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55 lines
2.4 KiB
Python
55 lines
2.4 KiB
Python
import sys
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import psycopg2
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from psycopg2 import sql
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from django.core.management.base import BaseCommand
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from django.conf import settings
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from django.db import connection
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class Command(BaseCommand):
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help = "Drop the entire database (schema and data) and recreate it. (PostgreSQL only)"
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def handle(self, *args, **options):
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db_settings = settings.DATABASES['default']
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db_name = db_settings['NAME']
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user = db_settings['USER']
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password = db_settings['PASSWORD']
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host = db_settings.get('HOST', 'localhost')
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port = db_settings.get('PORT', 5432)
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# Read TLS parameters from Django OPTIONS (populated when POSTGRES_SSL=true)
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db_options = db_settings.get('OPTIONS', {})
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ssl_kwargs = {}
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for key in ('sslmode', 'sslrootcert', 'sslcert', 'sslkey'):
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if key in db_options:
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ssl_kwargs[key] = db_options[key]
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self.stdout.write(self.style.WARNING(
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f"WARNING: This will irreversibly drop the entire database '{db_name}'!"
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))
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confirm = input("Type 'yes' to proceed: ")
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if confirm.lower() != 'yes':
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self.stdout.write("Aborted. No changes made.")
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return
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# Close Django's current connection to the target DB
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connection.close()
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# For PostgreSQL, we need to connect to a different database (e.g. the maintenance database "postgres")
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maintenance_db = 'postgres'
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try:
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self.stdout.write("Connecting to maintenance database...")
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conn = psycopg2.connect(dbname=maintenance_db, user=user, password=password, host=host, port=port, **ssl_kwargs)
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conn.autocommit = True
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cur = conn.cursor()
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self.stdout.write(f"Dropping database '{db_name}'...")
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cur.execute(sql.SQL("DROP DATABASE IF EXISTS {}").format(sql.Identifier(db_name)))
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self.stdout.write(f"Creating database '{db_name}'...")
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cur.execute(sql.SQL("CREATE DATABASE {}").format(sql.Identifier(db_name)))
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cur.close()
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conn.close()
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self.stdout.write(self.style.SUCCESS(f"Database '{db_name}' has been dropped and recreated."))
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self.stdout.write("Now run 'python manage.py migrate' to reapply your migrations.")
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except Exception as e:
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self.stderr.write(self.style.ERROR(f"Error dropping/creating database: {e}"))
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sys.exit(1)
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