accounting-engine

A prototype for an accounting engine that processes transactions and handles disputes and chargebacks.

Build from source

cargo build

Usage

cargo run -- transactions.csv

The binary takes a csv file as a parameter and outputs the final account balances in csv format onto the standard output.

The csv file has the following columns:

• type Transaction Type (String): deposit, withdrawal, dispute, resolve, chargeback. Only deposit and withdrawal specify their own tx id and amount. Every other type specifies the tx id they refer to and no amount
• client Client Id (u16): A globally unique identifier for the client account
• tx Transaction Id (u32): A globally unique identifier for the transaction
• amount Transaction Amount (decimal)

Transactions that can be parsed but are invalid will be ignored by the engine.

The produced account balances have the following columns:

• client Client Id (u16)
• available Available Funds (decimal)
• held Funds in Dispute (decimal)
• total=available+held (decimal)
• locked If the Account is frozen which happens after a chargeback (bool)

Testing

cargo test

Tests the core accounting engine.