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/*
* 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 <windows.h>
#include <msclr\lock.h>
#include "qpid/client/AsyncSession.h"
#include "qpid/client/SubscriptionManager.h"
#include "qpid/client/Connection.h"
#include "qpid/client/Message.h"
#include "qpid/client/MessageListener.h"
#include "qpid/framing/FrameSet.h"
#include "AmqpConnection.h"
#include "AmqpSession.h"
#include "QpidMarshal.h"
#include "QpidException.h"
namespace Apache {
namespace Qpid {
namespace Interop {
using namespace System;
using namespace System::Runtime::InteropServices;
using namespace msclr;
using namespace qpid::client;
using namespace std;
// Note on locks: Use "this" for fast counting and idle/busy
// notifications. Use the "sessions" list to serialize session
// creation/reaping and overall tear down.
// TODO: switch "this" lock to separate non-visible Object.
AmqpConnection::AmqpConnection(String^ server, int port) :
connectionp(NULL),
busyCount(0),
disposed(false)
{
bool success = false;
System::Exception^ openException = nullptr;
sessions = gcnew Collections::Generic::List<AmqpSession^>();
try {
connectionp = new Connection;
connectionp->open (QpidMarshal::ToNative(server), port);
// TODO: registerFailureCallback for failover
success = true;
const ConnectionSettings& settings = connectionp->getNegotiatedSettings();
this->maxFrameSize = settings.maxFrameSize;
} catch (const qpid::Exception& error) {
String^ errmsg = gcnew String(error.what());
openException = gcnew QpidException(errmsg);
} finally {
if (!success) {
Cleanup();
if (openException == nullptr) {
openException = gcnew QpidException ("unknown connection failure");
}
throw openException;
}
}
}
void AmqpConnection::Cleanup()
{
{
lock l(sessions);
if (disposed)
return;
disposed = true;
}
try {
// let the child sessions clean up
for each(AmqpSession^ s in sessions) {
s->ConnectionClosed();
}
}
finally
{
if (connectionp != NULL) {
connectionp->close();
delete connectionp;
connectionp = NULL;
}
}
}
AmqpConnection::~AmqpConnection()
{
Cleanup();
}
AmqpConnection::!AmqpConnection()
{
Cleanup();
}
void AmqpConnection::Close()
{
// Simulate Dispose()...
Cleanup();
GC::SuppressFinalize(this);
}
AmqpSession^ AmqpConnection::CreateSession()
{
lock l(sessions);
if (disposed) {
throw gcnew ObjectDisposedException("AmqpConnection");
}
AmqpSession^ session = gcnew AmqpSession(this, connectionp);
sessions->Add(session);
return session;
}
// called whenever a child session becomes newly busy (a first reader or writer since last idle)
void AmqpConnection::NotifyBusy()
{
bool changed = false;
{
lock l(this);
if (busyCount++ == 0)
changed = true;
}
}
// called whenever a child session becomes newly idle (a last reader or writer has closed)
// The connection is idle when none of its child sessions are busy
void AmqpConnection::NotifyIdle()
{
bool connectionIdle = false;
{
lock l(this);
if (--busyCount == 0)
connectionIdle = true;
}
if (connectionIdle) {
OnConnectionIdle(this, System::EventArgs::Empty);
}
}
}}} // namespace Apache::Qpid::Interop
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