#Messenger

A sample spring-boot application using kotlin, rabbitmq and postgresql. Application allows sending messages between defined users. Messages are routed through RabbitMQ and stored in PostgreSQL database.

Application exposes five endpoints:

• GET /message/{user}/sent
• GET /message/{user}/received
• GET /message/{user}/received/from/{sender}
• POST /message/{user}/send
• POST /user/{user}

The project was built and tested using java version 15. Besides java, maven is needed to build. Maven version 3.6.3 was used to build.

Run the unit and integration tests with the following command:

./mvnw clean verify

Run the following instructions to build and run from a source:

./mvnw clean install -DskipTests
./mvnw docker:start
./mvnw spring-boot:run

The current implementation is only a draft of the application. Below is a list of improvements that should be made in order for the application to be used for non-educational purposes:

• API versioning
• REST parameters validation
• Security
• Entity extension
• Microservice related patterns like circuits breakers (if the application is to be used as a microservice)
• Containerization
• Profiles (in current implementation application uses only one property set)