PostService2

This is a Spring Boot microservice for posting and retrieving messages. The service uses a MySQL database to store the messages. Prerequisites

Docker
Docker Compose

Getting Started Running with Docker Compose

Create a docker-compose.yaml file:
Create a file named docker-compose.yaml in your desired directory and add the following content:

services: postservice: image: aeldin/postservice2:1.0 container_name: postservice ports:

• "8090:8080" environment: SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/messages SPRING_DATASOURCE_USERNAME: root SPRING_DATASOURCE_PASSWORD: secret depends_on:
• mysql

mysql: image: mysql:latest restart: always environment: MYSQL_ROOT_PASSWORD: secret MYSQL_DATABASE: messages ports:

• "3306:3306"

Run the containers:

docker-compose up

This will pull the aeldin/postservice2:1.0 image from Docker Hub and start both postservice and mysql containers.

Access the Service:
The microservice will be available at http://localhost:8090.

Endpoints

Post a Message:
    URL: http://localhost:8090/api/messages
    Method: POST
    Headers:
        Content-Type: application/json
        userid: <your-username>
    Body (example):

    json

    {
      "receiverUsername": "receiverUser",
      "message": "Hello, World!"
    }

Get a Message by ID:
    URL: http://localhost:8090/api/messages/{id}
    Method: GET

Example Requests Using Insomnia

POST Request:
    URL: http://localhost:8090/api/messages
    Method: POST
    Headers:
        Content-Type: application/json
        userid: someUserId
    Body:

    json

    {
      "receiverUsername": "receiverUser",
      "message": "Hello, World!"
    }

GET Request:
    URL: http://localhost:8090/api/messages/{id}
    Method: GET

Stopping the Services

To stop the running containers, press CTRL+C in the terminal where docker-compose is running. Alternatively, you can run:

docker-compose down

Project Structure

docker-compose.yaml: Docker Compose file to run the postservice and mysql containers.

Configuration

The database connection details are specified in the docker-compose.yaml file.
The application properties are configured in the Docker image.

Database

Image: mysql:latest
Database Name: messages
Username: root
Password: secret

The MySQL database is automatically initialized with the necessary schema when the containers are started.