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Coyote
Microsoft.Coyote.Actors.BugFinding.Tests
BecomeHead

How to use BecomeHead class of Microsoft.Coyote.Actors.BugFinding.Tests package

Best Coyote code snippet using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead

ChainReplicationTests.cs

Source:ChainReplicationTests.cs

...240                    this.Servers = servers;241                    this.Clients = clients;242                }243            }244            internal class BecomeHead : Event245            {246                public ActorId Target;247                public BecomeHead(ActorId target)248                    : base()249                {250                    this.Target = target;251                }252            }253            internal class BecomeTail : Event254            {255                public ActorId Target;256                public BecomeTail(ActorId target)257                    : base()258                {259                    this.Target = target;260                }261            }262            internal class Success : Event263            {264            }265            internal class HeadChanged : Event266            {267            }268            internal class TailChanged : Event269            {270            }271            private class HeadFailed : Event272            {273            }274            private class TailFailed : Event275            {276            }277            private class ServerFailed : Event278            {279            }280            private class FixSuccessor : Event281            {282            }283            private class FixPredecessor : Event284            {285            }286            private class Local : Event287            {288            }289            private class Done : Event290            {291            }292            private List<ActorId> Servers;293            private List<ActorId> Clients;294            private ActorId FailureDetector;295            private ActorId Head;296            private ActorId Tail;297            private int FaultyNodeIndex;298            private int LastUpdateReceivedSucc;299            private int LastAckSent;300            [Start]301            [OnEntry(nameof(InitOnEntry))]302            [OnEventGotoState(typeof(Local), typeof(WaitForFailure))]303            private class Init : State304            {305            }306            private void InitOnEntry(Event e)307            {308                this.Servers = (e as SetupEvent).Servers;309                this.Clients = (e as SetupEvent).Clients;310                this.FailureDetector = this.CreateActor(311                    typeof(FailureDetector),312                    new FailureDetector.SetupEvent(this.Id, this.Servers));313                this.Head = this.Servers[0];314                this.Tail = this.Servers[this.Servers.Count - 1];315                this.RaiseEvent(new Local());316            }317            [OnEventGotoState(typeof(HeadFailed), typeof(CorrectHeadFailure))]318            [OnEventGotoState(typeof(TailFailed), typeof(CorrectTailFailure))]319            [OnEventGotoState(typeof(ServerFailed), typeof(CorrectServerFailure))]320            [OnEventDoAction(typeof(FailureDetector.FailureDetected), nameof(CheckWhichNodeFailed))]321            private class WaitForFailure : State322            {323            }324            private void CheckWhichNodeFailed(Event e)325            {326                this.Assert(this.Servers.Count > 1, "All nodes have failed.");327                var failedServer = (e as FailureDetector.FailureDetected).Server;328                if (this.Head.Equals(failedServer))329                {330                    this.RaiseEvent(new HeadFailed());331                }332                else if (this.Tail.Equals(failedServer))333                {334                    this.RaiseEvent(new TailFailed());335                }336                else337                {338                    for (int i = 0; i < this.Servers.Count - 1; i++)339                    {340                        if (this.Servers[i].Equals(failedServer))341                        {342                            this.FaultyNodeIndex = i;343                        }344                    }345                    this.RaiseEvent(new ServerFailed());346                }347            }348            [OnEntry(nameof(CorrectHeadFailureOnEntry))]349            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]350            [OnEventDoAction(typeof(HeadChanged), nameof(UpdateClients))]351            private class CorrectHeadFailure : State352            {353            }354            private void CorrectHeadFailureOnEntry()355            {356                this.Servers.RemoveAt(0);357                this.Monitor<InvariantMonitor>(358                    new InvariantMonitor.UpdateServers(this.Servers));359                this.Monitor<ServerResponseSeqMonitor>(360                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));361                this.Head = this.Servers[0];362                this.SendEvent(this.Head, new BecomeHead(this.Id));363            }364            private void UpdateClients()365            {366                for (int i = 0; i < this.Clients.Count; i++)367                {368                    this.SendEvent(this.Clients[i], new Client.UpdateHeadTail(this.Head, this.Tail));369                }370                this.RaiseEvent(new Done());371            }372            private void UpdateFailureDetector()373            {374                this.SendEvent(this.FailureDetector, new FailureDetector.FailureCorrected(this.Servers));375            }376            [OnEntry(nameof(CorrectTailFailureOnEntry))]377            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]378            [OnEventDoAction(typeof(TailChanged), nameof(UpdateClients))]379            private class CorrectTailFailure : State380            {381            }382            private void CorrectTailFailureOnEntry()383            {384                this.Servers.RemoveAt(this.Servers.Count - 1);385                this.Monitor<InvariantMonitor>(386                    new InvariantMonitor.UpdateServers(this.Servers));387                this.Monitor<ServerResponseSeqMonitor>(388                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));389                this.Tail = this.Servers[this.Servers.Count - 1];390                this.SendEvent(this.Tail, new BecomeTail(this.Id));391            }392            [OnEntry(nameof(CorrectServerFailureOnEntry))]393            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]394            [OnEventDoAction(typeof(FixSuccessor), nameof(UpdateClients))]395            [OnEventDoAction(typeof(FixPredecessor), nameof(ProcessFixPredecessor))]396            [OnEventDoAction(typeof(ChainReplicationServer.NewSuccInfo), nameof(SetLastUpdate))]397            [OnEventDoAction(typeof(Success), nameof(ProcessSuccess))]398            private class CorrectServerFailure : State399            {400            }401            private void CorrectServerFailureOnEntry()402            {403                this.Servers.RemoveAt(this.FaultyNodeIndex);404                this.Monitor<InvariantMonitor>(405                    new InvariantMonitor.UpdateServers(this.Servers));406                this.Monitor<ServerResponseSeqMonitor>(407                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));408                this.RaiseEvent(new FixSuccessor());409            }410            private void ProcessFixPredecessor()411            {412                this.SendEvent(this.Servers[this.FaultyNodeIndex - 1], new ChainReplicationServer.NewSuccessor(413                    this.Id, this.Servers[this.FaultyNodeIndex], this.LastAckSent, this.LastUpdateReceivedSucc));414            }415            private void SetLastUpdate(Event e)416            {417                this.LastUpdateReceivedSucc = (e as418                    ChainReplicationServer.NewSuccInfo).LastUpdateReceivedSucc;419                this.LastAckSent = (e as420                    ChainReplicationServer.NewSuccInfo).LastAckSent;421                this.RaiseEvent(new FixPredecessor());422            }423            private void ProcessSuccess() => this.RaiseEvent(new Done());424        }425        private class ChainReplicationServer : StateMachine426        {427            internal class SetupEvent : Event428            {429                public int Id;430                public bool IsHead;431                public bool IsTail;432                public SetupEvent(int id, bool isHead, bool isTail)433                    : base()434                {435                    this.Id = id;436                    this.IsHead = isHead;437                    this.IsTail = isTail;438                }439            }440            internal class PredSucc : Event441            {442                public ActorId Predecessor;443                public ActorId Successor;444                public PredSucc(ActorId pred, ActorId succ)445                    : base()446                {447                    this.Predecessor = pred;448                    this.Successor = succ;449                }450            }451            internal class ForwardUpdate : Event452            {453                public ActorId Predecessor;454                public int NextSeqId;455                public ActorId Client;456                public int Key;457                public int Value;458                public ForwardUpdate(ActorId pred, int nextSeqId, ActorId client, int key, int val)459                    : base()460                {461                    this.Predecessor = pred;462                    this.NextSeqId = nextSeqId;463                    this.Client = client;464                    this.Key = key;465                    this.Value = val;466                }467            }468            internal class BackwardAck : Event469            {470                public int NextSeqId;471                public BackwardAck(int nextSeqId)472                    : base()473                {474                    this.NextSeqId = nextSeqId;475                }476            }477            internal class NewPredecessor : Event478            {479                public ActorId Main;480                public ActorId Predecessor;481                public NewPredecessor(ActorId main, ActorId pred)482                    : base()483                {484                    this.Main = main;485                    this.Predecessor = pred;486                }487            }488            internal class NewSuccessor : Event489            {490                public ActorId Main;491                public ActorId Successor;492                public int LastUpdateReceivedSucc;493                public int LastAckSent;494                public NewSuccessor(ActorId main, ActorId succ,495                    int lastUpdateReceivedSucc, int lastAckSent)496                    : base()497                {498                    this.Main = main;499                    this.Successor = succ;500                    this.LastUpdateReceivedSucc = lastUpdateReceivedSucc;501                    this.LastAckSent = lastAckSent;502                }503            }504            internal class NewSuccInfo : Event505            {506                public int LastUpdateReceivedSucc;507                public int LastAckSent;508                public NewSuccInfo(int lastUpdateReceivedSucc, int lastAckSent)509                    : base()510                {511                    this.LastUpdateReceivedSucc = lastUpdateReceivedSucc;512                    this.LastAckSent = lastAckSent;513                }514            }515            internal class ResponseToQuery : Event516            {517                public int Value;518                public ResponseToQuery(int val)519                    : base()520                {521                    this.Value = val;522                }523            }524            internal class ResponseToUpdate : Event525            {526            }527            private class Local : Event528            {529            }530            private int ServerId;531            private bool IsHead;532            private bool IsTail;533            private ActorId Predecessor;534            private ActorId Successor;535            private Dictionary<int, int> KeyValueStore;536            private List<int> History;537            private List<SentLog> SentHistory;538            private int NextSeqId;539            [Start]540            [OnEntry(nameof(InitOnEntry))]541            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]542            [OnEventDoAction(typeof(PredSucc), nameof(SetupPredSucc))]543            [DeferEvents(typeof(Client.Update), typeof(Client.Query),544                typeof(BackwardAck), typeof(ForwardUpdate))]545            private class Init : State546            {547            }548            private void InitOnEntry(Event e)549            {550                this.ServerId = (e as SetupEvent).Id;551                this.IsHead = (e as SetupEvent).IsHead;552                this.IsTail = (e as SetupEvent).IsTail;553                this.KeyValueStore = new Dictionary<int, int>();554                this.History = new List<int>();555                this.SentHistory = new List<SentLog>();556                this.NextSeqId = 0;557            }558            private void SetupPredSucc(Event e)559            {560                this.Predecessor = (e as PredSucc).Predecessor;561                this.Successor = (e as PredSucc).Successor;562                this.RaiseEvent(new Local());563            }564            [OnEventGotoState(typeof(Client.Update), typeof(ProcessUpdate), nameof(ProcessUpdateAction))]565            [OnEventGotoState(typeof(ForwardUpdate), typeof(ProcessFwdUpdate))]566            [OnEventGotoState(typeof(BackwardAck), typeof(ProcessBckAck))]567            [OnEventDoAction(typeof(Client.Query), nameof(ProcessQueryAction))]568            [OnEventDoAction(typeof(NewPredecessor), nameof(UpdatePredecessor))]569            [OnEventDoAction(typeof(NewSuccessor), nameof(UpdateSuccessor))]570            [OnEventDoAction(typeof(ChainReplicationMaster.BecomeHead), nameof(ProcessBecomeHead))]571            [OnEventDoAction(typeof(ChainReplicationMaster.BecomeTail), nameof(ProcessBecomeTail))]572            [OnEventDoAction(typeof(FailureDetector.Ping), nameof(SendPong))]573            private class WaitForRequest : State574            {575            }576            private void ProcessUpdateAction()577            {578                this.NextSeqId++;579                this.Assert(this.IsHead, "Server {0} is not head", this.ServerId);580            }581            private void ProcessQueryAction(Event e)582            {583                var client = (e as Client.Query).Client;584                var key = (e as Client.Query).Key;585                this.Assert(this.IsTail, "Server {0} is not tail", this.Id);586                if (this.KeyValueStore.ContainsKey(key))587                {588                    this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToQuery(589                        this.Id, key, this.KeyValueStore[key]));590                    this.SendEvent(client, new ResponseToQuery(this.KeyValueStore[key]));591                }592                else593                {594                    this.SendEvent(client, new ResponseToQuery(-1));595                }596            }597            private void ProcessBecomeHead(Event e)598            {599                this.IsHead = true;600                this.Predecessor = this.Id;601                var target = (e as ChainReplicationMaster.BecomeHead).Target;602                this.SendEvent(target, new ChainReplicationMaster.HeadChanged());603            }604            private void ProcessBecomeTail(Event e)605            {606                this.IsTail = true;607                this.Successor = this.Id;608                for (int i = 0; i < this.SentHistory.Count; i++)609                {610                    this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToUpdate(611                        this.Id, this.SentHistory[i].Key, this.SentHistory[i].Value));612                    this.SendEvent(this.SentHistory[i].Client, new ResponseToUpdate());613                    this.SendEvent(this.Predecessor, new BackwardAck(this.SentHistory[i].NextSeqId));614                }615                var target = (e as ChainReplicationMaster.BecomeTail).Target;...

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.BugFinding.Tests;3using System;4using System.Threading.Tasks;5{6    {7        static void Main(string[] args)8        {9            BecomeHead();10            Console.ReadLine();11        }12        static void BecomeHead()13        {14            BecomeHead becomeHead = new BecomeHead();15            becomeHead.Run();16        }17    }18}19using Microsoft.Coyote.Actors;20using System;21using System.Threading.Tasks;22{23    {24        public BecomeHead()25        {26        }27        public void Run()28        {29            ActorRuntime.RegisterMonitor(typeof(HeadMonitor));30            ActorRuntime.RegisterMonitor(typeof(OtherMonitor));31            ActorRuntime.RegisterMonitor(typeof(HeadMonitor));32            ActorRuntime.RegisterMonitor(typeof(OtherMonitor));33            ActorId head = ActorRuntime.CreateActor(typeof(Head));34            ActorId other = ActorRuntime.CreateActor(typeof(Other));35            ActorRuntime.SendEvent(head, new BecomeHeadEvent(other));36            ActorRuntime.SendEvent(other, new BecomeHeadEvent(head));37        }38    }39    {40        public ActorId NewHead;41        public BecomeHeadEvent(ActorId newHead)42        {43            this.NewHead = newHead;44        }45    }46    {47        protected override Task OnInitializeAsync(Event initialEvent)48        {49            this.SendEvent(this.Id, new BecomeHeadEvent(this.Id));50            return Task.CompletedTask;51        }52        protected override Task OnEventAsync(Event e)53        {54            if (e is BecomeHeadEvent becomeHeadEvent)55            {56                this.Monitor<HeadMonitor>(new BecomeHeadEvent(becomeHeadEvent.NewHead));57                this.Monitor<OtherMonitor>(new BecomeHeadEvent(becomeHeadEvent.NewHead));58            }59            return Task.CompletedTask;60        }61    }62    {63        protected override Task OnInitializeAsync(Event initialEvent)64        {65            this.SendEvent(this.Id, new BecomeHeadEvent(this.Id));66            return Task.CompletedTask;67        }68        protected override Task OnEventAsync(Event e)69        {70            if (e is BecomeHeadEvent becomeHeadEvent)71            {72                this.Monitor<HeadMonitor>(new BecomeHeadEvent(becomeHeadEvent.NewHead));73                this.Monitor<OtherMonitor>(new BecomeHead

BecomeHead

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Threading.Tasks;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead;7using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeHead;8using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTail;9using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTail;10using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTail;11using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTailTail;12using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTailTailTail;13using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTailTailTailTail;14using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTailTailTailTailTail;15using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTailTailTailTailTailTail;16using Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.BecomeTailTailTailTailTailTailTailTailTail;

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.BugFinding.Tests;3{4    {5        static void Main(string[] args)6        {7            BecomeHead bh = new BecomeHead();8            bh.Execute();9        }10    }11}12using System;13using Microsoft.Coyote.Actors;14using Microsoft.Coyote.Actors.BugFinding.Tests;15{16    {17        static void Main(string[] args)18        {19            BecomeHead bh = new BecomeHead();20            bh.Execute();21        }22    }23}24Error CS0234 The type or namespace name 'Actors' does not exist in the namespace 'Microsoft.Coyote' (are you missing an assembly reference?)25using Microsoft.Coyote.Actors;26using Microsoft.Coyote.Actors.BugFinding.Tests;27{28    {29        static void Main(string[] args)30        {31            BecomeHead bh = new BecomeHead();32            bh.Execute();33        }34    }35}36Error CS0246 The type or namespace name 'BecomeHead' could not be found (are you missing a using directive or an assembly reference?)37using Microsoft.Coyote.Actors;38using Microsoft.Coyote.Actors.BugFinding.Tests;39{40    {41        static void Main(string[] args)

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.BugFinding.Tests;3using System;4using System.Threading.Tasks;5{6    {7        private BecomeHead(ActorId id) : base(id) { }8        private async Task Run()9        {10            BecomeHead head = new BecomeHead(this.Id);11            head.Become(new BecomeHead(this.Id));12            await Task.CompletedTask;13        }14        protected override Task OnInitializeAsync(Event initialEvent)15        {16            return this.Run();17        }18    }19}20using Microsoft.Coyote;21using Microsoft.Coyote.Actors;22using System;23{24    {25        static void Main(string[] args)26        {27            Console.WriteLine("Hello World!");28            ActorId id = ActorId.CreateRandom();29            ActorRuntime.CreateActor(typeof(BecomeHead), new ActorId(id));30            ActorRuntime.Wait();31        }32    }33}

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.BugFinding.Tests;3using System;4using System.Threading.Tasks;5{6    {7        private BecomeHead()8        {9            Become(new BecomeHead());10        }11        private BecomeHead(ActorId

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using System;3{4    {5        protected override async Task OnInitializeAsync(Event initialEvent)6        {7            BecomeHead();8            await Task.CompletedTask;9        }10    }11}12  at Microsoft.Coyote.Actors.Actor.BecomeHead()13  at BecomeHead.BecomeHead.OnInitializeAsync(Event initialEvent) in 2.cs:line 1114  at Microsoft.Coyote.Actors.Actor.InitializeAsync(Event initialEvent)15  at Microsoft.Coyote.Actors.ActorScheduler.ScheduleActorAsync(Actor actor, Event initialEvent)16  at Microsoft.Coyote.Actors.ActorScheduler.ScheduleActorAsync(ActorId actorId, Event initialEvent)17  at Microsoft.Coyote.Actors.ActorScheduler.ScheduleActorAsync(Type actorType, Event initialEvent)18  at Microsoft.Coyote.Actors.ActorScheduler.ScheduleActorAsync[T](Event initialEvent)19  at Microsoft.Coyote.Actors.BugFinding.Tests.BecomeHead.Test() in 1.cs:line 1520  at Microsoft.Coyote.Runtime.SchedulingStrategy.ExecuteAsync()21  at Microsoft.Coyote.Runtime.SchedulingController.ExecuteAsync()22  at Microsoft.Coyote.Runtime.SchedulingController.RunAsync()23  at Microsoft.Coyote.Runtime.SchedulingController.Run()24  at Microsoft.Coyote.TestingServices.TestingEngine.ExecuteAsync()25  at Microsoft.Coyote.TestingServices.TestingEngine.Execute()26  at Microsoft.Coyote.TestingServices.TestRunner.Execute()

BecomeHead

Using AI Code Generation

1    using Microsoft.Coyote.Actors;2    using Microsoft.Coyote.Actors.BugFinding.Tests;3    using System;4    {5        {6            protected override async Task OnInitializeAsync(Event initialEvent)7            {8                BecomeHead();9                await this.ReceiveEventAsync();10            }11        }12    }13    using Microsoft.Coyote.Actors;14    using System;15    {16        {17            protected override async Task OnInitializeAsync(Event initialEvent)18            {19                BecomeHead();20                await this.ReceiveEventAsync();21            }22        }23    }

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors.BugFinding.Tests;2using Microsoft.Coyote.Actors;3using Microsoft.Coyote;4using System.Threading.Tasks;5using System;6{7    {8        static void Main(string[] args)9        {10            var config = Configuration.Create();11            config.MaxSchedulingSteps = 1000;12            config.MaxFairSchedulingSteps = 1000;13            config.MaxStepsFromAnyEntryToExit = 1000;14            config.MaxStepsFromAnyEntryToExit = 1000;

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors.BugFinding.Tests;2using Microsoft.Coyote.Actors;3{4    {5        [OnEventDoAction(typeof(ConfigureEvent), nameof(Configure))]6        [OnEventDoAction(typeof(StartEvent), nameof(Start))]7        [OnEventDoAction(typeof(StopEvent), nameof(Stop))]8        [OnEventDoAction(typeof(AddEvent), nameof(Add))]9        [OnEventDoAction(typeof(RemoveEvent), nameof(Remove))]10        private class Init : State { }11        private class Head : State { }12        private class Tail : State { }13        private void Configure()14        {15            this.Assert(this.CurrentState is Init, "Expected Init state.");16            this.Monitor<SafetyMonitor>(new SafetyEvent(true));17            this.Raise(new StartEvent());18        }19        private void Start()20        {21            this.Assert(this.CurrentState is Init, "Expected Init state.");22            this.Monitor<SafetyMonitor>(new SafetyEvent(true));23            this.Raise(new AddEvent());24        }25        private void Stop()26        {27            this.Assert(this.CurrentState is Init, "Expected Init state.");28            this.Monitor<SafetyMonitor>(new SafetyEvent(true));29            this.Raise(new RemoveEvent());30        }31        private void Add()32        {33            this.Assert(this.CurrentState is Init, "Expected Init state.");34            this.Monitor<SafetyMonitor>(new SafetyEvent(true));35            this.Become(new Head());36        }37        private void Remove()38        {39            this.Assert(this.CurrentState is Init, "Expected Init state.");40            this.Monitor<SafetyMonitor>(new SafetyEvent(true));41            this.Become(new Tail());42        }43    }44}45using Microsoft.Coyote.Actors.BugFinding.Tests;46using Microsoft.Coyote.Actors;47{48    {49        [OnEntry(nameof(InitOnEntry))]50        [OnEventGotoState(typeof(SafetyEvent), typeof(Safe))]51        private class Init : State { }52        [OnEntry(nameof(SafeOnEntry))]53        [OnEventGotoState(typeof(SafetyEvent), typeof(Unsafe))]54        private class Safe : State { }

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