Merge pull request '[Л/Р 4] Казаков Евгений' (#120) from EugeneKazakov/distributed-computing:kazakov-ev-lab_4 into main

Reviewed-on: http://student.git.athene.tech/v.moiseev/distributed-computing/pulls/120

tasks/kazakov-ev/lab_4/.gitignore

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+var/result/ 
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tasks/kazakov-ev/lab_4/MainTask/Consumer1/Consumer1.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: "mail");
+channel.QueueBind(queue: "mail",
+    exchange: "post",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Ожидание сообщения.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += async (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+
+    string outputText = $"Письмо было отправлено почтой {message}";
+    Console.WriteLine($" [x] Сделано. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: "mail",
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Нажми [enter] чтобы выйти.");
+Console.ReadLine();

tasks/kazakov-ev/lab_4/MainTask/Consumer1/Consumer1.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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/MainTask/Consumer2/Consumer2.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 = $"courier{rand.Next()}";
+
+channel.QueueDeclare(queue: queueName);
+channel.QueueBind(queue: queueName,
+    exchange: "post",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Ожидание сообщения.");
+
+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 = $"Курьер с письмом потратил {waitTime} минут и доставил письмо {message}";
+    Console.WriteLine($" [x] Сделано. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: queueName,
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Нажми [enter] чтобы выйти.");
+Console.ReadLine();

tasks/kazakov-ev/lab_4/MainTask/Consumer2/Consumer2.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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/MainTask/Publisher/Publisher.cs

@@ -0,0 +1,31 @@
+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: "post", 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: "post",
+            routingKey: string.Empty,
+            basicProperties: null,
+            body: body);
+
+    Console.WriteLine($" [x] Письмо готово {message}");
+    await Task.Delay(500);
+}
+
+Console.WriteLine(" Нажми [enter] чтобы выйти.");
+Console.ReadLine();
+
+static string GetMessage(string[] args)
+{
+    return ((args.Length > 0) ? string.Join(" ", args) : "info: Привет Мир!");
+}

tasks/kazakov-ev/lab_4/MainTask/Publisher/Publisher.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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/README.md

@@ -0,0 +1,151 @@
+# Отчет по лабораторной работе №4
+
+Выполнил студент гр. ИСЭбд-41 Казаков Е.В.
+
+## Прохождение tutorial
+
+Установил rabbitMQ server, erlang и зашел в брокер под гостем по http://localhost:15672/#/ 
+
+Туториал 1:
+
+![](pic/1.png)
+![](pic/1.1.png)
+
+Туториал 2:
+
+![](pic/2.png)
+![](pic/2.1.png)
+![](pic/2.2.png)
+
+Туториал 3:
+
+![](pic/3.png)
+![](pic/3.1.png)
+
+## Разработка демонстрационных приложений
+
+Предметная область: Доставка почты. Производитель - почтовая станция, которая сигнализирует о том, что пришла почта. Потребитель 1 - курьер тратит время и доставляет почту. Потребитель 2 - мы отправляет письмо по почте.
+
+1. Publisher
+
+```py
+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: "post", 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: "post",
+            routingKey: string.Empty,
+            basicProperties: null,
+            body: body);
+
+    Console.WriteLine($" [x] Письмо готово {message}");
+    await Task.Delay(500);
+}
+
+Console.WriteLine(" Нажми [enter] чтобы выйти.");
+Console.ReadLine();
+
+static string GetMessage(string[] args)
+{
+    return ((args.Length > 0) ? string.Join(" ", args) : "info: Привет Мир!");
+}
+```
+
+2. Consumer 1.
+
+```py
+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 = $"courier{rand.Next()}";
+
+channel.QueueDeclare(queue: queueName);
+channel.QueueBind(queue: queueName,
+    exchange: "post",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Ожидание сообщения.");
+
+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 = $"Курьер с письмом потратил {waitTime} минут и доставил письмо {message}";
+    Console.WriteLine($" [x] Сделано. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: queueName,
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Нажми [enter] чтобы выйти.");
+Console.ReadLine();
+
+```
+
+3. Consumer 2.
+
+```py
+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: "mail");
+channel.QueueBind(queue: "mail",
+    exchange: "post",
+    routingKey: string.Empty);
+
+Console.WriteLine(" [*] Ожидание сообщения.");
+
+var consumer = new EventingBasicConsumer(channel);
+consumer.Received += async (model, ea) =>
+{
+    byte[] body = ea.Body.ToArray();
+    var message = Encoding.UTF8.GetString(body);
+
+    string outputText = $"Письмо было отправлено почтой {message}";
+    Console.WriteLine($" [x] Сделано. {outputText}");
+    channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
+};
+channel.BasicConsume(queue: "mail",
+    autoAck: false,
+    consumer: consumer);
+
+Console.WriteLine(" Нажми [enter] чтобы выйти.");
+Console.ReadLine();
+```
+
+## Результаты выполнения лабораторной работы
+Вот работа наших 2 потребителей и производителя
+![](pic/4.1.png)
+Наш график, где нагляжно видно очереди и скорость прохода сообщений
+![](pic/4.png)
+Очередь с названием "courier..." - это наша очередь с курьером, а очередь "mail" - почтой
+![](pic/4.2.png)
+Вывод: Consumer2 - меньше нагружает память(из-за отсутствия простаивания очереди) и быстрее по времени, чем Consumer1(Реально, я вот щас пишу записку, а он до сих пор назначает курьеров😂)

tasks/kazakov-ev/lab_4/Tut1/Receive/Receive.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/kazakov-ev/lab_4/Tut1/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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/Tut1/Send/Send.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/kazakov-ev/lab_4/Tut1/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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/Tut2/NewTask/NewTask.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/kazakov-ev/lab_4/Tut2/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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/Tut2/Worker/Worker.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/kazakov-ev/lab_4/Tut2/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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/Tut3/EmitLogs/EmitLogs.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/kazakov-ev/lab_4/Tut3/EmitLogs/EmitLogs.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="6.7.0" />
+  </ItemGroup>
+
+</Project>

tasks/kazakov-ev/lab_4/Tut3/ReceiveLogs/ReceiveLogs.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/kazakov-ev/lab_4/Tut3/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="6.7.0" />
+  </ItemGroup>
+
+</Project>