Merge pull request 'arutunyan_dmitry_lab_3 is ready' (#14) from arutunyan_dmitry_lab_3 into main

Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/14

arutunyan_dmitry_lab_3/README.md

@@ -0,0 +1,250 @@
+
+## Лабораторная работа 3. Вариант 4.
+### Задание 
+- Создать 2 микросервиса, реализующих CRUD на связанных сущностях.
+- Реализовать механизм синхронного обмена сообщениями между микросервисами.
+- Реализовать шлюз на основе прозрачного прокси-сервера `nginx`.
+Описание предметной области:
+
+Микросервисное приложение "Онлайн магазин", состоящее из 4х сервисов:
+- СУБД `PostgreSQL` - используется в качестве хранилища данных приложения, содержит в себе БД с сущностями "заказ" и "товар",
+- Микросервис "Товар" - микросервисное приложение, отвечающее за CRUD сущности "товар",
+- Микросервис "Заказ" - микросервисное приложение, отвечающее за CRUD сущности "заказ" и её связи с сущностью "товар",
+- Прокси-сервер `nginx` - используется в качестве шлюза для переадресации запросов на конкретные микросервисы.
+
+### Как запустить
+В директории с файлом характеристик `docker-compose.yaml` выполнить команду:
+```
+docker-compose -f docker-compose.yaml up
+```
+Это запустит `docker-compose`, который развернёт в общем контейнере 4 контейнера с сервисами для работы микросервисного приложения.
+
+### Описание работы
+#### Разработка сервиса БД
+Согласно описанию предметной области, БД приложения будет состоять из 2х сущностей, связанных как "Один ко многим": 
+```
+order (single) -> product (many)
+``` 
+В качестве СУБД будет использована PostgreSQL. Для создания таблиц базы данных, создания связей между ними их заполнения тестовыми данными создадим файл sql-запросов `database.sql`:
+```sql
+-- Создание таблицы заказов
+CREATE TABLE t_order (
+                     id INTEGER PRIMARY KEY UNIQUE NOT NULL,
+                     status VARCHAR(255) NOT NULL
+);
+-- Создание таблицы товаров
+CREATE TABLE t_product (
+                     id INTEGER PRIMARY KEY UNIQUE NOT NULL,
+                     name VARCHAR(255) NOT NULL,
+                     price INTEGER NOT NULL,
+                     order_id INTEGER,
+                     FOREIGN KEY (order_id) REFERENCES t_order(id)
+);
+-- Добавление пустых заказов
+INSERT INTO t_order (id, status)
+VALUES (0, 'Принят'),
+       (1, 'В обработке');
+
+-- Добавление товаров
+INSERT INTO t_product (id, name, price)
+VALUES (0, 'Гантели', 5000),
+       (1, 'Эспандер', 500),
+       (2, 'Тренажёр', 25990);
+``` 
+Для разворачивания сервиса БД в контейнере, пропишем необходимые конфигурации в файле `docker-compose.yaml`:
+```yaml
+db-market-api:
+    image: postgres:latest
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_PASSWORD: admin
+      POSTGRES_USER: admin
+      POSTGRES_DB: market-api
+    volumes:
+      - ./database.sql:/docker-entrypoint-initdb.d/database.sql
+    restart: always
+```
+Где `image` указывает, что мы берём последний образ `postgres`, `ports` указывает запускать сервис на порту 5432, `environment` определяет название БД - `market-api`, а `volumes` указывает, что при запуске контейнера и вызове функции `initdb`, необходимо использовать созданный ранее файл `database.sql`.
+
+#### Разработка микросервиса "Товар"
+Микросервис "Товар" представляет собой `SpringBoot` приложение на языке `Java`. Приложение было разработано в соответствии со стандартом реализации CRUD с использованием `JPA`. 
+
+На выходе у микросервиса лежит `rest` интерфейс `swagger`, через который можно отправить CRUD запросы приложению.
+
+Чтобы настроить связь приложения и БД, создадим конфигурационный файл `application.yaml`:
+```yaml
+server:
+  port: "8080"
+spring:
+  datasource:
+    url: jdbc:postgresql://db-market-api:5432/market-api
+    username: admin
+    password: admin
+``` 
+Где `port` указывает, что микросервис будет развёрнут на порту 8080, а `datasource/url` указывает адрес к сервису с БД `market-api`.
+
+Чтобы создать образ микросервиса для `docker` контейнера, создадим `Dockerfile`:
+```dockerfile
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./product-service/build/libs/product-service-0.0.1-SNAPSHOT.jar /app/product-service-0.0.1-SNAPSHOT.jar
+EXPOSE 8080
+
+CMD ["java", "-jar", "product-service-0.0.1-SNAPSHOT.jar"]
+```
+В которм указывается версия `jdk` для запуска микросервиса, копируется исполняемый файл приложения, указывается порт и обозначается команда при старте контейнера: `java -jar product-service-0.0.1-SNAPSHOT.jar`
+
+Чтобы развернуть микросервис в контейнере, пропишем его конфигурации в файле `docker-compose.yaml`:
+```yaml
+product-service:
+  build:
+    context: .
+    dockerfile: ./product-service/Dockerfile
+  ports:
+    - 8080:8080
+  restart: always
+  depends_on:
+    - db-market-api
+``` 
+Где `build` указывает на метод сборки образа в котором: `context` указывает на корневую директорию, а `dockerfile` указывает на путь к `Dockerfile`, `ports` устанавливает порт для обращения к микросервису 8080, `depends_on` указывает, что микросервис зависим от БД и разворачивается только после запуска `postgres`.
+
+#### Разработка микросервиса "Заказ"
+Микросервис "Заказ" представляет собой `SpringBoot` приложение на языке `Java`. Приложение было разработано в соответствии со стандартом реализации CRUD с использованием `JPA`. В отличие от микросервиса "Товар", данный микросервис отвечает также за связь сущностей товара и заказа, поэтому в соответсвующих методах он отправляет запрос к сервису товаров.
+
+Метод добавления товара в заказ:
+```java
+RestTemplate restTemplate = new RestTemplate();
+HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+ResponseEntity<String> response = restTemplate.exchange(
+    "http://product-service:8080/product/" + product_id, HttpMethod.GET, entity, String.class);
+
+if (response.getStatusCode().is2xxSuccessful()) {
+    String responseBody = response.getBody();
+    ObjectMapper objectMapper = new ObjectMapper();
+    ProductDto productDto;
+    try {
+        productDto = objectMapper.readValue(responseBody, ProductDto.class);
+    } catch (JsonProcessingException e) {
+        throw new Exception("Не удалось десериализовать тело запроса в объект product");
+    }
+    productDto.setOrder_id(order_id);
+    restTemplate.exchange("http://product-service:8080/product/", HttpMethod.PUT, new HttpEntity<>(productDto), String.class);
+} else {
+    throw new Exception("Ошибка получения объекта product");
+}
+```
+Таким же способом запросов к микросервису товаров работают методы чтения всех заказов и чтения одного заказа. Этим и достигается микросервисная архитектура приложения.
+
+На выходе у микросервиса лежит `rest` интерфейс `swagger`, через который можно отправить CRUD запросы приложению.
+
+Чтобы настроить связь приложения и БД, создадим конфигурационный файл `application.yaml`:
+```yaml
+server:
+  port: "8081"
+spring:
+  datasource:
+    url: jdbc:postgresql://db-market-api:5432/market-api
+    username: admin
+    password: admin
+``` 
+Где `port` указывает, что микросервис будет развёрнут на порту 8081, а `datasource/url` указывает адрес к сервису с БД `market-api`.
+
+Чтобы создать образ микросервиса для `docker` контейнера, создадим `Dockerfile`:
+```dockerfile
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./order-service/build/libs/order-service-0.0.1-SNAPSHOT.jar /app/order-service-0.0.1-SNAPSHOT.jar
+EXPOSE 8081
+
+CMD ["java", "-jar", "order-service-0.0.1-SNAPSHOT.jar"]
+```
+В которм указывается версия `jdk` для запуска микросервиса, копируется исполняемый файл приложения, указывается порт и обозначается команда при старте контейнера: `order-service-0.0.1-SNAPSHOT.jar`
+
+Чтобы развернуть микросервис в контейнере, пропишем его конфигурации в файле `docker-compose.yaml`:
+```yaml
+order-service:
+  build:
+    context: .
+    dockerfile: ./order-service/Dockerfile
+  ports:
+    - 8081:8081
+  restart: always
+  depends_on:
+    - db-market-api
+``` 
+Где `build` указывает на метод сборки образа в котором: `context` указывает на корневую директорию, а `dockerfile` указывает на путь к `Dockerfile`, `ports` устанавливает порт для обращения к микросервису 8081, `depends_on` указывает, что микросервис зависим от БД и разворачивается только после запуска `postgres`.
+
+#### Настройка прокси-сервера Nginx
+Согласно заданию, в данной архитектуре `nginx` выполняет работу шлюза и переадресовывает запросы на микросервисы в зависимости от их заголовков. Чтобы это осуществить, пропишем файл конфигураций `nginx`:
+```ini
+events {
+    worker_connections  1024;
+}
+
+http {
+    upstream product-service {
+        server product-service:8080;
+    }
+    upstream order-service {
+        server order-service:8081;
+    }
+    server {
+        listen 80;
+        listen      [::]:80;
+        server_name localhost;
+        location /product-service/ {
+            proxy_pass http://product-service/;
+        }
+        location /order-service/ {
+            proxy_pass http://order-service/;
+        }
+    }
+}
+```
+Где `events` создаёт событие запуска `nginx`, `upstream product-service` создаёт поток запросов по адресу микросервиса товаров `product-service:8080`, `upstream order-service` создаёт поток запросов по адресу микросервиса заказов `order-service:8080`, `server` разворачивает сервер-шлюз, в котором:
+- `listen` - указывает порт для прослушивания запрсов - 80
+- `server_name` - указывает host сервера, по которому будут проходить запросы - `localhost`
+- `location /product-service/` - указывает префикс запросов к микросервису товаров
+  - `proxy_pass http://product-service/` - адресует запросы с данным префиксом к микросервису товаров
+- `location /order-service/` - указывает префикс запросов к микросервису заказов
+  - `proxy_pass http://order-service/` - адресует запросы с данным префиксом к микросервису заказов
+
+Чтобы развернуть прокси-сервер `nginx` в контейнере, пропишем его конфигурации в файле `docker-compose.yaml`:
+```yaml
+nginx:
+  image: nginx:latest
+  ports:
+    - 80:80
+  volumes:
+    - ./nginx.conf:/etc/nginx/nginx.conf
+  restart: always
+  depends_on:
+    - product-service
+    - order-service
+```
+Где `image` указывает, что мы берём последний образ `nginx`, `ports` указывает запускать сервер на порту 80,  `volumes` указывает, что при запуске контейнера, локальный файл конфигураций `nginx.conf` следует поместить вместо стандартного файла конфигураций `nginx`, а depends_on указывает, что данный прокси-сервер зависим от обеих микросервисов и разворачивается только после их запуска.
+
+> **Note**
+>
+> Для обеспечения работы прокси-сервера `nginx` в качестве шлюза, необходимо чтобы все управляемые им сервисы находились в одной сети типа "мост". Если это не так, то в файле `docker-compose.yaml` необходимо создать виртуальную сеть между контейнерами
+```yaml
+networks:
+  mynetwork:
+    driver: bridge
+```
+> и назначить её каждому из контейнеров.
+
+#### Разворачивание микросервисного приложения
+log-журнал контейнеров:
+![](pic2.png "")
+
+Пример запроса к микросервисному приложению:
+![](pic1.png "")
+
+Примеры остальных запросов показаны в видео.
+
+### Видео
+https://youtu.be/VxaZRfyu3pI

arutunyan_dmitry_lab_3/database.sql

@@ -0,0 +1,23 @@
+-- Создание таблицы заказов
+CREATE TABLE t_order (
+                     id INTEGER PRIMARY KEY UNIQUE NOT NULL,
+                     status VARCHAR(255) NOT NULL
+);
+-- Создание таблицы товаров
+CREATE TABLE t_product (
+                     id INTEGER PRIMARY KEY UNIQUE NOT NULL,
+                     name VARCHAR(255) NOT NULL,
+                     price INTEGER NOT NULL,
+                     order_id INTEGER,
+                     FOREIGN KEY (order_id) REFERENCES t_order(id)
+);
+-- Добавление пустых заказов
+INSERT INTO t_order (id, status)
+VALUES (0, 'Принят'),
+       (1, 'В обработке');
+
+-- Добавление товаров
+INSERT INTO t_product (id, name, price)
+VALUES (0, 'Гантели', 5000),
+       (1, 'Эспандер', 500),
+       (2, 'Тренажёр', 25990);

arutunyan_dmitry_lab_3/docker-compose.yaml

@@ -0,0 +1,58 @@
+version: '3'
+
+networks:
+  mynetwork:
+    driver: bridge
+
+
+services:
+  db-market-api:
+    image: postgres:latest
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_PASSWORD: admin
+      POSTGRES_USER: admin
+      POSTGRES_DB: market-api
+    volumes:
+      - ./database.sql:/docker-entrypoint-initdb.d/database.sql
+    restart: always
+    networks:
+      - mynetwork
+
+  product-service:
+    build:
+      context: .
+      dockerfile: ./product-service/Dockerfile
+    ports:
+      - 8080:8080
+    restart: always
+    depends_on:
+      - db-market-api
+    networks:
+      - mynetwork
+
+  order-service:
+    build:
+      context: .
+      dockerfile: ./order-service/Dockerfile
+    ports:
+      - 8081:8081
+    restart: always
+    depends_on:
+      - db-market-api
+    networks:
+      - mynetwork
+
+  nginx:
+    image: nginx:latest
+    ports:
+      - 80:80
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+    restart: always
+    depends_on:
+      - product-service
+      - order-service
+    networks:
+      - mynetwork

arutunyan_dmitry_lab_3/nginx.conf

@@ -0,0 +1,28 @@
+events {
+    worker_connections  1024;
+}
+
+http {
+
+    upstream product-service {
+        server product-service:8080;
+    }
+    upstream order-service {
+        server order-service:8081;
+    }
+
+    server {
+        
+        listen 80;
+        listen      [::]:80;
+        server_name localhost;
+        
+        location /product-service/ {
+            proxy_pass http://product-service/;
+        }
+        
+        location /order-service/ {
+            proxy_pass http://order-service/;
+        }
+    }
+}

arutunyan_dmitry_lab_3/order-service/.gitignore

@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

arutunyan_dmitry_lab_3/order-service/Dockerfile

@@ -0,0 +1,7 @@
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./order-service/build/libs/order-service-0.0.1-SNAPSHOT.jar /app/order-service-0.0.1-SNAPSHOT.jar
+EXPOSE 8081
+
+CMD ["java", "-jar", "order-service-0.0.1-SNAPSHOT.jar"]

arutunyan_dmitry_lab_3/order-service/build.gradle

@@ -0,0 +1,38 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.1.5'
+	id 'io.spring.dependency-management' version '1.1.3'
+}
+
+group = 'com.ulstu'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	sourceCompatibility = '17'
+}
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-devtools'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.0.3'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'org.postgresql:postgresql'
+	annotationProcessor 'org.projectlombok:lombok'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

arutunyan_dmitry_lab_3/order-service/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

arutunyan_dmitry_lab_3/order-service/gradlew

@@ -0,0 +1,249 @@
+#!/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/HEAD/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
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$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
+
+
+# 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"'
+
+# 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 "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# 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 "$JAVACMD" "$@"

arutunyan_dmitry_lab_3/order-service/gradlew.bat

@@ -0,0 +1,92 @@
+@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=.
+@rem This is normally unused
+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% equ 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% equ 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!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

arutunyan_dmitry_lab_3/order-service/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'order-service'

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/OrderApplication.java

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

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/controller/OrderController.java

@@ -0,0 +1,48 @@
+package ru.services.order.controller;
+
+import ru.services.order.dto.OrderDto;
+import ru.services.order.model.Order;
+import ru.services.order.service.OrderService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/order")
+@RequiredArgsConstructor
+public class OrderController {
+    private final OrderService orderService;
+
+    @GetMapping("/")
+    public List<OrderDto> getOrders() throws Exception {
+        return orderService.findAllOrders();
+    }
+
+    @GetMapping("/{id}")
+    public OrderDto getOrder(@PathVariable int id) throws Exception {
+        return orderService.findOrder(id);
+    }
+
+    @PostMapping("/")
+    public Order createPOrder(@RequestBody OrderDto orderDto)
+    {
+        return orderService.addOrder(orderDto);
+    }
+
+    @PutMapping("/")
+    public Order updateOrder(@RequestBody OrderDto orderDto)
+    {
+        return orderService.updateOrder(orderDto);
+    }
+
+    @DeleteMapping("/{id}")
+    public void deleteOrder(@PathVariable int id) {
+        orderService.deleteOrder(id);
+    }
+
+    @PatchMapping("/{product_id}/{order_id}")
+    public void addProductToOrder(@PathVariable int product_id, @PathVariable int order_id) throws Exception {
+        orderService.addProductToOrder(product_id, order_id);
+    }
+}

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/dto/OrderDto.java

@@ -0,0 +1,12 @@
+package ru.services.order.dto;
+
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class OrderDto {
+    private int id;
+    private String status;
+    private List<ProductDto> products;
+}

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/dto/ProductDto.java

@@ -0,0 +1,13 @@
+package ru.services.order.dto;
+
+import jakarta.annotation.Nullable;
+import lombok.Data;
+
+@Data
+public class ProductDto {
+    private int id;
+    private String name;
+    private int price;
+    @Nullable
+    private Integer order_id;
+}

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/model/Order.java

@@ -0,0 +1,18 @@
+package ru.services.order.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+@Entity
+@Table(name = "t_order")
+@Data
+@Accessors(chain = true)
+public class Order {
+
+    @Id
+    private Integer id;
+    private String status;
+}

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/repository/OrderRepository.java

@@ -0,0 +1,8 @@
+package ru.services.order.repository;
+
+import ru.services.order.model.Order;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderRepository extends JpaRepository<Order, Integer> {
+
+}

arutunyan_dmitry_lab_3/order-service/src/main/java/ru/services/order/service/OrderService.java

@@ -0,0 +1,122 @@
+package ru.services.order.service;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.RestTemplate;
+import ru.services.order.dto.OrderDto;
+import ru.services.order.dto.ProductDto;
+import ru.services.order.model.Order;
+import ru.services.order.repository.OrderRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+public class OrderService {
+
+    private final OrderRepository orderRepository;
+    private static int counter = 2;
+
+    public List<OrderDto> findAllOrders() throws Exception {
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        List<OrderDto> orderDtos = new ArrayList<>();
+        for (Order order : orderRepository.findAll()) {
+            OrderDto orderDto = new OrderDto();
+            orderDto.setId(order.getId());
+            orderDto.setStatus(order.getStatus());
+
+            ResponseEntity<String> response = restTemplate.exchange(
+                    "http://product-service:8080/product/ord/" + orderDto.getId(), HttpMethod.GET, entity, String.class);
+
+            if (response.getStatusCode().is2xxSuccessful()) {
+                String responseBody = response.getBody();
+                ObjectMapper objectMapper = new ObjectMapper();
+                List<ProductDto> productDtos;
+                try {
+                    productDtos = objectMapper.readValue(responseBody, ArrayList.class);
+                    orderDto.setProducts(productDtos);
+                } catch (JsonProcessingException e) {
+                    throw new Exception("Не удалось десериализовать тело запроса в объект product");
+                }
+            } else {
+                throw new Exception("Ошибка получения объекта product");
+            }
+            orderDtos.add(orderDto);
+        }
+        return orderDtos;
+    }
+
+    public OrderDto findOrder(int id) throws Exception {
+        OrderDto orderDto = new OrderDto();
+        Order order = orderRepository.findById(id).orElseThrow();
+        orderDto.setId(order.getId());
+        orderDto.setStatus(order.getStatus());
+
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        ResponseEntity<String> response = restTemplate.exchange(
+                "http://product-service:8080/product/ord/" + orderDto.getId(), HttpMethod.GET, entity, String.class);
+
+        if (response.getStatusCode().is2xxSuccessful()) {
+            String responseBody = response.getBody();
+            ObjectMapper objectMapper = new ObjectMapper();
+            List<ProductDto> productDtos;
+            try {
+                productDtos = objectMapper.readValue(responseBody, ArrayList.class);
+                orderDto.setProducts(productDtos);
+            } catch (JsonProcessingException e) {
+                throw new Exception("Не удалось десериализовать тело запроса в объект product");
+            }
+        } else {
+            throw new Exception("Ошибка получения объекта product");
+        }
+        return orderDto;
+    }
+
+    public Order addOrder(OrderDto orderDto) {
+        Order order = new Order();
+        order.setId(counter++);
+        order.setStatus(orderDto.getStatus());
+        return orderRepository.save(order);
+    }
+
+    public Order updateOrder(OrderDto orderDto) {
+        Order order = orderRepository.findById(orderDto.getId()).orElseThrow();
+        order.setStatus(orderDto.getStatus());
+        return orderRepository.save(order);
+    }
+
+    public void addProductToOrder(int product_id, int order_id) throws Exception {
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        ResponseEntity<String> response = restTemplate.exchange(
+                "http://product-service:8080/product/" + product_id, HttpMethod.GET, entity, String.class);
+
+        if (response.getStatusCode().is2xxSuccessful()) {
+            String responseBody = response.getBody();
+            ObjectMapper objectMapper = new ObjectMapper();
+            ProductDto productDto;
+            try {
+                productDto = objectMapper.readValue(responseBody, ProductDto.class);
+            } catch (JsonProcessingException e) {
+                throw new Exception("Не удалось десериализовать тело запроса в объект product");
+            }
+            productDto.setOrder_id(order_id);
+            restTemplate.exchange("http://product-service:8080/product/", HttpMethod.PUT, new HttpEntity<>(productDto), String.class);
+        } else {
+            throw new Exception("Ошибка получения объекта product");
+        }
+    }
+
+    public void deleteOrder(int id) {
+        orderRepository.delete(orderRepository.findById(id).orElseThrow());
+    }
+}

arutunyan_dmitry_lab_3/order-service/src/main/resources/application.yaml

@@ -0,0 +1,7 @@
+server:
+  port: "8081"
+spring:
+  datasource:
+    url: jdbc:postgresql://db-market-api:5432/market-api
+    username: admin
+    password: admin

arutunyan_dmitry_lab_3/order-service/src/test/java/ru/services/order/ProductApplicationTests.java

@@ -0,0 +1,8 @@
+package ru.services.order;
+
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ProductApplicationTests {
+
+}

arutunyan_dmitry_lab_3/product-service/.gitignore

@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

arutunyan_dmitry_lab_3/product-service/Dockerfile

@@ -0,0 +1,7 @@
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./product-service/build/libs/product-service-0.0.1-SNAPSHOT.jar /app/product-service-0.0.1-SNAPSHOT.jar
+EXPOSE 8080
+
+CMD ["java", "-jar", "product-service-0.0.1-SNAPSHOT.jar"]

arutunyan_dmitry_lab_3/product-service/build.gradle

@@ -0,0 +1,38 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.1.5'
+	id 'io.spring.dependency-management' version '1.1.3'
+}
+
+group = 'com.ulstu'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	sourceCompatibility = '17'
+}
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-devtools'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.0.3'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'org.postgresql:postgresql'
+	annotationProcessor 'org.projectlombok:lombok'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

arutunyan_dmitry_lab_3/product-service/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

arutunyan_dmitry_lab_3/product-service/gradlew

@@ -0,0 +1,249 @@
+#!/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/HEAD/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
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$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
+
+
+# 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"'
+
+# 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 "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# 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 "$JAVACMD" "$@"

arutunyan_dmitry_lab_3/product-service/gradlew.bat

@@ -0,0 +1,92 @@
+@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=.
+@rem This is normally unused
+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% equ 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% equ 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!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

arutunyan_dmitry_lab_3/product-service/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'product-service'

arutunyan_dmitry_lab_3/product-service/src/main/java/ru/services/product/ProductApplication.java

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

arutunyan_dmitry_lab_3/product-service/src/main/java/ru/services/product/controller/ProductController.java

@@ -0,0 +1,48 @@
+package ru.services.product.controller;
+
+import ru.services.product.dto.ProductDto;
+import ru.services.product.model.Product;
+import ru.services.product.service.ProductService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/product")
+@RequiredArgsConstructor
+public class ProductController {
+    private final ProductService productService;
+
+    @GetMapping("/")
+    public List<Product> getProducts() {
+        return productService.findAllProducts();
+    }
+
+    @GetMapping("/{id}")
+    public Product getProduct(@PathVariable int id) {
+        return productService.findProduct(id);
+    }
+
+    @GetMapping("/ord/{id}")
+    public List<Product> getOrderProducts(@PathVariable int id) {
+        return productService.findOrderProducts(id);
+    }
+
+    @PostMapping("/")
+    public Product createProduct(@RequestBody ProductDto productDto)
+    {
+        return productService.addProduct(productDto);
+    }
+
+    @PutMapping("/")
+    public Product updateProduct(@RequestBody ProductDto productDto)
+    {
+        return productService.updateProduct(productDto);
+    }
+
+    @DeleteMapping("/{id}")
+    public void deleteProduct(@PathVariable int id) {
+        productService.deleteProduct(id);
+    }
+}

arutunyan_dmitry_lab_3/product-service/src/main/java/ru/services/product/dto/ProductDto.java

@@ -0,0 +1,13 @@
+package ru.services.product.dto;
+
+import jakarta.annotation.Nullable;
+import lombok.Data;
+
+@Data
+public class ProductDto {
+    private int id;
+    private String name;
+    private int price;
+    @Nullable
+    private Integer order_id;
+}

arutunyan_dmitry_lab_3/product-service/src/main/java/ru/services/product/model/Product.java

@@ -0,0 +1,21 @@
+package ru.services.product.model;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+@Entity
+@Table(name = "t_product")
+@Data
+@Accessors(chain = true)
+public class Product {
+
+    @Id
+    private Integer id;
+    private String name;
+    private Integer price;
+    private Integer order_id;
+}

arutunyan_dmitry_lab_3/product-service/src/main/java/ru/services/product/repository/ProductRepository.java

@@ -0,0 +1,8 @@
+package ru.services.product.repository;
+
+import ru.services.product.model.Product;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ProductRepository extends JpaRepository<Product, Integer> {
+
+}

arutunyan_dmitry_lab_3/product-service/src/main/java/ru/services/product/service/ProductService.java

@@ -0,0 +1,54 @@
+package ru.services.product.service;
+
+import ru.services.product.dto.ProductDto;
+import ru.services.product.model.Product;
+import ru.services.product.repository.ProductRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+public class ProductService {
+
+    private final ProductRepository productRepository;
+    private static int counter = 3;
+
+    public List<Product> findAllProducts() {
+        return productRepository.findAll();
+    }
+
+    public Product findProduct(int id) {
+        return productRepository.findById(id).orElseThrow();
+    }
+
+    public List<Product> findOrderProducts(int order_id) {
+        return productRepository.findAll().stream()
+                .filter(product -> product.getOrder_id() != null)
+                .filter(product -> product.getOrder_id() == order_id)
+                .toList();
+    }
+
+    public Product addProduct(ProductDto productDto) {
+        Product product = new Product();
+        product.setId(counter++);
+        product.setName(productDto.getName());
+        product.setPrice(productDto.getPrice());
+        return productRepository.save(product);
+    }
+
+    public Product updateProduct(ProductDto productDto) {
+        Product product = productRepository.findById(productDto.getId()).orElseThrow();
+        product.setName(productDto.getName());
+        product.setPrice(productDto.getPrice());
+        if (productDto.getOrder_id() != null) {
+            product.setOrder_id(productDto.getOrder_id());
+        }
+        return productRepository.save(product);
+    }
+
+    public void deleteProduct(int id) {
+        productRepository.delete(productRepository.findById(id).orElseThrow());
+    }
+}

arutunyan_dmitry_lab_3/product-service/src/main/resources/application.yaml

@@ -0,0 +1,7 @@
+server:
+  port: "8080"
+spring:
+  datasource:
+    url: jdbc:postgresql://db-market-api:5432/market-api
+    username: admin
+    password: admin

arutunyan_dmitry_lab_3/product-service/src/test/java/ru/services/product/ProductApplicationTests.java

@@ -0,0 +1,9 @@
+package ru.services.product;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ProductApplicationTests {
+
+}