Initial commit

.gitignore

@@ -0,0 +1,398 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
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+# GhostDoc plugin setting file
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+FodyWeavers.xsd
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+.vscode/*
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+*.code-workspace
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+.history/
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+# Windows Installer files from build outputs
+*.cab
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+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+*.sln.iml

Lab1/ChatRoom/ChatRoom.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="NLog" Version="5.3.4" />
+    <PackageReference Include="SimpleRpc" Version="1.0.0-beta1" />
+    <PackageReference Include="SimpleRpc.Serialization.Hyperion" Version="1.0.0-beta1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ChatRoomContract\ChatRoomContract.csproj" />
+  </ItemGroup>
+
+</Project>

Lab1/ChatRoom/ChatRoomLogic.cs

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+namespace ChatRoom;
+
+public class ChatRoomLogic
+{
+    /// <summary>
+    /// Background task thread.
+    /// </summary>
+    private Thread thread;
+
+    /// <summary>
+	/// State descriptor.
+	/// </summary>
+	private ChatRoomState state = new ChatRoomState();
+
+	public ChatRoomLogic()
+	{
+        thread = new Thread(BackgroundTask);
+        thread.Start();
+    }
+
+    public void BackgroundTask()
+    {
+        while (true)
+        {
+
+        }
+    }
+}

Lab1/ChatRoom/ChatRoomService.cs

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+namespace ChatRoom;
+
+using ChatRoomContract;
+
+public class ChatRoomService : IChatRoomService
+{
+    //NOTE: instance-per-request service would need logic to be static or injected from a singleton instance
+    private readonly ChatRoomLogic logic = new ChatRoomLogic();
+
+    public void ApproveMessage(int messageId)
+    {
+        throw new NotImplementedException();
+    }
+
+    public int GetClientId()
+    {
+        throw new NotImplementedException();
+    }
+
+    public Message? GetNewMessage()
+    {
+        throw new NotImplementedException();
+    }
+
+    public int GetStrikes()
+    {
+        throw new NotImplementedException();
+    }
+
+    public void RejectMessage(int messageId)
+    {
+        throw new NotImplementedException();
+    }
+
+    public bool SendMessage(string contents)
+    {
+        throw new NotImplementedException();
+    }
+
+    public void SetClientName(string name)
+    {
+        throw new NotImplementedException();
+    }
+}

Lab1/ChatRoom/ChatRoomState.cs

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+namespace ChatRoom;
+
+public class ChatRoomState
+{
+    /// <summary>
+	/// Access lock.
+	/// </summary>
+    public readonly object AccessLock = new object();
+
+    /// <summary>
+	/// Last unique ID value generated.
+	/// </summary>
+	public int LastUniqueId;
+}

Lab1/ChatRoom/Properties/launchSettings.json

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+{
+  "profiles": {
+    "ChatRoom": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "https://localhost:54058;http://localhost:54059"
+    }
+  }
+}

Lab1/ChatRoom/Server.cs

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+using System.Net;
+
+using NLog;
+
+using SimpleRpc.Transports;
+using SimpleRpc.Transports.Http.Server;
+using SimpleRpc.Serialization.Hyperion;
+using ChatRoomContract;
+
+namespace ChatRoom;
+
+public class Server
+{
+    /// <summary>
+    /// Logger for this class.
+    /// </summary>
+    Logger log = LogManager.GetCurrentClassLogger();
+
+    /// <summary>
+    /// Configure loggin subsystem.
+    /// </summary>
+    private void ConfigureLogging()
+    {
+        var config = new NLog.Config.LoggingConfiguration();
+
+        var console =
+            new NLog.Targets.ConsoleTarget("console")
+            {
+                Layout = @"${date:format=HH\:mm\:ss}|${level}| ${message} ${exception}"
+            };
+        config.AddTarget(console);
+        config.AddRuleForAllLevels(console);
+
+        LogManager.Configuration = config;
+    }
+
+    /// <summary>
+    /// Program entry point.
+    /// </summary>
+    /// <param name="args">Command line arguments.</param>
+    public static void Main(string[] args)
+    {
+        var self = new Server();
+        self.Run(args);
+    }
+
+    /// <summary>
+    /// Program body.
+    /// </summary>
+    /// <param name="args">Command line arguments.</param>
+    private void Run(string[] args)
+    {
+        //configure logging
+        ConfigureLogging();
+
+        //indicate server is about to start
+        log.Info("Server is about to start");
+
+        //start the server
+        StartServer(args);
+    }
+
+    /// <summary>
+    /// Starts integrated server.
+    /// </summary>
+    /// <param name="args">Command line arguments.</param>
+    private void StartServer(string[] args)
+    {
+        ///create web app builder
+        var builder = WebApplication.CreateBuilder(args);
+
+        //configure integrated server
+        builder.WebHost.ConfigureKestrel(opts => {
+            opts.Listen(IPAddress.Loopback, 5000);
+        });
+
+        //add SimpleRPC services
+        builder.Services
+            .AddSimpleRpcServer(new HttpServerTransportOptions { Path = "/simplerpc" })
+            .AddSimpleRpcHyperionSerializer();
+
+        //add our custom services
+        builder.Services
+            // .AddScoped<IChatRoomService, ChatRoomService>();  //instance-per-request, AddTransient would result in the same
+            .AddSingleton<IChatRoomService>(new ChatRoomService());   //singleton
+
+        //build the server
+        var app = builder.Build();
+
+        //add SimpleRPC middleware
+        app.UseSimpleRpcServer();
+
+        //run the server
+        app.Run();
+        // app.RunAsync(); //use this if you need to implement background processing in the main thread
+    }
+}

Lab1/ChatRoom/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information",
+      "Microsoft.AspNetCore.Hosting.Diagnostics": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

Lab1/ChatRoomContract/ChatRoomContract.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Lab1/ChatRoomContract/IChatRoomService.cs

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+namespace ChatRoomContract;
+
+public class Message
+{
+    int id;
+    public string contents;
+    public bool needsToBeCensored;
+}
+
+public interface IChatRoomService
+{
+    int GetClientId();
+
+    void SetClientName(string name);
+
+    int GetStrikes();
+
+    bool SendMessage(string contents);
+
+    Message? GetNewMessage();
+
+    void RejectMessage(int messageId);
+
+    void ApproveMessage(int messageId);
+}

Lab1/Lab1.sln

@@ -0,0 +1,37 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35208.52
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChatRoom", "ChatRoom\ChatRoom.csproj", "{BA24D5FC-9D95-4E0B-8A0C-47CDAD181ADF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChatRoomContract", "ChatRoomContract\ChatRoomContract.csproj", "{22CBCBA6-8B72-474F-95F5-D07F1A59114F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Moderator", "Moderator\Moderator.csproj", "{5FD486F7-E980-4479-96B0-DCE2167A313D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BA24D5FC-9D95-4E0B-8A0C-47CDAD181ADF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BA24D5FC-9D95-4E0B-8A0C-47CDAD181ADF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BA24D5FC-9D95-4E0B-8A0C-47CDAD181ADF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BA24D5FC-9D95-4E0B-8A0C-47CDAD181ADF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{22CBCBA6-8B72-474F-95F5-D07F1A59114F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{22CBCBA6-8B72-474F-95F5-D07F1A59114F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{22CBCBA6-8B72-474F-95F5-D07F1A59114F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{22CBCBA6-8B72-474F-95F5-D07F1A59114F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5FD486F7-E980-4479-96B0-DCE2167A313D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5FD486F7-E980-4479-96B0-DCE2167A313D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5FD486F7-E980-4479-96B0-DCE2167A313D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5FD486F7-E980-4479-96B0-DCE2167A313D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {BB44ED15-4F47-40EA-8EB2-C795F3C5E5DA}
+	EndGlobalSection
+EndGlobal

Lab1/Moderator/Moderator.cs

@@ -0,0 +1,116 @@
+using ChatRoomContract;
+using Microsoft.Extensions.DependencyInjection;
+using NLog;
+using SimpleRpc.Transports.Http.Client;
+using SimpleRpc.Serialization.Hyperion;
+using SimpleRpc.Transports;
+using System.Diagnostics;
+using System.Security.Cryptography;
+
+namespace Moderator;
+
+internal class Moderator
+{
+    private readonly List<string> FIRSTNAMES =
+        new List<string> {
+            "John", "Peter", "Jack", "Steve"
+        };
+
+    /// <summary>
+    /// A set of surnames to choose from.
+    /// </summary>
+    private readonly List<string> LASTNAMES =
+        new List<String> {
+            "Johnson", "Peterson", "Jackson", "Steveson"
+        };
+
+
+    /// <summary>
+	/// Logger for this class.
+	/// </summary>
+    Logger mLog = LogManager.GetCurrentClassLogger();
+
+    /// <summary>
+	/// Configures logging subsystem.
+	/// </summary>
+	private void ConfigureLogging()
+    {
+        var config = new NLog.Config.LoggingConfiguration();
+
+        var console =
+            new NLog.Targets.ConsoleTarget("console")
+            {
+                Layout = @"${date:format=HH\:mm\:ss}|${level}| ${message} ${exception}"
+            };
+        config.AddTarget(console);
+        config.AddRuleForAllLevels(console);
+
+        LogManager.Configuration = config;
+    }
+
+    private void RunConnection(IChatRoomService chatRoom)
+    {
+        var rnd = new Random();
+
+        var name = FIRSTNAMES[rnd.Next(FIRSTNAMES.Count)] + " " + LASTNAMES[rnd.Next(LASTNAMES.Count)];
+        Console.Title = $"Moderator | ${name}";
+
+        chatRoom.SetClientName(name);
+
+        while (true)
+        {
+
+        }
+    }
+
+    private void Run()
+    {
+        //configure logging
+        ConfigureLogging();
+
+        //initialize random number generator
+        var rnd = new Random();
+
+        while (true)
+        {
+            //connect to the server, get service client proxy
+            var sc = new ServiceCollection();
+            sc
+                .AddSimpleRpcClient(
+                    "chatRoomService", //must be same as on line 86
+                    new HttpClientTransportOptions
+                    {
+                        Url = "http://127.0.0.1:5000/simplerpc",
+                        Serializer = "HyperionMessageSerializer"
+                    }
+                )
+                .AddSimpleRpcHyperionSerializer();
+
+            sc.AddSimpleRpcProxy<IChatRoomService>("chatRoomService"); //must be same as on line 77
+
+            var sp = sc.BuildServiceProvider();
+
+            var chatRoom = sp.GetService<IChatRoomService>();
+            Debug.Assert(chatRoom != null);
+
+            try
+            {
+                RunConnection(chatRoom);
+            }
+            catch (Exception e)
+            {
+                //log whatever exception to console
+                mLog.Warn(e, "Unhandled exception caught. Will restart main loop.");
+
+                //prevent console spamming
+                Thread.Sleep(2000);
+            }
+        }
+    }
+
+    static void Main(string[] args)
+    {
+        var self = new Moderator();
+        self.Run();
+    }
+}

Lab1/Moderator/Moderator.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+    <PackageReference Include="NLog" Version="5.3.4" />
+    <PackageReference Include="SimpleRpc" Version="1.0.0-beta1" />
+    <PackageReference Include="SimpleRpc.Serialization.Hyperion" Version="1.0.0-beta1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ChatRoomContract\ChatRoomContract.csproj" />
+  </ItemGroup>
+
+</Project>

README.md

@@ -0,0 +1,7 @@
+# Lab1
+
+Tema: Pokalbių kambarys
+
+Komponentai: Kambarys (serveris), dalyvis, moderatorius.
+
+Aprašymas: Neblokuoti dalyviai periodiškai atsitiktiniu būdu generuoja ar siunčiama žinutė yra cenzūrinė ar necenzūrinė ir siunčia žinutę serveriui. Serveris žinutes deda į eilę. Moderatoriai periodiškai tikrina naujas eilės žinutes ir, suradę necenzūrinę žinutę, žinutę ištrina, o siuntusiam dalyviui skiria pražangą. Patikrinta žinutė tampa nenauja ir pakartotinai netikrinama. Kiekvieną kartą, kai kalyvis gauna pražangą, jis turi šansą būti blokuojamas. Šansas tuo didesnis kuo daugiau dalyvis turi pražangų. Užblokuotas dalyvis netenka visų pražangų ir nieko nedaro tiek periodų kiek pražangų turėjo. Dalyviui negalima skirti pražangų, kai jis užblokuotas. Nepriklausomai nuo dalyvių ir moderatorių veiklos, serveris periodiškai trina seniausias jau moderuotas eilės žinutes, kad išvengti perpildymo.