Renamed the following files for consistency:

broker/BrokerExchange.cpp -> Exchange.cpp
broker/BrokerExchange.h -> Exchange.h
broker/BrokerQueue.cpp -> Queue.cpp
broker/BrokerQueue.h -> Queue.h
client/ClientChannel.cpp -> Channel.cpp
client/ClientChannel.h -> Channel.h
client/ClientConnection.cpp -> Connection.cpp
client/ClientExchange.cpp -> Exchange.cpp
client/ClientExchange.h -> Exchange.h
client/ClientMessage.h -> Message.h
client/ClientQueue.cpp -> Queue.cpp
client/ClientQueue.h -> Queue.h


git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@579340 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 271 insertions, 0 deletions

diff --git a/cpp/src/qpid/client/Channel.cpp b/cpp/src/qpid/client/Channel.cpp
new file mode 100644
index 0000000000..cef34630db
--- /dev/null
+++ b/cpp/src/qpid/client/Channel.cpp
@@ -0,0 +1,271 @@
+/*
+ *
+ * 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 "qpid/log/Statement.h"
+#include <iostream>
+#include <sstream>
+#include "Channel.h"
+#include "qpid/sys/Monitor.h"
+#include "Message.h"
+#include "qpid/QpidError.h"
+#include "Connection.h"
+#include "Demux.h"
+#include "FutureResponse.h"
+#include "MessageListener.h"
+#include "MessageQueue.h"
+#include <boost/format.hpp>
+#include <boost/bind.hpp>
+#include "qpid/framing/all_method_bodies.h"
+
+// FIXME aconway 2007-01-26: Evaluate all throws, ensure consistent
+// handling of errors that should close the connection or the channel.
+// Make sure the user thread receives a connection in each case.
+//
+using namespace std;
+using namespace boost;
+using namespace qpid::framing;
+using namespace qpid::sys;
+
+namespace qpid{
+namespace client{
+
+const std::string empty;
+
+class ScopedSync
+{
+    Session& session;
+  public:
+    ScopedSync(Session& s, bool enabled = true) : session(s) { session.setSynchronous(enabled); }
+    ~ScopedSync() { session.setSynchronous(false); }
+};
+
+Channel::Channel(bool _transactional, u_int16_t _prefetch) :
+    prefetch(_prefetch), transactional(_transactional), running(false), 
+    uniqueId(true)/*could eventually be the session id*/, nameCounter(0), active(false)
+{
+}
+
+Channel::~Channel()
+{
+    join();
+}
+
+void Channel::open(const Session& s)
+{
+    Mutex::ScopedLock l(stopLock);
+    if (isOpen())
+        THROW_QPID_ERROR(INTERNAL_ERROR, "Attempt to re-open channel");
+    active = true;
+    session = s;
+    if(isTransactional()) {
+        session.txSelect();
+    }
+}
+    
+bool Channel::isOpen() const { 
+    Mutex::ScopedLock l(stopLock);
+    return active; 
+}
+
+void Channel::setPrefetch(uint32_t _prefetch){
+    prefetch = _prefetch;
+}
+
+void Channel::declareExchange(Exchange& _exchange, bool synch){
+    ScopedSync s(session, synch);
+    session.exchangeDeclare_(exchange=_exchange.getName(), type=_exchange.getType());
+}
+
+void Channel::deleteExchange(Exchange& _exchange, bool synch){
+    ScopedSync s(session, synch);
+    session.exchangeDelete_(exchange=_exchange.getName(), ifUnused=false);
+}
+
+void Channel::declareQueue(Queue& _queue, bool synch){
+    if (_queue.getName().empty()) {
+        stringstream uniqueName;
+        uniqueName << uniqueId << "-queue-" << ++nameCounter;
+        _queue.setName(uniqueName.str());
+    }
+
+    ScopedSync s(session, synch);
+    session.queueDeclare_(queue=_queue.getName(), passive=false/*passive*/, durable=_queue.isDurable(),
+                              exclusive=_queue.isExclusive(), autoDelete=_queue.isAutoDelete());
+    
+}
+
+void Channel::deleteQueue(Queue& _queue, bool ifunused, bool ifempty, bool synch){
+    ScopedSync s(session, synch);
+    session.queueDelete_(queue=_queue.getName(), ifUnused=ifunused, ifEmpty=ifempty);
+}
+
+void Channel::bind(const Exchange& exchange, const Queue& queue, const std::string& key, const FieldTable& args, bool synch){
+    string e = exchange.getName();
+    string q = queue.getName();
+    ScopedSync s(session, synch);
+    session.queueBind(0, q, e, key, args);
+}
+
+void Channel::commit(){
+    session.txCommit();
+}
+
+void Channel::rollback(){
+    session.txRollback();
+}
+
+void Channel::consume(
+    Queue& _queue, const std::string& tag, MessageListener* listener, 
+    AckMode ackMode, bool noLocal, bool synch, const FieldTable* fields) {
+
+    if (tag.empty()) {
+        throw Exception("A tag must be specified for a consumer."); 
+    }
+    {
+        Mutex::ScopedLock l(lock);
+        ConsumerMap::iterator i = consumers.find(tag);
+        if (i != consumers.end())
+            throw Exception(boost::format("Consumer already exists with tag: '%1%'") % tag);
+        Consumer& c = consumers[tag];
+        c.listener = listener;
+        c.ackMode = ackMode;
+        c.count = 0;
+    }
+    uint8_t confirmMode = ackMode == NO_ACK ? 0 : 1;
+    ScopedSync s(session, synch);
+    session.messageSubscribe(0, _queue.getName(), tag, noLocal, 
+                             confirmMode, 0/*pre-acquire*/, 
+                             false, fields ? *fields : FieldTable());
+    if (!prefetch) {
+        session.messageFlowMode(tag, 0/*credit based*/);
+    }
+
+    //allocate some credit:
+    session.messageFlow(tag, 1/*BYTES*/, 0xFFFFFFFF);
+    session.messageFlow(tag, 0/*MESSAGES*/, prefetch ? prefetch : 0xFFFFFFFF);
+}
+        
+void Channel::cancel(const std::string& tag, bool synch) {
+    Consumer c;
+    {
+        Mutex::ScopedLock l(lock);
+        ConsumerMap::iterator i = consumers.find(tag);
+        if (i == consumers.end())
+            return;
+        c = i->second;
+        consumers.erase(i);
+    }
+    ScopedSync s(session, synch);
+    session.messageCancel(tag);
+}
+
+bool Channel::get(Message& msg, const Queue& _queue, AckMode ackMode) {
+    string tag = "get-handler";
+    ScopedDivert handler(tag, session.execution().getDemux());
+    Demux::Queue& incoming = handler.getQueue();
+
+    session.messageSubscribe_(destination=tag, queue=_queue.getName(), confirmMode=(ackMode == NO_ACK ? 0 : 1));
+    session.messageFlow(tag, 1/*BYTES*/, 0xFFFFFFFF);
+    session.messageFlow(tag, 0/*MESSAGES*/, 1);
+    Completion status = session.messageFlush(tag);
+    status.sync();
+    session.messageCancel(tag);
+
+    if (incoming.empty()) {
+        return false;
+    } else {
+        msg.populate(*(incoming.pop()));
+        if (ackMode == AUTO_ACK) msg.acknowledge(session, false, true);
+        return true;
+    }
+}
+
+void Channel::publish(Message& msg, const Exchange& exchange,
+                      const std::string& routingKey, 
+                      bool mandatory, bool /*?TODO-restore immediate?*/) {
+
+    msg.getDeliveryProperties().setRoutingKey(routingKey);
+    msg.getDeliveryProperties().setDiscardUnroutable(!mandatory);
+    session.messageTransfer_(destination=exchange.getName(), content=msg);
+}
+
+void Channel::close()
+{
+    session.close();
+    {
+        Mutex::ScopedLock l(stopLock);
+        active = false;
+    }
+    stop();
+}
+
+void Channel::start(){
+    running = true;
+    dispatcher = Thread(*this);
+}
+
+void Channel::stop() {
+    gets.close();
+    join();
+}
+
+void Channel::join() {
+    Mutex::ScopedLock l(stopLock);
+    if(running && dispatcher.id()) {
+        dispatcher.join();
+        running = false;
+    }
+}
+
+void Channel::dispatch(FrameSet& content, const std::string& destination)
+{
+    ConsumerMap::iterator i = consumers.find(destination);
+    if (i != consumers.end()) {
+        Message msg;
+        msg.populate(content);
+        MessageListener* listener = i->second.listener;
+        listener->received(msg);
+        if (isOpen() && i->second.ackMode != CLIENT_ACK) {
+            bool send = i->second.ackMode == AUTO_ACK
+                || (prefetch &&  ++(i->second.count) > (prefetch / 2));
+            if (send) i->second.count = 0;
+            session.execution().completed(content.getId(), true, send);
+        }
+    } else {
+        QPID_LOG(warning, "Dropping message for unrecognised consumer: " << destination);                        
+    }
+}
+
+void Channel::run() {
+    try {
+        while (true) {
+            FrameSet::shared_ptr content = session.get();
+            //need to dispatch this to the relevant listener:
+            if (content->isA<MessageTransferBody>()) {
+                dispatch(*content, content->as<MessageTransferBody>()->getDestination());
+            } else {
+                QPID_LOG(warning, "Dropping unsupported message type: " << content->getMethod());                        
+            }
+        }
+    } catch (const QueueClosed&) {}
+}
+
+}}
+