cic-stack/apps/cic-eth/cic_eth/check/signer.py

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# standard imports
import time
import logging
from urllib.error import URLError
# external imports
from chainlib.connection import RPCConnection
from chainlib.eth.constant import ZERO_ADDRESS
from chainlib.eth.sign import sign_message
from chainlib.error import JSONRPCException
logg = logging.getLogger().getChild(__name__)
def health(*args, **kwargs):
blocked = True
max_attempts = 5
conn = RPCConnection.connect(kwargs['config'].get('CHAIN_SPEC'), tag='signer')
for i in range(max_attempts):
idx = i + 1
logg.debug('attempt signer connection check {}/{}'.format(idx, max_attempts))
try:
conn.do(sign_message(ZERO_ADDRESS, '0x2a'))
except FileNotFoundError:
pass
except ConnectionError:
pass
except URLError:
pass
except JSONRPCException:
logg.debug('signer connection succeeded')
return True
if idx < max_attempts:
time.sleep(0.5)
return False