mirror of https://github.com/opencardev/aasdk
146 lines
5.0 KiB
C++
146 lines
5.0 KiB
C++
/*
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* This file is part of aasdk library project.
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* Copyright (C) 2018 f1x.studio (Michal Szwaj)
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*
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* aasdk is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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* aasdk is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with aasdk. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <boost/endian/conversion.hpp>
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#include <aasdk/Error/Error.hpp>
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#include <aasdk/Messenger/Messenger.hpp>
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#include <aasdk/Common/Log.hpp>
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namespace aasdk
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{
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namespace messenger
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{
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Messenger::Messenger(boost::asio::io_service& ioService, IMessageInStream::Pointer messageInStream, IMessageOutStream::Pointer messageOutStream)
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: receiveStrand_(ioService)
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, sendStrand_(ioService)
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, messageInStream_(std::move(messageInStream))
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, messageOutStream_(std::move(messageOutStream))
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{
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}
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void Messenger::enqueueReceive(ChannelId channelId, ReceivePromise::Pointer promise)
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{
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// enqueueReceive is called from the service channel.
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receiveStrand_.dispatch([this, self = this->shared_from_this(), channelId, promise = std::move(promise)]() mutable {
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//If there's any messages on the channel, resolve. The channel will call enqueueReceive again.
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if(!channelReceiveMessageQueue_.empty(channelId))
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{
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promise->resolve(std::move(channelReceiveMessageQueue_.pop(channelId)));
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}
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else
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{
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channelReceivePromiseQueue_.push(channelId, std::move(promise));
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if(channelReceivePromiseQueue_.size() == 1)
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{
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auto inStreamPromise = ReceivePromise::defer(receiveStrand_);
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inStreamPromise->then(std::bind(&Messenger::inStreamMessageHandler, this->shared_from_this(), std::placeholders::_1),
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std::bind(&Messenger::rejectReceivePromiseQueue, this->shared_from_this(), std::placeholders::_1));
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messageInStream_->startReceive(std::move(inStreamPromise));
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}
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}
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});
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}
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void Messenger::enqueueSend(Message::Pointer message, SendPromise::Pointer promise)
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{
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sendStrand_.dispatch([this, self = this->shared_from_this(), message = std::move(message), promise = std::move(promise)]() mutable {
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channelSendPromiseQueue_.emplace_back(std::make_pair(std::move(message), std::move(promise)));
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if(channelSendPromiseQueue_.size() == 1)
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{
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this->doSend();
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}
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});
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}
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void Messenger::inStreamMessageHandler(Message::Pointer message)
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{
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auto channelId = message->getChannelId();
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// If there's a promise on the queue, we resolve the promise with this message....
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if(channelReceivePromiseQueue_.isPending(channelId))
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{
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channelReceivePromiseQueue_.pop(channelId)->resolve(std::move(message));
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}
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else
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{
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// Or we push the message to the Message Queue for when we do get a promise
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channelReceiveMessageQueue_.push(std::move(message));
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}
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if(!channelReceivePromiseQueue_.empty())
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{
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auto inStreamPromise = ReceivePromise::defer(receiveStrand_);
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inStreamPromise->then(std::bind(&Messenger::inStreamMessageHandler, this->shared_from_this(), std::placeholders::_1),
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std::bind(&Messenger::rejectReceivePromiseQueue, this->shared_from_this(), std::placeholders::_1));
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messageInStream_->startReceive(std::move(inStreamPromise));
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}
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}
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void Messenger::doSend()
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{
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auto queueElementIter = channelSendPromiseQueue_.begin();
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auto outStreamPromise = SendPromise::defer(sendStrand_);
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outStreamPromise->then(std::bind(&Messenger::outStreamMessageHandler, this->shared_from_this(), queueElementIter),
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std::bind(&Messenger::rejectSendPromiseQueue, this->shared_from_this(), std::placeholders::_1));
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messageOutStream_->stream(std::move(queueElementIter->first), std::move(outStreamPromise));
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}
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void Messenger::outStreamMessageHandler(ChannelSendQueue::iterator queueElement)
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{
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queueElement->second->resolve();
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channelSendPromiseQueue_.erase(queueElement);
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if(!channelSendPromiseQueue_.empty())
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{
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this->doSend();
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}
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}
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void Messenger::rejectReceivePromiseQueue(const error::Error& e)
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{
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while(!channelReceivePromiseQueue_.empty())
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{
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channelReceivePromiseQueue_.pop()->reject(e);
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}
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}
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void Messenger::rejectSendPromiseQueue(const error::Error& e)
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{
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while(!channelSendPromiseQueue_.empty())
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{
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auto queueElement(std::move(channelSendPromiseQueue_.front()));
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channelSendPromiseQueue_.pop_front();
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queueElement.second->reject(e);
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}
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}
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void Messenger::stop()
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{
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receiveStrand_.dispatch([this, self = this->shared_from_this()]() {
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channelReceiveMessageQueue_.clear();
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});
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}
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}
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}
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