Add RabbitMQ support with Spring Cloud

Overview of the issue

Currently, when a developer wants to use Spring cloud the default choice Apache Kafka as message broker. By default, Spring Cloud provides 2 binders: Kafka and RabbitMQ.

Kafka is an excellent Message broker but it’s overkill for small projects. Plus, it requires to manage zookeeper which is yet another component to maintain. RabbitMQ is a first-class message broker well known on the market.

Motivation for or Use Case

Reproduce the error

Related issues

Suggest a Fix

Most of the job is already done, after a first look it’s all about providing the appropriate dependencies and a bit of YAML config (< 10 lines of code).

JHipster Version(s)

JHipster configuration

Entity configuration(s) entityName.json files generated in the .jhipster directory

Browsers and Operating System

• Checking this box is mandatory (this is just to show you read everything)

[danielpetisme]

@PierreBesson hsa promised I made a sample app with RabbitMq https://github.com/danielpetisme/jhipster-sample-app-rabbitmq

You’ll find 2 branches, master is the init of a monolith with Kafka support, binder-rabbit is … the rabbitmq adapatation. The diff: https://github.com/danielpetisme/jhipster-sample-app-rabbitmq/compare/master...rabbit-binder

I made a REST Endpoint /api/messages,

• A producer sends the message in JSON format to a topic-jhipster destination
• A consumer reads the message from the topic-jhipster destination and save it into a list I’ve added a rabbit routing key just for the sake of demo

[danielpetisme]

@deepu105 👍 Module or your external templates proposal could be next big architecture choice IMHO but it requires a core team decision. Without adopting an Apache or JavaEE (RIP) approach Jhipster could be a kind of meta-blueprint and core-team supported minimal feature. JHipster == orchestration between client, server, docker, db etc. and module are Angular, Spring, MongoDB, etc. Each module would be responsible of it’s integration. Rather than having a huge central code generator and a lof of ifs.

Anyway, It’s not the purpose of this issue (even if it’s an interesting topic) so let’s close it right now I gave @PierreBesson a sample app we’ll see in the future months how things are moving forward.