Merge pull request 'morozov_vladimir_lab_4 is ready' (#176) from morozov_vladimir_lab_4 into main

Reviewed-on: #176

.idea/.gitignore

@@ -0,0 +1,6 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+/DAS_2024_1.iml
+/modules.xml
+/vcs.xml

.idea/.name

@@ -0,0 +1 @@
+main.py

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,12 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyUnresolvedReferencesInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoredIdentifiers">
+        <list>
+          <option value="str.__pos__" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/inspectionProfiles/profiles_settings.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (tukaeva_alfiya_lab_4)" project-jdk-type="Python SDK" />
+</project>

afanasev_dmitry_lab_1/README.md

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+# Лабораторная работа 1
+
+## Описание
+Данная лабораторная работа предназначена для настройки 3 сервисов — **Gitea**, **Redmine** и БД **MySQL** — с использованием Docker Compose. **Gitea** — это лёгкая система контроля версий с веб-интерфейсом, а **Redmine** — система управления проектами и задачами, а также баг-трекер. **MySQL** — база данных, используемая Redmine для хранения данных.
+
+## Запуск проекта
+1. Убедитесь, что у вас установлены **Docker** и **Docker Compose**. 
+2. Клонируйте репозиторий с данным проектом или создайте файл `docker-compose.yml` с конфигурацией, представленной там.
+3. В командной строке перейдите в директорию с файлом `docker-compose.yml`.
+4. Запустите команды:
+   ```bash
+   docker-compose up -d
+   ```
+   Эта команда запустит контейнеры в фоновом режиме.
+5. После запуска:
+   - Gitea будет доступен по адресу: [http://localhost:3000](http://localhost:3000)
+   - Redmine будет доступен по адресу: [http://localhost:8080](http://localhost:8080)
+
+## Конфигурация
+В файле `docker-compose.yml` определены следующие сервисы:
+- **Gitea**:
+  - Запускается из официального образа `gitea/gitea:latest`.
+  - Использует `SQLite` для хранения данных.
+  - Настроен на порту 3000 для веб-доступа и 2222 для SSH.
+- **Redmine**:
+  - Запускается из официального образа `redmine`.
+  - Подключен к базе данных MySQL.
+  - Доступен на порту 8080.
+- **MySQL**:
+  - Запускается из образа `mysql:8.0`.
+  - Используется Redmine для хранения данных.
+  - Настроен с дефолтными пользователем, базой и паролем.
+
+## Остановка проекта
+Для остановки контейнеров запустите:
+```bash
+docker-compose down
+```
+Это завершит работу всех контейнеров и освободит порты.
+
+## Примечания
+- При необходимости вы можете изменить порты или другие параметры, отредактировав файл `docker-compose.yml`.
+- Данные хранятся в именованных томах `gitea_data` и `db_data`, что позволяет сохранять данные при перезапуске контейнеров.
+- Ссылка на демонстрацию работы программы: https://vk.com/video215756667_456239451?list=ln-AMZSRDejYptijuOt9u

afanasev_dmitry_lab_1/docker-compose.yml

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+version: '3.9' # Версия Docker Compose
+
+services:
+  # Gitea сервис
+  gitea:
+    image: gitea/gitea:latest # Образ Gitea для запуска сервиса
+    container_name: gitea # Имя контейнера для удобства 
+    environment: # Переменные среды
+      USER_UID: 1000 # UID пользователя внутри контейнера
+      USER_GID: 1000 # GID пользователя внутри контейнера
+      GITEA__database__DB_TYPE: sqlite3 # Тип бд (SQLite для простоты)
+      GITEA__database__PATH: /data/gitea/gitea.db # Путь к базе данных 
+      GITEA__server__ROOT_URL: http://localhost:3000 # URL для доступа 
+      GITEA__server__HTTP_PORT: 3000 # Порт для веб-интерфейса 
+    volumes:
+      - gitea_data:/data # Монтирование директории данных для сохранения данных
+    ports:
+      - "3000:3000" # Порт для доступа к веб-интерфейсу Gitea
+      - "2222:22" # SSH порт для клонирования репозиториев
+    restart: always # Автоматический перезапуск контейнера в случае сбоя
+
+  # Redmine сервис
+  redmine:
+    image: redmine # Образ Redmine для запуска сервиса
+    restart: always # Автоматический перезапуск контейнера
+    ports:
+      - 8080:3000 # Порт для доступа к веб-интерфейсу 
+    environment: # Переменные среды
+      REDMINE_DB_MYSQL: db # Имя хоста бд для подключения 
+      REDMINE_DB_PASSWORD: example # Пароль для подключения к базе данных 
+
+  # MySQL база данных для Redmine
+  db:
+    image: mysql:8.0 # Образ MySQL для бд
+    restart: always # Автоматический перезапуск контейнера
+    environment: # Переменные среды
+      MYSQL_ROOT_PASSWORD: example # Пароль пользователя root для MySQL
+      MYSQL_DATABASE: redmine # Имя бд для Redmine 
+      MYSQL_USER: user # Пользователь MySQL
+      MYSQL_PASSWORD: password # Пароль для пользователя MySQL
+    volumes:
+      - db_data:/var/lib/mysql # Монтирование для сохранения данных бд
+
+volumes: # Именованные тома
+  gitea_data: # Том для данных Gitea
+  db_data: # Том для данных MySQL

afanasev_dmitry_lab_2/.gitignore

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+data/
+
+##############################
+## Java
+##############################
+.mtj.tmp/
+*.class
+*.jar
+*.war
+*.ear
+*.nar
+hs_err_pid*
+replay_pid*
+
+##############################
+## Maven
+##############################
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+pom.xml.bak
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+
+##############################
+## Gradle
+##############################
+bin/
+build/
+.gradle
+.gradletasknamecache
+gradle-app.setting
+!gradle-wrapper.jar
+
+##############################
+## IntelliJ
+##############################
+out/
+.idea/
+.idea_modules/
+*.iml
+*.ipr
+*.iws
+
+##############################
+## Eclipse
+##############################
+.settings/
+bin/
+tmp/
+.metadata
+.classpath
+.project
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.loadpath
+.factorypath
+
+##############################
+## NetBeans
+##############################
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+nbactions.xml
+nb-configuration.xml
+
+##############################
+## Visual Studio Code
+##############################
+.vscode/
+.code-workspace
+
+##############################
+## OS X
+##############################
+.DS_Store
+
+##############################
+## Miscellaneous
+##############################
+*.log

afanasev_dmitry_lab_2/README.md

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+# Лабораторная работа 2
+
+## Описание
+Данная лабораторная работа предназначена для настройки 2 сервисов (простейшего распределенного приложения) с использованием Docker Compose. **FirstService** — ищет в каталоге /var/data файл с наибольшим количеством строк и перекладывает его в /var/result/data.txt. **SecondService** — ищет наименьшее число из файла /var/result/data.txt (сгенерирован 1-ым сервисом) и сохраняет его третью степень в /var/result/result.txt. 
+
+## Запуск проекта
+1. Убедитесь, что у вас установлены **Docker** и **Docker Compose**.
+2. Клонируйте репозиторий с данным проектом.
+3. В командной строке перейдите в директорию с файлом `docker-compose.yml`.
+4. Запустите команды:
+   ```bash
+   docker-compose up -d
+   ```
+   Эта команда запустит контейнеры в фоновом режиме.
+5. После запуска:
+    - Посмотреть логи первого сервиса о том, что файл создался успешно.
+    - Посмотреть логи второго сервиса о том, что он обработал созданный первым сервисом файл.
+
+## Конфигурация
+В файле `docker-compose.yml` определены следующие сервисы:
+- **FirstService**:
+    - Создает образ из директории `firstService`.
+    - Использует локальную директорию `/var/data` и общую `/var/result` для хранения данных.
+- **SecondService**:
+    - Создает образ из директории `secondService`.
+    - Использует общую `/var/result` директорию для хранения данных.
+    - Запускается после первого сервиса.
+
+## Остановка проекта
+Для остановки контейнеров запустите:
+```bash
+docker-compose down
+```
+Это завершит работу всех контейнеров.
+
+## Примечания
+- При необходимости можно изменить директорию с данными или другие параметры, отредактировав файл `docker-compose.yml`.
+- Ссылка на демонстрацию работы программы: https://vk.com/video215756667_456239452?list=ln-rAyQWJj8q7ezqCaZzL

afanasev_dmitry_lab_2/docker-compose.yml

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+version: '3.9'
+
+services:
+  first-service:
+    build: ./firstService # Путь к докер-файлу 1 приложения
+    volumes:
+      - D:/java/DAS_2024_1/afanasev_dmitry_lab_2/data:/var/data # Монтируем директорию с данными
+      - common-volume:/var/result # Монтируем общую директорию (нужна 2-му сервису для работы)
+  second-service:
+    build: ./secondService # Путь к докер-файлу 2 приложения
+    volumes:
+      - common-volume:/var/result # Монтируем общую директорию (нужна 2-му сервису для работы)
+    depends_on:
+      - first-service # Запуск после первого сервиса
+
+volumes: # Именованные тома
+  common-volume: # Общий для 2-ух сервисов

afanasev_dmitry_lab_2/firstService/Dockerfile

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+# Используем образ с Java 17
+FROM bellsoft/liberica-openjdk-alpine:17.0.8
+
+# Создаем директорию для исходных файлов
+RUN mkdir /var/data
+
+# Создаем директорию для приложения
+WORKDIR /app
+
+# Копируем файлы приложения в контейнер
+COPY src /app/src
+
+# Компилируем приложение
+RUN javac /app/src/FirstService.java
+
+# Определяем команду для запуска приложения
+CMD ["java", "-cp", "/app/src", "FirstService"]

afanasev_dmitry_lab_2/firstService/src/FirstService.java

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+import java.io.*;
+import java.nio.file.*;
+
+public class FirstService {
+    // 1. Ищет в каталоге /var/data файл с наибольшим количеством строк и перекладывает его в /var/result/data.txt.
+
+    public static void main(String[] args) {
+        Path sourceDir = Paths.get("/var/data");
+        Path destinationDir = Paths.get("/var/result");
+        Path destinationFile = destinationDir.resolve("data.txt");
+        Path largestFile = null;
+        long maxLineCount = 0;
+
+        try {
+            // существует ли каталог /var/result, если нет, создаем
+            if (!Files.exists(destinationDir)) {
+                Files.createDirectories(destinationDir);
+            } else {
+                // иначе чистим
+                try (DirectoryStream<Path> stream = Files.newDirectoryStream(destinationDir)) {
+                    for (Path file : stream) {
+                        Files.delete(file);
+                    }
+                }
+            }
+
+            // поиск файла с наибольшим количеством строк в каталоге /var/data
+            try (DirectoryStream<Path> stream = Files.newDirectoryStream(sourceDir)) {
+                for (Path file : stream) {
+                    if (Files.isRegularFile(file)) {
+                        long lineCount = Files.lines(file).count();
+                        if (lineCount > maxLineCount) {
+                            maxLineCount = lineCount;
+                            largestFile = file;
+                        }
+                    }
+                }
+            }
+
+            // копируем файл с наибольшим количеством строк в /var/result/data.txt
+            if (largestFile != null) {
+                Files.copy(largestFile, destinationFile, StandardCopyOption.REPLACE_EXISTING);
+                System.out.println("Файл " + largestFile + " скопирован в " + destinationFile);
+            } else {
+                System.out.println("В каталоге " + sourceDir + " нет файлов.");
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

afanasev_dmitry_lab_2/secondService/Dockerfile

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+# Используем образ с Java 17
+FROM bellsoft/liberica-openjdk-alpine:17.0.8
+
+# Создаем директорию для исходных файлов
+RUN mkdir /var/data
+
+# Создаем директорию для приложения
+WORKDIR /app
+
+# Копируем файлы приложения в контейнер
+COPY src /app/src
+
+# Компилируем приложение
+RUN javac /app/src/SecondService.java
+
+# Определяем команду для запуска приложения
+CMD ["java", "-cp", "/app/src", "SecondService"]

afanasev_dmitry_lab_2/secondService/src/SecondService.java

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+import java.io.*;
+import java.nio.file.*;
+import java.util.*;
+
+public class SecondService {
+    // 2. Ищет наименьшее число из файла /var/result/data.txt и сохраняет его третью степень в /var/result/result.txt.
+
+    public static void main(String[] args) {
+        Path sourceFile = Paths.get("/var/result/data.txt");
+        Path destinationDir = Paths.get("/var/result");
+        Path destinationFile = destinationDir.resolve("result.txt");
+
+        try {
+            // создание /var/result, если не существует
+            if (!Files.exists(destinationDir)) {
+                Files.createDirectories(destinationDir);
+            }
+
+            // читаем числа из файла и находим наименьшее
+            List<Integer> numbers = new ArrayList<>();
+            try (BufferedReader reader = Files.newBufferedReader(sourceFile)) {
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    try {
+                        numbers.add(Integer.parseInt(line.trim()));
+                    } catch (NumberFormatException e) {
+                        System.out.println("Некорректная строка: " + line);
+                    }
+                }
+            }
+
+            if (!numbers.isEmpty()) {
+                // находим наименьшее число и его третью степень
+                int minNumber = Collections.min(numbers);
+                int minNumberCubed = (int) Math.pow(minNumber, 3);
+
+                // записываем результат в /var/result/result.txt
+                try (BufferedWriter writer = Files.newBufferedWriter(destinationFile)) {
+                    writer.write(String.valueOf(minNumberCubed));
+                    System.out.println("Третья степень наименьшего числа - " + minNumber + " (" + minNumberCubed +
+                            ") сохранена в " + destinationFile);
+                }
+            } else {
+                System.out.println("Файл " + sourceFile + " пуст или не содержит чисел.");
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

afanasev_dmitry_lab_3/README.md

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+# Лабораторная работа 3
+
+## Описание
+Данная лабораторная работа предназначена для настройки 3 сервисов — **Melon**, **Water** и прокси-сервер **Nginx** — с использованием Docker Compose. **Melon** — сервис с дынями, где для каждого свой арбуз, а **Water** — сервис с водой и связанных с ними арбузами. **Nginx** — прокси-сервер, работающий на Unix-подобных операционных системах.
+
+## Запуск проекта
+1. Убедитесь, что у вас установлены **Docker** и **Docker Compose**.
+2. Клонируйте репозиторий с данным проектом.
+3. В командной строке перейдите в директорию с файлом `docker-compose.yml`.
+4. Запустите команды:
+   ```bash
+   docker-compose up -d
+   ```
+   Эта команда запустит контейнеры в фоновом режиме.
+5. После запуска:
+    - Melon будет доступен по адресу: [http://localhost:8080](http://localhost:8080)
+    - Water будет доступен по адресу: [http://localhost:8081](http://localhost:8081)
+
+## Конфигурация
+В файле `docker-compose.yml` определены следующие сервисы:
+- **Melon**:
+    - Настроен на порту 8080 для веб-доступа.
+    - Обращается к **Nginx** для доступа к сервису **Water**.
+    - Реализует базовые CRUD-операции.
+- **Water**:
+    - Настроен на порту 8081 для веб-доступа.
+    - Реализует базовые CRUD-операции.
+- **Nginx**:
+    - Запускается из образа `nginx`.
+    - Используется для проксирования запросов.
+
+## Остановка проекта
+Для остановки контейнеров запустите:
+```bash
+docker-compose down
+```
+Это завершит работу всех контейнеров и освободит порты.
+
+## Примечания
+- При необходимости вы можете изменить порты или другие параметры, отредактировав файл `docker-compose.yml`.
+- Ссылка на демонстрацию работы программы: https://vk.com/video215756667_456239453?list=ln-6zVfNOSwMQtpVWKkGe

afanasev_dmitry_lab_3/docker-compose.yml

@@ -0,0 +1,25 @@
+version: '3.9'
+services:
+  melon:
+    build: ./melon
+    ports:
+      - "8080:8080"
+    expose: # Указывает, какой порт будет открыт внутри контейнера
+      - 8080
+
+  water:
+    build: ./water
+    ports:
+      - "8081:8081"
+    expose: # Указывает, какой порт будет открыт внутри контейнера
+      - 8081
+
+  nginx:
+    image: nginx
+    ports:
+      - "80:80"
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+    depends_on:
+      - melon
+      - water

afanasev_dmitry_lab_3/melon/.gitattributes

@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf

afanasev_dmitry_lab_3/melon/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

afanasev_dmitry_lab_3/melon/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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
+#
+#   http://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.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip

afanasev_dmitry_lab_3/melon/Dockerfile

@@ -0,0 +1,4 @@
+FROM bellsoft/liberica-openjdk-alpine:17.0.8
+ADD target/melon-0.0.1-SNAPSHOT.jar /app/
+CMD ["java", "-Xmx200m", "-jar", "/app/melon-0.0.1-SNAPSHOT.jar"]
+WORKDIR /app

afanasev_dmitry_lab_3/melon/mvnw

@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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
+#
+#    http://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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${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"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"

afanasev_dmitry_lab_3/melon/mvnw.cmd

@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"

afanasev_dmitry_lab_3/melon/pom.xml

@@ -0,0 +1,71 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.3.5</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>ru.ulstu</groupId>
+	<artifactId>melon</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>melon</name>
+	<description>Demo project for Spring Boot</description>
+	<url/>
+	<licenses>
+		<license/>
+	</licenses>
+	<developers>
+		<developer/>
+	</developers>
+	<scm>
+		<connection/>
+		<developerConnection/>
+		<tag/>
+		<url/>
+	</scm>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springdoc</groupId>
+			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+			<version>2.5.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<configuration>
+					<excludes>
+						<exclude>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+						</exclude>
+					</excludes>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/MelonApplication.java

@@ -0,0 +1,13 @@
+package ru.ulstu.melon;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class MelonApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(MelonApplication.class, args);
+	}
+
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/config/RestTemplateConfig.java

@@ -0,0 +1,13 @@
+package ru.ulstu.melon.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.client.RestTemplate;
+
+@Configuration
+public class RestTemplateConfig {
+    @Bean
+    public RestTemplate restTemplate() {
+        return new RestTemplate();
+    }
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/controller/MelonController.java

@@ -0,0 +1,54 @@
+package ru.ulstu.melon.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import ru.ulstu.melon.dto.CreateMelonDto;
+import ru.ulstu.melon.dto.MelonDto;
+import ru.ulstu.melon.dto.UpdateMelonDto;
+import ru.ulstu.melon.model.Melon;
+import ru.ulstu.melon.service.MelonService;
+
+import java.util.Collection;
+import java.util.UUID;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/melon")
+public class MelonController {
+    private final MelonService melonService;
+
+    @GetMapping
+    public ResponseEntity<Collection<Melon>> get() {
+        return new ResponseEntity<>(melonService.get(), HttpStatus.OK);
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<MelonDto> get(@PathVariable UUID id) {
+        return new ResponseEntity<>(melonService.get(id), HttpStatus.OK);
+    }
+
+    @PostMapping
+    public ResponseEntity<MelonDto> add(@RequestBody CreateMelonDto dto) {
+        return new ResponseEntity<>(melonService.add(dto), HttpStatus.OK);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<MelonDto> update(@PathVariable UUID id, @RequestBody UpdateMelonDto dto) {
+        return new ResponseEntity<>(melonService.update(id, dto), HttpStatus.OK);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable UUID id) {
+        melonService.delete(id);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/dto/CreateMelonDto.java

@@ -0,0 +1,14 @@
+package ru.ulstu.melon.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.util.UUID;
+
+@AllArgsConstructor
+@Getter
+public class CreateMelonDto {
+    private Boolean isRipe;
+    private Double weight;
+    private UUID waterMelonId;
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/dto/MelonDto.java

@@ -0,0 +1,28 @@
+package ru.ulstu.melon.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+import ru.ulstu.melon.model.Melon;
+import ru.ulstu.melon.model.Water;
+
+import java.util.UUID;
+
+@AllArgsConstructor
+@Getter
+@Setter
+public class MelonDto {
+    private UUID id;
+    private Boolean isRipe;
+    private Double weight;
+    private UUID waterMelonId;
+    private WaterDto waterMelon;
+
+    public MelonDto(Melon melon, Water water) {
+        this.id = melon.getId();
+        this.isRipe = melon.getIsRipe();
+        this.weight = melon.getWeight();
+        this.waterMelonId = melon.getWaterMelonId();
+        this.waterMelon = new WaterDto(water);
+    }
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/dto/UpdateMelonDto.java

@@ -0,0 +1,11 @@
+package ru.ulstu.melon.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class UpdateMelonDto {
+    private Boolean isRipe;
+    private Double weight;
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/dto/WaterDto.java

@@ -0,0 +1,23 @@
+package ru.ulstu.melon.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+import ru.ulstu.melon.model.Water;
+
+import java.util.UUID;
+
+@Getter
+@Setter
+@AllArgsConstructor
+public class WaterDto {
+    private UUID id;
+    private Boolean isSweetBottom;
+    private Double volume;
+
+    public WaterDto(Water water) {
+        this.id = water.getId();
+        this.isSweetBottom = water.getIsSweetBottom();
+        this.volume = water.getVolume();
+    }
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/model/Melon.java

@@ -0,0 +1,19 @@
+package ru.ulstu.melon.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.util.UUID;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+@Setter
+public class Melon {
+    private UUID id;
+    private Boolean isRipe;
+    private Double weight;
+    private UUID waterMelonId;
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/model/Water.java

@@ -0,0 +1,18 @@
+package ru.ulstu.melon.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+import java.util.UUID;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+public class Water {
+    private UUID id;
+    private Boolean isSweetBottom;
+    private Double volume;
+    private List<Melon> waterMelons;
+}

afanasev_dmitry_lab_3/melon/src/main/java/ru/ulstu/melon/service/MelonService.java

@@ -0,0 +1,88 @@
+package ru.ulstu.melon.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.server.ResponseStatusException;
+import ru.ulstu.melon.dto.CreateMelonDto;
+import ru.ulstu.melon.dto.MelonDto;
+import ru.ulstu.melon.dto.UpdateMelonDto;
+import ru.ulstu.melon.model.Melon;
+import ru.ulstu.melon.model.Water;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+@Service
+@RequiredArgsConstructor
+public class MelonService {
+    private final Map<UUID, Melon> melons = new HashMap<>();
+    private final RestTemplate restTemplate;
+    private static final String WATER_SERVICE_PATH = "http://nginx/water/water/";
+
+    public Collection<Melon> get() {
+        return melons.values();
+    }
+
+    public MelonDto get(UUID id) {
+        if (!melons.containsKey(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Melon not found");
+        }
+        final Melon melon = melons.get(id);
+        return new MelonDto(melon, getWater(melon.getWaterMelonId()));
+    }
+
+    public MelonDto add(CreateMelonDto dto) {
+        Melon melon = new Melon(UUID.randomUUID(),
+                dto.getIsRipe(),
+                dto.getWeight(),
+                dto.getWaterMelonId());
+        melons.put(melon.getId(), melon);
+        Water water;
+        try {
+            String baseUrl = WATER_SERVICE_PATH + melon.getWaterMelonId() + "/addMelon";
+            water = restTemplate.postForObject(
+                    baseUrl,
+                    melon,
+                    Water.class
+            );
+        } catch (RestClientException e) {
+            throw new RuntimeException("Failed to add melon to waterMelons: " + e.getMessage(), e);
+        }
+        return new MelonDto(melon, water);
+    }
+
+    public MelonDto update(UUID id, UpdateMelonDto dto) {
+        if (!melons.containsKey(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Melon not found");
+        }
+        Melon melon = melons.get(id);
+        if (dto.getWeight() != null)
+            melon.setWeight(dto.getWeight());
+        if (dto.getIsRipe() != null)
+            melon.setIsRipe(dto.getIsRipe());
+        return new MelonDto(melon, getWater(melon.getWaterMelonId()));
+    }
+
+    public void delete(UUID id) {
+        if (!melons.containsKey(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Melon not found");
+        }
+        melons.remove(id);
+    }
+
+    private Water getWater(UUID id) {
+        Water water;
+        try {
+            String baseUrl = WATER_SERVICE_PATH + id;
+            water = restTemplate.getForEntity(baseUrl, Water.class).getBody();
+        } catch (RestClientException e) {
+            throw new RuntimeException("Failed get waterMelon for melon: " + e.getMessage());
+        }
+        return water;
+    }
+}

afanasev_dmitry_lab_3/melon/src/main/resources/application.properties

@@ -0,0 +1 @@
+spring.application.name=melon

afanasev_dmitry_lab_3/melon/src/test/java/ru/ulstu/melon/MelonApplicationTests.java

@@ -0,0 +1,13 @@
+package ru.ulstu.melon;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class MelonApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}

afanasev_dmitry_lab_3/nginx.conf

@@ -0,0 +1,19 @@
+events {
+    worker_connections 1024;
+}
+
+http {
+    server {
+        listen      80;
+        listen      [::]:80;
+        server_name localhost;
+
+        location /melon/ {
+            proxy_pass       http://melon:8080/;
+        }
+
+        location /water/ {
+            proxy_pass       http://water:8081/;
+        }
+    }
+}

afanasev_dmitry_lab_3/water/.gitattributes

@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf

afanasev_dmitry_lab_3/water/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

afanasev_dmitry_lab_3/water/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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
+#
+#   http://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.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip

afanasev_dmitry_lab_3/water/Dockerfile

@@ -0,0 +1,4 @@
+FROM bellsoft/liberica-openjdk-alpine:17.0.8
+ADD target/water-0.0.1-SNAPSHOT.jar /app/
+CMD ["java", "-Xmx200m", "-jar", "/app/water-0.0.1-SNAPSHOT.jar"]
+WORKDIR /app

afanasev_dmitry_lab_3/water/mvnw

@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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
+#
+#    http://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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${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"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"

afanasev_dmitry_lab_3/water/mvnw.cmd

@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"

afanasev_dmitry_lab_3/water/pom.xml

@@ -0,0 +1,71 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.3.5</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>ru.ulstu</groupId>
+	<artifactId>water</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>water</name>
+	<description>Demo project for Spring Boot</description>
+	<url/>
+	<licenses>
+		<license/>
+	</licenses>
+	<developers>
+		<developer/>
+	</developers>
+	<scm>
+		<connection/>
+		<developerConnection/>
+		<tag/>
+		<url/>
+	</scm>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springdoc</groupId>
+			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+			<version>2.5.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<configuration>
+					<excludes>
+						<exclude>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+						</exclude>
+					</excludes>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

afanasev_dmitry_lab_3/water/src/main/java/ru/ulstu/water/WaterApplication.java

@@ -0,0 +1,13 @@
+package ru.ulstu.water;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class WaterApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(WaterApplication.class, args);
+	}
+
+}

afanasev_dmitry_lab_3/water/src/main/java/ru/ulstu/water/controller/WaterController.java

@@ -0,0 +1,58 @@
+package ru.ulstu.water.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import ru.ulstu.water.dto.WaterDto;
+import ru.ulstu.water.model.Melon;
+import ru.ulstu.water.model.Water;
+import ru.ulstu.water.service.WaterService;
+
+import java.util.Collection;
+import java.util.UUID;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/water")
+public class WaterController {
+    private final WaterService waterService;
+
+    @GetMapping
+    public ResponseEntity<Collection<Water>> get() {
+        return new ResponseEntity<>(waterService.get(), HttpStatus.OK);
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<Water> get(@PathVariable UUID id) {
+        return new ResponseEntity<>(waterService.get(id), HttpStatus.OK);
+    }
+
+    @PostMapping
+    public ResponseEntity<Water> add(@RequestBody WaterDto dto) {
+        return new ResponseEntity<>(waterService.add(dto), HttpStatus.OK);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<Water> update(@PathVariable UUID id, @RequestBody WaterDto dto) {
+        return new ResponseEntity<>(waterService.update(id, dto), HttpStatus.OK);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable UUID id) {
+        waterService.delete(id);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+
+    @PostMapping("/{id}/addMelon")
+    public ResponseEntity<Water> addMelon(@PathVariable UUID id, @RequestBody Melon melon) {
+        return new ResponseEntity<>(waterService.addMelon(id, melon), HttpStatus.OK);
+    }
+}

afanasev_dmitry_lab_3/water/src/main/java/ru/ulstu/water/dto/WaterDto.java

@@ -0,0 +1,11 @@
+package ru.ulstu.water.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class WaterDto {
+    private Boolean isSweetBottom;
+    private Double volume;
+}

afanasev_dmitry_lab_3/water/src/main/java/ru/ulstu/water/model/Melon.java

@@ -0,0 +1,19 @@
+package ru.ulstu.water.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.util.UUID;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+@Setter
+public class Melon {
+    private UUID id;
+    private Boolean isRipe;
+    private Double weight;
+    private UUID waterMelonId;
+}

afanasev_dmitry_lab_3/water/src/main/java/ru/ulstu/water/model/Water.java

@@ -0,0 +1,20 @@
+package ru.ulstu.water.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.util.List;
+import java.util.UUID;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+@Setter
+public class Water {
+    private UUID id;
+    private Boolean isSweetBottom;
+    private Double volume;
+    private List<Melon> waterMelons;
+}

afanasev_dmitry_lab_3/water/src/main/java/ru/ulstu/water/service/WaterService.java

@@ -0,0 +1,64 @@
+package ru.ulstu.water.service;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+import org.springframework.web.server.ResponseStatusException;
+import ru.ulstu.water.dto.WaterDto;
+import ru.ulstu.water.model.Melon;
+import ru.ulstu.water.model.Water;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+@Service
+public class WaterService {
+    private final Map<UUID, Water> waters = new HashMap<>();
+
+    public Collection<Water> get() {
+        return waters.values();
+    }
+
+    public Water get(UUID id) {
+        if (!waters.containsKey(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Water not found");
+        }
+        return waters.get(id);
+    }
+
+    public Water add(WaterDto dto) {
+        Water water = new Water(UUID.randomUUID(),
+                dto.getIsSweetBottom(),
+                dto.getVolume(),
+                new ArrayList<>());
+        waters.put(water.getId(), water);
+        return water;
+    }
+
+    public Water update(UUID id, WaterDto dto) {
+        Water water = waters.get(id);
+        if (dto.getIsSweetBottom() != null)
+            water.setIsSweetBottom(dto.getIsSweetBottom());
+        if (dto.getVolume() != null)
+            water.setVolume(dto.getVolume());
+        return water;
+    }
+
+    public void delete(UUID id) {
+        if (!waters.containsKey(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Water not found");
+        }
+        waters.remove(id);
+    }
+
+    public Water addMelon(UUID id, Melon melon) {
+        if (!waters.containsKey(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Water not found");
+        }
+        final Water water = waters.get(id);
+        water.getWaterMelons().add(melon);
+        return water;
+    }
+}

afanasev_dmitry_lab_3/water/src/main/resources/application.properties

@@ -0,0 +1,2 @@
+spring.application.name=water
+server.port=8081

afanasev_dmitry_lab_3/water/src/test/java/ru/ulstu/water/WaterApplicationTests.java

@@ -0,0 +1,13 @@
+package ru.ulstu.water;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class WaterApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}

afanasev_dmitry_lab_4/README.md

@@ -0,0 +1,16 @@
+# Лабораторная работа 4
+
+## Описание
+Данная лабораторная работа предназначена для изучения проектирования приложений при помощи брокера сообщений.
+
+### Уроки из RabbitMQ Tutorials
+1. ![img.png](images/img1.png)
+2. ![img.png](images/img2.png)
+3. ![img.png](images/img3.png)
+
+### Задание
+Ссылка на демонстрацию работы программы: https://vk.com/video215756667_456239454?list=ln-IJETwWy23zLuysjetJ
+
+## Выводы
+1. Запуск 1 и 2 Consumer'а: Consumer-2 (без задержки) график Queued Messages держится на нуле, в то время как у Consumer-1 график возрастает (скорость обработки сообщений < 1 с).
+2. Запуск 2 первых Consumer'ов: обрабатывают сообщения последовательно и накапливают очередь.

afanasev_dmitry_lab_4/lesson1/.gitignore

@@ -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

afanasev_dmitry_lab_4/lesson1/.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

afanasev_dmitry_lab_4/lesson1/.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson1/.idea/misc.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DiscordProjectSettings">
+    <option name="show" value="ASK" />
+    <option name="description" value="" />
+    <option name="theme" value="material" />
+    <option name="button1Title" value="" />
+    <option name="button1Url" value="" />
+    <option name="button2Title" value="" />
+    <option name="button2Url" value="" />
+  </component>
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson1/.idea/uiDesigner.xml

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson1/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson1/pom.xml

@@ -0,0 +1,25 @@
+<?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.ulstu</groupId>
+    <artifactId>lesson1</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</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>
+    </dependencies>
+
+</project>

afanasev_dmitry_lab_4/lesson1/src/main/java/ru/ulstu/Recv.java

@@ -0,0 +1,29 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+public class Recv {
+    private final static String QUEUE_NAME = "hello";
+
+    public static void main(String[] argv) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        factory.setPort(5672);
+        Connection connection = factory.newConnection();
+        Channel channel = connection.createChannel();
+
+        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
+
+        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 -> {
+        });
+    }
+}
+

afanasev_dmitry_lab_4/lesson1/src/main/java/ru/ulstu/Send.java

@@ -0,0 +1,24 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+public class Send {
+    private final static String QUEUE_NAME = "hello";
+
+    public static void main(String[] argv) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        factory.setPort(5672);
+        try (Connection connection = factory.newConnection();
+             Channel channel = connection.createChannel()) {
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            String message = "Hello World!";
+            channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
+            System.out.println(" [x] Sent '" + message + "'");
+        }
+    }
+}
+

afanasev_dmitry_lab_4/lesson2/.gitignore

@@ -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

afanasev_dmitry_lab_4/lesson2/.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

afanasev_dmitry_lab_4/lesson2/.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson2/.idea/misc.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DiscordProjectSettings">
+    <option name="show" value="ASK" />
+    <option name="description" value="" />
+    <option name="theme" value="material" />
+    <option name="button1Title" value="" />
+    <option name="button1Url" value="" />
+    <option name="button2Title" value="" />
+    <option name="button2Url" value="" />
+  </component>
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson2/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson2/pom.xml

@@ -0,0 +1,25 @@
+<?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.ulstu</groupId>
+    <artifactId>lesson2</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</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>
+    </dependencies>
+
+</project>

afanasev_dmitry_lab_4/lesson2/src/main/java/ru/ulstu/NewTask.java

@@ -0,0 +1,29 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.MessageProperties;
+
+public class NewTask {
+    private static final String TASK_QUEUE_NAME = "task_queue";
+
+    public static void main(String[] argv) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        factory.setPort(5672);
+        try (Connection connection = factory.newConnection();
+             Channel channel = connection.createChannel()) {
+
+            channel.queueDeclare(TASK_QUEUE_NAME, true, false, false, null);
+
+            String message = String.join(" ", argv);
+
+
+            channel.basicPublish("", TASK_QUEUE_NAME,
+                    MessageProperties.PERSISTENT_TEXT_PLAIN,
+                    message.getBytes("UTF-8"));
+            System.out.println(" [x] Sent '" + message + "'");
+        }
+    }
+}

afanasev_dmitry_lab_4/lesson2/src/main/java/ru/ulstu/Worker.java

@@ -0,0 +1,48 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+public class Worker {
+    private static final String TASK_QUEUE_NAME = "task_queue";
+
+    public static void main(String[] argv) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        factory.setPort(5672);
+        Connection connection = factory.newConnection();
+        Channel channel = connection.createChannel();
+
+        channel.queueDeclare(TASK_QUEUE_NAME, true, false, false, null);
+        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
+
+        int prefetchCount = 1;
+        channel.basicQos(prefetchCount);
+
+        DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+            String message = new String(delivery.getBody(), "UTF-8");
+            System.out.println(" [x] Received '" + message + "'");
+            try {
+                doWork(message);
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            } finally {
+                System.out.println(" [x] Done");
+                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
+            }
+        };
+
+        boolean autoAck = false;
+        channel.basicConsume(TASK_QUEUE_NAME, autoAck, deliverCallback, consumerTag -> {
+        });
+    }
+
+    private static void doWork(String task) throws InterruptedException {
+        for (char ch : task.toCharArray()) {
+            if (ch == '.') Thread.sleep(1000);
+        }
+    }
+}
+

afanasev_dmitry_lab_4/lesson3/.gitignore

@@ -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

afanasev_dmitry_lab_4/lesson3/.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

afanasev_dmitry_lab_4/lesson3/.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson3/.idea/misc.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DiscordProjectSettings">
+    <option name="show" value="ASK" />
+    <option name="description" value="" />
+    <option name="theme" value="material" />
+    <option name="button1Title" value="" />
+    <option name="button1Url" value="" />
+    <option name="button2Title" value="" />
+    <option name="button2Url" value="" />
+  </component>
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson3/.idea/uiDesigner.xml

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson3/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
+  </component>
+</project>

afanasev_dmitry_lab_4/lesson3/pom.xml

@@ -0,0 +1,25 @@
+<?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.ulstu</groupId>
+    <artifactId>lesson3</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</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>
+    </dependencies>
+
+</project>

afanasev_dmitry_lab_4/lesson3/src/main/java/ru/ulstu/EmitLog.java

@@ -0,0 +1,25 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+public class EmitLog {
+    private static final String EXCHANGE_NAME = "logs";
+
+    public static void main(String[] argv) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        factory.setPort(5672);
+        try (Connection connection = factory.newConnection();
+             Channel channel = connection.createChannel()) {
+
+            channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
+
+            String message = argv.length < 1 ? "info: Hello World!" : String.join(" ", argv);
+
+            channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes("UTF-8"));
+            System.out.println(" [x] Sent '" + message + "'");
+        }
+    }
+}

afanasev_dmitry_lab_4/lesson3/src/main/java/ru/ulstu/ReceiveLogs.java

@@ -0,0 +1,33 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+public class ReceiveLogs {
+    private static final String EXCHANGE_NAME = "logs";
+
+    public static void main(String[] argv) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        factory.setPort(5672);
+        Connection connection = factory.newConnection();
+        Channel channel = connection.createChannel();
+
+        channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
+
+        String queueName = channel.queueDeclare().getQueue();
+        channel.queueBind(queueName, EXCHANGE_NAME, "");
+
+        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
+
+        DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+            String message = new String(delivery.getBody(), "UTF-8");
+            System.out.println(" [x] Received '" + message + "'");
+        };
+        channel.basicConsume(queueName, true, deliverCallback, consumerTag -> {
+        });
+    }
+}
+

afanasev_dmitry_lab_4/task/.gitignore

@@ -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

afanasev_dmitry_lab_4/task/.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

afanasev_dmitry_lab_4/task/.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

afanasev_dmitry_lab_4/task/.idea/misc.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DiscordProjectSettings">
+    <option name="show" value="ASK" />
+    <option name="description" value="" />
+    <option name="theme" value="material" />
+    <option name="button1Title" value="" />
+    <option name="button1Url" value="" />
+    <option name="button2Title" value="" />
+    <option name="button2Url" value="" />
+  </component>
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

afanasev_dmitry_lab_4/task/.idea/uiDesigner.xml

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>

afanasev_dmitry_lab_4/task/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
+  </component>
+</project>

afanasev_dmitry_lab_4/task/pom.xml

@@ -0,0 +1,25 @@
+<?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.ulstu</groupId>
+    <artifactId>task</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</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>
+    </dependencies>
+
+</project>

afanasev_dmitry_lab_4/task/src/main/java/ru/ulstu/OrderConsumer1.java

@@ -0,0 +1,38 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+public class OrderConsumer1 {
+    private static final String EXCHANGE_NAME = "orders";
+    private static final String QUEUE_NAME = "consumer1_queue";
+
+    public static void main(String[] args) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        Connection connection = factory.newConnection();
+        Channel channel = connection.createChannel();
+
+        channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
+        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
+
+        System.out.println(" [*] Consumer 1 ожидает сообщений.");
+
+        DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+            String message = new String(delivery.getBody(), "UTF-8");
+            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
+            System.out.println(" [x] Consumer 1 получил сообщение, обработает через 3 с.: " + message);
+
+            try {
+                Thread.sleep(3000);
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+        };
+        channel.basicConsume(QUEUE_NAME, false, deliverCallback, consumerTag -> {
+        });
+    }
+}

afanasev_dmitry_lab_4/task/src/main/java/ru/ulstu/OrderConsumer2.java

@@ -0,0 +1,34 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+public class OrderConsumer2 {
+    private static final String EXCHANGE_NAME = "orders";
+    private static final String QUEUE_NAME = "consumer2_queue";
+
+    public static void main(String[] args) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        Connection connection = factory.newConnection();
+        Channel channel = connection.createChannel();
+
+        // Создаём exchange и очередь
+        channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
+        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
+
+        System.out.println(" [*] Consumer 2 ожидает сообщений.");
+
+        DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+            String message = new String(delivery.getBody(), "UTF-8");
+            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
+            System.out.println(" [x] Consumer 2 моментально обработал сообщение: " + message);
+        };
+        channel.basicConsume(QUEUE_NAME, false, deliverCallback, consumerTag -> {
+        });
+    }
+}
+

afanasev_dmitry_lab_4/task/src/main/java/ru/ulstu/OrderPublisher.java

@@ -0,0 +1,26 @@
+package ru.ulstu;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+public class OrderPublisher {
+    private static final String EXCHANGE_NAME = "orders";
+
+    public static void main(String[] args) throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost("localhost");
+        try (Connection connection = factory.newConnection();
+             Channel channel = connection.createChannel()) {
+
+            channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
+
+            while (true) {
+                String message = "Новый заказ #" + System.currentTimeMillis();
+                channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes("UTF-8"));
+                System.out.println(" [x] Отправлено сообщение: " + message);
+                Thread.sleep(1000);
+            }
+        }
+    }
+}

afanasev_dmitry_lab_5/README.md

@@ -0,0 +1,31 @@
+# Лабораторная работа 5
+
+## Описание
+Задание заключается в реализации алгоритмов умножения больших квадратных матриц. Необходимо разработать два алгоритма: последовательный и параллельный. А также провести бенчмарки, а затем описать результаты в отчете.
+
+**100x100 матрица**:
+- **4 потока** — наилучший результат.
+- **10 потоков** — медленнее на почти в половину.
+- **6 и 8 потоков** — хуже 4 потоков.
+- **1 и 2 потока** — значительно медленнее.
+
+**300x300 матрица**:
+- **4 потока** — лучший результат.
+- **8 потоков** — чуть хуже.
+- **10 потоков** — медленнее.
+- **1 и 2 потока** — значительно медленнее.
+
+**500x500 матрица**:
+- **8 потоков** — лучший результат.
+- **6 и 10 потоков** — немного хуже.
+- **4 потока** — значительно медленнее.
+- **1 поток** — самый медленный.
+
+**Ссылка на демонстрацию работы программы**: https://vk.com/video215756667_456239455?list=ln-z7zFcpvxLexJd3f8ss
+
+**Вывод**:
+- Если операция сложнее, рост производительности происходит с увеличением числа потоков.
+- Слишком много потоков увеличивает накладные расходы (например, 10 потоков). Это может быть связано, например, с:
+1. **Переключением контекстов**: Когда потоков больше, чем ядер процессора, операционная система часто переключает контексты, что занимает время.
+2. **Конкуренцией за ресурсы**: Много потоков конкурируют за ограниченные ресурсы, такие как процессорное время и кэш.
+3. **Управлением потоками**: С увеличением числа потоков растёт нагрузка на систему, связанную с их созданием, управлением и завершением.

afanasev_dmitry_lab_5/main/.gitignore

@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+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

afanasev_dmitry_lab_5/main/src/MatrixMultiplier.java

@@ -0,0 +1,120 @@
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+public class MatrixMultiplier {
+    private final int[][] matrixA;
+    private final int[][] matrixB;
+    private final int[][] result;
+    private final int size;
+
+    public MatrixMultiplier(int size) {
+        this.size = size;
+        this.matrixA = generateMatrix(size);
+        this.matrixB = generateMatrix(size);
+        this.result = new int[size][size];
+    }
+
+    private int[][] generateMatrix(int size) {
+        int[][] matrix = new int[size][size];
+        for (int i = 0; i < size; i++) {
+            for (int j = 0; j < size; j++) {
+                matrix[i][j] = (int) (Math.random() * 10);
+            }
+        }
+        return matrix;
+    }
+
+    public void multiplySequential() {
+        for (int i = 0; i < size; i++) {
+            for (int j = 0; j < size; j++) {
+                for (int k = 0; k < size; k++) {
+                    result[i][j] += matrixA[i][k] * matrixB[k][j];
+                }
+            }
+        }
+    }
+
+    public void multiplyParallel(int numThreads) throws InterruptedException {
+        if (numThreads == 1) {
+            multiplySequential();
+            return;
+        }
+
+        ExecutorService executor = Executors.newFixedThreadPool(numThreads);
+        int chunkSize = (int) Math.ceil((double) size / numThreads);
+
+        for (int thread = 0; thread < numThreads; thread++) {
+            final int startRow = thread * chunkSize;
+            final int endRow = Math.min(startRow + chunkSize, size);
+
+            executor.submit(() -> {
+                for (int i = startRow; i < endRow; i++) {
+                    for (int j = 0; j < size; j++) {
+                        for (int k = 0; k < size; k++) {
+                            result[i][j] += matrixA[i][k] * matrixB[k][j];
+                        }
+                    }
+                }
+            });
+        }
+        executor.shutdown();
+        executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
+    }
+
+    private void resetResult() {
+        for (int i = 0; i < size; i++) {
+            Arrays.fill(result[i], 0);
+        }
+    }
+
+    static class Result {
+        int threads;
+        long time;
+
+        Result(int threads, long time) {
+            this.threads = threads;
+            this.time = time;
+        }
+    }
+
+    public static void main(String[] args) throws InterruptedException {
+        int[] matrixSizes = {100, 300, 500};
+        int[] threadCounts = {1, 2, 4, 6, 8, 10};
+        int runs = 5; // количество прогонов
+
+        for (int size : matrixSizes) {
+            System.out.println("\nРазмер матрицы: " + size + "x" + size);
+            MatrixMultiplier multiplier = new MatrixMultiplier(size);
+            List<Result> results = new ArrayList<>();
+
+            for (int threads : threadCounts) {
+                long totalDuration = 0;
+
+                for (int run = 0; run < runs; run++) {
+                    multiplier.resetResult();
+                    long startTime = System.nanoTime();
+                    multiplier.multiplyParallel(threads);
+                    long endTime = System.nanoTime();
+
+                    totalDuration += (endTime - startTime);
+                }
+
+                long averageDuration = totalDuration / runs;
+                results.add(new Result(threads, averageDuration));
+            }
+
+            // Сортировка по времени выполнения
+            results.sort(Comparator.comparingLong(r -> r.time));
+
+            System.out.println("Результаты (среднее время за " + runs + " прогонов):");
+            for (Result result : results) {
+                System.out.printf("Потоки: %d, среднее время: %d нс\n", result.threads, result.time);
+            }
+        }
+    }
+}

aleikin_artem_lab_1/README.md

@@ -0,0 +1,32 @@
+# Лабораторная работа 1 - Знакомство с Docker и Docker Compose
+## ПИбд-42 || Алейкин Артем
+
+### Описание
+В данной лабораторной работе мы разворачиваем три популярных сервиса — MediaWiki и Redmine — с использованием Docker Compose. Каждый сервис работает в своем контейнере и использует общую базу данных PostgreSQL для хранения данных. Мы также настраиваем проброс портов для доступа к веб-интерфейсам сервисов и используем Docker volumes для сохранения данных вне контейнеров.
+
+### Цель проекта 
+изучение современных технологий контейнеризации
+
+### Шаги для запуска:
+1. Клонирование репозитория:
+```
+git clone <ссылка-на-репозиторий>
+cd <папка репозитория>
+```
+
+2. Запуск контейнеров:
+```
+docker-compose up -d
+```
+
+3. После запуска должны быть доступны следующие контейнеры:
+
+    MediaWiki: http://localhost:8080
+    Redmine: http://localhost:8081
+
+4. Чтобы остановить контейнеры:
+```
+docker-compose down
+```
+
+Видео демонстрации работы: https://vk.com/video248424990_456239601?list=ln-sCRa9IIiV1VpInn2d1

aleikin_artem_lab_1/docker-compose.yml

@@ -0,0 +1,45 @@
+services:
+  mediawiki:
+    image: mediawiki
+    container_name: mediawiki
+    ports:
+      - "8080:80"  # Пробрасываем порт 8080 на хост для доступа к MediaWiki
+    volumes:
+      - mediawiki_data:/var/www/html/images  # Создаем volume для хранения данных MediaWiki
+    environment:
+      - MEDIAWIKI_DB_HOST=db
+      - MEDIAWIKI_DB_NAME=mediawiki
+      - MEDIAWIKI_DB_USER=root
+      - MEDIAWIKI_DB_PASSWORD=example
+    depends_on:
+      - db
+
+  redmine:
+    image: redmine
+    container_name: redmine
+    ports:
+      - "8081:3000"  # Пробрасываем порт 8081 на хост для доступа к Redmine
+    volumes:
+      - redmine_data:/usr/src/redmine/files  # Создаем volume для хранения данных Redmine
+    environment:
+      - REDMINE_DB_POSTGRESQL=db
+      - REDMINE_DB_DATABASE=redmine
+      - REDMINE_DB_USERNAME=root
+      - REDMINE_DB_PASSWORD=example
+    depends_on:
+      - db
+
+  db:
+    image: postgres:latest
+    container_name: db
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: example
+      POSTGRES_DB: postgres 
+    volumes:
+      - db_data:/var/lib/postgresql  # Volume для базы данных
+
+volumes:
+  mediawiki_data:  # volume для MediaWiki
+  redmine_data:    # volume для Redmine
+  db_data:         # volume для базы данных

artamonova_tatyana_lab_1/README.md

@@ -0,0 +1,48 @@
+## Отчет по Docker Compose конфигурации
+
+### Краткое описание:
+
+Данная конфигурация Docker Compose запускает набор сервисов, необходимых для работы WordPress и MediaWiki. Она включает в себя:
+
+- **WordPress:** веб-сервис для блогов и CMS
+- **MySQL:** база данных для хранения данных WordPress
+- **RabbitMQ:** брокер сообщений для потенциального использования в будущем
+- **MediaWiki:** вики-движок для создания и редактирования вики-страниц
+
+### Запуск лабораторной работы:
+
+1. Установить Docker и Docker Compose.
+2. Сохранить конфигурацию в файл docker-compose.yml.
+3. Запустить команду docker-compose up --build
+
+### Используемые технологии:
+
+- **Docker Compose:** инструмент для определения и запуска многоконтейнерных приложений.
+- **Docker:** платформа для создания, развертывания и запуска контейнеров.
+- **WordPress:** популярная платформа для создания блогов и CMS.
+- **MySQL:** популярная система управления базами данных.
+- **RabbitMQ:** брокер сообщений, используемый для асинхронного обмена сообщениями.
+- **MediaWiki:** свободное программное обеспечение для создания и редактирования вики-страниц.
+
+### Функциональность:
+
+Конфигурация запускает следующие сервисы:
+
+- **WordPress:** работает на порту 8080, доступен по адресу http://localhost:8080.
+- **MySQL:** предоставляет базу данных для WordPress и MediaWiki.
+- **RabbitMQ:** работает на порту 5672, доступен по адресу http://localhost:15672 для управления.
+- **MediaWiki:** работает на порту 8081, доступен по адресу http://localhost:8081.
+
+### Дополнительные сведения
+
+- **Volumes**: используются для хранения данных сервисов, чтобы они не терялись при перезапуске контейнеров.
+- **Depends_on**: указывает на зависимость между сервисами, например, WordPress зависит от MySQL.
+- **Restart policy**: определяет, как сервисы будут перезапускаться после сбоя.
+
+### Видео
+
+https://vk.com/video/@artamonovat?z=video212084908_456239356%2Fpl_212084908_-2
+
+### Заключение:
+
+Данная конфигурация Docker Compose обеспечивает простой и удобный способ запуска и управления несколькими сервисами, связанными с WordPress и MediaWiki. Она позволяет разработчикам легко развертывать и управлять приложениями в изолированной среде.