Merge pull request '[Л/Р 4] Савицкий Александр' (#75) from Savitskiy_ISEbd-41/distributed-computing:savitskiy_av_lab4 into main

Reviewed-on: http://student.git.athene.tech/v.moiseev/distributed-computing/pulls/75

tasks/savitskiy-al/lab_4/.gitignore

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+var/result/ 
+
+## 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/master/VisualStudio.gitignore
+
+# User-specific files
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+# User-specific files (MonoDevelop/Xamarin Studio)
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+# Mono auto generated files
+mono_crash.*
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+# Visual Studio 2015/2017 cache/options directory
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+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
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+# Visual Studio 2017 auto generated files
+Generated\ Files/
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+# MSTest test Results
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+# NUnit
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+TestResult.xml
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+# Build Results of an ATL Project
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+# Benchmark Results
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+ScaffoldingReadMe.txt
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+# StyleCop
+StyleCopReport.xml
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+# Files built by Visual Studio
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+# Chutzpah Test files
+_Chutzpah*
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+# Visual C++ cache files
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+# Visual Studio code coverage results
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+# NCrunch
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+nCrunchTemp_*
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+# MightyMoose
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+# Web workbench (sass)
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+# DocProject is a documentation generator add-in
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+# Click-Once directory
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+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
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+# Microsoft Azure Web App publish settings. Comment the next line if you want to
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+# NuGet Packages
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+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
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+# Microsoft Azure Build Output
+csx/
+*.build.csdef
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+# Microsoft Azure Emulator
+ecf/
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+# Windows Store app package directories and files
+AppPackages/
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+Package.StoreAssociation.xml
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+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
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+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
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+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
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+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
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+# Visual Studio 6 workspace options file
+*.opt
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+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
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+# Tabs Studio
+*.tss
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+# Telerik's JustMock configuration file
+*.jmconfig
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+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
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+# OpenCover UI analysis results
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+# Azure Stream Analytics local run output
+ASALocalRun/
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+# MSBuild Binary and Structured Log
+*.binlog
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+# NVidia Nsight GPU debugger configuration file
+*.nvuser
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+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
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+# Local History for Visual Studio
+.localhistory/
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+# BeatPulse healthcheck temp database
+healthchecksdb
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+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
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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
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+##
+## Visual studio for Mac
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+
+# globs
+Makefile.in
+*.userprefs
+*.usertasks
+config.make
+config.status
+aclocal.m4
+install-sh
+autom4te.cache/
+*.tar.gz
+tarballs/
+test-results/
+
+# Mac bundle stuff
+*.dmg
+*.app
+
+# content below from: https://github.com/github/gitignore/blob/master/Global/macOS.gitignore
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
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+# Icon must end with two \r
+Icon
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+
+# Thumbnails
+._*
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+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# 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
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+# Recycle Bin used on file shares
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+## Visual Studio Code
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+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json

tasks/savitskiy-al/lab_4/MainTask/worker-1/worker-1.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-1", "worker-1\worker-1.csproj", "{D4114F5B-2678-4D25-9D48-421B1A8D36BB}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {ED04EA40-ABD4-46CE-AC52-54B0F292FD16}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/MainTask/worker-1/worker-1/Program.cs

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+using System.Text;
+using RabbitMQ.Client;
+
+Random rand = new Random();
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.ExchangeDeclare(exchange: "boardProcessing", type: ExchangeType.Fanout);
+
+foreach (var item in Enumerable.Range(0, 1000))
+{
+    var message = rand.Next().ToString();
+
+    var body = Encoding.UTF8.GetBytes(message);
+    channel.BasicPublish(exchange: "boardProcessing",
+            routingKey: string.Empty,
+            basicProperties: null,
+            body: body);
+
+    Console.WriteLine($" [x] Готово изделие {message}");
+    await Task.Delay(500);
+}
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();
+
+static string GetMessage(string[] args)
+{
+    return ((args.Length > 0) ? string.Join(" ", args) : "info: Hello World!");
+}

tasks/savitskiy-al/lab_4/MainTask/worker-1/worker-1/worker-1.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_1</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/MainTask/worker-2/worker-2.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-2", "worker-2\worker-2.csproj", "{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {EC5624E4-6B53-42F7-A049-AF1FB2306297}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/MainTask/worker-2/worker-2/Program.cs

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+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: "automatic");
+channel.QueueBind(queue: "automatic",
+    exchange: "boardProcessing",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Waiting for messages.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += async (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+
+    string outputText = $"Станок моментально обработал изделие {message}";
+    Console.WriteLine($" [x] Done. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: "automatic",
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();

tasks/savitskiy-al/lab_4/MainTask/worker-2/worker-2/worker-2.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_2</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/MainTask/worker-3/worker-3.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-3", "worker-3\worker-3.csproj", "{2EC418DF-12D3-4698-B3D7-97AC01782596}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2EC418DF-12D3-4698-B3D7-97AC01782596}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2EC418DF-12D3-4698-B3D7-97AC01782596}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2EC418DF-12D3-4698-B3D7-97AC01782596}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2EC418DF-12D3-4698-B3D7-97AC01782596}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {464A24FA-0780-4838-8EC3-769E4C3B3E96}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/MainTask/worker-3/worker-3/Program.cs

@@ -0,0 +1,37 @@
+using System.Text;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+Random rand = new Random();
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+string queueName = $"manual{rand.Next()}";
+
+channel.QueueDeclare(queue: queueName);
+channel.QueueBind(queue: queueName,
+    exchange: "boardProcessing",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Waiting for messages.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += async (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+
+    int waitTime = rand.Next(20, 90);
+    Thread.Sleep(waitTime * 100);
+
+    string outputText = $"Ручная обработка изделия {message} заняла {waitTime}";
+    Console.WriteLine($" [x] Done. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: queueName,
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();

tasks/savitskiy-al/lab_4/MainTask/worker-3/worker-3/worker-3.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_3</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/README.md

@@ -0,0 +1,159 @@
+# Отчет по лабораторной работе №4
+
+Выполнил студент гр. ИСЭбд-41 Савицкий А.В.
+
+## Прохождение tutorial
+
+Установил rabbitMQ server, erlang и зашел в брокер под гостем по http://localhost:15672/#/ 
+
+Туториал 1:
+
+![](pic/tut1.png)
+
+Туториал 2:
+
+![](pic/tut2.png)
+
+Туториал 3:
+
+![](pic/tut3.png)
+
+## Разработка демонстрационных приложений
+
+Предметная область: Обработка изделий. Производитель - поставщик изделий, который сигнализирует о том, что изделие готово к обработке. Потребитель 1 - специалист, который вручную обрабатывает изделие и тратит время. Потребитель 2 - автоматическая обработка станком, считается что станок обрабатывает изделие моментально и не тратит время.
+
+1. Publisher
+
+```cs
+using System.Text;
+using RabbitMQ.Client;
+
+Random rand = new Random();
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+channel.ExchangeDeclare(exchange: "boardProcessing", type: ExchangeType.Fanout);
+
+foreach (var item in Enumerable.Range(0, 1000))
+{
+    var message = rand.Next().ToString();
+
+    var body = Encoding.UTF8.GetBytes(message);
+    channel.BasicPublish(exchange: "boardProcessing",
+            routingKey: string.Empty,
+            basicProperties: null,
+            body: body);
+
+    Console.WriteLine($" [x] Готов заказ {message}");
+    await Task.Delay(500);
+}
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();
+
+static string GetMessage(string[] args)
+{
+    return ((args.Length > 0) ? string.Join(" ", args) : "info: Hello World!");
+}
+```
+
+2. Consumer 1.
+
+```cs
+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: "automatic");
+channel.QueueBind(queue: "automatic",
+    exchange: "boardProcessing",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Waiting for messages.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += async (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+
+    string outputText = $"Станок моментально обработал изделие {message}";
+    Console.WriteLine($" [x] Done. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: "automatic",
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();
+```
+
+3. Consumer 2.
+
+```cs
+using System.Text;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+Random rand = new Random();
+var factory = new ConnectionFactory { HostName = "localhost" };
+using var connection = factory.CreateConnection();
+using var channel = connection.CreateModel();
+
+string queueName = $"manual{rand.Next()}";
+
+channel.QueueDeclare(queue: queueName);
+channel.QueueBind(queue: queueName,
+    exchange: "boardProcessing",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Waiting for messages.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += async (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+
+    int waitTime = rand.Next(20, 90);
+    Thread.Sleep(waitTime * 100);
+
+    string outputText = $"Ручная обработка изделия {message} заняла {waitTime}";
+    Console.WriteLine($" [x] Done. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: queueName,
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Press [enter] to exit.");
+Console.ReadLine();
+```
+
+## Результаты выполнения лабораторной работы
+
+Потребителю один соответствует очередь automatic, а потребителю два - очередь manual.
+
+Запуск двух экземпляров потребителя два и по одному экземпляру потребителя один и заказчика: 
+![](pic/1.PNG)
+Очередь ручной обработки.
+![](pic/2.PNG)
+Очередь автоматической обработки
+![](pic/3.PNG)
+
+ Как видно, первый потребитель работает без задержки, а очередь второго потребителя переполенена. Из этого следует, что скорость первого в разы выше, и он потребляет намного меньше памяти за счет постоянно пустой очереди.
+
+Теперь добавим еще одного потребителя с ручной обработкой
+![](pic/4.PNG)
+Очередь ручной обработки.
+![](pic/6.PNG)
+Очередь автоматической обработки
+![](pic/7.PNG)
+
+Ситуация в очередью потребителя один не изменилась, а экземпляры потребителя два теперь затрачивают в 2 раза больше времени и памяти, их очереди так же переполнены, как и в ситуации выше.

tasks/savitskiy-al/lab_4/Tut1/worker-1/worker-1.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-1", "worker-1\worker-1.csproj", "{A6034879-0CBB-4385-9D2F-B399BC7A0D1E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A6034879-0CBB-4385-9D2F-B399BC7A0D1E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A6034879-0CBB-4385-9D2F-B399BC7A0D1E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A6034879-0CBB-4385-9D2F-B399BC7A0D1E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A6034879-0CBB-4385-9D2F-B399BC7A0D1E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B2FED482-66BF-47C8-8220-8C75B48CD004}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/Tut1/worker-1/worker-1/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();

tasks/savitskiy-al/lab_4/Tut1/worker-1/worker-1/worker-1.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_1</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/Tut1/worker-2/worker-2.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-2", "worker-2\worker-2.csproj", "{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{33E9DE33-CF9C-4343-A2C4-005FCFCF5A9F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {EC5624E4-6B53-42F7-A049-AF1FB2306297}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/Tut1/worker-2/worker-2/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();

tasks/savitskiy-al/lab_4/Tut1/worker-2/worker-2/worker-2.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_2</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/Tut2/worker-1/worker-1.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-1", "worker-1\worker-1.csproj", "{D4114F5B-2678-4D25-9D48-421B1A8D36BB}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {ED04EA40-ABD4-46CE-AC52-54B0F292FD16}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/Tut2/worker-1/worker-1/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();

tasks/savitskiy-al/lab_4/Tut2/worker-1/worker-1/worker-1.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_1</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/Tut2/worker-2/worker-2.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-2", "worker-2\worker-2.csproj", "{70F98125-F463-4504-A318-7522FC1A5281}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{70F98125-F463-4504-A318-7522FC1A5281}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{70F98125-F463-4504-A318-7522FC1A5281}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{70F98125-F463-4504-A318-7522FC1A5281}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{70F98125-F463-4504-A318-7522FC1A5281}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2F4B29CA-8206-494B-8A7C-48F847186ACD}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/Tut2/worker-2/worker-2/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!");
+}

tasks/savitskiy-al/lab_4/Tut2/worker-2/worker-2/worker-2.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_2</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/Tut3/worker-1/worker-1.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-1", "worker-1\worker-1.csproj", "{D4114F5B-2678-4D25-9D48-421B1A8D36BB}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D4114F5B-2678-4D25-9D48-421B1A8D36BB}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {ED04EA40-ABD4-46CE-AC52-54B0F292FD16}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/Tut3/worker-1/worker-1/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!");
+}

tasks/savitskiy-al/lab_4/Tut3/worker-1/worker-1/worker-1.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_1</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/savitskiy-al/lab_4/Tut3/worker-2/worker-2.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34322.80
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "worker-2", "worker-2\worker-2.csproj", "{70F98125-F463-4504-A318-7522FC1A5281}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{70F98125-F463-4504-A318-7522FC1A5281}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{70F98125-F463-4504-A318-7522FC1A5281}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{70F98125-F463-4504-A318-7522FC1A5281}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{70F98125-F463-4504-A318-7522FC1A5281}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2F4B29CA-8206-494B-8A7C-48F847186ACD}
+	EndGlobalSection
+EndGlobal

tasks/savitskiy-al/lab_4/Tut3/worker-2/worker-2/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();

tasks/savitskiy-al/lab_4/Tut3/worker-2/worker-2/worker-2.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>worker_2</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="RabbitMQ.Client" Version="6.7.0" />
+  </ItemGroup>
+
+</Project>