def handle_channel_closed(raiden: "RaidenService", event: Event):
token_network_identifier = event.originating_contract
data = event.event_data
block_number = data["block_number"]
args = data["args"]
channel_identifier = args["channel_identifier"]
transaction_hash = data["transaction_hash"]
block_hash = data["block_hash"]
chain_state = views.state_from_raiden(raiden)
channel_state = views.get_channelstate_by_canonical_identifier_and_address(
chain_state=chain_state,
canonical_identifier=CanonicalIdentifier(
chain_identifier=chain_state.chain_id,
token_network_address=token_network_identifier,
channel_identifier=channel_identifier,
),
address=args['closing_participant'],
)
channel_closed: StateChange
if channel_state:
# The from address is included in the ChannelClosed event as the
# closing_participant field
if raiden.address == channel_state.our_state.address:
channel_closed = ContractReceiveChannelClosed(
transaction_hash=transaction_hash,
transaction_from=args["closing_participant"],
canonical_identifier=channel_state.canonical_identifier,
block_number=block_number,
block_hash=block_hash,
)
raiden.handle_and_track_state_change(channel_closed)
else:
# Must be a light client
latest_non_closing_balance_proof = LightClientMessageHandler.get_latest_light_client_non_closing_balance_proof(
channel_state.identifier, raiden.wal.storage)
channel_closed = ContractReceiveChannelClosedLight(
transaction_hash=transaction_hash,
transaction_from=args["closing_participant"],
canonical_identifier=channel_state.canonical_identifier,
block_number=block_number,
block_hash=block_hash,
light_client_address=channel_state.our_state.address,
latest_update_non_closing_balance_proof_data=
latest_non_closing_balance_proof)
raiden.handle_and_track_state_change(channel_closed)
else:
# This is a channel close event of a channel we're not a participant of
route_closed = ContractReceiveRouteClosed(
transaction_hash=transaction_hash,
canonical_identifier=CanonicalIdentifier(
chain_identifier=chain_state.chain_id,
token_network_address=token_network_identifier,
channel_identifier=channel_identifier,
),
block_number=block_number,
block_hash=block_hash,
)
raiden.handle_and_track_state_change(route_closed)
def handle_channel_closed(raiden, event, current_block_number):
token_network_identifier = event.originating_contract
data = event.event_data
channel_identifier = data['channel_identifier']
transaction_hash = data['transactionHash']
assert transaction_hash, 'A mined transaction must have the hash field'
channel_state = views.get_channelstate_by_token_network_identifier(
views.state_from_raiden(raiden),
token_network_identifier,
channel_identifier,
)
if channel_state:
# The from address is included in the ChannelClosed event as the
# closing_participant field
channel_closed = ContractReceiveChannelClosed(
transaction_hash=transaction_hash,
transaction_from=data['closing_participant'],
token_network_identifier=token_network_identifier,
channel_identifier=channel_identifier,
closed_block_number=data['block_number'],
)
raiden.handle_state_change(channel_closed, current_block_number)
else:
# This is a channel close event of a channel we're not a participant of
channel_closed = ContractReceiveRouteClosed(
transaction_hash=transaction_hash,
token_network_identifier=token_network_identifier,
channel_identifier=channel_identifier,
)
raiden.handle_state_change(channel_closed, current_block_number)
def handle_channel_closed(raiden: RaidenService, event: Event):
token_network_identifier = event.originating_contract
data = event.event_data
block_number = data['block_number']
args = data['args']
channel_identifier = args['channel_identifier']
transaction_hash = data['transaction_hash']
channel_state = views.get_channelstate_by_token_network_identifier(
views.state_from_raiden(raiden),
token_network_identifier,
channel_identifier,
)
if channel_state:
# The from address is included in the ChannelClosed event as the
# closing_participant field
channel_closed = ContractReceiveChannelClosed(
transaction_hash=transaction_hash,
transaction_from=args['closing_participant'],
token_network_identifier=token_network_identifier,
channel_identifier=channel_identifier,
block_number=block_number,
)
raiden.handle_state_change(channel_closed)
else:
# This is a channel close event of a channel we're not a participant of
route_closed = ContractReceiveRouteClosed(
transaction_hash=transaction_hash,
token_network_identifier=token_network_identifier,
channel_identifier=channel_identifier,
block_number=block_number,
)
raiden.handle_state_change(route_closed)
def contractreceiverouteclosed_from_event(event: DecodedEvent) -> ContractReceiveRouteClosed:
data = event.event_data
args = data["args"]
channel_identifier = args["channel_identifier"]
return ContractReceiveRouteClosed(
canonical_identifier=CanonicalIdentifier(
chain_identifier=event.chain_id,
token_network_address=TokenNetworkAddress(event.originating_contract),
channel_identifier=channel_identifier,
),
transaction_hash=event.transaction_hash,
block_number=event.block_number,
block_hash=event.block_hash,
)
def handle_channel_closed(raiden: "RaidenService", event: Event):
token_network_identifier = event.originating_contract
data = event.event_data
block_number = data["block_number"]
args = data["args"]
channel_identifier = args["channel_identifier"]
transaction_hash = data["transaction_hash"]
block_hash = data["block_hash"]
chain_state = views.state_from_raiden(raiden)
channel_state = views.get_channelstate_by_canonical_identifier(
chain_state=chain_state,
canonical_identifier=CanonicalIdentifier(
chain_identifier=chain_state.chain_id,
token_network_address=token_network_identifier,
channel_identifier=channel_identifier,
),
)
channel_closed: StateChange
if channel_state:
# The from address is included in the ChannelClosed event as the
# closing_participant field
channel_closed = ContractReceiveChannelClosed(
transaction_hash=transaction_hash,
transaction_from=args["closing_participant"],
canonical_identifier=channel_state.canonical_identifier,
block_number=block_number,
block_hash=block_hash,
)
raiden.handle_and_track_state_change(channel_closed)
else:
# This is a channel close event of a channel we're not a participant of
route_closed = ContractReceiveRouteClosed(
transaction_hash=transaction_hash,
canonical_identifier=CanonicalIdentifier(
chain_identifier=chain_state.chain_id,
token_network_address=token_network_identifier,
channel_identifier=channel_identifier,
),
block_number=block_number,
block_hash=block_hash,
)
raiden.handle_and_track_state_change(route_closed)
def test_routing_updates(
token_network_state,
our_address,
):
open_block_number = 10
pseudo_random_generator = random.Random()
pkey1, address1 = factories.make_privkey_address()
pkey2, address2 = factories.make_privkey_address()
pkey3, address3 = factories.make_privkey_address()
amount = 30
our_balance = amount + 50
channel_state = factories.make_channel(
our_balance=our_balance,
our_address=our_address,
partner_balance=our_balance,
partner_address=address1,
)
payment_network_identifier = factories.make_payment_network_identifier()
# create a new channel as participant, check graph update
channel_new_state_change = ContractReceiveChannelNew(
transaction_hash=factories.make_transaction_hash(),
token_network_identifier=token_network_state.address,
channel_state=channel_state,
)
channel_new_iteration1 = token_network.state_transition(
payment_network_identifier=payment_network_identifier,
token_network_state=token_network_state,
state_change=channel_new_state_change,
pseudo_random_generator=pseudo_random_generator,
block_number=open_block_number,
)
graph_state = channel_new_iteration1.new_state.network_graph
assert channel_state.identifier in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 1
assert graph_state.network[our_address][address1] is not None
assert len(graph_state.network.edges()) == 1
# create a new channel without being participant, check graph update
new_channel_identifier = factories.make_channel_identifier()
channel_new_state_change = ContractReceiveRouteNew(
transaction_hash=factories.make_transaction_hash(),
token_network_identifier=token_network_state.address,
channel_identifier=new_channel_identifier,
participant1=address2,
participant2=address3,
)
channel_new_iteration2 = token_network.state_transition(
payment_network_identifier=payment_network_identifier,
token_network_state=channel_new_iteration1.new_state,
state_change=channel_new_state_change,
pseudo_random_generator=pseudo_random_generator,
block_number=open_block_number + 10,
)
graph_state = channel_new_iteration2.new_state.network_graph
assert channel_state.identifier in graph_state.channel_identifier_to_participants
assert new_channel_identifier in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 2
assert graph_state.network[our_address][address1] is not None
assert graph_state.network[address2][address3] is not None
assert len(graph_state.network.edges()) == 2
# close the channel the node is a participant of, check edge is removed from graph
closed_block_number = open_block_number + 20
channel_close_state_change1 = ContractReceiveChannelClosed(
transaction_hash=factories.make_transaction_hash(),
transaction_from=channel_state.partner_state.address,
token_network_identifier=token_network_state.address,
channel_identifier=channel_state.identifier,
closed_block_number=closed_block_number,
)
channel_closed_iteration1 = token_network.state_transition(
payment_network_identifier=payment_network_identifier,
token_network_state=channel_new_iteration2.new_state,
state_change=channel_close_state_change1,
pseudo_random_generator=pseudo_random_generator,
block_number=closed_block_number,
)
graph_state = channel_closed_iteration1.new_state.network_graph
assert channel_state.identifier not in graph_state.channel_identifier_to_participants
assert new_channel_identifier in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 1
assert graph_state.network[address2][address3] is not None
assert len(graph_state.network.edges()) == 1
# close the channel the node is not a participant of, check edge is removed from graph
channel_close_state_change2 = ContractReceiveRouteClosed(
transaction_hash=factories.make_transaction_hash(),
token_network_identifier=token_network_state.address,
channel_identifier=new_channel_identifier,
)
channel_closed_iteration2 = token_network.state_transition(
payment_network_identifier=payment_network_identifier,
token_network_state=channel_closed_iteration1.new_state,
state_change=channel_close_state_change2,
pseudo_random_generator=pseudo_random_generator,
block_number=closed_block_number + 10,
)
graph_state = channel_closed_iteration2.new_state.network_graph
assert channel_state.identifier not in graph_state.channel_identifier_to_participants
assert new_channel_identifier not in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 0
assert len(graph_state.network.edges()) == 0
def test_routing_updates(token_network_state, our_address, channel_properties):
open_block_number = 10
properties, _ = channel_properties
address1 = properties.partner_state.address
address2 = factories.make_address()
address3 = factories.make_address()
pseudo_random_generator = random.Random()
channel_state = factories.create(properties)
open_block_hash = factories.make_block_hash()
# create a new channel as participant, check graph update
channel_new_state_change = ContractReceiveChannelNew(
transaction_hash=factories.make_transaction_hash(),
channel_state=channel_state,
block_number=open_block_number,
block_hash=open_block_hash,
)
channel_new_iteration1 = token_network.state_transition(
token_network_state=token_network_state,
state_change=channel_new_state_change,
block_number=open_block_number,
block_hash=open_block_hash,
pseudo_random_generator=pseudo_random_generator,
)
graph_state = channel_new_iteration1.new_state.network_graph
assert channel_state.identifier in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 1
assert graph_state.network[our_address][address1] is not None
assert len(graph_state.network.edges()) == 1
# create a new channel without being participant, check graph update
new_channel_identifier = factories.make_channel_identifier()
channel_new_state_change = ContractReceiveRouteNew(
transaction_hash=factories.make_transaction_hash(),
canonical_identifier=factories.make_canonical_identifier(
token_network_address=token_network_state.address,
channel_identifier=new_channel_identifier,
),
participant1=address2,
participant2=address3,
block_number=open_block_number,
block_hash=open_block_hash,
)
channel_new_iteration2 = token_network.state_transition(
token_network_state=channel_new_iteration1.new_state,
state_change=channel_new_state_change,
block_number=open_block_number + 10,
block_hash=factories.make_block_hash(),
pseudo_random_generator=pseudo_random_generator,
)
graph_state = channel_new_iteration2.new_state.network_graph
assert channel_state.identifier in graph_state.channel_identifier_to_participants
assert new_channel_identifier in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 2
assert graph_state.network[our_address][address1] is not None
assert graph_state.network[address2][address3] is not None
assert len(graph_state.network.edges()) == 2
# close the channel the node is a participant of, check edge is removed from graph
closed_block_number = open_block_number + 20
closed_block_hash = factories.make_block_hash()
channel_close_state_change1 = ContractReceiveChannelClosed(
transaction_hash=factories.make_transaction_hash(),
transaction_from=channel_state.partner_state.address,
canonical_identifier=channel_state.canonical_identifier,
block_number=closed_block_number,
block_hash=closed_block_hash,
)
channel_closed_iteration1 = token_network.state_transition(
token_network_state=channel_new_iteration2.new_state,
state_change=channel_close_state_change1,
block_number=closed_block_number,
block_hash=closed_block_hash,
pseudo_random_generator=pseudo_random_generator,
)
# Check that a second ContractReceiveChannelClosed events is handled properly
# This might have been sent from the other participant of the channel
# See issue #2449
channel_close_state_change2 = ContractReceiveChannelClosed(
transaction_hash=factories.make_transaction_hash(),
transaction_from=channel_state.our_state.address,
canonical_identifier=channel_state.canonical_identifier,
block_number=closed_block_number,
block_hash=closed_block_hash,
)
channel_closed_iteration2 = token_network.state_transition(
token_network_state=channel_closed_iteration1.new_state,
state_change=channel_close_state_change2,
block_number=closed_block_number,
block_hash=closed_block_hash,
pseudo_random_generator=pseudo_random_generator,
)
graph_state = channel_closed_iteration2.new_state.network_graph
assert channel_state.identifier not in graph_state.channel_identifier_to_participants
assert new_channel_identifier in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 1
assert graph_state.network[address2][address3] is not None
assert len(graph_state.network.edges()) == 1
# close the channel the node is not a participant of, check edge is removed from graph
channel_close_state_change3 = ContractReceiveRouteClosed(
transaction_hash=factories.make_transaction_hash(),
canonical_identifier=factories.make_canonical_identifier(
token_network_address=token_network_state.address,
channel_identifier=new_channel_identifier,
),
block_number=closed_block_number,
block_hash=closed_block_hash,
)
channel_closed_iteration3 = token_network.state_transition(
token_network_state=channel_closed_iteration2.new_state,
state_change=channel_close_state_change3,
block_number=closed_block_number + 10,
block_hash=factories.make_block_hash(),
pseudo_random_generator=pseudo_random_generator,
)
# Check that a second ContractReceiveRouteClosed events is handled properly.
# This might have been sent from the second participant of the channel
# See issue #2449
closed_block_plus_10_hash = factories.make_block_hash()
channel_close_state_change4 = ContractReceiveRouteClosed(
transaction_hash=factories.make_transaction_hash(),
canonical_identifier=factories.make_canonical_identifier(
token_network_address=token_network_state.address,
channel_identifier=new_channel_identifier,
),
block_number=closed_block_number + 10,
block_hash=closed_block_plus_10_hash,
)
channel_closed_iteration4 = token_network.state_transition(
token_network_state=channel_closed_iteration3.new_state,
state_change=channel_close_state_change4,
block_number=closed_block_number + 10,
block_hash=closed_block_plus_10_hash,
pseudo_random_generator=pseudo_random_generator,
)
graph_state = channel_closed_iteration4.new_state.network_graph
assert channel_state.identifier not in graph_state.channel_identifier_to_participants
assert new_channel_identifier not in graph_state.channel_identifier_to_participants
assert len(graph_state.channel_identifier_to_participants) == 0
assert len(graph_state.network.edges()) == 0
