277 lines
15 KiB
Python
277 lines
15 KiB
Python
from datetime import timedelta, datetime, date, time
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from zoneinfo import ZoneInfo
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import requests
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from django.core.management import BaseCommand
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from django.db.models import Q
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from sncfgtfs.gtfs_realtime_pb2 import FeedMessage
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from sncfgtfs.models import Agency, Calendar, CalendarDate, ExceptionType, LocationType, PickupType, \
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Route, RouteType, Stop, StopScheduleRelationship, StopTime, StopTimeUpdate, \
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Trip, TripUpdate, TripScheduleRelationship
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class Command(BaseCommand):
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help = "Update the SNCF GTFS Realtime database."
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GTFS_RT_FEEDS = {
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"TGV": "https://proxy.transport.data.gouv.fr/resource/sncf-tgv-gtfs-rt-trip-updates",
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"IC": "https://proxy.transport.data.gouv.fr/resource/sncf-ic-gtfs-rt-trip-updates",
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"TER": "https://proxy.transport.data.gouv.fr/resource/sncf-ter-gtfs-rt-trip-updates",
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"TI": "https://thello.axelor.com/public/gtfs/GTFS-RT.bin",
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}
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def add_arguments(self, parser):
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parser.add_argument('--debug', '-d', action='store_true', help="Activate debug mode")
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def handle(self, debug=False, *args, **options):
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for feed_type, feed_url in self.GTFS_RT_FEEDS.items():
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self.stdout.write(f"Updating {feed_type} feed...")
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feed_message = FeedMessage()
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feed_message.ParseFromString(requests.get(feed_url).content)
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stop_times_updates = []
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if debug:
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with open(f'feed_message-{feed_type}.txt', 'w') as f:
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f.write(str(feed_message))
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for entity in feed_message.entity:
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if entity.HasField("trip_update"):
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trip_update = entity.trip_update
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trip_id = trip_update.trip.trip_id
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if feed_type in ["TGV", "IC", "TER"]:
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trip_id = trip_id.split(":", 1)[0]
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start_date = date(year=int(trip_update.trip.start_date[:4]),
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month=int(trip_update.trip.start_date[4:6]),
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day=int(trip_update.trip.start_date[6:]))
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start_dt = datetime.combine(start_date, time(0), tzinfo=ZoneInfo("Europe/Paris"))
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if trip_update.trip.schedule_relationship == TripScheduleRelationship.ADDED:
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# C'est un trajet nouveau. On crée le trajet associé.
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self.create_trip(trip_update, trip_id, start_dt, feed_type)
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if not Trip.objects.filter(id=trip_id).exists():
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self.stdout.write(f"Trip {trip_id} does not exist in the GTFS feed.")
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continue
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# Création du TripUpdate
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tu, _created = TripUpdate.objects.update_or_create(
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trip_id=trip_id,
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start_date=trip_update.trip.start_date,
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start_time=trip_update.trip.start_time,
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defaults=dict(
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schedule_relationship=trip_update.trip.schedule_relationship,
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)
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)
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for stop_sequence, stop_time_update in enumerate(trip_update.stop_time_update):
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stop_id = stop_time_update.stop_id
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if stop_id.startswith('StopArea:'):
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# On est dans le cadre d'une gare. On cherche le quai associé.
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if StopTime.objects.filter(trip_id=trip_id, stop__parent_station_id=stop_id).exists():
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# U
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stop = StopTime.objects.get(trip_id=trip_id, stop__parent_station_id=stop_id).stop
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else:
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stops = [s for s in Stop.objects.filter(parent_station_id=stop_id).all()
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for s2 in StopTime.objects.filter(trip_id=trip_id).all()
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if s.stop_type in s2.stop.stop_type
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or s2.stop.stop_type in s.stop_type]
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stop = stops[0] if stops else Stop.objects.get(id=stop_id)
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st, _created = StopTime.objects.update_or_create(
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id=f"{trip_id}-{stop.id}",
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trip_id=trip_id,
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stop_id=stop.id,
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defaults={
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"stop_sequence": stop_sequence,
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"arrival_time": datetime.fromtimestamp(stop_time_update.arrival.time,
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tz=ZoneInfo("Europe/Paris")) - start_dt,
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"departure_time": datetime.fromtimestamp(stop_time_update.departure.time,
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tz=ZoneInfo("Europe/Paris")) - start_dt,
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"pickup_type": (PickupType.REGULAR if stop_time_update.departure.time
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else PickupType.NONE),
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"drop_off_type": (PickupType.REGULAR if stop_time_update.arrival.time
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else PickupType.NONE),
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}
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)
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elif stop_time_update.schedule_relationship == StopScheduleRelationship.SKIPPED:
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st = StopTime.objects.get(Q(stop=stop_id) | Q(stop__parent_station_id=stop_id),
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trip_id=trip_id)
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if st.pickup_type != PickupType.NONE or st.drop_off_type != PickupType.NONE:
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st.pickup_type = PickupType.NONE
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st.drop_off_type = PickupType.NONE
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st.save()
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else:
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qs = StopTime.objects.filter(Q(stop=stop_id) | Q(stop__parent_station_id=stop_id),
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trip_id=trip_id)
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if qs.count() == 1:
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st = qs.first()
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else:
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st = qs.get(stop_sequence=stop_sequence)
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if st.stop_sequence != stop_sequence:
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st.stop_sequence = stop_sequence
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st.save()
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st_update = StopTimeUpdate(
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trip_update=tu,
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stop_time=st,
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arrival_delay=timedelta(seconds=stop_time_update.arrival.delay),
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arrival_time=datetime.fromtimestamp(stop_time_update.arrival.time,
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tz=ZoneInfo("Europe/Paris")),
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departure_delay=timedelta(seconds=stop_time_update.departure.delay),
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departure_time=datetime.fromtimestamp(stop_time_update.departure.time,
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tz=ZoneInfo("Europe/Paris")),
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schedule_relationship=stop_time_update.schedule_relationship
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or StopScheduleRelationship.SCHEDULED,
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)
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stop_times_updates.append(st_update)
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else:
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self.stdout.write(str(entity))
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StopTimeUpdate.objects.bulk_create(stop_times_updates,
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update_conflicts=True,
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update_fields=['arrival_delay', 'arrival_time',
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'departure_delay', 'departure_time'],
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unique_fields=['trip_update', 'stop_time'])
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def create_trip(self, trip_update, trip_id, start_dt, feed_type):
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headsign = trip_id[5:-1]
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trip_qs = Trip.objects.all()
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trip_ids = trip_qs.values_list('id', flat=True)
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first_stop_queryset = StopTime.objects.filter(
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stop__parent_station_id=trip_update.stop_time_update[0].stop_id,
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).values('trip_id')
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last_stop_queryset = StopTime.objects.filter(
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stop__parent_station_id=trip_update.stop_time_update[-1].stop_id,
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).values('trip_id')
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trip_ids = trip_ids.intersection(first_stop_queryset).intersection(last_stop_queryset)
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# print(trip_id, trip_ids)
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for stop_sequence, stop_time_update in enumerate(trip_update.stop_time_update):
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stop_id = stop_time_update.stop_id
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st_queryset = StopTime.objects.filter(stop__parent_station_id=stop_id)
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if stop_sequence == 0:
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st_queryset = st_queryset.filter(stop_sequence=0)
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# print(stop_sequence, Stop.objects.get(id=stop_id).name, stop_time_update)
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# print(trip_ids)
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# print(st_queryset.values('trip_id').all())
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trip_ids_restrict = trip_ids.intersection(st_queryset.values('trip_id'))
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if trip_ids_restrict:
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trip_ids = trip_ids_restrict
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else:
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stop = Stop.objects.get(id=stop_id)
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self.stdout.write(self.style.WARNING(f"Warning: No trip is found passing by stop "
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f"{stop.name} ({stop_id})"))
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trip_ids = set(trip_ids)
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route_ids = set(Trip.objects.filter(id__in=trip_ids).values_list('route_id', flat=True))
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self.stdout.write(f"{len(route_ids)} routes found on trip for new train {headsign}")
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if not route_ids:
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origin_id = trip_update.stop_time_update[0].stop_id
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origin = Stop.objects.get(id=origin_id)
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destination_id = trip_update.stop_time_update[-1].stop_id
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destination = Stop.objects.get(id=destination_id)
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trip_name = f"{origin.name} - {destination.name}"
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trip_reverse_name = f"{destination.name} - {origin.name}"
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route_qs = Route.objects.filter(long_name=trip_name, transport_type=feed_type)
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route_reverse_qs = Route.objects.filter(long_name=trip_reverse_name,
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transport_type=feed_type)
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if route_qs.exists():
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route_ids = set(route_qs.values_list('id', flat=True))
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elif route_reverse_qs.exists():
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route_ids = set(route_reverse_qs.values_list('id', flat=True))
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else:
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self.stdout.write(f"Route not found for trip {trip_id} ({trip_name}). Creating new one")
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route = Route.objects.create(
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id=f"CREATED-{trip_name}",
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agency=Agency.objects.filter(routes__transport_type=feed_type).first(),
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transport_type=feed_type,
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type=RouteType.RAIL,
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short_name=trip_name,
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long_name=trip_name,
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)
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route_ids = {route.id}
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self.stdout.write(f"Route {route.id} created for trip {trip_id} ({trip_name})")
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elif len(route_ids) > 1:
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self.stdout.write(f"Multiple routes found for trip {trip_id}.")
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self.stdout.write(", ".join(route_ids))
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route_id = route_ids.pop()
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Calendar.objects.update_or_create(
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id=f"{feed_type}-new-{headsign}",
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defaults={
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"transport_type": feed_type,
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"monday": False,
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"tuesday": False,
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"wednesday": False,
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"thursday": False,
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"friday": False,
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"saturday": False,
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"sunday": False,
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"start_date": start_dt.date(),
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"end_date": start_dt.date(),
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}
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)
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CalendarDate.objects.update_or_create(
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id=f"{feed_type}-{headsign}-{trip_update.trip.start_date}",
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defaults={
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"service_id": f"{feed_type}-new-{headsign}",
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"date": trip_update.trip.start_date,
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"exception_type": ExceptionType.ADDED,
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}
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)
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Trip.objects.update_or_create(
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id=trip_id,
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defaults={
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"route_id": route_id,
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"service_id": f"{feed_type}-new-{headsign}",
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"headsign": headsign,
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"direction_id": trip_update.trip.direction_id,
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}
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)
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sample_trip = Trip.objects.filter(id__in=trip_ids, route_id=route_id)
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sample_trip = sample_trip.first() if sample_trip.exists() else None
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for stop_sequence, stop_time_update in enumerate(trip_update.stop_time_update):
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stop_id = stop_time_update.stop_id
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stop = Stop.objects.get(id=stop_id)
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if stop.location_type == LocationType.STATION:
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if not StopTime.objects.filter(trip_id=trip_id).exists():
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if sample_trip:
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stop = StopTime.objects.get(trip_id=sample_trip.id,
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stop__parent_station_id=stop_id).stop
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elif StopTime.objects.filter(trip_id=trip_id, stop__parent_station_id=stop_id).exists():
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stop = StopTime.objects.get(trip_id=trip_id, stop__parent_station_id=stop_id).stop
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else:
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stops = [s for s in Stop.objects.filter(parent_station_id=stop_id).all()
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for s2 in StopTime.objects.filter(trip_id=trip_id).all()
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if s.stop_type in s2.stop.stop_type
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or s2.stop.stop_type in s.stop_type]
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stop = stops[0] if stops else stop
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stop_id = stop.id
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arr_time = datetime.fromtimestamp(stop_time_update.arrival.time,
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tz=ZoneInfo("Europe/Paris")) - start_dt
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dep_time = datetime.fromtimestamp(stop_time_update.departure.time,
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tz=ZoneInfo("Europe/Paris")) - start_dt
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pickup_type = PickupType.REGULAR if stop_time_update.departure.time and stop_sequence > 0 \
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else PickupType.NONE
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drop_off_type = PickupType.REGULAR if stop_time_update.arrival.time \
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and stop_sequence < len(trip_update.stop_time_update) - 1 else PickupType.NONE
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StopTime.objects.update_or_create(
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id=f"{trip_id}-{stop_id}",
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trip_id=trip_id,
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defaults={
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"stop_id": stop_id,
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"stop_sequence": stop_sequence,
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"arrival_time": arr_time,
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"departure_time": dep_time,
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"pickup_type": pickup_type,
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"drop_off_type": drop_off_type,
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}
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)
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