tx-processor

Simple transaction processor in Rust.

Implementation details

Errors encountered when processing transactions are currently logged to stderr, but are not acted upon, or logged to a log file for inspection.
Errors in the formatting of the CSV file containing the transactions are currently not handled.
The records in the transactions CSV file are read using csv::Reader::deserialize. The buffer size used by the csv::Reader can be configured using the buffer_capacity function, but the default value is being used at the moment. Benchmarking could determine if a different value is more appropriate.
The transaction processing functions are currently not thread-safe.
Atomicity is currently not guaranteed during transaction processing, but the critical sections have been identified in the code.
Decimal precision is currently configured to 4 digits, but can be changed using the DECIMAL_PRECISION const.
At the moment, accounts that are locked will no longer process transactions.

tx-processor transactions.csv

The state of all the accounts will be printed to stdout. Errors encountered while processing transactions will be printed to stderr.