def manager_by_token(self, token_address):
""" Find the channel manager for `token_address` and return a proxy to
interact with it.
If the token is not already registered it raises `EthNodeCommunicationError`,
since we try to instantiate a Channel manager with an empty address.
"""
if not isaddress(token_address):
raise ValueError('token_address must be a valid address')
if token_address not in self.token_to_channelmanager:
check_address_has_code(
self.client, token_address) # check that the token exists
manager_address = self.manager_address_by_token(token_address)
if manager_address is None:
raise NoTokenManager(
'Manager for token 0x{} does not exist'.format(
token_address.encode('hex')))
manager = ChannelManager(
self.client,
manager_address,
self.startgas,
self.gasprice,
self.poll_timeout,
)
self.token_to_channelmanager[token_address] = manager
self.address_to_channelmanager[manager_address] = manager
return self.token_to_channelmanager[token_address]
def manager(self, manager_address):
""" Return a proxy to interact with a ChannelManagerContract. """
if not is_binary_address(manager_address):
raise ValueError('manager_address must be a valid address')
if manager_address not in self.address_to_channelmanager:
manager = ChannelManager(
self.client,
manager_address,
)
token_address = manager.token_address()
self.token_to_channelmanager[token_address] = manager
self.address_to_channelmanager[manager_address] = manager
return self.address_to_channelmanager[manager_address]
def manager(self, manager_address):
""" Return a proxy to interact with a ChannelManagerContract. """
if not isaddress(manager_address):
raise ValueError('manager_address must be a valid address')
if manager_address not in self.address_to_channelmanager:
manager = ChannelManager(
self.client,
manager_address,
self.startgas,
self.gasprice,
self.poll_timeout,
)
token_address = manager.token_address()
self.token_to_channelmanager[token_address] = manager
self.address_to_channelmanager[manager_address] = manager
return self.address_to_channelmanager[manager_address]