Overview

Billing services for car parking slot using microservices

Services:

- Database
- Consumer
- Billing
- Zookeeper
- Broker(Kafka)

Build (Docker)

git clone git@github.com:goakshit/gandalf.git
cd gandalf
docker-compose -f ./build/docker/docker-compose.yaml up -d --build

Docker-compose starts up the services mentioned above.

1. Database(Postgres): Docker container boots up and executes the sql file in ./build/scripts/db which creates the table where data is persisted from kafka.
2. Zookeeper: Runs at port 2181.
3. Broker(Kafka): Exposes 29092(Internal network) & 9092 (Host Network)
4. Consumer: Listens to kafka messages and persists the data in db.
5. Billing: Exposes two api(s) at port 80 -> /api/duration/{id} & /api/cost/{id}. Eg: curl -XGET http://localhost:80/api/duration/5
6. client: Pushes the vehicle information to Kafka. To exec: go run ./cmd/client

Swagger Docs

To generate swagger json: Need to have the swagger CLI then swagger generate spec -o ./swagger.json --scan-models or exec make

Tests

Mocks are added for persistence(DB layer). Tests are added for billing service. To exec: go test ./internal/pkg/billing