aaa

def save_lithrometric_probe_data(request, agency_id):
    if request.method == "POST":
        try:
            json_data = json.loads(request.body)
            sn = json_data['sn']
            value = int(json_data['value'])
            device_id = int(json_data['device_id'])
            device = Device.objects.get(id=device_id)
            probe, created = LithrometricProbe.objects.update_or_create(serial_number=sn, defaults={
                "probe_value": value,
                "device": device
            })
            probe.volume_value = get_volume_for_probe_value(probe, value)
            probe.save()

            LithrometricValue.objects.create(
                lithrometric_probe=probe,
                probe_value=value,
                volume_value=probe.volume_value,
            )
            return JSONResponse({"success": True})
        except ValueError as e:
            return JSONResponse({"success": False, "err_msg": str(e)}, status=400)
        except KeyError as e:
            return JSONResponse({"success": False, "err_msg": "Missing value: " + str(e)}, status=400)
    else:
        return HttpResponse("ERROR: Invalid request method " + request.method)