/src/org/apache/qpid/server/cluster/ClientHandlerRegistry.java
@@ -0,0 +1,135 @@
+/*
+ *
+ * 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.cluster;
+
+import org.apache.qpid.client.handler.ConnectionCloseMethodHandler;
+import org.apache.qpid.client.handler.ConnectionOpenOkMethodHandler;
+import org.apache.qpid.client.handler.ConnectionSecureMethodHandler;
+import org.apache.qpid.client.handler.ConnectionStartMethodHandler;
+import org.apache.qpid.client.handler.ConnectionTuneMethodHandler;
+import org.apache.qpid.client.state.AMQState;
+import org.apache.qpid.client.state.AMQStateManager;
+import org.apache.qpid.client.state.IllegalStateTransitionException;
+import org.apache.qpid.client.state.StateAwareMethodListener;
+import org.apache.qpid.framing.AMQFrame;
+import org.apache.qpid.framing.AMQMethodBody;
+import org.apache.qpid.framing.ConnectionCloseBody;
+import org.apache.qpid.framing.ConnectionOpenOkBody;
+import org.apache.qpid.framing.ConnectionSecureBody;
+import org.apache.qpid.framing.ConnectionStartBody;
+import org.apache.qpid.framing.ConnectionTuneBody;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * An extension of client.AMQStateManager that allows different handlers to be registered.
+ *
+ */
+public class ClientHandlerRegistry extends AMQStateManager
+{
+    private final Map<AMQState, ClientRegistry> _handlers = new HashMap<AMQState, ClientRegistry>();
+    private final MemberHandle _identity;
+
+    protected ClientHandlerRegistry(MemberHandle local)
+    {
+        super(AMQState.CONNECTION_NOT_STARTED, false);
+
+        _identity = local;
+
+        addHandler(ConnectionStartBody.class, ConnectionStartMethodHandler.getInstance(),
+                   AMQState.CONNECTION_NOT_STARTED);
+
+        addHandler(ConnectionTuneBody.class, new ConnectionTuneHandler(),
+                   AMQState.CONNECTION_NOT_TUNED);
+        addHandler(ConnectionSecureBody.class, ConnectionSecureMethodHandler.getInstance(),
+                   AMQState.CONNECTION_NOT_TUNED);
+        addHandler(ConnectionOpenOkBody.class, ConnectionOpenOkMethodHandler.getInstance(),
+                   AMQState.CONNECTION_NOT_OPENED);
+
+        addHandlers(ConnectionCloseBody.class, ConnectionCloseMethodHandler.getInstance(),
+                    AMQState.CONNECTION_NOT_STARTED,
+                    AMQState.CONNECTION_NOT_TUNED,
+                    AMQState.CONNECTION_NOT_OPENED);
+
+    }
+
+    private ClientRegistry state(AMQState state)
+    {
+        ClientRegistry registry = _handlers.get(state);
+        if (registry == null)
+        {
+            registry = new ClientRegistry();
+            _handlers.put(state, registry);
+        }
+        return registry;
+    }
+
+    protected StateAwareMethodListener findStateTransitionHandler(AMQState state, AMQMethodBody frame) throws IllegalStateTransitionException
+    {
+        ClientRegistry registry = _handlers.get(state);
+        return registry == null ? null : registry.getHandler(frame);
+    }
+
+
+    <A extends Class<AMQMethodBody>> void addHandlers(Class type, StateAwareMethodListener handler, AMQState... states)
+    {
+        for (AMQState state : states)
+        {
+            addHandler(type, handler, state);
+        }
+    }
+
+    <A extends Class<AMQMethodBody>> void addHandler(Class type, StateAwareMethodListener handler, AMQState state)
+    {
+        ClientRegistry registry = _handlers.get(state);
+        if (registry == null)
+        {
+            registry = new ClientRegistry();
+            _handlers.put(state, registry);
+        }
+        registry.add(type, handler);
+    }
+
+    static class ClientRegistry
+    {
+        private final Map<Class<? extends AMQMethodBody>, StateAwareMethodListener> registry
+                = new HashMap<Class<? extends AMQMethodBody>, StateAwareMethodListener>();
+
+        <A extends Class<AMQMethodBody>> void add(A type, StateAwareMethodListener handler)
+        {
+            registry.put(type, handler);
+        }
+
+        StateAwareMethodListener getHandler(AMQMethodBody frame)
+        {
+            return registry.get(frame.getClass());
+        }
+    }
+
+    class ConnectionTuneHandler extends ConnectionTuneMethodHandler
+    {
+        protected AMQFrame createConnectionOpenFrame(int channel, String path, String capabilities, boolean insist)
+        {
+            return super.createConnectionOpenFrame(channel, path, ClusterCapability.add(capabilities, _identity), insist);
+        }
+    }
+}