[Л/Р 3] Михайлов Юрий #183

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v.moiseev merged 5 commits from YuriMikhailov/distributed-computing:mikhailov-ys-lab-3 into main 2024-01-09 20:19:50 +04:00
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<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
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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: "accepted");
channel.QueueBind(queue: "accepted",
exchange: "report",
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 = $"Заявление принято к обработке {message}";
Console.WriteLine($" [x] Done. {outputText}");
channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
};
channel.BasicConsume(queue: "accepted",
autoAck: false,
consumer: consumer);
Console.WriteLine(" Press [enter] to exit.");
Console.ReadLine();

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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();
Random rand = new Random();
string queueName = $"denied{rand.Next()}";
channel.QueueDeclare(queue: queueName);
channel.QueueBind(queue: queueName,
exchange: "report",
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 = $"Заявление обработано {message} за {waitTime} минут";
Console.WriteLine($" [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();

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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: "report", type: ExchangeType.Fanout);
Random rand = new Random();
foreach (var item in Enumerable.Range(0, 1000))
{
var message = rand.Next().ToString();
var body = Encoding.UTF8.GetBytes(message);
channel.BasicPublish(exchange: "report",
routingKey: string.Empty,
basicProperties: null,
body: body);
Console.WriteLine($" [x] Поступило заявление {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: Принято!");
}

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@ -1,15 +0,0 @@
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# Отчёт по лабораторной работе №4
Выполнил: студент гр. ИСЭбд-41 Михайлов Ю.С.
## Прохождение туториалов
Установил RabbitMQ, Erlang и зашел в брокер под гостем по адресу http://localhost:15672/#/
Туториал 1:
![](pic/1.PNG)
![](pic/2.PNG)
![](pic/3.PNG)
Туториал 2:
![](pic/4.PNG)
![](pic/5.PNG)
![](pic/6.PNG)
![](pic/7.PNG)
Туториал 3:
![](pic/8.PNG)
![](pic/9.PNG)
![](pic/10.PNG)
## Разработка демонстрационных приложений
Предметная область - оформление заявлений на стипендию в университете. Разработано три приложения согласно предметной области.
1. Publisher:
```
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: "report", type: ExchangeType.Fanout);
Random rand = new Random();
foreach (var item in Enumerable.Range(0, 1000))
{
var message = rand.Next().ToString();
var body = Encoding.UTF8.GetBytes(message);
channel.BasicPublish(exchange: "report",
routingKey: string.Empty,
basicProperties: null,
body: body);
Console.WriteLine($" [x] Поступило заявление {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: Принято!");
}
```
2. Consumer 1:
```
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: "accepted");
channel.QueueBind(queue: "accepted",
exchange: "report",
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 = $"Заявление принято к обработке {message}";
Console.WriteLine($" [x] Done. {outputText}");
channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
};
channel.BasicConsume(queue: "accepted",
autoAck: false,
consumer: consumer);
Console.WriteLine(" Press [enter] to exit.");
Console.ReadLine();
```
3. Consumer 3:
```
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();
Random rand = new Random();
string queueName = $"denied{rand.Next()}";
channel.QueueDeclare(queue: queueName);
channel.QueueBind(queue: queueName,
exchange: "report",
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 = $"Заявление обработано {message} за {waitTime} минут";
Console.WriteLine($" [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 работы
Запуск каждой программы:
![](pic/11.PNG)
![](pic/12.PNG)
![](pic/13.PNG)
Результаты обработки:
![](pic/14.PNG)
![](pic/15.PNG)
Вывод: Consumer_2 нагружает меньше памяти, чем Consumer_1 и принимает сообщения гораздо быстрее, тем самым не позволяя очереди накапливать огромное количество сообщений

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@ -1,29 +0,0 @@
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();

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@ -1,14 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
</ItemGroup>
</Project>

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@ -1,24 +0,0 @@
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();

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@ -1,14 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
</ItemGroup>
</Project>

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@ -1,32 +0,0 @@
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) : "Урок 2");
}

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@ -1,14 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
</ItemGroup>
</Project>

View File

@ -1,38 +0,0 @@
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");
channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
};
channel.BasicConsume(queue: "task_queue",
autoAck: false,
consumer: consumer);
Console.WriteLine(" Press [enter] to exit.");
Console.ReadLine();

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@ -1,14 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
</ItemGroup>
</Project>

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@ -1,24 +0,0 @@
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: третий туториал");
}

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@ -1,14 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<OutputType>Exe</OutputType>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="RabbitMQ.Client" Version="6.4.0" />
</ItemGroup>
</Project>

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@ -1,31 +0,0 @@
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();

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@ -1,14 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<OutputType>Exe</OutputType>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="RabbitMQ.Client" Version="6.4.0" />
</ItemGroup>
</Project>