def cadence(self, request):
expanded_requests = []
for req in request.data.get('requests', []):
if isinstance(req, dict) and req.get('cadence'):
cadence_request_serializer = CadenceRequestSerializer(data=req)
if cadence_request_serializer.is_valid():
expanded_requests.extend(
expand_cadence_request(
cadence_request_serializer.validated_data))
else:
return Response(cadence_request_serializer.errors,
status=400)
else:
expanded_requests.append(req)
# if we couldn't find any valid cadence requests, return that as an error
if not expanded_requests:
return Response(
{
'errors':
'No visible requests within cadence window parameters'
},
status=400)
# now replace the originally sent requests with the cadence requests and send it back
ret_data = request.data.copy()
ret_data['requests'] = expanded_requests
if (len(ret_data['requests']) > 1):
ret_data['operator'] = 'MANY'
ur_serializer = UserRequestSerializer(data=ret_data,
context={'request': request})
if not ur_serializer.is_valid():
return Response(ur_serializer.errors, status=400)
return Response(ret_data)
def test_correct_number_of_requests_overlapping_windows(self):
r_dict = self.req.as_dict
r_dict['cadence'] = {
'start': datetime.datetime(2016, 9, 1, tzinfo=timezone.utc),
'end': datetime.datetime(2016, 9, 2, tzinfo=timezone.utc),
'period': 1.0,
'jitter': 2.0
}
requests = expand_cadence_request(r_dict)
self.assertEqual(len(requests), 5)
def test_correct_number_of_requests_large_cadence(self):
r_dict = self.req.as_dict
r_dict['cadence'] = {
'start': datetime.datetime(2016, 9, 1, tzinfo=timezone.utc),
'end': datetime.datetime(2016, 10, 1, tzinfo=timezone.utc),
'period': 24.0,
'jitter': 12.0
}
requests = expand_cadence_request(r_dict)
self.assertEqual(len(requests), 26)