Notes

from rest_framework.views import APIView
from rest_framework.response import Response
from dataio.main import *
from django.conf import settings
from django.core.cache.backends.base import DEFAULT_TIMEOUT
from django.core.cache import cache

CACHE_TTL = getattr(settings, 'CACHE_TTL', DEFAULT_TIMEOUT)
logger = logging.getLogger(__name__)


# Session ID will be created for every meas file
class GetSessionId(APIView):
def post(self, request):
meas_path = request.data.get('meas_path')
session_id = hash(meas_path)
session_id_str = str(session_id) # Convert to string explicitly
meas_obj = cMeasParser(meas_path)
cache.set(session_id_str, meas_obj)

return Response({"session_id": session_id_str})

# Generate Signal list
class GetSignalNames(APIView):
def post(self, request):
session_id = request.data.get('session_id')

signal_list = []
if session_id is not None:
if cache.get(session_id):
print("Data from cache ")
meas_obj = cache.get(session_id)
meas_obj.get_measurment_dataframe()
signal_list = meas_obj.get_signal_names()
return Response({"signals": signal_list[:20000]})

return Response(signal_list)

# Return signal time & value list
class GetSignalInfo(APIView):
def post(self, request):
session_id = request.data.get('session_id')
signal_list = request.data.get('signal_list')

signal_info = {}
# redis cache implementation
if session_id is not None:
if cache.get(session_id):

meas_obj = cache.get(session_id)
meas_obj.get_measurment_dataframe()

if signal_list is not None:
for signal in signal_list:
time = meas_obj.get_signal_time(signal)
values = meas_obj.get_signal_value(signal)
signal_info['x'] = time
signal_info['y'] = values
return Response({"signal_value": signal_info})

else:
print("Session id not found")
return Response(signal_info)
else:
return Response(signal_info)