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borschevskaya_anna_lab_4/README.md
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borschevskaya_anna_lab_4/README.md
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# Отчет. Лабораторная работа 4
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## Описание
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В ходе лабораторной работы были изучены главы туториала о работе с RabbitMQ. Результат выполнения заданий каждой главы
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отражен на скриншотах в папке /images:
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- Tutorial-Task1.png
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![Tutorial-Task1](images/Tutorial-Task1.png)
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- Tutorial-Task2.png
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![Tutorial-Task2](images/Tutorial-Task2.png)
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- Tutorial-Task3.png
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![Tutorial-Task3](images/Tutorial-Task3.png)
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Задание из 3-ей главы туториала было расширено условиями, которые были поставлены в задании к данной лабораторной работе.
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Для демонстрации работы сервисов посредством ассинхронного общения через брокер сообщений RabbitMQ была выбрана
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предметная область "Обработка заказов".
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Сервис-издатель "Publisher" публикует в очередь сообщений событие поступления заказа с некоторым номером.
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Сервисы-подписчики обрабатывают сообщения о заказах, при этом подписчики обрабатывают сообщение по-разному. Один вид
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подписчика обрабатывает с задержкой в несколько секунд, другой - "мгновенно", они получают одни и те жа сообщения,
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но соединены с разными очередями.
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В качестве эксперимента изначально были запущены по одному экземпляру каждого вида.
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На изображении Consumer2.png представлена работа мгновенно обрабатывающего подписчика. Он справляется с нагрузкой,
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так как размер очереди не растет.
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![Consumer 2](images/Consumer2.png)
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На изображении Consumer1.png представлена работа подписчика, обрабатывающего сообщения с задержкой. Как мы видим,
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в очереди накапливаются сообщения в состоянии 'Ready' - эти сообщения готовы для того, чтобы быть доставленными подписчикам.
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Сервис не справляется с нагрузкой, так как отправляются сообщения быстрее, чем обрабатываются.
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![Consumer 1](images/Consumer1.png)
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Для того, чтобы обеспечить равную скорость отправки и обработки, увеличиваем количество экземпляров-подписчиков данного типа до трех.
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На изображении видно, что теперь длина очереди не растет и система справляется с поступающими сообщениями. Также скорость "publish" и
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"consumer ack" стали равны.
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![Consumer 1](images/Consumer1-scaling.png)
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## Как запустить
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Для того, чтобы запустить сервисы, необходимо выполнить следующие действия:
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1. Установить и запустить Docker Engine или Docker Desktop
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2. Через консоль перейти в папку, в которой расположен файл docker-compose.yml
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3. Выполнить команду для запуска брокера сообщений rabbitmq:
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```
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docker compose up rabbit -d
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```
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4. Выполнить команду для запуска остальных контейнеров:
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```
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docker compose up -d
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```
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Такой порядок запуска важен для того, чтобы брокер сообщений успел полностью запуститься
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и произвести действия для того, чтобы быть готовым принимать соединения от сервисов. Потому что указания depends_on не хватает
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для отслеживания завершения всех необходимых подготовительных процессов брокера.
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## Видео-отчет
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Работоспособность лабораторной работы можно оценить в следующем [видео](https://disk.yandex.ru/i/G0vsfp7vwazYHw).
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borschevskaya_anna_lab_4/consumer-app/Dockerfile
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borschevskaya_anna_lab_4/consumer-app/Dockerfile
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# Используем образ Maven для сборки
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FROM maven:3.8-eclipse-temurin-21-alpine AS build
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# Устанавливаем рабочую директорию
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WORKDIR /app
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# Копируем остальные исходные файлы
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COPY pom.xml .
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COPY src src
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# Собираем весь проект
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RUN mvn clean package -DskipTests
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RUN mvn dependency:copy-dependencies
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# Используем официальный образ JDK для запуска собранного jar-файла
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FROM eclipse-temurin:21-jdk-alpine
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# Копируем jar-файл из предыдущего этапа
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COPY --from=build /app/target/*.jar /app.jar
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COPY --from=build /app/target/dependency /
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# Указываем команду для запуска приложения
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CMD ["java", "-jar", "app.jar"]
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borschevskaya_anna_lab_4/consumer-app/pom.xml
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borschevskaya_anna_lab_4/consumer-app/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>ru.somecompany</groupId>
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<artifactId>consumer-app</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>3.2.3</version>
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<relativePath/>
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</parent>
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<properties>
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<maven.compiler.source>21</maven.compiler.source>
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<maven.compiler.target>21</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>com.rabbitmq</groupId>
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<artifactId>amqp-client</artifactId>
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<version>5.22.0</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.18.30</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>
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package ru.somecompany;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.boot.context.properties.ConfigurationPropertiesScan;
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import ru.somecompany.config.property.RabbitProperties;
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@SpringBootApplication
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@ConfigurationPropertiesScan(basePackageClasses = RabbitProperties.class)
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public class Main {
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public static void main(String[] args) {
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SpringApplication.run(Main.class, args);
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}
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}
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package ru.somecompany.config;
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import com.rabbitmq.client.BuiltinExchangeType;
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import com.rabbitmq.client.Channel;
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import com.rabbitmq.client.Connection;
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import com.rabbitmq.client.ConnectionFactory;
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import lombok.RequiredArgsConstructor;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import ru.somecompany.config.property.RabbitProperties;
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import java.io.IOException;
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import java.util.concurrent.TimeoutException;
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@Configuration
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@RequiredArgsConstructor
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public class ConnectionFactoryConfig {
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private final RabbitProperties rabbitProperties;
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@Bean
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public ConnectionFactory connectionFactory() {
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ConnectionFactory factory = new ConnectionFactory();
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factory.setHost(rabbitProperties.getHost());
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factory.setPort(rabbitProperties.getPort());
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return factory;
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}
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@Bean
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public Connection connection(ConnectionFactory connectionFactory) throws IOException, TimeoutException {
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return connectionFactory.newConnection();
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}
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@Bean
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public Channel channel(Connection connection) throws IOException {
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var exchange = rabbitProperties.getExchange();
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var queue = rabbitProperties.getQueue();
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var channel = connection.createChannel();
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channel.exchangeDeclare(exchange, BuiltinExchangeType.FANOUT);
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channel.queueDeclare(queue, true, false, true, null);
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channel.queueBind(queue, exchange, "");
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return channel;
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}
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}
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package ru.somecompany.config.property;
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import lombok.Data;
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import org.springframework.boot.context.properties.ConfigurationProperties;
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@Data
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@ConfigurationProperties(prefix = "app.rabbit-properties")
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public class RabbitProperties {
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private String host;
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private Integer port;
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private Integer delay;
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private String queue;
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private String exchange;
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}
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package ru.somecompany.consumer;
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import com.rabbitmq.client.AMQP;
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import com.rabbitmq.client.Channel;
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import com.rabbitmq.client.Connection;
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import com.rabbitmq.client.DefaultConsumer;
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import com.rabbitmq.client.Envelope;
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import jakarta.annotation.PostConstruct;
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import jakarta.annotation.PreDestroy;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Component;
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import ru.somecompany.config.property.RabbitProperties;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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@Slf4j
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@Component
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@RequiredArgsConstructor
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public class Consumer {
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private final RabbitProperties rabbitProperties;
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private final Connection connection;
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private final Channel channel;
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@PostConstruct
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public void consume() {
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try {
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channel.basicQos(1);
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channel.basicConsume(rabbitProperties.getQueue(), false, new DefaultConsumer(channel) {
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@Override
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public void handleDelivery(String consumerTag,
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Envelope envelope,
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AMQP.BasicProperties properties,
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byte[] body) throws IOException {
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long deliveryTag = envelope.getDeliveryTag();
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String message = new String(body, StandardCharsets.UTF_8);
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System.out.println(" [x] Received '" + message + "'");
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var delay = rabbitProperties.getDelay();
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try {
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doWork(delay);
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} finally {
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System.out.println(" [x] Processed '" + message + "'");
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channel.basicAck(deliveryTag, false);
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}
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}
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});
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} catch (Exception exception) {
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log.error("Error while set up connection with rabbit", exception);
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}
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}
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private static void doWork(Integer delay) {
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if (delay > 0) {
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try {
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Thread.sleep(delay);
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} catch (InterruptedException _ignored) {
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Thread.currentThread().interrupt();
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}
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}
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}
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@PreDestroy
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public void cleanUp() throws Exception {
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if (channel != null) {
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channel.close();
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}
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if (connection != null) {
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connection.close();
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}
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}
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}
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server:
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port: ${SERVER_PORT:8081}
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app:
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rabbit-properties:
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host: ${RABBIT_HOST:localhost}
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port: ${RABBIT_PORT:5672}
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delay: ${PROCESS_DELAY:0}
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queue: ${QUEUE_NAME:queue-1}
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exchange: ${EXCHANGE_NAME:order-events}
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borschevskaya_anna_lab_4/docker-compose.yml
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79
borschevskaya_anna_lab_4/docker-compose.yml
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services:
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rabbit:
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container_name: rabbit
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image: rabbitmq:3-management
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ports:
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- "15672:15672"
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- "5672:5672"
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- "5671:5671"
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networks:
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- local
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publisher:
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build: ./publisher-app
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container_name: publisher
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depends_on:
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- rabbit
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environment:
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RABBIT_HOST: rabbit
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RABBIT_PORT: 5672
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networks:
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- local
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consumer-1:
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build: ./consumer-app
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container_name: consumer-1
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depends_on:
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- rabbit
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- publisher
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environment:
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RABBIT_HOST: rabbit
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RABBIT_PORT: 5672
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PROCESS_DELAY: 3000
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QUEUE_NAME: queue1
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EXCHANGE_NAME: order-events
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networks:
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- local
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consumer-2:
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build: ./consumer-app
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container_name: consumer-2
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depends_on:
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- rabbit
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- publisher
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environment:
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RABBIT_HOST: rabbit
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RABBIT_PORT: 5672
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PROCESS_DELAY: 0
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QUEUE_NAME: queue2
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EXCHANGE_NAME: order-events
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networks:
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- local
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consumer-12:
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build: ./consumer-app
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container_name: consumer-12
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depends_on:
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- rabbit
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- publisher
|
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environment:
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RABBIT_HOST: rabbit
|
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RABBIT_PORT: 5672
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PROCESS_DELAY: 3000
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QUEUE_NAME: queue1
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EXCHANGE_NAME: order-events
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networks:
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- local
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consumer-13:
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build: ./consumer-app
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container_name: consumer-13
|
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depends_on:
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- rabbit
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- publisher
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environment:
|
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RABBIT_HOST: rabbit
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RABBIT_PORT: 5672
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PROCESS_DELAY: 3000
|
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QUEUE_NAME: queue1
|
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EXCHANGE_NAME: order-events
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networks:
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- local
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networks:
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local:
|
34
borschevskaya_anna_lab_4/helloworld-tutorial/pom.xml
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34
borschevskaya_anna_lab_4/helloworld-tutorial/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<groupId>ru.somecompany</groupId>
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||||
<artifactId>helloworld-tutorial</artifactId>
|
||||
<version>1.0-SNAPSHOT</version>
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||||
|
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<properties>
|
||||
<maven.compiler.source>21</maven.compiler.source>
|
||||
<maven.compiler.target>21</maven.compiler.target>
|
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
</properties>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>com.rabbitmq</groupId>
|
||||
<artifactId>amqp-client</artifactId>
|
||||
<version>5.22.0</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.slf4j</groupId>
|
||||
<artifactId>slf4j-api</artifactId>
|
||||
<version>1.7.5</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.slf4j</groupId>
|
||||
<artifactId>slf4j-log4j12</artifactId>
|
||||
<version>1.7.5</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
</project>
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|
||||
package ru.somecompany;
|
||||
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.Connection;
|
||||
import com.rabbitmq.client.ConnectionFactory;
|
||||
import com.rabbitmq.client.DeliverCallback;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
|
||||
public class Main {
|
||||
|
||||
private static final String QUEUE_NAME = "hello-world";
|
||||
|
||||
public static void main(String[] args) {
|
||||
ConnectionFactory factory = new ConnectionFactory();
|
||||
factory.setHost("localhost");
|
||||
try(Connection connection = factory.newConnection();
|
||||
Channel channel = connection.createChannel();) {
|
||||
var sender = new Sender(channel);
|
||||
var receiver = new Receiver(channel);
|
||||
|
||||
} catch (Exception e) {
|
||||
System.out.println(" [*] Error in Hello-World");
|
||||
}
|
||||
}
|
||||
}
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@ -0,0 +1,20 @@
|
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package ru.somecompany;
|
||||
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.DeliverCallback;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
public class Receiver {
|
||||
|
||||
private static final String QUEUE_NAME = "hello-world";
|
||||
|
||||
public Receiver(Channel channel) throws IOException {
|
||||
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
|
||||
DeliverCallback deliverCallback = (consumerTag, delivery) -> {
|
||||
String message = new String(delivery.getBody(), "UTF-8");
|
||||
System.out.println(" [x] Received '" + message + "'");
|
||||
};
|
||||
channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> { });
|
||||
}
|
||||
}
|
@ -0,0 +1,18 @@
|
||||
package ru.somecompany;
|
||||
|
||||
import com.rabbitmq.client.Channel;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
|
||||
public class Sender {
|
||||
|
||||
private static final String QUEUE_NAME = "hello-world";
|
||||
|
||||
public Sender(Channel channel) throws IOException {
|
||||
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
|
||||
String message = "Hello World!";
|
||||
channel.basicPublish("", QUEUE_NAME, null, message.getBytes(StandardCharsets.UTF_8));
|
||||
System.out.println(" [x] Sent '" + message + "'");
|
||||
}
|
||||
}
|
@ -0,0 +1,8 @@
|
||||
# Root logger option
|
||||
log4j.rootLogger=INFO, stdout
|
||||
|
||||
# Direct log messages to stdout
|
||||
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
|
||||
log4j.appender.stdout.Target=System.out
|
||||
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
|
||||
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
|
BIN
borschevskaya_anna_lab_4/images/Consumer1-scaling.PNG
Normal file
BIN
borschevskaya_anna_lab_4/images/Consumer1-scaling.PNG
Normal file
Binary file not shown.
After Width: | Height: | Size: 31 KiB |
BIN
borschevskaya_anna_lab_4/images/Consumer1.PNG
Normal file
BIN
borschevskaya_anna_lab_4/images/Consumer1.PNG
Normal file
Binary file not shown.
After Width: | Height: | Size: 39 KiB |
BIN
borschevskaya_anna_lab_4/images/Consumer2.PNG
Normal file
BIN
borschevskaya_anna_lab_4/images/Consumer2.PNG
Normal file
Binary file not shown.
After Width: | Height: | Size: 28 KiB |
BIN
borschevskaya_anna_lab_4/images/Tutorial-Task1.PNG
Normal file
BIN
borschevskaya_anna_lab_4/images/Tutorial-Task1.PNG
Normal file
Binary file not shown.
After Width: | Height: | Size: 101 KiB |
BIN
borschevskaya_anna_lab_4/images/Tutorial-Task2.PNG
Normal file
BIN
borschevskaya_anna_lab_4/images/Tutorial-Task2.PNG
Normal file
Binary file not shown.
After Width: | Height: | Size: 128 KiB |
BIN
borschevskaya_anna_lab_4/images/Tutorial-Task3.PNG
Normal file
BIN
borschevskaya_anna_lab_4/images/Tutorial-Task3.PNG
Normal file
Binary file not shown.
After Width: | Height: | Size: 848 KiB |
38
borschevskaya_anna_lab_4/publisher-app/.gitignore
vendored
Normal file
38
borschevskaya_anna_lab_4/publisher-app/.gitignore
vendored
Normal file
@ -0,0 +1,38 @@
|
||||
target/
|
||||
!.mvn/wrapper/maven-wrapper.jar
|
||||
!**/src/main/**/target/
|
||||
!**/src/test/**/target/
|
||||
|
||||
### IntelliJ IDEA ###
|
||||
.idea/modules.xml
|
||||
.idea/jarRepositories.xml
|
||||
.idea/compiler.xml
|
||||
.idea/libraries/
|
||||
*.iws
|
||||
*.iml
|
||||
*.ipr
|
||||
|
||||
### Eclipse ###
|
||||
.apt_generated
|
||||
.classpath
|
||||
.factorypath
|
||||
.project
|
||||
.settings
|
||||
.springBeans
|
||||
.sts4-cache
|
||||
|
||||
### NetBeans ###
|
||||
/nbproject/private/
|
||||
/nbbuild/
|
||||
/dist/
|
||||
/nbdist/
|
||||
/.nb-gradle/
|
||||
build/
|
||||
!**/src/main/**/build/
|
||||
!**/src/test/**/build/
|
||||
|
||||
### VS Code ###
|
||||
.vscode/
|
||||
|
||||
### Mac OS ###
|
||||
.DS_Store
|
21
borschevskaya_anna_lab_4/publisher-app/Dockerfile
Normal file
21
borschevskaya_anna_lab_4/publisher-app/Dockerfile
Normal file
@ -0,0 +1,21 @@
|
||||
# Используем образ Maven для сборки
|
||||
FROM maven:3.8-eclipse-temurin-21-alpine AS build
|
||||
|
||||
# Устанавливаем рабочую директорию
|
||||
WORKDIR /app
|
||||
|
||||
# Копируем остальные исходные файлы
|
||||
COPY pom.xml .
|
||||
COPY src src
|
||||
|
||||
# Собираем весь проект
|
||||
RUN mvn clean package -DskipTests
|
||||
|
||||
# Используем официальный образ JDK для запуска собранного jar-файла
|
||||
FROM eclipse-temurin:21-jdk-alpine
|
||||
|
||||
# Копируем jar-файл из предыдущего этапа
|
||||
COPY --from=build /app/target/*.jar /app.jar
|
||||
|
||||
# Указываем команду для запуска приложения
|
||||
CMD ["java", "-jar", "app.jar"]
|
49
borschevskaya_anna_lab_4/publisher-app/pom.xml
Normal file
49
borschevskaya_anna_lab_4/publisher-app/pom.xml
Normal file
@ -0,0 +1,49 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<groupId>ru.somecompany</groupId>
|
||||
<artifactId>publisher-app</artifactId>
|
||||
<version>1.0-SNAPSHOT</version>
|
||||
|
||||
<parent>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-parent</artifactId>
|
||||
<version>3.2.3</version>
|
||||
<relativePath/>
|
||||
</parent>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source>21</maven.compiler.source>
|
||||
<maven.compiler.target>21</maven.compiler.target>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
</properties>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-web</artifactId>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.projectlombok</groupId>
|
||||
<artifactId>lombok</artifactId>
|
||||
<version>1.18.30</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>com.rabbitmq</groupId>
|
||||
<artifactId>amqp-client</artifactId>
|
||||
<version>5.22.0</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-maven-plugin</artifactId>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
</project>
|
@ -0,0 +1,17 @@
|
||||
package ru.somecompany;
|
||||
|
||||
import org.springframework.boot.SpringApplication;
|
||||
import org.springframework.boot.autoconfigure.SpringBootApplication;
|
||||
import org.springframework.boot.context.properties.ConfigurationPropertiesScan;
|
||||
import org.springframework.scheduling.annotation.EnableScheduling;
|
||||
import ru.somecompany.config.property.RabbitProperties;
|
||||
|
||||
@EnableScheduling
|
||||
@SpringBootApplication
|
||||
@ConfigurationPropertiesScan(basePackageClasses = RabbitProperties.class)
|
||||
public class Main {
|
||||
|
||||
public static void main(String[] args) {
|
||||
SpringApplication.run(Main.class, args);
|
||||
}
|
||||
}
|
@ -0,0 +1,40 @@
|
||||
package ru.somecompany.config;
|
||||
|
||||
import com.rabbitmq.client.BuiltinExchangeType;
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.Connection;
|
||||
import com.rabbitmq.client.ConnectionFactory;
|
||||
import lombok.RequiredArgsConstructor;
|
||||
import org.springframework.context.annotation.Bean;
|
||||
import org.springframework.context.annotation.Configuration;
|
||||
import ru.somecompany.config.property.RabbitProperties;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
|
||||
@Configuration
|
||||
@RequiredArgsConstructor
|
||||
public class ConnectionFactoryConfig {
|
||||
|
||||
private final RabbitProperties rabbitProperties;
|
||||
|
||||
@Bean
|
||||
public ConnectionFactory connectionFactory() {
|
||||
ConnectionFactory factory = new ConnectionFactory();
|
||||
factory.setHost(rabbitProperties.getHost());
|
||||
factory.setPort(rabbitProperties.getPort());
|
||||
return factory;
|
||||
}
|
||||
|
||||
@Bean
|
||||
public Connection connection(ConnectionFactory connectionFactory) throws IOException, TimeoutException {
|
||||
return connectionFactory.newConnection();
|
||||
}
|
||||
|
||||
@Bean
|
||||
public Channel channel(Connection connection) throws IOException {
|
||||
var channel = connection.createChannel();
|
||||
channel.exchangeDeclare(rabbitProperties.getExchange(), BuiltinExchangeType.FANOUT);
|
||||
return channel;
|
||||
}
|
||||
}
|
@ -0,0 +1,15 @@
|
||||
package ru.somecompany.config.property;
|
||||
|
||||
import lombok.Data;
|
||||
import org.springframework.boot.context.properties.ConfigurationProperties;
|
||||
|
||||
@Data
|
||||
@ConfigurationProperties(prefix = "app.rabbit-properties")
|
||||
public class RabbitProperties {
|
||||
|
||||
private String host;
|
||||
|
||||
private Integer port;
|
||||
|
||||
private String exchange;
|
||||
}
|
@ -0,0 +1,41 @@
|
||||
package ru.somecompany.scheduler;
|
||||
|
||||
import com.rabbitmq.client.BuiltinExchangeType;
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.Connection;
|
||||
import com.rabbitmq.client.ConnectionFactory;
|
||||
import lombok.RequiredArgsConstructor;
|
||||
import org.springframework.scheduling.annotation.Scheduled;
|
||||
import org.springframework.stereotype.Service;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
|
||||
@Service
|
||||
@RequiredArgsConstructor
|
||||
public class SenderScheduler {
|
||||
|
||||
private static final String EXCHANGE_NAME = "order-events";
|
||||
private static final String MESSAGE = "Поступил заказ №%d";
|
||||
private Integer index = 0;
|
||||
|
||||
private final ConnectionFactory connectionFactory;
|
||||
private final Connection connection;
|
||||
private final Channel channel;
|
||||
|
||||
@Scheduled(cron = "*/1 * * * * *")
|
||||
public void sendMessage() {
|
||||
try {
|
||||
var message = String.format(MESSAGE, index);
|
||||
|
||||
channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes(StandardCharsets.UTF_8));
|
||||
index++;
|
||||
System.out.println(" [x] Sent '" + message + "'");
|
||||
} catch (IOException e) {
|
||||
System.out.println(" [x] Error while send message");
|
||||
throw new RuntimeException(e);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
@ -0,0 +1,8 @@
|
||||
server:
|
||||
port: ${SERVER_PORT:8080}
|
||||
|
||||
app:
|
||||
rabbit-properties:
|
||||
host: ${RABBIT_HOST:localhost}
|
||||
port: ${RABBIT_PORT:5672}
|
||||
exchange: ${EXCHANGE_NAME:order-events}
|
30
borschevskaya_anna_lab_4/workqueue-tutorial/pom.xml
Normal file
30
borschevskaya_anna_lab_4/workqueue-tutorial/pom.xml
Normal file
@ -0,0 +1,30 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<groupId>ru.somecompany</groupId>
|
||||
<artifactId>workqueue-tutorial</artifactId>
|
||||
<version>1.0-SNAPSHOT</version>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source>21</maven.compiler.source>
|
||||
<maven.compiler.target>21</maven.compiler.target>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
</properties>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>com.rabbitmq</groupId>
|
||||
<artifactId>amqp-client</artifactId>
|
||||
<version>5.22.0</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.slf4j</groupId>
|
||||
<artifactId>slf4j-log4j12</artifactId>
|
||||
<version>1.7.5</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
</project>
|
@ -0,0 +1,23 @@
|
||||
package ru.somecompany;
|
||||
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.Connection;
|
||||
import com.rabbitmq.client.ConnectionFactory;
|
||||
|
||||
public class Main {
|
||||
|
||||
public static final String QUEUE_NAME = "task_queue";
|
||||
|
||||
public static void main(String[] args) {
|
||||
ConnectionFactory factory = new ConnectionFactory();
|
||||
factory.setHost("localhost");
|
||||
try(Connection connection = factory.newConnection();
|
||||
Channel channel = connection.createChannel();) {
|
||||
var sender = new Sender(channel);
|
||||
sender.send("Work Queue message");
|
||||
var receiver = new Receiver(channel);
|
||||
} catch (Exception e) {
|
||||
System.out.println(" [*] Error in Work-Queue: " + e.getMessage());
|
||||
}
|
||||
}
|
||||
}
|
@ -0,0 +1,44 @@
|
||||
package ru.somecompany;
|
||||
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.DeliverCallback;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
|
||||
import static ru.somecompany.Main.QUEUE_NAME;
|
||||
|
||||
public class Receiver {
|
||||
|
||||
public Receiver(Channel channel) throws IOException {
|
||||
channel.queueDeclare(QUEUE_NAME, true, false, false, null);
|
||||
System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
|
||||
|
||||
channel.basicQos(1);
|
||||
|
||||
DeliverCallback deliverCallback = (consumerTag, delivery) -> {
|
||||
String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
|
||||
|
||||
System.out.println(" [x] Received '" + message + "'");
|
||||
try {
|
||||
doWork(message);
|
||||
} finally {
|
||||
System.out.println(" [x] Done");
|
||||
channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
|
||||
}
|
||||
};
|
||||
channel.basicConsume(QUEUE_NAME, false, deliverCallback, consumerTag -> { });
|
||||
}
|
||||
|
||||
private static void doWork(String task) {
|
||||
for (char ch : task.toCharArray()) {
|
||||
if (ch == '.') {
|
||||
try {
|
||||
Thread.sleep(1000);
|
||||
} catch (InterruptedException _ignored) {
|
||||
Thread.currentThread().interrupt();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
@ -0,0 +1,29 @@
|
||||
package ru.somecompany;
|
||||
|
||||
import com.rabbitmq.client.Channel;
|
||||
import com.rabbitmq.client.MessageProperties;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.UnsupportedEncodingException;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
|
||||
import static ru.somecompany.Main.QUEUE_NAME;
|
||||
|
||||
public class Sender {
|
||||
|
||||
private Channel channel;
|
||||
|
||||
public Sender(Channel channel) throws IOException {
|
||||
channel.queueDeclare(QUEUE_NAME, true, false, false, null);
|
||||
this.channel = channel;
|
||||
}
|
||||
|
||||
public void send(String msg) throws IOException {
|
||||
String message = String.join(" ", msg);
|
||||
|
||||
channel.basicPublish("", QUEUE_NAME,
|
||||
MessageProperties.PERSISTENT_TEXT_PLAIN,
|
||||
message.getBytes("UTF-8"));
|
||||
System.out.println(" [x] Sent '" + message + "'");
|
||||
}
|
||||
}
|
@ -0,0 +1,8 @@
|
||||
# Root logger option
|
||||
log4j.rootLogger=INFO, stdout
|
||||
|
||||
# Direct log messages to stdout
|
||||
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
|
||||
log4j.appender.stdout.Target=System.out
|
||||
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
|
||||
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
|
Loading…
Reference in New Issue
Block a user