51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
import shutil
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from django.core.management.base import BaseCommand, CommandError
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from django.db import connection, transaction
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from openslides.utils.main import get_database_path_from_settings
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class Command(BaseCommand):
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"""
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Command to backup the SQLite3 database.
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"""
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help = "Backups the SQLite3 database."
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def add_arguments(self, parser):
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parser.add_argument(
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"--path",
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default="database_backup.sqlite",
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help="Path for the backup file (Default: database_backup.sqlite).",
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)
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def handle(self, *args, **options):
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path = options.get("path")
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@transaction.atomic
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def do_backup(src_path, dest_path):
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# perform a simple file-copy backup of the database
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# first we need a shared lock on the database, issuing a select()
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# will do this for us
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cursor = connection.cursor()
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cursor.execute("SELECT count(*) from sqlite_master")
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# now copy the file
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try:
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shutil.copy(src_path, dest_path)
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except IOError:
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# TODO: use the IOError message as message for the user
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raise CommandError("Database backup failed.")
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database_path = get_database_path_from_settings()
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if database_path:
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do_backup(database_path, path)
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self.stdout.write(
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f"Database {database_path} successfully stored at {path}."
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)
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else:
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raise CommandError(
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"Default database is not SQLite3. Only SQLite3 databases"
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"can currently be backuped."
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)
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