Build system reorg, see README and Makefile comments for details.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@464494 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 256 insertions, 0 deletions

diff --git a/cpp/src/qpid/broker/Channel.cpp b/cpp/src/qpid/broker/Channel.cpp
new file mode 100644
index 0000000000..8d1cce9f1b
--- /dev/null
+++ b/cpp/src/qpid/broker/Channel.cpp
@@ -0,0 +1,256 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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 "./qpid/broker/Channel.h"
+#include "./qpid/QpidError.h"
+#include <iostream>
+#include <sstream>
+#include <assert.h>
+
+using namespace qpid::broker;
+using namespace qpid::framing;
+using namespace qpid::concurrent;
+
+
+Channel::Channel(OutputHandler* _out, int _id, u_int32_t _framesize) :
+    id(_id), 
+    out(_out), 
+    deliveryTag(1),
+    transactional(false),
+    prefetchSize(0),
+    prefetchCount(0),
+    outstandingSize(0),
+    outstandingCount(0),
+    framesize(_framesize),
+    tagGenerator("sgen"){}
+
+Channel::~Channel(){
+}
+
+bool Channel::exists(const string& consumerTag){
+    return consumers.find(consumerTag) != consumers.end();
+}
+
+void Channel::consume(string& tag, Queue::shared_ptr queue, bool acks, bool exclusive, ConnectionToken* const connection){
+    if(tag.empty()) tag = tagGenerator.generate();
+
+    ConsumerImpl* c(new ConsumerImpl(this, tag, queue, connection, acks));
+    try{
+        queue->consume(c, exclusive);//may throw exception
+        consumers[tag] = c;
+    }catch(ExclusiveAccessException& e){
+        delete c;
+        throw e;
+    }
+}
+
+void Channel::cancel(consumer_iterator i){
+    ConsumerImpl* c = i->second;
+    consumers.erase(i);
+    if(c){
+        c->cancel();
+        delete c;
+    }
+}
+
+void Channel::cancel(const string& tag){
+    consumer_iterator i = consumers.find(tag);
+    if(i != consumers.end()){
+        cancel(i);
+    }
+}
+
+void Channel::close(){
+    //cancel all consumers
+    for(consumer_iterator i = consumers.begin(); i != consumers.end(); i = consumers.begin() ){
+        cancel(i);
+    }
+}
+
+void Channel::begin(){
+    transactional = true;
+}
+
+void Channel::commit(){
+
+}
+
+void Channel::rollback(){
+
+}
+
+void Channel::deliver(Message::shared_ptr& msg, string& consumerTag, Queue::shared_ptr& queue, bool ackExpected){
+    Locker locker(deliveryLock);
+
+    u_int64_t myDeliveryTag = deliveryTag++;
+    if(ackExpected){
+        unacknowledged.push_back(AckRecord(msg, queue, consumerTag, myDeliveryTag));
+        outstandingSize += msg->contentSize();
+        outstandingCount++;
+    }
+    //send deliver method, header and content(s)
+    msg->deliver(out, id, consumerTag, myDeliveryTag, framesize);
+}
+
+bool Channel::checkPrefetch(Message::shared_ptr& msg){
+    Locker locker(deliveryLock);
+    bool countOk = !prefetchCount || prefetchCount > unacknowledged.size();
+    bool sizeOk = !prefetchSize || prefetchSize > msg->contentSize() + outstandingSize || unacknowledged.empty();
+    return countOk && sizeOk;
+}
+
+Channel::ConsumerImpl::ConsumerImpl(Channel* _parent, string& _tag, 
+                                    Queue::shared_ptr _queue, 
+                                    ConnectionToken* const _connection, bool ack) : parent(_parent), 
+                                                                                    tag(_tag), 
+                                                                                    queue(_queue),
+                                                                                    connection(_connection),
+                                                                                    ackExpected(ack), 
+                                                                                    blocked(false){
+}
+
+bool Channel::ConsumerImpl::deliver(Message::shared_ptr& msg){
+    if(!connection || connection != msg->getPublisher()){//check for no_local
+        if(ackExpected && !parent->checkPrefetch(msg)){
+            blocked = true;
+        }else{
+            blocked = false;
+            parent->deliver(msg, tag, queue, ackExpected);
+            return true;
+        }
+    }
+    return false;
+}
+
+void Channel::ConsumerImpl::cancel(){
+    if(queue) queue->cancel(this);
+}
+
+void Channel::ConsumerImpl::requestDispatch(){
+    if(blocked) queue->dispatch();
+}
+
+void Channel::checkMessage(const std::string& text){
+    if(!message.get()){
+        THROW_QPID_ERROR(PROTOCOL_ERROR + 504, text);
+    }
+}
+
+void Channel::handlePublish(Message* msg){
+    if(message.get()){
+        THROW_QPID_ERROR(PROTOCOL_ERROR + 504, "Invalid message sequence: got publish before previous content was completed.");
+    }
+    message = Message::shared_ptr(msg);
+}
+
+void Channel::ack(u_int64_t _deliveryTag, bool multiple){
+    Locker locker(deliveryLock);//need to synchronize with possible concurrent delivery
+    
+    ack_iterator i = find_if(unacknowledged.begin(), unacknowledged.end(), MatchAck(_deliveryTag));
+    if(i == unacknowledged.end()){
+        throw InvalidAckException();
+    }else if(multiple){        
+        unacknowledged.erase(unacknowledged.begin(), ++i);
+        //recompute prefetch outstanding (note: messages delivered through get are ignored)
+        CalculatePrefetch calc(for_each(unacknowledged.begin(), unacknowledged.end(), CalculatePrefetch()));
+        outstandingSize = calc.getSize();
+        outstandingCount = calc.getCount();
+    }else{
+        if(!i->pull){
+            outstandingSize -= i->msg->contentSize();
+            outstandingCount--;
+        }
+        unacknowledged.erase(i);        
+    }
+
+    //if the prefetch limit had previously been reached, there may
+    //be messages that can be now be delivered
+    for(consumer_iterator j = consumers.begin(); j != consumers.end(); j++){
+        j->second->requestDispatch();
+    }
+}
+
+void Channel::recover(bool requeue){
+    Locker locker(deliveryLock);//need to synchronize with possible concurrent delivery
+
+    if(requeue){
+        outstandingSize = 0;
+        outstandingCount = 0;
+        ack_iterator start(unacknowledged.begin());
+        ack_iterator end(unacknowledged.end());
+        for_each(start, end, Requeue());
+        unacknowledged.erase(start, end);
+    }else{
+        for_each(unacknowledged.begin(), unacknowledged.end(), Redeliver(this));        
+    }
+}
+
+bool Channel::get(Queue::shared_ptr queue, bool ackExpected){
+    Message::shared_ptr msg = queue->dequeue();
+    if(msg){
+        Locker locker(deliveryLock);
+        u_int64_t myDeliveryTag = deliveryTag++;
+        msg->sendGetOk(out, id, queue->getMessageCount() + 1, myDeliveryTag, framesize);
+        if(ackExpected){
+            unacknowledged.push_back(AckRecord(msg, queue, myDeliveryTag));
+        }
+        return true;
+    }else{
+        return false;
+    }
+}
+
+Channel::MatchAck::MatchAck(u_int64_t _tag) : tag(_tag) {}
+
+bool Channel::MatchAck::operator()(AckRecord& record) const{
+    return tag == record.deliveryTag;
+}
+
+void Channel::Requeue::operator()(AckRecord& record) const{
+    record.msg->redeliver();
+    record.queue->deliver(record.msg);
+}
+
+Channel::Redeliver::Redeliver(Channel* const _channel) : channel(_channel) {}
+
+void Channel::Redeliver::operator()(AckRecord& record) const{
+    if(record.pull){
+        //if message was originally sent as response to get, we must requeue it
+        record.msg->redeliver();
+        record.queue->deliver(record.msg);
+    }else{
+        record.msg->deliver(channel->out, channel->id, record.consumerTag, record.deliveryTag, channel->framesize);
+    }
+}
+
+Channel::CalculatePrefetch::CalculatePrefetch() : size(0){}
+
+void Channel::CalculatePrefetch::operator()(AckRecord& record){
+    if(!record.pull){
+        //ignore messages that were sent in response to get when calculating prefetch
+        size += record.msg->contentSize();
+        count++;
+    }
+}
+
+u_int32_t Channel::CalculatePrefetch::getSize(){
+    return size;
+}
+
+u_int16_t Channel::CalculatePrefetch::getCount(){
+    return count;
+}