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#pragma once
#include <yt/cpp/mapreduce/common/fwd.h>
#include <yt/cpp/mapreduce/http/context.h>
#include <yt/cpp/mapreduce/http/requests.h>
#include <yt/cpp/mapreduce/interface/client.h>
#include <util/generic/list.h>
#include <util/system/mutex.h>
#include <util/system/thread.h>
#include <util/system/condvar.h>
namespace NYT {
namespace NDetail {
namespace NRawClient {
class TRawBatchRequest;
}
////////////////////////////////////////////////////////////////////////////////
class IYtPollerItem
: public TThrRefBase
{
public:
enum EStatus {
PollContinue,
PollBreak,
};
public:
virtual ~IYtPollerItem() = default;
virtual void PrepareRequest(NRawClient::TRawBatchRequest* batchRequest) = 0;
// Should return PollContinue if poller should continue polling this item.
// Should return PollBreak if poller should stop polling this item.
virtual EStatus OnRequestExecuted() = 0;
virtual void OnItemDiscarded() = 0;
};
using IYtPollerItemPtr = ::TIntrusivePtr<IYtPollerItem>;
////////////////////////////////////////////////////////////////////////////////
class TYtPoller
: public TThrRefBase
{
public:
TYtPoller(TClientContext context, const IClientRetryPolicyPtr& retryPolicy);
~TYtPoller();
void Watch(IYtPollerItemPtr item);
void Stop();
private:
void DiscardQueuedItems();
void WatchLoop();
static void* WatchLoopProc(void*);
private:
struct TItem;
const TClientContext Context_;
const IClientRetryPolicyPtr ClientRetryPolicy_;
TList<IYtPollerItemPtr> InProgress_;
TList<IYtPollerItemPtr> Pending_;
TThread WaiterThread_;
TMutex Lock_;
TCondVar HasData_;
bool IsRunning_ = true;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NDetail
} // namespace NYT
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