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Containerized App and DB #1

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8 changes: 8 additions & 0 deletions .env
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@CodelineAtyab CodelineAtyab Aug 8, 2024

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For review purposes it's fine, but we should never push the changes with a .env file. The reason is that, this .env is environment specific. On our PC there might be a MySQL server running locally with a different username and password.
Similarly, Another team member may spin up a container and point to a MySQL server running on cloud.

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SPRING_DATASOURCE_URL=jdbc:mysql://mysql-cont:3306/usersystem?useSSL=false&serverTimezone=UTC&createDatabaseIfNotExist=true&allowPublicKeyRetrieval=true
SPRING_DATASOURCE_USERNAME=root
SPRING_DATASOURCE_PASSWORD=root
SPRING_JPA_HIBERNATE_DDL_AUTO=update
SPRING_JPA_SHOW_SQL=true

MYSQL_ROOT_PASSWORD=root
MYSQL_DATABASE=usersystem
29 changes: 29 additions & 0 deletions Dockerfile
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# Use the Maven OpenJDK image as the base image
FROM maven:3.8.1-openjdk-17 AS build

# Set the working directory
WORKDIR /app

# Copy the pom.xml and the project source code
COPY pom.xml .
COPY src ./src
COPY .env .
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@CodelineAtyab CodelineAtyab Aug 8, 2024

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is there a need to copy this .env file inside the container ?. Copying the .env file in the container might not have any benefit.
We have to specify the env file when we run a container directly using docker run OR through docker-compose.
Please provide clarification


# Package the application
RUN mvn clean package -DskipTests

# Use the official OpenJDK image to run the application
FROM openjdk:17-jdk-slim

# Set the working directory
WORKDIR /app

# Copy the packaged jar file from the build stage
COPY --from=build /app/target/rihal-0.0.1-SNAPSHOT.jar .
COPY --from=build /app/.env .

# Expose the port the application runs on
EXPOSE 8080

# Run the application with .env variables
ENTRYPOINT ["sh", "-c", "java -jar rihal-0.0.1-SNAPSHOT.jar"]
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@CodelineAtyab CodelineAtyab Aug 8, 2024

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Is there any benefit of running java through "sh" and not directly using ENTRYPOINT ["java", "-jar", "/app/your-application.jar"] ?

25 changes: 25 additions & 0 deletions docker-compose.yaml
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version: '3.8'

services:
mysql:
image: mysql:8.0
container_name: mysql-cont
env_file:
- .env
ports:
- "3307:3306"
volumes:
- db_data:/var/lib/mysql

app:
build: .
container_name: userinfoapp
env_file:
- .env
ports:
- "8080:8080"
depends_on:
- mysql

volumes:
db_data:
10 changes: 5 additions & 5 deletions pom.xml
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Expand Up @@ -42,21 +42,22 @@
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>

<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<scope>runtime</scope>
</dependency>


<dependency>
<groupId>io.github.cdimascio</groupId>
<artifactId>java-dotenv</artifactId>
<version>5.2.2</version>
</dependency>
</dependencies>

<build>
Expand All @@ -67,5 +68,4 @@
</plugin>
</plugins>
</build>

</project>
14 changes: 11 additions & 3 deletions src/main/java/com/docker/rihal/RihalApplication.java
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package com.docker.rihal;

import io.github.cdimascio.dotenv.Dotenv;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class RihalApplication {

public static void main(String[] args) {
SpringApplication.run(RihalApplication.class, args);
}
public static void main(String[] args) {
// Load environment variables from .env file
Dotenv dotenv = Dotenv.load();
System.setProperty("SPRING_DATASOURCE_URL", dotenv.get("SPRING_DATASOURCE_URL"));
System.setProperty("SPRING_DATASOURCE_USERNAME", dotenv.get("SPRING_DATASOURCE_USERNAME"));
System.setProperty("SPRING_DATASOURCE_PASSWORD", dotenv.get("SPRING_DATASOURCE_PASSWORD"));
System.setProperty("SPRING_JPA_HIBERNATE_DDL_AUTO", dotenv.get("SPRING_JPA_HIBERNATE_DDL_AUTO"));
System.setProperty("SPRING_JPA_SHOW_SQL", dotenv.get("SPRING_JPA_SHOW_SQL"));
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@CodelineAtyab CodelineAtyab Aug 8, 2024

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Is this really needed ?
application.properties are reading the environment variables exposed by the container and setting it.
This happens when we do docker-compose up


SpringApplication.run(RihalApplication.class, args);
}
}
9 changes: 9 additions & 0 deletions target/classes/application.properties
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spring.application.name=rihal
spring.datasource.url=${SPRING_DATASOURCE_URL}
spring.datasource.username=${SPRING_DATASOURCE_USERNAME}
spring.datasource.password=${SPRING_DATASOURCE_PASSWORD}
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

17 changes: 17 additions & 0 deletions target/classes/templates/edit_user.html
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<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Edit User</title>
</head>
<body>
<h1>Edit User</h1>
<form action="#" th:action="@{/users/{id}(id=${user.id})}" th:object="${user}" method="post">
<label>Name: </label>
<input type="text" th:field="*{name}" /><br>
<label>Email: </label>
<input type="email" th:field="*{email}" /><br>
<button type="submit">Save</button>
</form>
</body>
</html>
32 changes: 32 additions & 0 deletions target/classes/templates/index.html
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<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>User Management</title>
</head>
<body>
<h1>User Management</h1>
<a href="/users/new">Add New User</a>
<table>
<thead>
<tr>
<th>ID</th>
<th>Name</th>
<th>Email</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
<tr th:each="user : ${users}">
<td th:text="${user.id}"></td>
<td th:text="${user.name}"></td>
<td th:text="${user.email}"></td>
<td>
<a th:href="@{/users/edit/{id}(id=${user.id})}">Edit</a>
<a th:href="@{/users/delete/{id}(id=${user.id})}">Delete</a>
</td>
</tr>
</tbody>
</table>
</body>
</html>
17 changes: 17 additions & 0 deletions target/classes/templates/new_user.html
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<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Add New User</title>
</head>
<body>
<h1>Add New User</h1>
<form action="#" th:action="@{/users}" th:object="${user}" method="post">
<label>Name: </label>
<input type="text" th:field="*{name}" /><br>
<label>Email: </label>
<input type="email" th:field="*{email}" /><br>
<button type="submit">Save</button>
</form>
</body>
</html>
3 changes: 3 additions & 0 deletions target/maven-archiver/pom.properties
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artifactId=rihal
groupId=com.docker
version=0.0.1-SNAPSHOT
5 changes: 5 additions & 0 deletions target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
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com\docker\rihal\repositories\UserRepository.class
com\docker\rihal\services\UserService.class
com\docker\rihal\controllers\UserController.class
com\docker\rihal\RihalApplication.class
com\docker\rihal\models\User.class
5 changes: 5 additions & 0 deletions target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
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C:\Users\EtharAlAasmi\TrainingChallenge\UserInfoStoreApp\src\main\java\com\docker\rihal\controllers\UserController.java
C:\Users\EtharAlAasmi\TrainingChallenge\UserInfoStoreApp\src\main\java\com\docker\rihal\models\User.java
C:\Users\EtharAlAasmi\TrainingChallenge\UserInfoStoreApp\src\main\java\com\docker\rihal\repositories\UserRepository.java
C:\Users\EtharAlAasmi\TrainingChallenge\UserInfoStoreApp\src\main\java\com\docker\rihal\RihalApplication.java
C:\Users\EtharAlAasmi\TrainingChallenge\UserInfoStoreApp\src\main\java\com\docker\rihal\services\UserService.java
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