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#pragma once
#include <library/cpp/actors/core/actor.h>
#include <library/cpp/actors/core/events.h>
#include <library/cpp/actors/core/interconnect.h>
#include <library/cpp/actors/core/hfunc.h>
#include <ydb/library/yql/utils/actors/rich_actor.h>
#include <ydb/library/yql/utils/log/log.h>
namespace NYql {
enum EExecutorPoolType {
Main,
FullResultWriter,
TotalCount,
};
template <typename EventType>
struct TRichActorFutureCallback : public TRichActor<TRichActorFutureCallback<EventType>> {
using TCallback = std::function<void(TAutoPtr<NActors::TEventHandleFat<EventType>>&)>;
using TFailure = std::function<void(void)>;
using TBase = TRichActor<TRichActorFutureCallback<EventType>>;
static constexpr char ActorName[] = "YQL_DQ_ACTOR_FUTURE_CALLBACK";
TRichActorFutureCallback(TCallback&& callback, TFailure&& failure, TDuration timeout)
: TBase(&TRichActorFutureCallback::StateWaitForEvent)
, Callback(std::move(callback))
, Failure(std::move(failure))
, Timeout(timeout)
{ }
private:
const TCallback Callback;
const TFailure Failure;
const TDuration Timeout;
bool TimerStarted = false;
NActors::TSchedulerCookieHolder TimerCookieHolder;
STRICT_STFUNC(StateWaitForEvent,
HFunc(EventType, Handle)
cFunc(NActors::TEvents::TEvBootstrap::EventType, OnFailure)
hFunc(NActors::TEvInterconnect::TEvNodeConnected, [this] (NActors::TEvInterconnect::TEvNodeConnected::TPtr& ev) mutable {
this->Subscribe(ev->Get()->NodeId);
})
hFunc(NActors::TEvInterconnect::TEvNodeDisconnected, [this] (NActors::TEvInterconnect::TEvNodeDisconnected::TPtr& ev) mutable {
this->Unsubscribe(ev->Get()->NodeId);
TimerStarted = true;
OnFailure();
})
hFunc(NActors::TEvents::TEvUndelivered, [this] (NActors::TEvents::TEvUndelivered::TPtr& ev) mutable {
this->Unsubscribe(ev->Sender.NodeId());
TimerStarted = true;
OnFailure();
})
)
void Handle(typename EventType::TPtr ev, const NActors::TActorContext& ctx) {
Y_UNUSED(ctx);
Callback(ev);
this->PassAway();
}
TAutoPtr<NActors::IEventHandle> AfterRegister(const NActors::TActorId& self, const NActors::TActorId& parentId) override {
return new NActors::IEventHandleFat(self, parentId, new NActors::TEvents::TEvBootstrap, 0);
}
void OnFailure() {
if (TimerStarted) {
Failure();
this->PassAway();
} else {
TimerStarted = true;
TimerCookieHolder.Reset(NActors::ISchedulerCookie::Make2Way());
this->Schedule(Timeout, new NActors::TEvents::TEvBootstrap, TimerCookieHolder.Get());
}
}
};
template <class TDerived>
class TSynchronizableRichActor : public TRichActor<TDerived> {
public:
using TBase = TRichActor<TDerived>;
template <class TEvType>
using TCallback = std::function<void(typename TEvType::TPtr&)>;
using TAbstractCallback = std::function<void(TAutoPtr<NActors::IEventHandle>&)>;
using THandler = typename TBase::TReceiveFunc;
enum ESyncState {
E_IDLE,
E_SYNC_REQUESTED,
E_SYNC_RECEIVED,
};
template <class... Args>
explicit TSynchronizableRichActor(Args&&... args)
: TRichActor<TDerived>(std::forward<Args>(args)...) {}
template <class TEvType>
void Synchronize(TCallback<TEvType> callback) {
switch (SyncState_) {
case E_SYNC_REQUESTED:
throw yexception() << "Synchronization was already requested";
break;
case E_IDLE:
[[fallthrough]];
case E_SYNC_RECEIVED:
InterruptedHandler_ = TBase::CurrentStateFunc();
SyncCallback_ = [callback](TAutoPtr<NActors::IEventHandle>& ev) {
auto* x = reinterpret_cast<typename TEvType::TPtr*>(&ev);
callback(*x);
};
TBase::Become(&TSynchronizableRichActor::SyncHandler);
ExpectedEventType_ = TEvType::EventType;
SyncState_ = E_SYNC_REQUESTED;
break;
}
}
protected:
void AddCriticalEventType(ui32 type) {
CriticalEventTypes_.insert(type);
}
private:
THandler InterruptedHandler_{nullptr};
TDeque<TAutoPtr<NActors::IEventHandle>> DelayedEvents_{};
TAbstractCallback SyncCallback_{nullptr};
ESyncState SyncState_{E_IDLE};
ui32 ExpectedEventType_{0};
THashSet<ui32> CriticalEventTypes_{};
void SyncHandler(TAutoPtr<NActors::IEventHandle>& ev, const NActors::TActorContext& ctx) {
const ui32 etype = ev->GetTypeRewrite();
if (etype == ExpectedEventType_) {
OnSync(ev, ctx);
} else if (CriticalEventTypes_.contains(etype)) {
(this->*InterruptedHandler_)(ev, ctx);
} else {
EnqueueEvent(ev);
}
}
void OnSync(TAutoPtr<NActors::IEventHandle>& ev, const NActors::TActorContext& ctx) {
YQL_CLOG(DEBUG, ProviderDq) << "OnSync(): delayed messages " << DelayedEvents_.size();
SyncState_ = E_SYNC_RECEIVED;
TBase::Become(InterruptedHandler_);
SyncCallback_(ev);
if (SyncState_ == E_SYNC_REQUESTED) {
return;
}
SyncCallback_ = nullptr;
while (!DelayedEvents_.empty() && !TBase::Killed) {
auto event = std::move(DelayedEvents_.front());
DelayedEvents_.pop_front();
InterruptedHandler_ = TBase::CurrentStateFunc();
(this->*InterruptedHandler_)(event, ctx);
if (SyncState_ == E_SYNC_REQUESTED) {
return;
}
}
InterruptedHandler_ = nullptr;
ExpectedEventType_ = 0;
SyncState_ = E_IDLE;
}
void EnqueueEvent(TAutoPtr<NActors::IEventHandle>& ev) {
DelayedEvents_.emplace_back(ev.Release());
}
};
} // namespace NYql
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