An tiny Interledger ledger implementation in Haskell.
This implementation passes few basic Interledger tests and is work-in-progress. Long-term, it is hopefully going to be fully Interledger-compliant.
Notable differences with the current Ripple reference implementation:
- Only atomic mode is supported although adding universal support should be easy
- Only basic auth is supported
- PUTting a transfer that already exists is not supported and will return an error - not sure what the use case for that feature is
- Configuration through environment variables differs (variables currently used are
LEDGER_AMOUNT_SCALE,LEDGER_BASE_URI,LEDGER_PORT,LEDGER_DB_CONNECTION_STRING,LEDGER_ADMIN_USER,LEDGER_ADMIN_PASSWORD,LEDGER_MONITOR_INTERVAL) - Endpoint
GET /transfers/:id/stateis missing at the moment (what is this used for?) - Only database supported is Postgres but support for MySQL and SqlLite should be straightforward to add
- Only crypto condition currently supported is
PreimageSha256 - For speed, computation on amounts is done internally using 64-bit integers (number are scaled up and down using the
LEDGER_AMOUNT_SCALEparameter and overflow/underflow will throw errors) - Response bodies and http error codes may slightly differ from the reference implementation - this will be fixed soon
- Base64URL padding for crypto conditions may be different