def post(self, request, streamId=None):
try:
readings = json.loads(request.body)
except (TypeError, ValueError):
return cors_http_response("Bad Json", 400)
if streamId is not None:
return add_readings(readings, streamId)
else:
return add_readings(readings)
def add_reading(request):
"""
' Adds a single reading to the database. To insert a reading we need a uuid from a sensor and its value
' that it wants to post.
"""
timestamp = int(time.time())
try:
uuid = request.POST["uuid"]
except KeyError:
return cors_http_response("A uuid is required", 404)
try:
value = request.POST["value"]
if value is None or value == "":
return cors_http_response("No data was passed for insertion!", 404)
except KeyError:
return cors_http_response("A value is required", 404)
try:
sensor = Sensor.objects.get(uuid=uuid)
claimedSensor = ClaimedSensor.objects.get(sensor=sensor)
datastream = DataStream.objects.get(claimed_sensor=claimedSensor)
except Sensor.DoesNotExist:
return cors_http_response("There is no sensor for the uuid '%s'" % str(uuid), 404)
except ClaimedSensor.DoesNotExist:
return cors_http_response("Sensor with uuid '%s' is not claimed!" % str(uuid), 404)
except DataStream.DoesNotExist:
return cors_http_response("There is no datastream for the sensor with uuid %s" % str(uuid), 404)
# Insert
try:
insert_reading(datastream, sensor, value, timestamp)
except SensorReadingCollision as e:
return cors_http_response(e, 500)
except ValidationError as e:
msg = "There was one or more errors while saving a sensor reading: "
msg += ", ".join([field + ": " + error for field, error in e.message_dict.iteritems()])
return cors_http_response(msg, 500)
return cors_http_response("Successfully inserted record")