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#include "XBufferedTransport.h"
#ifndef SPDLOG_ACTIVE_LEVEL
#define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_TRACE
#endif
#include "spdlog/spdlog.h"
using namespace std;
using namespace vagt::transport;
using namespace spdlog;
vagt::transport::XBufferedTransport::XBufferedTransport(std::shared_ptr<XTransport> transport, std::shared_ptr<queue::XQueue> queue):
transport_(transport), queue_(queue)
{
}
vagt::transport::XBufferedTransport::~XBufferedTransport()
{
}
XErrorCode vagt::transport::XBufferedTransport::start()
{
if (!transport_)
{
SPDLOG_ERROR("Empty transport.");
return XErrorNok;
}
if (!queue_)
{
SPDLOG_ERROR("Empty queue.");
return XErrorNok;
}
auto rc = transport_->start();
future_ = async(launch::async, [this]() {return this->worker(); });
allowPost();
return rc;
}
XErrorCode vagt::transport::XBufferedTransport::stop()
{
cancelPost();
if (!transport_)
{
SPDLOG_ERROR("Empty transport.");
return XErrorNok;
}
if (!queue_)
{
SPDLOG_ERROR("Empty queue.");
return XErrorNok;
}
future_.get();
return transport_->stop();
}
XErrorCode vagt::transport::XBufferedTransport::post(const std::string& event)
{
if (shouldCancelPost())
{
return XErrorCanceled;
}
if (event.empty())
{
SPDLOG_WARN("Trying post empty event.");
return XErrorClientError;
}
if (!queue_)
{
return XErrorNok;
}
auto rc = vagt::queue::XErrorOk;
{
unique_lock<mutex> _(lock_);
rc = queue_->push(event);
cond_.notify_one();
}
if (rc == vagt::queue::XErrorOk)
{
return XErrorOk;
}
else
{
return XErrorNok;
}
}
void vagt::transport::XBufferedTransport::cancelPost()
{
XTransport::cancelPost();
{
unique_lock<mutex> _(lock_);
cancel_.store(true, std::memory_order_release);
cond_.notify_one();
}
if (transport_)
{
transport_->cancelPost();
}
}
void vagt::transport::XBufferedTransport::allowPost()
{
if (transport_)
{
transport_->allowPost();
}
XTransport::allowPost();
}
bool vagt::transport::XBufferedTransport::shouldCancelPost()
{
return XTransport::shouldCancelPost();
}
void vagt::transport::XBufferedTransport::worker()
{
SPDLOG_INFO("Start transport send thread.");
while (true)
{
string event;
{
unique_lock<mutex> _(lock_);
cond_.wait(_, [this]() {return shouldCancelPost() || !queue_->empty(); });
if (shouldCancelPost())
{
SPDLOG_INFO("Quit transport send thread.");
return;
}
if (!queue_->empty())
{
event = queue_->front();
}
else
{
continue;
}
}
if (transport_)
{
auto rc = transport_->post(event);
if (vagt::transport::XErrorOk == rc)
{
unique_lock<mutex> _(lock_);
queue_->pop();
}
else if (vagt::transport::XErrorClientError == rc)
{
unique_lock<mutex> _(lock_);
queue_->pop();
SPDLOG_WARN("Drop event:({}) ({}).", event, rc);
}
}
}
}
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