Test your AI Agents with the all-new Agent to Agent Testing Platform.Learn More

How to use InitOnEntry method of Microsoft.Coyote.Actors.BugFinding.Tests.Response class

Best Coyote code snippet using Microsoft.Coyote.Actors.BugFinding.Tests.Response.InitOnEntry

ChainReplicationTests.cs

Source:ChainReplicationTests.cs

...157            private List<ActorId> Servers;158            private int CheckNodeIdx;159            private int Failures;160            [Start]161            [OnEntry(nameof(InitOnEntry))]162            [OnEventGotoState(typeof(Local), typeof(StartMonitoring))]163            private class Init : State164            {165            }166            private void InitOnEntry(Event e)167            {168                this.Main = (e as SetupEvent).Main;169                this.Servers = (e as SetupEvent).Servers;170                this.CheckNodeIdx = 0;171                this.Failures = 100;172                this.RaiseEvent(new Local());173            }174            [OnEntry(nameof(StartMonitoringOnEntry))]175            [OnEventGotoState(typeof(Pong), typeof(StartMonitoring), nameof(HandlePong))]176            [OnEventGotoState(typeof(InjectFailure), typeof(HandleFailure))]177            private class StartMonitoring : State178            {179            }180            private void StartMonitoringOnEntry()181            {182                if (this.Failures < 1)183                {184                    this.RaiseHaltEvent();185                }186                else187                {188                    this.SendEvent(this.Servers[this.CheckNodeIdx], new Ping(this.Id));189                    if (this.Servers.Count > 1)190                    {191                        if (this.RandomBoolean())192                        {193                            this.SendEvent(this.Id, new InjectFailure());194                        }195                        else196                        {197                            this.SendEvent(this.Id, new Pong());198                        }199                    }200                    else201                    {202                        this.SendEvent(this.Id, new Pong());203                    }204                    this.Failures--;205                }206            }207            private void HandlePong()208            {209                this.CheckNodeIdx++;210                if (this.CheckNodeIdx == this.Servers.Count)211                {212                    this.CheckNodeIdx = 0;213                }214            }215            [OnEntry(nameof(HandleFailureOnEntry))]216            [OnEventGotoState(typeof(FailureCorrected), typeof(StartMonitoring), nameof(ProcessFailureCorrected))]217            [IgnoreEvents(typeof(Pong), typeof(InjectFailure))]218            private class HandleFailure : State219            {220            }221            private void HandleFailureOnEntry()222            {223                this.SendEvent(this.Main, new FailureDetected(this.Servers[this.CheckNodeIdx]));224            }225            private void ProcessFailureCorrected(Event e)226            {227                this.CheckNodeIdx = 0;228                this.Servers = (e as FailureCorrected).Servers;229            }230        }231        private class ChainReplicationMaster : StateMachine232        {233            internal class SetupEvent : Event234            {235                public List<ActorId> Servers;236                public List<ActorId> Clients;237                public SetupEvent(List<ActorId> servers, List<ActorId> clients)238                    : base()239                {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;616                this.SendEvent(target, new ChainReplicationMaster.TailChanged());617            }618            private void SendPong(Event e)619            {620                var target = (e as FailureDetector.Ping).Target;621                this.SendEvent(target, new FailureDetector.Pong());622            }623            private void UpdatePredecessor(Event e)624            {625                var main = (e as NewPredecessor).Main;626                this.Predecessor = (e as NewPredecessor).Predecessor;627                if (this.History.Count > 0)628                {629                    if (this.SentHistory.Count > 0)630                    {631                        this.SendEvent(main, new NewSuccInfo(632                            this.History[this.History.Count - 1],633                            this.SentHistory[0].NextSeqId));634                    }635                    else636                    {637                        this.SendEvent(main, new NewSuccInfo(638                            this.History[this.History.Count - 1],639                            this.History[this.History.Count - 1]));640                    }641                }642            }643            private void UpdateSuccessor(Event e)644            {645                var main = (e as NewSuccessor).Main;646                this.Successor = (e as NewSuccessor).Successor;647                var lastUpdateReceivedSucc = (e as NewSuccessor).LastUpdateReceivedSucc;648                var lastAckSent = (e as NewSuccessor).LastAckSent;649                if (this.SentHistory.Count > 0)650                {651                    for (int i = 0; i < this.SentHistory.Count; i++)652                    {653                        if (this.SentHistory[i].NextSeqId > lastUpdateReceivedSucc)654                        {655                            this.SendEvent(this.Successor, new ForwardUpdate(this.Id, this.SentHistory[i].NextSeqId,656                                this.SentHistory[i].Client, this.SentHistory[i].Key, this.SentHistory[i].Value));657                        }658                    }659                    int tempIndex = -1;660                    for (int i = this.SentHistory.Count - 1; i >= 0; i--)661                    {662                        if (this.SentHistory[i].NextSeqId == lastAckSent)663                        {664                            tempIndex = i;665                        }666                    }667                    for (int i = 0; i < tempIndex; i++)668                    {669                        this.SendEvent(this.Predecessor, new BackwardAck(this.SentHistory[0].NextSeqId));670                        this.SentHistory.RemoveAt(0);671                    }672                }673                this.SendEvent(main, new ChainReplicationMaster.Success());674            }675            [OnEntry(nameof(ProcessUpdateOnEntry))]676            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]677            private class ProcessUpdate : State678            {679            }680            private void ProcessUpdateOnEntry(Event e)681            {682                var client = (e as Client.Update).Client;683                var key = (e as Client.Update).Key;684                var value = (e as Client.Update).Value;685                if (this.KeyValueStore.ContainsKey(key))686                {687                    this.KeyValueStore[key] = value;688                }689                else690                {691                    this.KeyValueStore.Add(key, value);692                }693                this.History.Add(this.NextSeqId);694                this.Monitor<InvariantMonitor>(695                    new InvariantMonitor.HistoryUpdate(this.Id, new List<int>(this.History)));696                this.SentHistory.Add(new SentLog(this.NextSeqId, client, key, value));697                this.Monitor<InvariantMonitor>(698                    new InvariantMonitor.SentUpdate(this.Id, new List<SentLog>(this.SentHistory)));699                this.SendEvent(this.Successor, new ForwardUpdate(this.Id, this.NextSeqId, client, key, value));700                this.RaiseEvent(new Local());701            }702            [OnEntry(nameof(ProcessFwdUpdateOnEntry))]703            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]704            private class ProcessFwdUpdate : State705            {706            }707            private void ProcessFwdUpdateOnEntry(Event e)708            {709                var pred = (e as ForwardUpdate).Predecessor;710                var nextSeqId = (e as ForwardUpdate).NextSeqId;711                var client = (e as ForwardUpdate).Client;712                var key = (e as ForwardUpdate).Key;713                var value = (e as ForwardUpdate).Value;714                if (pred.Equals(this.Predecessor))715                {716                    this.NextSeqId = nextSeqId;717                    if (this.KeyValueStore.ContainsKey(key))718                    {719                        this.KeyValueStore[key] = value;720                    }721                    else722                    {723                        this.KeyValueStore.Add(key, value);724                    }725                    if (!this.IsTail)726                    {727                        this.History.Add(nextSeqId);728                        this.Monitor<InvariantMonitor>(729                            new InvariantMonitor.HistoryUpdate(this.Id, new List<int>(this.History)));730                        this.SentHistory.Add(new SentLog(this.NextSeqId, client, key, value));731                        this.Monitor<InvariantMonitor>(732                            new InvariantMonitor.SentUpdate(this.Id, new List<SentLog>(this.SentHistory)));733                        this.SendEvent(this.Successor, new ForwardUpdate(this.Id, this.NextSeqId, client, key, value));734                    }735                    else736                    {737                        if (!this.IsHead)738                        {739                            this.History.Add(nextSeqId);740                        }741                        this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToUpdate(742                            this.Id, key, value));743                        this.SendEvent(client, new ResponseToUpdate());744                        this.SendEvent(this.Predecessor, new BackwardAck(nextSeqId));745                    }746                }747                this.RaiseEvent(new Local());748            }749            [OnEntry(nameof(ProcessBckAckOnEntry))]750            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]751            private class ProcessBckAck : State752            {753            }754            private void ProcessBckAckOnEntry(Event e)755            {756                var nextSeqId = (e as BackwardAck).NextSeqId;757                this.RemoveItemFromSent(nextSeqId);758                if (!this.IsHead)759                {760                    this.SendEvent(this.Predecessor, new BackwardAck(nextSeqId));761                }762                this.RaiseEvent(new Local());763            }764            private void RemoveItemFromSent(int seqId)765            {766                int removeIdx = -1;767                for (int i = this.SentHistory.Count - 1; i >= 0; i--)768                {769                    if (seqId == this.SentHistory[i].NextSeqId)770                    {771                        removeIdx = i;772                    }773                }774                if (removeIdx != -1)775                {776                    this.SentHistory.RemoveAt(removeIdx);777                }778            }779        }780        private class Client : StateMachine781        {782            internal class SetupEvent : Event783            {784                public int Id;785                public ActorId HeadNode;786                public ActorId TailNode;787                public int Value;788                public SetupEvent(int id, ActorId head, ActorId tail, int val)789                    : base()790                {791                    this.Id = id;792                    this.HeadNode = head;793                    this.TailNode = tail;794                    this.Value = val;795                }796            }797            internal class UpdateHeadTail : Event798            {799                public ActorId Head;800                public ActorId Tail;801                public UpdateHeadTail(ActorId head, ActorId tail)802                    : base()803                {804                    this.Head = head;805                    this.Tail = tail;806                }807            }808            internal class Update : Event809            {810                public ActorId Client;811                public int Key;812                public int Value;813                public Update(ActorId client, int key, int value)814                    : base()815                {816                    this.Client = client;817                    this.Key = key;818                    this.Value = value;819                }820            }821            internal class Query : Event822            {823                public ActorId Client;824                public int Key;825                public Query(ActorId client, int key)826                    : base()827                {828                    this.Client = client;829                    this.Key = key;830                }831            }832            private class Local : Event833            {834            }835            private class Done : Event836            {837            }838            private ActorId HeadNode;839            private ActorId TailNode;840            private int StartIn;841            private int Next;842            private Dictionary<int, int> KeyValueStore;843            [Start]844            [OnEntry(nameof(InitOnEntry))]845            [OnEventGotoState(typeof(Local), typeof(PumpUpdateRequests))]846            private class Init : State847            {848            }849            private void InitOnEntry(Event e)850            {851                this.HeadNode = (e as SetupEvent).HeadNode;852                this.TailNode = (e as SetupEvent).TailNode;853                this.StartIn = (e as SetupEvent).Value;854                this.Next = 1;855                this.KeyValueStore = new Dictionary<int, int>856                {857                    { 1 * this.StartIn, 100 },858                    { 2 * this.StartIn, 200 },859                    { 3 * this.StartIn, 300 },860                    { 4 * this.StartIn, 400 }861                };862                this.RaiseEvent(new Local());863            }...

RaftTests.cs

Source:RaftTests.cs

...824            private ActorId Cluster;825            private int LatestCommand;826            private int Counter;827            [Start]828            [OnEntry(nameof(InitOnEntry))]829            [OnEventDoAction(typeof(ConfigureEvent), nameof(SetupEvent))]830            [OnEventGotoState(typeof(LocalEvent), typeof(PumpRequest))]831            private class Init : State832            {833            }834            private void InitOnEntry()835            {836                this.LatestCommand = -1;837                this.Counter = 0;838            }839            private void SetupEvent(Event e)840            {841                this.Cluster = (e as ConfigureEvent).Cluster;842                this.RaiseEvent(new LocalEvent());843            }844            [OnEntry(nameof(PumpRequestOnEntry))]845            [OnEventDoAction(typeof(Response), nameof(ProcessResponse))]846            [OnEventGotoState(typeof(LocalEvent), typeof(PumpRequest))]847            private class PumpRequest : State848            {849            }850            private void PumpRequestOnEntry()851            {852                this.LatestCommand = this.RandomInteger(100);853                this.Counter++;854                this.SendEvent(this.Cluster, new Request(this.Id, this.LatestCommand));855            }856            private void ProcessResponse()857            {858                if (this.Counter is 3)859                {860                    this.SendEvent(this.Cluster, new ClusterManager.ShutDown());861                    this.RaiseHaltEvent();862                }863                else864                {865                    this.RaiseEvent(new LocalEvent());866                }867            }868        }869        private class ElectionTimer : StateMachine870        {871            internal class ConfigureEvent : Event872            {873                public ActorId Target;874                public ConfigureEvent(ActorId id)875                    : base()876                {877                    this.Target = id;878                }879            }880            internal class StartTimerEvent : Event881            {882            }883            internal class CancelTimer : Event884            {885            }886            internal class Timeout : Event887            {888            }889            private class TickEvent : Event890            {891            }892            private ActorId Target;893            [Start]894            [OnEventDoAction(typeof(ConfigureEvent), nameof(SetupEvent))]895            [OnEventGotoState(typeof(StartTimerEvent), typeof(Active))]896            private class Init : State897            {898            }899            private void SetupEvent(Event e)900            {901                this.Target = (e as ConfigureEvent).Target;902            }903            [OnEntry(nameof(ActiveOnEntry))]904            [OnEventDoAction(typeof(TickEvent), nameof(Tick))]905            [OnEventGotoState(typeof(CancelTimer), typeof(Inactive))]906            [IgnoreEvents(typeof(StartTimerEvent))]907            private class Active : State908            {909            }910            private void ActiveOnEntry()911            {912                this.SendEvent(this.Id, new TickEvent());913            }914            private void Tick()915            {916                if (this.RandomBoolean())917                {918                    this.SendEvent(this.Target, new Timeout());919                }920                this.RaiseEvent(new CancelTimer());921            }922            [OnEventGotoState(typeof(StartTimerEvent), typeof(Active))]923            [IgnoreEvents(typeof(CancelTimer), typeof(TickEvent))]924            private class Inactive : State925            {926            }927        }928        private class PeriodicTimer : StateMachine929        {930            internal class ConfigureEvent : Event931            {932                public ActorId Target;933                public ConfigureEvent(ActorId id)934                    : base()935                {936                    this.Target = id;937                }938            }939            internal class StartTimerEvent : Event940            {941            }942            internal class CancelTimer : Event943            {944            }945            internal class Timeout : Event946            {947            }948            private class TickEvent : Event949            {950            }951            private ActorId Target;952            [Start]953            [OnEventDoAction(typeof(ConfigureEvent), nameof(SetupEvent))]954            [OnEventGotoState(typeof(StartTimerEvent), typeof(Active))]955            private class Init : State956            {957            }958            private void SetupEvent(Event e)959            {960                this.Target = (e as ConfigureEvent).Target;961            }962            [OnEntry(nameof(ActiveOnEntry))]963            [OnEventDoAction(typeof(TickEvent), nameof(Tick))]964            [OnEventGotoState(typeof(CancelTimer), typeof(Inactive))]965            [IgnoreEvents(typeof(StartTimerEvent))]966            private class Active : State967            {968            }969            private void ActiveOnEntry()970            {971                this.SendEvent(this.Id, new TickEvent());972            }973            private void Tick()974            {975                if (this.RandomBoolean())976                {977                    this.SendEvent(this.Target, new Timeout());978                }979                this.RaiseEvent(new CancelTimer());980            }981            [OnEventGotoState(typeof(StartTimerEvent), typeof(Active))]982            [IgnoreEvents(typeof(CancelTimer), typeof(TickEvent))]983            private class Inactive : State984            {985            }986        }987        private class SafetyMonitor : Monitor988        {989            internal class NotifyLeaderElected : Event990            {991                public int Term;992                public NotifyLeaderElected(int term)993                    : base()994                {995                    this.Term = term;996                }997            }998            private class LocalEvent : Event999            {1000            }1001            private HashSet<int> TermsWithLeader;1002            [Start]1003            [OnEntry(nameof(InitOnEntry))]1004            [OnEventGotoState(typeof(LocalEvent), typeof(Monitoring))]1005            private class Init : State1006            {1007            }1008            private void InitOnEntry()1009            {1010                this.TermsWithLeader = new HashSet<int>();1011                this.RaiseEvent(new LocalEvent());1012            }1013            [OnEventDoAction(typeof(NotifyLeaderElected), nameof(ProcessLeaderElected))]1014            private class Monitoring : State1015            {1016            }1017            private void ProcessLeaderElected(Event e)1018            {1019                var term = (e as NotifyLeaderElected).Term;1020                this.Assert(!this.TermsWithLeader.Contains(term), $"Detected more than one leader.");1021                this.TermsWithLeader.Add(term);1022            }...

ChordTests.cs

Source:ChordTests.cs

...50            private List<ActorId> ChordNodes;51            private List<int> Keys;52            private List<int> NodeIds;53            [Start]54            [OnEntry(nameof(InitOnEntry))]55            [OnEventGotoState(typeof(Local), typeof(Waiting))]56            private class Init : State57            {58            }59            private void InitOnEntry()60            {61                this.NumOfNodes = 3;62                this.NumOfIds = (int)Math.Pow(2, this.NumOfNodes);63                this.ChordNodes = new List<ActorId>();64                this.NodeIds = new List<int> { 0, 1, 3 };65                this.Keys = new List<int> { 1, 2, 6 };66                for (int idx = 0; idx < this.NodeIds.Count; idx++)67                {68                    this.ChordNodes.Add(this.CreateActor(typeof(ChordNode)));69                }70                var nodeKeys = this.AssignKeysToNodes();71                for (int idx = 0; idx < this.ChordNodes.Count; idx++)72                {73                    var keys = nodeKeys[this.NodeIds[idx]];74                    this.SendEvent(this.ChordNodes[idx], new ChordNode.SetupEvent(this.NodeIds[idx], new HashSet<int>(keys),75                        new List<ActorId>(this.ChordNodes), new List<int>(this.NodeIds), this.Id));76                }77                this.CreateActor(typeof(Client), new Client.SetupEvent(this.Id, new List<int>(this.Keys)));78                this.RaiseEvent(new Local());79            }80            [OnEventDoAction(typeof(ChordNode.FindSuccessor), nameof(ForwardFindSuccessor))]81            [OnEventDoAction(typeof(CreateNewNode), nameof(ProcessCreateNewNode))]82            [OnEventDoAction(typeof(TerminateNode), nameof(ProcessTerminateNode))]83            [OnEventDoAction(typeof(ChordNode.JoinAck), nameof(QueryStabilize))]84            private class Waiting : State85            {86            }87            private void ForwardFindSuccessor(Event e)88            {89                this.SendEvent(this.ChordNodes[0], e);90            }91            private void ProcessCreateNewNode()92            {93                int newId = -1;94                while ((newId < 0 || this.NodeIds.Contains(newId)) &&95                    this.NodeIds.Count < this.NumOfIds)96                {97                    for (int i = 0; i < this.NumOfIds; i++)98                    {99                        if (this.RandomBoolean())100                        {101                            newId = i;102                        }103                    }104                }105                this.Assert(newId >= 0, "Cannot create a new node, no ids available.");106                var newNode = this.CreateActor(typeof(ChordNode));107                this.NumOfNodes++;108                this.NodeIds.Add(newId);109                this.ChordNodes.Add(newNode);110                this.SendEvent(newNode, new ChordNode.Join(newId, new List<ActorId>(this.ChordNodes),111                    new List<int>(this.NodeIds), this.NumOfIds, this.Id));112            }113            private void ProcessTerminateNode()114            {115                int endId = -1;116                while ((endId < 0 || !this.NodeIds.Contains(endId)) &&117                    this.NodeIds.Count > 0)118                {119                    for (int i = 0; i < this.ChordNodes.Count; i++)120                    {121                        if (this.RandomBoolean())122                        {123                            endId = i;124                        }125                    }126                }127                this.Assert(endId >= 0, "Cannot find a node to terminate.");128                var endNode = this.ChordNodes[endId];129                this.NumOfNodes--;130                this.NodeIds.Remove(endId);131                this.ChordNodes.Remove(endNode);132                this.SendEvent(endNode, new ChordNode.Terminate());133            }134            private void QueryStabilize()135            {136                foreach (var node in this.ChordNodes)137                {138                    this.SendEvent(node, new ChordNode.Stabilize());139                }140            }141            private Dictionary<int, List<int>> AssignKeysToNodes()142            {143                var nodeKeys = new Dictionary<int, List<int>>();144                for (int i = this.Keys.Count - 1; i >= 0; i--)145                {146                    bool assigned = false;147                    for (int j = 0; j < this.NodeIds.Count; j++)148                    {149                        if (this.Keys[i] <= this.NodeIds[j])150                        {151                            if (nodeKeys.ContainsKey(this.NodeIds[j]))152                            {153                                nodeKeys[this.NodeIds[j]].Add(this.Keys[i]);154                            }155                            else156                            {157                                nodeKeys.Add(this.NodeIds[j], new List<int>());158                                nodeKeys[this.NodeIds[j]].Add(this.Keys[i]);159                            }160                            assigned = true;161                            break;162                        }163                    }164                    if (!assigned)165                    {166                        if (nodeKeys.ContainsKey(this.NodeIds[0]))167                        {168                            nodeKeys[this.NodeIds[0]].Add(this.Keys[i]);169                        }170                        else171                        {172                            nodeKeys.Add(this.NodeIds[0], new List<int>());173                            nodeKeys[this.NodeIds[0]].Add(this.Keys[i]);174                        }175                    }176                }177                return nodeKeys;178            }179        }180        private class ChordNode : StateMachine181        {182            internal class SetupEvent : Event183            {184                public int Id;185                public HashSet<int> Keys;186                public List<ActorId> Nodes;187                public List<int> NodeIds;188                public ActorId ManagerId;189                public SetupEvent(int id, HashSet<int> keys, List<ActorId> nodes,190                    List<int> nodeIds, ActorId managerId)191                    : base()192                {193                    this.Id = id;194                    this.Keys = keys;195                    this.Nodes = nodes;196                    this.NodeIds = nodeIds;197                    this.ManagerId = managerId;198                }199            }200            internal class Join : Event201            {202                public int Id;203                public List<ActorId> Nodes;204                public List<int> NodeIds;205                public int NumOfIds;206                public ActorId ManagerId;207                public Join(int id, List<ActorId> nodes, List<int> nodeIds,208                    int numOfIds, ActorId managerId)209                    : base()210                {211                    this.Id = id;212                    this.Nodes = nodes;213                    this.NodeIds = nodeIds;214                    this.NumOfIds = numOfIds;215                    this.ManagerId = managerId;216                }217            }218            internal class FindSuccessor : Event219            {220                public ActorId Sender;221                public int Key;222                public FindSuccessor(ActorId sender, int key)223                    : base()224                {225                    this.Sender = sender;226                    this.Key = key;227                }228            }229            internal class FindSuccessorResp : Event230            {231                public ActorId Node;232                public int Key;233                public FindSuccessorResp(ActorId node, int key)234                    : base()235                {236                    this.Node = node;237                    this.Key = key;238                }239            }240            internal class FindPredecessor : Event241            {242                public ActorId Sender;243                public FindPredecessor(ActorId sender)244                    : base()245                {246                    this.Sender = sender;247                }248            }249            internal class FindPredecessorResp : Event250            {251                public ActorId Node;252                public FindPredecessorResp(ActorId node)253                    : base()254                {255                    this.Node = node;256                }257            }258            internal class QueryId : Event259            {260                public ActorId Sender;261                public QueryId(ActorId sender)262                    : base()263                {264                    this.Sender = sender;265                }266            }267            internal class QueryIdResp : Event268            {269                public int Id;270                public QueryIdResp(int id)271                    : base()272                {273                    this.Id = id;274                }275            }276            internal class AskForKeys : Event277            {278                public ActorId Node;279                public int Id;280                public AskForKeys(ActorId node, int id)281                    : base()282                {283                    this.Node = node;284                    this.Id = id;285                }286            }287            internal class AskForKeysResp : Event288            {289                public List<int> Keys;290                public AskForKeysResp(List<int> keys)291                    : base()292                {293                    this.Keys = keys;294                }295            }296            private class NotifySuccessor : Event297            {298                public ActorId Node;299                public NotifySuccessor(ActorId node)300                    : base()301                {302                    this.Node = node;303                }304            }305            internal class JoinAck : Event306            {307            }308            internal class Stabilize : Event309            {310            }311            internal class Terminate : Event312            {313            }314            private class Local : Event315            {316            }317            private int NodeId;318            private HashSet<int> Keys;319            private int NumOfIds;320            private Dictionary<int, Finger> FingerTable;321            private ActorId Predecessor;322            private ActorId ManagerId;323            [Start]324            [OnEntry(nameof(InitOnEntry))]325            [OnEventGotoState(typeof(Local), typeof(Waiting))]326            [OnEventDoAction(typeof(SetupEvent), nameof(Setup))]327            [OnEventDoAction(typeof(Join), nameof(JoinCluster))]328            [DeferEvents(typeof(AskForKeys), typeof(NotifySuccessor), typeof(Stabilize))]329            private class Init : State330            {331            }332            private void InitOnEntry()333            {334                this.FingerTable = new Dictionary<int, Finger>();335            }336            private void Setup(Event e)337            {338                this.NodeId = (e as SetupEvent).Id;339                this.Keys = (e as SetupEvent).Keys;340                this.ManagerId = (e as SetupEvent).ManagerId;341                var nodes = (e as SetupEvent).Nodes;342                var nodeIds = (e as SetupEvent).NodeIds;343                this.NumOfIds = (int)Math.Pow(2, nodes.Count);344                for (var idx = 1; idx <= nodes.Count; idx++)345                {346                    var start = (this.NodeId + (int)Math.Pow(2, idx - 1)) % this.NumOfIds;347                    var end = (this.NodeId + (int)Math.Pow(2, idx)) % this.NumOfIds;348                    var nodeId = GetSuccessorNodeId(start, nodeIds);349                    this.FingerTable.Add(start, new Finger(start, end, nodes[nodeId]));350                }351                for (var idx = 0; idx < nodeIds.Count; idx++)352                {353                    if (nodeIds[idx] == this.NodeId)354                    {355                        this.Predecessor = nodes[WrapSubtract(idx, 1, nodeIds.Count)];356                        break;357                    }358                }359                this.RaiseEvent(new Local());360            }361            private void JoinCluster(Event e)362            {363                this.NodeId = (e as Join).Id;364                this.ManagerId = (e as Join).ManagerId;365                this.NumOfIds = (e as Join).NumOfIds;366                var nodes = (e as Join).Nodes;367                var nodeIds = (e as Join).NodeIds;368                for (var idx = 1; idx <= nodes.Count; idx++)369                {370                    var start = (this.NodeId + (int)Math.Pow(2, idx - 1)) % this.NumOfIds;371                    var end = (this.NodeId + (int)Math.Pow(2, idx)) % this.NumOfIds;372                    var nodeId = GetSuccessorNodeId(start, nodeIds);373                    this.FingerTable.Add(start, new Finger(start, end, nodes[nodeId]));374                }375                var successor = this.FingerTable[(this.NodeId + 1) % this.NumOfIds].Node;376                this.SendEvent(this.ManagerId, new JoinAck());377                this.SendEvent(successor, new NotifySuccessor(this.Id));378            }379            [OnEventDoAction(typeof(FindSuccessor), nameof(ProcessFindSuccessor))]380            [OnEventDoAction(typeof(FindSuccessorResp), nameof(ProcessFindSuccessorResp))]381            [OnEventDoAction(typeof(FindPredecessor), nameof(ProcessFindPredecessor))]382            [OnEventDoAction(typeof(FindPredecessorResp), nameof(ProcessFindPredecessorResp))]383            [OnEventDoAction(typeof(QueryId), nameof(ProcessQueryId))]384            [OnEventDoAction(typeof(AskForKeys), nameof(SendKeys))]385            [OnEventDoAction(typeof(AskForKeysResp), nameof(UpdateKeys))]386            [OnEventDoAction(typeof(NotifySuccessor), nameof(UpdatePredecessor))]387            [OnEventDoAction(typeof(Stabilize), nameof(ProcessStabilize))]388            [OnEventDoAction(typeof(Terminate), nameof(ProcessTerminate))]389            private class Waiting : State390            {391            }392            private void ProcessFindSuccessor(Event e)393            {394                var sender = (e as FindSuccessor).Sender;395                var key = (e as FindSuccessor).Key;396                if (this.Keys.Contains(key))397                {398                    this.SendEvent(sender, new FindSuccessorResp(this.Id, key));399                }400                else if (this.FingerTable.ContainsKey(key))401                {402                    this.SendEvent(sender, new FindSuccessorResp(this.FingerTable[key].Node, key));403                }404                else if (this.NodeId.Equals(key))405                {406                    this.SendEvent(sender, new FindSuccessorResp(407                        this.FingerTable[(this.NodeId + 1) % this.NumOfIds].Node, key));408                }409                else410                {411                    int idToAsk = -1;412                    foreach (var finger in this.FingerTable)413                    {414                        if (((finger.Value.Start > finger.Value.End) &&415                            (finger.Value.Start <= key || key < finger.Value.End)) ||416                            ((finger.Value.Start < finger.Value.End) &&417                            finger.Value.Start <= key && key < finger.Value.End))418                        {419                            idToAsk = finger.Key;420                        }421                    }422                    if (idToAsk < 0)423                    {424                        idToAsk = (this.NodeId + 1) % this.NumOfIds;425                    }426                    if (this.FingerTable[idToAsk].Node.Equals(this.Id))427                    {428                        foreach (var finger in this.FingerTable)429                        {430                            if (finger.Value.End == idToAsk ||431                                finger.Value.End == idToAsk - 1)432                            {433                                idToAsk = finger.Key;434                                break;435                            }436                        }437                        this.Assert(!this.FingerTable[idToAsk].Node.Equals(this.Id), "Cannot locate successor of {0}.", key);438                    }439                    this.SendEvent(this.FingerTable[idToAsk].Node, new FindSuccessor(sender, key));440                }441            }442            private void ProcessFindPredecessor(Event e)443            {444                var sender = (e as FindPredecessor).Sender;445                if (this.Predecessor != null)446                {447                    this.SendEvent(sender, new FindPredecessorResp(this.Predecessor));448                }449            }450            private void ProcessQueryId(Event e)451            {452                var sender = (e as QueryId).Sender;453                this.SendEvent(sender, new QueryIdResp(this.NodeId));454            }455            private void SendKeys(Event e)456            {457                var sender = (e as AskForKeys).Node;458                var senderId = (e as AskForKeys).Id;459                this.Assert(this.Predecessor.Equals(sender), "Predecessor is corrupted.");460                List<int> keysToSend = new List<int>();461                foreach (var key in this.Keys)462                {463                    if (key <= senderId)464                    {465                        keysToSend.Add(key);466                    }467                }468                if (keysToSend.Count > 0)469                {470                    foreach (var key in keysToSend)471                    {472                        this.Keys.Remove(key);473                    }474                    this.SendEvent(sender, new AskForKeysResp(keysToSend));475                }476            }477            private void ProcessStabilize()478            {479                var successor = this.FingerTable[(this.NodeId + 1) % this.NumOfIds].Node;480                this.SendEvent(successor, new FindPredecessor(this.Id));481                foreach (var finger in this.FingerTable)482                {483                    if (!finger.Value.Node.Equals(successor))484                    {485                        this.SendEvent(successor, new FindSuccessor(this.Id, finger.Key));486                    }487                }488            }489            private void ProcessFindSuccessorResp(Event e)490            {491                var successor = (e as FindSuccessorResp).Node;492                var key = (e as FindSuccessorResp).Key;493                this.Assert(this.FingerTable.ContainsKey(key), "Finger table of {0} does not contain {1}.", this.NodeId, key);494                this.FingerTable[key] = new Finger(this.FingerTable[key].Start, this.FingerTable[key].End, successor);495            }496            private void ProcessFindPredecessorResp(Event e)497            {498                var successor = (e as FindPredecessorResp).Node;499                if (!successor.Equals(this.Id))500                {501                    this.FingerTable[(this.NodeId + 1) % this.NumOfIds] = new Finger(502                        this.FingerTable[(this.NodeId + 1) % this.NumOfIds].Start,503                        this.FingerTable[(this.NodeId + 1) % this.NumOfIds].End,504                        successor);505                    this.SendEvent(successor, new NotifySuccessor(this.Id));506                    this.SendEvent(successor, new AskForKeys(this.Id, this.NodeId));507                }508            }509            private void UpdatePredecessor(Event e)510            {511                var predecessor = (e as NotifySuccessor).Node;512                if (!predecessor.Equals(this.Id))513                {514                    this.Predecessor = predecessor;515                }516            }517            private void UpdateKeys(Event e)518            {519                var keys = (e as AskForKeysResp).Keys;520                foreach (var key in keys)521                {522                    this.Keys.Add(key);523                }524            }525            private void ProcessTerminate() => this.RaiseHaltEvent();526            private static int GetSuccessorNodeId(int start, List<int> nodeIds)527            {528                var candidate = -1;529                foreach (var id in nodeIds.Where(v => v >= start))530                {531                    if (candidate < 0 || id < candidate)532                    {533                        candidate = id;534                    }535                }536                if (candidate < 0)537                {538                    foreach (var id in nodeIds.Where(v => v < start))539                    {540                        if (candidate < 0 || id < candidate)541                        {542                            candidate = id;543                        }544                    }545                }546                for (int idx = 0; idx < nodeIds.Count; idx++)547                {548                    if (nodeIds[idx] == candidate)549                    {550                        candidate = idx;551                        break;552                    }553                }554                return candidate;555            }556            private static int WrapSubtract(int left, int right, int ceiling)557            {558                int result = left - right;559                if (result < 0)560                {561                    result = ceiling + result;562                }563                return result;564            }565        }566        private class Client : StateMachine567        {568            internal class SetupEvent : Event569            {570                public ActorId ClusterManager;571                public List<int> Keys;572                public SetupEvent(ActorId clusterManager, List<int> keys)573                    : base()574                {575                    this.ClusterManager = clusterManager;576                    this.Keys = keys;577                }578            }579            private class Local : Event580            {581            }582            private ActorId ClusterManager;583            private List<int> Keys;584            private int QueryCounter;585            [Start]586            [OnEntry(nameof(InitOnEntry))]587            [OnEventGotoState(typeof(Local), typeof(Querying))]588            private class Init : State589            {590            }591            private void InitOnEntry(Event e)592            {593                this.ClusterManager = (e as SetupEvent).ClusterManager;594                this.Keys = (e as SetupEvent).Keys;595                // LIVENESS BUG: can never detect the key, and keeps looping without596                // exiting the process. Enable to introduce the bug.597                this.Keys.Add(17);598                this.QueryCounter = 0;599                this.RaiseEvent(new Local());600            }601            [OnEntry(nameof(QueryingOnEntry))]602            [OnEventGotoState(typeof(Local), typeof(Waiting))]603            private class Querying : State604            {605            }606            private void QueryingOnEntry()607            {608                if (this.QueryCounter < 5)609                {610                    if (this.RandomBoolean())611                    {612                        var key = this.GetNextQueryKey();613                        this.Logger.WriteLine($"<ChordLog> Client is searching for successor of key '{key}'.");614                        this.SendEvent(this.ClusterManager, new ChordNode.FindSuccessor(this.Id, key));615                        this.Monitor<LivenessMonitor>(new LivenessMonitor.NotifyClientRequest(key));616                    }617                    else if (this.RandomBoolean())618                    {619                        this.SendEvent(this.ClusterManager, new ClusterManager.CreateNewNode());620                    }621                    else622                    {623                        this.SendEvent(this.ClusterManager, new ClusterManager.TerminateNode());624                    }625                    this.QueryCounter++;626                }627                this.RaiseEvent(new Local());628            }629            private int GetNextQueryKey()630            {631                int keyIndex = -1;632                while (keyIndex < 0)633                {634                    for (int i = 0; i < this.Keys.Count; i++)635                    {636                        if (this.RandomBoolean())637                        {638                            keyIndex = i;639                            break;640                        }641                    }642                }643                return this.Keys[keyIndex];644            }645            [OnEventGotoState(typeof(Local), typeof(Querying))]646            [OnEventDoAction(typeof(ChordNode.FindSuccessorResp), nameof(ProcessFindSuccessorResp))]647            [OnEventDoAction(typeof(ChordNode.QueryIdResp), nameof(ProcessQueryIdResp))]648            private class Waiting : State649            {650            }651            private void ProcessFindSuccessorResp(Event e)652            {653                var successor = (e as ChordNode.FindSuccessorResp).Node;654                var key = (e as ChordNode.FindSuccessorResp).Key;655                this.Monitor<LivenessMonitor>(new LivenessMonitor.NotifyClientResponse(key));656                this.SendEvent(successor, new ChordNode.QueryId(this.Id));657            }658            private void ProcessQueryIdResp() => this.RaiseEvent(new Local());659        }660        private class LivenessMonitor : Monitor661        {662            public class NotifyClientRequest : Event663            {664                public int Key;665                public NotifyClientRequest(int key)666                    : base()667                {668                    this.Key = key;669                }670            }671            public class NotifyClientResponse : Event672            {673                public int Key;674                public NotifyClientResponse(int key)675                    : base()676                {677                    this.Key = key;678                }679            }680            [Start]681            [OnEntry(nameof(InitOnEntry))]682            private class Init : State683            {684            }685            private void InitOnEntry() => this.RaiseGotoStateEvent<Responded>();686            [Cold]687            [OnEventGotoState(typeof(NotifyClientRequest), typeof(Requested))]688            private class Responded : State689            {690            }691            [Hot]692            [OnEventGotoState(typeof(NotifyClientResponse), typeof(Responded))]693            private class Requested : State694            {695            }696        }697        [Theory(Timeout = 10000)]698        [InlineData(20)]699        public void TestLivenessBugInChordProtocol(uint seed)...

InitOnEntry

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6using Microsoft.Coyote.Actors.BugFinding.Tests.Response;7using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test;8using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test;9using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test;10using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test.Test;11using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test.Test.Test;12using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test.Test.Test.Test;13using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test.Test.Test.Test.Test;14using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test.Test.Test.Test.Test.Test;15using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Test.Test.Test.Test.Test.Test.Test.Test.Test;

InitOnEntry

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6{7    {8        static void Main(string[] args)9        {10            Runtime.RegisterMonitor(typeof(Response));11            Runtime.RegisterMonitor(typeof(Response), new Response.Configuration(1));12            using (var runtime = RuntimeFactory.Create())13            {14                var id = runtime.CreateActor(typeof(Server));15                runtime.SendEvent(id, new Start());16                runtime.Wait();17            }18        }19    }20    class Start : Event { }21    class Stop : Event { }22    {23        protected override Task OnInitializeAsync(Event initialEvent)24        {25            this.SendEvent(this.Id, new Stop());26            return Task.CompletedTask;27        }28        protected override Task OnEventAsync(Event e)29        {30            if (e is Start)31            {32                this.SendEvent(this.Id, new Stop());33            }34            else if (e is Stop)35            {36                this.SendEvent(this.Id, new Start());37            }38            return Task.CompletedTask;39        }40    }41}42Runtime.RegisterMonitor(typeof(Response), new Response.Configuration(1));

InitOnEntry

Using AI Code Generation

1{2    {3        static void Main(string[] args)4        {5            var runtime = RuntimeFactory.Create();6            runtime.CreateActor(typeof(Response));7            runtime.SendEvent(1, new E());8            runtime.SendEvent(1, new E());9            Console.WriteLine("Hello World!");10        }11    }12}13{14    {15        static void Main(string[] args)16        {17            var runtime = RuntimeFactory.Create();18            runtime.CreateActor(typeof(Response));19            runtime.SendEvent(1, new E());20            runtime.SendEvent(1, new E());21            Console.WriteLine("Hello World!");22        }23    }24}25{26    {27        static void Main(string[] args)28        {29            var runtime = RuntimeFactory.Create();30            runtime.CreateActor(typeof(Response));31            runtime.SendEvent(1, new E());32            runtime.SendEvent(1, new E());33            Console.WriteLine("Hello World!");34        }35    }36}37{38    {39        static void Main(string[] args)40        {41            var runtime = RuntimeFactory.Create();42            runtime.CreateActor(typeof(Response));43            runtime.SendEvent(1, new E());44            runtime.SendEvent(1, new E());45            Console.WriteLine("Hello World!");46        }47    }48}49{50    {51        static void Main(string[] args)52        {53            var runtime = RuntimeFactory.Create();54            runtime.CreateActor(typeof(Response));55            runtime.SendEvent(1, new E());56            runtime.SendEvent(1, new E());57            Console.WriteLine("Hello World!");58        }59    }60}

InitOnEntry

Using AI Code Generation

1{2    {3        public static void InitOnEntry()4        {5        }6    }7}8{9    {10        public static void InitOnEntry()11        {12        }13    }14}15The error is “The type or namespace name ‘Response’ could not be found (are you missing a using directive or an assembly reference?).”16using Microsoft.Coyote.Actors.BugFinding.Tests;17This is a guide to Solve Error “The type or namespace name ‘Response’ could not be found (are you missing a using directive or an assembly reference?).” In C#. Here we discuss how to solve The type or namespace name ‘Response’ could not be found (are you missing a using directive or an assembly reference?). along with practical examples. You may also l

InitOnEntry

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6using Microsoft.Coyote.Actors.BugFinding.Tests.Response;7using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor1;8using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor2;9using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor3;10using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor4;11using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor5;12using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor6;13using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor7;14using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor8;15using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor9;16using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor10;17using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor11;18using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor12;19using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor13;20using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor14;21using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor15;22using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor16;23using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor17;24using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor18;25using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor19;26using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor20;27using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor21;28using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor22;29using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor23;30using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor24;31using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor25;32using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor26;33using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor27;34using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor28;35using Microsoft.Coyote.Actors.BugFinding.Tests.Response.Actor29;

InitOnEntry

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote.Actors;4{5    {6        private int value;7        private bool flag;8        private int counter;9        private TaskCompletionSource<bool> tcs;10        private TaskCompletionSource<bool> tcs1;11        [OnEntry(nameof(InitOnEntry))]12        [OnEventDoAction(typeof(UnitEvent), nameof(InitOnEvent))]13        [OnEventDoAction(typeof(ResetEvent), nameof(Reset))]14        {15        }16        private void InitOnEntry()17        {18            this.value = 0;19            this.flag = false;20            this.counter = 0;21            this.tcs = new TaskCompletionSource<bool>();22            this.tcs1 = new TaskCompletionSource<bool>();23            this.RaiseEvent(new UnitEvent());24        }25        private void InitOnEvent()26        {27            if (this.counter == 0)28            {29                this.counter++;30                this.CreateActor(typeof(Server));31                this.RaiseEvent(new UnitEvent());32            }33            {34                this.SendEvent(this.Id, new UnitEvent());35            }36        }37        private void Reset()38        {39            this.value = 0;40            this.flag = false;41            this.counter = 0;42            this.tcs = new TaskCompletionSource<bool>();43            this.tcs1 = new TaskCompletionSource<bool>();44            this.RaiseEvent(new UnitEvent());45        }46        {47        }48        {49        }50        {51            private int value;52            private bool flag;53            private int counter;54            private TaskCompletionSource<bool> tcs;55            private TaskCompletionSource<bool> tcs1;56            [OnEntry(nameof(InitOnEntry))]57            [OnEventDoAction(typeof(UnitEvent), nameof(InitOnEvent))]58            [OnEventDoAction(typeof(ResetEvent), nameof(Reset))]59            [OnEventDoAction(typeof(UnitEvent), nameof(Update))]60            {61            }62            private void InitOnEntry()63            {64                this.value = 0;65                this.flag = false;66                this.counter = 0;67                this.tcs = new TaskCompletionSource<bool>();

InitOnEntry

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using Microsoft.Coyote.Actors;6using Microsoft.Coyote.Actors.BugFinding.Tests;7{8    {9        static void Main(string[] args)10        {11            ActorRuntime.RegisterActor(typeof(Response));12            ActorRuntime.RegisterActor(typeof(InitOnEntry));13            ActorRuntime.RegisterActor(typeof(InitOnEvent));14            ActorRuntime.RegisterActor(typeof(InitOnReceive));15            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent));16            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent2));17            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent3));18            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent4));19            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent5));20            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent6));21            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent7));22            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent8));23            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent9));24            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent10));25            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent11));26            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent12));27            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent13));28            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent14));29            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent15));30            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent16));31            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent17));32            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent18));33            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent19));34            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent20));35            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent21));36            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent22));37            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent23));38            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent24));39            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent25));40            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent26));41            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent27));42            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent28));43            ActorRuntime.RegisterActor(typeof(InitOnReceiveEvent29));44            ActorRuntime.RegisterActor(typeof(

InitOnEntry

Using AI Code Generation

1var actor = new Microsoft.Coyote.Actors.BugFinding.Tests.Response("OK");2actor.InitOnEntry();3await actor.ReceiveEventAsync(typeof(Microsoft.Coyote.Actors.BugFinding.Tests.ResponseEvent));4actor.Dispose();5var actor = new Microsoft.Coyote.Actors.BugFinding.Tests.Response("OK");6actor.InitOnEntry();7await actor.ReceiveEventAsync(typeof(Microsoft.Coyote.Actors.BugFinding.Tests.ResponseEvent));8actor.Dispose();9var actor = new Microsoft.Coyote.Actors.BugFinding.Tests.Response("OK");10actor.InitOnEntry();11await actor.ReceiveEventAsync(typeof(Microsoft.Coyote.Actors.BugFinding.Tests.ResponseEvent));12actor.Dispose();13var actor = new Microsoft.Coyote.Actors.BugFinding.Tests.Response("OK");14actor.InitOnEntry();15await actor.ReceiveEventAsync(typeof(Microsoft.Coyote.Actors.BugFinding.Tests.ResponseEvent));16actor.Dispose();17var actor = new Microsoft.Coyote.Actors.BugFinding.Tests.Response("OK");18actor.InitOnEntry();19await actor.ReceiveEventAsync(typeof(Microsoft.Coyote.Actors.BugFinding.Tests.ResponseEvent));20actor.Dispose();21var actor = new Microsoft.Coyote.Actors.BugFinding.Tests.Response("OK");22actor.InitOnEntry();23await actor.ReceiveEventAsync(typeof(Microsoft.Coyote.Actors.BugFinding.Tests.ResponseEvent));24actor.Dispose();

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.