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16 Commits

Author SHA1 Message Date
60ef5724cd Merge pull request 'sergeev_evgenii_lab_2 is done!' (#128) from sergeev_evgenii_lab_2 into main
Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/128
2024-01-18 16:04:59 +04:00
6827a64c4d Merge pull request 'kutygin_andrey_lab_3_ready' (#120) from kutygin_andrey_lab_3 into main
Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/120
2024-01-18 16:03:23 +04:00
7de577eadc Merge pull request 'podkorytova_yulia_lab_4 is ready' (#134) from podkorytova_yulia_lab_4 into main
Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/134
2024-01-17 17:07:53 +04:00
2690438508 Merge pull request 'romanova_adelina_lab_4_ready' (#129) from romanova_adelina_lab_4 into main
Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/129
2024-01-17 13:12:17 +04:00
e3677ed302 Merge pull request 'kutygin_andrey_lab_2_ready' (#121) from kutygin_andrey_lab_2 into main
Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/121
2024-01-17 11:50:07 +04:00
yulia
f5bc94c4ec podkorytova_yulia_lab_4 is ready 2024-01-17 04:12:23 +04:00
f4ec46b14d romanova_adelina_lab_4_ready 2024-01-16 17:30:43 +04:00
ac085099f4 Merge pull request 'kutygin_lab_1_ready' (#122) from kutygin_andrey_lab_1 into main
Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/122
2024-01-16 17:29:29 +04:00
sergeevevgen
46f2a8da94 + 2024-01-16 17:12:52 +04:00
Евгений Сергеев
84bd5277a9 done! 2024-01-16 16:57:20 +04:00
Евгений Сергеев
bb78e6823b done! 2024-01-16 16:05:42 +04:00
sergeevevgen
ea990fd848 + 2024-01-16 14:52:17 +04:00
a284e473a9 kutygin_andrey_lab_3_ready 2024-01-16 12:10:49 +04:00
c7ccb94de9 kutygin_andrey_lab_2_ready 2024-01-16 12:09:03 +04:00
0a6ce933c7 kutygin_lab_1_ready 2024-01-16 11:35:19 +04:00
Евгений Сергеев
36c429cb4f init 2024-01-13 19:17:58 +04:00
123 changed files with 2256 additions and 116 deletions

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**Задание**
***
Развернуть не менее 3х сервисов через docker-compose.
**Выполнение**
***
Было выбрано три сервиса: RabbitMQ, MediaWiki, WordPress.
Описание сервисов:
- "rabbitmq": использует образ rabbitmq:3.12.8-management и открывает порты 5672 и 15672 для доступа к RabbitMQ и его управляющему интерфейсу.
- "mediawiki": использует образ mediawiki и открывает порт 8082 для доступа к серверу Mediawiki.
- "wordpress": использует образ wordpress и открывает порт 8083 для доступа к серверу Wordpress.
Описание томов:
- "rabbitmq-data": том для хранения данных RabbitMQ.
- "mediawiki-data": том для хранения данных Mediawiki.
- "wordpress-data": том для хранения данных Wordpress.
**Результаты:**
***
![mediawiki.png](screenshots/mediawiki.png)
![rabbitmq.png](screenshots/rabbitmq.png)
![wordpress.png](screenshots/wordpress.png)
**Видео:**
[![Видео по лабораторной](https://avatars.mds.yandex.net/i?id=39a897a792179979ea684bfffbe0ca3ce053731c-10928048-images-thumbs&n=13)](https://disk.yandex.ru/i/-9wvRKd04dLa8w)
Нужно кликнуть на jpg, чтобы открылось

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services:
rabbitmq:
image: rabbitmq:3.12.8-management
ports:
- 5672:5672
- 15672:15672
volumes:
- rabbitmq-data:/var/lib/rabbitmq
mediawiki:
image: mediawiki
ports:
- 8082:80
volumes:
- mediawiki-data:/var/files/mediawiki
wordpress:
image: wordpress
ports:
- 8083:80
volumes:
- wordpress-data:/var/files/wordpress
volumes:
rabbitmq-data:
mediawiki-data:
wordpress-data:

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kutygin_andrey_lab_2/.idea/.gitignore vendored Normal file
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# Default ignored files
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**Задание**
***
Цель: изучение техники создания простого распределённого приложения.
**Задачи**
***
Согласно варианту (0 и 1) разработать два приложения такие, что результат первого является исходными данными для второго.
Изучить файлы сборки образов docker и разработать их для созданных приложений.
Собрать файл docker-compose.yml для запуска приложений. Разобраться с монтированием каталогов из хост-системы.
Правильно закоммитить результат без лишних файлов.
Оформить pull request по правилам и отправить его на проверку.
**Ход работы**
***
**Разворачивание сервисов:**
***
Были разработаны два приложения на java:
worker-1 - Формирует файл /var/result/data.txt из файла, где было найдено самое большое число /var/data.
worker-2 - Ищет набольшее число из файла /var/result/data.txt и сохраняет его вторую степень в /var/result/result.txt.
**Исходные файлы**
Исходные файлы содержат целые числа.
В /var/result/data.txt проверяются числа из каждого файла и выбирается самое большое
**Firsttxt.txt:**
1
2
3
4
5
**Secondtxt.txt**
1
2
3
**Thirdtxt.txt**
1
2
3
4
5
6
7
8
9
10
В /var/result/result.txt записывается число 100 - квадрат наибольшего числа - 10
**Dockerfile**
Для данной работы были созданы идентичные докер-файлы в обоих проектах.
````
FROM openjdk:17
RUN mkdir /var/data
RUN mkdir /var/result
WORKDIR /app
COPY src /app/src
RUN javac /app/src/Main.java
CMD ["java", "-cp", "/app/src", "Main"]
````
FROM - выбор базового образа
RUN - создание директории внутри контейнера
WORKDIR - установка рабочей директории для последующих команд
COPY - копирование содержимого директории внутрь контейнера
RUN - компиляция исходного кода Main.java внутри контейнера
CMD - определение команды, которая выполняется при запуске контейнера. В данном случае происходит запуск программы на java и указывается пусть до Main.java
**docker-compose.yml**
````
version: "3" #формат конфигурации Docker Compose версии 3
services: #определение сервисов
worker1:
build:
context: /worker-1 #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
volumes:
- .\var\data:/var/data #том для папки файлов
- .\var\result:/var/result #том для папки результатов
worker2:
- depends_on: #зависимость: worker2 не будет запущен, пока worker1 не завершит свой запуск
worker1
build:
context: /worker-2 #путь к контексту сборки
- dockerfile: Dockerfile #имя докерфайла
- volumes:
- .\var\result:/var/data #том для папки файлов
- .\var\result:/var/result #том для папки результатов
````
Видео: https://disk.yandex.ru/d/jpeOKQ_PAO0c0Q

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version: "3" #формат конфигурации Docker Compose версии 3
services: #определение сервисов
worker1:
build:
context: /worker_1 #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
volumes:
- .\var\data:/var/data #том для папки файлов
- .\var\result:/var/result #том для папки результатов
worker2:
depends_on: #зависимость: worker2 не будет запущен, пока worker1 не завершит свой запуск
- worker1
build:
context: /worker_2 #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
volumes:
- .\var\result:/var/data #том для папки файлов
- .\var\result:/var/result #том для папки результатов

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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

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1
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5

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1
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3

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1
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100.0

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FROM openjdk:17
RUN mkdir /var/data
RUN mkdir /var/result
WORKDIR /app
COPY src /app/src
RUN javac /app/src/Main.java
CMD ["java", "-cp", "/app/src", "Main"]

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import java.io.*;
import java.nio.file.*;
//Ищет в каталоге /var/data самый большой по объёму файл и перекладывает его в /var/result/data.txt.
public class Main {
private static Path findLargestFile(DirectoryStream<Path> stream) throws IOException {
long maxSize = 0;
Path largestFile = null;
for (Path file : stream) {
long size = Files.size(file);
if (size > maxSize) {
maxSize = size;
largestFile = file;
}
}
return largestFile;
}
public static void main(String[] args) {
Path dataDir = Path.of("/var/data");
Path resultDir = Path.of("/var/result");
try (DirectoryStream<Path> stream = Files.newDirectoryStream(dataDir)) {
Path largestFile = findLargestFile(stream);
if (largestFile != null) {
Files.createFile(resultDir.resolve("data.txt"));
Files.copy(largestFile, resultDir.resolve("data.txt"), StandardCopyOption.REPLACE_EXISTING);
System.out.println(largestFile.getFileName() + " перемещён");
} else {
System.out.println("Файл не найден");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}

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FROM openjdk:17
RUN mkdir /var/data
RUN mkdir /var/result
WORKDIR /app
COPY src /app/src
RUN javac /app/src/Main.java
CMD ["java", "-cp", "/app/src", "Main"]

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import java.io.*;
import java.nio.file.*;
import java.util.*;
//Ищет набольшее число из файла /var/data/data.txt и сохраняет его вторую степень в /var/result/result.txt.
public class Main {
public static void main(String[] args) {
Path dataFile = Path.of("/var/result/data.txt");
Path resultFile = Path.of("/var/result/result.txt");
try {
if (!Files.exists(dataFile)) {
System.out.println("Файл data.txt не существует");
return;
}
List<Integer> numbers = readNumbersFromFile(dataFile);
int maxNumber = findMaxNumber(numbers);
try (BufferedWriter writer = Files.newBufferedWriter(resultFile)) {
writer.write(String.valueOf(Math.pow(maxNumber,2)));
}
System.out.println("квадрат наибольшего числа " + Math.pow(maxNumber,2));
} catch (IOException e) {
e.printStackTrace();
}
}
private static List<Integer> readNumbersFromFile(Path dataFile) throws IOException {
List<Integer> numbers = new ArrayList<>();
try (BufferedReader reader = Files.newBufferedReader(dataFile)) {
String line;
while ((line = reader.readLine()) != null) {
numbers.add(Integer.parseInt(line));
}
}
return numbers;
}
private static int findMaxNumber(List<Integer> numbers) {
int maxNumber = Integer.MIN_VALUE;
for (int number : numbers) {
if (number > maxNumber) {
maxNumber = number;
}
}
return maxNumber;
}
}

3
kutygin_andrey_lab_3/.idea/.gitignore vendored Normal file
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# Default ignored files
/shelf/
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## Задание
Цель: изучение шаблона проектирования gateway, построения синхронного обмена между микросервисами и архитектурного стиля RESTful API.
Задачи:
- Создать 2 микросервиса, реализующих CRUD на связанных сущностях.
- Реализовать механизм синхронного обмена сообщениями между микросервисами.
- Реализовать шлюз на основе прозрачного прокси-сервера nginx.
## Ход работы
### Разворачивание сервисов:
Были разработаны два приложения на Java с использованием средства автоматизации сборки проектов Gradle и с использованием библиотеки spring-boot:
- categoryService - работа с дисциплинами (crud)
- productService - работа с продуктами (crud). При создании продукта выбирается id категории, и через nginx и rest template происходит получение данных о категории с этим id
### Обмен сообщениями
При создании плана обучения выбирается id категории, и через nginx и rest template происходит получение данных о категории с этим id
### Dockerfile
Идентичные докерфайлы для приложений:
```
FROM openjdk:17
RUN mkdir -p /usr/src/app/
WORKDIR /usr/src/app/
COPY . /usr/src/app/
RUN ./gradlew clean build
EXPOSE 8089
ENTRYPOINT ["java","-jar","build/libs/lab3-0.0.1-SNAPSHOT.jar"]
```
### docker-compose.yml
Файл, соединяющий сервисы (содержащий настройку Docker):
```
version: "3" #формат конфигурации Docker Compose версии 3
services: #определение сервисов
category:
build:
context: /categoryService #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
ports:
- "8089:8089" #проброс портов
networks:
- netwrk #сеть
product:
build:
context: /productService #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
ports:
- "8090:8090" #проброс портов
networks:
- netwrk #сеть
nginx:
image: nginx:latest #образ для контейнера
ports:
- "8091:80" #проброс портов
networks:
- netwrk #сеть
volumes:
- ./nginx.conf:/etc/nginx/nginx.conf #монтирует локальный файл конфигурации
depends_on: #зависимость от сервисов
- category
- product
networks:
netwrk:
driver: bridge #изолированная сеть
```
### nginx.conf
Настройка nginx:
```
http {
server {
listen 80;
listen [::]:80;
server_name localhost;
location /categoryService/ {
proxy_pass http://category:8089/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Prefix /categoryService;
}
location /productService/ {
proxy_pass http://product:8090/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Prefix /productService;
}
}
}
events {
worker_connections 1024;
}
```
## Результат
Видео: https://disk.yandex.ru/d/8Lcvb0H9LPNSKw

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@ -0,0 +1,7 @@
FROM openjdk:17
RUN mkdir -p /usr/src/app/
WORKDIR /usr/src/app/
COPY . /usr/src/app/
RUN ./gradlew clean build
EXPOSE 8089
ENTRYPOINT ["java","-jar","build/libs/lab3-0.0.1-SNAPSHOT.jar"]

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@ -0,0 +1,34 @@
plugins {
id 'org.springframework.boot' version '2.6.3'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'categoryApp'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '17'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
implementation 'com.h2database:h2:2.1.210'
implementation 'org.hibernate.validator:hibernate-validator'
implementation 'org.springdoc:springdoc-openapi-ui:1.6.5'
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'
implementation group: 'org.springdoc', name: 'springdoc-openapi-ui', version: '1.6.5'
}
tasks.named('test') {
useJUnitPlatform()
}

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@ -1,4 +1,4 @@
#Thu Jan 11 14:32:39 GMT+04:00 2024
#Wed Jan 10 18:16:23 GMT+04:00 2024
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip

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@ -0,0 +1,2 @@
rootProject.name = "lab3"

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@ -0,0 +1,12 @@
package categoryApp;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

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@ -0,0 +1,48 @@
package categoryApp.controller;
import categoryApp.model.CategoryDto;
import org.springframework.web.bind.annotation.*;
import categoryApp.service.*;
import javax.validation.Valid;
import java.util.List;
import java.util.stream.Collectors;
@RestController
@RequestMapping("/")
public class CategoryController {
private final CategoryService categoryService;
public CategoryController(CategoryService categoryService) {
this.categoryService = categoryService;
}
@GetMapping("/{id}")
public CategoryDto getCategory(@PathVariable Long id) {
return new CategoryDto(categoryService.findCategory(id));
}
@GetMapping("/")
public List<CategoryDto> getCategorys() {
return categoryService.findAllCategorys().stream()
.map(CategoryDto::new)
.collect(Collectors.toList());
}
@PostMapping("/")
public CategoryDto createCategory(@RequestBody @Valid CategoryDto categoryDto) {
return new CategoryDto(categoryService.addCategory(categoryDto));
}
@PutMapping("/{id}")
public CategoryDto updateCategory(@RequestBody @Valid CategoryDto categoryDto) {
return new CategoryDto(categoryService.updateCategory(categoryDto));
}
@DeleteMapping("/{id}")
public CategoryDto deleteCategory(@PathVariable Long id) {
return new CategoryDto(categoryService.deleteCategory(id));
}
}

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@ -0,0 +1,53 @@
package categoryApp.model;
import javax.persistence.*;
@Entity
public class Category {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String name;
private String description;
public Category() {
}
public Category(String name, String description) {
this.name = name;
this.description = description;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
@Override
public String toString() {
return "Category {" +
"id =" + id +
", name ='" + name + '\'' +
", desc ='" + description + '\'' +
'}';
}
}

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@ -0,0 +1,40 @@
package categoryApp.model;
public class CategoryDto {
private Long id;
private String name;
private String description;
public CategoryDto() {
}
public CategoryDto(Category category) {
this.id = category.getId();
this.name = String.format("%s", category.getName());
this.description = category.getDescription();
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}

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@ -0,0 +1,7 @@
package categoryApp.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import categoryApp.model.Category;
public interface CategoryRepository extends JpaRepository<Category, Long> {
}

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@ -0,0 +1,7 @@
package categoryApp.service;
public class CategoryNotFoundException extends RuntimeException{
public CategoryNotFoundException(Long id) {
super(String.format("Category with id [%s] is not found", id));
}
}

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@ -0,0 +1,49 @@
package categoryApp.service;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import categoryApp.model.*;
import categoryApp.repository.*;
import java.util.*;
@Service
public class CategoryService {
private final CategoryRepository categoryRepository;
public CategoryService(CategoryRepository categoryRepository) {
this.categoryRepository = categoryRepository;
}
@Transactional
public Category addCategory(CategoryDto categoryDto) {
final Category category = new Category(categoryDto.getName(), categoryDto.getDescription());
return categoryRepository.save(category);
}
@Transactional(readOnly = true)
public Category findCategory(Long id) {
final Optional<Category> category = categoryRepository.findById(id);
return category.orElseThrow(() -> new CategoryNotFoundException(id));
}
@Transactional(readOnly = true)
public List<Category> findAllCategorys() {
return categoryRepository.findAll();
}
@Transactional
public Category updateCategory(CategoryDto categoryDto) {
final Category currentCategory = findCategory(categoryDto.getId());
currentCategory.setName(categoryDto.getName());
currentCategory.setDescription(categoryDto.getDescription());
return categoryRepository.save(currentCategory);
}
@Transactional
public Category deleteCategory(Long id) {
final Category currentCategory = findCategory(id);
categoryRepository.delete(currentCategory);
return currentCategory;
}
}

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@ -0,0 +1,11 @@
spring.main.banner-mode=off
spring.datasource.url=jdbc:h2:file:./data
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.jpa.hibernate.ddl-auto=update
spring.h2.console.enabled=true
spring.h2.console.settings.trace=false
spring.h2.console.settings.web-allow-others=false
server.port=8089

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@ -0,0 +1,35 @@
version: "3" #формат конфигурации Docker Compose версии 3
services: #определение сервисов
category:
build:
context: /categoryService #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
ports:
- "8089:8089" #проброс портов
networks:
- netwrk #сеть
product:
build:
context: /productService #путь к контексту сборки
dockerfile: Dockerfile #имя докерфайла
ports:
- "8090:8090" #проброс портов
networks:
- netwrk #сеть
nginx:
image: nginx:latest #образ для контейнера
ports:
- "8091:80" #проброс портов
networks:
- netwrk #сеть
volumes:
- ./nginx.conf:/etc/nginx/nginx.conf #монтирует локальный файл конфигурации
depends_on: #зависимость от сервисов
- category
- product
networks:
netwrk:
driver: bridge #изолированная сеть

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@ -0,0 +1,27 @@
http {
server {
listen 80;
listen [::]:80;
server_name localhost;
location /categoryService/ {
proxy_pass http://category:8089/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Prefix /categoryService;
}
location /productService/ {
proxy_pass http://product:8090/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Prefix /productService;
}
}
}
events {
worker_connections 1024;
}

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@ -0,0 +1,42 @@
.gradle
build/
!gradle/wrapper/gradle-wrapper.jar
!**/src/main/**/build/
!**/src/test/**/build/
### IntelliJ IDEA ###
.idea/modules.xml
.idea/jarRepositories.xml
.idea/compiler.xml
.idea/libraries/
*.iws
*.iml
*.ipr
out/
!**/src/main/**/out/
!**/src/test/**/out/
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
bin/
!**/src/main/**/bin/
!**/src/test/**/bin/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store

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@ -0,0 +1,7 @@
FROM openjdk:17
RUN mkdir -p /usr/src/app/
WORKDIR /usr/src/app/
COPY . /usr/src/app/
RUN ./gradlew clean build
EXPOSE 8089
ENTRYPOINT ["java","-jar","build/libs/lab3-0.0.1-SNAPSHOT.jar"]

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@ -0,0 +1,34 @@
plugins {
id 'org.springframework.boot' version '2.6.3'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'categoryApp'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '17'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
implementation 'com.h2database:h2:2.1.210'
implementation 'org.hibernate.validator:hibernate-validator'
implementation 'org.springdoc:springdoc-openapi-ui:1.6.5'
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'
implementation group: 'org.springdoc', name: 'springdoc-openapi-ui', version: '1.6.5'
}
tasks.named('test') {
useJUnitPlatform()
}

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@ -0,0 +1,6 @@
#Wed Jan 10 18:23:35 GMT+04:00 2024
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

View File

@ -0,0 +1,234 @@
#!/bin/sh
#
# Copyright © 2015-2021 the original authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
#
# Gradle start up script for POSIX generated by Gradle.
#
# Important for running:
#
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
# noncompliant, but you have some other compliant shell such as ksh or
# bash, then to run this script, type that shell name before the whole
# command line, like:
#
# ksh Gradle
#
# Busybox and similar reduced shells will NOT work, because this script
# requires all of these POSIX shell features:
# * functions;
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
# * compound commands having a testable exit status, especially «case»;
# * various built-in commands including «command», «set», and «ulimit».
#
# Important for patching:
#
# (2) This script targets any POSIX shell, so it avoids extensions provided
# by Bash, Ksh, etc; in particular arrays are avoided.
#
# The "traditional" practice of packing multiple parameters into a
# space-separated string is a well documented source of bugs and security
# problems, so this is (mostly) avoided, by progressively accumulating
# options in "$@", and eventually passing that to Java.
#
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
# see the in-line comments for details.
#
# There are tweaks for specific operating systems such as AIX, CygWin,
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
#
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
app_path=$0
# Need this for daisy-chained symlinks.
while
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
[ -h "$app_path" ]
do
ls=$( ls -ld "$app_path" )
link=${ls#*' -> '}
case $link in #(
/*) app_path=$link ;; #(
*) app_path=$APP_HOME$link ;;
esac
done
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
APP_NAME="Gradle"
APP_BASE_NAME=${0##*/}
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
warn () {
echo "$*"
} >&2
die () {
echo
echo "$*"
echo
exit 1
} >&2
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "$( uname )" in #(
CYGWIN* ) cygwin=true ;; #(
Darwin* ) darwin=true ;; #(
MSYS* | MINGW* ) msys=true ;; #(
NONSTOP* ) nonstop=true ;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD=$JAVA_HOME/jre/sh/java
else
JAVACMD=$JAVA_HOME/bin/java
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD=java
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
fi
# Collect all arguments for the java command, stacking in reverse order:
# * args from the command line
# * the main class name
# * -classpath
# * -D...appname settings
# * --module-path (only if needed)
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
# For Cygwin or MSYS, switch paths to Windows format before running java
if "$cygwin" || "$msys" ; then
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
JAVACMD=$( cygpath --unix "$JAVACMD" )
# Now convert the arguments - kludge to limit ourselves to /bin/sh
for arg do
if
case $arg in #(
-*) false ;; # don't mess with options #(
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
[ -e "$t" ] ;; #(
*) false ;;
esac
then
arg=$( cygpath --path --ignore --mixed "$arg" )
fi
# Roll the args list around exactly as many times as the number of
# args, so each arg winds up back in the position where it started, but
# possibly modified.
#
# NB: a `for` loop captures its iteration list before it begins, so
# changing the positional parameters here affects neither the number of
# iterations, nor the values presented in `arg`.
shift # remove old arg
set -- "$@" "$arg" # push replacement arg
done
fi
# Collect all arguments for the java command;
# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
# shell script including quotes and variable substitutions, so put them in
# double quotes to make sure that they get re-expanded; and
# * put everything else in single quotes, so that it's not re-expanded.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
-classpath "$CLASSPATH" \
org.gradle.wrapper.GradleWrapperMain \
"$@"
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
# set -- "${ARGS[@]}" "$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#
eval "set -- $(
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
xargs -n1 |
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
tr '\n' ' '
)" '"$@"'
exec "$JAVACMD" "$@"

View File

@ -0,0 +1,89 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto execute
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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@ -0,0 +1,2 @@
rootProject.name = "lab3"

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@ -0,0 +1,19 @@
package productApp;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}

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@ -0,0 +1,48 @@
package productApp.controller;
import productApp.model.*;
import org.springframework.web.bind.annotation.*;
import productApp.service.*;
import javax.validation.Valid;
import java.util.List;
import java.util.stream.Collectors;
@RestController
@RequestMapping("/")
public class ProductController {
private final ProductService productService;
public ProductController(ProductService productService) {
this.productService = productService;
}
@GetMapping("/{id}")
public ProductFullInfoDto getProduct(@PathVariable Long id) {
return productService.findProduct(id);
}
@GetMapping("/")
public List<ProductDto> getProducts() {
return productService.findAllProducts().stream()
.map(ProductDto::new)
.collect(Collectors.toList());
}
@PostMapping("/")
public ProductFullInfoDto createProduct(@RequestBody @Valid ProductDto productDto) {
return productService.addProduct(productDto);
}
@PutMapping("/{id}")
public ProductFullInfoDto updateProduct(@RequestBody @Valid ProductDto productDto) {
return productService.updateProduct(productDto);
}
@DeleteMapping("/{id}")
public ProductDto deleteClient(@PathVariable Long id) {
return new ProductDto(productService.deleteProduct(id));
}
}

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package productApp.model;
import lombok.Data;
@Data
public class CategoryInfoDto {
private Long id;
private String name;
private String description;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}

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@ -0,0 +1,71 @@
package productApp.model;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import io.swagger.v3.oas.annotations.media.Schema;
import javax.persistence.*;
import lombok.Data;
@Data
@Entity
public class Product {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String name;
private String description;
private Long categoryId;
public Product() {
}
public Product(String name, String description, Long categoryId) {
this.name = name;
this.description = description;
this.categoryId = categoryId;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Long getCategoryId() {
return categoryId;
}
public void setCategoryId(Long categoryId) {
this.categoryId = categoryId;
}
@Override
public String toString() {
return "Category {" +
"id =" + id +
", time =" + name +
", description='" + description + '\'' +
", categoryId=" + categoryId +
'}';
}
}

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@ -0,0 +1,52 @@
package productApp.model;
import lombok.Data;
@Data
public class ProductDto {
private Long id;
private String name;
private String description;
private Long categoryId;
public ProductDto() {
}
public ProductDto(Product product) {
this.id = product.getId();
this.name = product.getName();
this.description = String.format("%s", product.getDescription());
this.categoryId = product.getCategoryId();
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Long getCategoryId() {
return categoryId;
}
public void setCategoryId(Long categoryId) {
this.categoryId = categoryId;
}
}

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@ -0,0 +1,62 @@
package productApp.model;
import lombok.Data;
@Data
public class ProductFullInfoDto {
private Long id;
private String name;
private String description;
private Long categoryId;
private CategoryInfoDto categoryInfo;
public ProductFullInfoDto() {
}
public ProductFullInfoDto(Product product, CategoryInfoDto categoryInfo) {
this.id = product.getId();
this.name = product.getName();
this.description = product.getDescription();
this.categoryId = product.getCategoryId();
this.categoryInfo = categoryInfo;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Long getCategoryId() {
return categoryId;
}
public void setCategoryId(Long categoryId) {
this.categoryId = categoryId;
}
/*public CategoryInfoDto getCategoryInfo() {
return categoryInfo;
}
public void setCategoryInfo(CategoryInfoDto categoryInfo) {
this.categoryInfo = categoryInfo;
}*/
}

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package productApp.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import productApp.model.Product;
public interface ProductRepository extends JpaRepository<Product, Long> {
}

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package productApp.service;
public class ProductNotFoundException extends RuntimeException{
public ProductNotFoundException(Long id) {
super(String.format("Learning Plan with id [%s] is not found", id));
}
}

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@ -0,0 +1,73 @@
package productApp.service;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import productApp.model.*;
import productApp.repository.*;
import org.springframework.web.client.RestTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.*;
@Service
public class ProductService {
private final ProductRepository productRepository;
private final RestTemplate restTemplate;
private final String NginxUrl = "http://nginx/categoryService/";
@Autowired
public ProductService(ProductRepository productRepository, RestTemplate restTemplate) {
this.productRepository = productRepository;
this.restTemplate = restTemplate;
}
@Transactional
public ProductFullInfoDto addProduct(ProductDto productDto) {
final Product product = new Product(productDto.getName(), productDto.getDescription(), productDto.getCategoryId());
productRepository.save(product);
CategoryInfoDto categoryInfo = restTemplate.getForObject(NginxUrl + productDto.getCategoryId(), CategoryInfoDto.class);
return new ProductFullInfoDto(product, categoryInfo);
}
@Transactional(readOnly = true)
public ProductFullInfoDto findProduct(Long id) {
final Product product = productRepository.findById(id).orElse(null);
if (product == null) {
throw new ProductNotFoundException(id);
}
CategoryInfoDto categoryInfo = restTemplate.getForObject(NginxUrl + product.getCategoryId(), CategoryInfoDto.class);
return new ProductFullInfoDto(product, categoryInfo);
}
@Transactional(readOnly = true)
public Product findProductClear(Long id) {
final Optional<Product> product = productRepository.findById(id);
return product.orElseThrow(() -> new ProductNotFoundException(id));
}
@Transactional(readOnly = true)
public List<Product> findAllProducts() {
return productRepository.findAll();
}
@Transactional
public ProductFullInfoDto updateProduct(ProductDto productDto) {
final Product currentProduct = findProductClear(productDto.getId());
currentProduct.setName(productDto.getName());
currentProduct.setDescription(productDto.getDescription());
currentProduct.setCategoryId(productDto.getCategoryId());
productRepository.save(currentProduct);
CategoryInfoDto categoryInfo = restTemplate.getForObject(NginxUrl + productDto.getCategoryId(), CategoryInfoDto.class);
return new ProductFullInfoDto(currentProduct, categoryInfo);
}
@Transactional
public Product deleteProduct(Long id) {
final Product currentProduct = findProductClear(id);
productRepository.delete(currentProduct);
return currentProduct;
}
}

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spring.main.banner-mode=off
spring.datasource.url=jdbc:h2:file:./data
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.jpa.hibernate.ddl-auto=update
spring.h2.console.enabled=true
spring.h2.console.settings.trace=false
spring.h2.console.settings.web-allow-others=false
server.port=8090

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@ -1,17 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GradleMigrationSettings" migrationVersion="1" />
<component name="GradleSettings">
<option name="linkedExternalProjectsSettings">
<GradleProjectSettings>
<option name="externalProjectPath" value="$PROJECT_DIR$" />
<option name="gradleHome" value="" />
<option name="modules">
<set>
<option value="$PROJECT_DIR$" />
</set>
</option>
</GradleProjectSettings>
</option>
</component>
</project>

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@ -1,40 +0,0 @@
# Лабораторная работа №4
## Задание
Цель: изучение проектирования приложений при помощи брокера сообщений.
Задачи:
- Установить брокер сообщений RabbitMQ.
- Пройти уроки 1, 2 и 3 из RabbitMQ Tutorials на любом языке программирования.
- Продемонстрировать работу брокера сообщений
## Ход работы
### RabbitMQ
RabbitMQ был установлен на локальное устройство без использования Docker.
### Работа брокера
Было создано три приложения - publisher, consumer1, consumer2.
Задача publisher - осуществлять отправку сообщений
![](screenshots/img1.png)
Задача consumer1 - принимать сообщения и обрабатывать его 3 секунды
![consumer1Console.png](screenshots/img2.png)
Задача consumer2 - получать сообщение и обрабатывать его моментально, без задержек
![consumer2Console.png](screenshots/img3.png)
### Результат процесса выполнения в RabbitMQ
Изначально графики были неровные, но программа выполнялась долго, они выровнялись и получились следующие графики:
![overviewRMQ.png](screenshots/img4.png)
![exchangeRMQ.png](screenshots/img5.png)
![queue1RMQ.png](screenshots/img6.png)
![queue2RMQ.png](screenshots/img7.png)
## Результат
Видео: https://disk.yandex.ru/d/OcUMxP9PYaOlPg

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plugins {
id 'java'
}
group = 'org.example'
version = '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
dependencies {
testImplementation platform('org.junit:junit-bom:5.9.1')
testImplementation 'org.junit.jupiter:junit-jupiter'
implementation 'com.rabbitmq:amqp-client:5.12.0'
}
test {
useJUnitPlatform()
}
/*task runApp1(type: JavaExec) {
main = 'org.example.Consumer1' // Замените на полное имя класса вашего приложения
classpath = sourceSets.main.runtimeClasspath
}
task runApp2(type: JavaExec) {
main = 'org.example.Consumer2' // Замените на полное имя класса вашего приложения
classpath = sourceSets.main.runtimeClasspath
}
task runApp3(type: JavaExec) {
main = 'org.example.Publisher' // Замените на полное имя класса вашего приложения
classpath = sourceSets.main.runtimeClasspath
}
task runAll {
description = 'Run all three applications concurrently'
group = 'application'
dependsOn runApp1, runApp2, runApp3
}*/

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rootProject.name = 'lab4'

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# Лабораторная работа 4. Работа с брокером сообщений
### Задание на лабораторную работу
1. Установить брокер сообщений RabbitMQ.
2. Пройти уроки 1, 2 и 3 из RabbitMQ Tutorials на любом языке программирования.
3. Продемонстрировать работу брокера сообщений.
***
### Описание работы
Были разработаны 3 приложения на *java*:
1. **Publisher**. Программа, которая создаёт один *exchange* с типом *fanout* и раз в секунду генерирует сообщение.
![](images/publisher.jpg)
2. **Consumer1**. Программа, которая создаёт под себя отдельную не анонимную очередь (*queue1*), создаёт *binding* на
*exchange* и начинает принимать сообщения. Программа обрабатывает сообщения 3 секунды.
![](images/consumer1.jpg)
3. **Consumer2**. Аналогично *Consumer1*, только сообщения обрабатываются моментально и имя очереди (*queue2*)
отличается от *Consumer1*.
![](images/consumer2.jpg)
***
### Отчеты
***RabbitMQ Management UI***
![](images/result1.jpg)
![](images/result2.jpg)
***Exchange***
![](images/result3.jpg)
***Очередь Consumer1***
![](images/queue1.jpg)
***Очередь Consumer2***
![](images/queue2.jpg)
### Ссылка на видео:
https://drive.google.com/file/d/19OdXnNM29SjayVZJ1qdsrMFTHkAUGxZf/view?usp=sharing

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package org.example;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DeliverCallback;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
public class Consumer1 {
private static final String EXCHANGE_NAME = "messages";
private static final String QUEUE_NAME = "queue1";
public static void main(String[] argv) {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setPort(5672);
factory.setUsername("guest");
factory.setPassword("guest");
try (Connection connection = factory.newConnection();
Channel channel = connection.createChannel()) {
// Создание не анонимной очереди с уникальным именем
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer 1 ожидает сообщений...");
// Обработка сообщений
DeliverCallback deliverCallback = (consumerTag, delivery) -> {
String message = new String(delivery.getBody());
System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer 1 обрабатывает " + message);
try {
Thread.sleep(3000); // Обработка 3 секунды
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer 1 получил " + message);
};
channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
while (true) {
// Поддержание работы приложения
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

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package org.example;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DeliverCallback;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
public class Consumer2 {
private static final String EXCHANGE_NAME = "messages";
private static final String QUEUE_NAME = "queue2";
public static void main(String[] argv) {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setPort(5672);
factory.setUsername("guest");
factory.setPassword("guest");
try (Connection connection = factory.newConnection();
Channel channel = connection.createChannel()) {
// Создание не анонимной очереди с уникальным именем
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer 2 ожидает сообщений...");
// Обработка сообщений
DeliverCallback deliverCallback = (consumerTag, delivery) -> {
String message = new String(delivery.getBody());
// Обработка моментально, без задержки
System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer 2 получил " + message);
};
channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
while (true) {
// Поддержание работы приложения
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

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package org.example;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
public class Publisher {
private static final String EXCHANGE_NAME = "messages";
public static void main(String[] args) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setPort(5672);
factory.setUsername("guest");
factory.setPassword("guest");
try (Connection connection = factory.newConnection();
Channel channel = connection.createChannel()) {
channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
while (true) {
String message = "сообщение от пользователя c id = " + Math.round((Math.random() * 100));
channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes());
System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Отправлено: " + message);
Thread.sleep(1000); // Пауза в 1 секунду
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}

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# Лабораторная работа №4 - Работа с брокером сообщений
## Задание
#### Цель:
Изучение проектирования приложений при помощи брокера сообщений.
#### Задачи:
* Установить брокер сообщений RabbitMQ.
* Пройти уроки 1, 2 и 3 из RabbitMQ Tutorials на любом языке программирования.
* Продемонстрировать работу брокера сообщений.
### Классы:
&nbsp;1. ```Publisher``` - класс, отвечающий за отправку сообщений
&nbsp;2. ```Consumer1``` - класс, отвечающий за принятие и обработку сообщений за задержкой 3 секунды
&nbsp;2. ```Consumer2``` - класс, отвечающий за принятие и обработку сообщений без задержек
#### Ход работы:
На компьютер был установлен брокер сообщений ```RabbitMQ```, после чего все три класса программы были одновременно запущены.
## Работа программы:
Класс ```Publisher``` успешно осуществляет отправку сообщений своим клиентам.
![](Publisher.png "")
Класс ```Consumer1``` осуществляет принятие и обработку сообщений с задержкой в 3 секунды, это можно заметить на видео.
![](Consumer1.png "")
Класс ```Consumer2``` мгновенно осуществляет принятие и обработку сообщений.
![](Consumer2.png "")
## Работа с RabbitMQ Management UI
![](overview.png "")
### Очередь ```Consumer1```
![](qConsumer1.png "")
### Очередь ```Consumer2```
![](qConsumer2.png "")
### Exchange
![](ex.png "")
# Youtube
https://youtu.be/dw7j0WgDmS8

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