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Sample application to show the secured integration of microservices and vaadin

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Exemplary application to show the SSO and OAuth2 secured integration of microservices with Spring Cloud and Vaadin. Main concepts in this projects are:

  • Microservices ("Software that Fits in Your Head")
  • Secured Gateway (SSO and OAuth2)
  • Service Discovery
  • Circuit Breaking
  • Shared Session overall Services
  • Event store to fulfill CQRS principles

Architecture:

Architecture

  • Authserver:
    • Authentification and authorization service
    • Allows user login and also user registration via REST
    • Generates spring session (persisted in Redis) which also holds the security context
  • Configserver
    • Centralized configuration of each service
  • Edge:
    • SSO Gateway to Frontend and also directly to the Backend
    • UI for the landing page, the login and the registration panels
    • Gets the security context and the user data from spring session
  • Eventstore:
    • Distribute events across microservices via RabbitMQ and persist them in MongoDB
  • Frontend:
    • Vaadin frontend with some simple but responsive UI
    • Load balanced (Ribbon) access to backend
    • Gets user data from spring session
  • UserService:
    • Represents the user domain
  • Backend:
    • Simple but secured REST resource as backend for the frontend
  • Discovery: service discovery with eureka
  • Turbine+Hystrixdashboard: use hystrix as circuit breaker

ToDo:

  • add a backend service

Main frameworks:

Installation:

  • install JDK 8
  • install Redis+RabbitMQ+MongoDB+MySQL (you can also use the docker-compose.yml file
  • Run gradlew clean build to compile and build the application
  • Run start-all.bat to start the list of services
  • http://localhost should bring you to the landing page (with a redirect to https)

Development:

Set up project:

  • checkout git repository
  • run docker-compose up -d do start dependent Redis, RabbitMQ, MongoDB and MySQL services (also DBs will be added automatically)
  • gradlew clean build to compile project
  • run start-all.bat in windows or start-all.sh in unix

##Deployment:

  • The project could be deployed to a rancher stack using the given rancher-docker-compose.yml. The databases from above also here need to be added manually, here within the execute shell of the MySQL-container. Rancher stack

  • If all works fine (services might need to be restarted) you should see the this landing page: Landing page Initial test credentials then are ttester@test.de/quert6.

  • Fingers crossed.. Finally the Vaadin UI should show up: Vaadin UI