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Coyote
Microsoft.Coyote.Samples.DrinksServingRobot
LivenessMonitor

How to use LivenessMonitor class of Microsoft.Coyote.Samples.DrinksServingRobot package

Best Coyote code snippet using Microsoft.Coyote.Samples.DrinksServingRobot.LivenessMonitor

Robot.cs

Source:Robot.cs

...75                        // stop any current driving and wait for DrinkOrderProducedEvent from new navigator76                        // as it restarts the previous drink order request.77                        this.StopMoving();78                        this.RaiseGotoStateEvent<Active>();79                        this.Monitor<LivenessMonitor>(new LivenessMonitor.IdleEvent());80                    }81                }82                this.SendEvent(this.CreatorId, new NavigatorResetEvent());83            }84        }85        [OnEntry(nameof(OnInitActive))]86        [OnEventGotoState(typeof(Navigator.DrinkOrderProducedEvent), typeof(ExecutingOrder))]87        [OnEventDoAction(typeof(Navigator.DrinkOrderConfirmedEvent), nameof(OnDrinkOrderConfirmed))]88        internal class Active : State { }89        private void OnInitActive()90        {91            if (!this.DrinkOrderPending)92            {93                this.SendEvent(this.NavigatorId, new Navigator.GetDrinkOrderEvent(this.GetPicture()));94                this.Log.WriteLine("<Robot> Asked for a new Drink Order");95            }96            this.Monitor<LivenessMonitor>(new LivenessMonitor.BusyEvent());97        }98        private void OnDrinkOrderConfirmed()99        {100            this.DrinkOrderPending = true;101            this.SendEvent(this.CreatorId, new RobotReadyEvent());102        }103        public RoomPicture GetPicture()104        {105            var now = DateTime.UtcNow;106            this.Log.WriteLine($"<Robot> Obtained a Room Picture at {now} UTC");107            return new RoomPicture() { TimeTaken = now, Image = ReadCamera() };108        }109        private static byte[] ReadCamera()110        {111            return new byte[1]; // todo: plug in real camera code here.112        }113        [OnEntry(nameof(OnInitExecutingOrder))]114        [OnEventGotoState(typeof(DrivingInstructionsEvent), typeof(ReachingClient))]115        internal class ExecutingOrder : State { }116        private void OnInitExecutingOrder(Event e)117        {118            this.CurrentOrder = (e as Navigator.DrinkOrderProducedEvent)?.DrinkOrder;119            if (this.CurrentOrder != null)120            {121                this.Log.WriteLine("<Robot> Received new Drink Order. Executing ...");122                this.ExecuteOrder();123            }124        }125        private void ExecuteOrder()126        {127            var clientLocation = this.CurrentOrder.ClientDetails.Coordinates;128            this.Log.WriteLine($"<Robot> Asked for driving instructions from {this.Coordinates} to {clientLocation}");129            this.SendEvent(this.NavigatorId, new Navigator.GetDrivingInstructionsEvent(this.Coordinates, clientLocation));130            this.Monitor<LivenessMonitor>(new LivenessMonitor.BusyEvent());131        }132        [OnEntry(nameof(ReachClient))]133        internal class ReachingClient : State { }134        private void ReachClient(Event e)135        {136            var route = (e as DrivingInstructionsEvent)?.Route;137            if (route != null)138            {139                this.Route = route;140                // this.DrinkOrderPending = false; // this is where it really belongs.141                this.Timers["MoveTimer"] = this.StartTimer(TimeSpan.FromSeconds(MoveDuration), new MoveTimerElapsedEvent());142            }143            this.RaiseGotoStateEvent<MovingOnRoute>();144        }145        [OnEventDoAction(typeof(MoveTimerElapsedEvent), nameof(NextMove))]146        [IgnoreEvents(typeof(Navigator.DrinkOrderProducedEvent))]147        internal class MovingOnRoute : State { }148        private void NextMove()149        {150            this.DrinkOrderPending = false;151            if (this.Route == null)152            {153                return;154            }155            if (!this.Route.Any())156            {157                this.StopMoving();158                this.RaiseGotoStateEvent<ServingClient>();159                this.Log.WriteLine("<Robot> Reached Client.");160                Specification.Assert(161                    this.Coordinates == this.CurrentOrder.ClientDetails.Coordinates,162                    "Having reached the Client the Robot's coordinates must be the same as the Client's, but they aren't");163            }164            else165            {166                var nextDestination = this.Route[0];167                this.Route.RemoveAt(0);168                this.MoveTo(nextDestination);169                this.Timers["MoveTimer"] = this.StartTimer(TimeSpan.FromSeconds(MoveDuration), new MoveTimerElapsedEvent());170            }171        }172        private void StopMoving()173        {174            this.Route = null;175            this.DestroyTimer("MoveTimer");176        }177        private void DestroyTimer(string name)178        {179            if (this.Timers.TryGetValue(name,  out TimerInfo info))180            {181                this.StopTimer(info);182                this.Timers.Remove(name);183            }184        }185        private void MoveTo(Location there)186        {187            this.Log.WriteLine($"<Robot> Moving from {this.Coordinates} to {there}");188            this.Coordinates = there;189        }190        [OnEntry(nameof(ServeClient))]191        internal class ServingClient : State { }192        private void ServeClient()193        {194            this.Log.WriteLine("<Robot> Serving order");195            var drinkType = this.SelectDrink();196            var glassOfDrink = this.GetFullFlass(drinkType);197            this.FinishOrder();198        }199        private void FinishOrder()200        {201            this.Log.WriteLine("<Robot> Finished serving the order. Retreating.");202            this.Log.WriteLine("==================================================");203            this.Log.WriteLine(string.Empty);204            this.MoveTo(StartingLocation);205            this.CurrentOrder = null;206            this.Monitor<LivenessMonitor>(new LivenessMonitor.IdleEvent());207            if (this.RunForever)208            {209                this.RaiseGotoStateEvent<Active>();210            }211            else212            {213                this.RaiseGotoStateEvent<FinishState>();214            }215        }216        private DrinkType SelectDrink()217        {218            var clientType = this.CurrentOrder.ClientDetails.PersonType;219            var selectedDrink = this.GetRandomDrink(clientType);220            this.Log.WriteLine($"<Robot> Selected \"{selectedDrink}\" for {clientType} client");221            return selectedDrink;222        }223        private Glass GetFullFlass(DrinkType drinkType)224        {225            var fillLevel = 100;226            this.Log.WriteLine($"<Robot> Filled a new glass of {drinkType} to {fillLevel}% level");227            return new Glass(drinkType, fillLevel);228        }229        private DrinkType GetRandomDrink(PersonType drinkerType)230        {231            var appropriateDrinks = drinkerType == PersonType.Adult232                ? Drinks.ForAdults233                : Drinks.ForMinors;234            return appropriateDrinks[this.RandomInteger(appropriateDrinks.Count)];235        }236        [OnEntry(nameof(Finish))]237        internal class FinishState : State { }238        private void Finish()239        {240            this.Monitor<LivenessMonitor>(new LivenessMonitor.IdleEvent());241            this.SendEvent(this.Id, HaltEvent.Instance);242        }243        protected override Task OnEventUnhandledAsync(Event e, string state)244        {245            // this can be handy for debugging.246            return base.OnEventUnhandledAsync(e, state);247        }248    }249}...

Program.cs

Source:Program.cs

...21        [Microsoft.Coyote.SystematicTesting.Test]22        public static void Execute(IActorRuntime runtime)23        {24            LogWriter.Initialize(runtime.Logger, RunForever);25            runtime.RegisterMonitor<LivenessMonitor>();26            ActorId driver = runtime.CreateActor(typeof(FailoverDriver), new FailoverDriver.ConfigEvent(RunForever));27        }28        private static void OnRuntimeFailure(Exception ex)29        {30            LogWriter.Instance.WriteError("### Error: {0}", ex.Message);31        }32    }33}...

LivenessMonitor.cs

Source:LivenessMonitor.cs

...6    /// <summary>7    /// This monitors the Robot and the Navigator to make sure the Robot always finishes the job,8    /// by serving a Drink.9    /// </summary>10    internal class LivenessMonitor : Monitor11    {12        public class BusyEvent : Event { }13        public class IdleEvent : Event { }14        [Start]15        [Cold]16        [OnEventGotoState(typeof(BusyEvent), typeof(Busy))]17        [IgnoreEvents(typeof(IdleEvent))]18        private class Idle : State { }19        [Hot]20        [OnEventGotoState(typeof(IdleEvent), typeof(Idle))]21        [IgnoreEvents(typeof(BusyEvent))]22        private class Busy : State { }23    }24}...

LivenessMonitor

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Threading.Tasks;5using Microsoft.Coyote;6using Microsoft.Coyote.Actors;7using Microsoft.Coyote.Samples.DrinksServingRobot;8{9    {10        [OnEventGotoState(typeof(StartMonitoring), typeof(Monitoring))]11        class Init : MachineState { }12        [OnEventDoAction(typeof(StopMonitoring), nameof(StopMonitoringAction))]13        [OnEventDoAction(typeof(StopMonitoring), nameof(StopMonitoringAction))]14        [OnEventGotoState(typeof(StopMonitoring), typeof(Stopped))]15        class Monitoring : MachineState { }16        [OnEventDoAction(typeof(StartMonitoring), nameof(StartMonitoringAction))]17        [OnEventGotoState(typeof(StartMonitoring), typeof(Monitoring))]18        class Stopped : MachineState { }19        private void StopMonitoringAction(Event e)20        {21            this.Assert(false, "Liveness property violated!");22        }23        private void StartMonitoringAction(Event e)24        {25            this.Assert(false, "Liveness property violated!");26        }27    }28}29using System;30using System.Collections.Generic;31using System.Linq;32using System.Threading.Tasks;33using Microsoft.Coyote;34using Microsoft.Coyote.Actors;35using Microsoft.Coyote.Samples.DrinksServingRobot;36{37    {38        [OnEventGotoState(typeof(StartMonitoring), typeof(Monitoring))]39        class Init : MachineState { }40        [OnEventDoAction(typeof(StopMonitoring), nameof(StopMonitoringAction))]41        [OnEventDoAction(typeof(StopMonitoring), nameof(StopMonitoringAction))]42        [OnEventGotoState(typeof(StopMonitoring), typeof(Stopped))]43        class Monitoring : MachineState { }44        [OnEventDoAction(typeof(StartMonitoring), nameof(StartMonitoringAction))]45        [OnEventGotoState(typeof(StartMonitoring), typeof(Monitoring))]46        class Stopped : MachineState { }47        private void StopMonitoringAction(Event e)48        {49            this.Assert(false

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring;3using Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring.Events;4using System;5using System.Collections.Generic;6using System.Linq;7using System.Text;8using System.Threading.Tasks;9{10    {11        static void Main(string[] args)12        {13            var monitor = new LivenessMonitor();14            monitor.Start();15            monitor.RaiseEvent(new RobotStartedEvent());16            monitor.RaiseEvent(new RobotStartedEvent());

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring;3using Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring.Events;4using Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring.Machines;5using static Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring.Machines.MonitoringMachine;6{7    {8        private bool _isRobotAlive;9        private bool _isRobotIdle;10        [OnEventDoAction(typeof(RobotInitialized), nameof(Initialize))]11        [OnEventDoAction(typeof(RobotIsAlive), nameof(RobotIsAlive))]12        [OnEventDoAction(typeof(RobotIsIdle), nameof(RobotIsIdle))]13        [OnEventDoAction(typeof(RobotIsBusy), nameof(RobotIsBusy))]14        [OnEventDoAction(typeof(RobotIsDead), nameof(RobotIsDead))]15        private class Init : MonitorState { }16        private void Initialize()17        {18            this._isRobotAlive = false;19            this._isRobotIdle = false;20        }21        private void RobotIsAlive()22        {23            this._isRobotAlive = true;24        }25        private void RobotIsIdle()26        {27            this._isRobotIdle = true;28        }29        private void RobotIsBusy()30        {31            this._isRobotIdle = false;32        }33        private void RobotIsDead()34        {35            this._isRobotAlive = false;36        }37        [OnEventGotoState(typeof(RobotInitialized), typeof(Init))]38        [OnEventGotoState(typeof(RobotIsAlive), typeof(Init))]39        [OnEventGotoState(typeof(RobotIsIdle), typeof(Init))]40        [OnEventGotoState(typeof(RobotIsBusy), typeof(Init))]41        [OnEventGotoState(typeof(RobotIsDead), typeof(Init))]42        private class Cold : MonitorState { }43        [OnEventGotoState(typeof(RobotInitialized), typeof(Init))]44        [OnEventGotoState(typeof(RobotIsAlive), typeof(Init))]45        [OnEventGotoState(typeof(RobotIsIdle), typeof(Init))]

LivenessMonitor

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Samples.DrinksServingRobot;6{7    {8        static void Main(string[] args)9        {10            using (var runtime = RuntimeFactory.Create())11            {12                var robot = runtime.CreateActor(typeof(Robot));13                var monitor = runtime.CreateActor(typeof(LivenessMonitor), robot);14                runtime.SendEvent(robot, new Start());15                Console.ReadLine();16            }17        }18    }19}20using System;21using System.Threading.Tasks;22using Microsoft.Coyote;23using Microsoft.Coyote.Actors;24using Microsoft.Coyote.Samples.DrinksServingRobot;25{26    {27        static void Main(string[] args)28        {29            using (var runtime = RuntimeFactory.Create())30            {31                var robot = runtime.CreateActor(typeof(Robot));32                var monitor = runtime.CreateActor(typeof(LivenessMonitor), robot);33                runtime.SendEvent(robot, new Start());34                Console.ReadLine();35            }36        }37    }38}39using System;40using System.Threading.Tasks;41using Microsoft.Coyote;42using Microsoft.Coyote.Actors;43using Microsoft.Coyote.Samples.DrinksServingRobot;44{45    {46        static void Main(string[] args)47        {48            using (var runtime = RuntimeFactory.Create())49            {50                var robot = runtime.CreateActor(typeof(Robot));51                var monitor = runtime.CreateActor(typeof(LivenessMonitor), robot);

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using Microsoft.Coyote.Samples.DrinksServingRobot;3using Microsoft.Coyote.Samples.DrinksServingRobot;4using Microsoft.Coyote.Samples.DrinksServingRobot;5using Microsoft.Coyote.Samples.DrinksServingRobot;6using Microsoft.Coyote.Samples.DrinksServingRobot;7using Microsoft.Coyote.Samples.DrinksServingRobot;8using Microsoft.Coyote.Samples.DrinksServingRobot;9using Microsoft.Coyote.Samples.DrinksServingRobot;10using Microsoft.Coyote.Samples.DrinksServingRobot;11using Microsoft.Coyote.Samples.DrinksServingRobot;12using Microsoft.Coyote.Samples.DrinksServingRobot;13using Microsoft.Coyote.Samples.DrinksServingRobot;14using Microsoft.Coyote.Samples.DrinksServingRobot;

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using Microsoft.Coyote.Samples.DrinksServingRobot.Monitoring;3using Microsoft.Coyote.Samples.DrinksServingRobot.Robot;4using System;5using System.Threading.Tasks;6{7    {8        public static async Task Main()9        {10            var monitor = new LivenessMonitor();11            var robot = new DrinksServingRobot(monitor);12            await robot.Run();13        }14    }15}

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var monitor = new LivenessMonitor();9            monitor.Start();10            await Task.Delay(5000);11            monitor.Stop();12        }13    }14}15using Microsoft.Coyote.Samples.DrinksServingRobot;16using System;17using System.Threading;18{19    {20        public void Start()21        {22            var robot = new DrinksServingRobot();23            var thread = new Thread(() =>24            {25                while (true)26                {27                    if (robot.IsDead)28                    {29                        Console.WriteLine("Robot is dead. Shutting down the robot...");30                        robot.Shutdown();31                        break;32                    }33                }34            });35            thread.Start();36        }37        public void Stop()38        {39            Console.WriteLine("Liveness monitor stopped.");40        }41    }42}

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using System;3using System.Threading.Tasks;4{5    {6        static void Main(string[] args)7        {8            var livenessMonitor = new LivenessMonitor();9            livenessMonitor.Start();10            Console.WriteLine("Press any key to stop.");11            Console.ReadLine();12            livenessMonitor.Stop();13        }14    }15}16using Microsoft.Coyote.Samples.DrinksServingRobot;17using System;18using System.Threading.Tasks;19{20    {21        static void Main(string[] args)22        {23            var livenessMonitor = new LivenessMonitor();24            livenessMonitor.Start();25            Console.WriteLine("Press any key to stop.");26            Console.ReadLine();27            livenessMonitor.Stop();28        }29    }30}31using Microsoft.Coyote.Samples.DrinksServingRobot;32using System;33using System.Threading.Tasks;34{35    {36        static void Main(string[] args)37        {38            var livenessMonitor = new LivenessMonitor();39            livenessMonitor.Start();40            Console.WriteLine("Press any key to stop.");41            Console.ReadLine();42            livenessMonitor.Stop();43        }44    }45}46using Microsoft.Coyote.Samples.DrinksServingRobot;47using System;48using System.Threading.Tasks;49{50    {51        static void Main(string[] args)52        {53            var livenessMonitor = new LivenessMonitor();54            livenessMonitor.Start();55            Console.WriteLine("Press any key to stop.");56            Console.ReadLine();57            livenessMonitor.Stop();58        }59    }60}61using Microsoft.Coyote.Samples.DrinksServingRobot;62using System;63using System.Threading.Tasks;64{65    {

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2using System;3using System.Threading.Tasks;4{5    {6        static void Main(string[] args)7        {8            Console.WriteLine("Hello World!");9            LivenessMonitor livenessMonitor = new LivenessMonitor();10            Task.Run(() => livenessMonitor.Run());11            Console.ReadLine();12        }13    }14}

LivenessMonitor

Using AI Code Generation

1using Microsoft.Coyote.Samples.DrinksServingRobot;2{3    {4        static void Main(string[] args)5        {6            var monitor = new LivenessMonitor();7            monitor.Run();8        }9    }10}11using Microsoft.Coyote.Samples.DrinksServingRobot;12{13    {14        static void Main(string[] args)15        {16            var monitor = new LivenessMonitor();17            monitor.Run();18        }19    }20}21using Microsoft.Coyote.Samples.DrinksServingRobot;22{23    {24        static void Main(string[] args)25        {26            var monitor = new LivenessMonitor();27            monitor.Run();28        }29    }30}31using Microsoft.Coyote.Samples.DrinksServingRobot;32{33    {34        static void Main(string[] args)35        {36            var monitor = new LivenessMonitor();37            monitor.Run();38        }39    }40}41using Microsoft.Coyote.Samples.DrinksServingRobot;42{43    {44        static void Main(string[] args)45        {46            var monitor = new LivenessMonitor();47            monitor.Run();48        }49    }50}51using Microsoft.Coyote.Samples.DrinksServingRobot;52{53    {54        static void Main(string[] args)55        {56            var monitor = new LivenessMonitor();57            monitor.Run();58        }59    }60}

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