Axon EDA

This is a sample application to demonstrate Event Driven Architecture using Axon and Spring Boot. It is composed by three (micro) services which exchange information by publishing and subscribing to events. The idea of the example was to implement a "Ratings" app similar to the one featured in the Black Mirror E1S3.

Getting Started

• Ensure Java >= v8.
• Ensure recent Maven.
• Ensure RabbitMQ is running.
• Build and run the 3 services (Users, Ratings, Stats):

$ cd users && mvn install && mvn -Dserver.port=9001 spring-boot:run
$ cd ../ratings && mvn install && mvn -Dserver.port=9002 spring-boot:run
$ cd ../stats && mvn install && mvn -Dserver.port=9003 spring-boot:run

Using The App

The idea behind the Ratings app is that users will rate each other based on their real-world interactions in a scale from 1 to 5 stars.

Sign Up User

$ curl localhost:9001/users/commands/sign-up -X POST \
  --data '{"username": "angoh", "fullname": "Akon Ngoh"}' \
  -H 'Content-Type:application/json'

Fetch Users

$ curl localhost:9001/users/ -H 'Content-Type:application/json'

Add Ratings

$ curl localhost:9002/ratings/commands/add -X POST \
  --data '{"raterUsername":"angoh", "receiverUsername":"vgomes", "stars":3}' \
  -H 'Content-Type:application/json'

Check Stats

$ curl localhost:9003/stats/ -H 'Content-Type:application/json'

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