Saga pattenr in microservice

you can read descriptions in baeldung

The project contains the following subprojects:

1. Gateway-service
2. Discovery-service (combined with Config-service)
3. Auth-service
4. Order-service
5. Payment-service
6. Delivery-service

All services worked as demonstration

Environment

To run PostgreSQL with Kafka you have to execute the command in project root Report-service:

$sudo docker-compose up -d

Also, you have convenient UI for Apache Kafka at URL

http://localhost:9999/

Now you can run application services from your IDE in this order

• Discovery
• Auth-service
• Order-service
• Delivery-service
• Inventory-service
• Payment-service
• Gateway-service

After that you can find Swagger UI of every service at URL.

http://localhost:8080/some-prefix/swagger-ui/index.html

Don't forget to put actual port number and prefix of service

At Gateway, you can find joined Swagger UI http://localhost:9090/swagger-ui.html

Basic interactions

You can use those curl commands, or you can do all that with Swagger UI

Authentication

To create user use this request to auth service

curl -X 'POST' \
  'http://localhost:8083/auth/user/signup' \
  -H 'accept: */*' \
  -H 'Content-Type: application/json' \
  -d '{
  "name": "some_user",
  "password": "some_pass"
}'

After that you can get a token

curl -X 'POST' \
  'http://localhost:8083/auth/auth/token/generate' \
  -H 'accept: */*' \
  -H 'Content-Type: application/json' \
  -d '{
  "name": "some_user",
  "password": "some_pass"
}'

Now you can use this token to authenticate requests to other service

Order service

To create an order you can send POST request:

curl -X 'POST' \
  'http://localhost:9090/api/order' \
  -H 'accept: */*' \
  -H 'Content-Type: application/json' \
  -H 'Bearer <put token here>'
  -d '{
  "description": "string",
  "departureAddress": "string",
  "destinationAddress": "string",
  "cost": 0
}'

You can list orders with GET request:

curl -X 'GET' \
  'http://localhost:9090/api/order' \
  -H 'accept: */*' \
  -H 'Bearer <put token here>'

You can change status of order with PATCH request:

curl -X 'PATCH' \
  'http://localhost:8080/api/order/1' \
  -H 'accept: */*' \
  -H 'Content-Type: application/json' \
  -H 'Bearer <put token here>'
  -d '{
  "status": "REGISTERED",
  "serviceName": "ORDER_SERVICE",
  "comment": "Some comment to status"
}'

Running all services with docker-compose

To run all services with docker-compose use this command

 docker-compose -f docker-compose.yml -f docker-compose.services.yml up -d