cic-internal-integration/apps/cic-eth/cic_eth/eth/nonce.py
2021-03-18 19:36:52 +01:00

32 lines
854 B
Python

# local imports
from cic_eth.db.models.nonce import (
Nonce,
NonceReservation,
)
class CustodialTaskNonceOracle():
"""Ensures atomic nonce increments for all transactions across all tasks and threads.
:param address: Address to generate nonces for
:type address: str, 0x-hex
:param default_nonce: Initial nonce value to use if no nonce cache entry already exists
:type default_nonce: number
"""
def __init__(self, address, uuid, session=None):
self.address = address
self.uuid = uuid
self.session = session
def get_nonce(self):
return self.next_nonce()
def next_nonce(self):
"""Get next unique nonce.
:returns: Nonce
:rtype: number
"""
return NonceReservation.release(self.address, self.uuid, session=self.session)