392 lines
22 KiB
Python
392 lines
22 KiB
Python
import csv
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from datetime import datetime, timedelta
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from io import BytesIO
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from zipfile import ZipFile
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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 sncfgtfs.models import Agency, Calendar, CalendarDate, FeedInfo, GTFSFeed, Route, Stop, StopTime, Transfer, Trip, \
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PickupType
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class Command(BaseCommand):
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help = "Update the SNCF GTFS database."
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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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parser.add_argument('--bulk_size', type=int, default=1000, help="Number of objects to create in bulk.")
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parser.add_argument('--dry-run', action='store_true',
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help="Do not update the database, only print what would be done.")
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parser.add_argument('--force', '-f', action='store_true', help="Force the update of the database.")
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def handle(self, debug: bool = False, bulk_size: int = 100, dry_run: bool = False, force: bool = False,
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verbosity: int = 1, *args, **options):
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if dry_run:
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self.stdout.write(self.style.WARNING("Dry run mode activated."))
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self.stdout.write("Updating database...")
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for gtfs_feed in GTFSFeed.objects.all():
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gtfs_code = gtfs_feed.code
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if not force:
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# Check if the source file was updated
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resp = requests.head(gtfs_feed.feed_url, allow_redirects=True)
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if 'ETag' in resp.headers and gtfs_feed.etag:
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if resp.headers['ETag'] == gtfs_feed.etag:
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if verbosity >= 1:
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self.stdout.write(self.style.WARNING(f"Database is already up-to-date for {gtfs_feed}."))
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continue
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if 'Last-Modified' in resp.headers and gtfs_feed.last_modified:
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last_modified = resp.headers['Last-Modified']
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last_modified = datetime.strptime(last_modified, "%a, %d %b %Y %H:%M:%S %Z") \
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.replace(tzinfo=ZoneInfo(last_modified.split(' ')[-1]))
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if last_modified <= gtfs_feed.last_modified:
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if verbosity >= 1:
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self.stdout.write(self.style.WARNING(f"Database is already up-to-date for {gtfs_feed}."))
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continue
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self.stdout.write(f"Downloading GTFS feed for {gtfs_feed}...")
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resp = requests.get(gtfs_feed.feed_url, allow_redirects=True, stream=True)
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with ZipFile(BytesIO(resp.content)) as zipfile:
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def read_file(filename):
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lines = zipfile.read(filename).decode().replace('\ufeff', '').splitlines()
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return [line.strip() for line in lines]
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agencies = []
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for agency_dict in csv.DictReader(read_file("agency.txt")):
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agency_dict: dict
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# if gtfs_code == "FR-EUROSTAR" \
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# and agency_dict['agency_id'] != 'ES' and agency_dict['agency_id'] != 'ER':
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# continue
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agency = Agency(
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id=f"{gtfs_code}-{agency_dict['agency_id']}",
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name=agency_dict['agency_name'],
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url=agency_dict['agency_url'],
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timezone=agency_dict['agency_timezone'],
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lang=agency_dict.get('agency_lang', "fr"),
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phone=agency_dict.get('agency_phone', ""),
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email=agency_dict.get('agency_email', ""),
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gtfs_feed=gtfs_feed,
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)
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agencies.append(agency)
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if agencies and not dry_run:
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Agency.objects.bulk_create(agencies,
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update_conflicts=True,
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update_fields=['name', 'url', 'timezone', 'lang', 'phone', 'email',
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'gtfs_feed'],
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unique_fields=['id'])
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agencies.clear()
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stops = []
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for stop_dict in csv.DictReader(read_file("stops.txt")):
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stop_dict: dict
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stop_id = stop_dict['stop_id']
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stop_id = f"{gtfs_code}-{stop_id}"
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parent_station_id = stop_dict.get('parent_station', None)
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parent_station_id = f"{gtfs_code}-{parent_station_id}" if parent_station_id else None
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stop = Stop(
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id=stop_id,
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name=stop_dict['stop_name'],
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desc=stop_dict.get('stop_desc', ""),
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lat=stop_dict['stop_lat'],
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lon=stop_dict['stop_lon'],
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zone_id=stop_dict.get('zone_id', ""),
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url=stop_dict.get('stop_url', ""),
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location_type=stop_dict.get('location_type', 0) or 0,
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parent_station_id=parent_station_id,
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timezone=stop_dict.get('stop_timezone', ""),
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wheelchair_boarding=stop_dict.get('wheelchair_boarding', 0),
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level_id=stop_dict.get('level_id', ""),
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platform_code=stop_dict.get('platform_code', ""),
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gtfs_feed=gtfs_feed,
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)
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stops.append(stop)
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if stops and not dry_run:
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Stop.objects.bulk_create(stops,
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batch_size=bulk_size,
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update_conflicts=True,
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update_fields=['name', 'desc', 'lat', 'lon', 'zone_id', 'url',
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'location_type', 'parent_station_id', 'timezone',
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'wheelchair_boarding', 'level_id', 'platform_code',
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'gtfs_feed'],
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unique_fields=['id'])
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stops.clear()
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routes = []
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for route_dict in csv.DictReader(read_file("routes.txt")):
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route_dict: dict
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route_id = route_dict['route_id']
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route_id = f"{gtfs_code}-{route_id}"
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route = Route(
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id=route_id,
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agency_id=f"{gtfs_code}-{route_dict['agency_id']}",
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short_name=route_dict['route_short_name'],
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long_name=route_dict['route_long_name'],
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desc=route_dict.get('route_desc', ""),
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type=route_dict['route_type'],
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url=route_dict.get('route_url', ""),
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color=route_dict.get('route_color', ""),
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text_color=route_dict.get('route_text_color', ""),
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gtfs_feed=gtfs_feed,
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)
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routes.append(route)
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if len(routes) >= bulk_size and not dry_run:
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Route.objects.bulk_create(routes,
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update_conflicts=True,
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update_fields=['agency_id', 'short_name', 'long_name', 'desc',
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'type', 'url', 'color', 'text_color',
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'gtfs_feed'],
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unique_fields=['id'])
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routes.clear()
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if routes and not dry_run:
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Route.objects.bulk_create(routes,
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update_conflicts=True,
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update_fields=['agency_id', 'short_name', 'long_name', 'desc',
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'type', 'url', 'color', 'text_color',
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'gtfs_feed'],
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unique_fields=['id'])
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routes.clear()
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Calendar.objects.filter(gtfs_feed=gtfs_feed).delete()
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calendars = {}
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if "calendar.txt" in zipfile.namelist():
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for calendar_dict in csv.DictReader(read_file("calendar.txt")):
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calendar_dict: dict
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calendar = Calendar(
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id=f"{gtfs_code}-{calendar_dict['service_id']}",
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monday=calendar_dict['monday'],
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tuesday=calendar_dict['tuesday'],
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wednesday=calendar_dict['wednesday'],
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thursday=calendar_dict['thursday'],
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friday=calendar_dict['friday'],
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saturday=calendar_dict['saturday'],
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sunday=calendar_dict['sunday'],
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start_date=calendar_dict['start_date'],
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end_date=calendar_dict['end_date'],
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gtfs_feed=gtfs_feed,
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)
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calendars[calendar.id] = calendar
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if len(calendars) >= bulk_size and not dry_run:
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Calendar.objects.bulk_create(calendars.values(),
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update_conflicts=True,
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update_fields=['monday', 'tuesday', 'wednesday', 'thursday',
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'friday', 'saturday', 'sunday', 'start_date',
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'end_date', 'gtfs_feed'],
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unique_fields=['id'])
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calendars.clear()
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if calendars and not dry_run:
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Calendar.objects.bulk_create(calendars.values(), update_conflicts=True,
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update_fields=['monday', 'tuesday', 'wednesday', 'thursday',
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'friday', 'saturday', 'sunday', 'start_date',
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'end_date', 'gtfs_feed'],
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unique_fields=['id'])
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calendars.clear()
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calendar_dates = []
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for calendar_date_dict in csv.DictReader(read_file("calendar_dates.txt")):
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calendar_date_dict: dict
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calendar_date = CalendarDate(
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id=f"{gtfs_code}-{calendar_date_dict['service_id']}-{calendar_date_dict['date']}",
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service_id=f"{gtfs_code}-{calendar_date_dict['service_id']}",
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date=calendar_date_dict['date'],
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exception_type=calendar_date_dict['exception_type'],
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)
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calendar_dates.append(calendar_date)
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if calendar_date.service_id not in calendars:
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calendar = Calendar(
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id=f"{gtfs_code}-{calendar_date_dict['service_id']}",
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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=calendar_date_dict['date'],
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end_date=calendar_date_dict['date'],
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gtfs_feed=gtfs_feed,
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)
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calendars[calendar.id] = calendar
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else:
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calendar = calendars[f"{gtfs_code}-{calendar_date_dict['service_id']}"]
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if calendar.start_date > calendar_date.date:
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calendar.start_date = calendar_date.date
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if calendar.end_date < calendar_date.date:
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calendar.end_date = calendar_date.date
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if calendar_dates and not dry_run:
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Calendar.objects.bulk_create(calendars.values(),
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batch_size=bulk_size,
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update_conflicts=True,
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update_fields=['start_date', 'end_date', 'gtfs_feed'],
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unique_fields=['id'])
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CalendarDate.objects.bulk_create(calendar_dates,
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batch_size=bulk_size,
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update_conflicts=True,
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update_fields=['service_id', 'date', 'exception_type'],
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unique_fields=['id'])
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calendars.clear()
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calendar_dates.clear()
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trips = []
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for trip_dict in csv.DictReader(read_file("trips.txt")):
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trip_dict: dict
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trip_id = trip_dict['trip_id']
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route_id = trip_dict['route_id']
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trip_id = f"{gtfs_code}-{trip_id}"
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route_id = f"{gtfs_code}-{route_id}"
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trip = Trip(
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id=trip_id,
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route_id=route_id,
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service_id=f"{gtfs_code}-{trip_dict['service_id']}",
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headsign=trip_dict.get('trip_headsign', ""),
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short_name=trip_dict.get('trip_short_name', ""),
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direction_id=trip_dict.get('direction_id', None) or None,
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block_id=trip_dict.get('block_id', ""),
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shape_id=trip_dict.get('shape_id', ""),
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wheelchair_accessible=trip_dict.get('wheelchair_accessible', None),
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bikes_allowed=trip_dict.get('bikes_allowed', None),
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gtfs_feed=gtfs_feed,
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)
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trips.append(trip)
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if len(trips) >= bulk_size and not dry_run:
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Trip.objects.bulk_create(trips,
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update_conflicts=True,
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update_fields=['route_id', 'service_id', 'headsign', 'short_name',
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'direction_id', 'block_id', 'shape_id',
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'wheelchair_accessible', 'bikes_allowed', 'gtfs_feed'],
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unique_fields=['id'])
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trips.clear()
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if trips and not dry_run:
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Trip.objects.bulk_create(trips,
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update_conflicts=True,
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update_fields=['route_id', 'service_id', 'headsign', 'short_name',
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'direction_id', 'block_id', 'shape_id',
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'wheelchair_accessible', 'bikes_allowed', 'gtfs_feed'],
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unique_fields=['id'])
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trips.clear()
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stop_times = []
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for stop_time_dict in csv.DictReader(read_file("stop_times.txt")):
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stop_time_dict: dict
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stop_id = stop_time_dict['stop_id']
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stop_id = f"{gtfs_code}-{stop_id}"
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trip_id = stop_time_dict['trip_id']
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trip_id = f"{gtfs_code}-{trip_id}"
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arr_time = stop_time_dict['arrival_time']
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arr_h, arr_m, arr_s = map(int, arr_time.split(':'))
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arr_time = arr_h * 3600 + arr_m * 60 + arr_s
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dep_time = stop_time_dict['departure_time']
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dep_h, dep_m, dep_s = map(int, dep_time.split(':'))
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dep_time = dep_h * 3600 + dep_m * 60 + dep_s
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pickup_type = stop_time_dict.get('pickup_type', 0)
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drop_off_type = stop_time_dict.get('drop_off_type', 0)
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if stop_time_dict['stop_sequence'] == "1":
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# First stop
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drop_off_type = PickupType.NONE
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elif arr_time == dep_time:
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# Last stop
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pickup_type = PickupType.NONE
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st = StopTime(
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id=f"{gtfs_code}-{stop_time_dict['trip_id']}-{stop_time_dict['stop_id']}"
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f"-{stop_time_dict['departure_time']}",
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trip_id=trip_id,
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arrival_time=timedelta(seconds=arr_time),
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departure_time=timedelta(seconds=dep_time),
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stop_id=stop_id,
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stop_sequence=stop_time_dict['stop_sequence'],
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stop_headsign=stop_time_dict.get('stop_headsign', ""),
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pickup_type=pickup_type,
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drop_off_type=drop_off_type,
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timepoint=stop_time_dict.get('timepoint', None),
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)
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stop_times.append(st)
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if len(stop_times) >= bulk_size and not dry_run:
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StopTime.objects.bulk_create(stop_times,
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update_conflicts=True,
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update_fields=['stop_id', 'arrival_time', 'departure_time',
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'stop_headsign', 'pickup_type',
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'drop_off_type', 'timepoint'],
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unique_fields=['id'])
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stop_times.clear()
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if stop_times and not dry_run:
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StopTime.objects.bulk_create(stop_times,
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update_conflicts=True,
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update_fields=['stop_id', 'arrival_time', 'departure_time',
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'stop_headsign', 'pickup_type',
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'drop_off_type', 'timepoint'],
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unique_fields=['id'])
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stop_times.clear()
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if "transfers.txt" in zipfile.namelist():
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transfers = []
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for transfer_dict in csv.DictReader(read_file("transfers.txt")):
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transfer_dict: dict
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from_stop_id = transfer_dict['from_stop_id']
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to_stop_id = transfer_dict['to_stop_id']
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from_stop_id = f"{gtfs_code}-{from_stop_id}"
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to_stop_id = f"{gtfs_code}-{to_stop_id}"
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transfer = Transfer(
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id=f"{transfer_dict['from_stop_id']}-{transfer_dict['to_stop_id']}",
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from_stop_id=from_stop_id,
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to_stop_id=to_stop_id,
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transfer_type=transfer_dict['transfer_type'],
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min_transfer_time=transfer_dict['min_transfer_time'],
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)
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transfers.append(transfer)
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if len(transfers) >= bulk_size and not dry_run:
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Transfer.objects.bulk_create(transfers,
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update_conflicts=True,
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update_fields=['transfer_type', 'min_transfer_time'],
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unique_fields=['id'])
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transfers.clear()
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if transfers and not dry_run:
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Transfer.objects.bulk_create(transfers,
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update_conflicts=True,
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update_fields=['transfer_type', 'min_transfer_time'],
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unique_fields=['id'])
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transfers.clear()
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if "feed_info.txt" in zipfile.namelist() and not dry_run:
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for feed_info_dict in csv.DictReader(read_file("feed_info.txt")):
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feed_info_dict: dict
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FeedInfo.objects.update_or_create(
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publisher_name=feed_info_dict['feed_publisher_name'],
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gtfs_feed=gtfs_feed,
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defaults=dict(
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publisher_url=feed_info_dict['feed_publisher_url'],
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lang=feed_info_dict['feed_lang'],
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start_date=feed_info_dict.get('feed_start_date', datetime.now().date()),
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end_date=feed_info_dict.get('feed_end_date', datetime.now().date()),
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version=feed_info_dict.get('feed_version', 1),
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)
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)
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if 'ETag' in resp.headers:
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gtfs_feed.etag = resp.headers['ETag']
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gtfs_feed.save()
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if 'Last-Modified' in resp.headers:
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last_modified = resp.headers['Last-Modified']
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gtfs_feed.last_modified = datetime.strptime(last_modified, "%a, %d %b %Y %H:%M:%S %Z") \
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.replace(tzinfo=ZoneInfo(last_modified.split(' ')[-1]))
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gtfs_feed.save()
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