def sign(self, method='GET', params=None, headers=None):
if self.__api_key == '' or self.__secret_key == '':
raise AuthenticationError('Api key and secret key must not be empty.')
timestamp = str(Utils.milliseconds())
if self.use_server_time:
timestamp = str(self.get_server_time())
param = ''
if method == 'GET' and params:
for k in sorted(params):
param += k + str(params[k])
elif method == 'POST' and params:
param = json.dumps(params, separators=(',', ':'))
sig_str = self.__api_key + timestamp + param + self.__secret_key
signature = hashlib.md5(sig_str.encode('utf-8')).hexdigest()
new_headers = {
'Apiid': self.__api_key,
'Timestamp': timestamp,
'Clienttype': "5",
'Sign': signature
}
if headers:
self.extend(new_headers, headers)
if hasattr(self, "_ApiClient__passphrase"):
new_headers['Passphrase'] = hashlib.md5((timestamp + self.__passphrase).encode('utf-8')).hexdigest()
return new_headers
def on_open(self, ws):
self.logger.info("[Sub][" + str(self.id) + "] Connected to server")
self.ws = ws
self.last_receive_time = Utils.milliseconds()
self.state = ConnectionState.CONNECTED
if self.request.subscription_handler is not None:
self.request.subscription_handler(self)
self.__watch_dog.on_connection_created(self)
return
def on_message(self, message):
self.last_receive_time = Utils.milliseconds()
if isinstance(message, str):
# print("RX string : ", message)
json_wrapper = json.loads(message)
elif isinstance(message, bytes):
# print("RX bytes: " + gzip.decompress(message).decode("utf-8"))
json_wrapper = json.load(gzip.decompress(message).decode("utf-8"))
else:
self.logger.error("[Sub][" + str(self.id) + "] RX unknown type : ",
type(message))
return
if 'code' in json_wrapper:
print(json_wrapper)
if '5021' == json_wrapper['code'] and 'PING' == json_wrapper[
'action']:
return
self.on_error(json_wrapper)
return
res = None
try:
if self.request.json_parser is not None:
res = self.request.json_parser(json_wrapper)
except Exception as e:
self.logger.error(
"[Sub][" + str(self.id) +
"] Failed to parse server's response", e)
self.on_error("Failed to parse server's response: " + str(e))
try:
if self.request.update_callback is not None:
self.request.update_callback(res)
except Exception as e:
self.logger.error(
"[Sub][" + str(self.id) +
"] Failed to call the callback method", e)
self.on_error(
"Process error: " + str(e) +
" You should capture the exception in your error handler")
def watch_dog_job(*args):
watch_dog_instance = args[0]
for connection in watch_dog_instance.connection_list:
if connection.state == ConnectionState.CONNECTED:
if watch_dog_instance.is_auto_connect:
ts = Utils.milliseconds() - connection.last_receive_time
if ts > watch_dog_instance.receive_limit_ms:
watch_dog_instance.logger.warning(
"[Sub][" + str(connection.id) +
"] No response from server")
connection.re_connect_in_delay(
watch_dog_instance.connection_delay_failure)
elif connection.in_delay_connection():
watch_dog_instance.logger.warning("[Sub] call re_connect")
connection.re_connect()
pass
elif connection.state == ConnectionState.CLOSED_ON_ERROR:
if watch_dog_instance.is_auto_connect:
connection.re_connect_in_delay(
watch_dog_instance.connection_delay_failure)
pass
def request(self, path, api='public', method="GET", params={}, headers=None):
if self.enable_rate_limit:
self.throttle()
self.last_rest_request_Timestamp = Utils.milliseconds()
if api == 'private':
headers = self.sign(method, params, headers)
# 设置路径参数
path = path.format(**params)
api = self.urls['market_api'] if path.find('api/data/v1') >= 0 else self.urls['api']
url = api + path
response = None
try:
if self.verbose:
print('method:', method, ', url :', url, ", request:", params)
if method == "GET":
response = requests.get(url, params=params, headers=headers)
else:
response = requests.post(url, data=json.dumps(params, separators=(',', ':')), headers=headers)
if self.verbose:
print('method:', method, ', url:', url, ", response:", response.text)
self.handle_fail(response, method, url)
return response.json()['datas']
except Timeout as e:
self.raise_error(RequestTimeout, method, url, e)
except ValueError as e:
self.raise_error(BadResponse, method, url, e, response.text)
except KeyError as e:
self.raise_error(BadResponse, method, url, e, response.text)
def throttle(self):
now = float(Utils.milliseconds())
elapsed = now - self.last_rest_request_Timestamp
if elapsed < self.rate_limit:
delay = self.rate_limit - elapsed
time.sleep(delay / 1000.0)