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#include "XRetryTransport.h"
#ifndef SPDLOG_ACTIVE_LEVEL
#define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_TRACE
#endif
#include "spdlog/spdlog.h"
using namespace std;
using namespace vagt;
using namespace vagt::transport;
using namespace spdlog;
XRetryTransport::XRetryTransport(std::shared_ptr<XTransport> transport, std::chrono::milliseconds retryInterval, int tryTimes):
transport_(transport),
retryInterval_(retryInterval),
tryTimes_(tryTimes),
isRetryRunning_(false)
{
}
XErrorCode XRetryTransport::start()
{
if (!transport_)
{
SPDLOG_ERROR("Empty transport.");
return XErrorNok;
}
auto rc = transport_->start();
allowPost();
return rc;
}
XErrorCode XRetryTransport::stop()
{
cancelPost();
if (!transport_)
{
SPDLOG_ERROR("Empty transport.");
return XErrorNok;
}
while (isRetryRunning_.load(std::memory_order_acquire))
{
SPDLOG_DEBUG("Waiting for retry exit.");
std::this_thread::sleep_for(std::chrono::milliseconds(100));
}
return transport_->stop();
}
XErrorCode XRetryTransport::post(const std::string& event)
{
if (shouldCancelPost())
{
return XErrorCanceled;
}
if (event.empty())
{
SPDLOG_WARN("Trying post empty event.");
return XErrorClientError;
}
if (!transport_)
{
SPDLOG_ERROR("Empty transport.");
return XErrorNok;
}
XErrorCode rc = XErrorNok;
isRetryRunning_.store(true, std::memory_order_release);
int idx = 0;
do
{
SPDLOG_DEBUG("Posting event:{}.", event);
rc = transport_->post(event);
SPDLOG_DEBUG("Post event:{} ({}).", event, rc);
if (rc == XErrorOk || rc == XErrorCanceled)
{
isRetryRunning_.store(false, std::memory_order_release);
return rc;
}
else if (rc == XErrorClientError)
{
isRetryRunning_.store(false, std::memory_order_release);
SPDLOG_ERROR("Post event:({}).", rc);
return rc;
}
//else if (rc == XErrorTimeout || rc == XErrorServerError || rc == XErrorNetworkError)
else
{
++idx;
if (shouldCancelPost() || idx>=tryTimes_)
{
break;
}
SPDLOG_INFO("Stopping transport for retry:({}), time:({}).", rc, idx);
transport_->stop();
{
unique_lock<mutex> lk(lock_);
bool cancel = cond_.wait_for(lk, retryInterval_, [this]() { return this->cancel_.load(); });
if (cancel)
{
isRetryRunning_.store(false, std::memory_order_release);
SPDLOG_INFO("Cancel post event:({}).", rc);
return rc;
}
}
SPDLOG_INFO("Starting transport for retry:({}), time:({}).", rc, idx);
transport_->start();
}
}
while(true);
isRetryRunning_.store(false, std::memory_order_release);
SPDLOG_ERROR("Post event:({}).", rc);
return rc;
}
void vagt::transport::XRetryTransport::cancelPost()
{
XTransport::cancelPost();
{
unique_lock<mutex> lk(lock_);
cancel_.store(true, std::memory_order_release);
cond_.notify_one();
}
if (transport_)
{
transport_->cancelPost();
}
}
void vagt::transport::XRetryTransport::allowPost()
{
if (transport_)
{
transport_->allowPost();
}
XTransport::allowPost();
}
bool vagt::transport::XRetryTransport::shouldCancelPost()
{
return XTransport::shouldCancelPost();
}
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