74 lines
2.1 KiB
Python
74 lines
2.1 KiB
Python
# standard imports
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import logging
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# external imports
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from erc20_faucet import Faucet
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from chainlib.eth.address import to_checksum_address
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from chainlib.eth.constant import ZERO_ADDRESS
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from chainlib.status import Status
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from hexathon import strip_0x
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# local imports
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import cic_cache.db as cic_cache_db
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from .base import TagSyncFilter
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#logg = logging.getLogger().getChild(__name__)
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logg = logging.getLogger()
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class FaucetFilter(TagSyncFilter):
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def __init__(self, chain_spec, sender_address=ZERO_ADDRESS):
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super(FaucetFilter, self).__init__('give_to', domain='faucet')
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self.chain_spec = chain_spec
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self.sender_address = sender_address
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def filter(self, conn, block, tx, db_session=None):
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try:
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data = strip_0x(tx.payload)
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except ValueError:
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return False
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logg.debug('data {}'.format(data))
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if Faucet.method_for(data[:8]) == None:
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return False
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token_sender = tx.inputs[0]
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token_recipient = data[64+8-40:]
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logg.debug('token recipient {}'.format(token_recipient))
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f = Faucet(self.chain_spec)
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o = f.token(token_sender, sender_address=self.sender_address)
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r = conn.do(o)
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token = f.parse_token(r)
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f = Faucet(self.chain_spec)
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o = f.token_amount(token_sender, sender_address=self.sender_address)
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r = conn.do(o)
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token_value = f.parse_token_amount(r)
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cic_cache_db.add_transaction(
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db_session,
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tx.hash,
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block.number,
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tx.index,
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to_checksum_address(token_sender),
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to_checksum_address(token_recipient),
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token,
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token,
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token_value,
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token_value,
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tx.status == Status.SUCCESS,
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block.timestamp,
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)
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db_session.flush()
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cic_cache_db.tag_transaction(
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db_session,
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tx.hash,
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self.tag_name,
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domain=self.tag_domain,
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)
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db_session.commit()
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return True
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