ern-reactor 0.2.0

Do arbitrary things in reaction to Ercoin transfers

ern_reactor is a Python library that allows performing arbitrary actions in reaction to Ercoin transfers, with live synchronization and catching up after coming back online. Licensed under Apache License 2.0. Python 3.8 or newer is required.

How to use

See the help for ern_reactor.ErcoinReactor:

import ern_reactor
help(ern_reactor.ErcoinReactor)

You need to implement the get_namespace and process_tx methods. To inspect the structure of the transaction dictionary which is passed to process_tx, see ern_reactor.TransferTx.__annotations__.

A basic example

This scripts connects to a local Ercoin node and live prints transaction values for transfers received by an Ercoin address (Base64-encoded) specified on the command line:

import asyncio
import decimal
import sys

from ern_reactor import ErcoinReactor


class DummyReactor(ErcoinReactor):
    def get_namespace(self):
        return 'dummy'

    async def process_tx(self, tx):
        amount_in_ern = decimal.Decimal(tx['value']) / 10**6
        print(f'Received {amount_in_ern} ERN')


if __name__ == '__main__':
    reactor = DummyReactor(
        node='127.0.0.1',
        to_address=sys.argv[1],
        ssl=False,
    )
    try:
        asyncio.run(reactor.start())
    except KeyboardInterrupt:
        sys.exit(0)