2024-10-07 23:01:48 +04:00
31 changed files with 1304 additions and 0 deletions
--- a/kuzarin_maxim_lab_4/.dockerignore
+++ b/kuzarin_maxim_lab_4/.dockerignore
@ -0,0 +1,30 @@
+**/.classpath
+**/.dockerignore
+**/.env
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+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**
--- a/kuzarin_maxim_lab_4/.gitignore
+++ b/kuzarin_maxim_lab_4/.gitignore
@ -0,0 +1,484 @@
+## Ignore Visual Studio temporary files, build results, and
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+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
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+# RIA/Silverlight projects
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+# because we have git ;-)
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+# Cake - Uncomment if you are using it
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+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
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+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
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+# Windows Installer files from build outputs
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+# JetBrains Rider
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+# globs
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+# Mac bundle stuff
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+# content below from: https://github.com/github/gitignore/blob/master/Global/macOS.gitignore
+# General
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+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
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+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
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+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
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+# content below from: https://github.com/github/gitignore/blob/master/Global/Windows.gitignore
+# Windows thumbnail cache files
+Thumbs.db
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+
+# Dump file
+*.stackdump
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+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# Vim temporary swap files
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--- a/kuzarin_maxim_lab_4/Consumer1/Consumer1.csproj
+++ b/kuzarin_maxim_lab_4/Consumer1/Consumer1.csproj
@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\PublishSubscribe\PublishSubscribe.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_4/Consumer1/Dockerfile
+++ b/kuzarin_maxim_lab_4/Consumer1/Dockerfile
@ -0,0 +1,23 @@
+#See https://aka.ms/customizecontainer to learn how to customize your debug container and how Visual Studio uses this Dockerfile to build your images for faster debugging.
+
+FROM mcr.microsoft.com/dotnet/runtime:8.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["Consumer1/Consumer1.csproj", "Consumer1/"]
+COPY ["PublishSubscribe/PublishSubscribe.csproj", "PublishSubscribe/"]
+RUN dotnet restore "./Consumer1/Consumer1.csproj"
+COPY . .
+WORKDIR "/src/Consumer1"
+RUN dotnet build "./Consumer1.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./Consumer1.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "Consumer1.dll"]
--- a/kuzarin_maxim_lab_4/Consumer1/Program.cs
+++ b/kuzarin_maxim_lab_4/Consumer1/Program.cs
@ -0,0 +1,36 @@
+
+using PublishSubscribe;
+
+var rabbitHost = Environment.GetEnvironmentVariable("RABBIT_HOST") ?? "localhost";
+var rabbitUsername = Environment.GetEnvironmentVariable("RABBIT_USERNAME") ?? "user";
+var rabbitPassword = Environment.GetEnvironmentVariable("RABBIT_PASSWORD") ?? "password";
+var rabbitExchange = Environment.GetEnvironmentVariable("RABBIT_EXCHANGE") ?? "SorterIn";
+var rabbitQueue = Environment.GetEnvironmentVariable("RABBIT_QUEUE") ?? "SorterFirst";
+var HasDelay = bool.Parse(Environment.GetEnvironmentVariable("HAS_DELAY") ?? "false");
+
+Thread.Sleep(2000);
+
+var Receiver = new ExchangeReceiver(rabbitHost, rabbitUsername, rabbitPassword);
+
+Receiver.SubscribeTo(rabbitExchange, (message) =>
+{
+    var rnd = new Random();
+
+    var messageData = message.Split("|");
+
+    Console.WriteLine($"[<-]\tПришло сообщение\tId:{messageData[0]}\tType:{messageData[2]}\t Data:{string.Join(";", messageData.Skip(3))}");
+
+    if (HasDelay)
+    {
+        Thread.Sleep(rnd.Next(2000, 3000));
+        Console.WriteLine($"[\\/]\tОбработка сообщения {messageData[0]} завершена");
+    }
+    else
+    {
+        Console.WriteLine($"[\\/]\tСообщение {messageData[0]} обрабатывается мгновенно");
+    }
+
+},
+rabbitQueue);
+
+while (true) ;
--- a/kuzarin_maxim_lab_4/Consumer1/Properties/launchSettings.json
+++ b/kuzarin_maxim_lab_4/Consumer1/Properties/launchSettings.json
@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "Consumer1": {
+      "commandName": "Project"
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker"
+    }
+  }
+}
--- a/kuzarin_maxim_lab_4/HelloWorld/HelloWorld.csproj
+++ b/kuzarin_maxim_lab_4/HelloWorld/HelloWorld.csproj
@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_4/HelloWorld/Program.cs
+++ b/kuzarin_maxim_lab_4/HelloWorld/Program.cs
@ -0,0 +1,19 @@
+
+
+using HelloWorld;
+
+string brokerHost = "localhost";
+
+string queueName = "hello";
+
+using var sender = new Sender(brokerHost,"user", "password", queueName);
+
+using var receiver = new Receiver(brokerHost, "user", "password", queueName);
+
+receiver.AddMessageHandler(text => Console.WriteLine($"Received Message from rabbit: {text}"));
+
+Console.WriteLine("Send Message to rabbit: Hellow World!");
+sender.SendMessageToQueue("Hellow World!");
+
+
+while (true) ;
--- a/kuzarin_maxim_lab_4/HelloWorld/Receiver.cs
+++ b/kuzarin_maxim_lab_4/HelloWorld/Receiver.cs
@ -0,0 +1,70 @@
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+
+namespace HelloWorld
+{
+    public class Receiver : IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        private readonly string _queueName;
+
+        public Receiver(string brockerHost, string brockerUsername, string brockerPassword, string queueName)
+        {
+            _queueName = queueName;
+            _connectionFactory = new ConnectionFactory() { HostName = brockerHost, UserName = brockerUsername, Password = brockerPassword };
+            _connection = _connectionFactory.CreateConnection();
+            _channel = _connection.CreateModel();
+
+            _channel.QueueDeclare(queue: _queueName,
+                                    durable: true,
+                                    exclusive: false,
+                                    autoDelete: false,
+                                    arguments: null);
+
+            _channel.BasicQos(prefetchSize: 0, prefetchCount: 1, global: false);
+        }
+
+        public bool AddMessageHandler(Action<string> handler)
+        {
+            try
+            {
+                var consumer = new EventingBasicConsumer(_channel);
+                consumer.Received += (model, ea) =>
+                {
+                    var messageBody = ea.Body.ToArray();
+                    var messageText = Encoding.UTF8.GetString(messageBody);
+
+                    handler(messageText);
+
+                    _channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+                };
+                _channel.BasicConsume(queue: _queueName,
+                                     autoAck: false,
+                                     consumer: consumer);
+                return true;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex.Message);
+            }
+            return false;
+        }
+
+        ~Receiver() => Dispose();
+
+        public void Dispose()
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}
--- a/kuzarin_maxim_lab_4/HelloWorld/Sender.cs
+++ b/kuzarin_maxim_lab_4/HelloWorld/Sender.cs
@ -0,0 +1,62 @@
+using RabbitMQ.Client;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+
+namespace HelloWorld
+{
+    public class Sender : IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        private readonly string _queueName;
+        public Sender(string brockerHost, string brockerUsername, string brockerPassword, string queueName)
+        {
+            _queueName = queueName;
+            _connectionFactory = new ConnectionFactory() { HostName = brockerHost, UserName = brockerUsername, Password = brockerPassword };
+            _connection = _connectionFactory.CreateConnection();
+            _channel = _connection.CreateModel();
+
+            _channel.QueueDeclare(  queue: _queueName,
+                                    durable: true,
+                                    exclusive: false,
+                                    autoDelete: false,
+                                    arguments: null);
+        }
+
+        public bool SendMessageToQueue(string messageText)
+        {
+            try
+            {
+                var messageBody = Encoding.UTF8.GetBytes(messageText);
+
+                var properties = _channel.CreateBasicProperties();
+                properties.Persistent = true;
+
+                _channel.BasicPublish(exchange: string.Empty,
+                                     routingKey: _queueName,
+                                     basicProperties: properties,
+                                     body: messageBody);
+                return true;
+            }
+            catch (Exception ex) 
+            {
+                Console.WriteLine(ex);
+            }
+            return false;
+        }
+
+        ~Sender() => Dispose();
+
+        public void Dispose() 
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}
--- a/kuzarin_maxim_lab_4/Images/FirstService1.png
+++ b/kuzarin_maxim_lab_4/Images/FirstService1.png
--- a/kuzarin_maxim_lab_4/Images/FirstService3.png
+++ b/kuzarin_maxim_lab_4/Images/FirstService3.png
--- a/kuzarin_maxim_lab_4/Images/SecondService.png
+++ b/kuzarin_maxim_lab_4/Images/SecondService.png
--- a/kuzarin_maxim_lab_4/Images/task1.png
+++ b/kuzarin_maxim_lab_4/Images/task1.png
--- a/kuzarin_maxim_lab_4/Images/task2.png
+++ b/kuzarin_maxim_lab_4/Images/task2.png
--- a/kuzarin_maxim_lab_4/Images/task3.png
+++ b/kuzarin_maxim_lab_4/Images/task3.png
--- a/kuzarin_maxim_lab_4/PublishSubscribe/ExchangeReceiver.cs
+++ b/kuzarin_maxim_lab_4/PublishSubscribe/ExchangeReceiver.cs
@ -0,0 +1,87 @@
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+
+namespace PublishSubscribe
+{
+    public class ExchangeReceiver: IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        public Dictionary<string, HashSet<string>> Queues { get; private set; } = new();
+
+        public ExchangeReceiver(string brockerHost, string brockerUsername, string brockerPassword)
+        {
+            _connectionFactory = new ConnectionFactory() { HostName = brockerHost, UserName = brockerUsername, Password = brockerPassword };
+            _connection = _connectionFactory.CreateConnection();
+            _channel = _connection.CreateModel();
+        }
+
+        public bool SubscribeTo(string exchange, Action<string> handler, string? queueName = null)
+        {
+            try
+            {
+                if (!Queues.ContainsKey(exchange))
+                {
+                    _channel.ExchangeDeclare(exchange: "logs", type: ExchangeType.Fanout);
+                    Queues.Add(exchange, new HashSet<string>());
+                }
+                if (queueName != null)
+                    _channel.QueueDeclare(queue: queueName,
+                        durable: true,
+                        exclusive: false,
+                        autoDelete: false,
+                        arguments: null);
+
+                queueName = queueName ?? _channel.QueueDeclare().QueueName;
+
+
+                _channel.QueueBind(queue: queueName,
+                    exchange: exchange,
+                    routingKey: string.Empty);
+
+                var consumer = new EventingBasicConsumer(_channel);
+                consumer.Received += (model, ea) =>
+                {
+                    try
+                    {
+                        var message = Encoding.UTF8.GetString(ea.Body.ToArray());
+                        handler(message);
+                        _channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+                    }
+                    catch (Exception ex)
+                    {
+                        Console.WriteLine(ex.Message);
+                    }
+
+                };
+                _channel.BasicConsume(queue: queueName,
+                                     autoAck: false,
+                                     consumer: consumer);
+
+                Queues[exchange].Add(queueName);
+                return true;
+            }
+            catch(Exception ex)
+            {
+                Console.WriteLine(ex.Message);
+            }
+            return false;
+        }
+
+        ~ExchangeReceiver() => Dispose();
+
+        public void Dispose()
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}
--- a/kuzarin_maxim_lab_4/PublishSubscribe/ExchangeSender.cs
+++ b/kuzarin_maxim_lab_4/PublishSubscribe/ExchangeSender.cs
@ -0,0 +1,70 @@
+using RabbitMQ.Client;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+
+namespace PublishSubscribe
+{
+    public class ExchangeSender: IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        public HashSet<string> Exchanges { get; private set; } = new HashSet<string>();
+
+        public ExchangeSender(string brockerHost, string brockerUsername, string brockerPassword)
+        {
+            _connectionFactory = new ConnectionFactory() { HostName = brockerHost, UserName = brockerUsername, Password = brockerPassword };
+            _connection = _connectionFactory.CreateConnection();
+            _channel = _connection.CreateModel();
+        }
+
+        public bool AddExcange(string exchange, string exchangeType = ExchangeType.Fanout)
+        {
+            try
+            {
+                _channel.ExchangeDeclare(exchange, exchangeType);
+                Exchanges.Add(exchange);
+                return true;
+            }
+            catch (Exception ex) 
+            {
+                Console.WriteLine(ex.Message);
+            }
+            return false;
+        }
+
+        public bool PublishToExchange(string exchange, string message)
+        {
+            try
+            {
+                if (!Exchanges.Contains(exchange))
+                    return false;
+
+                var messageBody = Encoding.UTF8.GetBytes(message);
+                _channel.BasicPublish(exchange: exchange,
+                                     routingKey: string.Empty,
+                                     basicProperties: null,
+                                     body: messageBody);
+                return true;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex.Message);
+            }
+            return false;
+        }
+
+        ~ExchangeSender() => Dispose();
+
+        public void Dispose()
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}
--- a/kuzarin_maxim_lab_4/PublishSubscribe/Program.cs
+++ b/kuzarin_maxim_lab_4/PublishSubscribe/Program.cs
@ -0,0 +1,24 @@
+using PublishSubscribe;
+
+string brokerHost = "localhost";
+
+string exchangeName = "logs";
+
+var sender = new ExchangeSender(brokerHost, "user", "password");
+
+sender.AddExcange(exchangeName);
+
+var receiver1 = new ExchangeReceiver(brokerHost, "user", "password");
+var receiver2 = new ExchangeReceiver(brokerHost, "user", "password");
+
+receiver1.SubscribeTo(exchangeName, message => Console.WriteLine($" [->1] Received: {message}"));
+receiver2.SubscribeTo(exchangeName, message => Console.WriteLine($" [->2] Received: {message}"));
+
+for (int i = 0; i < 10; i++)
+{
+    var message = $"Messga number {i}";
+    Console.WriteLine($" [0->] Send: {message}");
+    sender.PublishToExchange(exchangeName, message);
+}
+
+while (true);
--- a/kuzarin_maxim_lab_4/PublishSubscribe/PublishSubscribe.csproj
+++ b/kuzarin_maxim_lab_4/PublishSubscribe/PublishSubscribe.csproj
@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_4/Publisher/Dockerfile
+++ b/kuzarin_maxim_lab_4/Publisher/Dockerfile
@ -0,0 +1,23 @@
+#See https://aka.ms/customizecontainer to learn how to customize your debug container and how Visual Studio uses this Dockerfile to build your images for faster debugging.
+
+FROM mcr.microsoft.com/dotnet/runtime:8.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["Publisher/Publisher.csproj", "Publisher/"]
+COPY ["PublishSubscribe/PublishSubscribe.csproj", "PublishSubscribe/"]
+RUN dotnet restore "./Publisher/Publisher.csproj"
+COPY . .
+WORKDIR "/src/Publisher"
+RUN dotnet build "./Publisher.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./Publisher.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "Publisher.dll"]
--- a/kuzarin_maxim_lab_4/Publisher/Program.cs
+++ b/kuzarin_maxim_lab_4/Publisher/Program.cs
@ -0,0 +1,51 @@
+
+using PIHelperSh.RandomEx.Extentions;
+using PublishSubscribe;
+using System.Text;
+
+var rabbitHost = Environment.GetEnvironmentVariable("RABBIT_HOST") ?? "localhost";
+var rabbitUsername = Environment.GetEnvironmentVariable("RABBIT_USERNAME") ?? "user";
+var rabbitPassword = Environment.GetEnvironmentVariable("RABBIT_PASSWORD") ?? "password";
+var rabbitExchange = Environment.GetEnvironmentVariable("RABBIT_EXCHANGE") ?? "SorterIn";
+
+var Sender = new ExchangeSender(rabbitHost, rabbitUsername, rabbitPassword);
+
+Sender.AddExcange(rabbitExchange);
+
+var rnd = new Random();
+
+while (true)
+{
+	StringBuilder sb = new();
+
+	sb.Append(rnd.Next().ToString("0000000000"));
+	sb.Append("|");
+
+	switch (rnd.Next(4))
+	{
+		case 0:
+			sb.Append($"0|Прибыла послыка|{rnd.NextString("[0-9]7")}");
+			break;
+		case 1:
+            sb.Append($"1|Прибыла послыка без штрих кода|");
+            break;
+		case 2:
+			var count = rnd.Next(2,8);
+            sb.Append($"2|Прибыла послыка c несколькими кодами|{count}");
+            for (int i = 0; i < count; i++)
+            {
+				sb.Append($"|{rnd.NextString("[0-9]7")}");
+            }
+            break;
+		default:
+            sb.Append($"3|Произошла ошибка|{rnd.Next(500,599)}");
+            break;
+	}
+
+	var text = sb.ToString();
+    Console.WriteLine($"[->]\tОтправлено сообщение\t{text}");
+	Sender.PublishToExchange(rabbitExchange, text);
+
+	await Task.Delay(1000);
+}
+
--- a/kuzarin_maxim_lab_4/Publisher/Properties/launchSettings.json
+++ b/kuzarin_maxim_lab_4/Publisher/Properties/launchSettings.json
@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "Publisher": {
+      "commandName": "Project"
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker"
+    }
+  }
+}
--- a/kuzarin_maxim_lab_4/Publisher/Publisher.csproj
+++ b/kuzarin_maxim_lab_4/Publisher/Publisher.csproj
@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+    <PackageReference Include="PIHelperSh.RandomEx" Version="1.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\PublishSubscribe\PublishSubscribe.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_4/README.md
+++ b/kuzarin_maxim_lab_4/README.md
@ -0,0 +1,39 @@
+# Лабораторная работа 4
+Данная работа посвящена работе с брокером сообщений RabbitMQ.
+## Прохождение tutorial
+Для каждого из уроков был создан отдельный проект, где в Program создаётся producer и concumer(s), а для подтверждения работоспособности использовалась консоль. Скриншоты подтверждения
+### "Hello World!"
+![Task 1](Images\task1.png)
+### Work Queues
+![Task 2](Images\task2.png)
+### Publish/Subscribe
+![Task 3](Images\task3.png)
+## Описание
+Для демонстрационной работы была выбрана предметная область гипотетический системы обработки посылок. Имеется некий сканер, который отправляет устройству сведения через очереди (какие штрих-коды он отсканировал, или, если произошла какая-то ошибка - какая это ошибка). 
+## Запуск
+Для запуска лабораторной работы необходимо иметь запущенный движок Docker на устройстве.
+Необходимо перейти в папку, где располагается данный файл. Далее открыть терминал и ввести команду:
+```
+docker compose up -d --build
+```
+Важно, чтобы в этот момент на компьютере был свободен порт 8081 и 5672.
+Результаты работы системы можно простелить через Web GUI брокера(http://localhost:8081) или посмотрел логи контейнеров. 
+## Исследования
+Первоначальный вариант запуска предполагает, что имеется всего 2 потребителя:
+ 1. Тратит на обработку сообщения 2-3 секунды
+ 2. Тратит на обработку сообщения минимальное возможное время(условно - не тратит вообще ничего)
+Так как производитель отправляет сообщения 1 раз в секунду, можно понять, что первый потребитель не справится с потоком сообщения, в то время как второй будет успевать обрабатывать их. На практике это подтверждается: очередь, куда из exchange попадают сообщения для первого потребителя только растёт(не справляемся с нагрузкой). В то время как у второго значения практически всегда - о.
+<br/>
+![Queue 1](Images\FirstService1.png)
+<br/>
+![Queue 2](Images\SecondService.png)
+<br/>
+Учитывая описанное ранее, можно попробовать решить проблему первого сервиса за счёт горизонтального масштабирования. Теоретически должно хватить 3-х копий, чтобы сообщения не застаивались. На практике эта гипотеза подтвердилась. Очередь пусть и не пустеет, но не становится длиннее.
+<br/>
+![Queue 1 for 3 services](\Images\FirstService3.png)
+
+## Видеодемонстрация
+Был записан видеоролик, демонстрирующий процесс запуска и работы системы. Он расположен по [адресу](https://drive.google.com/file/d/1l7LXVXOb-oRNdS8aJGgeV7xbGCOpi1Es/view?usp=sharing)
+Стоит отметить, что ошибки, которые были видны в логах сервисов связаны с относительно долгим стартом RabbitMQ (несмотря на depands_on брокер не усаапевает подняться, когда сервисы встают, и они не могут подключиться, из-за чего и падают. но из за политики перехапуска их раз за разом востанавливают, до тех пор пока брокер полностью не будет готов принимать сообщения)
+
+
--- a/kuzarin_maxim_lab_4/RabbitTest.sln
+++ b/kuzarin_maxim_lab_4/RabbitTest.sln
@ -0,0 +1,49 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.34916.146
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "HelloWorld", "HelloWorld\HelloWorld.csproj", "{60B7884C-CE35-49A0-821A-50785A154E43}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WorkQueues", "WorkQueues\WorkQueues.csproj", "{556D0467-9405-44C6-A75F-E72F04CB4A82}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PublishSubscribe", "PublishSubscribe\PublishSubscribe.csproj", "{4FDFD479-F6C1-49AE-8EE7-F91E926608AA}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Publisher", "Publisher\Publisher.csproj", "{E92C8339-8C8F-4449-9B75-2DB4563DA494}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Consumer1", "Consumer1\Consumer1.csproj", "{58FFED3D-414A-4575-B6C7-8F82B781BDFC}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{60B7884C-CE35-49A0-821A-50785A154E43}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{60B7884C-CE35-49A0-821A-50785A154E43}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{60B7884C-CE35-49A0-821A-50785A154E43}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{60B7884C-CE35-49A0-821A-50785A154E43}.Release|Any CPU.Build.0 = Release|Any CPU
+		{556D0467-9405-44C6-A75F-E72F04CB4A82}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{556D0467-9405-44C6-A75F-E72F04CB4A82}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{556D0467-9405-44C6-A75F-E72F04CB4A82}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{556D0467-9405-44C6-A75F-E72F04CB4A82}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4FDFD479-F6C1-49AE-8EE7-F91E926608AA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4FDFD479-F6C1-49AE-8EE7-F91E926608AA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4FDFD479-F6C1-49AE-8EE7-F91E926608AA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4FDFD479-F6C1-49AE-8EE7-F91E926608AA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E92C8339-8C8F-4449-9B75-2DB4563DA494}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E92C8339-8C8F-4449-9B75-2DB4563DA494}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E92C8339-8C8F-4449-9B75-2DB4563DA494}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E92C8339-8C8F-4449-9B75-2DB4563DA494}.Release|Any CPU.Build.0 = Release|Any CPU
+		{58FFED3D-414A-4575-B6C7-8F82B781BDFC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{58FFED3D-414A-4575-B6C7-8F82B781BDFC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{58FFED3D-414A-4575-B6C7-8F82B781BDFC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{58FFED3D-414A-4575-B6C7-8F82B781BDFC}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B293D70F-0A74-4F7D-A290-05DFCF97DBCC}
+	EndGlobalSection
+EndGlobal
--- a/kuzarin_maxim_lab_4/RabbitTest/Program.cs
+++ b/kuzarin_maxim_lab_4/RabbitTest/Program.cs
@ -0,0 +1,2 @@
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");
--- a/kuzarin_maxim_lab_4/RabbitTest/RabbitTest.csproj
+++ b/kuzarin_maxim_lab_4/RabbitTest/RabbitTest.csproj
@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_4/WorkQueues/Program.cs
+++ b/kuzarin_maxim_lab_4/WorkQueues/Program.cs
@ -0,0 +1,37 @@
+
+
+using HelloWorld;
+
+string brokerHost = "localhost";
+
+string queueName = "task_queue";
+
+using var sender = new Sender(brokerHost, "user", "password", queueName);
+
+using var receiver1 = new Receiver(brokerHost, "user", "password", queueName);
+using var receiver2 = new Receiver(brokerHost, "user", "password", queueName);
+
+receiver1.AddMessageHandler(text => {
+    Console.WriteLine($"[1] Received Message from rabbit: {text}");
+    int dots = text.Split('.').Length - 1;
+    Thread.Sleep(dots * 1000);
+    Console.WriteLine($"[1] Done Message: {text}");
+});
+receiver2.AddMessageHandler(text => {
+    Console.WriteLine($"[2] Received Message from rabbit: {text}");
+    int dots = text.Split('.').Length - 1;
+    Thread.Sleep(dots * 1000);
+    Console.WriteLine($"[2] Done Message: {text}");
+});
+
+
+for (int i = 0; i < 5; i++)
+{
+    var message = $"Message number {i}{string.Join("", Enumerable.Range(0, i).Select(x=>"."))}";
+    Console.WriteLine($"Send Message to rabbit: {message}");
+    sender.SendMessageToQueue(message);
+}
+
+
+
+while (true) ;
--- a/kuzarin_maxim_lab_4/WorkQueues/WorkQueues.csproj
+++ b/kuzarin_maxim_lab_4/WorkQueues/WorkQueues.csproj
@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\HelloWorld\HelloWorld.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_4/compose.yaml
+++ b/kuzarin_maxim_lab_4/compose.yaml
@ -0,0 +1,87 @@
+services:
+  rabbit:                                       
+    image: rabbitmq:${RABBIT_TAG}               
+    restart: always     
+    ports:  
+      - 5672:5672                               
+      - 8081:15672                              
+    environment:
+      RABBITMQ_DEFAULT_USER: ${RABBIT_USERNAME} 
+      RABBITMQ_DEFAULT_PASS: ${RABBIT_PASSWORD}
+  
+  publisher:
+    build: 
+      context: .
+      dockerfile: ./Publisher/Dockerfile
+    restart: always
+    depends_on:
+      - rabbit
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: ${RABBIT_USERNAME}
+      RABBIT_PASSWORD: ${RABBIT_PASSWORD}
+      RABBIT_EXCHANGE: 'SorterIn'
+
+  concumer1:
+    build: 
+      context: .
+      dockerfile: ./Consumer1/Dockerfile
+    restart: always
+    depends_on:
+      - rabbit
+      - publisher
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: ${RABBIT_USERNAME}
+      RABBIT_PASSWORD: ${RABBIT_PASSWORD}
+      RABBIT_EXCHANGE: 'SorterIn'
+      RABBIT_QUEUE: 'SorterFirst'
+      HAS_DELAY: "true"
+
+  concumer2:
+    build: 
+      context: .
+      dockerfile: ./Consumer1/Dockerfile
+    restart: always
+    depends_on:
+      - rabbit
+      - publisher
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: ${RABBIT_USERNAME}
+      RABBIT_PASSWORD: ${RABBIT_PASSWORD}
+      RABBIT_EXCHANGE: 'SorterIn'
+      RABBIT_QUEUE: 'SorterSecond'
+      HAS_DELAY: "false"
+
+  concumer12:
+    build: 
+      context: .
+      dockerfile: ./Consumer1/Dockerfile
+    restart: always
+    depends_on:
+      - rabbit
+      - publisher
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: ${RABBIT_USERNAME}
+      RABBIT_PASSWORD: ${RABBIT_PASSWORD}
+      RABBIT_EXCHANGE: 'SorterIn'
+      RABBIT_QUEUE: 'SorterFirst'
+      HAS_DELAY: "true"
+
+  concumer13:
+    build: 
+      context: .
+      dockerfile: ./Consumer1/Dockerfile
+    restart: always
+    depends_on:
+      - rabbit
+      - publisher
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: ${RABBIT_USERNAME}
+      RABBIT_PASSWORD: ${RABBIT_PASSWORD}
+      RABBIT_EXCHANGE: 'SorterIn'
+      RABBIT_QUEUE: 'SorterFirst'
+      HAS_DELAY: "true"