Updated message.transfer encoding to use header and content segments (including new structs).

Unified more between the basic and message classes messages.



git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@570538 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 139 insertions, 0 deletions

diff --git a/cpp/src/qpid/broker/Message.h b/cpp/src/qpid/broker/Message.h
new file mode 100644
index 0000000000..95b3f38b55
--- /dev/null
+++ b/cpp/src/qpid/broker/Message.h
@@ -0,0 +1,139 @@
+#ifndef _broker_Message_h
+#define _broker_Message_h
+
+/*
+ *
+ * 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 <string>
+#include <boost/shared_ptr.hpp>
+#include <boost/variant.hpp>
+#include "PersistableMessage.h"
+#include "MessageAdapter.h"
+#include "qpid/framing/amqp_types.h"
+
+namespace qpid {
+	
+namespace framing {
+class FieldTable;
+class SequenceNumber;
+}
+	
+namespace broker {
+class ConnectionToken;
+class Exchange;
+class ExchangeRegistry;
+class MessageStore;
+
+class Message : public PersistableMessage {
+public:
+    typedef boost::shared_ptr<Message> shared_ptr;
+
+    Message(const framing::SequenceNumber& id = framing::SequenceNumber());
+            
+    uint64_t getPersistenceId() const { return persistenceId; }
+    void setPersistenceId(uint64_t _persistenceId) const { persistenceId = _persistenceId; }
+
+    bool getRedelivered() const { return redelivered; }
+    void redeliver() { redelivered = true; }
+
+    const ConnectionToken* getPublisher() const {  return publisher; }
+    void setPublisher(ConnectionToken* p) {  publisher = p; }
+
+    uint64_t contentSize() const;
+
+    const std::string& getRoutingKey() const;
+    const boost::shared_ptr<Exchange> getExchange(ExchangeRegistry&) const;
+    const std::string& getExchangeName() const;
+    bool isImmediate() const;
+    const framing::FieldTable& getApplicationHeaders() const;
+    bool isPersistent();
+
+    framing::FrameSet& getFrames() { return frames; } 
+    const framing::FrameSet& getFrames() const { return frames; } 
+
+    template <class T> T* getProperties() {
+        return frames.getHeaders()->get<T>(true);
+    }
+
+    template <class T> const T* getProperties() const {
+        return frames.getHeaders()->get<T>();
+    }
+
+    template <class T> const T* getMethod() const {
+        return frames.as<T>();
+    }
+
+    template <class T> bool isA() const {
+        return frames.isA<T>();
+    }
+
+    uint32_t getRequiredCredit() const;
+
+    void encode(framing::Buffer& buffer) const;
+
+    /**
+     * @returns the size of the buffer needed to encode this
+     * message in its entirety
+     */
+    uint32_t encodedSize() const;
+    /**
+     * @returns the size of the buffer needed to encode the
+     * 'header' of this message (not just the header frame,
+     * but other meta data e.g.routing key and exchange)
+     */
+    uint32_t encodedHeaderSize() const;
+    uint32_t encodedContentSize() const;
+
+    void decodeHeader(framing::Buffer& buffer);
+    void decodeContent(framing::Buffer& buffer);
+            
+    /**
+     * Releases the in-memory content data held by this
+     * message. Must pass in a store from which the data can
+     * be reloaded.
+     */
+    void releaseContent(MessageStore* store);
+
+    void sendContent(framing::FrameHandler& out, uint16_t channel, uint16_t maxFrameSize);
+    void sendHeader(framing::FrameHandler& out, uint16_t channel, uint16_t maxFrameSize);
+
+    bool isContentLoaded() const;
+
+  private:
+    framing::FrameSet frames;
+    mutable boost::shared_ptr<Exchange> exchange;
+    mutable uint64_t persistenceId;
+    bool redelivered;
+    ConnectionToken* publisher;
+    MessageStore* store;
+    mutable MessageAdapter* adapter;
+
+    static TransferAdapter TRANSFER;
+    static PublishAdapter PUBLISH;
+
+    MessageAdapter& getAdapter() const;
+    bool isContentReleased() { return store; } 
+};
+
+}}
+
+
+#endif