mirror of
https://github.com/seanmorley15/AdventureLog.git
synced 2025-07-25 07:49:37 +02:00
262 lines
No EOL
13 KiB
Python
262 lines
No EOL
13 KiB
Python
import os
|
|
from django.core.management.base import BaseCommand
|
|
import requests
|
|
from worldtravel.models import Country, Region, City
|
|
from django.db import transaction
|
|
import ijson
|
|
import psutil
|
|
|
|
def get_memory_usage():
|
|
process = psutil.Process(os.getpid())
|
|
memory_info = process.memory_info()
|
|
return memory_info.rss # in bytes
|
|
|
|
def log_memory_usage(stage):
|
|
memory_usage = get_memory_usage()
|
|
print(f"Memory usage at {stage}: {memory_usage / 1024 / 1024:.2f} MB")
|
|
|
|
from django.conf import settings
|
|
|
|
COUNTRY_REGION_JSON_VERSION = settings.COUNTRY_REGION_JSON_VERSION
|
|
|
|
media_root = settings.MEDIA_ROOT
|
|
|
|
def saveCountryFlag(country_code):
|
|
# For standards, use the lowercase country_code
|
|
country_code = country_code.lower()
|
|
flags_dir = os.path.join(media_root, 'flags')
|
|
|
|
# Check if the flags directory exists, if not, create it
|
|
if not os.path.exists(flags_dir):
|
|
os.makedirs(flags_dir)
|
|
|
|
# Check if the flag already exists in the media folder
|
|
flag_path = os.path.join(flags_dir, f'{country_code}.png')
|
|
if os.path.exists(flag_path):
|
|
print(f'Flag for {country_code} already exists')
|
|
return
|
|
|
|
res = requests.get(f'https://flagcdn.com/h240/{country_code}.png'.lower())
|
|
if res.status_code == 200:
|
|
with open(flag_path, 'wb') as f:
|
|
f.write(res.content)
|
|
print(f'Flag for {country_code} downloaded')
|
|
else:
|
|
print(f'Error downloading flag for {country_code}')
|
|
|
|
class Command(BaseCommand):
|
|
help = 'Imports the world travel data'
|
|
|
|
def add_arguments(self, parser):
|
|
parser.add_argument('--force', action='store_true', help='Force download the countries+regions+states.json file')
|
|
|
|
def handle(self, **options):
|
|
force = options['force']
|
|
batch_size = 250
|
|
countries_json_path = os.path.join(settings.MEDIA_ROOT, f'countries+regions+states-{COUNTRY_REGION_JSON_VERSION}.json')
|
|
if not os.path.exists(countries_json_path) or force:
|
|
res = requests.get(f'https://raw.githubusercontent.com/dr5hn/countries-states-cities-database/{COUNTRY_REGION_JSON_VERSION}/json/countries%2Bstates%2Bcities.json')
|
|
if res.status_code == 200:
|
|
with open(countries_json_path, 'w') as f:
|
|
f.write(res.text)
|
|
self.stdout.write(self.style.SUCCESS('countries+regions+states.json downloaded successfully'))
|
|
else:
|
|
self.stdout.write(self.style.ERROR('Error downloading countries+regions+states.json'))
|
|
return
|
|
elif not os.path.isfile(countries_json_path):
|
|
self.stdout.write(self.style.ERROR('countries+regions+states.json is not a file'))
|
|
return
|
|
elif os.path.getsize(countries_json_path) == 0:
|
|
self.stdout.write(self.style.ERROR('countries+regions+states.json is empty'))
|
|
elif Country.objects.count() == 0 or Region.objects.count() == 0 or City.objects.count() == 0:
|
|
self.stdout.write(self.style.WARNING('Some region data is missing. Re-importing all data.'))
|
|
else:
|
|
self.stdout.write(self.style.SUCCESS('Latest country, region, and state data already downloaded.'))
|
|
return
|
|
|
|
with transaction.atomic():
|
|
# Process data in chunks using ijson
|
|
f = open(countries_json_path, 'rb')
|
|
parser = ijson.items(f, 'item')
|
|
existing_countries = {}
|
|
for country in Country.objects.iterator():
|
|
existing_countries[country.country_code] = country
|
|
existing_regions = {}
|
|
for region in Region.objects.iterator():
|
|
existing_regions[region.id] = region
|
|
existing_cities = {}
|
|
for city in City.objects.iterator():
|
|
existing_cities[city.id] = city
|
|
|
|
countries_to_create = []
|
|
regions_to_create = []
|
|
countries_to_update = []
|
|
regions_to_update = []
|
|
cities_to_create = []
|
|
cities_to_update = []
|
|
|
|
processed_country_codes = set()
|
|
processed_region_ids = set()
|
|
processed_city_ids = set()
|
|
|
|
for country in parser:
|
|
country_code = country['iso2']
|
|
country_name = country['name']
|
|
country_subregion = country['subregion']
|
|
country_capital = country['capital']
|
|
longitude = round(float(country['longitude']), 6) if country['longitude'] else None
|
|
latitude = round(float(country['latitude']), 6) if country['latitude'] else None
|
|
|
|
processed_country_codes.add(country_code)
|
|
|
|
if country_code in existing_countries:
|
|
country_obj = existing_countries[country_code]
|
|
country_obj.name = country_name
|
|
country_obj.subregion = country_subregion
|
|
country_obj.capital = country_capital
|
|
country_obj.longitude = longitude
|
|
country_obj.latitude = latitude
|
|
countries_to_update.append(country_obj)
|
|
else:
|
|
country_obj = Country(
|
|
name=country_name,
|
|
country_code=country_code,
|
|
subregion=country_subregion,
|
|
capital=country_capital,
|
|
longitude=longitude,
|
|
latitude=latitude
|
|
)
|
|
countries_to_create.append(country_obj)
|
|
|
|
saveCountryFlag(country_code)
|
|
# self.stdout.write(self.style.SUCCESS(f'Country {country_name} prepared'))
|
|
|
|
if country['states']:
|
|
for state in country['states']:
|
|
name = state['name']
|
|
state_id = f"{country_code}-{state['state_code']}"
|
|
latitude = round(float(state['latitude']), 6) if state['latitude'] else None
|
|
longitude = round(float(state['longitude']), 6) if state['longitude'] else None
|
|
|
|
# Check for duplicate regions
|
|
if state_id in processed_region_ids:
|
|
self.stdout.write(self.style.ERROR(f'State {state_id} already processed'))
|
|
continue
|
|
log_memory_usage(f"State {state_id} processing")
|
|
|
|
processed_region_ids.add(state_id)
|
|
|
|
if state_id in existing_regions:
|
|
region_obj = existing_regions[state_id]
|
|
region_obj.name = name
|
|
region_obj.country = country_obj
|
|
region_obj.longitude = longitude
|
|
region_obj.latitude = latitude
|
|
regions_to_update.append(region_obj)
|
|
else:
|
|
region_obj = Region(
|
|
id=state_id,
|
|
name=name,
|
|
country=country_obj,
|
|
longitude=longitude,
|
|
latitude=latitude
|
|
)
|
|
regions_to_create.append(region_obj)
|
|
# self.stdout.write(self.style.SUCCESS(f'State {state_id} prepared'))
|
|
|
|
if 'cities' in state and len(state['cities']) > 0:
|
|
for city in state['cities']:
|
|
city_id = f"{state_id}-{city['id']}"
|
|
city_name = city['name']
|
|
latitude = round(float(city['latitude']), 6) if city['latitude'] else None
|
|
longitude = round(float(city['longitude']), 6) if city['longitude'] else None
|
|
|
|
# Check for duplicate cities
|
|
if city_id in processed_city_ids:
|
|
self.stdout.write(self.style.ERROR(f'City {city_id} already processed'))
|
|
continue
|
|
|
|
processed_city_ids.add(city_id)
|
|
|
|
if city_id in existing_cities:
|
|
city_obj = existing_cities[city_id]
|
|
city_obj.name = city_name
|
|
city_obj.region = region_obj
|
|
city_obj.longitude = longitude
|
|
city_obj.latitude = latitude
|
|
cities_to_update.append(city_obj)
|
|
else:
|
|
city_obj = City(
|
|
id=city_id,
|
|
name=city_name,
|
|
region=region_obj,
|
|
longitude=longitude,
|
|
latitude=latitude
|
|
)
|
|
cities_to_create.append(city_obj)
|
|
# self.stdout.write(self.style.SUCCESS(f'City {city_id} prepared'))
|
|
|
|
else:
|
|
state_id = f"{country_code}-00"
|
|
processed_region_ids.add(state_id)
|
|
if state_id in existing_regions:
|
|
region_obj = existing_regions[state_id]
|
|
region_obj.name = country_name
|
|
region_obj.country = country_obj
|
|
regions_to_update.append(region_obj)
|
|
else:
|
|
region_obj = Region(
|
|
id=state_id,
|
|
name=country_name,
|
|
country=country_obj
|
|
)
|
|
regions_to_create.append(region_obj)
|
|
# self.stdout.write(self.style.SUCCESS(f'Region {state_id} prepared for {country_name}'))
|
|
# Process in batches
|
|
for i in range(0, len(countries_to_create), batch_size):
|
|
batch = countries_to_create[i:i + batch_size]
|
|
Country.objects.bulk_create(batch)
|
|
self.stdout.write(self.style.SUCCESS(f'Processed countries batch {i//batch_size + 1}/{(len(countries_to_create)-1)//batch_size + 1}'))
|
|
log_memory_usage(f"Country batch {i//batch_size + 1}/{(len(countries_to_create)-1)//batch_size + 1}")
|
|
|
|
for i in range(0, len(regions_to_create), batch_size):
|
|
batch = regions_to_create[i:i + batch_size]
|
|
Region.objects.bulk_create(batch)
|
|
self.stdout.write(self.style.SUCCESS(f'Processed regions batch {i//batch_size + 1}/{(len(regions_to_create)-1)//batch_size + 1}'))
|
|
log_memory_usage(f"Region batch {i//batch_size + 1}/{(len(regions_to_create)-1)//batch_size + 1}")
|
|
|
|
for i in range(0, len(cities_to_create), batch_size):
|
|
batch = cities_to_create[i:i + batch_size]
|
|
City.objects.bulk_create(batch)
|
|
self.stdout.write(self.style.SUCCESS(f'Processed cities batch {i//batch_size + 1}/{(len(cities_to_create)-1)//batch_size + 1}'))
|
|
log_memory_usage(f"City batch {i//batch_size + 1}/{(len(cities_to_create)-1)//batch_size + 1}")
|
|
|
|
# Process updates in batches
|
|
for i in range(0, len(countries_to_update), batch_size):
|
|
batch = countries_to_update[i:i + batch_size]
|
|
Country.objects.bulk_update(batch, ['name', 'subregion', 'capital', 'longitude', 'latitude'])
|
|
self.stdout.write(self.style.SUCCESS(f'Updated countries batch {i//batch_size + 1}/{(len(countries_to_update)-1)//batch_size + 1}'))
|
|
log_memory_usage(f"Country update batch {i//batch_size + 1}/{(len(countries_to_update)-1)//batch_size + 1}")
|
|
|
|
for i in range(0, len(regions_to_update), batch_size):
|
|
batch = regions_to_update[i:i + batch_size]
|
|
Region.objects.bulk_update(batch, ['name', 'country', 'longitude', 'latitude'])
|
|
self.stdout.write(self.style.SUCCESS(f'Updated regions batch {i//batch_size + 1}/{(len(regions_to_update)-1)//batch_size + 1}'))
|
|
log_memory_usage(f"Region update batch {i//batch_size + 1}/{(len(regions_to_update)-1)//batch_size + 1}")
|
|
|
|
for i in range(0, len(cities_to_update), batch_size):
|
|
batch = cities_to_update[i:i + batch_size]
|
|
City.objects.bulk_update(batch, ['name', 'region', 'longitude', 'latitude'])
|
|
self.stdout.write(self.style.SUCCESS(f'Updated cities batch {i//batch_size + 1}/{(len(cities_to_update)-1)//batch_size + 1}'))
|
|
log_memory_usage(f"City update batch {i//batch_size + 1}/{(len(cities_to_update)-1)//batch_size + 1}")
|
|
|
|
# Delete countries and regions that are no longer in the data
|
|
Country.objects.exclude(country_code__in=processed_country_codes).delete()
|
|
log_memory_usage("Extra Countries deleted")
|
|
Region.objects.exclude(id__in=processed_region_ids).delete()
|
|
log_memory_usage("Extra Regions deleted")
|
|
City.objects.exclude(id__in=processed_city_ids).delete()
|
|
log_memory_usage("Extra Cities deleted")
|
|
|
|
|
|
self.stdout.write(self.style.SUCCESS('All data imported successfully')) |