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#include "yt_poller.h"
#include <yt/cpp/mapreduce/raw_client/raw_batch_request.h>
#include <yt/cpp/mapreduce/raw_client/raw_requests.h>
#include <yt/cpp/mapreduce/common/debug_metrics.h>
#include <yt/cpp/mapreduce/common/retry_lib.h>
#include <yt/cpp/mapreduce/common/wait_proxy.h>
#include <yt/cpp/mapreduce/http/retry_request.h>
#include <yt/cpp/mapreduce/interface/config.h>
#include <yt/cpp/mapreduce/interface/logging/yt_log.h>
namespace NYT {
namespace NDetail {
using namespace NRawClient;
////////////////////////////////////////////////////////////////////////////////
TYtPoller::TYtPoller(
TClientContext context,
const IClientRetryPolicyPtr& retryPolicy)
: Context_(std::move(context))
, ClientRetryPolicy_(retryPolicy)
, WaiterThread_(&TYtPoller::WatchLoopProc, this)
{
WaiterThread_.Start();
}
TYtPoller::~TYtPoller()
{
Stop();
}
void TYtPoller::Watch(IYtPollerItemPtr item)
{
auto g = Guard(Lock_);
Pending_.emplace_back(std::move(item));
HasData_.Signal();
}
void TYtPoller::Stop()
{
{
auto g = Guard(Lock_);
if (!IsRunning_) {
return;
}
IsRunning_ = false;
HasData_.Signal();
}
WaiterThread_.Join();
}
void TYtPoller::DiscardQueuedItems()
{
for (auto& item : Pending_) {
item->OnItemDiscarded();
}
for (auto& item : InProgress_) {
item->OnItemDiscarded();
}
}
void TYtPoller::WatchLoop()
{
TInstant nextRequest = TInstant::Zero();
while (true) {
{
auto g = Guard(Lock_);
if (IsRunning_ && Pending_.empty() && InProgress_.empty()) {
TWaitProxy::Get()->WaitCondVar(HasData_, Lock_);
}
if (!IsRunning_) {
DiscardQueuedItems();
return;
}
{
auto ug = Unguard(Lock_); // allow adding new items into Pending_
TWaitProxy::Get()->SleepUntil(nextRequest);
nextRequest = TInstant::Now() + Context_.Config->WaitLockPollInterval;
}
if (!Pending_.empty()) {
InProgress_.splice(InProgress_.end(), Pending_);
}
Y_VERIFY(!InProgress_.empty());
}
TRawBatchRequest rawBatchRequest(Context_.Config);
for (auto& item : InProgress_) {
item->PrepareRequest(&rawBatchRequest);
}
try {
ExecuteBatch(ClientRetryPolicy_->CreatePolicyForGenericRequest(), Context_, rawBatchRequest);
} catch (const std::exception& ex) {
YT_LOG_ERROR("Exception while executing batch request: %v", ex.what());
}
for (auto it = InProgress_.begin(); it != InProgress_.end();) {
auto& item = *it;
IYtPollerItem::EStatus status = item->OnRequestExecuted();
if (status == IYtPollerItem::PollBreak) {
it = InProgress_.erase(it);
} else {
++it;
}
}
IncDebugMetric(TStringBuf("yt_poller_top_loop_repeat_count"));
}
}
void* TYtPoller::WatchLoopProc(void* data)
{
static_cast<TYtPoller*>(data)->WatchLoop();
return nullptr;
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NDetail
} // namespace NYT
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