ngandriau / spring-cloud-spring-cloud-playground

spring cloud playground project

• inspired by https://spring.io/guides/gs/routing-and-filtering/
• and developed reading spring micro service in action

Status

• gradle project has 4 modules
  • common a library with common part necessary to every microservice of the project.
  • gateway use Zul to add correlationId to every request.

    • provide routing rules, so other microservice are accessed through it, and the correlation ID is then added.

    • default port: 8080

    • book sample microservice with book/available and book/checked-out rest endpoint.

      • default port: 8090

    • zipkinServer: default port is 9411, should be started first, else lot of exception in app

direct access: http://localhost:8090/available access through gateway: http://localhost:8080/books/available

• correlation id is set as the header: tmx-correlation-id of the request forwarded from gateway to book: RequestFilter

• it is also added in the header of the response by the gateway: ResponseFilter

• !!! Playing with ZipKin is now working, from 1 call to the gateway, I can see the trace up to the book application

Todo

Find how to move spring-dependencie plugin declaration at top gradle project