def make_channel(
self,
token_address=make_address(),
partner_address=make_address(),
reveal_timeout=20,
settle_timeout=800,
balance=0,
):
our_address = make_address()
our_balance = balance
partner_balance = balance
our_state = ChannelEndState(our_address, our_balance, 1)
partner_state = ChannelEndState(partner_address, partner_balance, 1)
block_alarm = list()
channel_for_hashlock = list()
netting_channel = NettingChannelMock(make_address())
external_state = ChannelExternalState(
block_alarm.append,
lambda *args: channel_for_hashlock.append(args),
lambda: 1,
netting_channel,
)
self.tokens.add(token_address)
return Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
def channel_list_mock(num_channels):
channel_list = []
for _ in range(0, num_channels):
netting_channel = NettingChannelMock()
asset_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = random.randint(0, 2**128)
balance2 = random.randint(0, 2**128)
reveal_timeout = random.randint(0, 2**64)
settle_timeout = reveal_timeout + random.randint(0, 2**64)
our_state = ChannelEndState(address1, balance1, netting_channel.opened)
partner_state = ChannelEndState(address2, balance2,
netting_channel.opened)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
asset_address,
reveal_timeout,
settle_timeout,
)
channel_list.append(test_channel)
return channel_list
def setup_channel(self, asset_manager, asset_address,
nettingcontract_address, min_locktime):
""" Initialize the Channel for the given netting contract. """
channel_details = self.chain.netting_contract_detail(
asset_address,
nettingcontract_address,
self.address,
)
our_state = ChannelEndState(
self.address,
channel_details['our_balance'],
)
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
)
channel = Channel(
self.chain,
asset_address,
nettingcontract_address,
our_state,
partner_state,
min_locktime=min_locktime,
)
asset_manager.add_channel(channel_details['partner_address'], channel)
def test_channel_must_accept_expired_locks():
""" A node may go offline for an undetermined period of time, and when it
comes back online it must accept the messages that are waiting, otherwise
the partner node won't make progress with its queue.
If a N node goes offline for a number B of blocks, and the partner does not
close the channel, when N comes back online some of the messages from its
partner may become expired. Neverthless these messages are ordered and must
be accepted for the partner to make progress with its queue.
Note: Accepting a message with an expired lock does *not* imply the token
transfer happened, and the receiver node must *not* forward the transfer,
only accept the message allowing the partner to progress with its message
queue.
"""
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
privkey1, address1 = make_privkey_address()
privkey2, address2 = make_privkey_address()
token_address = make_address()
our_state = ChannelEndState(
address1,
balance1,
None,
EMPTY_MERKLE_TREE,
)
partner_state = ChannelEndState(
address2,
balance2,
None,
EMPTY_MERKLE_TREE,
)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
block_number = 10
transfer = make_mediated_transfer(
nonce=test_channel.get_next_nonce(),
token=test_channel.token_address,
channel=test_channel.channel_address,
expiration=block_number + settle_timeout,
recipient=address1,
)
transfer.sign(privkey2, address2)
test_channel.register_transfer(
block_number + settle_timeout + 1,
transfer,
)
def test_channel_to_api_dict():
channel_address = b'\x00' * 20
token_address = b'\x01' * 20
our_address = b'\x02' * 20
partner_address = b'\x03' * 20
reveal_timeout = 10
settle_timeout = 50
opened_block = 900
our_balance = 13
partner_balance = 21
our_state = ChannelEndState(
our_address,
our_balance,
None,
EMPTY_MERKLE_TREE,
)
partner_state = ChannelEndState(
partner_address,
partner_balance,
None,
EMPTY_MERKLE_TREE,
)
# mock external state to provide the channel address
class NettingChannel(object):
address = channel_address
class ExternalState(object):
def __init__(self, opened_block):
self.netting_channel = NettingChannel()
self.settled_block = 0
self.closed_block = 0
self.opened_block = opened_block
channel = Channel(
our_state,
partner_state,
ExternalState(opened_block),
token_address,
reveal_timeout,
settle_timeout,
)
result = channel_to_api_dict(channel)
expected_result = {
'channel_address': channel_address,
'token_address': token_address,
'partner_address': partner_address,
'settle_timeout': settle_timeout,
'reveal_timeout': reveal_timeout,
'balance': our_balance,
'state': CHANNEL_STATE_OPENED
}
assert result == expected_result
def test_channel_close_called_only_once():
class MockCheckCallsToClose():
def __init__(self):
self.address = 'mockcheckcallstoclosemockcheckcallstoclo'
self.close_calls = 0
def opened(self):
return 1
def closed(self):
return 0
def settled(self):
return 0
def close(self, nonce, transferred_amount, locksroot, extra_hash,
signature):
self.close_calls += 1
netting_channel = NettingChannelMock()
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
our_state = ChannelEndState(address1, balance1, netting_channel.opened())
partner_state = ChannelEndState(address2, balance2,
netting_channel.opened())
channel_for_hashlock = list()
netting_channel = MockCheckCallsToClose()
external_state = ChannelExternalState(
lambda *args: channel_for_hashlock.append(args),
netting_channel,
)
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
test_channel.external_state.close('')
test_channel.external_state.close('')
assert netting_channel.close_calls == 1
def restore_channel(self, serialized_channel):
token_address = serialized_channel.token_address
netting_channel = self.chain.netting_channel(
serialized_channel.channel_address,
)
# restoring balances from the BC since the serialized value could be
# falling behind.
channel_details = netting_channel.detail(self.address)
# our_address is checked by detail
assert channel_details['partner_address'] == serialized_channel.partner_address
opened_block = netting_channel.opened()
our_state = ChannelEndState(
channel_details['our_address'],
channel_details['our_balance'],
opened_block,
)
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
opened_block,
)
def register_channel_for_hashlock(channel, hashlock):
self.register_channel_for_hashlock(
token_address,
channel,
hashlock,
)
external_state = ChannelExternalState(
register_channel_for_hashlock,
netting_channel,
)
details = ChannelDetails(
serialized_channel.channel_address,
our_state,
partner_state,
external_state,
serialized_channel.reveal_timeout,
channel_details['settle_timeout'],
)
graph = self.token_to_channelgraph[token_address]
graph.add_channel(details)
channel = graph.address_to_channel.get(
serialized_channel.channel_address,
)
channel.our_state.balance_proof = serialized_channel.our_balance_proof
channel.partner_state.balance_proof = serialized_channel.partner_balance_proof
def channel_from_nettingcontract(
our_key,
netting_contract,
external_state,
reveal_timeout):
""" Create a `channel.Channel` for the `netting_contract`.
Use this to make sure that both implementations (the smart contract and the
python code) work in tandem.
"""
our_address = privatekey_to_address(our_key)
token_address_hex = netting_contract.tokenAddress(sender=our_key)
settle_timeout = netting_contract.settleTimeout(sender=our_key)
address_balance = netting_contract.addressAndBalance(sender=our_key)
address1_hex, balance1, address2_hex, balance2 = address_balance
token_address = normalize_address(token_address_hex)
address1 = normalize_address(address1_hex)
address2 = normalize_address(address2_hex)
if our_address == address1:
our_balance = balance1
partner_address = address2
partner_balance = balance2
else:
our_balance = balance2
partner_address = address1
partner_balance = balance1
our_state = ChannelEndState(
our_address,
our_balance,
None,
EMPTY_MERKLE_TREE,
)
partner_state = ChannelEndState(
partner_address,
partner_balance,
None,
EMPTY_MERKLE_TREE,
)
channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
return channel
def test_invalid_timeouts():
netting_channel = NettingChannelMock()
token_address = make_address()
reveal_timeout = 5
settle_timeout = 15
address1 = make_address()
address2 = make_address()
balance1 = 10
balance2 = 10
block_number = 10
our_state = ChannelEndState(address1, balance1, netting_channel.opened())
partner_state = ChannelEndState(address2, balance2,
netting_channel.opened())
external_state = make_external_state()
# do not allow a reveal timeout larger than the settle timeout
with pytest.raises(ValueError):
large_reveal_timeout = 50
small_settle_timeout = 49
Channel(
our_state,
partner_state,
external_state,
token_address,
large_reveal_timeout,
small_settle_timeout,
block_number,
)
for invalid_value in (-1, 0, 1.1, 1.0, 'a', [], {}):
with pytest.raises(ValueError):
Channel(
our_state,
partner_state,
external_state,
token_address,
invalid_value,
settle_timeout,
block_number,
)
with pytest.raises(ValueError):
Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
invalid_value,
block_number,
)
def channel_from_nettingcontract(our_key, netting_contract, external_state,
reveal_timeout):
""" Create a `channel.Channel` for the `netting_contract`.
Use this to make sure that both implementations (the smart contract and the
python code) work in tandem.
"""
our_address = privatekey_to_address(our_key)
asset_address_hex = netting_contract.assetAddress(sender=our_key)
settle_timeout = netting_contract.settleTimeout(sender=our_key)
address_balance = netting_contract.addressAndBalance(sender=our_key)
address1_hex, balance1, address2_hex, balance2 = address_balance
asset_address = decode_hex(asset_address_hex)
address1 = decode_hex(address1_hex)
address2 = decode_hex(address2_hex)
if our_address == address1:
our_balance = balance1
partner_address = address2
partner_balance = balance2
else:
our_balance = balance2
partner_address = address1
partner_balance = balance1
our_state = ChannelEndState(
our_address,
our_balance,
external_state.opened_block,
)
partner_state = ChannelEndState(
partner_address,
partner_balance,
external_state.opened_block,
)
channel = Channel(
our_state,
partner_state,
external_state,
asset_address,
reveal_timeout,
settle_timeout,
)
return channel
def test_invalid_timeouts():
token_address = make_address()
reveal_timeout = 5
settle_timeout = 15
address1 = make_address()
address2 = make_address()
balance1 = 10
balance2 = 10
our_state = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
partner_state = ChannelEndState(address2, balance2, None,
EMPTY_MERKLE_TREE)
external_state = make_external_state()
# do not allow a reveal timeout larger than the settle timeout
with pytest.raises(ValueError):
large_reveal_timeout = 50
small_settle_timeout = 49
Channel(
our_state,
partner_state,
external_state,
token_address,
large_reveal_timeout,
small_settle_timeout,
)
for invalid_value in (-1, 0, 1.1, 1.0, 'a', [], {}):
with pytest.raises(ValueError):
Channel(
our_state,
partner_state,
external_state,
token_address,
invalid_value,
settle_timeout,
)
with pytest.raises(ValueError):
Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
invalid_value,
)
def test_channel_increase_nonce_and_transferred_amount():
""" The nonce must increase with each new transfer. """
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
our_state = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
partner_state = ChannelEndState(address2, balance2, None,
EMPTY_MERKLE_TREE)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
previous_nonce = test_channel.get_next_nonce()
previous_transferred = test_channel.transferred_amount
amount = 7
block_number = 1
for _ in range(10):
direct_transfer = test_channel.create_directtransfer(amount,
identifier=1)
direct_transfer.sign(privkey1, address1)
test_channel.register_transfer(block_number, direct_transfer)
new_nonce = test_channel.get_next_nonce()
new_transferred = test_channel.transferred_amount
assert new_nonce == previous_nonce + 1
assert new_transferred == previous_transferred + amount
previous_nonce = new_nonce
previous_transferred = new_transferred
def get_channel_details(self, token_address, netting_channel):
channel_details = netting_channel.detail()
our_state = ChannelEndState(
channel_details['our_address'],
channel_details['our_balance'],
None,
EMPTY_MERKLE_TREE,
)
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
None,
EMPTY_MERKLE_TREE,
)
def register_channel_for_hashlock(channel, hashlock):
self.register_channel_for_hashlock(
token_address,
channel,
hashlock,
)
channel_address = netting_channel.address
reveal_timeout = self.config['reveal_timeout']
settle_timeout = channel_details['settle_timeout']
external_state = ChannelExternalState(
register_channel_for_hashlock,
netting_channel,
)
channel_detail = ChannelDetails(
channel_address,
our_state,
partner_state,
external_state,
reveal_timeout,
settle_timeout,
)
return channel_detail
def make_channel(
self,
token_address=make_address(),
partner_address=make_address(),
reveal_timeout=20,
settle_timeout=800,
balance=0,
block_number=1):
our_address = make_address()
our_balance = balance
partner_balance = balance
our_state = ChannelEndState(
our_address,
our_balance,
None,
EMPTY_MERKLE_TREE,
)
partner_state = ChannelEndState(
partner_address,
partner_balance,
None,
EMPTY_MERKLE_TREE,
)
channel_for_hashlock = list()
netting_channel = NettingChannelMock(make_address())
external_state = ChannelExternalState(
lambda *args: channel_for_hashlock.append(args),
netting_channel,
)
self.tokens.add(token_address)
return Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
def test_end_state():
netting_channel = NettingChannelMock()
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
lock_secret = sha3('test_end_state')
lock_amount = 30
lock_expiration = 10
lock_hashlock = sha3(lock_secret)
state1 = ChannelEndState(address1, balance1, netting_channel.opened)
state2 = ChannelEndState(address2, balance2, netting_channel.opened)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == 0
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is False
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == ''
lock = Lock(
lock_amount,
lock_expiration,
lock_hashlock,
)
lock_hash = sha3(lock.as_bytes)
transferred_amount = 0
locksroot = state2.compute_merkleroot_with(lock)
locked_transfer = LockedTransfer(
1, # TODO: fill in identifier
nonce=state1.nonce,
token=token_address,
transferred_amount=transferred_amount,
recipient=state2.address,
locksroot=locksroot,
lock=lock,
)
transfer_target = make_address()
transfer_initiator = make_address()
fee = 0
mediated_transfer = locked_transfer.to_mediatedtransfer(
transfer_target,
transfer_initiator,
fee,
)
mediated_transfer.sign(privkey1, address1)
state2.register_locked_transfer(mediated_transfer)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == lock_amount
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is True
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == lock_hash
with pytest.raises(ValueError):
state1.update_contract_balance(balance1 - 10)
state1.update_contract_balance(balance1 + 10)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount + 10
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == lock_amount
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is True
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == lock_hash
# registering the secret should not change the locked amount
state2.register_secret(lock_secret)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount + 10
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == lock_amount
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is False
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == lock_hash
state2.release_lock(state1, lock_secret)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10 - lock_amount
assert state2.balance(state1) == balance2 + lock_amount
assert state1.distributable(state2) == balance1 + 10 - lock_amount
assert state2.distributable(state1) == balance2 + lock_amount
assert state1.locked() == 0
assert state2.locked() == 0
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is False
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == ''
def test_python_channel():
netting_channel = NettingChannelMock()
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
our_state = ChannelEndState(address1, balance1, netting_channel.opened)
partner_state = ChannelEndState(address2, balance2, netting_channel.opened)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
assert test_channel.contract_balance == our_state.contract_balance
assert test_channel.balance == our_state.balance(partner_state)
assert test_channel.transferred_amount == our_state.transferred_amount
assert test_channel.distributable == our_state.distributable(partner_state)
assert test_channel.outstanding == our_state.locked()
assert test_channel.outstanding == 0
assert test_channel.locked == partner_state.locked()
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == 0
with pytest.raises(ValueError):
test_channel.create_directtransfer(
-10,
1 # TODO: fill in identifier
)
with pytest.raises(ValueError):
test_channel.create_directtransfer(
balance1 + 10,
1 # TODO: fill in identifier
)
amount1 = 10
directtransfer = test_channel.create_directtransfer(
amount1,
1 # TODO: fill in identifier
)
directtransfer.sign(privkey1, address1)
test_channel.register_transfer(directtransfer)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1
assert test_channel.transferred_amount == amount1
assert test_channel.distributable == balance1 - amount1
assert test_channel.outstanding == 0
assert test_channel.locked == 0
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == 0
secret = sha3('test_channel')
hashlock = sha3(secret)
amount2 = 10
fee = 0
expiration = settle_timeout - 5
mediatedtransfer = test_channel.create_mediatedtransfer(
address1,
address2,
fee,
amount2,
1, # TODO: fill in identifier
expiration,
hashlock,
)
mediatedtransfer.sign(privkey1, address1)
test_channel.register_transfer(mediatedtransfer)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1
assert test_channel.transferred_amount == amount1
assert test_channel.distributable == balance1 - amount1 - amount2
assert test_channel.outstanding == 0
assert test_channel.locked == amount2
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == amount2
test_channel.release_lock(secret)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1 - amount2
assert test_channel.transferred_amount == amount1 + amount2
assert test_channel.distributable == balance1 - amount1 - amount2
assert test_channel.outstanding == 0
assert test_channel.locked == 0
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == 0
def register_channel(self, netting_channel, reveal_timeout):
""" Register a new channel.
Args:
netting_channel (network.rpc.client.NettingChannel): The netting channel proxy.
reveal_timeout (int): Minimum number of blocks required by this
node to see a secret.
Raises:
ValueError: If raiden.address is not one of the participants in the
netting channel.
"""
translator = ContractTranslator(NETTING_CHANNEL_ABI)
# race condition:
# - if the filter is installed after a deposit is made it could be
# missed, to avoid that we first install the filter, then request the
# state from the node and then poll the filter.
# - with the above strategy the same deposit could be handled twice,
# once from the status received from the netting contract and once from
# the event, to avoid problems the we use the balance instead of the
# deposit is used.
newbalance = netting_channel.channelnewbalance_filter()
newbalance_listener = LogListenerTask(
newbalance,
self.raiden.on_event,
translator,
)
secretrevealed = netting_channel.channelsecretrevealed_filter()
secretrevealed_listener = LogListenerTask(
secretrevealed,
self.raiden.on_event,
translator,
)
close = netting_channel.channelclosed_filter()
close_listener = LogListenerTask(
close,
self.raiden.on_event,
translator,
)
settled = netting_channel.channelsettled_filter()
settled_listener = LogListenerTask(
settled,
self.raiden.on_event,
translator,
)
channel_details = netting_channel.detail(self.raiden.address)
our_state = ChannelEndState(
channel_details['our_address'],
channel_details['our_balance'],
)
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
)
external_state = ChannelExternalState(
self.register_channel_for_hashlock,
self.raiden.chain.block_number,
netting_channel,
)
channel = Channel(
our_state,
partner_state,
external_state,
self.asset_address,
reveal_timeout,
channel_details['settle_timeout'],
)
self.partneraddress_channel[partner_state.address] = channel
self.address_channel[netting_channel.address] = channel
self.channelgraph.add_path(
channel_details['our_address'],
channel_details['partner_address'],
)
newbalance_listener.start()
secretrevealed_listener.start()
close_listener.start()
settled_listener.start()
self.raiden.event_listeners.append(newbalance_listener)
self.raiden.event_listeners.append(secretrevealed_listener)
self.raiden.event_listeners.append(close_listener)
self.raiden.event_listeners.append(settled_listener)
def register_channel(self, netting_channel, reveal_timeout):
""" Register a new channel.
Args:
netting_channel (network.rpc.client.NettingChannel): The netting channel proxy.
reveal_timeout (int): Minimum number of blocks required by this
node to see a secret.
Raises:
ValueError: If raiden.address is not one of the participants in the
netting channel.
"""
translator = ContractTranslator(NETTING_CHANNEL_ABI)
# Race condition:
# - If the filter is installed after the call to `details` a deposit
# could be missed in the meantime, to avoid this we first install the
# filter listener and then call `deposit`.
# - Because of the above strategy a `deposit` event could be handled
# twice, for this reason we must not use `deposit` in the events but
# the resulting `balance`.
task_name = 'ChannelNewBalance {}'.format(pex(netting_channel.address))
newbalance = netting_channel.channelnewbalance_filter()
newbalance_listener = LogListenerTask(
task_name,
newbalance,
self.raiden.on_event,
translator,
)
task_name = 'ChannelSecretRevelead {}'.format(
pex(netting_channel.address))
secretrevealed = netting_channel.channelsecretrevealed_filter()
secretrevealed_listener = LogListenerTask(
task_name,
secretrevealed,
self.raiden.on_event,
translator,
)
task_name = 'ChannelClosed {}'.format(pex(netting_channel.address))
close = netting_channel.channelclosed_filter()
close_listener = LogListenerTask(
task_name,
close,
self.raiden.on_event,
translator,
)
task_name = 'ChannelSettled {}'.format(pex(netting_channel.address))
settled = netting_channel.channelsettled_filter()
settled_listener = LogListenerTask(
task_name,
settled,
self.raiden.on_event,
translator,
)
channel_details = netting_channel.detail(self.raiden.address)
our_state = ChannelEndState(
channel_details['our_address'],
channel_details['our_balance'],
)
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
)
external_state = ChannelExternalState(
self.raiden.alarm.register_callback,
self.register_channel_for_hashlock,
self.raiden.chain.block_number,
netting_channel,
)
channel = Channel(
our_state,
partner_state,
external_state,
self.asset_address,
reveal_timeout,
channel_details['settle_timeout'],
)
self.partneraddress_channel[partner_state.address] = channel
self.address_channel[netting_channel.address] = channel
newbalance_listener.start()
secretrevealed_listener.start()
close_listener.start()
settled_listener.start()
self.raiden.event_listeners.append(newbalance_listener)
self.raiden.event_listeners.append(secretrevealed_listener)
self.raiden.event_listeners.append(close_listener)
self.raiden.event_listeners.append(settled_listener)
def test_end_state():
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
channel_address = make_address()
balance1 = 70
balance2 = 110
lock_secret = sha3('test_end_state')
lock_amount = 30
lock_expiration = 10
lock_hashlock = sha3(lock_secret)
state1 = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
state2 = ChannelEndState(address2, balance2, None, EMPTY_MERKLE_TREE)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.is_locked(lock_hashlock) is False
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == EMPTY_MERKLE_ROOT
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is None
assert state2.nonce is None
lock = Lock(
lock_amount,
lock_expiration,
lock_hashlock,
)
lock_hash = sha3(lock.as_bytes)
transferred_amount = 0
locksroot = state2.compute_merkleroot_with(lock)
locked_transfer = LockedTransfer(
1,
nonce=1,
token=token_address,
channel=channel_address,
transferred_amount=transferred_amount,
recipient=state2.address,
locksroot=locksroot,
lock=lock,
)
transfer_target = make_address()
transfer_initiator = make_address()
fee = 0
mediated_transfer = locked_transfer.to_mediatedtransfer(
transfer_target,
transfer_initiator,
fee,
)
mediated_transfer.sign(privkey1, address1)
state1.register_locked_transfer(mediated_transfer)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount
assert state2.distributable(state1) == balance2
assert state1.amount_locked == lock_amount
assert state2.amount_locked == 0
assert state1.is_locked(lock_hashlock) is True
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == lock_hash
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 1
assert state2.nonce is None
with pytest.raises(ValueError):
state1.update_contract_balance(balance1 - 10)
state1.update_contract_balance(balance1 + 10)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount + 10
assert state2.distributable(state1) == balance2
assert state1.amount_locked == lock_amount
assert state2.amount_locked == 0
assert state1.is_locked(lock_hashlock) is True
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == lock_hash
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 1
assert state2.nonce is None
# registering the secret should not change the locked amount
state1.register_secret(lock_secret)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.is_locked(lock_hashlock) is False
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == lock_hash
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 1
assert state2.nonce is None
secret_message = Secret(
identifier=1,
nonce=2,
channel=channel_address,
transferred_amount=transferred_amount + lock_amount,
locksroot=EMPTY_MERKLE_ROOT,
secret=lock_secret,
)
secret_message.sign(privkey1, address1)
state1.register_secretmessage(secret_message)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10 - lock_amount
assert state2.balance(state1) == balance2 + lock_amount
assert state1.distributable(state2) == balance1 + 10 - lock_amount
assert state2.distributable(state1) == balance2 + lock_amount
assert state1.amount_locked == 0
assert state2.amount_locked == 0
assert state1.is_locked(lock_hashlock) is False
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == EMPTY_MERKLE_ROOT
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 2
assert state2.nonce is None
def test_python_channel():
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
block_number = 10
our_state = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
partner_state = ChannelEndState(address2, balance2, None, EMPTY_MERKLE_TREE)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
assert test_channel.contract_balance == our_state.contract_balance
assert test_channel.transferred_amount == our_state.transferred_amount
assert test_channel.distributable == our_state.contract_balance
assert test_channel.outstanding == our_state.amount_locked
assert test_channel.outstanding == 0
assert test_channel.locked == partner_state.amount_locked
assert test_channel.our_state.amount_locked == 0
assert test_channel.partner_state.amount_locked == 0
assert test_channel.get_next_nonce() == 1
with pytest.raises(ValueError):
test_channel.create_directtransfer(
-10,
identifier=1,
)
with pytest.raises(ValueError):
test_channel.create_directtransfer(
balance1 + 10,
identifier=1,
)
amount1 = 10
directtransfer = test_channel.create_directtransfer(
amount1,
identifier=1,
)
directtransfer.sign(privkey1, address1)
test_channel.register_transfer(
block_number,
directtransfer,
)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1
assert test_channel.transferred_amount == amount1
assert test_channel.distributable == balance1 - amount1
assert test_channel.outstanding == 0
assert test_channel.locked == 0
assert test_channel.our_state.amount_locked == 0
assert test_channel.partner_state.amount_locked == 0
assert test_channel.get_next_nonce() == 2
secret = sha3('test_channel')
hashlock = sha3(secret)
amount2 = 10
fee = 0
expiration = block_number + settle_timeout - 5
identifier = 1
mediatedtransfer = test_channel.create_mediatedtransfer(
address1,
address2,
fee,
amount2,
identifier,
expiration,
hashlock,
)
mediatedtransfer.sign(privkey1, address1)
test_channel.register_transfer(
block_number,
mediatedtransfer,
)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1
assert test_channel.transferred_amount == amount1
assert test_channel.distributable == balance1 - amount1 - amount2
assert test_channel.outstanding == 0
assert test_channel.locked == amount2
assert test_channel.our_state.amount_locked == amount2
assert test_channel.partner_state.amount_locked == 0
assert test_channel.get_next_nonce() == 3
secret_message = test_channel.create_secret(identifier, secret)
secret_message.sign(privkey1, address1)
test_channel.register_transfer(block_number, secret_message)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1 - amount2
assert test_channel.transferred_amount == amount1 + amount2
assert test_channel.distributable == balance1 - amount1 - amount2
assert test_channel.outstanding == 0
assert test_channel.locked == 0
assert test_channel.our_state.amount_locked == 0
assert test_channel.partner_state.amount_locked == 0
assert test_channel.get_next_nonce() == 4
def test_receiver_cannot_spend_locked_amount():
token_address = make_address()
privkey1, address1 = make_privkey_address()
privkey2, address2 = make_privkey_address()
balance1 = 33
balance2 = 11
reveal_timeout = 7
settle_timeout = 21
block_number = 7
our_state = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
partner_state = ChannelEndState(address2, balance2, None, EMPTY_MERKLE_TREE)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
amount1 = balance2
expiration = block_number + settle_timeout
receive_mediated_transfer0 = test_channel.create_mediatedtransfer(
address1,
address2,
fee=0,
amount=amount1,
identifier=1,
expiration=expiration,
hashlock=sha3('test_locked_amount_cannot_be_spent'),
)
receive_mediated_transfer0.sign(privkey2, address2)
test_channel.register_transfer(
block_number,
receive_mediated_transfer0,
)
# trying to send one unit of the locked token
amount2 = balance1 + 1
lock2 = Lock(
amount=amount2,
expiration=expiration,
hashlock=sha3('test_locked_amount_cannot_be_spent2'),
)
layers = compute_layers([sha3(lock2.as_bytes)])
tree2 = MerkleTreeState(layers)
locksroot2 = merkleroot(tree2)
send_mediated_transfer0 = MediatedTransfer(
identifier=1,
nonce=1,
token=token_address,
channel=test_channel.channel_address,
transferred_amount=0,
recipient=address2,
locksroot=locksroot2,
lock=lock2,
target=address2,
initiator=address1,
fee=0,
)
send_mediated_transfer0.sign(privkey1, address1)
# address1 balance is all locked
with pytest.raises(InsufficientBalance):
test_channel.register_transfer(
block_number,
send_mediated_transfer0,
)
def test_sender_cannot_overspend():
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
block_number = 10
our_state = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
partner_state = ChannelEndState(address2, balance2, None, EMPTY_MERKLE_TREE)
external_state = make_external_state()
test_channel = Channel(
our_state,
partner_state,
external_state,
token_address,
reveal_timeout,
settle_timeout,
)
amount = balance1
expiration = block_number + settle_timeout
sent_mediated_transfer0 = test_channel.create_mediatedtransfer(
address1,
address2,
fee=0,
amount=amount,
identifier=1,
expiration=expiration,
hashlock=sha3('test_locked_amount_cannot_be_spent'),
)
sent_mediated_transfer0.sign(privkey1, address1)
test_channel.register_transfer(
block_number,
sent_mediated_transfer0,
)
lock2 = Lock(
amount=amount,
expiration=expiration,
hashlock=sha3('test_locked_amount_cannot_be_spent2'),
)
leaves = [
sha3(sent_mediated_transfer0.lock.as_bytes),
sha3(lock2.as_bytes),
]
tree2 = MerkleTreeState(compute_layers(leaves))
locksroot2 = merkleroot(tree2)
sent_mediated_transfer1 = MediatedTransfer(
identifier=2,
nonce=sent_mediated_transfer0.nonce + 1,
token=token_address,
channel=test_channel.channel_address,
transferred_amount=0,
recipient=address2,
locksroot=locksroot2,
lock=lock2,
target=address2,
initiator=address1,
fee=0,
)
sent_mediated_transfer1.sign(privkey1, address1)
# address1 balance is all locked
with pytest.raises(InsufficientBalance):
test_channel.register_transfer(
block_number,
sent_mediated_transfer1,
)
def test_python_channel():
asset_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
our_state = ChannelEndState(address1, balance1)
partner_state = ChannelEndState(address2, balance2)
external_state = make_external_state()
test_channel = Channel(
our_state, partner_state, external_state,
asset_address, reveal_timeout, settle_timeout,
)
assert test_channel.contract_balance == our_state.contract_balance
assert test_channel.balance == our_state.balance(partner_state)
assert test_channel.transferred_amount == our_state.transferred_amount
assert test_channel.distributable == our_state.distributable(partner_state)
assert test_channel.outstanding == our_state.locked()
assert test_channel.outstanding == 0
assert test_channel.locked == partner_state.locked()
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == 0
with pytest.raises(ValueError):
test_channel.create_directtransfer(
-10,
1 # TODO: fill in identifier
)
with pytest.raises(ValueError):
test_channel.create_directtransfer(
balance1 + 10,
1 # TODO: fill in identifier
)
amount1 = 10
directtransfer = test_channel.create_directtransfer(
amount1,
1 # TODO: fill in identifier
)
directtransfer.sign(privkey1, address1)
test_channel.register_transfer(directtransfer)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1
assert test_channel.transferred_amount == amount1
assert test_channel.distributable == balance1 - amount1
assert test_channel.outstanding == 0
assert test_channel.locked == 0
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == 0
secret = sha3('test_channel')
hashlock = sha3(secret)
amount2 = 10
fee = 0
expiration = settle_timeout - 5
mediatedtransfer = test_channel.create_mediatedtransfer(
address1,
address2,
fee,
amount2,
1, # TODO: fill in identifier
expiration,
hashlock,
)
mediatedtransfer.sign(privkey1, address1)
test_channel.register_transfer(mediatedtransfer)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1
assert test_channel.transferred_amount == amount1
assert test_channel.distributable == balance1 - amount1 - amount2
assert test_channel.outstanding == 0
assert test_channel.locked == amount2
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == amount2
test_channel.release_lock(secret)
assert test_channel.contract_balance == balance1
assert test_channel.balance == balance1 - amount1 - amount2
assert test_channel.transferred_amount == amount1 + amount2
assert test_channel.distributable == balance1 - amount1 - amount2
assert test_channel.outstanding == 0
assert test_channel.locked == 0
assert test_channel.our_state.locked() == 0
assert test_channel.partner_state.locked() == 0
def test_end_state():
asset_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
lock_secret = sha3('test_end_state')
lock_amount = 30
lock_expiration = 10
lock_hashlock = sha3(lock_secret)
state1 = ChannelEndState(address1, balance1)
state2 = ChannelEndState(address2, balance2)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == 0
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is False
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == ''
lock = Lock(
lock_amount,
lock_expiration,
lock_hashlock,
)
lock_hash = sha3(lock.as_bytes)
transferred_amount = 0
locksroot = state2.compute_merkleroot_with(lock)
locked_transfer = LockedTransfer(
1, # TODO: fill in identifier
nonce=state1.nonce,
asset=asset_address,
transferred_amount=transferred_amount,
recipient=state2.address,
locksroot=locksroot,
lock=lock,
)
transfer_target = make_address()
transfer_initiator = make_address()
fee = 0
mediated_transfer = locked_transfer.to_mediatedtransfer(
transfer_target,
transfer_initiator,
fee,
)
mediated_transfer.sign(privkey1, address1)
state2.register_locked_transfer(mediated_transfer)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == lock_amount
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is True
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == lock_hash
with pytest.raises(ValueError):
state1.update_contract_balance(balance1 - 10)
state1.update_contract_balance(balance1 + 10)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount + 10
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == lock_amount
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is True
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == lock_hash
# registering the secret should not change the locked amount
state2.register_secret(lock_secret)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount + 10
assert state2.distributable(state1) == balance2
assert state1.locked() == 0
assert state2.locked() == lock_amount
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is False
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == lock_hash
state2.release_lock(state1, lock_secret)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10 - lock_amount
assert state2.balance(state1) == balance2 + lock_amount
assert state1.distributable(state2) == balance1 + 10 - lock_amount
assert state2.distributable(state1) == balance2 + lock_amount
assert state1.locked() == 0
assert state2.locked() == 0
assert state1.balance_proof.is_pending(lock_hashlock) is False
assert state2.balance_proof.is_pending(lock_hashlock) is False
assert state1.balance_proof.merkleroot_for_unclaimed() == ''
assert state2.balance_proof.merkleroot_for_unclaimed() == ''
def register_channel(self, netting_channel, reveal_timeout):
""" Register a new channel.
Args:
netting_channel (network.rpc.client.NettingChannel): The netting channel proxy.
reveal_timeout (int): Minimum number of blocks required by this
node to see a secret.
Raises:
ValueError:
- If raiden.address is not one of the participants in the
netting channel.
- If the contract's settle_timeout is smaller than the
reveal_timeout.
"""
# pylint: disable=too-many-locals
translator = ContractTranslator(NETTING_CHANNEL_ABI)
# Race condition:
# - If the filter is installed after the call to `details` a deposit
# can be missed, to avoid this the listener is installed first.
# - Because of the above a `ChannelNewBalance` event can be polled
# after the `details` calls succeds so the effects must be
# idempotent.
netting_channel_events = netting_channel.all_events_filter()
channel_details = netting_channel.detail(self.raiden.address)
our_state = ChannelEndState(
channel_details['our_address'],
channel_details['our_balance'],
netting_channel.opened,
)
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
netting_channel.opened,
)
external_state = ChannelExternalState(
self.raiden.alarm.register_callback,
self.register_channel_for_hashlock,
self.raiden.get_block_number,
netting_channel,
)
channel = Channel(
our_state,
partner_state,
external_state,
self.token_address,
reveal_timeout,
channel_details['settle_timeout'],
)
self.partneraddress_channel[partner_state.address] = channel
self.address_channel[netting_channel.address] = channel
self.raiden.start_event_listener(
'NettingChannel Event {}'.format(pex(netting_channel.address)),
netting_channel_events,
translator,
)
def test_channel():
class NettingChannelMock(object):
def opened(self):
return 1
def closed(self):
return 0
def settled(self):
return 0
asset_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
balance1 = 70
balance2 = 110
reveal_timeout = 5
settle_timeout = 15
our_state = ChannelEndState(address1, balance1)
partner_state = ChannelEndState(address2, balance2)
block_alarm = list()
channel_for_hashlock = list()
netting_channel = NettingChannelMock()
external_state = ChannelExternalState(
block_alarm.append,
lambda *args: channel_for_hashlock.append(args),
lambda: 1,
netting_channel,
)
channel = Channel(
our_state,
partner_state,
external_state,
asset_address,
reveal_timeout,
settle_timeout,
)
assert channel.contract_balance == our_state.contract_balance
assert channel.balance == our_state.balance(partner_state)
assert channel.transfered_amount == our_state.transfered_amount
assert channel.distributable == our_state.distributable(partner_state)
assert channel.outstanding == our_state.locked()
assert channel.outstanding == 0
assert channel.locked == partner_state.locked()
assert channel.our_state.locked() == 0
assert channel.partner_state.locked() == 0
with pytest.raises(ValueError):
channel.create_directtransfer(-10)
with pytest.raises(ValueError):
channel.create_directtransfer(balance1 + 10)
amount1 = 10
directtransfer = channel.create_directtransfer(amount1)
directtransfer.sign(privkey1, address1)
channel.register_transfer(directtransfer)
assert channel.contract_balance == balance1
assert channel.balance == balance1 - amount1
assert channel.transfered_amount == amount1
assert channel.distributable == balance1 - amount1
assert channel.outstanding == 0
assert channel.locked == 0
assert channel.our_state.locked() == 0
assert channel.partner_state.locked() == 0
secret = sha3('test_channel')
hashlock = sha3(secret)
amount2 = 10
fee = 0
expiration = settle_timeout - 5
mediatedtransfer = channel.create_mediatedtransfer(
address1,
address2,
fee,
amount2,
expiration,
hashlock,
)
mediatedtransfer.sign(privkey1, address1)
channel.register_transfer(mediatedtransfer)
assert channel.contract_balance == balance1
assert channel.balance == balance1 - amount1
assert channel.transfered_amount == amount1
assert channel.distributable == balance1 - amount1 - amount2
assert channel.outstanding == 0
assert channel.locked == amount2
assert channel.our_state.locked() == 0
assert channel.partner_state.locked() == amount2
channel.claim_lock(secret)
assert channel.contract_balance == balance1
assert channel.balance == balance1 - amount1 - amount2
assert channel.transfered_amount == amount1 + amount2
assert channel.distributable == balance1 - amount1 - amount2
assert channel.outstanding == 0
assert channel.locked == 0
assert channel.our_state.locked() == 0
assert channel.partner_state.locked() == 0
def restore_channel(self, serialized_channel):
token_address = serialized_channel.token_address
netting_channel = self.chain.netting_channel(
serialized_channel.channel_address, )
# restoring balances from the blockchain since the serialized
# value could be falling behind.
channel_details = netting_channel.detail()
# our_address is checked by detail
assert channel_details[
'partner_address'] == serialized_channel.partner_address
if serialized_channel.our_leaves:
our_layers = compute_layers(serialized_channel.our_leaves)
our_tree = MerkleTreeState(our_layers)
else:
our_tree = EMPTY_MERKLE_TREE
our_state = ChannelEndState(
channel_details['our_address'],
channel_details['our_balance'],
serialized_channel.our_balance_proof,
our_tree,
)
if serialized_channel.partner_leaves:
partner_layers = compute_layers(serialized_channel.partner_leaves)
partner_tree = MerkleTreeState(partner_layers)
else:
partner_tree = EMPTY_MERKLE_TREE
partner_state = ChannelEndState(
channel_details['partner_address'],
channel_details['partner_balance'],
serialized_channel.partner_balance_proof,
partner_tree,
)
def register_channel_for_hashlock(channel, hashlock):
self.register_channel_for_hashlock(
token_address,
channel,
hashlock,
)
external_state = ChannelExternalState(
register_channel_for_hashlock,
netting_channel,
)
details = ChannelDetails(
serialized_channel.channel_address,
our_state,
partner_state,
external_state,
serialized_channel.reveal_timeout,
channel_details['settle_timeout'],
)
graph = self.token_to_channelgraph[token_address]
graph.add_channel(details)
channel = graph.address_to_channel.get(
serialized_channel.channel_address, )
channel.our_state.balance_proof = serialized_channel.our_balance_proof
channel.partner_state.balance_proof = serialized_channel.partner_balance_proof
def test_end_state():
token_address = make_address()
privkey1, address1 = make_privkey_address()
address2 = make_address()
channel_address = make_address()
balance1 = 70
balance2 = 110
lock_secret = sha3(b'test_end_state')
lock_amount = 30
lock_expiration = 10
lock_hashlock = sha3(lock_secret)
state1 = ChannelEndState(address1, balance1, None, EMPTY_MERKLE_TREE)
state2 = ChannelEndState(address2, balance2, None, EMPTY_MERKLE_TREE)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.is_locked(lock_hashlock) is False
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == EMPTY_MERKLE_ROOT
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is None
assert state2.nonce is None
lock = Lock(
lock_amount,
lock_expiration,
lock_hashlock,
)
lock_hash = sha3(lock.as_bytes)
transferred_amount = 0
locksroot = state2.compute_merkleroot_with(lock)
locked_transfer = LockedTransfer(
1,
nonce=1,
token=token_address,
channel=channel_address,
transferred_amount=transferred_amount,
recipient=state2.address,
locksroot=locksroot,
lock=lock,
)
transfer_target = make_address()
transfer_initiator = make_address()
fee = 0
mediated_transfer = locked_transfer.to_mediatedtransfer(
transfer_target,
transfer_initiator,
fee,
)
mediated_transfer.sign(privkey1, address1)
state1.register_locked_transfer(mediated_transfer)
assert state1.contract_balance == balance1
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount
assert state2.distributable(state1) == balance2
assert state1.amount_locked == lock_amount
assert state2.amount_locked == 0
assert state1.is_locked(lock_hashlock) is True
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == lock_hash
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 1
assert state2.nonce is None
with pytest.raises(ValueError):
state1.update_contract_balance(balance1 - 10)
state1.update_contract_balance(balance1 + 10)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.distributable(state2) == balance1 - lock_amount + 10
assert state2.distributable(state1) == balance2
assert state1.amount_locked == lock_amount
assert state2.amount_locked == 0
assert state1.is_locked(lock_hashlock) is True
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == lock_hash
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 1
assert state2.nonce is None
# registering the secret should not change the locked amount
state1.register_secret(lock_secret)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10
assert state2.balance(state1) == balance2
assert state1.is_locked(lock_hashlock) is False
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == lock_hash
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 1
assert state2.nonce is None
secret_message = Secret(
identifier=1,
nonce=2,
channel=channel_address,
transferred_amount=transferred_amount + lock_amount,
locksroot=EMPTY_MERKLE_ROOT,
secret=lock_secret,
)
secret_message.sign(privkey1, address1)
state1.register_secretmessage(secret_message)
assert state1.contract_balance == balance1 + 10
assert state2.contract_balance == balance2
assert state1.balance(state2) == balance1 + 10 - lock_amount
assert state2.balance(state1) == balance2 + lock_amount
assert state1.distributable(state2) == balance1 + 10 - lock_amount
assert state2.distributable(state1) == balance2 + lock_amount
assert state1.amount_locked == 0
assert state2.amount_locked == 0
assert state1.is_locked(lock_hashlock) is False
assert state2.is_locked(lock_hashlock) is False
assert merkleroot(state1.merkletree) == EMPTY_MERKLE_ROOT
assert merkleroot(state2.merkletree) == EMPTY_MERKLE_ROOT
assert state1.nonce is 2
assert state2.nonce is None