def test_fee_info():
message: Dict = dict(
message_type='FeeInfo',
token_network_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
chain_id=1,
channel_identifier=123,
nonce=1,
percentage_fee=10000,
signature='signature'
)
assert message == Message.deserialize(message).serialize_data()
message['message_type'] = 'FeeInfo'
assert isinstance(Message.deserialize(message), FeeInfo)
def test_paths_request():
message: Dict = dict(
message_type='PathsRequest',
token_network_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
source_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
target_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
value=1000,
num_paths=1,
chain_id=1,
nonce=1,
signature='signature')
assert message == Message.deserialize(message).serialize_data()
message['message_type'] = 'PathsRequest'
assert isinstance(Message.deserialize(message), PathsRequest)
def test_serialize_deserialize(get_random_bp, get_random_privkey):
bp = get_random_bp()
privkey = get_random_privkey()
bp.signature = encode_hex(sign_data(privkey, bp.serialize_bin()))
serialized_message = bp.serialize_full()
deserialized_message = Message.deserialize(serialized_message)
assert isinstance(deserialized_message, BalanceProof)
def test_deserialize_with_required_type():
message: Dict = dict(
message_type='FeeInfo',
token_network_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
chain_id=1,
channel_identifier=123,
nonce=1,
percentage_fee=1000,
signature='signature'
)
deserialized_message = Message.deserialize(message, FeeInfo)
assert isinstance(deserialized_message, FeeInfo)
# during deserialization the `message_type` is removed, add it back
message['message_type'] = 'FeeInfo'
with pytest.raises(MessageTypeError):
Message.deserialize(message, BalanceProof)
def test_paths_reply():
message: Dict = dict(
message_type='PathsReply',
token_network_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
target_address='0x82dd0e0eA3E84D00Cc119c46Ee22060939E5D1FC',
value=1000,
chain_id=1,
nonce=1,
paths_and_fees=[{
'estimated_fee': 10000,
'paths': [['0x82dd0e0eA3E84D00Cc119c46Ee220609', '0xA3E84D00Cc119c46Ee22060939E5D1FC']]
}],
signature='signature'
)
assert message == Message.deserialize(message).serialize_data()
message['message_type'] = 'PathsReply'
assert isinstance(Message.deserialize(message), PathsReply)
def put(self, token_network_address: str, channel_id: str):
token_network_error = self._validate_token_network_argument(
token_network_address)
if token_network_error is not None:
return token_network_error
channel_id_error = self._validate_channel_id_argument(channel_id)
if channel_id_error is not None:
return channel_id_error
body = request.json
try:
balance_proof: BalanceProof = Message.deserialize(
body, BalanceProof)
except MessageTypeError:
return {'error', 'Not a BalanceProof message'}, 400
except ValidationError as val_err:
return {'error': val_err.message}, 400
# token_network_address and channel_id info is duplicate
# check that both versions match
if not is_same_address(token_network_address,
balance_proof.token_network_address):
error = 'The token network address from the balance proof ({}) ' \
'and the request ({}) do not match'
return {
'error':
error.format(balance_proof.token_network_address,
token_network_address)
}, 400
if not channel_id == str(balance_proof.channel_identifier):
error = 'The channel identifier from the balance proof ({}) ' \
'and the request ({}) do not match'
return {
'error': error.format(balance_proof.channel_identifier,
channel_id)
}, 400
# Note: signature check is performed by the PathfindingService
if not self.pathfinding_service.follows_token_network(
balance_proof.token_network_address):
return {
'error':
'Unsupported token network: {}'.format(token_network_address)
}, 400
try:
self.pathfinding_service.on_balance_proof_message(balance_proof)
except ValueError as error:
return {
'error':
'Error while updating balance proof: {}'.format(str(error))
}, 400
def run_message_callbacks(self, data):
"""Called whenever a message is received"""
# ignore if message is not a JSON
try:
json_msg = json.loads(data)
except json.decoder.JSONDecodeError:
return
# ignore message if JSON schema validation fails
try:
deserialized_msg = Message.deserialize(json_msg)
except (jsonschema.exceptions.ValidationError, MessageSignatureError,
MessageFormatError):
return
for callback in self.message_callbacks:
callback(deserialized_msg)
def run_message_callbacks(self, data):
"""Called whenever a message is received"""
# ignore if message is not a JSON
try:
json_msg = json.loads(data)
except json.decoder.JSONDecodeError as ex:
log.error('Error when reading JSON: %s', str(ex))
return
# ignore message if JSON schema validation fails
try:
deserialized_msg = Message.deserialize(json_msg)
except (jsonschema.exceptions.ValidationError,
MessageFormatError) as ex:
log.error('Error when deserializing message: %s', str(ex))
return
for callback in self.message_callbacks:
callback(deserialized_msg)
