Merge pull request 'sergeev_evgenii_lab_2 is done!' (#128) from sergeev_evgenii_lab_2 into main

Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/128

belyaeva_ekaterina_lab_2/README.md

@@ -0,0 +1,81 @@
+# Лабораторная работа №2
+
+## Задание
+
+Цель: изучение техники создания простого распределённого приложения.
+
+Задачи:
+
+- Согласно варианту (0 и 1) разработать два приложения такие, что результат первого является исходными данными для второго.
+- Изучить файлы сборки образов docker и разработать их для созданных приложений.
+- Собрать файл docker-compose.yml для запуска приложений. Разобраться с монтированием каталогов из хост-системы.
+- Правильно закоммитить результат без лишних файлов.
+- Оформить pull request по правилам и отправить его на проверку.
+
+## Ход работы
+
+### Разворачивание сервисов:
+Были разработаны два приложения на java:
+
+worker-1 - Формирует файл /var/result/data.txt из первых строк всех файлов каталога /var/data.
+worker-2 - Ищет набольшее число из файла /var/result/data.txt и сохраняет его вторую степень в /var/result/result.txt.
+
+### Исходные файлы
+
+Исходные файлы содержат целые числа.
+
+В /var/result/data.txt копируются числа из первых строк каждого файла - 1, 10, 5
+
+В /var/result/result.txt записывается число 100 - квадрат наибольшего числа - 10
+
+Содержимое всех файлов показано в видео.
+
+### Dockerfile
+
+Для лр были созданы идентичные докер-файлы в обоих проектах:
+
+```
+FROM openjdk:17
+LABEL authors="tauri"
+
+RUN mkdir /var/data
+RUN mkdir /var/result
+
+WORKDIR /app
+COPY src /app/src
+
+RUN javac /app/src/Main.java
+
+CMD ["java", "-cp", "/app/src", "Main"]
+```
+- FROM - выбор базового образа 
+- LABEL - метка, что автор - tauri
+- RUN - создание директории внутри контейнера
+- WORKDIR - установка рабочей директории для последующих команд
+- COPY - копирование содержимого директории внутрь контейнера
+- RUN - компиляция исходного кода Main.java внутри контейнера
+- CMD - определение команды, которая выполняется при запуске контейнера. В данном случае происходит запуск программы на java и указывается пусть до Main.java
+
+### docker-compose.yml
+```
+version: "3" #формат конфигурации Docker Compose версии 3
+services: #определение сервисов
+  worker1:
+    build:
+      context: /worker-1 #путь к контексту сборки
+      dockerfile: Dockerfile #имя докерфайла
+    volumes:
+      - .\var\data:/var/data #том для папки файлов
+      - .\var\result:/var/result #том для папки результатов
+  worker2:
+    depends_on: #зависимость: worker2 не будет запущен, пока worker1 не завершит свой запуск
+      - worker1
+    build:
+      context: /worker-2 #путь к контексту сборки
+      dockerfile: Dockerfile #имя докерфайла
+    volumes:
+      - .\var\result:/var/data #том для папки файлов
+      - .\var\result:/var/result #том для папки результатов
+```
+
+Работоспособность и то, что контейнеры были успешно развернуты показано в видео: [lab2.mp4](lab2.mp4)

belyaeva_ekaterina_lab_2/docker-compose.yml

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+version: "3" #формат конфигурации Docker Compose версии 3
+services: #определение сервисов
+  worker1:
+    build:
+      context: /worker-1 #путь к контексту сборки
+      dockerfile: Dockerfile #имя докерфайла
+    volumes:
+      - .\var\data:/var/data #том для папки файлов
+      - .\var\result:/var/result #том для папки результатов
+  worker2:
+    depends_on: #зависимость: worker2 не будет запущен, пока worker1 не завершит свой запуск
+      - worker1
+    build:
+      context: /worker-2 #путь к контексту сборки
+      dockerfile: Dockerfile #имя докерфайла
+    volumes:
+      - .\var\result:/var/data #том для папки файлов
+      - .\var\result:/var/result #том для папки результатов

belyaeva_ekaterina_lab_2/var/data/txt1.txt

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+1
+2
+3
+4
+5
+6
+7

belyaeva_ekaterina_lab_2/var/data/txt2.txt

@@ -0,0 +1,4 @@
+10
+20
+30
+40

belyaeva_ekaterina_lab_2/var/data/txt3.txt

@@ -0,0 +1,5 @@
+5
+10
+15
+20
+25

belyaeva_ekaterina_lab_2/var/result/data.txt

@@ -0,0 +1,3 @@
+1
+10
+5

belyaeva_ekaterina_lab_2/var/result/result.txt

@@ -0,0 +1 @@
+100

belyaeva_ekaterina_lab_2/worker-1/Dockerfile

@@ -0,0 +1,12 @@
+FROM openjdk:17
+LABEL authors="tauri"
+
+RUN mkdir /var/data
+RUN mkdir /var/result
+
+WORKDIR /app
+COPY src /app/src
+
+RUN javac /app/src/Main.java
+
+CMD ["java", "-cp", "/app/src", "Main"]

belyaeva_ekaterina_lab_2/worker-1/src/Main.java

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+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+
+public class Main {
+    public static void main(String[] args) {
+        String directoryPath = "/var/data";
+        String resultFilePath = "/var/result/data.txt";
+
+        File directory = new File(directoryPath);
+        File resultFile = new File(resultFilePath);
+
+        try {
+            // Создаем новый файл-результат или перезаписываем существующий
+            resultFile.createNewFile();
+
+            // Получаем список всех файлов в указанном каталоге
+            File[] files = directory.listFiles();
+
+            // Проверяем, что каталог существует и содержит файлы
+            if (directory.exists() && files != null) {
+                // Создаем объект для записи данных в файл-результат
+                FileWriter fileWriter = new FileWriter(resultFile);
+                BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
+
+                // Проходимся по всем файлам в каталоге
+                for (File file : files) {
+                    // Проверяем, что текущий объект - файл
+                    if (file.isFile()) {
+                        // Создаем объект для чтения данных из файла
+                        FileReader fileReader = new FileReader(file);
+                        BufferedReader bufferedReader = new BufferedReader(fileReader);
+
+                        // Читаем строку из файла и записываем ее в файл-результат
+                        String line = bufferedReader.readLine();
+                        if (line != null) {
+                            bufferedWriter.write(line);
+                            bufferedWriter.newLine();
+                        }
+
+                        // Закрываем объекты чтения данных из файла
+                        bufferedReader.close();
+                        fileReader.close();
+                    }
+                }
+
+                // Закрываем объект для записи данных в файл-результат
+                bufferedWriter.close();
+                fileWriter.close();
+
+                System.out.println("Файл /var/result/data.txt успешно создан.");
+            } else {
+                System.out.println("Указанный каталог не существует или не содержит файлы.");
+            }
+        } catch (IOException e) {
+            System.out.println("Ошибка при создании файла: " + e.getMessage());
+        }
+    }
+}

belyaeva_ekaterina_lab_2/worker-2/Dockerfile

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

belyaeva_ekaterina_lab_2/worker-2/src/Main.java

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+import java.io.*;
+import java.util.*;
+import java.lang.Math;
+
+public class Main {
+    public static void main(String[] args) {
+        String filePath = "/var/data/data.txt";
+        String resultPath = "/var/result/result.txt";
+
+        try {
+            // Чтение чисел из файла
+            List<Integer> numbers = readNumbersFromFile(filePath);
+
+            // Поиск наибольшего числа
+            int maxNumber = findMaxNumber(numbers);
+
+            // Вычисление второй степени
+            int squaredNumber = (int) Math.pow(maxNumber, 2);
+
+            // Сохранение результата в файл
+            saveResultToFile(resultPath, squaredNumber);
+
+            System.out.println("Наибольшее число: " + maxNumber);
+            System.out.println("Квадрат наибольшего числа: " + squaredNumber);
+            System.out.println("Результат сохранен в файле " + resultPath);
+        } catch (IOException e) {
+            System.out.println("Произошла ошибка при чтении/записи файла.");
+            e.printStackTrace();
+        }
+    }
+
+    // Метод для чтения чисел из файла
+    private static List<Integer> readNumbersFromFile(String filePath) throws IOException {
+        List<Integer> numbers = new ArrayList<>();
+
+        BufferedReader reader = new BufferedReader(new FileReader(filePath));
+        String line;
+
+        while ((line = reader.readLine()) != null) {
+            int number = Integer.parseInt(line.trim());
+            numbers.add(number);
+        }
+
+        reader.close();
+
+        return numbers;
+    }
+
+    // Метод для поиска наибольшего числа в списке
+    private static int findMaxNumber(List<Integer> numbers) {
+        int maxNumber = Integer.MIN_VALUE;
+
+        for (int number : numbers) {
+            if (number > maxNumber) {
+                maxNumber = number;
+            }
+        }
+
+        return maxNumber;
+    }
+
+    // Метод для сохранения результата в файл
+    private static void saveResultToFile(String filePath, int result) throws IOException {
+        BufferedWriter writer = new BufferedWriter(new FileWriter(filePath));
+        writer.write(String.valueOf(result));
+        writer.close();
+    }
+}

belyaeva_ekaterina_lab_3/README.md

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+# Лабораторная работа №3
+
+## Задание
+
+Цель: изучение шаблона проектирования gateway, построения синхронного обмена между микросервисами и архитектурного стиля RESTful API.
+
+Задачи:
+
+- Создать 2 микросервиса, реализующих CRUD на связанных сущностях.
+- Реализовать механизм синхронного обмена сообщениями между микросервисами.
+- Реализовать шлюз на основе прозрачного прокси-сервера nginx.
+
+## Ход работы
+
+### Разворачивание сервисов:
+
+Были разработаны два приложения на Java с использованием средства автоматизации сборки проектов Gradle и с использованием библиотеки spring-boot:
+
+- disciplineService - работа с дисциплинами (crud)
+- learningPlanService - работа с планами обучения (crud). При создании плана обучения выбирается id дисциплины, и через nginx и rest template происходит получение данных о дисциплины с этим id
+
+### Обмен сообщениями
+При создании плана обучения выбирается id дисциплины, и через nginx и rest template происходит получение данных о дисциплины с этим id
+
+![img.png](img.png)
+
+### Dockerfile
+Идентичные докерфайлы для приложений:
+```
+FROM openjdk:17
+RUN mkdir -p /usr/src/app/ 
+WORKDIR /usr/src/app/ 
+COPY . /usr/src/app/ 
+RUN ./gradlew clean build 
+EXPOSE 8089 
+ENTRYPOINT ["java","-jar","build/libs/lab3-0.0.1-SNAPSHOT.jar"]
+```
+### docker-compose.yml
+Файл, соединяющий сервисы (содержащий настройку Docker):
+```
+version: "3" #формат конфигурации Docker Compose версии 3
+services: #определение сервисов
+  discipline:
+    build:
+      context: /disciplineService #путь к контексту сборки
+      dockerfile: Dockerfile #имя докерфайла
+    ports:
+      - "8089:8089" #проброс портов
+    networks:
+      - netwrk #сеть
+
+  learning_plan:
+    build:
+      context: /learningPlanService #путь к контексту сборки
+      dockerfile: Dockerfile #имя докерфайла
+    ports:
+      - "8090:8090" #проброс портов
+    networks:
+      - netwrk #сеть
+
+  nginx:
+    image: nginx:latest #образ для контейнера
+    ports:
+      - "8091:80" #проброс портов
+    networks:
+      - netwrk #сеть
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf #монтирует локальный файл конфигурации
+    depends_on: #зависимость от сервисов
+      - discipline
+      - learning_plan
+
+networks:
+  netwrk:
+    driver: bridge #изолированная сеть
+```
+### nginx.conf
+Настройка nginx:
+```
+http {
+    server {
+        listen 80;
+        listen [::]:80;
+        server_name localhost;
+
+        location /disciplineService/ {
+            proxy_pass http://discipline:8089/;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-Prefix /disciplineService;
+        }
+
+        location /learningPlanService/ {
+            proxy_pass http://learning_plan:8090/;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-Prefix /learningPlanService;
+        }
+    }
+}
+
+events {
+    worker_connections  1024;
+}
+```
+
+
+## Результат
+
+Работоспособность и взаимодействие сервисов показаны в видео: [lab3.mp4](lab3.mp4)

belyaeva_ekaterina_lab_3/disciplineService/.gitignore

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

belyaeva_ekaterina_lab_3/disciplineService/.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml

belyaeva_ekaterina_lab_3/disciplineService/.idea/.name

@@ -0,0 +1 @@
+lab3

belyaeva_ekaterina_lab_3/disciplineService/.idea/gradle.xml

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

belyaeva_ekaterina_lab_3/disciplineService/.idea/misc.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

belyaeva_ekaterina_lab_3/disciplineService/Dockerfile

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

belyaeva_ekaterina_lab_3/disciplineService/build.gradle

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

belyaeva_ekaterina_lab_3/disciplineService/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Wed Jan 10 18:16:23 GMT+04:00 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

belyaeva_ekaterina_lab_3/disciplineService/gradlew

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

belyaeva_ekaterina_lab_3/disciplineService/gradlew.bat

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

belyaeva_ekaterina_lab_3/disciplineService/settings.gradle

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

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/Application.java

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

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/controller/DisciplineController.java

@@ -0,0 +1,48 @@
+package disciplineApp.controller;
+
+import disciplineApp.model.DisciplineDto;
+import org.springframework.web.bind.annotation.*;
+import disciplineApp.service.*;
+
+import javax.validation.Valid;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/")
+public class DisciplineController {
+    private final DisciplineService disciplineService;
+
+    public DisciplineController(DisciplineService disciplineService) {
+        this.disciplineService = disciplineService;
+    }
+
+    @GetMapping("/{id}")
+    public DisciplineDto getDiscipline(@PathVariable Long id) {
+        return new DisciplineDto(disciplineService.findDiscipline(id));
+    }
+
+    @GetMapping("/")
+    public List<DisciplineDto> getDisciplines() {
+        return disciplineService.findAllDisciplines().stream()
+                .map(DisciplineDto::new)
+                .collect(Collectors.toList());
+    }
+
+    @PostMapping("/")
+    public DisciplineDto createDiscipline(@RequestBody @Valid DisciplineDto disciplineDto) {
+        return new DisciplineDto(disciplineService.addDiscipline(disciplineDto));
+    }
+
+    @PutMapping("/{id}")
+    public DisciplineDto updateDiscipline(@RequestBody @Valid DisciplineDto disciplineDto) {
+        return new DisciplineDto(disciplineService.updateDiscipline(disciplineDto));
+    }
+
+
+    @DeleteMapping("/{id}")
+    public DisciplineDto deleteDiscipline(@PathVariable Long id) {
+        return new DisciplineDto(disciplineService.deleteDiscipline(id));
+    }
+
+}

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/model/Discipline.java

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

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/model/DisciplineDto.java

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

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/repository/DisciplineRepository.java

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

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/service/DisciplineNotFoundException.java

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

belyaeva_ekaterina_lab_3/disciplineService/src/main/java/disciplineApp/service/DisciplineService.java

@@ -0,0 +1,49 @@
+package disciplineApp.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import disciplineApp.model.*;
+import disciplineApp.repository.*;
+
+import java.util.*;
+
+@Service
+public class DisciplineService {
+    private final DisciplineRepository disciplineRepository;
+
+    public DisciplineService(DisciplineRepository disciplineRepository) {
+        this.disciplineRepository = disciplineRepository;
+    }
+
+    @Transactional
+    public Discipline addDiscipline(DisciplineDto disciplineDto) {
+        final Discipline discipline = new Discipline(disciplineDto.getName(), disciplineDto.getDescription());
+        return disciplineRepository.save(discipline);
+    }
+
+    @Transactional(readOnly = true)
+    public Discipline findDiscipline(Long id) {
+        final Optional<Discipline> discipline = disciplineRepository.findById(id);
+        return discipline.orElseThrow(() -> new DisciplineNotFoundException(id));
+    }
+
+    @Transactional(readOnly = true)
+    public List<Discipline> findAllDisciplines() {
+        return disciplineRepository.findAll();
+    }
+
+    @Transactional
+    public Discipline updateDiscipline(DisciplineDto disciplineDto) {
+        final Discipline currentDiscipline = findDiscipline(disciplineDto.getId());
+        currentDiscipline.setName(disciplineDto.getName());
+        currentDiscipline.setDescription(disciplineDto.getDescription());
+        return disciplineRepository.save(currentDiscipline);
+    }
+
+    @Transactional
+    public Discipline deleteDiscipline(Long id) {
+        final Discipline currentDiscipline = findDiscipline(id);
+        disciplineRepository.delete(currentDiscipline);
+        return currentDiscipline;
+    }
+}

belyaeva_ekaterina_lab_3/disciplineService/src/main/resources/application.properties

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

belyaeva_ekaterina_lab_3/docker-compose.yml

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

belyaeva_ekaterina_lab_3/learningPlanService/.gitignore

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

belyaeva_ekaterina_lab_3/learningPlanService/.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml

belyaeva_ekaterina_lab_3/learningPlanService/.idea/.name

@@ -0,0 +1 @@
+lab3

belyaeva_ekaterina_lab_3/learningPlanService/.idea/gradle.xml

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

belyaeva_ekaterina_lab_3/learningPlanService/.idea/misc.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

belyaeva_ekaterina_lab_3/learningPlanService/Dockerfile

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

belyaeva_ekaterina_lab_3/learningPlanService/build.gradle

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

belyaeva_ekaterina_lab_3/learningPlanService/gradle/wrapper/gradle-wrapper.properties

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

belyaeva_ekaterina_lab_3/learningPlanService/gradlew

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

belyaeva_ekaterina_lab_3/learningPlanService/gradlew.bat

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

belyaeva_ekaterina_lab_3/learningPlanService/settings.gradle

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

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/Application.java

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

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/controller/LearningPlanController.java

@@ -0,0 +1,48 @@
+package learningPlanApp.controller;
+
+import learningPlanApp.model.*;
+import org.springframework.web.bind.annotation.*;
+import learningPlanApp.service.*;
+
+import javax.validation.Valid;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/")
+public class LearningPlanController {
+    private final LearningPlanService learningPlanService;
+
+    public LearningPlanController(LearningPlanService learningPlanService) {
+        this.learningPlanService = learningPlanService;
+    }
+
+    @GetMapping("/{id}")
+    public LearningPlanFullInfoDto getLearningPlan(@PathVariable Long id) {
+        return learningPlanService.findLearningPlan(id);
+    }
+
+    @GetMapping("/")
+    public List<LearningPlanDto> getLearningPlans() {
+        return learningPlanService.findAllLearningPlans().stream()
+                .map(LearningPlanDto::new)
+                .collect(Collectors.toList());
+    }
+
+    @PostMapping("/")
+    public LearningPlanFullInfoDto createLearningPlan(@RequestBody @Valid LearningPlanDto learningPlanDto) {
+        return learningPlanService.addLearningPlan(learningPlanDto);
+    }
+
+    @PutMapping("/{id}")
+    public LearningPlanFullInfoDto updateLearningPlan(@RequestBody @Valid LearningPlanDto learningPlanDto) {
+        return learningPlanService.updateLearningPlan(learningPlanDto);
+    }
+
+
+    @DeleteMapping("/{id}")
+    public LearningPlanDto deleteClient(@PathVariable Long id) {
+        return new LearningPlanDto(learningPlanService.deleteLearningPlan(id));
+    }
+
+}

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/model/DisciplineInfoDto.java

@@ -0,0 +1,34 @@
+package learningPlanApp.model;
+
+import lombok.Data;
+
+@Data
+public class DisciplineInfoDto {
+    private Long id;
+    private String name;
+    private String description;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+}

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/model/LearningPlan.java

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

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/model/LearningPlanDto.java

@@ -0,0 +1,52 @@
+package learningPlanApp.model;
+import lombok.Data;
+
+@Data
+public class LearningPlanDto {
+    private Long id;
+    private String name;
+    private String description;
+    private Long disciplineId;
+
+    public LearningPlanDto() {
+    }
+
+    public LearningPlanDto(LearningPlan learningPlan) {
+        this.id = learningPlan.getId();
+        this.name = learningPlan.getName();
+        this.description = String.format("%s", learningPlan.getDescription());
+        this.disciplineId = learningPlan.getDisciplineId();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Long getDisciplineId() {
+        return disciplineId;
+    }
+
+    public void setDisciplineId(Long disciplineId) {
+        this.disciplineId = disciplineId;
+    }
+}

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/model/LearningPlanFullInfoDto.java

@@ -0,0 +1,62 @@
+package learningPlanApp.model;
+import lombok.Data;
+
+@Data
+public class LearningPlanFullInfoDto {
+    private Long id;
+    private String name;
+    private String description;
+    private Long disciplineId;
+    private DisciplineInfoDto disciplineInfo;
+
+    public LearningPlanFullInfoDto() {
+    }
+
+    public LearningPlanFullInfoDto(LearningPlan learningPlan, DisciplineInfoDto disciplineInfo) {
+        this.id = learningPlan.getId();
+        this.name = learningPlan.getName();
+        this.description = learningPlan.getDescription();
+        this.disciplineId = learningPlan.getDisciplineId();
+        this.disciplineInfo = disciplineInfo;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Long getDisciplineId() {
+        return disciplineId;
+    }
+
+    public void setDisciplineId(Long disciplineId) {
+        this.disciplineId = disciplineId;
+    }
+
+    /*public DisciplineInfoDto getDisciplineInfo() {
+        return disciplineInfo;
+    }
+
+    public void setDisciplineInfo(DisciplineInfoDto disciplineInfo) {
+        this.disciplineInfo = disciplineInfo;
+    }*/
+}

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/repository/LearningPlanRepository.java

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

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/service/LearningPlanNotFoundException.java

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

belyaeva_ekaterina_lab_3/learningPlanService/src/main/java/learningPlanApp/service/LearningPlanService.java

@@ -0,0 +1,73 @@
+package learningPlanApp.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import learningPlanApp.model.*;
+import learningPlanApp.repository.*;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.*;
+
+@Service
+public class LearningPlanService {
+    private final LearningPlanRepository learningPlanRepository;
+    private final RestTemplate restTemplate;
+    private final String NginxUrl = "http://nginx/disciplineService/";
+
+    @Autowired
+    public LearningPlanService(LearningPlanRepository learningPlanRepository, RestTemplate restTemplate) {
+        this.learningPlanRepository = learningPlanRepository;
+        this.restTemplate = restTemplate;
+    }
+
+    @Transactional
+    public LearningPlanFullInfoDto addLearningPlan(LearningPlanDto learningPlanDto) {
+        final LearningPlan learningPlan = new LearningPlan(learningPlanDto.getName(), learningPlanDto.getDescription(), learningPlanDto.getDisciplineId());
+        learningPlanRepository.save(learningPlan);
+
+        DisciplineInfoDto disciplineInfo = restTemplate.getForObject(NginxUrl + learningPlanDto.getDisciplineId(), DisciplineInfoDto.class);
+        return new LearningPlanFullInfoDto(learningPlan, disciplineInfo);
+    }
+
+    @Transactional(readOnly = true)
+    public LearningPlanFullInfoDto findLearningPlan(Long id) {
+        final LearningPlan learningPlan = learningPlanRepository.findById(id).orElse(null);
+        if (learningPlan == null) {
+            throw new LearningPlanNotFoundException(id);
+        }
+
+        DisciplineInfoDto disciplineInfo = restTemplate.getForObject(NginxUrl + learningPlan.getDisciplineId(), DisciplineInfoDto.class);
+        return new LearningPlanFullInfoDto(learningPlan, disciplineInfo);
+    }
+
+    @Transactional(readOnly = true)
+    public LearningPlan findLearningPlanClear(Long id) {
+        final Optional<LearningPlan> learningPlan = learningPlanRepository.findById(id);
+        return learningPlan.orElseThrow(() -> new LearningPlanNotFoundException(id));
+    }
+
+    @Transactional(readOnly = true)
+    public List<LearningPlan> findAllLearningPlans() {
+        return learningPlanRepository.findAll();
+    }
+
+    @Transactional
+    public LearningPlanFullInfoDto updateLearningPlan(LearningPlanDto learningPlanDto) {
+        final LearningPlan currentLearningPlan = findLearningPlanClear(learningPlanDto.getId());
+        currentLearningPlan.setName(learningPlanDto.getName());
+        currentLearningPlan.setDescription(learningPlanDto.getDescription());
+        currentLearningPlan.setDisciplineId(learningPlanDto.getDisciplineId());
+        learningPlanRepository.save(currentLearningPlan);
+
+        DisciplineInfoDto disciplineInfo = restTemplate.getForObject(NginxUrl + learningPlanDto.getDisciplineId(), DisciplineInfoDto.class);
+        return new LearningPlanFullInfoDto(currentLearningPlan, disciplineInfo);
+    }
+
+    @Transactional
+    public LearningPlan deleteLearningPlan(Long id) {
+        final LearningPlan currentLearningPlan = findLearningPlanClear(id);
+        learningPlanRepository.delete(currentLearningPlan);
+        return currentLearningPlan;
+    }
+}

belyaeva_ekaterina_lab_3/learningPlanService/src/main/resources/application.properties

@@ -0,0 +1,11 @@
+spring.main.banner-mode=off
+spring.datasource.url=jdbc:h2:file:./data
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=update
+spring.h2.console.enabled=true
+spring.h2.console.settings.trace=false
+spring.h2.console.settings.web-allow-others=false
+server.port=8090

belyaeva_ekaterina_lab_3/nginx.conf

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

belyaeva_ekaterina_lab_4/.gitignore

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

belyaeva_ekaterina_lab_4/README.md

@@ -0,0 +1,40 @@
+# Лабораторная работа №4
+
+## Задание
+
+Цель: изучение проектирования приложений при помощи брокера сообщений.
+
+Задачи:
+
+- Установить брокер сообщений RabbitMQ.
+- Пройти уроки 1, 2 и 3 из RabbitMQ Tutorials на любом языке программирования.
+- Продемонстрировать работу брокера сообщений
+
+## Ход работы
+
+### RabbitMQ
+RabbitMQ был установлен на локальное устройство без использования Docker.
+
+### Работа брокера
+
+Было создано три приложения - publisher, consumer1, consumer2. 
+
+Задача publisher - осуществлять отправку сообщений
+![publisherConsole.png](screenshots%2FpublisherConsole.png)
+
+Задача consumer1 - принимать сообщения и обрабатывать его 3 секунды
+![consumer1Console.png](screenshots%2Fconsumer1Console.png)
+
+Задача consumer2 - получать сообщение и обрабатывать его моментально, без задержек
+![consumer2Console.png](screenshots%2Fconsumer2Console.png)
+
+### Результат процесса выполнения в RabbitMQ 
+Изначально графики были неровные, но программа выполнялась долго, они выровнялись и получились следующие графики:
+![overviewRMQ.png](screenshots%2FoverviewRMQ.png)
+![exchangeRMQ.png](screenshots%2FexchangeRMQ.png)
+![queue1RMQ.png](screenshots%2Fqueue1RMQ.png)
+![queue2RMQ.png](screenshots%2Fqueue2RMQ.png)
+
+## Результат
+
+Работоспособность показана в видео: [lab4.mp4](lab4.mp4)

belyaeva_ekaterina_lab_4/build.gradle

@@ -0,0 +1,42 @@
+plugins {
+    id 'java'
+}
+
+group = 'org.example'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation platform('org.junit:junit-bom:5.9.1')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+    implementation 'com.rabbitmq:amqp-client:5.12.0'
+
+}
+
+test {
+    useJUnitPlatform()
+}
+
+/*task runApp1(type: JavaExec) {
+    main = 'org.example.Consumer1' // Замените на полное имя класса вашего приложения
+    classpath = sourceSets.main.runtimeClasspath
+}
+
+task runApp2(type: JavaExec) {
+    main = 'org.example.Consumer2' // Замените на полное имя класса вашего приложения
+    classpath = sourceSets.main.runtimeClasspath
+}
+
+task runApp3(type: JavaExec) {
+    main = 'org.example.Publisher' // Замените на полное имя класса вашего приложения
+    classpath = sourceSets.main.runtimeClasspath
+}
+
+task runAll {
+    description = 'Run all three applications concurrently'
+    group = 'application'
+    dependsOn runApp1, runApp2, runApp3
+}*/

belyaeva_ekaterina_lab_4/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Jan 11 14:32:39 GMT+04:00 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

belyaeva_ekaterina_lab_4/gradlew

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

belyaeva_ekaterina_lab_4/gradlew.bat

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

belyaeva_ekaterina_lab_4/settings.gradle

@@ -0,0 +1,2 @@
+rootProject.name = 'lab4'
+

belyaeva_ekaterina_lab_4/src/main/java/org/example/Consumer1.java

@@ -0,0 +1,42 @@
+package org.example;
+
+import com.rabbitmq.client.*;
+
+public class Consumer1 {
+    private static final String QUEUE_NAME = "queue1";
+    private static final String EXCHANGE_NAME = "exchange";
+
+    public static void main(String[] args) throws Exception {
+        try {
+            ConnectionFactory factory = new ConnectionFactory();
+            factory.setHost("localhost");
+
+            Connection connection = factory.newConnection();
+            Channel channel = connection.createChannel();
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
+
+            DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+                String message = new String(delivery.getBody());
+                try {
+                    System.out.println("Consumer1 received" + message);
+                    Thread.sleep(3000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+                System.out.println(" Consumer1 processed the following message: " + message);
+            };
+
+            channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
+            System.out.println("Consumer1 is waiting for messages");
+
+            while (true) {
+                // Поддержание работы приложения
+            }
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}

belyaeva_ekaterina_lab_4/src/main/java/org/example/Consumer2.java

@@ -0,0 +1,37 @@
+package org.example;
+
+import com.rabbitmq.client.*;
+
+public class Consumer2 {
+    private static final String EXCHANGE_NAME = "exchange";
+    private static final String QUEUE_NAME = "queue2";
+
+    public static void main(String[] args) throws Exception {
+        try {
+            ConnectionFactory factory = new ConnectionFactory();
+            factory.setHost("localhost");
+
+            Connection connection = factory.newConnection();
+            Channel channel = connection.createChannel();
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
+            DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+                String message = new String(delivery.getBody());
+                System.out.println("Consumer2 received" + message);
+                // моментальная обработка сообщений
+                System.out.println("Consumer2 processed the following message: " + message);
+            };
+
+            channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
+            System.out.println("Consumer2 is waiting for messages");
+
+            while (true) {
+                // Поддержание работы приложения
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+}

belyaeva_ekaterina_lab_4/src/main/java/org/example/Publisher.java

@@ -0,0 +1,35 @@
+package org.example;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+import java.util.Random;
+
+public class Publisher {
+    private static final String EXCHANGE_NAME = "exchange";
+
+    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 = generateMessage(); // Генерация сообщения для журнала событий
+                    channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes());
+                    System.out.println("Sent: " + message);
+                    Thread.sleep(1000); // Ожидание 1 секунду
+                }
+            } catch (Exception e) {
+            e.printStackTrace();
+             }
+    }
+
+    private static String generateMessage() {
+        Random random = new Random();
+        return "message №" + random.nextInt(100) + 1;
+    }
+}

belyaeva_ekaterina_lab_5/.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

belyaeva_ekaterina_lab_5/README.md

@@ -0,0 +1,98 @@
+# Лабораторная работа №5
+
+## Задание
+
+Кратко: реализовать умножение двух больших квадратных матриц.
+
+Подробно: в лабораторной работе требуется сделать два алгоритма: обычный и параллельный. В параллельном алгоритме предусмотреть ручное задание количества потоков, каждый из которых будет выполнять умножение элементов матрицы в рамках своей зоны ответственности.
+
+## Ход работы
+
+### Последовательный алгоритм
+```
+public static int[][] multiplyMatricesSequential(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        for (int i = 0; i < rows1; i++) {
+            for (int j = 0; j < columns2; j++) {
+                for (int k = 0; k < columns1; k++) {
+                    result[i][j] += matrix1[i][k] * matrix2[k][j];
+                }
+            }
+        }
+
+        return result;
+    }
+```
+### Параллельный алгоритм
+```
+ public static int[][] multiplyMatricesParallel(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        int numberOfThreads = 5; // Количество потоков
+        ExecutorService executor = Executors.newFixedThreadPool(numberOfThreads);
+
+        for (int i = 0; i < rows1; i++) {
+            final int row = i;
+            executor.execute(new Runnable() {
+                @Override
+                public void run() {
+                    for (int j = 0; j < columns2; j++) {
+                        for (int k = 0; k < columns1; k++) {
+                            result[row][j] += matrix1[row][k] * matrix2[k][j];
+                        }
+                    }
+                }
+            });
+        }
+
+        executor.shutdown();
+        while (!executor.isTerminated()) {
+            // Ожидаем завершения всех потоков
+        }
+
+        return result;
+    }
+```
+
+## Результат
+
+Была проверка времени выполнения алгоритма для матриц размером 100х100, 300х300, 500х500 с разным количеством потоков.
+
+100х100, 1 поток
+
+![100thr1.png](screenshots%2F100thr1.png)
+
+100х100, 5 потоков
+
+![100thr5.png](screenshots%2F100thr5.png)
+
+300х300, 1 поток
+
+![300thr1.png](screenshots%2F300thr1.png)
+
+300х300, 5 потоков
+
+![300thr5.png](screenshots%2F300thr5.png)
+
+500х500, 1 поток
+
+![500th1.png](screenshots%2F500th1.png)
+
+500х500, 5 потоков
+
+![500thr5.png](screenshots%2F500thr5.png)
+
+Из данных скриншотов видно, что в случае с матрицей 100х100 последовательный алгоритм работает лучше, чем параллельный.
+
+Для остальных матриц параллельный алгоритм работает лучше, а также увеличение кол-ва потоков уменьшает время выполнения алгоритма. (хотя в случае матрицы 100х100 - сильно увеличивает)
+
+Работоспособность показана в видео: [lab5.mp4](lab5.mp4)

belyaeva_ekaterina_lab_5/src/Matrix100x100.java

@@ -0,0 +1,84 @@
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class Matrix100x100 {
+    private static final int SIZE = 100;
+
+    public static void main(String[] args) {
+        int[][] matrix1 = generateMatrix(SIZE, SIZE);
+        int[][] matrix2 = generateMatrix(SIZE, SIZE);
+
+        long startTime = System.currentTimeMillis();
+        int[][] resultSequential = multiplyMatricesSequential(matrix1, matrix2);
+        long endTime = System.currentTimeMillis();
+        long sequentialTime = endTime - startTime;
+
+        startTime = System.currentTimeMillis();
+        int[][] resultParallel = multiplyMatricesParallel(matrix1, matrix2);
+        endTime = System.currentTimeMillis();
+        long parallelTime = endTime - startTime;
+
+        System.out.println("Sequential multiplication time: " + sequentialTime + " ms");
+        System.out.println("Parallel multiplication time: " + parallelTime + " ms");
+    }
+
+    public static int[][] multiplyMatricesSequential(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        for (int i = 0; i < rows1; i++) {
+            for (int j = 0; j < columns2; j++) {
+                for (int k = 0; k < columns1; k++) {
+                    result[i][j] += matrix1[i][k] * matrix2[k][j];
+                }
+            }
+        }
+
+        return result;
+    }
+
+    public static int[][] multiplyMatricesParallel(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        int numberOfThreads = 5; // Количество потоков
+        ExecutorService executor = Executors.newFixedThreadPool(numberOfThreads);
+
+        for (int i = 0; i < rows1; i++) {
+            final int row = i;
+            executor.execute(new Runnable() {
+                @Override
+                public void run() {
+                    for (int j = 0; j < columns2; j++) {
+                        for (int k = 0; k < columns1; k++) {
+                            result[row][j] += matrix1[row][k] * matrix2[k][j];
+                        }
+                    }
+                }
+            });
+        }
+
+        executor.shutdown();
+        while (!executor.isTerminated()) {
+            // Ожидаем завершения всех потоков
+        }
+
+        return result;
+    }
+
+    public static int[][] generateMatrix(int rows, int columns) {
+        int[][] matrix = new int[rows][columns];
+        for (int i = 0; i < rows; i++) {
+            for (int j = 0; j < columns; j++) {
+                matrix[i][j] = (int) (Math.random() * 10);
+            }
+        }
+        return matrix;
+    }
+}

belyaeva_ekaterina_lab_5/src/Matrix300x300.java

@@ -0,0 +1,84 @@
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class Matrix300x300 {
+    private static final int SIZE = 300;
+
+    public static void main(String[] args) {
+        int[][] matrix1 = generateMatrix(SIZE, SIZE);
+        int[][] matrix2 = generateMatrix(SIZE, SIZE);
+
+        long startTime = System.currentTimeMillis();
+        int[][] resultSequential = multiplyMatricesSequential(matrix1, matrix2);
+        long endTime = System.currentTimeMillis();
+        long sequentialTime = endTime - startTime;
+
+        startTime = System.currentTimeMillis();
+        int[][] resultParallel = multiplyMatricesParallel(matrix1, matrix2);
+        endTime = System.currentTimeMillis();
+        long parallelTime = endTime - startTime;
+
+        System.out.println("Sequential multiplication time: " + sequentialTime + " ms");
+        System.out.println("Parallel multiplication time: " + parallelTime + " ms");
+    }
+
+    public static int[][] multiplyMatricesSequential(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        for (int i = 0; i < rows1; i++) {
+            for (int j = 0; j < columns2; j++) {
+                for (int k = 0; k < columns1; k++) {
+                    result[i][j] += matrix1[i][k] * matrix2[k][j];
+                }
+            }
+        }
+
+        return result;
+    }
+
+    public static int[][] multiplyMatricesParallel(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        int numberOfThreads = 5; // Количество потоков
+        ExecutorService executor = Executors.newFixedThreadPool(numberOfThreads);
+
+        for (int i = 0; i < rows1; i++) {
+            final int row = i;
+            executor.execute(new Runnable() {
+                @Override
+                public void run() {
+                    for (int j = 0; j < columns2; j++) {
+                        for (int k = 0; k < columns1; k++) {
+                            result[row][j] += matrix1[row][k] * matrix2[k][j];
+                        }
+                    }
+                }
+            });
+        }
+
+        executor.shutdown();
+        while (!executor.isTerminated()) {
+            // Ожидаем завершения всех потоков
+        }
+
+        return result;
+    }
+
+    public static int[][] generateMatrix(int rows, int columns) {
+        int[][] matrix = new int[rows][columns];
+        for (int i = 0; i < rows; i++) {
+            for (int j = 0; j < columns; j++) {
+                matrix[i][j] = (int) (Math.random() * 10);
+            }
+        }
+        return matrix;
+    }
+}

belyaeva_ekaterina_lab_5/src/Matrix500x500.java

@@ -0,0 +1,84 @@
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class Matrix500x500 {
+    private static final int SIZE = 500;
+
+    public static void main(String[] args) {
+        int[][] matrix1 = generateMatrix(SIZE, SIZE);
+        int[][] matrix2 = generateMatrix(SIZE, SIZE);
+
+        long startTime = System.currentTimeMillis();
+        int[][] resultSequential = multiplyMatricesSequential(matrix1, matrix2);
+        long endTime = System.currentTimeMillis();
+        long sequentialTime = endTime - startTime;
+
+        startTime = System.currentTimeMillis();
+        int[][] resultParallel = multiplyMatricesParallel(matrix1, matrix2);
+        endTime = System.currentTimeMillis();
+        long parallelTime = endTime - startTime;
+
+        System.out.println("Sequential multiplication time: " + sequentialTime + " ms");
+        System.out.println("Parallel multiplication time: " + parallelTime + " ms");
+    }
+
+    public static int[][] multiplyMatricesSequential(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        for (int i = 0; i < rows1; i++) {
+            for (int j = 0; j < columns2; j++) {
+                for (int k = 0; k < columns1; k++) {
+                    result[i][j] += matrix1[i][k] * matrix2[k][j];
+                }
+            }
+        }
+
+        return result;
+    }
+
+    public static int[][] multiplyMatricesParallel(int[][] matrix1, int[][] matrix2) {
+        int rows1 = matrix1.length;
+        int columns1 = matrix1[0].length;
+        int columns2 = matrix2[0].length;
+
+        int[][] result = new int[rows1][columns2];
+
+        int numberOfThreads = 1; // Количество потоков
+        ExecutorService executor = Executors.newFixedThreadPool(numberOfThreads);
+
+        for (int i = 0; i < rows1; i++) {
+            final int row = i;
+            executor.execute(new Runnable() {
+                @Override
+                public void run() {
+                    for (int j = 0; j < columns2; j++) {
+                        for (int k = 0; k < columns1; k++) {
+                            result[row][j] += matrix1[row][k] * matrix2[k][j];
+                        }
+                    }
+                }
+            });
+        }
+
+        executor.shutdown();
+        while (!executor.isTerminated()) {
+            // Ожидаем завершения всех потоков
+        }
+
+        return result;
+    }
+
+    public static int[][] generateMatrix(int rows, int columns) {
+        int[][] matrix = new int[rows][columns];
+        for (int i = 0; i < rows; i++) {
+            for (int j = 0; j < columns; j++) {
+                matrix[i][j] = (int) (Math.random() * 10);
+            }
+        }
+        return matrix;
+    }
+}

belyaeva_ekaterina_lab_6/.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

belyaeva_ekaterina_lab_6/README.md

@@ -0,0 +1,105 @@
+# Лабораторная работа №6
+
+## Задание
+
+Кратко: реализовать нахождение детерминанта квадратной матрицы.
+
+Подробно: в лабораторной работе требуется сделать два алгоритма: обычный и параллельный. В параллельном алгоритме предусмотреть ручное задание количества потоков, каждый из которых будет выполнять нахождение отдельной группы множителей.
+## Ход работы
+
+### Обычный алгоритм
+```
+private static BigDecimal findDeterminantGauss(double[][] matrix) {
+        int n = matrix.length;
+        BigDecimal det = BigDecimal.ONE;
+
+        for (int i = 0; i < n; i++) {
+            int maxRow = i;
+            for (int j = i + 1; j < n; j++) {
+                if (Math.abs(matrix[j][i]) > Math.abs(matrix[maxRow][i])) {
+                    maxRow = j;
+                }
+            }
+
+            if (maxRow != i) {
+                double[] temp = matrix[i];
+                matrix[i] = matrix[maxRow];
+                matrix[maxRow] = temp;
+
+                det = det.multiply(BigDecimal.valueOf(-1));
+            }
+
+            for (int j = i + 1; j < n; j++) {
+                double factor = matrix[j][i] / matrix[i][i];
+                for (int k = i; k < n; k++) {
+                    matrix[j][k] -= factor * matrix[i][k];
+                }
+            }
+        }
+
+        for (int i = 0; i < n; i++) {
+            det = det.multiply(BigDecimal.valueOf(matrix[i][i]));
+        }
+
+        return det;
+    }
+```
+### Параллельный алгоритм
+```
+ private static BigDecimal findDeterminantGaussParallel(double[][] matrix, int threadsCount) {
+        int n = matrix.length;
+        final BigDecimal[] det = {BigDecimal.ONE};
+
+        ExecutorService executor = Executors.newFixedThreadPool(threadsCount);
+
+        for (int i = 0; i < n; i++) {
+            final int rowIdx = i;
+
+            int maxRow = rowIdx;
+            for (int j = rowIdx + 1; j < n; j++) {
+                if (Math.abs(matrix[j][rowIdx]) > Math.abs(matrix[maxRow][rowIdx])) {
+                    maxRow = j;
+                }
+            }
+
+            if (maxRow != rowIdx) {
+                double[] temp = matrix[rowIdx];
+                matrix[rowIdx] = matrix[maxRow];
+                matrix[maxRow] = temp;
+                det[0] = det[0].multiply(BigDecimal.valueOf(-1));
+            }
+            executor.execute(() -> {
+                for (int j = rowIdx + 1; j < n; j++) {
+                    double factor = matrix[j][rowIdx] / matrix[rowIdx][rowIdx];
+                    for (int k = rowIdx; k < n; k++) {
+                        matrix[j][k] -= factor * matrix[rowIdx][k];
+                    }
+                }
+            });
+            det[0] = det[0].multiply(BigDecimal.valueOf(matrix[rowIdx][rowIdx]));
+        }
+
+        executor.shutdown();
+
+        try {
+            executor.awaitTermination(1, TimeUnit.DAYS);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        return det[0];
+    }
+```
+
+## Результат
+
+Была проверка времени выполнения алгоритма для матриц размером 100х100, 300х300, 500х500 с разным количеством потоков.
+
+![img.png](img.png)
+
+Из данного скриншота можно сделать вывод, что нахождение детерминанта для матрицы:
+- 100х100 - обычный алгоритм работает лучше параллельного, но разница не сказать что значительная
+- 300х300 - обычный алгоритм работает хуже параллельного, но при добавлении потоков параллельный алгоритм работает чуть хуже
+- 500х500 - обычный алгоритм работает значительно лучше параллельного, но параллельный начинает показывать себя лучше при увеличении количества потоков (но обычный алгоритм все равно лучше)
+
+Работоспособность показана в видео: [lab6.mp4](lab6.mp4)

belyaeva_ekaterina_lab_6/src/Main.java

@@ -0,0 +1,123 @@
+import java.math.BigDecimal;
+import java.util.Arrays;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+public class Main {
+
+    public static double[][] generateMatrix(int n) {
+        double[][] matrix = new double[n][n];
+
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < n; j++) {
+                matrix[i][j] = Math.round((Math.random() * 5));
+            }
+        }
+        return matrix;
+    }
+
+    private static BigDecimal findDeterminantGauss(double[][] matrix) {
+        int n = matrix.length;
+        BigDecimal det = BigDecimal.ONE;
+
+        for (int i = 0; i < n; i++) {
+            int maxRow = i;
+            for (int j = i + 1; j < n; j++) {
+                if (Math.abs(matrix[j][i]) > Math.abs(matrix[maxRow][i])) {
+                    maxRow = j;
+                }
+            }
+
+            if (maxRow != i) {
+                double[] temp = matrix[i];
+                matrix[i] = matrix[maxRow];
+                matrix[maxRow] = temp;
+
+                det = det.multiply(BigDecimal.valueOf(-1));
+            }
+
+            for (int j = i + 1; j < n; j++) {
+                double factor = matrix[j][i] / matrix[i][i];
+                for (int k = i; k < n; k++) {
+                    matrix[j][k] -= factor * matrix[i][k];
+                }
+            }
+        }
+
+        for (int i = 0; i < n; i++) {
+            det = det.multiply(BigDecimal.valueOf(matrix[i][i]));
+        }
+
+        return det;
+    }
+
+    private static BigDecimal findDeterminantGaussParallel(double[][] matrix, int threadsCount) {
+        int n = matrix.length;
+        final BigDecimal[] det = {BigDecimal.ONE};
+
+        ExecutorService executor = Executors.newFixedThreadPool(threadsCount);
+
+        for (int i = 0; i < n; i++) {
+            final int rowIdx = i;
+
+            int maxRow = rowIdx;
+            for (int j = rowIdx + 1; j < n; j++) {
+                if (Math.abs(matrix[j][rowIdx]) > Math.abs(matrix[maxRow][rowIdx])) {
+                    maxRow = j;
+                }
+            }
+
+            if (maxRow != rowIdx) {
+                double[] temp = matrix[rowIdx];
+                matrix[rowIdx] = matrix[maxRow];
+                matrix[maxRow] = temp;
+                det[0] = det[0].multiply(BigDecimal.valueOf(-1));
+            }
+            executor.execute(() -> {
+                for (int j = rowIdx + 1; j < n; j++) {
+                    double factor = matrix[j][rowIdx] / matrix[rowIdx][rowIdx];
+                    for (int k = rowIdx; k < n; k++) {
+                        matrix[j][k] -= factor * matrix[rowIdx][k];
+                    }
+                }
+            });
+            det[0] = det[0].multiply(BigDecimal.valueOf(matrix[rowIdx][rowIdx]));
+        }
+
+        executor.shutdown();
+
+        try {
+            executor.awaitTermination(1, TimeUnit.DAYS);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        return det[0];
+    }
+
+    public static void main(String[] args) {
+        run(100, 1);
+        run(100, 5);
+        run(300, 1);
+        run(300, 5);
+        run(500, 1);
+        run(500, 5);
+    }
+
+    public static void run(int n, int threadCount) {
+        System.out.println(String.format("Размер матрицы: %d х %d", n, n));
+        double[][] a = generateMatrix(n);
+        double[][] aClone = Arrays.copyOf(a, n);
+
+        long time = System.currentTimeMillis();
+        BigDecimal determinantGauss = findDeterminantGauss(a);
+        System.out.println("Время выполнения: " + (System.currentTimeMillis() - time) + "ms");
+
+        time = System.currentTimeMillis();
+        BigDecimal determinantGaussAsync = findDeterminantGaussParallel(aClone, threadCount);
+        System.out.println("Время параллельного выполнения: " + (System.currentTimeMillis() - time) + "ms, " +
+                "количество потоков: " + threadCount);
+        System.out.println();
+    }
+}

belyaeva_ekaterina_lab_7/README.md

@@ -0,0 +1,28 @@
+## Задание
+
+Эссе по вопросам:
+- Какие алгоритмы и методы используются для балансировки нагрузки?
+- Какие открытые и закрытые технологии существуют для балансировки нагрузки?
+- Как осуществляется балансировка нагрузки на базах данных?
+- Реверс-прокси как один из элементов балансировки нагрузки.
+
+## Ответ
+
+Балансировка нагрузки нужна для равномерного распределения запросов пользователей
+и ресурсов в системе.
+
+Для балансировки нагрузки используются различные алгоритмы и методы, например, Round Robin,
+когда каждый запрос направляется поочередно на каждый сервер в кластере. Также есть метод Least Connection, когда запросы 
+направляются на мервер с наименьшим количеством активных соединений и Weighted Round Robin, который отличается
+от обычного Round Robin тем, что у каждого сервера есть вес, который показывает его производительность, чтобы нагрузка у серверов
+была более распределенной.
+
+Существуют различные открытые и закрытые методы для балансировки нагрузки. Один из примеров для открытых технологий - nginx, 
+который был использован в одной из лабороторных работ. Он поддерживает различные методы балансировки нагрузки.   
+Касаемо закрытых технологий, в пример можно взять Citrix ADC, Kemp LoadMaster.
+
+Балансировка нагрузки на базах данных осуществляется с помощью различных методов, самый популярный из которых - горизонтальное масштабирование, 
+где где данные разделены на узлы, которые выполняют обработку только лишь собственной части данных, что позволяет распределить нагрузку и улучшить производительность БД.
+
+Реверс-прокси как элемент балансировки нагрузки является посредником между клиентом и сервером, принимая запросы клиентов 
+и перенеаправляя их на различный серверы, опираясь на их нагрузку, а затем передает ответ обратно пользователю.

belyaeva_ekaterina_lab_8/README.md

@@ -0,0 +1,25 @@
+# Лабораторная работа №8
+
+## Задание
+
+Эссе по вопросам:
+- Зачем сложные системы пишутся в распределенном стиле, где каждое отдельное приложение функционально выполняет только ограниченный спектр задач?
+- Для чего были созданы системы оркестрации приложений? Каким образом они упрощают/усложняют разработку и сопровождение распределенных систем?
+- Для чего нужны очереди обработки сообщений и что может подразумеваться под сообщениями?
+- Какие преимущества и недостатки распределенных приложений существуют на Ваш взгляд?
+- Целесообразно ли в сложную распределенную систему внедрять параллельные вычисления? Приведите примеры, когда это нужно, а когда нет.
+
+## Ответ
+
+Сложные системы пишутся в распределенном стиле для того, чтобы обеспечить масштабируемость и отказоустойчивость, а также каждый отдельный сервис оптимизируется для конкретных задач.
+Это упрощает разработку системы и распределяет нагрузку между ее компонентами.
+
+Системы оркестрации приложений были созданы для того, чтобы управлять распределенными системами (обсепечивать контроль и координацию между сервисами систем).
+Они упрощают разработку и сопровождение тем, что предоставляют дополнительные инструменты для работы с распределенными системами, но могут и усложнить разработку и сопровождение тем, что требуют дополнительного управления, персонала, и усложняют внедрение новых компонентов.
+
+Очереди обработки сообщений нужны для обмена информацией и координации между компонентами системы. Под сообщениями могут подразумеваться инструкции, запросы или просто данные.
+
+Одно из главных преимуществ распределенных систем - масштабируемость и распределение нагрузки на систему. Недостатки - сложность разработки, тестирования и синхронизации данных.
+
+Внедрять в сложную распределенную систему параллельные вычисления нужно тогда, когда вычисления являются специализацией системы и являются большими по объему (например, при перемножении матриц 100х100 это было нецелесообразно, но в примере с матрицей 500х500 параллельное умножение сыграло большую роль в уменьшении времени выполнения данного действия).
+Следовательно, это нужно тогда, когда вычисления большие, и не нужно, если операции относительно простые.

kutygin_andrey_lab_1/.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml