def make_receive_expired_lock(
channel_state: NettingChannelState,
privkey: bytes,
nonce: Nonce,
transferred_amount: TokenAmount,
lock: HashTimeLockState,
merkletree_leaves: List[Keccak256] = None,
locked_amount: LockedAmount = None,
chain_id: ChainID = None,
) -> ReceiveLockExpired:
if not isinstance(lock, HashTimeLockState):
raise ValueError("lock must be of type HashTimeLockState")
signer = LocalSigner(privkey)
address = signer.address
if address not in (channel_state.our_state.address,
channel_state.partner_state.address):
raise ValueError("Private key does not match any of the participants.")
if merkletree_leaves is None:
layers = make_empty_merkle_tree().layers
else:
assert lock.lockhash not in merkletree_leaves
layers = compute_layers(merkletree_leaves)
locksroot = layers[MERKLEROOT][0]
chain_id = chain_id or channel_state.chain_id
lock_expired_msg = LockExpired(
chain_id=chain_id,
nonce=nonce,
message_identifier=random.randint(0, UINT64_MAX),
transferred_amount=transferred_amount,
locked_amount=locked_amount,
locksroot=locksroot,
channel_identifier=channel_state.identifier,
token_network_address=channel_state.token_network_identifier,
recipient=channel_state.partner_state.address,
secrethash=lock.secrethash,
)
lock_expired_msg.sign(signer)
balance_proof = balanceproof_from_envelope(lock_expired_msg)
receive_lockedtransfer = ReceiveLockExpired(
balance_proof=balance_proof,
secrethash=lock.secrethash,
message_identifier=random.randint(0, UINT64_MAX),
)
return receive_lockedtransfer
def make_receive_expired_lock(
channel_state,
privkey,
nonce,
transferred_amount,
lock,
merkletree_leaves=None,
locked_amount=None,
chain_id=None,
):
if not isinstance(lock, HashTimeLockState):
raise ValueError('lock must be of type HashTimeLockState')
address = privatekey_to_address(privkey.secret)
if address not in (channel_state.our_state.address,
channel_state.partner_state.address):
raise ValueError('Private key does not match any of the participants.')
if merkletree_leaves is None:
layers = EMPTY_MERKLE_TREE.layers
else:
assert lock.lockhash not in merkletree_leaves
layers = compute_layers(merkletree_leaves)
locksroot = layers[MERKLEROOT][0]
chain_id = chain_id or channel_state.chain_id
lock_expired_msg = LockExpired(
chain_id=chain_id,
nonce=nonce,
message_identifier=random.randint(0, UINT64_MAX),
transferred_amount=transferred_amount,
locked_amount=locked_amount,
locksroot=locksroot,
channel_identifier=channel_state.identifier,
token_network_address=channel_state.token_network_identifier,
recipient=channel_state.partner_state.address,
secrethash=lock.secrethash,
)
lock_expired_msg.sign(privkey)
balance_proof = balanceproof_from_envelope(lock_expired_msg)
receive_lockedtransfer = ReceiveLockExpired(
channel_state.partner_state.address,
balance_proof,
lock.secrethash,
random.randint(0, UINT64_MAX),
)
return receive_lockedtransfer