поправили readme

.gitignore

@@ -7,3 +7,29 @@
 /dozorova_alena_lab_2/ConsoleApp2/.vs
 /dozorova_alena_lab_2/ConsoleApp2/bin
 /dozorova_alena_lab_2/ConsoleApp2/obj
+/dozorova_alena_lab_3/PostService/.vs
+/dozorova_alena_lab_3/WorkerService/.vs
+/dozorova_alena_lab_4/Receive/bin
+/dozorova_alena_lab_4/Receive/obj
+/dozorova_alena_lab_4/Send/bin
+/dozorova_alena_lab_4/Send/obj
+/dozorova_alena_lab_4/EmitLog/.vs
+/dozorova_alena_lab_4/EmitLog/obj
+/dozorova_alena_lab_4/NewTask/.vs
+/dozorova_alena_lab_4/NewTask/bin
+/dozorova_alena_lab_4/NewTask/obj
+/dozorova_alena_lab_4/ReceiveLogs/obj
+/dozorova_alena_lab_4/Worker/.vs
+/dozorova_alena_lab_4/Worker/bin
+/dozorova_alena_lab_4/Worker/obj
+/dozorova_alena_lab_4/EmitLog/bin
+/dozorova_alena_lab_4/ReceiveLogs/.vs
+/dozorova_alena_lab_4/ReceiveLogs/bin
+/dozorova_alena_lab_4/ConsumerDelay/.vs
+/dozorova_alena_lab_4/ConsumerDelay/obj
+/dozorova_alena_lab_4/ConsumerDelay/Properties
+/dozorova_alena_lab_4/ConsumerSimple/.vs
+/dozorova_alena_lab_4/ConsumerSimple/obj
+/dozorova_alena_lab_4/Publisher/.vs
+/dozorova_alena_lab_4/Publisher/bin
+/dozorova_alena_lab_4/Publisher/obj

dozorova_alena_lab_4/ConsumerDelay/.dockerignore

@@ -0,0 +1,30 @@
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**

dozorova_alena_lab_4/ConsumerDelay/ConsumerDelay.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+    <DockerfileContext>.</DockerfileContext>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+  </ItemGroup>
+
+</Project>

dozorova_alena_lab_4/ConsumerDelay/ConsumerDelay.csproj.user

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>Container (Dockerfile)</ActiveDebugProfile>
+  </PropertyGroup>
+</Project>

dozorova_alena_lab_4/ConsumerDelay/ConsumerDelay.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.35004.147
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsumerDelay", "ConsumerDelay.csproj", "{4DD86D5F-D90D-4BBB-AAA4-F16DA855B51E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4DD86D5F-D90D-4BBB-AAA4-F16DA855B51E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4DD86D5F-D90D-4BBB-AAA4-F16DA855B51E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4DD86D5F-D90D-4BBB-AAA4-F16DA855B51E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4DD86D5F-D90D-4BBB-AAA4-F16DA855B51E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3E7AED20-0868-42FE-9C39-581BC9D2BB22}
+	EndGlobalSection
+EndGlobal

dozorova_alena_lab_4/ConsumerDelay/Dockerfile

@@ -0,0 +1,22 @@
+#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:6.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["ConsumerDelay.csproj", "."]
+RUN dotnet restore "./ConsumerDelay.csproj"
+COPY . .
+WORKDIR "/src/."
+RUN dotnet build "./ConsumerDelay.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./ConsumerDelay.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "ConsumerDelay.dll"]

dozorova_alena_lab_4/ConsumerDelay/Program.cs

@@ -0,0 +1,24 @@
+using ConsumerDelay;
+
+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") ?? "ReportIn";
+var rabbitQueue = Environment.GetEnvironmentVariable("RABBIT_QUEUE") ?? "Second";
+
+Thread.Sleep(2000);
+
+var receiver = new Receiver(rabbitHost, rabbitUsername, rabbitPassword);
+
+receiver.SubscribeTo(rabbitExchange, (message) =>
+{
+    var rnd = new Random();
+
+    Console.WriteLine($"Пришло сообщение: {message}");
+
+    Thread.Sleep(rnd.Next(2000, 3000));
+    Console.WriteLine($"Обработка сообщения завершена");
+},
+rabbitQueue);
+
+while (true) ;

dozorova_alena_lab_4/ConsumerDelay/Receiver.cs

@@ -0,0 +1,82 @@
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+using System.Text;
+
+namespace ConsumerDelay
+{
+    public class Receiver : IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        public Dictionary<string, HashSet<string>> Queues { get; private set; } = new();
+
+        public Receiver(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;
+        }
+
+        ~Receiver() => Dispose();
+
+        public void Dispose()
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}

dozorova_alena_lab_4/ConsumerSimple/.dockerignore

@@ -0,0 +1,30 @@
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**

dozorova_alena_lab_4/ConsumerSimple/ConsumerSimple.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+    <DockerfileContext>.</DockerfileContext>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+  </ItemGroup>
+
+</Project>

dozorova_alena_lab_4/ConsumerSimple/ConsumerSimple.csproj.user

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>Container (Dockerfile)</ActiveDebugProfile>
+  </PropertyGroup>
+</Project>

dozorova_alena_lab_4/ConsumerSimple/ConsumerSimple.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.35004.147
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsumerSimple", "ConsumerSimple.csproj", "{ACA8DE52-E29E-41BA-B3DA-213AF316685E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{ACA8DE52-E29E-41BA-B3DA-213AF316685E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{ACA8DE52-E29E-41BA-B3DA-213AF316685E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{ACA8DE52-E29E-41BA-B3DA-213AF316685E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{ACA8DE52-E29E-41BA-B3DA-213AF316685E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {73265D6C-436C-470E-AE8A-17047E6C2ECC}
+	EndGlobalSection
+EndGlobal

dozorova_alena_lab_4/ConsumerSimple/Dockerfile

@@ -0,0 +1,22 @@
+#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:6.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["ConsumerSimple.csproj", "."]
+RUN dotnet restore "./ConsumerSimple.csproj"
+COPY . .
+WORKDIR "/src/."
+RUN dotnet build "./ConsumerSimple.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./ConsumerSimple.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "ConsumerSimple.dll"]

dozorova_alena_lab_4/ConsumerSimple/Program.cs

@@ -0,0 +1,23 @@
+using ConsumerSimple;
+
+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") ?? "ReportIn";
+var rabbitQueue = Environment.GetEnvironmentVariable("RABBIT_QUEUE") ?? "First";
+
+Thread.Sleep(2000);
+
+var receiver = new Receiver(rabbitHost, rabbitUsername, rabbitPassword);
+
+receiver.SubscribeTo(rabbitExchange, (message) =>
+{
+    var rnd = new Random();
+
+    Console.WriteLine($"Пришло сообщение: {message}");
+
+    Console.WriteLine($"Сообщение обрабатывается мгновенно");
+},
+rabbitQueue);
+
+while (true) ;

dozorova_alena_lab_4/ConsumerSimple/Properties/launchSettings.json

@@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "ConsumerSimple": {
+      "commandName": "Project"
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker"
+    }
+  }
+}

dozorova_alena_lab_4/ConsumerSimple/Receiver.cs

@@ -0,0 +1,82 @@
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+using System.Text;
+
+namespace ConsumerSimple
+{
+    public class Receiver : IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        public Dictionary<string, HashSet<string>> Queues { get; private set; } = new();
+
+        public Receiver(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;
+        }
+
+        ~Receiver() => Dispose();
+
+        public void Dispose()
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}

dozorova_alena_lab_4/EmitLog/EmitLog..csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>EmitLog_</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+  </ItemGroup>
+
+</Project>

dozorova_alena_lab_4/EmitLog/Program.cs

@@ -0,0 +1,24 @@
+using System.Text;
+using RabbitMQ.Client;
+
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.ExchangeDeclare(exchange: "logs", type: ExchangeType.Fanout);
+
+var message = GetMessage(args);
+var body = Encoding.UTF8.GetBytes(message);
+channel.BasicPublish(exchange: "logs",
+                     routingKey: string.Empty,
+                     basicProperties: null,
+                     body: body);
+Console.WriteLine($" [x] Sent {message}");
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();
+
+static string GetMessage(string[] args)
+{
+    return ((args.Length > 0) ? string.Join(" ", args) : "info: Hello World!");
+}

dozorova_alena_lab_4/NewTask/NewTask.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>

dozorova_alena_lab_4/NewTask/Program.cs

@@ -0,0 +1,32 @@
+using System.Text;
+using RabbitMQ.Client;
+
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.QueueDeclare(queue: "task_queue",
+                     durable: true,
+                     exclusive: false,
+                     autoDelete: false,
+                     arguments: null);
+
+var message = GetMessage(args);
+var body = Encoding.UTF8.GetBytes(message);
+
+var properties = channel.CreateBasicProperties();
+properties.Persistent = true;
+
+channel.BasicPublish(exchange: string.Empty,
+                     routingKey: "task_queue",
+                     basicProperties: properties,
+                     body: body);
+Console.WriteLine($" [x] Sent {message}");
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();
+
+static string GetMessage(string[] args)
+{
+    return ((args.Length > 0) ? string.Join(" ", args) : "Hello World!");
+}

dozorova_alena_lab_4/Publisher/.dockerignore

@@ -0,0 +1,30 @@
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**

dozorova_alena_lab_4/Publisher/Dockerfile

@@ -0,0 +1,20 @@
+FROM mcr.microsoft.com/dotnet/runtime:6.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["Publisher.csproj", "."]
+RUN dotnet restore "./Publisher.csproj"
+COPY . .
+WORKDIR "/src/."
+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"]

dozorova_alena_lab_4/Publisher/Program.cs

@@ -0,0 +1,40 @@
+using Publisher;
+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") ?? "ReportIn";
+
+var sender = new Sender(rabbitHost, rabbitUsername, rabbitPassword);
+
+sender.AddExcange(rabbitExchange);
+
+var rnd = new Random();
+
+while (true)
+{
+    StringBuilder sb = new();
+
+    var type = rnd.Next();
+    switch (type%2)
+    {
+        case 0:
+            {
+                sb.Append($"Был запрошен отчет о данных под номером {rnd.Next(1000)}");
+                break;
+            }
+        case 1:
+            {
+                sb.Append($"Был запрошен отчет об ошибках под номером {rnd.Next(1000)}");
+                break;
+            }
+    }
+
+    var text = sb.ToString();
+    Console.WriteLine($"Было опубликовано сообщение: {text}");
+    sender.PublishToExchange(rabbitExchange, text);
+
+    await Task.Delay(1000);
+}
+

dozorova_alena_lab_4/Publisher/Properties/launchSettings.json

@@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "Publisher": {
+      "commandName": "Project"
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker"
+    }
+  }
+}

dozorova_alena_lab_4/Publisher/Publisher.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+    <DockerfileContext>.</DockerfileContext>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+  </ItemGroup>
+
+</Project>

dozorova_alena_lab_4/Publisher/Publisher.csproj.user

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>Container (Dockerfile)</ActiveDebugProfile>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DebuggerFlavor>ProjectDebugger</DebuggerFlavor>
+  </PropertyGroup>
+</Project>

dozorova_alena_lab_4/Publisher/Publisher.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.35004.147
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Publisher", "Publisher.csproj", "{C23890FA-A4DD-4E5B-897F-37210C2F60CE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C23890FA-A4DD-4E5B-897F-37210C2F60CE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C23890FA-A4DD-4E5B-897F-37210C2F60CE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C23890FA-A4DD-4E5B-897F-37210C2F60CE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C23890FA-A4DD-4E5B-897F-37210C2F60CE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3BB20EB3-DE49-46CE-8C7A-D956E3DE90BC}
+	EndGlobalSection
+EndGlobal

dozorova_alena_lab_4/Publisher/Sender.cs

@@ -0,0 +1,69 @@
+using RabbitMQ.Client;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Publisher
+{
+    public class Sender : IDisposable
+    {
+        private readonly ConnectionFactory _connectionFactory;
+        private readonly IConnection _connection;
+        private readonly IModel _channel;
+
+        public HashSet<string> Exchanges { get; private set; } = new HashSet<string>();
+
+        public Sender(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;
+        }
+
+        ~Sender() => Dispose();
+
+        public void Dispose()
+        {
+            _connection.Dispose();
+            _channel.Dispose();
+        }
+    }
+}

dozorova_alena_lab_4/README.md

@@ -0,0 +1,39 @@
+# Лабораторная работа 4
+В рамках данной работы были реализованы несколько проектов, работающих с RabbitMQ.
+## tutorial
+Для каждого урока были созданы консольные проекты 
+### "Hello World!"
+![Task 1](image-4.png)
+### Work Queues
+![Task 2](image-5.png)
+### Publish/Subscribe
+![Task 3](image-6.png)
+## Описание
+В качестве предметной области была выбрана система запросов отчета двух видов: отчета и ошибок.  
+## Запуск
+Для запуска лабораторной работы необходимо иметь запущенный Docker на устройстве.
+Необходимо перейти в папку, где располагается данный файл. Далее открыть терминал и ввести команду:
+```
+docker compose up -d --build
+```
+Порты для RabbitMQ были 8081 (для UI) и 5672.
+## Анализ
+Первоначальный вариант запуска предполагает, что имеется всего 2 потребителя:
+ 1. Тратит на обработку сообщения 2-3 секунды
+ 2. Тратит на обработку сообщения крайне малое время
+Задержка при обработке понижает пропускную способность обработчика, что вызывает переполнение очереди. Это подтверждается скринами.
+<br/>
+![alt text](image.png)
+<br/>
+![alt text](image-1.png)
+<br/>
+Теперь запустим несколько обычных обработчиков. Очередь не переполнена постоянно, а периодически, соответственно обработчики вполне справляются с потоком сообщений и увеличение их количества позволит в принципе избавиться от переполнения 
+<br/>
+![alt text](image-2.png)
+<br/>
+![alt text](image-3.png)
+
+## Видеодемонстрация
+Демонстрация: (https://drive.google.com/file/d/16gJMGbMKSFZ_I5gCzuDekpAqUrhbpFRA/view?usp=sharing) Стоит обратить внимание на то, что настройки docker compose файла не гарантируют верный порядок подъема контейнеров, из-за чего некоторые контейнеры пришлось перезапустить.
+
+

dozorova_alena_lab_4/Receive/Program.cs

@@ -0,0 +1,29 @@
+using System.Text;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.QueueDeclare(queue: "hello",
+                     durable: false,
+                     exclusive: false,
+                     autoDelete: false,
+                     arguments: null);
+
+Console.WriteLine(" [*] Waiting for messages.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += (model, ea) =>
+{
+    var body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+    Console.WriteLine($" [x] Received {message}");
+};
+channel.BasicConsume(queue: "hello",
+                     autoAck: true,
+                     consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();

dozorova_alena_lab_4/Receive/Receive.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>

dozorova_alena_lab_4/ReceiveLogs/Program.cs

@@ -0,0 +1,31 @@
+using System.Text;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.ExchangeDeclare(exchange: "logs", type: ExchangeType.Fanout);
+
+// declare a server-named queue
+var queueName = channel.QueueDeclare().QueueName;
+channel.QueueBind(queue: queueName,
+                  exchange: "logs",
+                  routingKey: string.Empty);
+
+Console.WriteLine(" [*] Waiting for logs.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+    Console.WriteLine($" [x] {message}");
+};
+channel.BasicConsume(queue: queueName,
+                     autoAck: true,
+                     consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();

dozorova_alena_lab_4/ReceiveLogs/ReceiveLogs.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>

dozorova_alena_lab_4/Send/Program.cs

@@ -0,0 +1,24 @@
+using System.Text;
+using RabbitMQ.Client;
+
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.QueueDeclare(queue: "hello",
+                     durable: false,
+                     exclusive: false,
+                     autoDelete: false,
+                     arguments: null);
+
+const string message = "Hello World!";
+var body = Encoding.UTF8.GetBytes(message);
+
+channel.BasicPublish(exchange: string.Empty,
+                     routingKey: "hello",
+                     basicProperties: null,
+                     body: body);
+Console.WriteLine($" [x] Sent {message}");
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();

dozorova_alena_lab_4/Send/Send.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>

dozorova_alena_lab_4/Worker/Program.cs

@@ -0,0 +1,39 @@
+using System.Text;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.QueueDeclare(queue: "task_queue",
+                     durable: true,
+                     exclusive: false,
+                     autoDelete: false,
+                     arguments: null);
+
+channel.BasicQos(prefetchSize: 0, prefetchCount: 1, global: false);
+
+Console.WriteLine(" [*] Waiting for messages.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+    Console.WriteLine($" [x] Received {message}");
+
+    int dots = message.Split('.').Length - 1;
+    Thread.Sleep(dots * 1000);
+
+    Console.WriteLine(" [x] Done");
+
+    // here channel could also be accessed as ((EventingBasicConsumer)sender).Model
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: "task_queue",
+                     autoAck: false,
+                     consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();

dozorova_alena_lab_4/Worker/Worker.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>

dozorova_alena_lab_4/docker-compose.yaml

@@ -0,0 +1,59 @@
+services:
+  rabbit:                                       
+    image: rabbitmq:3.10.7-management             
+    restart: always     
+    ports:  
+      - 5672:5672                               
+      - 8081:15672                              
+    environment:
+      RABBITMQ_DEFAULT_USER: admin 
+      RABBITMQ_DEFAULT_PASS: admin
+  
+  publisher:
+    build: ./Publisher/
+    restart: always
+    depends_on:
+      - rabbit
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: admin
+      RABBIT_PASSWORD: admin
+      RABBIT_EXCHANGE: 'ReportIn'
+
+  concumer1:
+    build: ./ConsumerSimple/
+    restart: always
+    depends_on:
+      - rabbit
+      - publisher
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: admin
+      RABBIT_PASSWORD: admin
+      RABBIT_EXCHANGE: 'ReportIn'
+      RABBIT_QUEUE: 'First'
+
+  concumer2:
+    build: ./ConsumerSimple/
+    restart: always
+    depends_on:
+      - rabbit
+      - publisher
+    environment:
+      RABBIT_HOST: rabbit
+      RABBIT_USERNAME: admin
+      RABBIT_PASSWORD: admin
+      RABBIT_EXCHANGE: 'ReportIn'
+      RABBIT_QUEUE: 'Second'
+  # concumer2:
+  #   build: ./ConsumerDelay/
+  #   restart: always
+  #   depends_on:
+  #     - rabbit
+  #     - publisher
+  #   environment:
+  #     RABBIT_HOST: rabbit
+  #     RABBIT_USERNAME: admin
+  #     RABBIT_PASSWORD: admin
+  #     RABBIT_EXCHANGE: 'ReportIn'
+  #     RABBIT_QUEUE: 'Second'