podkorytova_yulia_lab_3 is ready #99

Merged
Alexey merged 1 commits from podkorytova_yulia_lab_3 into main 2024-01-10 11:01:51 +04:00
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# Лабораторная работа 3. REST API, Gateway и синхронный обмен между микросервисами
### Задание на лабораторную работу
1. Создать 2 микросервиса, реализующих CRUD на связанных сущностях.
2. Реализовать механизм синхронного обмена сообщениями между микросервисами.
3. Реализовать шлюз на основе прозрачного прокси-сервера nginx.
***
### Как запустить лабораторную работу
Для сборки и запуска программ необходимо перейти в директорию с файлом `docker-compose.yaml` и выполнить команду:
```
docker-compose up -d
```
***
### Описание работы
Были созданы два микросервиса на *java*, каждый реализует CRUD-операции: список записей, подробности конкретной записи, создание, удаление и изменение записи.
Микросервисы реализованы при помощи фреймворка *spring*.
**Описание сущностей:**
- *user* - пользователь. Поля: *id* (уникальный идентификатор пользователя), *fullName* (ФИО), *phoneNumber* (номер телефона), *role* (роль - ученик/репетитор).
- *message* - сообщение. Поля: *id* (уникальный идентификатор сообщения), *text* (текст), *status* (статус - отправлено/получено/прочитано), *date* (дата отправки), *userId* (id пользователя).
Сущности связаны отношением один-ко-многим (пользователь-сообщения).
**Реализация синхронного обмена:**
Синхронный обмен между сообщениями реализуется при помощи RestTemplate.
При получении информации о сообщении через GET запрос к user-service получаются данные о пользователе-отправителе сообщения.
Пример реализации при получении записи о сообщении в `MessageService`:
```
private final MessageRepository messageRepository;
private final RestTemplate restTemplate;
private final String URL = "http://user-service:8085/user/";
@Autowired
public MessageService(MessageRepository messageRepository, RestTemplate restTemplate) {
this.messageRepository = messageRepository;
this.restTemplate = restTemplate;
}
@Transactional(readOnly = true)
public MessageWithUserInfoDto findMessage(Long id) {
final Message message = messageRepository.findById(id).orElse(null);
if (message == null) {
throw new MessageNotFoundException(id);
}
UserInfoDto userInfo = restTemplate.getForObject(URL + message.getUserId(), UserInfoDto.class);
return new MessageWithUserInfoDto(message, userInfo);
}
```
**Dockerfile**
Используется базовый образ *openjdk:17-jdk*, на основе которого будет создан контейнер.
Внутри контейнера создается директория `/usr/src/app/`, после устанавливается рабочая директория и файлы из каталога, где находится Dockerfile, копируются внутрь контейнера в директорию `/usr/src/app/`.
Выполняется сборка проекта с помощью инструмента gradlew. Задается порт и указывается точка входа для контейнера. Запуск java-приложения осуществляется посредством запуска jar-файла.
Содержимое `Dockerfile` для сервиса `user-service`:
```
FROM openjdk:17
RUN mkdir -p /usr/src/app/
WORKDIR /usr/src/app/
COPY . /usr/src/app/
RUN ./gradlew clean build
EXPOSE 8085
ENTRYPOINT ["java","-jar","build/libs/user-service-1.0-SNAPSHOT.jar"]
```
Аналогично был составлен `Dockerfile` для сервиса `message-service`.
**Файл конфигурации nginx.conf**
Файл `nginx.conf` содержит конфигурацию для сервера *nginx*.
Конфигурация позволяет перенаправлять запросы, начинающиеся с /user-service/ на сервер user-service на порту 8085, а запросы, начинающиеся с /message-service/, на сервер message-service на порту 8086.
```
server {
listen 80;
listen [::]:80;
server_name localhost;
location /user-service/ {
proxy_pass http://user-service:8085/;
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 /user-service;
}
location /message-service/ {
proxy_pass http://message-service:8086/;
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 /message-service;
}
}
```
**Файл конфигурации docker-compose.yml**
В файле `docker-compose.yml` указана версия синтаксиса *Docker Compose*, определен список сервисов, которые будут развернуты в приложении, и определена сеть с именем "network", которая будет использоваться для связи между контейнерами.
Файл определяет три сервиса: *user-service*, *message-service* и *nginx*. Для сервисов user-service и message-service используются образы приложений, созданные при помощи Dockerfile.
Сервис *nginx* использует образ *nginx*.
Параметр *depends_on* определяет зависимости сервисов (*nginx* зависит от сервисов *user-service* и *message-service* и разворачивается только после их запуска), в *ports* настраивается проброс портов.
```
version: '3'
services:
user-service:
build:
context: /user-service
dockerfile: Dockerfile
ports:
- 8085:8085
networks:
- network
message-service:
build:
context: /message-service
dockerfile: Dockerfile
ports:
- 8086:8086
networks:
- network
nginx:
image: nginx
ports:
- 8087:80
networks:
- network
volumes:
- ./nginx-conf:/etc/nginx/conf.d
depends_on:
- user-service
- message-service
networks:
network:
driver: bridge
```
***
### Скриншоты
***Результаты сборки и запуска программ в консоли***
![](images/console.jpg)
***Образы в Dockerhub***
![](images/dockerhub1.jpg)
***Контейнеры в Dockerhub***
![](images/dockerhub2.jpg)
***Информация по пользователю***
![](images/user.jpg)
***Информация по сообщению***
![](images/message.jpg)
### Ссылка на видео:
https://drive.google.com/file/d/19pw4LWiuzK2tDHlSSbKbxNWPsvbUzWwd/view?usp=sharing

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version: '3'
services:
user-service:
build:
context: /user-service
dockerfile: Dockerfile
ports:
- 8085:8085
networks:
- network
message-service:
build:
context: /message-service
dockerfile: Dockerfile
ports:
- 8086:8086
networks:
- network
nginx:
image: nginx
ports:
- 8087:80
networks:
- network
volumes:
- ./nginx-conf:/etc/nginx/conf.d
depends_on:
- user-service
- message-service
networks:
network:
driver: bridge

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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/

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FROM openjdk:17
RUN mkdir -p /usr/src/app/
WORKDIR /usr/src/app/
COPY . /usr/src/app/
RUN ./gradlew clean build
EXPOSE 8086
ENTRYPOINT ["java","-jar","build/libs/message-service-1.0-SNAPSHOT.jar"]

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plugins {
id 'org.springframework.boot' version '2.6.3'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group 'com.example'
version '1.0-SNAPSHOT'
sourceCompatibility = '17'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-devtools'
implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect'
implementation 'org.webjars:bootstrap:5.1.3'
implementation 'org.webjars:jquery:3.6.0'
implementation 'org.webjars:font-awesome:6.1.0'
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'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
implementation group: 'org.springdoc', name: 'springdoc-openapi-ui', version: '1.6.5'
}
tasks.named('test') {
useJUnitPlatform()
}

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#!/usr/bin/env sh
#
# Copyright 2015 the original author or 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 UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MSYS* | MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$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" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

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

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rootProject.name = 'message-service'

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package com.example.app;
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 MessageApp {
public static void main(String[] args) {
SpringApplication.run(MessageApp.class, args);
}
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}

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package com.example.app.controller;
import com.example.app.dto.MessageDto;
import com.example.app.dto.MessageWithUserInfoDto;
import com.example.app.service.MessageService;
import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
import java.util.*;
import java.util.stream.*;
@RestController
@RequestMapping("/message")
public class MessageController {
private final MessageService messageService;
public MessageController(MessageService messageService) {
this.messageService = messageService;
}
@GetMapping("/")
public List<MessageDto> getMessages() {
return messageService.findAllMessages().stream()
.map(MessageDto::new)
.collect(Collectors.toList());
}
@GetMapping("/{id}")
public MessageWithUserInfoDto getMessage(@PathVariable Long id) {
return messageService.findMessage(id);
}
@PostMapping("/")
public MessageDto createMessage(@RequestBody @Valid MessageDto messageDto) {
return messageService.addMessage(messageDto);
}
@PutMapping("/{id}")
public MessageDto updateMessage(@RequestBody @Valid MessageDto messageDto) {
return messageService.updateMessage(messageDto);
}
@DeleteMapping("/{id}")
public MessageDto deleteMessage(@PathVariable Long id) {
return messageService.deleteMessage(id);
}
}

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package com.example.app.dto;
import com.example.app.model.Message;
import java.sql.Date;
import lombok.Data;
@Data
public class MessageDto {
private Long id;
private String text;
private String status;
private Date date;
private Long userId;
public MessageDto() {
}
public MessageDto(Message message) {
this.id = message.getId();
this.text = message.getText();
this.status = message.getStatus();
this.date = message.getDate();
this.userId = message.getUserId();
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
}

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package com.example.app.dto;
import com.example.app.model.Message;
import lombok.Data;
import java.sql.Date;
@Data
public class MessageWithUserInfoDto {
private Long id;
private String text;
private String status;
private Date date;
private Long userId;
private UserInfoDto userInfo;
public MessageWithUserInfoDto() {
}
public MessageWithUserInfoDto(Message message, UserInfoDto userInfo) {
this.id = message.getId();
this.text = message.getText();
this.status = message.getStatus();
this.date = message.getDate();
this.userId = message.getUserId();
this.userInfo = userInfo;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
}

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package com.example.app.dto;
import lombok.Data;
@Data
public class UserInfoDto {
private Long id;
private String fullName;
private String phoneNumber;
private String role;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
}

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package com.example.app.model;
import javax.persistence.*;
import java.sql.Date;
@Entity
@Table(name="messages")
public class Message {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String text;
private String status;
private Date date;
private Long userId;
public Message() {
}
public Message(String text, String status, Date date, Long userId) {
this.text = text;
this.status = status;
this.date = date;
this.userId = userId;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
@Override
public String toString() {
return "Message{" +
"id=" + id +
", text='" + text + '\'' +
", status='" + status + '\'' +
", date='" + date + '\'' +
", userId='" + userId + '\'' +
'}';
}
}

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@ -0,0 +1,7 @@
package com.example.app.repository;
import com.example.app.model.Message;
import org.springframework.data.jpa.repository.JpaRepository;
public interface MessageRepository extends JpaRepository<Message, Long> {
}

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

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@ -0,0 +1,70 @@
package com.example.app.service;
import com.example.app.dto.*;
import com.example.app.model.Message;
import com.example.app.repository.MessageRepository;
import org.springframework.beans.factory.annotation.*;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.client.RestTemplate;
import java.util.*;
@Service
public class MessageService {
private final MessageRepository messageRepository;
private final RestTemplate restTemplate;
private final String URL = "http://user-service:8085/user/";
@Autowired
public MessageService(MessageRepository messageRepository, RestTemplate restTemplate) {
this.messageRepository = messageRepository;
this.restTemplate = restTemplate;
}
@Transactional(readOnly = true)
public MessageWithUserInfoDto findMessage(Long id) {
final Message message = messageRepository.findById(id).orElse(null);
if (message == null) {
throw new MessageNotFoundException(id);
}
UserInfoDto userInfo = restTemplate.getForObject(URL + message.getUserId(), UserInfoDto.class);
return new MessageWithUserInfoDto(message, userInfo);
}
@Transactional
public MessageDto addMessage(MessageDto messageDto) {
final Message message = new Message(messageDto.getText(), messageDto.getStatus(), messageDto.getDate(), messageDto.getUserId());
messageRepository.save(message);
return new MessageDto(message);
}
@Transactional(readOnly = true)
public Message findMessageWithoutUserInfo(Long id) {
final Optional<Message> message = messageRepository.findById(id);
return message.orElseThrow(() -> new MessageNotFoundException(id));
}
@Transactional(readOnly = true)
public List<Message> findAllMessages() {
return messageRepository.findAll();
}
@Transactional
public MessageDto updateMessage(MessageDto messageDto) {
final Message message = findMessageWithoutUserInfo(messageDto.getId());
message.setText(messageDto.getText());
message.setStatus(messageDto.getStatus());
message.setDate(messageDto.getDate());
message.setUserId(messageDto.getUserId());
messageRepository.save(message);
return new MessageDto(message);
}
@Transactional
public MessageDto deleteMessage(Long id) {
final Message message = findMessageWithoutUserInfo(id);
messageRepository.delete(message);
return new MessageDto(message);
}
}

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spring.main.banner-mode=off
server.port=8086
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

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@ -0,0 +1,21 @@
server {
listen 80;
listen [::]:80;
server_name localhost;
location /user-service/ {
proxy_pass http://user-service:8085/;
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 /user-service;
}
location /message-service/ {
proxy_pass http://message-service:8086/;
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 /message-service;
}
}

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@ -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/

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@ -0,0 +1,7 @@
FROM openjdk:17
RUN mkdir -p /usr/src/app/
WORKDIR /usr/src/app/
COPY . /usr/src/app/
RUN ./gradlew clean build
EXPOSE 8085
ENTRYPOINT ["java","-jar","build/libs/user-service-1.0-SNAPSHOT.jar"]

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@ -0,0 +1,40 @@
plugins {
id 'org.springframework.boot' version '2.6.3'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group 'com.example'
version '1.0-SNAPSHOT'
sourceCompatibility = '17'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-devtools'
implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect'
implementation 'org.webjars:bootstrap:5.1.3'
implementation 'org.webjars:jquery:3.6.0'
implementation 'org.webjars:font-awesome:6.1.0'
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'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
}
tasks.named('test') {
useJUnitPlatform()
}

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@ -0,0 +1,185 @@
#!/usr/bin/env sh
#
# Copyright 2015 the original author or 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 UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MSYS* | MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$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" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

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

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

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@ -0,0 +1,11 @@
package com.example.app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class UserApp {
public static void main(String[] args) {
SpringApplication.run(UserApp.class, args);
}
}

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@ -0,0 +1,46 @@
package com.example.app.controller;
import com.example.app.dto.UserDto;
import com.example.app.service.UserService;
import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
import java.util.*;
import java.util.stream.Collectors;
@RestController
@RequestMapping("/user")
public class UserController {
private final UserService userService;
public UserController(UserService userService) {
this.userService = userService;
}
@GetMapping("/")
public List<UserDto> getUsers() {
return userService.findAllUsers().stream()
.map(UserDto::new)
.collect(Collectors.toList());
}
@GetMapping("/{id}")
public UserDto getUser(@PathVariable Long id) {
return new UserDto(userService.findUser(id));
}
@PostMapping("/")
public UserDto createUser(@RequestBody @Valid UserDto userDto) {
return new UserDto(userService.addUser(userDto));
}
@PutMapping("/{id}")
public UserDto updateUser(@RequestBody @Valid UserDto userDto) {
return new UserDto(userService.updateUser(userDto));
}
@DeleteMapping("/{id}")
public UserDto deleteUser(@PathVariable Long id) {
return new UserDto(userService.deleteUser(id));
}
}

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@ -0,0 +1,54 @@
package com.example.app.dto;
import com.example.app.model.User;
import lombok.Data;
@Data
public class UserDto {
private Long id;
private String fullName;
private String phoneNumber;
private String role;
public UserDto() {
}
public UserDto(User user) {
this.id = user.getId();
this.fullName = user.getFullName();
this.phoneNumber = user.getPhoneNumber();
this.role = user.getRole();
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
}

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@ -0,0 +1,65 @@
package com.example.app.model;
import javax.persistence.*;
@Entity
@Table(name="users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String fullName;
private String phoneNumber;
private String role;
public User() {
}
public User(String fullName, String phoneNumber, String role) {
this.fullName = fullName;
this.phoneNumber = phoneNumber;
this.role = role;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", fullName='" + fullName + '\'' +
", phoneNumber='" + phoneNumber + '\'' +
", role='" + role + '\'' +
'}';
}
}

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@ -0,0 +1,7 @@
package com.example.app.repository;
import com.example.app.model.User;
import org.springframework.data.jpa.repository.JpaRepository;
public interface UserRepository extends JpaRepository<User, Long> {
}

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

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@ -0,0 +1,51 @@
package com.example.app.service;
import com.example.app.dto.UserDto;
import com.example.app.model.User;
import com.example.app.repository.UserRepository;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.*;
@Service
public class UserService {
private final UserRepository userRepository;
public UserService(UserRepository userRepository) {
this.userRepository = userRepository;
}
@Transactional
public User addUser(UserDto userDto) {
final User user = new User(userDto.getFullName(), userDto.getPhoneNumber(), userDto.getRole());
return userRepository.save(user);
}
@Transactional(readOnly = true)
public User findUser(Long id) {
final Optional<User> user = userRepository.findById(id);
return user.orElseThrow(() -> new UserNotFoundException(id));
}
@Transactional(readOnly = true)
public List<User> findAllUsers() {
return userRepository.findAll();
}
@Transactional
public User updateUser(UserDto userDto) {
final User currentUser = findUser(userDto.getId());
currentUser.setFullName(userDto.getFullName());
currentUser.setPhoneNumber(userDto.getPhoneNumber());
currentUser.setRole(userDto.getRole());
return userRepository.save(currentUser);
}
@Transactional
public User deleteUser(Long id) {
final User currentUser = findUser(id);
userRepository.delete(currentUser);
return currentUser;
}
}

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@ -0,0 +1,11 @@
spring.main.banner-mode=off
server.port=8085
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