A simple transaction processing. A transaction is an action of transferring money from one account to another.

Firstly, the processing owns 1 000 000 000.

When creating a user, he can obtain some money, transferred from the processing account.

A transaction cannot proceed (logical OR):

• sender = receiver;
• any of sender or receiver does not exist;
• the sender does not have enough money;
• the amount of money being transferred is negative;
• when the receiver obtains transaction he would have too much money (more than 9 223 372 036 854 775 807).

Transaction on different accounts are running in parallel. Each has its own queue: there are no conflicting DB locks between DB-transactions that have no common accounts.

• Add tests
• Add specific errors to swagger
• Add authentication and authorization
• Create indices to SQL tables

To read swagger documentation and try requests, run docker-compose, run make run from tx-go container. Docs will be at http://localhost:8081/docs

Run make gen from tx-gen container.

Do not create files restapi/configure_tx.go, restapi/server.go by your own: they are deleted by make gen.

Should be run from tx-go container.

Up:

make migrate.up

Down:

make migrate.down

Status:

make migrate.status

Create new migration with name new123:

make migrate.new migration_name=new123