Customer Service

Customer Service, providing REST endpoints for creating/updating/retrieving/deleting customers. It also publishes three types of events to order-service:

• 1. CustomerWasCreated
• 2. CustomerWasUpdated
• 3. CustomerWasDeleted

• A. Prerequisites

  • 1. Windows/Linux based operating system
  • 2. Java 11
  • 3. Dapr CLI (follow instructions on https://docs.dapr.io/getting-started/)
  • 4. Docker (follow instructions on https://docs.docker.com/get-docker/)
  • 5. Database has been created or assuming using an in-memory database for testing purpose.

• B. Getting Started & Run the Application

  • 1. Clone the git repo in to your local directory from the github repository
  • 2. Open the command prompt and navigate to the main project directory.
  • 3. Copy mssql.jks file located under rest-controller submodule to under "tmp" directory on your local env. Empty file merely for local testing purpose.

• ** Run Application on Local Docker Containers**

  • 1. Build the application:
       • mvn clean install
  • 2. Run the application with Dapr as sidecar WITH docker container:
       • docker-compose up --build
  • 3. Tear down the app after running the app (warning: this will delete the contents of your app's database):
       • docker-compose down
  • 4. If you don't have Docker installed locally, run the application with Dapr as sidecar locally WITHOUT docker container:
       • dapr run --components-path ./dapr-components --app-id customer-service --app-port 9100 -- java -jar rest-controller/target/customer-service-0.0.1-SNAPSHOT-exec.jar -p 9100

• C. Project Code Modules

  • config - Spring Configuration classes for all of the modules.
  • dapr-components - dapr components files for pubsub.
  • data - Contains domain data shared with other applications such as rest-api, events etc.
  • persistence - Responsible for hosting the Entities and Repositories for the database.
  • qa - Integration/Functional Tests.
  • rest-controller - REST Endpoints for the application.
  • service - Contains business logic for the application.

• D. Application Launch

  • web: http://localhost:9100/swagger-ui.html

PubSub

For testing purpose, we are using EMQ X MQTT public broker https://www.emqx.io/mqtt/public-mqtt5-broker.