1 files changed, 90 insertions, 0 deletions
diff --git a/cpp/lib/common/framing/ChannelAdapter.h b/cpp/lib/common/framing/ChannelAdapter.h
new file mode 100644
index 0000000000..0652cc41bb
--- /dev/null
+++ b/cpp/lib/common/framing/ChannelAdapter.h
@@ -0,0 +1,90 @@
+#ifndef _ChannelAdapter_
+#define _ChannelAdapter_
+
+/*
+ *
+ * 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.
+ *
+ */
+
+#include <boost/shared_ptr.hpp>
+
+#include "BodyHandler.h"
+#include "Requester.h"
+#include "Responder.h"
+#include "OutputHandler.h"
+
+namespace qpid {
+namespace framing {
+
+class MethodContext;
+
+/**
+ * Base class for client and broker channel adapters.
+ *
+ * As BodyHandler:
+ * - Creates MethodContext and dispatches methods+context to derived class.
+ * - Updates request/response ID data.
+ *
+ * As OutputHandler:
+ * - Updates request/resposne ID data.
+ * 
+ */
+class ChannelAdapter : public BodyHandler, public OutputHandler {
+  public:
+    /**
+     *@param output Processed frames are forwarded to this handler.
+     */
+    ChannelAdapter(OutputHandler& output, ChannelId channelId) 
+        : id(channelId), out(output) {}
+
+    ChannelId getId() { return id; }
+    
+    /**
+     * Do request/response-id processing and then forward to
+     * handler provided to constructor. Response frames should
+     * have their request-id set before calling send.
+     */
+    void send(AMQFrame* frame);
+
+    void handleMethod(boost::shared_ptr<qpid::framing::AMQMethodBody>);
+    void handleRequest(boost::shared_ptr<qpid::framing::AMQRequestBody>);
+    void handleResponse(boost::shared_ptr<qpid::framing::AMQResponseBody>);
+
+  protected:
+    /** Throw protocol exception if this is not channel 0. */
+    static void assertChannelZero(u_int16_t id);
+    /** Throw protocol exception if this is channel 0. */
+    static void assertChannelNonZero(u_int16_t id);
+
+    virtual void handleMethodInContext(
+        boost::shared_ptr<qpid::framing::AMQMethodBody> method,
+        const MethodContext& context) = 0;
+
+    ChannelId id;
+
+  private:
+    Requester requester;
+    Responder responder;
+    OutputHandler& out;
+};
+
+}}
+
+
+#endif