def handle_channel_opened_event(
self,
channel_identifier: ChannelID,
participant1: Address,
participant2: Address,
settle_timeout: int,
) -> Channel:
""" Register the channel in the graph, add participants to graph if necessary.
Corresponds to the ChannelOpened event. Called by the contract event listener.
We swap participants unless participant1 < participant2."""
if participant1 > participant2:
(participant1, participant2) = (participant2, participant1)
channel = Channel(
token_network_address=self.address,
channel_id=channel_identifier,
participant1=participant1,
participant2=participant2,
settle_timeout=settle_timeout,
)
views = channel.views
for cv in views:
self.add_channel_view(cv)
return channel
def test_channels(pathfinding_service_mock):
# Participants need to be ordered
parts = sorted([make_address(), make_address(), make_address()])
token_network_address = TokenNetworkAddress(b"1" * 20)
# register token network internally
database = pathfinding_service_mock.database
database.upsert_token_network(token_network_address)
channel1 = Channel(
token_network_address=token_network_address,
channel_id=ChannelID(1),
participant1=parts[0],
participant2=parts[1],
settle_timeout=BlockTimeout(100),
)
channel2 = Channel(
token_network_address=token_network_address,
channel_id=ChannelID(2),
participant1=parts[1],
participant2=parts[2],
settle_timeout=BlockTimeout(100),
)
# Test `upsert_channel` and `get_channels`
database.upsert_channel(channel1)
assert [chan.channel_id
for chan in database.get_channels()] == [channel1.channel_id]
database.upsert_channel(channel2)
assert [chan.channel_id for chan in database.get_channels()] == [
channel1.channel_id,
channel2.channel_id,
]
# Test `delete_channel`
assert database.delete_channel(channel1.token_network_address,
channel1.channel_id)
assert [chan.channel_id
for chan in database.get_channels()] == [channel2.channel_id]
assert not database.delete_channel(channel1.token_network_address,
channel1.channel_id)
assert [chan.channel_id
for chan in database.get_channels()] == [channel2.channel_id]
def get_channels(self) -> Iterator[Channel]:
for row in self.conn.execute("SELECT * FROM channel"):
channel_dict = dict(zip(row.keys(), row))
channel_dict["fee_schedule1"] = json.loads(
channel_dict["fee_schedule1"])
channel_dict["fee_schedule2"] = json.loads(
channel_dict["fee_schedule2"])
yield Channel.Schema().load(channel_dict)
def test_channel_constraints(pathfinding_service_mock):
"""Regression test for https://github.com/raiden-network/raiden-services/issues/693"""
# Participants need to be ordered
parts = sorted([make_address(), make_address()])
token_network_address1 = make_token_network_address()
token_network_address2 = make_token_network_address()
# register token network internally
database = pathfinding_service_mock.database
database.upsert_token_network(token_network_address1,
DEFAULT_TOKEN_NETWORK_SETTLE_TIMEOUT)
database.upsert_token_network(token_network_address2,
DEFAULT_TOKEN_NETWORK_SETTLE_TIMEOUT)
channel1 = Channel(
token_network_address=token_network_address1,
channel_id=ChannelID(1),
participant1=parts[0],
participant2=parts[1],
)
channel2 = Channel(
token_network_address=token_network_address2,
channel_id=ChannelID(1),
participant1=parts[0],
participant2=parts[1],
)
# Test `upsert_channel` and `get_channels`
database.upsert_channel(channel1)
assert [chan.channel_id
for chan in database.get_channels()] == [channel1.channel_id]
database.upsert_channel(channel2)
assert [chan.channel_id for chan in database.get_channels()] == [
channel1.channel_id,
channel2.channel_id,
]
def upsert_channel(self, channel: Channel) -> None:
channel_dict = Channel.Schema().dump(channel)
for key in (
"channel_id",
"settle_timeout",
"capacity1",
"reveal_timeout1",
"update_nonce1",
"capacity2",
"reveal_timeout2",
"update_nonce2",
):
channel_dict[key] = hex256(int(channel_dict[key]))
channel_dict["fee_schedule1"] = json.dumps(channel_dict["fee_schedule1"])
channel_dict["fee_schedule2"] = json.dumps(channel_dict["fee_schedule2"])
self.upsert("channel", channel_dict)
def test_edge_weight(addresses):
# pylint: disable=assigning-non-slot
channel_id = ChannelID(1)
participant1 = addresses[0]
participant2 = addresses[1]
capacity = TokenAmount(int(20 * 1e18))
capacity_partner = TokenAmount(int(10 * 1e18))
channel = Channel(
token_network_address=TokenNetworkAddress(bytes([1])),
channel_id=channel_id,
participant1=participant1,
participant2=participant2,
capacity1=capacity,
capacity2=capacity_partner,
)
view, view_partner = channel.views
amount = PaymentAmount(int(1e18)) # one RDN
# no penalty
assert (TokenNetwork.edge_weight(visited={},
view=view,
view_from_partner=view_partner,
amount=amount,
fee_penalty=0) == 1)
# channel already used in a previous route
assert (TokenNetwork.edge_weight(
visited={channel_id: 2},
view=view,
view_from_partner=view_partner,
amount=amount,
fee_penalty=0,
) == 3)
# absolute fee
view.fee_schedule_sender.flat = FeeAmount(int(0.03e18))
assert (TokenNetwork.edge_weight(
visited={},
view=view,
view_from_partner=view_partner,
amount=amount,
fee_penalty=100,
) == 4)
# relative fee
view.fee_schedule_sender.flat = FeeAmount(0)
view.fee_schedule_sender.proportional = ProportionalFeeAmount(int(0.01e6))
assert (TokenNetwork.edge_weight(
visited={},
view=view,
view_from_partner=view_partner,
amount=amount,
fee_penalty=100,
) == 2)
# partner has not enough capacity for refund (no_refund_weight) -> edge weight +1
view_partner.capacity = TokenAmount(0)
assert (TokenNetwork.edge_weight(
visited={},
view=view,
view_from_partner=view_partner,
amount=amount,
fee_penalty=100,
) == 3)