openauto/src/autoapp/Service/Pinger.cpp

102 lines
2.4 KiB
C++

/*
* This file is part of openauto project.
* Copyright (C) 2018 f1x.studio (Michal Szwaj)
*
* openauto is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
* openauto 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with openauto. If not, see <http://www.gnu.org/licenses/>.
*/
#include <f1x/openauto/autoapp/Service/Pinger.hpp>
namespace f1x
{
namespace openauto
{
namespace autoapp
{
namespace service
{
Pinger::Pinger(boost::asio::io_service& ioService, time_t duration)
: strand_(ioService)
, timer_(ioService)
, duration_(duration)
, cancelled_(false)
, pingsCount_(0)
, pongsCount_(0)
{
}
void Pinger::ping(Promise::Pointer promise)
{
strand_.dispatch([this, self = this->shared_from_this(), promise = std::move(promise)]() mutable {
cancelled_ = false;
if(promise_ != nullptr)
{
promise_->reject(aasdk::error::Error(aasdk::error::ErrorCode::OPERATION_IN_PROGRESS));
}
else
{
++pingsCount_;
promise_ = std::move(promise);
timer_.expires_from_now(boost::posix_time::milliseconds(duration_));
timer_.async_wait(strand_.wrap(std::bind(&Pinger::onTimerExceeded, this->shared_from_this(), std::placeholders::_1)));
}
});
}
void Pinger::pong()
{
strand_.dispatch([this, self = this->shared_from_this()]() {
++pongsCount_;
});
}
void Pinger::onTimerExceeded(const boost::system::error_code& error)
{
if(promise_ == nullptr)
{
return;
}
else if(error == boost::asio::error::operation_aborted || cancelled_)
{
promise_->reject(aasdk::error::Error(aasdk::error::ErrorCode::OPERATION_ABORTED));
}
else if(pingsCount_ - pongsCount_ > 1)
{
promise_->reject(aasdk::error::Error());
}
else
{
promise_->resolve();
}
promise_.reset();
}
void Pinger::cancel()
{
strand_.dispatch([this, self = this->shared_from_this()]() {
cancelled_ = true;
timer_.cancel();
});
}
}
}
}
}