def api_links(request):
if request.method == 'GET':
params = extract_params(request)
_limit = _uuid = _q = None
if params:
if 'limit' in params.keys() and int(params['limit']):
_limit = int(params['limit'])
if 'uuid' in params.keys():
_uuid = params['uuid']
if _uuid or _q:
return JSONResponse(LinkSerializer(
Link.objects.filter(
uuid__exact=_uuid,
)[0:_limit],
many=True
).data)
else:
return JSONResponse(LinkSerializer(
Link.objects.all()[0:_limit],
many=True
).data)
else:
return JSONResponse(None, status=400)
def message():
"""
This function checks the command received.
Based on the command, it dynamically creates the URL and
makes a request to the NextBus service
"""
data = Response('Bad Request!Missing Parameters',
status=400,
mimetype='text')
command, agency_tag = extract_params(request)
# If the params do not contain command and agency_tag an error is returned
if not command or not agency_tag:
return data
message_url = BASE_URL + command + '&a=' + agency_tag
if command == 'messages':
# If no route is specified, get all messages
if request.args.get('r'):
routes = request.args.getlist('r')
for route in routes:
message_url = message_url + "&r=" + route
data, response_time = proxy_request(message_url)
elif command == 'vehicleLocations':
route = request.args.get('r')
# If no route is specified, get vehicleLocations for all routes
if route is not None:
message_url = message_url + '&r=' + route
time = request.args.get('t')
if time is None:
time = '0'
message_url = message_url + '&t=' + time
data, response_time = proxy_request(message_url)
update_count_db(message_url, response_time)
return data
def available_params(self):
"""
Merge parameter values into a dictionary of available parameters
:param param_values: A dictionary of Query param values.
:return: A merged dictionary of parameter names and values. Values of non-existent parameters are removed.
"""
p = extract_params(self.sql)
if self.params:
shared_dict_update(p, self.params)
return p
def prediction():
"""
This function checks the command received.
Based on the command, it dynamically creates the URL and
makes a request to the NextBus service
"""
data = Response('Bad Request!Missing parameters',
status=400,
mimetype='text')
command, agency_tag = extract_params(request)
# If request params do not contain a command or an agency, return an error
if not command or not agency_tag:
return data
prediction_url = BASE_URL + command + '&a=' + agency_tag
# Set useShortTitles flag based on the request params and update the request URL accordingly
if request.args.get('useShortTitles'):
use_short_titles = request.args.get('useShortTitles')
prediction_url = prediction_url+'&useShortTitles=' + use_short_titles
if command == 'predictions':
# Predictions has 2 contracts. Form the required one based on the request params
if request.args.get('stopId'):
stop_id = request.args.get('stopId')
prediction_url = prediction_url + '&stopId=' + stop_id
if request.args.get('r'):
route = request.args.get('r')
prediction_url = prediction_url + '&r=' + route
data, response_time = proxy_request(prediction_url)
elif request.args.get('s'):
stop_tag = request.args.get('s')
prediction_url = prediction_url + '&s=' + stop_tag
if request.args.get('r'):
route = request.args.get('r')
prediction_url = prediction_url + '&r=' + route
data, response_time = proxy_request(prediction_url)
elif command == 'predictionsForMultiStops':
if not request.args.get('stops'):
return data
stops = request.args.getlist('stops')
for stop in stops:
prediction_url = prediction_url+"&stops="+stop
data, response_time = proxy_request(prediction_url)
elif command == 'schedule':
route = request.args.get('r')
if route is None:
return data
prediction_url = prediction_url+'&r='+route
data, response_time = proxy_request(prediction_url)
update_count_db(prediction_url, response_time)
return data
def api_resources(request):
if request.method == 'GET':
params = extract_params(request)
_limit = _uuid = _q = None
resources = None
if params:
if 'limit' in params.keys() and int(params['limit']):
_limit = int(params['limit'])
if 'uuid' in params.keys():
_uuid = params['uuid']
if 'q' in params.keys() and len(params['q']) > 0:
_q = HTML_PARSER.unescape(
urllib.unquote(params['q'])
).replace('+', ' ')
if _q and len(_q) > 0:
return JSONResponse(ResourceSerializer(
Resource.objects.filter(
name__contains=_q
)[0:_limit],
many=True
).data)
elif _uuid or _q:
return JSONResponse(ResourceSerializer(
Resource.objects.filter(
uuid__exact=_uuid,
)[0:_limit],
many=True
).data)
else:
return JSONResponse(ResourceSerializer(
Resource.objects.all()[0:_limit],
many=True
).data)
else:
return JSONResponse(None, status=400)