def fetch_data(
session_id:str,
session:requests.Session=None,
logger:logging.Logger=None,
)->Quotecast:
""" Fetch data from the feed.
Args:
session_id (str):
API's session id.
session (requests.Session, optional):
This object will be generated if None.
Defaults to None.
logger (logging.Logger, optional):
This object will be generated if None.
Defaults to None.
Raises:
BrokenPipeError:
A new "session_id" is required.
Returns:
Quotecast:
quotecast.json_data : raw JSON data string.
quotecast.metadata.response_datetime : reception timestamp.
quotecast.metadata.request_duration : request duration.
"""
if logger is None:
logger = build_logger()
if session is None:
session = build_session()
url = f'{Endpoint.URL}/{session_id}'
request = requests.Request(method='GET', url=url)
prepped = session.prepare_request(request=request)
start_ns = time.perf_counter_ns()
response = session.send(request=prepped, verify=False)
# We could have used : response.elapsed.total_seconds()
duration_ns = time.perf_counter_ns() - start_ns
if response.text == '[{"m":"sr"}]' :
raise BrokenPipeError('A new "session_id" is required.')
quotecast = Quotecast()
quotecast.json_data = response.text
# There is no "date" header returned
# We could have used : response.cookies._now
quotecast.metadata.response_datetime.GetCurrentTime()
quotecast.metadata.request_duration.FromNanoseconds(duration_ns)
return quotecast
def test_quotecast(quotecast_api):
time.sleep(random.uniform(0, 2))
request = Quotecast.Request()
request.subscriptions['AAPL.BATS,E'].extend([
'LastDate',
'LastTime',
'LastPrice',
'LastVolume',
'AskPrice',
'BidPrice',
])
quotecast_api.subscribe(request=request)
quotecast = quotecast_api.fetch_data()
quotecast_parser = QuotecastParser()
quotecast_parser.put_quotecast(quotecast=quotecast)
ticker = quotecast_parser.ticker
ticker_dict = pb_handler.message_to_dict(message=ticker)
metrics = ticker_dict['products']['AAPL.BATS,E']['metrics']
assert 'AAPL.BATS,E' in ticker.product_list
for metric in metrics:
assert isinstance(metrics[metric], float)
def rebuild_request(self) -> Quotecast.Request:
""" Rebuild the request from history (self.__references).
Returns:
Quotecast.Request:
Request matching data-stream.
"""
references = self.references
request = Quotecast.Request()
for vwd_id, metric in references.values():
request.subscriptions[vwd_id].append(metric)
return request
# SETUP CONFIG DICT
with open('config/config.json') as config_file:
config_dict = json.load(config_file)
# SETUP CREDENTIALS
user_token = config_dict['user_token'] # HERE GOES YOUR USER_TOKEN
# SETUP API
quotecast_api = QuotecastAPI(user_token=user_token)
# CONNECTION
quotecast_api.connect()
# SUBSCRIBE TO METRICS
request = Quotecast.Request()
request.subscriptions['AAPL.BATS,E'].extend([
'LastDate',
'LastTime',
'LastPrice',
'LastVolume',
'AskPrice',
'BidPrice',
])
quotecast_api.subscribe(request=request)
# SETUP JSON PARSER
quotecast_parser = QuotecastParser()
while True:
try: