Account service

Pre requisites

Docker
Golang v1.14+

Running App

Export DB_PASSWORD export DB_PASSWORD="S3cretP@ssw0rd"
Bring up the mysql container using:

make infra-local

Run the migrations on the local DB

make setup

Build and run the app container.

make app

Inspect logs using docker

docker logs account-service-go -f

Design

Design an event store - credit 2 - expiry t+5 - credit 2 - expiry t+2 - debit 3 -

Check the latest status of the db before the insertion of the DB

Have some checkpoints of the state of the database.

Interpret the state of the system from the credits with expiry - debits.

Assume:

User service exists
	- Prepopulate the user DB with the user data.
- each user has one account only
- expiration is done using the minimum expiry in a group of priorities

Run the queries:

INSERT INTO public.accounts
(id, user_id, balance, created_at, updated_at)
VALUES(gen_random_uuid(), gen_random_uuid(), 0, timezone('utc'::text, now()), timezone('utc'::text, now()));

Verifying the Functionality

Add Balance Request

curl -X POST \
  http://localhost:8888/account/credit \
  -H 'cache-control: no-cache' \
  -H 'content-type: application/json' \
  -d '{ "userId":"a900c144-\-4324-994f-451a7ac9d46d", "amount":2, "type":"subscription", "priority":2, "expiry":1605688837 }'

GET Credit logs request

curl -X GET \
  'http://localhost:8888/account/logs?activity=Credit' \

Debit balance request

curl -X POST \
http://localhost:8888/account/debit \
-H 'content-type: application/json' \
-d '{
    "userId":"a900c144-9f25-4324-994f-451a7ac9d46d",
    "amount":2 
}'

get current balance using

curl -X GET \
  http://localhost:8888/account/a900c144-9f25-4324-994f-451a7ac9d46d \
  -H 'cache-control: no-cache' \

bhaweshksingh / promotional-wallet