A payments system to manage bank accounts with deposit, withdraw, dispute, resolve & chargeback type transactions
The service is being built, linted & tested automatically on each commit with travis-ci
A test coverage report is being generated on the build pipeline with grcov and results of each build can be seen on codecov.io
src
├── account_manager.rs
├── lib.rs
├── main.rs
├── tx_processor.rs
└── tx_stream_reader.rs
The account_manager.rs file contains the logic for processing transaction types.
Tests for the logic of those transactions are included in that file.
The tx_processor.rs contains the logic for reading transactions and pushing them to the account manager.
The tx_stream_reader.rs is reading lines & deserializing into Transaction structs. This gives us a mechanism to process a stream of transactions one by one & avoid loading the whole CSV into memory.
tests
└── integration_test.rs
A simple integration style test is run from integration_test.rs.
This test is ingesting the transactions.csv in the project's root directory & will output a csv to stdout showing the account's latest status
transactions.csv
Some test data manually created to run against the application & integration test.
$ cargo build
$ cargo test
cargo clippy
$ cargo run -- transactions.csv
$ docker build -t bps .
$ docker run -v $(pwd)/transactions.csv:/svc/app/transactions.csv -t bps transactions.csv
Piping stdout to a file will yield a csv showing account status after transaction processing.
$ cargo run -- transactions.csv > out.csv
$ cat out.csv
client,available,held,total,locked
1,1.5,0,1.5,false
2,2,0,2,false
4,2.3422,0.0000,2.3422,true
3,21.5578,0,21.5578,false