def get_channel(
self,
registry_address: typing.PaymentNetworkID,
token_address: typing.TokenAddress,
partner_address: typing.Address,
) -> NettingChannelState:
if not is_binary_address(token_address):
raise InvalidAddress(
'Expected binary address format for token in get_channel')
if not is_binary_address(partner_address):
raise InvalidAddress(
'Expected binary address format for partner in get_channel')
channel_list = self.get_channel_list(registry_address, token_address,
partner_address)
assert len(channel_list) <= 1
if not channel_list:
raise ChannelNotFound(
"Channel with partner '{}' for token '{}' could not be found.".
format(
to_checksum_address(partner_address),
to_checksum_address(token_address),
), )
return channel_list[0]
def get_channel(self, registry_address, channel_address):
if not is_binary_address(channel_address):
raise InvalidAddress('Expected binary address format for channel in get_channel')
channel_list = self.get_channel_list(registry_address)
for channel in channel_list:
if channel.identifier == channel_address:
return channel
raise ChannelNotFound()
def get_channel(self, channel_address):
if not isaddress(channel_address):
raise InvalidAddress(
'Expected binary address format for channel in get_channel')
channel_list = self.get_channel_list()
for channel in channel_list:
if channel.channel_address == channel_address:
return channel
raise ChannelNotFound()
def _transform_snapshot(raw_snapshot: str) -> str:
"""
This migration upgrades the object:
- `MediatorTransferState` such that a list of routes is added
to the state to be able to route a waiting transfer in case the
receiving node comes back online.
"""
snapshot = json.loads(raw_snapshot)
secrethash_to_task = snapshot["payment_mapping"]["secrethashes_to_task"]
for task in secrethash_to_task.values():
if task["_type"] != "raiden.transfer.state.MediatorTask":
continue
mediator_state = task.get("mediator_state")
# Make sure the old meditor_state was not migrated already.
assert "routes" not in mediator_state
mediator_state["routes"] = []
waiting_transfer = mediator_state.get("waiting_transfer")
if waiting_transfer is None:
continue
transfer = waiting_transfer.get("transfer")
token_network_identifier = transfer["balance_proof"][
"token_network_identifier"]
token_network = get_token_network_by_identifier(
snapshot, token_network_identifier)
channel_identifier = transfer["balance_proof"]["channel_identifier"]
channel = None
if token_network is not None:
channel = token_network.get("channelidentifiers_to_channels",
{}).get(channel_identifier)
if not channel:
raise ChannelNotFound(
f"Upgrading to v18 failed. "
f"Could not find channel with identifier {channel_identifier} "
f"in the current chain state.")
# Only add the route for which the waiting transfer was intended.
# At the time of migration, we cannot re-calculate the list of routes
# that were originally calculated when the transfer was being
# mediated so this step should be sufficient for now.
mediator_state["routes"] = [
RouteState.from_dict({
"node_address":
channel["partner_state"]["address"],
"channel_identifier":
channel_identifier,
}).to_dict()
]
return json.dumps(snapshot)
def _transform_snapshot(raw_snapshot: Dict[Any, Any]) -> str:
"""
This migration upgrades the object:
- `MediatorTransferState` such that a list of routes is added
to the state to be able to route a waiting transfer in case the
receiving node comes back online.
"""
snapshot = json.loads(raw_snapshot)
secrethash_to_task = snapshot['payment_mapping']['secrethashes_to_task']
for task in secrethash_to_task.values():
if task['_type'] != 'raiden.transfer.state.MediatorTask':
continue
mediator_state = task.get('mediator_state')
# Make sure the old meditor_state was not migrated already.
assert 'routes' not in mediator_state
mediator_state['routes'] = []
waiting_transfer = mediator_state.get('waiting_transfer')
if waiting_transfer is None:
continue
transfer = waiting_transfer.get('transfer')
token_network_identifier = transfer['balance_proof'][
'token_network_identifier']
token_network = get_token_network_by_identifier(
snapshot,
token_network_identifier,
)
channel_identifier = transfer['balance_proof']['channel_identifier']
channel = token_network.get('channelidentifiers_to_channels').get(
channel_identifier)
if not channel:
raise ChannelNotFound(
'Upgrading to v18 failed. '
f'Could not find channel with identifier {channel_identifier} '
'in the current chain state.', )
# Only add the route for which the waiting transfer was intended.
# At the time of migration, we cannot re-calculate the list of routes
# that were originally calculated when the transfer was being
# mediated so this step should be sufficient for now.
mediator_state['routes'] = [
RouteState.from_dict({
'node_address':
channel['partner_state']['address'],
'channel_identifier':
channel_identifier,
}).to_dict(),
]
return json.dumps(snapshot)
def get_channel(self, registry_address, token_address, partner_address):
if not is_binary_address(token_address):
raise InvalidAddress(
'Expected binary address format for token in get_channel')
if not is_binary_address(partner_address):
raise InvalidAddress(
'Expected binary address format for partner in get_channel')
channel_identifer = calculate_channel_identifier(
self.raiden.address, partner_address)
channel_list = self.get_channel_list(registry_address, token_address,
partner_address)
for channel in channel_list:
if channel.identifier == channel_identifer:
return channel
raise ChannelNotFound(
"Channel with partner '{}' for token '{}' could not be found.".
format(
to_checksum_address(partner_address),
to_checksum_address(token_address),
), )