def _send_error_message(self, error_message):
self.write_message(
json.dumps({
"type": "error-message",
"text": error_message
}))
log.error(error_message)
def find_keystore_file_path(cls, address, keystore_path):
try:
files = os.listdir(keystore_path)
except OSError as ex:
msg = "Unable to list the specified directory"
log.error("OsError", msg=msg, path=keystore_path, ex=ex)
return
for f in files:
full_path = keystore_path.joinpath(f)
if full_path.is_file():
try:
file_content = full_path.read_text()
data = json.loads(file_content)
if not isinstance(data, dict) or "address" not in data:
# we expect a dict in specific format.
# Anything else is not a keyfile
raise KeyError(f"Invalid keystore file {full_path}")
address_from_file = to_checksum_address(
to_canonical_address(data["address"]))
if address_from_file == address:
return Path(full_path)
except OSError as ex:
msg = "Can not read account file (errno=%s)" % ex.errno
log.warning(msg, path=full_path, ex=ex)
except (json.JSONDecodeError, KeyError,
UnicodeDecodeError) as ex:
# Invalid file - skip
if f.startswith("UTC--"):
# Should be a valid account file - warn user
msg = "Invalid account file"
if isinstance(ex, json.decoder.JSONDecodeError):
msg = "The account file is not valid JSON format"
log.warning(msg, path=full_path, ex=ex)
def post(self, configuration_file_name):
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
account = configuration_file.account
try_unlock(account)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
ex_currency_amt = json_decode(self.request.body)
exchange = Exchange.get_by_name(ex_currency_amt["exchange"])(w3=w3)
currency = Erc20Token.find_by_ticker(ex_currency_amt["currency"],
configuration_file.network)
token_amount = TokenAmount(ex_currency_amt["target_amount"], currency)
try:
exchange_costs = exchange.calculate_transaction_costs(
token_amount, account)
total_cost = exchange_costs["total"]
self.render_json({
"exchange": exchange.name,
"currency": currency.ticker,
"target_amount": ex_currency_amt["target_amount"],
"as_wei": total_cost.as_wei,
"formatted": total_cost.formatted,
"utc_seconds": int(time.time()),
})
except ExchangeError as ex:
log.error("There was an error preparing the exchange", exc_info=ex)
self.set_status(
status_code=409,
reason=str(ex),
)
