1 files changed, 106 insertions, 0 deletions
diff --git a/qpid/java/management/client/src/main/java/org/apache/qpid/management/domain/handler/impl/MethodResponseMessageHandler.java b/qpid/java/management/client/src/main/java/org/apache/qpid/management/domain/handler/impl/MethodResponseMessageHandler.java
new file mode 100644
index 0000000000..9c99eb09aa
--- /dev/null
+++ b/qpid/java/management/client/src/main/java/org/apache/qpid/management/domain/handler/impl/MethodResponseMessageHandler.java
@@ -0,0 +1,106 @@
+/*
+ *
+ * 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.management.domain.handler.impl;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.BlockingQueue;
+
+import org.apache.qpid.management.Messages;
+import org.apache.qpid.management.domain.handler.base.BaseMessageHandler;
+import org.apache.qpid.management.domain.model.DomainModel;
+import org.apache.qpid.management.domain.model.InvocationEvent;
+import org.apache.qpid.transport.codec.Decoder;
+import org.apache.qpid.transport.util.Logger;
+
+/**
+ * Message handler for method response messages.
+ * This handler is installed on domain model as a method invocation result listener. 
+ * When a method is going to be invoked this listener is notified with the exchange channel that will be used between it and
+ * the event (method invocation) source object.
+ * 
+ * @author Andrea Gazzarini
+ *
+ */
+public class MethodResponseMessageHandler extends BaseMessageHandler
+{
+    private final static Logger LOGGER = Logger.get(MethodResponseMessageHandler.class);
+        
+    private Map<Integer, BlockingQueue<InvocationResult>> _exchangeChannels = new HashMap<Integer, BlockingQueue<InvocationResult>>();
+    
+    /**
+     * This is the listener installed on domain model for method invocations.
+     */
+    private final IMethodInvocationListener methodInvocationListener = new IMethodInvocationListener()
+    {
+        /**
+         * Event source callback. 
+         * A method is going to be invoked and this method lets this listener take the exchange channel that will be used
+         * with the event source for synchronous communication.
+         * 
+         * @param event the operation invocation event.
+         */
+        public void operationIsGoingToBeInvoked (InvocationEvent event)
+        {
+            _exchangeChannels.put(event.getSequenceNumber(), event.getExchangeChannel());
+        }        
+    };
+    
+    /**
+     * Processes the incoming message.
+     * 
+     * @param decoder the decoder used for parsing incoming data.
+     * @param sequenceNumber the sequence number of the incoming message.
+     */
+    public void process (Decoder decoder, int sequenceNumber)
+    {        
+        InvocationResult result = new InvocationResult(decoder.readUint32(), decoder.readStr16(),decoder.readReaminingBytes());
+        BlockingQueue<InvocationResult> exchangeChannel = _exchangeChannels.remove(sequenceNumber);
+        if (exchangeChannel != null)
+        {
+            try
+            {
+                exchangeChannel.put(result);
+            } catch (InterruptedException exception)
+            {
+                LOGGER.error(exception,Messages.QMAN_100010_METHOD_INVOCATION_RESULT_FAILURE,sequenceNumber);
+            }
+        } else 
+        {
+            LOGGER.warn(
+                    "Unable to deal with incoming message because it contains a unknown sequence number (%s).", 
+                    sequenceNumber);
+        }
+    }
+
+    /**
+     * Sets the domain model on this handler.
+     * In addiction, this handler registers a method invocation listener on the domain model.
+     * 
+     *  @param domainModel the managed broker domain model.
+     */
+    @Override
+    public void setDomainModel (DomainModel domainModel)
+    {
+        super.setDomainModel(domainModel);
+        domainModel.setMethodInvocationListener(methodInvocationListener);
+    }    
+}