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/*
* Copyright (C) 2013 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Marcus Tomlinson <marcus.tomlinson@canonical.com>
* Pawel Stolowski <pawel.stolowski@canonical.com>
*/
#include "unity/scopes/internal/smartscopes/HttpClientQtThread.h"
#include <QNetworkRequest>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QTimer>
#include <cassert>
#include <iostream>
namespace unity
{
namespace scopes
{
namespace internal
{
namespace smartscopes
{
HttpClientQtThread::HttpClientQtThread(const QUrl& url, uint timeout, std::function<void(std::string const&)> const& lineData, HttpHeaders const& headers)
: QThread()
, url_(url)
, lineDataCallback_(lineData)
, headers_(headers)
, timeout_(timeout)
, success_(false)
{
}
HttpClientQtThread::~HttpClientQtThread()
{
cancel();
wait();
}
bool HttpClientQtThread::get_reply(std::string& reply)
{
std::lock_guard<std::mutex> lock(reply_mutex_);
reply = reply_;
return success_;
}
void HttpClientQtThread::run()
{
QNetworkAccessManager* manager = new QNetworkAccessManager();
QNetworkRequest request(url_);
for (auto const& hdr: headers_)
{
request.setRawHeader(QString::fromStdString(hdr.first).toUtf8(), QString::fromStdString(hdr.second).toUtf8());
}
QNetworkReply* reply = manager->get(request);
reply->setReadBufferSize(0); // unlimited buffer
connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(got_reply(QNetworkReply *)));
connect(reply, SIGNAL(readyRead()), this, SLOT(dataReady()));
connect(this, &HttpClientQtThread::abort, reply, &QNetworkReply::abort);
QTimer timeout;
timeout.singleShot(timeout_, this, SLOT(timeout()));
QThread::exec(); // enter event loop
reply->deleteLater();
manager->deleteLater();
}
void HttpClientQtThread::cancel()
{
std::lock_guard<std::mutex> lock(reply_mutex_);
success_ = false;
reply_ = "Request cancelled: " + url_.url().toStdString();
emit HttpClientQtThread::abort();
quit();
}
void HttpClientQtThread::timeout()
{
std::lock_guard<std::mutex> lock(reply_mutex_);
success_ = false;
reply_ = "Request timed out: " + url_.url().toStdString();
emit HttpClientQtThread::abort();
quit();
}
void HttpClientQtThread::dataReady()
{
QNetworkReply* net_reply = qobject_cast<QNetworkReply*>(sender());
if (net_reply)
{
if (net_reply->canReadLine())
{
QByteArray data = net_reply->readLine();
const std::string replyLine(data.constData(), data.size());
lineDataCallback_(replyLine);
}
}
}
void HttpClientQtThread::got_reply(QNetworkReply* reply)
{
std::lock_guard<std::mutex> lock(reply_mutex_);
if (!reply_.empty())
{
return;
}
if (!reply)
{
// no reply
success_ = false;
reply_ = "No reply from " + url_.url().toStdString();
}
else if (!reply->isFinished())
{
// incomplete reply
success_ = false;
reply_ = "Incomplete reply from " + url_.url().toStdString();
}
else if (reply->error() != QNetworkReply::NoError)
{
// communication error
success_ = false;
reply_ = reply->errorString().toStdString();
}
else
{
success_ = true;
// read any remaining lines
while (reply->canReadLine())
{
const QByteArray byte_array = reply->readLine();
lineDataCallback_(std::string(byte_array.constData(), byte_array.size()));
}
// there may be data left which is not "\n" terminated
if (reply->bytesAvailable())
{
const QByteArray byte_array = reply->readAll();
lineDataCallback_(std::string(byte_array.constData(), byte_array.size()));
}
}
quit();
}
} // namespace smartscopes
} // namespace internal
} // namespace scopes
} // namespace unity
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