aboutsummaryrefslogtreecommitdiffstats
path: root/library/cpp/actors/testlib/test_runtime.h
blob: c14cde1b666b950693ed2674a25ce86190dd3eec (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
#pragma once

#include <library/cpp/actors/core/actor.h>
#include <library/cpp/actors/core/actorsystem.h>
#include <library/cpp/actors/core/log.h>
#include <library/cpp/actors/core/events.h>
#include <library/cpp/actors/core/executor_thread.h>
#include <library/cpp/actors/core/mailbox.h>
#include <library/cpp/actors/core/monotonic_provider.h>
#include <library/cpp/actors/util/should_continue.h>
#include <library/cpp/actors/interconnect/poller_tcp.h>
#include <library/cpp/actors/interconnect/mock/ic_mock.h>
#include <library/cpp/random_provider/random_provider.h>
#include <library/cpp/time_provider/time_provider.h>
#include <library/cpp/testing/unittest/tests_data.h>

#include <util/datetime/base.h>
#include <util/folder/tempdir.h>
#include <util/generic/deque.h>
#include <util/generic/hash.h>
#include <util/generic/noncopyable.h>
#include <util/generic/ptr.h>
#include <util/generic/queue.h>
#include <util/generic/set.h>
#include <util/generic/vector.h>
#include <util/system/defaults.h>
#include <util/system/mutex.h>
#include <util/system/condvar.h>
#include <util/system/thread.h>
#include <util/system/sanitizers.h>
#include <util/system/valgrind.h>
#include <utility>

#include <functional>

const TDuration DEFAULT_DISPATCH_TIMEOUT = NSan::PlainOrUnderSanitizer(
        NValgrind::PlainOrUnderValgrind(TDuration::Seconds(60), TDuration::Seconds(120)),
        TDuration::Seconds(120)
);


namespace NActors {
    struct THeSingleSystemEnv { };

    struct TEventMailboxId {
        TEventMailboxId()
            : NodeId(0)
            , Hint(0)
        {
        }

        TEventMailboxId(ui32 nodeId, ui32 hint)
            : NodeId(nodeId)
            , Hint(hint)
        {
        }

        bool operator<(const TEventMailboxId& other) const {
            return (NodeId < other.NodeId) || (NodeId == other.NodeId) && (Hint < other.Hint);
        }

        bool operator==(const TEventMailboxId& other) const {
            return (NodeId == other.NodeId) && (Hint == other.Hint);
        }

        struct THash {
            ui64 operator()(const TEventMailboxId& mboxId) const noexcept {
                return mboxId.NodeId * 31ULL + mboxId.Hint;
            }
        };

        ui32 NodeId;
        ui32 Hint;
    };

    struct TDispatchOptions {
        struct TFinalEventCondition {
            std::function<bool(IEventHandle& ev)> EventCheck;
            ui32 RequiredCount;

            TFinalEventCondition(ui32 eventType, ui32 requiredCount = 1)
                : EventCheck([eventType](IEventHandle& ev) -> bool { return ev.GetTypeRewrite() == eventType; })
                , RequiredCount(requiredCount)
            {
            }

            TFinalEventCondition(std::function<bool(IEventHandle& ev)> eventCheck, ui32 requiredCount = 1)
                : EventCheck(eventCheck)
                , RequiredCount(requiredCount)
            {
            }
        };

        TVector<TFinalEventCondition> FinalEvents;
        TVector<TEventMailboxId> NonEmptyMailboxes;
        TVector<TEventMailboxId> OnlyMailboxes;
        std::function<bool()> CustomFinalCondition;
        bool Quiet = false;
    };

    struct TScheduledEventQueueItem {
        TInstant Deadline;
        TAutoPtr<IEventHandle> Event;
        TAutoPtr<TSchedulerCookieHolder> Cookie;
        ui64 UniqueId;

        TScheduledEventQueueItem(TInstant deadline, TAutoPtr<IEventHandle> event, ISchedulerCookie* cookie)
            : Deadline(deadline)
            , Event(event)
            , Cookie(new TSchedulerCookieHolder(cookie))
            , UniqueId(++NextUniqueId)
        {}

        bool operator<(const TScheduledEventQueueItem& other) const {
            if (Deadline < other.Deadline)
                return true;

            if (Deadline > other.Deadline)
                return false;

            return UniqueId < other.UniqueId;
        }

        static ui64 NextUniqueId;
    };

    typedef TDeque<TAutoPtr<IEventHandle>> TEventsList;
    typedef TSet<TScheduledEventQueueItem> TScheduledEventsList;

    class TEventMailBox : public TThrRefBase {
    public:
        TEventMailBox()
            : InactiveUntil(TInstant::MicroSeconds(0))
#ifdef DEBUG_ORDER_EVENTS
            , ExpectedReceive(0)
            , NextToSend(0)
#endif
        {
        }

        void Send(TAutoPtr<IEventHandle> ev);
        bool IsEmpty() const;
        TAutoPtr<IEventHandle> Pop();
        void Capture(TEventsList& evList);
        void PushFront(TAutoPtr<IEventHandle>& ev);
        void PushFront(TEventsList& evList);
        void CaptureScheduled(TScheduledEventsList& evList);
        void PushScheduled(TScheduledEventsList& evList);
        bool IsActive(const TInstant& currentTime) const;
        void Freeze(const TInstant& deadline);
        TInstant GetInactiveUntil() const;
        void Schedule(const TScheduledEventQueueItem& item);
        bool IsScheduledEmpty() const;
        TInstant GetFirstScheduleDeadline() const;
        ui64 GetSentEventCount() const;

    private:
        TScheduledEventsList Scheduled;
        TInstant InactiveUntil;
        TEventsList Sent;
#ifdef DEBUG_ORDER_EVENTS
        TMap<IEventHandle*, ui64> TrackSent;
        ui64 ExpectedReceive;
        ui64 NextToSend;
#endif
    };

    typedef THashMap<TEventMailboxId, TIntrusivePtr<TEventMailBox>, TEventMailboxId::THash> TEventMailBoxList;

    class TEmptyEventQueueException : public yexception {
    public:
        TEmptyEventQueueException() {
            Append("Event queue is still empty.");
        }
    };

    class TSchedulingLimitReachedException : public yexception {
    public:
        TSchedulingLimitReachedException(ui64 limit) {
            TStringStream str;
            str << "TestActorRuntime Processed over " << limit << " events.";
            Append(str.Str());
        }
    };

    class TTestActorRuntimeBase: public TNonCopyable {
    public:
        class TEdgeActor;
        class TSchedulerThreadStub;
        class TExecutorPoolStub;
        class TTimeProvider;
        class TMonotonicTimeProvider;

        enum class EEventAction {
            PROCESS,
            DROP,
            RESCHEDULE
        };

        typedef std::function<EEventAction(TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event)> TEventObserver;
        typedef std::function<void(TTestActorRuntimeBase& runtime, TScheduledEventsList& scheduledEvents, TEventsList& queue)> TScheduledEventsSelector;
        typedef std::function<bool(TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event)> TEventFilter;
        typedef std::function<bool(TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event, TDuration delay, TInstant& deadline)> TScheduledEventFilter;
        typedef std::function<void(TTestActorRuntimeBase& runtime, const TActorId& parentId, const TActorId& actorId)> TRegistrationObserver;


        TTestActorRuntimeBase(THeSingleSystemEnv);
        TTestActorRuntimeBase(ui32 nodeCount, ui32 dataCenterCount, bool UseRealThreads);
        TTestActorRuntimeBase(ui32 nodeCount, ui32 dataCenterCount);
        TTestActorRuntimeBase(ui32 nodeCount = 1, bool useRealThreads = false);
        virtual ~TTestActorRuntimeBase();
        bool IsRealThreads() const;
        static EEventAction DefaultObserverFunc(TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event);
        static void DroppingScheduledEventsSelector(TTestActorRuntimeBase& runtime, TScheduledEventsList& scheduledEvents, TEventsList& queue);
        static void CollapsedTimeScheduledEventsSelector(TTestActorRuntimeBase& runtime, TScheduledEventsList& scheduledEvents, TEventsList& queue);
        static bool DefaultFilterFunc(TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event);
        static bool NopFilterFunc(TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event, TDuration delay, TInstant& deadline);
        static void DefaultRegistrationObserver(TTestActorRuntimeBase& runtime, const TActorId& parentId, const TActorId& actorId);
        TEventObserver SetObserverFunc(TEventObserver observerFunc);
        TScheduledEventsSelector SetScheduledEventsSelectorFunc(TScheduledEventsSelector scheduledEventsSelectorFunc);
        TEventFilter SetEventFilter(TEventFilter filterFunc);
        TScheduledEventFilter SetScheduledEventFilter(TScheduledEventFilter filterFunc);
        TRegistrationObserver SetRegistrationObserverFunc(TRegistrationObserver observerFunc);
        static bool IsVerbose();
        static void SetVerbose(bool verbose);
        TDuration SetDispatchTimeout(TDuration timeout);
        void SetDispatchedEventsLimit(ui64 limit) {
            DispatchedEventsLimit = limit;
        }
        TDuration SetReschedulingDelay(TDuration delay);
        void SetLogBackend(const TAutoPtr<TLogBackend> logBackend);
        void SetLogPriority(NActors::NLog::EComponent component, NActors::NLog::EPriority priority);
        TIntrusivePtr<ITimeProvider> GetTimeProvider();
        TIntrusivePtr<IMonotonicTimeProvider> GetMonotonicTimeProvider();
        TInstant GetCurrentTime() const;
        TMonotonic GetCurrentMonotonicTime() const;
        void UpdateCurrentTime(TInstant newTime);
        void AdvanceCurrentTime(TDuration duration);
        void AddLocalService(const TActorId& actorId, const TActorSetupCmd& cmd, ui32 nodeIndex = 0);
        virtual void Initialize();
        ui32 GetNodeId(ui32 index = 0) const;
        ui32 GetNodeCount() const;
        ui64 AllocateLocalId();
        ui32 InterconnectPoolId() const;
        TString GetTempDir();
        TActorId Register(IActor* actor, ui32 nodeIndex = 0, ui32 poolId = 0,
            TMailboxType::EType mailboxType = TMailboxType::Simple, ui64 revolvingCounter = 0,
            const TActorId& parentid = TActorId());
        TActorId Register(IActor *actor, ui32 nodeIndex, ui32 poolId, TMailboxHeader *mailbox, ui32 hint,
            const TActorId& parentid = TActorId());
        TActorId RegisterService(const TActorId& serviceId, const TActorId& actorId, ui32 nodeIndex = 0);
        TActorId AllocateEdgeActor(ui32 nodeIndex = 0);
        TEventsList CaptureEvents();
        TEventsList CaptureMailboxEvents(ui32 hint, ui32 nodeId);
        TScheduledEventsList CaptureScheduledEvents();
        void PushFront(TAutoPtr<IEventHandle>& ev);
        void PushEventsFront(TEventsList& events);
        void PushMailboxEventsFront(ui32 hint, ui32 nodeId, TEventsList& events);
        // doesn't dispatch events for edge actors
        bool DispatchEvents(const TDispatchOptions& options = TDispatchOptions());
        bool DispatchEvents(const TDispatchOptions& options, TDuration simTimeout);
        bool DispatchEvents(const TDispatchOptions& options, TInstant simDeadline);
        void Send(IEventHandle* ev, ui32 senderNodeIndex = 0, bool viaActorSystem = false);
        void Schedule(IEventHandle* ev, const TDuration& duration, ui32 nodeIndex = 0);
        void ClearCounters();
        ui64 GetCounter(ui32 evType) const;
        TActorId GetLocalServiceId(const TActorId& serviceId, ui32 nodeIndex = 0);
        void WaitForEdgeEvents(TEventFilter filter, const TSet<TActorId>& edgeFilter = {}, TDuration simTimeout = TDuration::Max());
        TActorId GetInterconnectProxy(ui32 nodeIndexFrom, ui32 nodeIndexTo);
        void BlockOutputForActor(const TActorId& actorId);
        IActor* FindActor(const TActorId& actorId, ui32 nodeIndex = Max<ui32>()) const;
        void EnableScheduleForActor(const TActorId& actorId, bool allow = true);
        bool IsScheduleForActorEnabled(const TActorId& actorId) const;
        TIntrusivePtr<NMonitoring::TDynamicCounters> GetDynamicCounters(ui32 nodeIndex = 0);
        void SetupMonitoring();

        template<typename T>
        void AppendToLogSettings(NLog::EComponent minVal, NLog::EComponent maxVal, T func) {
            Y_VERIFY(!IsInitialized);

            for (const auto& pair : Nodes) {
                pair.second->LogSettings->Append(minVal, maxVal, func);
            }
        }

        TIntrusivePtr<NLog::TSettings> GetLogSettings(ui32 nodeIdx)
        {
            return Nodes[FirstNodeId + nodeIdx]->LogSettings;
        }

        TActorSystem* SingleSys() const;
        TActorSystem* GetAnyNodeActorSystem();
        TActorSystem* GetActorSystem(ui32 nodeId);
        template <typename TEvent>
        TEvent* GrabEdgeEventIf(TAutoPtr<IEventHandle>& handle, std::function<bool(const TEvent&)> predicate, TDuration simTimeout = TDuration::Max()) {
            handle.Destroy();
            const ui32 eventType = TEvent::EventType;
            WaitForEdgeEvents([&](TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event) {
                Y_UNUSED(runtime);
                if (event->GetTypeRewrite() != eventType)
                    return false;

                TEvent* typedEvent = reinterpret_cast<TAutoPtr<TEventHandle<TEvent>>&>(event)->Get();
                if (predicate(*typedEvent)) {
                    handle = event;
                    return true;
                }

                return false;
            }, {}, simTimeout);

            if (simTimeout == TDuration::Max())
                Y_VERIFY(handle);

            if (handle) {
                return reinterpret_cast<TAutoPtr<TEventHandle<TEvent>>&>(handle)->Get();
            } else {
                return nullptr;
            }
        }

        template<class TEvent>
        typename TEvent::TPtr GrabEdgeEventIf(
                const TSet<TActorId>& edgeFilter,
                const std::function<bool(const typename TEvent::TPtr&)>& predicate,
                TDuration simTimeout = TDuration::Max())
        {
            typename TEvent::TPtr handle;
            const ui32 eventType = TEvent::EventType;
            WaitForEdgeEvents([&](TTestActorRuntimeBase& runtime, TAutoPtr<IEventHandle>& event) {
                Y_UNUSED(runtime);
                if (event->GetTypeRewrite() != eventType)
                    return false;

                typename TEvent::TPtr* typedEvent = reinterpret_cast<typename TEvent::TPtr*>(&event);
                if (predicate(*typedEvent)) {
                    handle = *typedEvent;
                    return true;
                }

                return false;
            }, edgeFilter, simTimeout);

            if (simTimeout == TDuration::Max())
                Y_VERIFY(handle);

            return handle;
        }

        template<class TEvent>
        typename TEvent::TPtr GrabEdgeEventIf(
                const TActorId& edgeActor,
                const std::function<bool(const typename TEvent::TPtr&)>& predicate,
                TDuration simTimeout = TDuration::Max())
        {
            TSet<TActorId> edgeFilter{edgeActor};
            return GrabEdgeEventIf<TEvent>(edgeFilter, predicate, simTimeout);
        }

        template <typename TEvent>
        TEvent* GrabEdgeEvent(TAutoPtr<IEventHandle>& handle, TDuration simTimeout = TDuration::Max()) {
            std::function<bool(const TEvent&)> truth = [](const TEvent&) { return true; };
            return GrabEdgeEventIf(handle, truth, simTimeout);
        }

        template <typename TEvent>
        THolder<TEvent> GrabEdgeEvent(TDuration simTimeout = TDuration::Max()) {
            TAutoPtr<IEventHandle> handle;
            std::function<bool(const TEvent&)> truth = [](const TEvent&) { return true; };
            GrabEdgeEventIf(handle, truth, simTimeout);
            return THolder(handle ? handle->Release<TEvent>().Release() : nullptr);
        }

        template<class TEvent>
        typename TEvent::TPtr GrabEdgeEvent(const TSet<TActorId>& edgeFilter, TDuration simTimeout = TDuration::Max()) {
            return GrabEdgeEventIf<TEvent>(edgeFilter, [](const typename TEvent::TPtr&) { return true; }, simTimeout);
        }

        template<class TEvent>
        typename TEvent::TPtr GrabEdgeEvent(const TActorId& edgeActor, TDuration simTimeout = TDuration::Max()) {
            TSet<TActorId> edgeFilter{edgeActor};
            return GrabEdgeEvent<TEvent>(edgeFilter, simTimeout);
        }

        // replace with std::variant<>
        template <typename... TEvents>
        std::tuple<TEvents*...> GrabEdgeEvents(TAutoPtr<IEventHandle>& handle, TDuration simTimeout = TDuration::Max()) {
            handle.Destroy();
            auto eventTypes = { TEvents::EventType... };
            WaitForEdgeEvents([&](TTestActorRuntimeBase&, TAutoPtr<IEventHandle>& event) {
                if (std::find(std::begin(eventTypes), std::end(eventTypes), event->GetTypeRewrite()) == std::end(eventTypes))
                    return false;
                handle = event;
                return true;
            }, {}, simTimeout);
            if (simTimeout == TDuration::Max())
                Y_VERIFY(handle);
            if (handle) {
                return std::make_tuple(handle->Type == TEvents::EventType
                                       ? reinterpret_cast<TAutoPtr<TEventHandle<TEvents>>&>(handle)->Get()
                                       : static_cast<TEvents*>(nullptr)...);
            }
            return {};
        }

        template <typename TEvent>
        TEvent* GrabEdgeEventRethrow(TAutoPtr<IEventHandle>& handle, TDuration simTimeout = TDuration::Max()) {
            try {
                return GrabEdgeEvent<TEvent>(handle, simTimeout);
            } catch (...) {
                ythrow TWithBackTrace<yexception>() << "Exception occured while waiting for " << TypeName<TEvent>() << ": " << CurrentExceptionMessage();
            }
        }

        template<class TEvent>
        typename TEvent::TPtr GrabEdgeEventRethrow(const TSet<TActorId>& edgeFilter, TDuration simTimeout = TDuration::Max()) {
            try {
                return GrabEdgeEvent<TEvent>(edgeFilter, simTimeout);
            } catch (...) {
                ythrow TWithBackTrace<yexception>() << "Exception occured while waiting for " << TypeName<TEvent>() << ": " << CurrentExceptionMessage();
            }
        }

        template<class TEvent>
        typename TEvent::TPtr GrabEdgeEventRethrow(const TActorId& edgeActor, TDuration simTimeout = TDuration::Max()) {
            try {
                return GrabEdgeEvent<TEvent>(edgeActor, simTimeout);
            } catch (...) {
                ythrow TWithBackTrace<yexception>() << "Exception occured while waiting for " << TypeName<TEvent>() << ": " << CurrentExceptionMessage();
            }
        }

        template <typename... TEvents>
        static TString TypeNames() {
            static TString names[] = { TypeName<TEvents>()... };
            TString result;
            for (const TString& s : names) {
                if (result.empty()) {
                    result += '<';
                } else {
                    result += ',';
                }
                result += s;
            }
            if (!result.empty()) {
                result += '>';
            }
            return result;
        }

        template <typename... TEvents>
        std::tuple<TEvents*...> GrabEdgeEventsRethrow(TAutoPtr<IEventHandle>& handle, TDuration simTimeout = TDuration::Max()) {
            try {
                return GrabEdgeEvents<TEvents...>(handle, simTimeout);
            } catch (...) {
                ythrow TWithBackTrace<yexception>() << "Exception occured while waiting for " << TypeNames<TEvents...>() << ": " << CurrentExceptionMessage();
            }
        }

        void ResetScheduledCount() {
            ScheduledCount = 0;
        }

        void SetScheduledLimit(ui64 limit) {
            ScheduledLimit = limit;
        }

        void SetDispatcherRandomSeed(TInstant time, ui64 iteration);
        TString GetActorName(const TActorId& actorId) const;

        const TVector<ui64>& GetTxAllocatorTabletIds() const { return TxAllocatorTabletIds; }
        void SetTxAllocatorTabletIds(const TVector<ui64>& ids) { TxAllocatorTabletIds = ids; }

        void SetUseRealInterconnect() {
            UseRealInterconnect = true;
        }

    protected:
        struct TNodeDataBase;
        TNodeDataBase* GetRawNode(ui32 node) const {
            return Nodes.at(FirstNodeId + node).Get();
        }

        static IExecutorPool* CreateExecutorPoolStub(TTestActorRuntimeBase* runtime, ui32 nodeIndex, TNodeDataBase* node, ui32 poolId);
        virtual TIntrusivePtr<NMonitoring::TDynamicCounters> GetCountersForComponent(TIntrusivePtr<NMonitoring::TDynamicCounters> counters, const char* component) {
            Y_UNUSED(counters);
            Y_UNUSED(component);

            // do nothing, just return the existing counters
            return counters;
        }

        THolder<TActorSystemSetup> MakeActorSystemSetup(ui32 nodeIndex, TNodeDataBase* node);
        THolder<TActorSystem> MakeActorSystem(ui32 nodeIndex, TNodeDataBase* node);
        virtual void InitActorSystemSetup(TActorSystemSetup& setup) {
            Y_UNUSED(setup);
        }

   private:
        IActor* FindActor(const TActorId& actorId, TNodeDataBase* node) const;
        void SendInternal(IEventHandle* ev, ui32 nodeIndex, bool viaActorSystem);
        TEventMailBox& GetMailbox(ui32 nodeId, ui32 hint);
        void ClearMailbox(ui32 nodeId, ui32 hint);
        void HandleNonEmptyMailboxesForEachContext(TEventMailboxId mboxId);
        void UpdateFinalEventsStatsForEachContext(IEventHandle& ev);
        bool DispatchEventsInternal(const TDispatchOptions& options, TInstant simDeadline);

    private:
        ui64 ScheduledCount;
        ui64 ScheduledLimit;
        THolder<TTempDir> TmpDir;
        const TThread::TId MainThreadId;

    protected:
        bool UseRealInterconnect = false;
        TInterconnectMock InterconnectMock;
        bool IsInitialized = false;
        bool SingleSysEnv = false;
        const TString ClusterUUID;
        const ui32 FirstNodeId;
        const ui32 NodeCount;
        const ui32 DataCenterCount;
        const bool UseRealThreads;

        ui64 LocalId;
        TMutex Mutex;
        TCondVar MailboxesHasEvents;
        TEventMailBoxList Mailboxes;
        TMap<ui32, ui64> EvCounters;
        ui64 DispatchCyclesCount;
        ui64 DispatchedEventsCount;
        ui64 DispatchedEventsLimit = 2'500'000;
        TActorId CurrentRecipient;
        ui64 DispatcherRandomSeed;
        TIntrusivePtr<IRandomProvider> DispatcherRandomProvider;
        TAutoPtr<TLogBackend> LogBackend;
        bool NeedMonitoring;

        TIntrusivePtr<IRandomProvider> RandomProvider;
        TIntrusivePtr<ITimeProvider> TimeProvider;
        TIntrusivePtr<IMonotonicTimeProvider> MonotonicTimeProvider;

    protected:
        struct TNodeDataBase: public TThrRefBase {
            TNodeDataBase();
            void Stop();
            virtual ~TNodeDataBase();
            virtual ui64 GetLoggerPoolId() const {
                return 0;
            }

            template <typename T = void>
            T* GetAppData() {
                return static_cast<T*>(AppData0.get());
            }

            template <typename T = void>
            const T* GetAppData() const {
                return static_cast<T*>(AppData0.get());
            }

            TIntrusivePtr<NMonitoring::TDynamicCounters> DynamicCounters;
            TIntrusivePtr<NActors::NLog::TSettings> LogSettings;
            TIntrusivePtr<NInterconnect::TPollerThreads> Poller;
            volatile ui64* ActorSystemTimestamp;
            volatile ui64* ActorSystemMonotonic;
            TVector<std::pair<TActorId, TActorSetupCmd> > LocalServices;
            TMap<TActorId, IActor*> LocalServicesActors;
            TMap<IActor*, TActorId> ActorToActorId;
            THolder<TMailboxTable> MailboxTable;
            std::shared_ptr<void> AppData0;
            THolder<TActorSystem> ActorSystem;
            THolder<IExecutorPool> SchedulerPool;
            TVector<IExecutorPool*> ExecutorPools;
            THolder<TExecutorThread> ExecutorThread;
        };

        struct INodeFactory {
            virtual ~INodeFactory() = default;
            virtual TIntrusivePtr<TNodeDataBase> CreateNode() = 0;
        };

        struct TDefaultNodeFactory final: INodeFactory {
            virtual TIntrusivePtr<TNodeDataBase> CreateNode() override {
                return new TNodeDataBase();
            }
        };

        INodeFactory& GetNodeFactory() {
            return *NodeFactory;
        }

        virtual TNodeDataBase* GetNodeById(size_t idx) {
            return Nodes[idx].Get();
        }

        void InitNodes();
        void CleanupNodes();
        virtual void InitNodeImpl(TNodeDataBase*, size_t);

        static bool AllowSendFrom(TNodeDataBase* node, TAutoPtr<IEventHandle>& ev);

    protected:
        THolder<INodeFactory> NodeFactory{new TDefaultNodeFactory};

    private:
        void InitNode(TNodeDataBase* node, size_t idx);

        struct TDispatchContext {
            const TDispatchOptions* Options;
            TDispatchContext* PrevContext;

            TMap<const TDispatchOptions::TFinalEventCondition*, ui32> FinalEventFrequency;
            TSet<TEventMailboxId> FoundNonEmptyMailboxes;
            bool FinalEventFound = false;
        };

        TProgramShouldContinue ShouldContinue;
        TMap<ui32, TIntrusivePtr<TNodeDataBase>> Nodes;
        ui64 CurrentTimestamp;
        TSet<TActorId> EdgeActors;
        THashMap<TEventMailboxId, TActorId, TEventMailboxId::THash> EdgeActorByMailbox;
        TDuration DispatchTimeout;
        TDuration ReschedulingDelay;
        TEventObserver ObserverFunc;
        TScheduledEventsSelector ScheduledEventsSelectorFunc;
        TEventFilter EventFilterFunc;
        TScheduledEventFilter ScheduledEventFilterFunc;
        TRegistrationObserver RegistrationObserver;
        TSet<TActorId> BlockedOutput;
        TSet<TActorId> ScheduleWhiteList;
        THashMap<TActorId, TActorId> ScheduleWhiteListParent;
        THashMap<TActorId, TString> ActorNames;
        TDispatchContext* CurrentDispatchContext;
        TVector<ui64> TxAllocatorTabletIds;

        static ui32 NextNodeId;
    };

    template <typename TEvent>
    TEvent* FindEvent(TEventsList& events) {
        for (auto& event : events) {
            if (event && event->GetTypeRewrite() == TEvent::EventType) {
                return static_cast<TEvent*>(event->GetBase());
            }
        }

        return nullptr;
    }

    template <typename TEvent>
    TEvent* FindEvent(TEventsList& events, const std::function<bool(const TEvent&)>& predicate) {
        for (auto& event : events) {
            if (event && event->GetTypeRewrite() == TEvent::EventType && predicate(*static_cast<TEvent*>(event->GetBase()))) {
                return static_cast<TEvent*>(event->GetBase());
            }
        }

        return nullptr;
    }

    template <typename TEvent>
    TEvent* GrabEvent(TEventsList& events, TAutoPtr<IEventHandle>& ev) {
        ev.Destroy();
        for (auto& event : events) {
            if (event && event->GetTypeRewrite() == TEvent::EventType) {
                ev = event;
                return static_cast<TEvent*>(ev->GetBase());
            }
        }

        return nullptr;
    }

    template <typename TEvent>
    TEvent* GrabEvent(TEventsList& events, TAutoPtr<IEventHandle>& ev,
        const std::function<bool(const typename TEvent::TPtr&)>& predicate) {
        ev.Destroy();
        for (auto& event : events) {
            if (event && event->GetTypeRewrite() == TEvent::EventType) {
                if (predicate(reinterpret_cast<const typename TEvent::TPtr&>(event))) {
                    ev = event;
                    return static_cast<TEvent*>(ev->GetBase());
                }
            }
        }

        return nullptr;
    }

    class IStrandingDecoratorFactory {
    public:
        virtual ~IStrandingDecoratorFactory() {}
        virtual IActor* Wrap(const TActorId& delegatee, bool isSync, const TVector<TActorId>& additionalActors) = 0;
    };

    struct IReplyChecker {
        virtual ~IReplyChecker() {}
        virtual void OnRequest(IEventHandle *request) = 0;
        virtual bool IsWaitingForMoreResponses(IEventHandle *response) = 0;
    };

    struct TNoneReplyChecker : IReplyChecker {
        void OnRequest(IEventHandle*) override {
        }

        bool IsWaitingForMoreResponses(IEventHandle*) override {
            return false;
        }
    };

    using TReplyCheckerCreator = std::function<THolder<IReplyChecker>(void)>;

    inline THolder<IReplyChecker> CreateNoneReplyChecker() {
        return MakeHolder<TNoneReplyChecker>();
    }

    TAutoPtr<IStrandingDecoratorFactory> CreateStrandingDecoratorFactory(TTestActorRuntimeBase* runtime,
            TReplyCheckerCreator createReplyChecker = CreateNoneReplyChecker);
    extern ui64 DefaultRandomSeed;
}