def test_cooperative(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
receiver_address: str,
web3: Web3,
token_contract: Contract,
wait_for_blocks,
sender_address: str
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
sig1 = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig1)
receiver_sig = channel_manager.sign_close(sender_address, confirmed_open_channel.block, 5)
channel_rec = channel_manager.channels[channel_id]
assert channel_rec.is_closed is True
block_before = web3.eth.blockNumber
confirmed_open_channel.close_cooperatively(receiver_sig)
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
logs = get_logs(token_contract, 'Transfer', from_block=block_before - 1)
assert len([l for l in logs
if is_same_address(l['args']['_to'], receiver_address) and
l['args']['_value'] == 5]) == 1
assert len([l for l in logs
if is_same_address(l['args']['_to'], sender_address) and
l['args']['_value'] == 5]) == 1
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def test_balances(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks,
sender_address: str,
use_tester: bool
):
blockchain = channel_manager.blockchain
initial_liquid_balance = channel_manager.get_liquid_balance()
initial_locked_balance = channel_manager.get_locked_balance()
if use_tester:
assert initial_liquid_balance == 0
assert initial_locked_balance == 0
sig = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig)
assert channel_manager.get_liquid_balance() == initial_liquid_balance
assert channel_manager.get_locked_balance() == 5
receiver_sig = channel_manager.sign_close(sender_address, confirmed_open_channel.block, 5)
confirmed_open_channel.close_cooperatively(receiver_sig)
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_manager.get_liquid_balance() == initial_liquid_balance + 5
assert channel_manager.get_locked_balance() == initial_locked_balance
def test_topup(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks
):
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
confirmed_open_channel.topup(5)
wait_for_blocks(1)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
topup_txs = channel_rec.unconfirmed_topups
assert len(topup_txs) == 1 and list(topup_txs.values())[0] == 5
wait_for_blocks(channel_manager.blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
topup_txs = channel_rec.unconfirmed_topups
assert len(topup_txs) == 0
assert channel_rec.deposit == 15
def test_channel_settled_event(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks,
web3: Web3,
use_tester: bool
):
if not use_tester:
pytest.skip('This test takes several hours on real blockchains.')
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
wait_for_blocks(channel_rec.settle_timeout - web3.eth.blockNumber)
gevent.sleep(blockchain.poll_interval)
assert web3.eth.blockNumber >= channel_rec.settle_timeout
assert channel_id in channel_manager.channels
confirmed_open_channel.settle()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def close_channel_cooperatively(
channel: Channel, privkey_receiver: str, contract_address: str, balance: int=None
):
if balance is not None:
channel.balance = balance
closing_sig = sign_close(privkey_receiver, channel.balance_sig)
assert channel.close_cooperatively(closing_sig)
def test_multiple_topups(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
channel_rec = channel_manager.channels[channel_id]
# first unconfirmed topup
assert channel_rec.deposit == 10
confirmed_open_channel.topup(5)
wait_for_blocks(1)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
assert len(channel_rec.unconfirmed_topups) == 1
assert list(channel_rec.unconfirmed_topups.values()) == [5]
assert channel_rec.deposit == 10
# second unconfirmed_topups
confirmed_open_channel.topup(10)
wait_for_blocks(1)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
assert len(channel_rec.unconfirmed_topups) >= 1 # equality if first is confirmed
assert 10 in channel_rec.unconfirmed_topups.values()
assert channel_rec.deposit in [10, 15] # depends if first topup is confirmed or not
# wait for confirmations
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
assert len(channel_rec.unconfirmed_topups) == 0
assert channel_rec.deposit == 25
def test_topup(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks
):
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
confirmed_open_channel.topup(5)
wait_for_blocks(1)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
topup_txs = channel_rec.unconfirmed_topups
assert len(topup_txs) == 1 and list(topup_txs.values())[0] == 5
wait_for_blocks(channel_manager.blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
topup_txs = channel_rec.unconfirmed_topups
assert len(topup_txs) == 0
assert channel_rec.deposit == 15
def test_cooperative(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
receiver_address: str,
web3: Web3,
token_contract: Contract,
wait_for_blocks,
sender_address: str
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
sig1 = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig1)
receiver_sig = channel_manager.sign_close(sender_address, confirmed_open_channel.block, 5)
channel_rec = channel_manager.channels[channel_id]
assert channel_rec.is_closed is True
block_before = web3.eth.blockNumber
confirmed_open_channel.close_cooperatively(receiver_sig)
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
logs = get_logs(token_contract, 'Transfer', from_block=block_before - 1)
assert len([l for l in logs
if is_same_address(l['args']['_to'], receiver_address) and
l['args']['_value'] == 5]) == 1
assert len([l for l in logs
if is_same_address(l['args']['_to'], sender_address) and
l['args']['_value'] == 5]) == 1
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def test_balances(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks,
sender_address: str,
use_tester: bool
):
blockchain = channel_manager.blockchain
initial_liquid_balance = channel_manager.get_liquid_balance()
initial_locked_balance = channel_manager.get_locked_balance()
if use_tester:
assert initial_liquid_balance == 0
assert initial_locked_balance == 0
sig = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig)
assert channel_manager.get_liquid_balance() == initial_liquid_balance
assert channel_manager.get_locked_balance() == 5
receiver_sig = channel_manager.sign_close(sender_address, confirmed_open_channel.block, 5)
confirmed_open_channel.close_cooperatively(receiver_sig)
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_manager.get_liquid_balance() == initial_liquid_balance + 5
assert channel_manager.get_locked_balance() == initial_locked_balance
def close_channel_cooperatively(channel: Channel,
privkey_receiver: str,
balance: int = None):
if balance is not None:
channel.update_balance(balance)
closing_sig = sign_close(privkey_receiver, channel.balance_sig)
assert channel.close_cooperatively(closing_sig)
def test_multiple_topups(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
channel_rec = channel_manager.channels[channel_id]
# first unconfirmed topup
assert channel_rec.deposit == 10
confirmed_open_channel.topup(5)
wait_for_blocks(1)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
assert len(channel_rec.unconfirmed_topups) == 1
assert list(channel_rec.unconfirmed_topups.values()) == [5]
assert channel_rec.deposit == 10
# second unconfirmed_topups
confirmed_open_channel.topup(10)
wait_for_blocks(1)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
assert len(channel_rec.unconfirmed_topups) >= 1 # equality if first is confirmed
assert 10 in channel_rec.unconfirmed_topups.values()
assert channel_rec.deposit in [10, 15] # depends if first topup is confirmed or not
# wait for confirmations
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
assert len(channel_rec.unconfirmed_topups) == 0
assert channel_rec.deposit == 25
def test_settlement(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
receiver_address: str,
wait_for_blocks,
web3: Web3,
token_contract: Contract,
sender_address: str
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
sig = encode_hex(confirmed_open_channel.create_transfer(2))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 2, sig)
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
block_before = web3.eth.blockNumber
channel_rec = channel_manager.channels[channel_id]
wait_for_blocks(channel_rec.settle_timeout - block_before)
confirmed_open_channel.settle()
logs = get_logs(token_contract, 'Transfer', from_block=block_before - 1)
assert len([l for l in logs
if is_same_address(l['args']['_to'], receiver_address) and
l['args']['_value'] == 2]) == 1
assert len([l for l in logs
if is_same_address(l['args']['_to'], sender_address) and
l['args']['_value'] == 8]) == 1
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def close_channel_cooperatively(channel: Channel,
privkey_receiver: str,
contract_address: str,
balance: int = None):
if balance is not None:
channel.update_balance(balance)
closing_sig = sign_close(privkey_receiver, channel.sender, channel.block,
channel.balance, contract_address)
assert channel.close_cooperatively(closing_sig)
def close_channel(self, channel: Channel):
log.info(
'Requesting closing signature from server for balance {} on channel {}/{}/{}.'
.format(channel.balance, channel.sender, channel.sender, channel.block)
)
url = self.make_url('api/1/channels/{}/{}'.format(channel.sender, channel.block))
response = requests.delete(url, data={'balance': channel.balance})
if response.status_code == requests.codes.OK:
closing_sig = json.loads(response.content.decode())['close_signature']
channel.close_cooperatively(decode_hex(closing_sig))
else:
body = response.content.decode() if response.content else None
log.error('No closing signature received: {}'.format(body))
def close_channel_cooperatively(
channel: Channel, privkey_receiver: str, contract_address: str, balance: int=None
):
if balance is not None:
channel.update_balance(balance)
closing_sig = sign_close(
privkey_receiver,
channel.sender,
channel.block,
channel.balance,
contract_address
)
assert channel.close_cooperatively(closing_sig)
def close_channel(self, endpoint_url: str, channel: Channel):
log.debug(
'Requesting closing signature from server for balance {} on channel {}/{}/{}.'
.format(channel.balance, channel.sender, channel.sender,
channel.block))
url = '{}/api/1/channels/{}/{}'.format(endpoint_url, channel.sender,
channel.block)
response = requests.delete(url, data={'balance': channel.balance})
if response.status_code == requests.codes.OK:
closing_sig = response.json()['close_signature']
channel.close_cooperatively(decode_hex(closing_sig))
else:
self.on_cooperative_close_denied(endpoint_url, channel, response)
def test_cooperative_wrong_balance_proof(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
sender_address: str
):
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
channel_rec = channel_manager.channels[channel_id]
sig1 = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig1)
sig2 = encode_hex(confirmed_open_channel.create_transfer(1))
with pytest.raises(InvalidBalanceProof):
channel_manager.sign_close(sender_address, confirmed_open_channel.block, sig2)
assert channel_rec.is_closed is False
def test_cooperative_wrong_balance_proof(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
sender_address: str
):
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
channel_rec = channel_manager.channels[channel_id]
sig1 = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig1)
sig2 = encode_hex(confirmed_open_channel.create_transfer(1))
with pytest.raises(InvalidBalanceProof):
channel_manager.sign_close(sender_address, confirmed_open_channel.block, sig2)
assert channel_rec.is_closed is False
def test_close_confirmed_event(channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks):
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
channel_rec = channel_manager.channels[channel_id]
assert channel_rec.is_closed is True
settle_block = channel_manager.channel_manager_contract.call(
).getChannelInfo(channel_rec.sender, channel_rec.receiver,
channel_rec.open_block_number)[2]
assert channel_rec.settle_timeout == settle_block
def test_channel_settled_event(channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks, web3: Web3, use_tester: bool):
if not use_tester:
pytest.skip('This test takes several hours on real blockchains.')
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
wait_for_blocks(channel_rec.settle_timeout - web3.eth.blockNumber)
gevent.sleep(blockchain.poll_interval)
assert web3.eth.blockNumber >= channel_rec.settle_timeout
assert channel_id in channel_manager.channels
confirmed_open_channel.settle()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def test_channel_settled_event(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks,
web3: Web3
):
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_rec = channel_manager.channels[channel_id]
wait_for_blocks(channel_rec.settle_timeout - web3.eth.blockNumber)
gevent.sleep(blockchain.poll_interval)
assert web3.eth.blockNumber >= channel_rec.settle_timeout
assert channel_id in channel_manager.channels
confirmed_open_channel.settle()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def test_close_confirmed_event(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
wait_for_blocks
):
blockchain = channel_manager.blockchain
channel_manager.wait_sync()
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
channel_rec = channel_manager.channels[channel_id]
assert channel_rec.is_closed is True
settle_block = channel_manager.channel_manager_contract.call().getChannelInfo(
channel_rec.sender,
channel_rec.receiver,
channel_rec.open_block_number
)[2]
assert channel_rec.settle_timeout == settle_block
def test_settlement(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
receiver_address: str,
wait_for_blocks,
web3: Web3,
token_contract: Contract,
sender_address: str,
use_tester: bool
):
if not use_tester:
pytest.skip('This test takes several hours on real blockchains.')
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
sig = encode_hex(confirmed_open_channel.create_transfer(2))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 2, sig)
confirmed_open_channel.close()
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
block_before = web3.eth.blockNumber
channel_rec = channel_manager.channels[channel_id]
wait_for_blocks(channel_rec.settle_timeout - block_before)
confirmed_open_channel.settle()
logs = get_logs(token_contract, 'Transfer', from_block=block_before - 1)
assert len([l for l in logs
if is_same_address(l['args']['_to'], receiver_address) and
l['args']['_value'] == 2]) == 1
assert len([l for l in logs
if is_same_address(l['args']['_to'], sender_address) and
l['args']['_value'] == 8]) == 1
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
def test_challenge(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
receiver_address: str,
sender_address: str,
wait_for_blocks,
web3: Web3,
client: Client
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
sig = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig)
# hack channel to decrease balance
confirmed_open_channel.update_balance(0)
sig = confirmed_open_channel.create_transfer(3)
block_before = web3.eth.blockNumber
confirmed_open_channel.close()
# should challenge and immediately settle
for waited_blocks in count():
logs = get_logs(client.context.token, 'Transfer', from_block=block_before - 1)
if logs:
break
wait_for_blocks(1)
assert waited_blocks < 10
assert len([l for l in logs
if is_same_address(l['args']['_to'], receiver_address) and
l['args']['_value'] == 5]) == 1
assert len([l for l in logs
if is_same_address(l['args']['_to'], sender_address) and
l['args']['_value'] == 5]) == 1
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
# update channel state so that it will not be closed twice
client.sync_channels()
new_state = None
for channel in client.channels:
if all(channel.sender == confirmed_open_channel.sender,
channel.receiver == confirmed_open_channel.receiver,
channel.block == confirmed_open_channel.block):
new_state = channel.state
if new_state is None:
confirmed_open_channel.state = confirmed_open_channel.State.closed
else:
confirmed_open_channel.state = new_state
def test_challenge(
channel_manager: ChannelManager,
confirmed_open_channel: Channel,
receiver_address: str,
sender_address: str,
wait_for_blocks,
web3: Web3,
client: Client
):
blockchain = channel_manager.blockchain
channel_id = (confirmed_open_channel.sender, confirmed_open_channel.block)
sig = encode_hex(confirmed_open_channel.create_transfer(5))
channel_manager.register_payment(sender_address, confirmed_open_channel.block, 5, sig)
# hack channel to decrease balance
confirmed_open_channel.update_balance(0)
sig = confirmed_open_channel.create_transfer(3)
block_before = web3.eth.blockNumber
confirmed_open_channel.close()
# should challenge and immediately settle
for waited_blocks in count():
logs = get_logs(client.context.token, 'Transfer', from_block=block_before - 1)
if logs:
break
wait_for_blocks(1)
assert waited_blocks < 10
assert len([l for l in logs
if is_same_address(l['args']['_to'], receiver_address) and
l['args']['_value'] == 5]) == 1
assert len([l for l in logs
if is_same_address(l['args']['_to'], sender_address) and
l['args']['_value'] == 5]) == 1
wait_for_blocks(blockchain.n_confirmations)
gevent.sleep(blockchain.poll_interval)
assert channel_id not in channel_manager.channels
# update channel state so that it will not be closed twice
client.sync_channels()
new_state = None
for channel in client.channels:
if all(channel.sender == confirmed_open_channel.sender,
channel.receiver == confirmed_open_channel.receiver,
channel.block == confirmed_open_channel.block):
new_state = channel.state
if new_state is None:
confirmed_open_channel.state = confirmed_open_channel.State.closed
else:
confirmed_open_channel.state = new_state
def sync_channels(self):
"""
Merges locally available channel information, including their current balance signatures,
with channel information available on the blockchain to make up for local data loss.
Naturally, balance signatures cannot be recovered from the blockchain.
"""
filters = {'_sender_address': self.context.address}
create = get_logs(self.context.channel_manager,
'ChannelCreated',
argument_filters=filters,
from_block=start_sync_block,
to_block='latest')
topup = get_logs(self.context.channel_manager,
'ChannelToppedUp',
argument_filters=filters,
from_block=start_sync_block,
to_block='latest')
close = get_logs(self.context.channel_manager,
'ChannelCloseRequested',
argument_filters=filters,
from_block=start_sync_block,
to_block='latest')
settle = get_logs(self.context.channel_manager,
'ChannelSettled',
argument_filters=filters,
from_block=start_sync_block,
to_block='latest')
channel_key_to_channel = {}
def get_channel(event) -> Channel:
sender = to_checksum_address(event['args']['_sender_address'])
receiver = to_checksum_address(event['args']['_receiver_address'])
block = event['args'].get('_open_block_number',
event['blockNumber'])
assert is_same_address(sender, self.context.address)
return channel_key_to_channel.get((sender, receiver, block), None)
for c in self.channels:
channel_key_to_channel[(c.sender, c.receiver, c.block)] = c
for e in create:
c = get_channel(e)
if c:
c.deposit = e['args']['_deposit']
else:
c = Channel(
self.context,
to_checksum_address(e['args']['_sender_address']),
to_checksum_address(e['args']['_receiver_address']),
e['blockNumber'],
e['args']['_deposit'],
on_settle=lambda channel: self.channels.remove(channel))
assert is_same_address(c.sender, self.context.address)
channel_key_to_channel[(c.sender, c.receiver, c.block)] = c
for e in topup:
c = get_channel(e)
c.deposit += e['args']['_added_deposit']
for e in close:
# Requested closed, not actual closed.
c = get_channel(e)
c.update_balance(e['args']['_balance'])
c.state = Channel.State.settling
for e in settle:
c = get_channel(e)
c.state = Channel.State.closed
# Forget closed channels.
self.channels = [
c for c in channel_key_to_channel.values()
if c.state != Channel.State.closed
]
log.debug('Synced a total of {} channels.'.format(len(self.channels)))
def on_cooperative_close_denied(self, endpoint_url: str, channel: Channel,
response: Response):
log.warning(
'No closing signature received. Closing noncooperatively on a balance of 0.'
)
channel.close(0)