135 lines
4.3 KiB
Python
135 lines
4.3 KiB
Python
# standard imports
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import logging
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# external imports
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import celery
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from cic_eth_registry.error import (
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UnknownContractError,
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NotAContractError,
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)
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from chainlib.status import Status as TxStatus
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from chainlib.eth.address import to_checksum_address
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from chainlib.eth.error import RequestMismatchException
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from chainlib.eth.constant import ZERO_ADDRESS
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from hexathon import (
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strip_0x,
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add_0x,
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)
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from eth_erc20 import ERC20
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from erc20_faucet import Faucet
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from cic_eth.eth.meta import ExtendedTx
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# local imports
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from cic_sync_filter.parse import (
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parse_transfer,
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parse_transferfrom,
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parse_giftto,
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)
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from .base import SyncFilter
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logg = logging.getLogger(__name__)
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class CallbackFilter(SyncFilter):
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trusted_addresses = []
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def __init__(self, chain_spec, registry, queue, caller_address=ZERO_ADDRESS):
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super(CallbackFilter, self).__init__(chain_spec, registry, queue, caller_address=caller_address)
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self.method = None
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def set_method(self, method):
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self.method = method
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def call_back(self, transfer_type, result):
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result['chain_spec'] = result['chain_spec'].asdict()
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s = celery.signature(
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self.method,
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[
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result,
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transfer_type,
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int(result['status_code'] != 0),
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],
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queue=self.queue,
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)
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t = s.apply_async()
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return t
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def parse_data(self, tx, conn):
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transfer_type = None
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transfer_data = None
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# TODO: what's with the mix of attributes and dict keys
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logg.debug('have payload {}'.format(tx.payload))
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logg.debug('tx status {}'.format(tx.status))
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for parser in [
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parse_transfer,
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parse_transferfrom,
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parse_giftto,
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]:
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try:
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if tx:
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(transfer_type, transfer_data) = parser(tx, conn, self.chain_spec, self.caller_address)
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if transfer_type == None:
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continue
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break
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except RequestMismatchException:
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continue
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logg.debug('resolved method {}'.format(transfer_type))
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if transfer_data != None:
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transfer_data['status'] = tx.status
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return (transfer_type, transfer_data)
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def filter(self, conn, block, tx):
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super(CallbackFilter, self).filter(conn, block, tx)
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transfer_data = None
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transfer_type = None
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try:
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(transfer_type, transfer_data) = self.parse_data(tx, conn)
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except TypeError:
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logg.debug('invalid method data length for tx {}'.format(tx.hash))
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return
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if len(tx.payload) < 8:
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logg.debug('callbacks filter data length not sufficient for method signature in tx {}, skipping'.format(tx.hash))
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return
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logg.debug('checking callbacks filter input {}'.format(tx.payload[:8]))
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t = None
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if transfer_data != None:
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token_symbol = None
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result = None
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try:
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tokentx = ExtendedTx(conn, tx.hash, self.chain_spec)
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tokentx.set_actors(transfer_data['from'], transfer_data['to'], self.trusted_addresses, caller_address=self.caller_address)
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tokentx.set_tokens(transfer_data['token_address'], transfer_data['value'])
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if transfer_data['status'] == 0:
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tokentx.set_status(1)
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else:
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tokentx.set_status(0)
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result = tokentx.asdict()
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t = self.call_back(transfer_type, result)
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self.register_match()
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logline = 'callback success task id {} tx {} queue {}'.format(t, tx.hash, t.queue)
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logline = self.to_logline(block, tx, logline)
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logg.info(logline)
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except UnknownContractError:
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logg.debug('callback filter {}:{} skipping "transfer" method on unknown contract {} tx {}'.format(self.queue, self.method, transfer_data['to'], tx.hash))
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except NotAContractError:
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logg.debug('callback filter {}:{} skipping "transfer" on non-contract address {} tx {}'.format(self.queue, self.method, transfer_data['to'], tx.hash))
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return t
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def __str__(self):
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return 'callbackfilter'
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