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, 47 insertions, 38 deletions

diff --git a/cpp/src/qpid/broker/MessageBuilder.cpp b/cpp/src/qpid/broker/MessageBuilder.cpp
index f19927b708..1a84aa9b65 100644
--- a/cpp/src/qpid/broker/MessageBuilder.cpp
+++ b/cpp/src/qpid/broker/MessageBuilder.cpp
@@ -20,55 +20,64 @@
  */
 #include "MessageBuilder.h"
 
-#include "InMemoryContent.h"
-#include "LazyLoadedContent.h"
+#include "Message.h"
+#include "MessageStore.h"
+#include "qpid/Exception.h"
+#include "qpid/framing/AMQFrame.h"
 
 using namespace qpid::broker;
 using namespace qpid::framing;
-using std::auto_ptr;
 
-MessageBuilder::MessageBuilder(CompletionHandler* _handler,
-                               MessageStore* const _store,
-                               uint64_t _stagingThreshold
-) : 
-    handler(_handler),
-    store(_store),
-    stagingThreshold(_stagingThreshold)
-{}
+MessageBuilder::MessageBuilder(MessageStore* const _store, uint64_t _stagingThreshold) : 
+    state(DORMANT), store(_store), stagingThreshold(_stagingThreshold), staging(false) {}
 
-void MessageBuilder::route(){
-    if (message->isComplete()) {
-        if (handler) handler->complete(message);
-        message.reset();
+void MessageBuilder::handle(AMQFrame& frame)
+{
+    switch(state) {
+    case METHOD:
+        checkType(METHOD_BODY, frame.getBody()->type());
+        state = HEADER;
+        break;
+    case HEADER:
+        checkType(HEADER_BODY, frame.getBody()->type());
+        state = CONTENT;
+        break;
+    case CONTENT:
+        checkType(CONTENT_BODY, frame.getBody()->type());
+        break;
+    default:
+        throw ConnectionException(504, "Invalid frame sequence for message.");        
+    }
+    if (staging) {
+        store->appendContent(*message, frame.castBody<AMQContentBody>()->getData());
+    } else {
+        message->getFrames().append(frame);
+        //have we reached the staging limit? if so stage message and release content
+        if (state == CONTENT && stagingThreshold && message->getFrames().getContentSize() >= stagingThreshold) {
+            store->stage(*message);
+            message->releaseContent(store);
+            staging = true;
+        }
     }
 }
 
-void MessageBuilder::initialise(Message::shared_ptr& msg){
-    if(message.get()){
-        THROW_QPID_ERROR(PROTOCOL_ERROR + 504, "Invalid message sequence: got publish before previous content was completed.");
+void MessageBuilder::checkType(uint8_t expected, uint8_t actual)
+{
+    if (expected != actual) {
+        throw ConnectionException(504, "Invalid frame sequence for message.");
     }
-    message = msg;
 }
 
-void MessageBuilder::setHeader(AMQHeaderBody* header){
-    if(!message.get()){
-        THROW_QPID_ERROR(PROTOCOL_ERROR + 504, "Invalid message sequence: got header before publish.");
-    }
-    message->setHeader(header);
-    if (stagingThreshold && header->getContentSize() >= stagingThreshold) {
-        store->stage(*message);
-        message->releaseContent(store);
-    } else {
-        auto_ptr<Content> content(new InMemoryContent());
-        message->setContent(content);
-    }
-    route();
+void MessageBuilder::end()
+{
+    message.reset();
+    state = DORMANT;
+    staging = false;
 }
 
-void MessageBuilder::addContent(AMQContentBody* content){
-    if(!message.get()){
-        THROW_QPID_ERROR(PROTOCOL_ERROR + 504, "Invalid message sequence: got content before publish.");
-    }
-    message->addContent(content);
-    route();
+void MessageBuilder::start(const SequenceNumber& id)
+{
+    message = Message::shared_ptr(new Message(id));
+    state = METHOD;
+    staging = false;
 }