├── AkkaAndWpfExample.ThermostatUI
    ├── App.config
    ├── Properties
    │   ├── Settings.settings
    │   ├── Settings.Designer.cs
    │   ├── AssemblyInfo.cs
    │   ├── Resources.Designer.cs
    │   └── Resources.resx
    ├── packages.config
    ├── App.xaml.cs
    ├── App.xaml
    ├── MainWindow.xaml.cs
    ├── ViewModel
    │   ├── MainViewModel.cs
    │   └── ViewModelLocator.cs
    ├── MainWindow.xaml
    └── AkkaAndWpfExample.ThermostatUI.csproj
├── AkkaAndWpfExample.ThermostatSystem
    ├── packages.config
    ├── ThermostatSystem.cs
    ├── Actors
    │   ├── PubSubActor.cs
    │   ├── TemperatureSensorActor.cs
    │   └── ThermostatActor.cs
    ├── Properties
    │   └── AssemblyInfo.cs
    └── AkkaAndWpfExample.ThermostatSystem.csproj
├── LICENSE
├── AkkaAndWpfExample.sln
├── .gitignore
└── README.md


/AkkaAndWpfExample.ThermostatUI/App.config:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8" ?>
2 | <configuration>
3 |     <startup> 
4 |         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
5 |     </startup>
6 | </configuration>


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/Properties/Settings.settings:
--------------------------------------------------------------------------------
1 | <?xml version='1.0' encoding='utf-8'?>
2 | <SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
3 |   <Profiles>
4 |     <Profile Name="(Default)" />
5 |   </Profiles>
6 |   <Settings />
7 | </SettingsFile>


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatSystem/packages.config:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <packages>
3 |   <package id="Akka" version="1.0.6" targetFramework="net461" />
4 |   <package id="CommonServiceLocator" version="1.3" targetFramework="net461" />
5 |   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net461" />
6 | </packages>


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/packages.config:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <packages>
3 |   <package id="CommonServiceLocator" version="1.3" targetFramework="net461" />
4 |   <package id="MvvmLight" version="5.2.0.0" targetFramework="net461" />
5 |   <package id="MvvmLightLibs" version="5.2.0.0" targetFramework="net461" />
6 | </packages>


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/AkkaAndWpfExample.ThermostatUI/App.xaml.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Collections.Generic;
 3 | using System.Configuration;
 4 | using System.Data;
 5 | using System.Linq;
 6 | using System.Threading.Tasks;
 7 | using System.Windows;
 8 | 
 9 | namespace AkkaAndWpfExample.ThermostatUI
10 | {
11 |     /// <summary>
12 |     /// Interaction logic for App.xaml
13 |     /// </summary>
14 |     public partial class App : Application
15 |     {
16 |     }
17 | }
18 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatSystem/ThermostatSystem.cs:
--------------------------------------------------------------------------------
 1 | using Akka.Actor;
 2 | 
 3 | namespace WpfAkkaIntegration.ThermostatSystem
 4 | {
 5 |     public class ThermostatSystem
 6 |     {
 7 |         private ActorSystem _system;
 8 |         private IActorRef _thermostatActor;
 9 | 
10 |         public ThermostatSystem()
11 |         {
12 |             _system = ActorSystem.Create(nameof(ThermostatSystem));
13 |             _thermostatActor = CreateThermostatActor();
14 |         }
15 | 
16 |         private IActorRef CreateThermostatActor()
17 |         {
18 |             var props = Props.Create<Actors.ThermostatActor>();
19 |             return _system.ActorOf(props, "thermostat");
20 |         }
21 |     }
22 | }
23 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/App.xaml:
--------------------------------------------------------------------------------
1 | <Application x:Class="AkkaAndWpfExample.ThermostatUI.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:AkkaAndWpfExample.ThermostatUI" StartupUri="MainWindow.xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" d1p1:Ignorable="d" xmlns:d1p1="http://schemas.openxmlformats.org/markup-compatibility/2006">
2 |     <Application.Resources>
3 |         <ResourceDictionary>
4 |             <vm:ViewModelLocator x:Key="Locator" d:IsDataSource="True" xmlns:vm="clr-namespace:AkkaAndWpfExample.ThermostatUI.ViewModel" />
5 |         </ResourceDictionary>
6 |     </Application.Resources>
7 | </Application>


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/MainWindow.xaml.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Collections.Generic;
 3 | using System.Linq;
 4 | using System.Text;
 5 | using System.Threading.Tasks;
 6 | using System.Windows;
 7 | using System.Windows.Controls;
 8 | using System.Windows.Data;
 9 | using System.Windows.Documents;
10 | using System.Windows.Input;
11 | using System.Windows.Media;
12 | using System.Windows.Media.Imaging;
13 | using System.Windows.Navigation;
14 | using System.Windows.Shapes;
15 | 
16 | namespace AkkaAndWpfExample.ThermostatUI
17 | {
18 |     /// <summary>
19 |     /// Interaction logic for MainWindow.xaml
20 |     /// </summary>
21 |     public partial class MainWindow : Window
22 |     {
23 |         public MainWindow()
24 |         {
25 |             InitializeComponent();
26 |         }
27 |     }
28 | }
29 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2016 Aaron Lenoir
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/Properties/Settings.Designer.cs:
--------------------------------------------------------------------------------
 1 | //------------------------------------------------------------------------------
 2 | // <auto-generated>
 3 | //     This code was generated by a tool.
 4 | //     Runtime Version:4.0.30319.42000
 5 | //
 6 | //     Changes to this file may cause incorrect behavior and will be lost if
 7 | //     the code is regenerated.
 8 | // </auto-generated>
 9 | //------------------------------------------------------------------------------
10 | 
11 | namespace AkkaAndWpfExample.ThermostatUI.Properties
12 | {
13 | 
14 | 
15 |     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
16 |     [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
17 |     internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
18 |     {
19 | 
20 |         private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
21 | 
22 |         public static Settings Default
23 |         {
24 |             get
25 |             {
26 |                 return defaultInstance;
27 |             }
28 |         }
29 |     }
30 | }
31 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/ViewModel/MainViewModel.cs:
--------------------------------------------------------------------------------
 1 | using GalaSoft.MvvmLight;
 2 | using GalaSoft.MvvmLight.CommandWpf;
 3 | 
 4 | namespace AkkaAndWpfExample.ThermostatUI.ViewModel
 5 | {
 6 |     public class MainViewModel : ViewModelBase
 7 |     {
 8 |         public MainViewModel()
 9 |         {
10 |         }
11 | 
12 |         public RelayCommand IncreaseTargetTemperature { get; private set; }
13 | 
14 |         public RelayCommand DecreaseTargetTemperature { get; private set; }
15 | 
16 |         private double _temperature = 20;
17 |         public double Temperature
18 |         {
19 |             get
20 |             {
21 |                 return _temperature;
22 |             }
23 |             set
24 |             {
25 |                 _temperature = value;
26 |                 RaisePropertyChanged<double>(nameof(Temperature));
27 |             }
28 |         }
29 | 
30 |         private double _targetTemperature = 21;
31 |         public double TargetTemperature
32 |         {
33 |             get
34 |             {
35 |                 return _targetTemperature;
36 |             }
37 |             set
38 |             {
39 |                 _targetTemperature = value;
40 |                 RaisePropertyChanged<double>(nameof(TargetTemperature));
41 |             }
42 |         }
43 |     }
44 | }


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatSystem/Actors/PubSubActor.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Threading.Tasks;
 3 | using Akka.Actor;
 4 | using System.Collections.Generic;
 5 | 
 6 | namespace WpfAkkaIntegration.ThermostatSystem.Actors
 7 | {
 8 |     public class PubSubActor : ReceiveActor
 9 |     {
10 | 
11 |         #region Messages
12 | 
13 |         public class Subscribe
14 |         {
15 |             public IActorRef Subscriber { get; private set; }
16 |             public Subscribe(IActorRef subscriber)
17 |             {
18 |                 Subscriber = subscriber;
19 |             }
20 |         }
21 | 
22 |         #endregion
23 | 
24 |         #region States
25 | 
26 |         public void AcceptSubscribers()
27 |         {
28 |             Receive<Subscribe>(message => handleSubscribe(message));
29 |         }
30 | 
31 |         #endregion
32 | 
33 |         #region State
34 | 
35 |         private List<IActorRef> _subscribers = new List<IActorRef>();
36 | 
37 |         #endregion
38 | 
39 |         #region Handlers
40 | 
41 |         private void handleSubscribe(Subscribe message)
42 |         {
43 |             _subscribers.Add(message.Subscriber);
44 |         }
45 | 
46 |         #endregion
47 | 
48 |         public void Publish(object message)
49 |         {
50 |             foreach(var subscriber in _subscribers)
51 |             {
52 |                 subscriber.Tell(message);
53 |             }
54 |         }
55 |     }
56 | }
57 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatSystem/Properties/AssemblyInfo.cs:
--------------------------------------------------------------------------------
 1 | using System.Reflection;
 2 | using System.Runtime.CompilerServices;
 3 | using System.Runtime.InteropServices;
 4 | 
 5 | // General Information about an assembly is controlled through the following 
 6 | // set of attributes. Change these attribute values to modify the information
 7 | // associated with an assembly.
 8 | [assembly: AssemblyTitle("AkkaAndWpfExample.ThermostatSystem")]
 9 | [assembly: AssemblyDescription("")]
10 | [assembly: AssemblyConfiguration("")]
11 | [assembly: AssemblyCompany("")]
12 | [assembly: AssemblyProduct("AkkaAndWpfExample.ThermostatSystem")]
13 | [assembly: AssemblyCopyright("Copyright ©  2016")]
14 | [assembly: AssemblyTrademark("")]
15 | [assembly: AssemblyCulture("")]
16 | 
17 | // Setting ComVisible to false makes the types in this assembly not visible 
18 | // to COM components.  If you need to access a type in this assembly from 
19 | // COM, set the ComVisible attribute to true on that type.
20 | [assembly: ComVisible(false)]
21 | 
22 | // The following GUID is for the ID of the typelib if this project is exposed to COM
23 | [assembly: Guid("ba8d5cbb-ee18-42b7-b871-eb055f2f57af")]
24 | 
25 | // Version information for an assembly consists of the following four values:
26 | //
27 | //      Major Version
28 | //      Minor Version 
29 | //      Build Number
30 | //      Revision
31 | //
32 | // You can specify all the values or you can default the Build and Revision Numbers 
33 | // by using the '*' as shown below:
34 | // [assembly: AssemblyVersion("1.0.*")]
35 | [assembly: AssemblyVersion("1.0.0.0")]
36 | [assembly: AssemblyFileVersion("1.0.0.0")]
37 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/MainWindow.xaml:
--------------------------------------------------------------------------------
 1 | <Window x:Class="AkkaAndWpfExample.ThermostatUI.MainWindow"
 2 |         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3 |         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4 |         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 5 |         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 6 |         xmlns:local="clr-namespace:AkkaAndWpfExample.ThermostatUI"
 7 |         mc:Ignorable="d"
 8 |         Title="MainWindow" Height="350" Width="525"
 9 |         DataContext="{Binding Main, Source={StaticResource Locator}}">
10 |     <Grid>
11 |         <Grid.RowDefinitions>
12 |             <RowDefinition Height="100"></RowDefinition>
13 |             <RowDefinition></RowDefinition>
14 |             <RowDefinition Height="100"></RowDefinition>
15 |         </Grid.RowDefinitions>
16 |         <Grid.ColumnDefinitions>
17 |             <ColumnDefinition></ColumnDefinition>
18 |             <ColumnDefinition Width="100"></ColumnDefinition>
19 |         </Grid.ColumnDefinitions>
20 |         <Label Grid.RowSpan="3" Content="{Binding Temperature}" FontSize="80" HorizontalAlignment="Center" VerticalAlignment="Center"></Label>
21 |         <Label Grid.Row="1" Grid.Column="2" Content="{Binding TargetTemperature}" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="42.667"></Label>
22 |         <Button Content="+" Grid.Column="2" Command="{Binding IncreaseTargetTemperature}" FontSize="48"></Button>
23 |         <Button Content="-" Grid.Column="2" Grid.Row="2" Command="{Binding DecreaseTargetTemperature}" FontSize="48"></Button>
24 |     </Grid>
25 | </Window>
26 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.sln:
--------------------------------------------------------------------------------
 1 | 
 2 | Microsoft Visual Studio Solution File, Format Version 12.00
 3 | # Visual Studio 14
 4 | VisualStudioVersion = 14.0.24720.0
 5 | MinimumVisualStudioVersion = 10.0.40219.1
 6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AkkaAndWpfExample.ThermostatSystem", "AkkaAndWpfExample.ThermostatSystem\AkkaAndWpfExample.ThermostatSystem.csproj", "{BA8D5CBB-EE18-42B7-B871-EB055F2F57AF}"
 7 | EndProject
 8 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AkkaAndWpfExample.ThermostatUI", "AkkaAndWpfExample.ThermostatUI\AkkaAndWpfExample.ThermostatUI.csproj", "{A089EB45-0F65-4BED-AD47-4D067C74A31E}"
 9 | EndProject
10 | Global
11 | 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
12 | 		Debug|Any CPU = Debug|Any CPU
13 | 		Release|Any CPU = Release|Any CPU
14 | 	EndGlobalSection
15 | 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
16 | 		{BA8D5CBB-EE18-42B7-B871-EB055F2F57AF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
17 | 		{BA8D5CBB-EE18-42B7-B871-EB055F2F57AF}.Debug|Any CPU.Build.0 = Debug|Any CPU
18 | 		{BA8D5CBB-EE18-42B7-B871-EB055F2F57AF}.Release|Any CPU.ActiveCfg = Release|Any CPU
19 | 		{BA8D5CBB-EE18-42B7-B871-EB055F2F57AF}.Release|Any CPU.Build.0 = Release|Any CPU
20 | 		{A089EB45-0F65-4BED-AD47-4D067C74A31E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
21 | 		{A089EB45-0F65-4BED-AD47-4D067C74A31E}.Debug|Any CPU.Build.0 = Debug|Any CPU
22 | 		{A089EB45-0F65-4BED-AD47-4D067C74A31E}.Release|Any CPU.ActiveCfg = Release|Any CPU
23 | 		{A089EB45-0F65-4BED-AD47-4D067C74A31E}.Release|Any CPU.Build.0 = Release|Any CPU
24 | 	EndGlobalSection
25 | 	GlobalSection(SolutionProperties) = preSolution
26 | 		HideSolutionNode = FALSE
27 | 	EndGlobalSection
28 | EndGlobal
29 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/ViewModel/ViewModelLocator.cs:
--------------------------------------------------------------------------------
 1 | /*
 2 |   In App.xaml:
 3 |   <Application.Resources>
 4 |       <vm:ViewModelLocator xmlns:vm="clr-namespace:AkkaAndWpfExample.ThermostatUI"
 5 |                            x:Key="Locator" />
 6 |   </Application.Resources>
 7 |   
 8 |   In the View:
 9 |   DataContext="{Binding Source={StaticResource Locator}, Path=ViewModelName}"
10 | 
11 |   You can also use Blend to do all this with the tool's support.
12 |   See http://www.galasoft.ch/mvvm
13 | */
14 | 
15 | using GalaSoft.MvvmLight.Ioc;
16 | using Microsoft.Practices.ServiceLocation;
17 | 
18 | namespace AkkaAndWpfExample.ThermostatUI.ViewModel
19 | {
20 |     /// <summary>
21 |     /// This class contains static references to all the view models in the
22 |     /// application and provides an entry point for the bindings.
23 |     /// </summary>
24 |     public class ViewModelLocator
25 |     {
26 |         /// <summary>
27 |         /// Initializes a new instance of the ViewModelLocator class.
28 |         /// </summary>
29 |         public ViewModelLocator()
30 |         {
31 |             ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);
32 | 
33 |             ////if (ViewModelBase.IsInDesignModeStatic)
34 |             ////{
35 |             ////    // Create design time view services and models
36 |             ////    SimpleIoc.Default.Register<IDataService, DesignDataService>();
37 |             ////}
38 |             ////else
39 |             ////{
40 |             ////    // Create run time view services and models
41 |             ////    SimpleIoc.Default.Register<IDataService, DataService>();
42 |             ////}
43 | 
44 |             SimpleIoc.Default.Register<MainViewModel>();
45 |         }
46 | 
47 |         public MainViewModel Main
48 |         {
49 |             get
50 |             {
51 |                 return ServiceLocator.Current.GetInstance<MainViewModel>();
52 |             }
53 |         }
54 |         
55 |         public static void Cleanup()
56 |         {
57 |             // TODO Clear the ViewModels
58 |         }
59 |     }
60 | }


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
  1 | # Build Folders (you can keep bin if you'd like, to store dlls and pdbs)
  2 | [Bb]in/
  3 | [Oo]bj/
  4 | 
  5 | # mstest test results
  6 | TestResults
  7 | 
  8 | ## Ignore Visual Studio temporary files, build results, and
  9 | ## files generated by popular Visual Studio add-ons.
 10 | 
 11 | # User-specific files
 12 | *.suo
 13 | *.user
 14 | *.sln.docstates
 15 | 
 16 | # Build results
 17 | [Dd]ebug/
 18 | [Rr]elease/
 19 | x64/
 20 | *_i.c
 21 | *_p.c
 22 | *.ilk
 23 | *.meta
 24 | *.obj
 25 | *.pch
 26 | *.pdb
 27 | *.pgc
 28 | *.pgd
 29 | *.rsp
 30 | *.sbr
 31 | *.tlb
 32 | *.tli
 33 | *.tlh
 34 | *.tmp
 35 | *.log
 36 | *.vspscc
 37 | *.vssscc
 38 | .builds
 39 | 
 40 | # Visual C++ cache files
 41 | ipch/
 42 | *.aps
 43 | *.ncb
 44 | *.opensdf
 45 | *.sdf
 46 | 
 47 | # Visual Studio profiler
 48 | *.psess
 49 | *.vsp
 50 | *.vspx
 51 | 
 52 | # Guidance Automation Toolkit
 53 | *.gpState
 54 | 
 55 | # ReSharper is a .NET coding add-in
 56 | _ReSharper*
 57 | 
 58 | # NCrunch
 59 | *.ncrunch*
 60 | .*crunch*.local.xml
 61 | 
 62 | # Installshield output folder 
 63 | [Ee]xpress
 64 | 
 65 | # DocProject is a documentation generator add-in
 66 | DocProject/buildhelp/
 67 | DocProject/Help/*.HxT
 68 | DocProject/Help/*.HxC
 69 | DocProject/Help/*.hhc
 70 | DocProject/Help/*.hhk
 71 | DocProject/Help/*.hhp
 72 | DocProject/Help/Html2
 73 | DocProject/Help/html
 74 | 
 75 | # Click-Once directory
 76 | publish
 77 | 
 78 | # Publish Web Output
 79 | *.Publish.xml
 80 | 
 81 | # NuGet Packages Directory
 82 | packages
 83 | 
 84 | # Windows Azure Build Output
 85 | csx
 86 | *.build.csdef
 87 | 
 88 | # Windows Store app package directory
 89 | AppPackages/
 90 | 
 91 | # Others
 92 | [Bb]in
 93 | [Oo]bj
 94 | sql
 95 | TestResults
 96 | [Tt]est[Rr]esult*
 97 | *.Cache
 98 | ClientBin
 99 | [Ss]tyle[Cc]op.*
100 | ~$*
101 | *.dbmdl
102 | Generated_Code #added for RIA/Silverlight projects
103 | 
104 | # Backup & report files from converting an old project file to a newer
105 | # Visual Studio version. Backup files are not needed, because we have git ;-)
106 | _UpgradeReport_Files/
107 | Backup*/
108 | UpgradeLog*.XML
109 | FlacLibSharp.Sandbox/ProfilingSessions/
110 | FlacLibSharp/ProfilingSessions/
111 | FlacLibSharp/*.me5


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatSystem/Actors/TemperatureSensorActor.cs:
--------------------------------------------------------------------------------
 1 | using Akka.Actor;
 2 | using System;
 3 | 
 4 | namespace WpfAkkaIntegration.ThermostatSystem.Actors
 5 | {
 6 |     public class TemperatureSensorActor : ReceiveActor
 7 |     {
 8 |         public TemperatureSensorActor()
 9 |         {
10 |             Become(Idle);
11 |         }
12 | 
13 |         #region Messages 
14 | 
15 |         public class StartMeasuring { }
16 | 
17 |         public class StopMeasuring { }
18 | 
19 |         public class TakeMeasurement { }
20 | 
21 |         public class TemperatureMeasured
22 |         {
23 |             public double Temperature { get; private set; }
24 | 
25 |             public TemperatureMeasured(double temperature)
26 |             {
27 |                 Temperature = temperature;
28 |             }
29 |         }
30 | 
31 |         #endregion
32 | 
33 |         #region State
34 | 
35 |         private ICancelable _schedule;
36 | 
37 |         #endregion
38 | 
39 |         #region States
40 | 
41 |         public void Idle()
42 |         {
43 |             Receive<StartMeasuring>(message => handleStart());
44 |         }
45 | 
46 |         public void Measuring()
47 |         {
48 |             Receive<TakeMeasurement>(message => HandleTakeMeasurement());
49 |             Receive<StopMeasuring>(message => HandleStop());
50 |         }
51 | 
52 |         #endregion
53 | 
54 |         #region Handlers
55 | 
56 |         private void handleStart()
57 |         {
58 |             _schedule = Context.System.Scheduler.ScheduleTellRepeatedlyCancelable(0, 500, Self, new TakeMeasurement(), Self);
59 |             Become(Measuring);
60 |         }
61 | 
62 |         private void HandleStop()
63 |         {
64 |             _schedule.Cancel();
65 |             Become(Idle);
66 |         }
67 | 
68 |         private double _temperature = 0.01;
69 |         private void HandleTakeMeasurement()
70 |         {
71 |             // TODO: Implement measurement
72 |             _temperature += 0.01;
73 |             var message = new TemperatureMeasured(Math.Round(_temperature,2));
74 |             Context.Parent.Tell(message);
75 |         }
76 | 
77 |         #endregion
78 |     }
79 | }
80 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/Properties/AssemblyInfo.cs:
--------------------------------------------------------------------------------
 1 | using System.Reflection;
 2 | using System.Resources;
 3 | using System.Runtime.CompilerServices;
 4 | using System.Runtime.InteropServices;
 5 | using System.Windows;
 6 | 
 7 | // General Information about an assembly is controlled through the following 
 8 | // set of attributes. Change these attribute values to modify the information
 9 | // associated with an assembly.
10 | [assembly: AssemblyTitle("AkkaAndWpfExample.ThermostatUI")]
11 | [assembly: AssemblyDescription("")]
12 | [assembly: AssemblyConfiguration("")]
13 | [assembly: AssemblyCompany("")]
14 | [assembly: AssemblyProduct("AkkaAndWpfExample.ThermostatUI")]
15 | [assembly: AssemblyCopyright("Copyright ©  2016")]
16 | [assembly: AssemblyTrademark("")]
17 | [assembly: AssemblyCulture("")]
18 | 
19 | // Setting ComVisible to false makes the types in this assembly not visible 
20 | // to COM components.  If you need to access a type in this assembly from 
21 | // COM, set the ComVisible attribute to true on that type.
22 | [assembly: ComVisible(false)]
23 | 
24 | //In order to begin building localizable applications, set 
25 | //<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
26 | //inside a <PropertyGroup>.  For example, if you are using US english
27 | //in your source files, set the <UICulture> to en-US.  Then uncomment
28 | //the NeutralResourceLanguage attribute below.  Update the "en-US" in
29 | //the line below to match the UICulture setting in the project file.
30 | 
31 | //[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
32 | 
33 | 
34 | [assembly: ThemeInfo(
35 |     ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
36 |                                      //(used if a resource is not found in the page, 
37 |                                      // or application resource dictionaries)
38 |     ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
39 |                                               //(used if a resource is not found in the page, 
40 |                                               // app, or any theme specific resource dictionaries)
41 | )]
42 | 
43 | 
44 | // Version information for an assembly consists of the following four values:
45 | //
46 | //      Major Version
47 | //      Minor Version 
48 | //      Build Number
49 | //      Revision
50 | //
51 | // You can specify all the values or you can default the Build and Revision Numbers 
52 | // by using the '*' as shown below:
53 | // [assembly: AssemblyVersion("1.0.*")]
54 | [assembly: AssemblyVersion("1.0.0.0")]
55 | [assembly: AssemblyFileVersion("1.0.0.0")]
56 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatSystem/Actors/ThermostatActor.cs:
--------------------------------------------------------------------------------
 1 | using Akka.Actor;
 2 | 
 3 | namespace WpfAkkaIntegration.ThermostatSystem.Actors
 4 | {
 5 |     public class ThermostatActor : PubSubActor
 6 |     {
 7 |         public ThermostatActor()
 8 |         {
 9 |             Become(Active);
10 |         }
11 | 
12 |         #region Messages
13 | 
14 |         public class IncreaseTargetTemperature
15 |         {
16 |             public int Step { get; private set; }
17 |             public IncreaseTargetTemperature(int step) { Step = step; }
18 |         }
19 | 
20 |         public class DecreaseTargetTemperature
21 |         {
22 |             public double Step { get; private set; }
23 |             public DecreaseTargetTemperature(double step) { Step = step; }
24 |         }
25 | 
26 |         public class TargetTemperatureSet
27 |         {
28 |             public double TargetTemperature { get; private set; }
29 |             public TargetTemperatureSet(double targetTemperature) { TargetTemperature = targetTemperature; }
30 |         }
31 | 
32 |         #endregion
33 | 
34 |         #region State
35 | 
36 |         private double _targetTemperature;
37 |         private IActorRef _temperatureSensor;
38 | 
39 |         #endregion
40 | 
41 |         #region States
42 | 
43 |         public void Active()
44 |         {
45 |             if (_temperatureSensor == null)
46 |             {
47 |                 _temperatureSensor = CreateSensor();
48 |                 _temperatureSensor.Tell(new TemperatureSensorActor.StartMeasuring());
49 |             }
50 | 
51 |             Receive<IncreaseTargetTemperature>(message => HandleTargetChange(message.Step));
52 |             Receive<DecreaseTargetTemperature>(message => HandleTargetChange(message.Step * -1));
53 |             Receive<TemperatureSensorActor.TemperatureMeasured>(message => HandleMeasurement(message));
54 | 
55 |             AcceptSubscribers();
56 |         }
57 | 
58 |         private IActorRef CreateSensor()
59 |         {
60 |             var props = Props.Create<TemperatureSensorActor>();
61 |             return Context.ActorOf<TemperatureSensorActor>();
62 |         }
63 | 
64 |         #endregion
65 | 
66 |         #region Handlers
67 | 
68 |         private void HandleTargetChange(double step)
69 |         {
70 |             _targetTemperature += step;
71 |             var message = new TargetTemperatureSet(_targetTemperature);
72 |             Publish(message);
73 |         }
74 | 
75 |         private void HandleMeasurement(TemperatureSensorActor.TemperatureMeasured message)
76 |         {
77 |             Publish(message);
78 |         }
79 | 
80 |         #endregion
81 | 
82 |     }
83 | }
84 | 


--------------------------------------------------------------------------------
/AkkaAndWpfExample.ThermostatUI/Properties/Resources.Designer.cs:
--------------------------------------------------------------------------------
 1 | //------------------------------------------------------------------------------
 2 | // <auto-generated>
 3 | //     This code was generated by a tool.
 4 | //     Runtime Version:4.0.30319.42000
 5 | //
 6 | //     Changes to this file may cause incorrect behavior and will be lost if
 7 | //     the code is regenerated.
 8 | // </auto-generated>
 9 | //------------------------------------------------------------------------------
10 | 
11 | namespace AkkaAndWpfExample.ThermostatUI.Properties
12 | {
13 | 
14 | 
15 |     /// <summary>
16 |     ///   A strongly-typed resource class, for looking up localized strings, etc.
17 |     /// </summary>
18 |     // This class was auto-generated by the StronglyTypedResourceBuilder
19 |     // class via a tool like ResGen or Visual Studio.
20 |     // To add or remove a member, edit your .ResX file then rerun ResGen
21 |     // with the /str option, or rebuild your VS project.
22 |     [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
23 |     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
24 |     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
25 |     internal class Resources
26 |     {
27 | 
28 |         private static global::System.Resources.ResourceManager resourceMan;
29 | 
30 |         private static global::System.Globalization.CultureInfo resourceCulture;
31 | 
32 |         [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
33 |         internal Resources()
34 |         {
35 |         }
36 | 
37 |         /// <summary>
38 |         ///   Returns the cached ResourceManager instance used by this class.
39 |         /// </summary>
40 |         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
41 |         internal static global::System.Resources.ResourceManager ResourceManager
42 |         {
43 |             get
44 |             {
45 |                 if ((resourceMan == null))
46 |                 {
47 |                     global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("AkkaAndWpfExample.ThermostatUI.Properties.Resources", typeof(Resources).Assembly);
48 |                     resourceMan = temp;
49 |                 }
50 |                 return resourceMan;
51 |             }
52 |         }
53 | 
54 |         /// <summary>
55 |         ///   Overrides the current thread's CurrentUICulture property for all
56 |         ///   resource lookups using this strongly typed resource class.
57 |         /// </summary>
58 |         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
59 |         internal static global::System.Globalization.CultureInfo Culture
60 |         {
61 |             get
62 |             {
63 |                 return resourceCulture;
64 |             }
65 |             set
66 |             {
67 |                 resourceCulture = value;
68 |             }
69 |         }
70 |     }
71 | }
72 | 


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/AkkaAndWpfExample.ThermostatSystem/AkkaAndWpfExample.ThermostatSystem.csproj:
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53 |     <Compile Include="Actors\ThermostatActor.cs" />
54 |     <Compile Include="Properties\AssemblyInfo.cs" />
55 |     <Compile Include="ThermostatSystem.cs" />
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57 |   <ItemGroup>
58 |     <None Include="packages.config" />
59 |   </ItemGroup>
60 |   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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62 |        Other similar extension points exist, see Microsoft.Common.targets.
63 |   <Target Name="BeforeBuild">
64 |   </Target>
65 |   <Target Name="AfterBuild">
66 |   </Target>
67 |   -->
68 | </Project>


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/README.md:
--------------------------------------------------------------------------------
  1 | # AkkaAndWpfExample
  2 | 
  3 | Code backing up a blogpost on integrating Akka.NET and WPF. This branch is the starting point, the solution I came up with is in the "bridged" branch.
  4 | 
  5 | The post: https://blog.aaronlenoir.com/2016/04/20/integrating-wpf-and-akka-net-2
  6 | 
  7 | Full text:
  8 | 
  9 | I'm wondering how to combine an Akka.NET actor system with a WPF front-end.
 10 | 
 11 | The [Actor Model](http://doc.akka.io/docs/akka/snapshot/general/actors.html) provides a nice way to build concurrent systems. There are several implementations for .NET. [Orleans](https://github.com/dotnet/orleans) and [Akka.Net](http://getakka.net/) are the best known.
 12 | 
 13 | As an excercise, let's build a "thermostat" system.
 14 | 
 15 | I'll leave out some implementation details so we can focus on the integration.
 16 | 
 17 | ## The Thermostat System
 18 | 
 19 | The system will display both the current and the desired temperature to the user.
 20 | 
 21 | It'll have two buttons to increase and decrease the desired temperature.
 22 | 
 23 | In the background, the system should control the heating but we'll ignore that bit here.
 24 | 
 25 | ### UI
 26 | 
 27 | We'll create a basic WPF application with MVVM. The ViewModel will have a property for the current temperature and the target temperature.
 28 | 
 29 | It also accepts two commands: ```IncreaseTargetTemperature``` and ```DecreaseTargetTemperature```.
 30 | 
 31 | ### Back-end
 32 | 
 33 | The back-end should have a thermometer that takes measurements on a regular basis.
 34 | 
 35 | It should also keep track of the target temperature, set by the user.
 36 | 
 37 | The target temperature can change by two messages sent to the system:
 38 | 
 39 | * Increase the target temperature
 40 | * Reduce the target temperature
 41 | 
 42 | As output, the system should emit:
 43 | 
 44 | * The current temperature, when a measurement takes place
 45 | * The target temperature, when it's changed
 46 | 
 47 | ## Thermostat Actor System
 48 | 
 49 | ### Actors
 50 | 
 51 | This simple actor system can consist of two Actors:
 52 | 
 53 | * TemperatureSensorActor
 54 | * ThermostatActor
 55 | 
 56 | ### TemperatureSensor
 57 | 
 58 | The TemperatureSensor sends a message ```TemperatureMeasured``` to its Parent actor. This happens as a response to a ```TakeMeasurement``` message.
 59 | 
 60 | The TemperatureSensor sends the ```TakeMeasurement``` to itself on a fixed interval.
 61 | 
 62 | ### Thermostat
 63 | 
 64 | The Thermostat is in charge of creating a TemperatureSensor.
 65 | 
 66 | It's a ["pub-sub"](https://github.com/petabridge/akka-bootcamp/blob/0ac15bdc4dbe54f9169e8e6e026bf0ec28e8f2a2/src/Unit-2/lesson3/README.md#how-do-i-do-pubsub-with-akkanet-actors) actor that should send to its subscribers the following messages:
 67 | 
 68 | * ```TargetTemperatureSet```
 69 | * ```TemperatureMeasured```
 70 | 
 71 | ## Bridge
 72 | 
 73 | With the UI and the actor system ready, we can start to make them talk with each other.
 74 | 
 75 | > The code we start with is on [github](https://github.com/AaronLenoir/AkkaAndWpfExample/tree/master). If you want to try this yourself first, you could fork it. If not, just read on to see how I do it.
 76 | 
 77 | To support this, WPF should react to messages sent by the Actors. At the same time, WPF should be able to send messages to the Actor System, in some way.
 78 | 
 79 | To support this communication we could create a "Bridge". The Bridge will contain:
 80 | 
 81 | * A Bridge Actor
 82 | * One or more public functions
 83 | 
 84 | The Bridge Actor will have a reference to the ViewModel. The ViewModel will have a reference to the Bridge (not the Bridge Actor!).
 85 | 
 86 | The Bridge can expose methods the ViewModel can call which pass messages to the Actor System. For example, a method ```IncreaseTargetTemperature```.
 87 | 
 88 | The Bridge Actor calls functions exposed by the ViewModel. These will update the ViewModel's properties. The actor does this only while handling messages.
 89 | 
 90 | ### Bridge Interfaces
 91 | 
 92 | To avoid exposing the entire ViewModel to the Bridge Actor, an interface seems like a good idea. And an interface to abstract away the Bridge passed to the ViewModel would also help.
 93 | 
 94 | In short, we'll have two Interfaces. One implemented by the ViewModel, the other by the Bridge itself.
 95 | 
 96 | We can define these two interfaces:
 97 | 
 98 | * ```IThermostatView```
 99 |    * ```UpdateCurrentTemperature```
100 |    * ```UpdateTargetTemperature```
101 | * ```IThermostatBridge```
102 |  * ```IncreaseTargetTemperature```
103 |  * ```DecreaseTargetTemperature```
104 | 
105 | The Bridge Actor references ```IThermostatView``` while the ViewModel implements it.
106 | 
107 | The ViewModel references ```IThermostatBridge``` while the Bridge implements it.
108 | 
109 | ## Implementation
110 | 
111 | ### Views
112 | 
113 | The views, as discussed above, are simple:
114 | 
115 | ```
116 | // Implemented by the Bridge
117 | public interface IThermostatBridge
118 | {
119 |     void IncreaseTargetTemperature();
120 |     void DecreaseTargetTemperature();
121 | }
122 | ```
123 | 
124 | ```
125 | // Implemented by the ViewModel (in the WPF project)
126 | public interface IThermostatView
127 | {
128 |     void UpdateCurrentTemperature(double currentTemperature);
129 |     void UpdateTargetTemperature(double targetTemperature);
130 | }
131 | ```
132 | 
133 | ### Bridge Actor
134 | 
135 | The Bridge Actor is small, just passing messages around. It does have two dependencies.
136 | 
137 | ```
138 | public class BridgeActor : ReceiveActor
139 | {
140 |     private IThermostatView _thermostatView;
141 |     private IActorRef _thermostatActor;
142 | 
143 |     public BridgeActor(IThermostatView thermostatView, IActorRef thermostatActor)
144 |     {
145 |         _thermostatView = thermostatView;
146 |         _thermostatActor = thermostatActor;
147 |         Become(Active);
148 |     }
149 | 
150 |     public void Active()
151 |     {
152 |         Receive<TemperatureMeasured>(message => _thermostatView.UpdateCurrentTemperature(message.Temperature));
153 |         Receive<TargetTemperatureSet>(message => _thermostatView.UpdateTargetTemperature(message.TargetTemperature));
154 |         Receive<IncreaseTargetTemperature>(message => _thermostatActor.Tell(message));
155 |         Receive<DecreaseTargetTemperature>(message => _thermostatActor.Tell(message));
156 |     }
157 | }
158 | ```
159 | 
160 | ### Bridge
161 | 
162 | The bridge will implement the ```IThermostatBridge``` interface:
163 | 
164 | ```
165 | public class ThermostatBridge : IThermostatBridge
166 | {
167 |     private IActorRef _bridgeActor;
168 | 
169 |     private readonly IncreaseTargetTemperature increaseMessage = new IncreaseTargetTemperature(1);
170 |     private readonly DecreaseTargetTemperature decreaseMessage = new DecreaseTargetTemperature(1);
171 | 
172 |     public ThermostatBridge(IActorRef bridgeActor)
173 |     {
174 |         _bridgeActor = bridgeActor;
175 |     }
176 | 
177 |     public void IncreaseTargetTemperature()
178 |     {
179 |         _bridgeActor.Tell(increaseMessage);
180 |     }
181 | 
182 |     public void DecreaseTargetTemperature()
183 |     {
184 |         _bridgeActor.Tell(decreaseMessage);
185 |     }
186 | }
187 | ```
188 | ### System Creation
189 | 
190 | I already had a seperate class to create the Actor System. For the excercise, I'll create the system when the WPF app starts. But this might not be the ideal place.
191 | 
192 | ```
193 | public partial class App : Application
194 | {
195 |     private static WpfAkkaIntegration.ThermostatSystem.ThermostatSystem _system = new WpfAkkaIntegration.ThermostatSystem.ThermostatSystem();
196 | 
197 |     public static WpfAkkaIntegration.ThermostatSystem.ThermostatSystem ThermostatSystem => _system;
198 | }
199 | ```
200 | 
201 | In that class, there's a function ```CreateThermostatBridge``` which can create our Bridge. Here's the full ThermostatSystem class:
202 | 
203 | ```
204 | public class ThermostatSystem
205 | {
206 |     private ActorSystem _system;
207 |     private IActorRef _thermostatActor;
208 | 
209 |     public ThermostatSystem()
210 |     {
211 |         _system = ActorSystem.Create(nameof(ThermostatSystem));
212 |         _thermostatActor = CreateThermostatActor();
213 |     }
214 | 
215 |     private IActorRef CreateThermostatActor()
216 |     {
217 |         var props = Props.Create<Actors.ThermostatActor>();
218 |         return _system.ActorOf(props, "thermostat");
219 |     }
220 | 
221 |     public IThermostatBridge CreateThermostatBridge(IThermostatView thermostatView)
222 |     {
223 |         var bridgeActor = CreateBridgeActor(thermostatView);
224 |         _thermostatActor.Tell(new Subscribe(bridgeActor));
225 | 
226 |         return new ThermostatBridge(bridgeActor);
227 |     }
228 | 
229 |     private IActorRef CreateBridgeActor(IThermostatView thermostatView)
230 |     {
231 |         var props = Props.Create(() => new BridgeActor(thermostatView, _thermostatActor))
232 |             .WithDispatcher("akka.actor.synchronized-dispatcher");
233 |         return _system.ActorOf(props, "bridge");
234 |     }
235 | }
236 | ```
237 | 
238 | #### Synchronized Dispatcher
239 | 
240 | The code above creates the BridgeActor using the [synchronized dispatcher](http://getakka.net/docs/working-with-actors/Dispatchers#synchronizeddispatcher).
241 | 
242 | This makes that actor run on the UI-thread, so calling methods on the ViewModel should be safe.
243 | 
244 | From the [akka.net docs](http://getakka.net/docs/working-with-actors/Dispatchers#synchronizeddispatcher):
245 | 
246 | > You may use this dispatcher to create actors that update UIs in a reactive manner. An application that displays real-time updates of stock prices may have a dedicated actor to update the UI controls directly for example.
247 | 
248 | > **Note:** As a general rule, actors running in this dispatcher shouldn't do much work. Avoid doing any extra work that may be done by actors running in other pools.
249 | 
250 | ### Bridge Creation
251 | 
252 | Finally we have everything to hook it all up in the ViewModel.
253 | 
254 | ```
255 | public MainViewModel()
256 | {
257 |     _bridge = App.ThermostatSystem.CreateThermostatBridge(this);
258 | 
259 |     IncreaseTargetTemperature = new RelayCommand(() => _bridge.IncreaseTargetTemperature());
260 |     DecreaseTargetTemperature = new RelayCommand(() => _bridge.DecreaseTargetTemperature());
261 | }
262 | ```
263 | 
264 | You can also see the implementation of the two commands the view can receive.
265 | 
266 | I do this in the constructor of the ViewModel for this excercise. In real life, I suppose dependency injection would be adviceable. But then the ViewModel would still need to assign itself to the Bridge afterwards.
267 | 
268 | ## Result
269 | 
270 | Running the app gives me this WPF app that updates its view based on messages that occur in the Actor System.
271 | 
272 | Additionally, the view triggers changes to the system by sending it messages. It does this when it receives a command.
273 | 
274 | When you click a button in WPF, all it does is ask the bridge to increase the target temperature. The Actor System will then process that message. When it's done, the Actor System forwards a new message back to WPF so it can update the view.
275 | 
276 | This is all asynchronous, because of the actor system.
277 | 
278 | In the example, the current temperature only goes up. This is because I did not simulate an actual room that heats. I decided to just let the temperature increase at every measurement taken. Just to show the temperature is changing.
279 | 
280 | ### Code
281 | 
282 | The example project is on github:
283 | 
284 | * [Finished](https://github.com/AaronLenoir/AkkaAndWpfExample/tree/bridged)
285 | * [Before creating the bridge](https://github.com/AaronLenoir/AkkaAndWpfExample/tree/master)
286 | 
287 | ## Conclusion
288 | 
289 | It's possible to loosely couple a WPF app with an Akka.NET Actor System. I used something I called a Bridge, [but there must be a better name](https://web.archive.org/web/20160420223239/http://martinfowler.com/bliki/TwoHardThings.html).
290 | 
291 | Something I don't like here is that the Bridge and Bridge Actor should be more generic. It mentions "Thermostat" everywhere.
292 | 
293 | Do you think this is a reasonable way to put a WPF front-end on an Akka.NET Actor System? Let me know in the comments, or on [twitter](https://www.twitter.com/lenoir_aaron) or something.
294 | 


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