def register_payment(self, sender: str, open_block_number: int, balance: int, signature: str):
"""Register a payment.
Method will try to reconstruct (verify) balance update data
with a signature sent by the client.
If verification is succesfull, an internal payment state is updated.
Parameters:
sender (str): sender of the balance proof
open_block_number (int): block the channel was opened in
balance (int): updated balance
signature(str): balance proof to verify
"""
assert is_checksum_address(sender)
c = self.verify_balance_proof(sender, open_block_number, balance, signature)
if balance <= c.balance:
raise InvalidBalanceAmount('The balance must not decrease.')
if balance > c.deposit:
raise InvalidBalanceProof('Balance must not be greater than deposit')
received = balance - c.balance
c.old_balance = c.balance
c.balance = balance
c.old_signature = c.last_signature
c.last_signature = signature
c.mtime = time.time()
self.state.set_channel(c)
self.log.debug('registered payment (sender %s, block number %s, new balance %s)',
c.sender, open_block_number, balance)
return c.sender, received
def register_payment(self, sender, open_block_number, balance, signature):
"""Register a payment."""
c = self.verify_balance_proof(sender, open_block_number, balance, signature)
if balance <= c.balance:
raise InvalidBalanceAmount('The balance must increase.')
if balance > c.deposit:
raise InvalidBalanceProof('Balance must not be greater than deposit.')
received = balance - c.balance
c.balance = balance
c.last_signature = signature
c.mtime = time.time()
self.state.store()
self.log.debug('registered payment (sender %s, block number %s, new balance %s)',
c.sender, open_block_number, balance)
return (c.sender, received)