def check_list(list_value, min_value, max_value, name):
if list_value is None:
return
if len(list_value) > max_value:
raise BinanceApiException(BinanceApiException.INPUT_ERROR,
"[Input] " + name + " is out of bound, the max size is " + str(max_value))
if len(list_value) < min_value:
raise BinanceApiException(BinanceApiException.INPUT_ERROR,
"[Input] " + name + " should contain " + str(min_value) + " item(s) at least")
def format_date(value, name):
if value is None:
return None
if not isinstance(value, str):
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] " + name + " must be string")
try:
new_time = time.strptime(value, "%Y-%m-%d")
return time.strftime("%Y-%m-%d", new_time)
except:
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] " + name + " is not invalid date format")
def check_response(json_wrapper):
if json_wrapper.contain_key("success"):
success = json_wrapper.get_boolean("success")
if success is False:
err_code = json_wrapper.get_int_or_default("code", "")
err_msg = json_wrapper.get_string_or_default("msg", "")
if err_code == "":
raise BinanceApiException(BinanceApiException.EXEC_ERROR, "[Executing] " + err_msg)
else:
raise BinanceApiException(BinanceApiException.EXEC_ERROR, "[Executing] " + str(err_code) + ": " + err_msg)
elif json_wrapper.contain_key("code"):
code = json_wrapper.get_int("code")
msg = json_wrapper.get_string_or_default("msg", "")
if code != 200:
raise BinanceApiException(BinanceApiException.EXEC_ERROR, "[Executing] " + str(code) + ": " + msg)
def check_range(value, min_value, max_value, name):
if value is None:
return
if min_value > value or value > max_value:
raise BinanceApiException(BinanceApiException.INPUT_ERROR,
"[Input] " + name + " is out of bound. " + str(value) + " is not in [" + str(
min_value) + "," + str(max_value) + "]")
def create_signature_with_query(secret_key, query):
if secret_key is None or secret_key == "":
raise BinanceApiException(BinanceApiException.KEY_MISSING, "Secret key are required")
signature = hmac.new(secret_key.encode(), msg=query.encode(), digestmod=hashlib.sha256).hexdigest()
return signature
def on_error(self, error_message):
if self.request.error_handler is not None:
print('error')
exception = BinanceApiException(
BinanceApiException.SUBSCRIPTION_ERROR, error_message)
self.request.error_handler(exception)
self.logger.error("[Sub][" + str(self.id) + "] " + str(error_message))
def create_signature(secret_key, builder):
if secret_key is None or secret_key == "":
raise BinanceApiException(BinanceApiException.KEY_MISSING, "Secret key are required")
# keys = builder.param_map.keys()
# query_string = '&'.join(['%s=%s' % (key, parse.quote(builder.param_map[key], safe='')) for key in keys])
query_string = builder.build_url()
signature = hmac.new(secret_key.encode(), msg=query_string.encode(), digestmod=hashlib.sha256).hexdigest()
builder.put_url("signature", signature)
def check_symbol(symbol):
if not isinstance(symbol, str):
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] symbol must be string")
if re.match(reg_ex, symbol):
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] " + symbol + " is invalid symbol")
def greater_or_equal(value, base, name):
if value is not None and value < base:
raise BinanceApiException(BinanceApiException.INPUT_ERROR,
"[Input] " + name + " should be greater than " + base)
def check_should_none(value, name):
if value is not None:
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] " + name + " should be null")
def check_currency(currency):
if not isinstance(currency, str):
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] currency must be string")
if re.match(reg_ex, currency) is not None:
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] " + currency + " is invalid currency")
def check_symbol_list(symbols):
if not isinstance(symbols, list):
raise BinanceApiException(BinanceApiException.INPUT_ERROR, "[Input] symbols in subscription is not a list")
for symbol in symbols:
check_symbol(symbol)
def __check_mandatory_field(self, name):
if name not in self.json_object:
raise BinanceApiException(BinanceApiException.RUNTIME_ERROR,
"[Json] Get json item field: " + name + " does not exist")
def on_close(self):
if self.request.error_handler is not None and self.retry_count <= 0:
exception = BinanceApiException(
BinanceApiException.SUBSCRIPTION_ERROR, "close_socket")
self.request.error_handler(exception)
self.logger.error("[Sub][" + str(self.id) + "] close_socket")