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|
from collections.abc import MutableMapping
from typing import TYPE_CHECKING
from django_test_migrations.db.backends.exceptions import (
DatabaseConfigurationNotFound,
)
from django_test_migrations.types import AnyConnection
if TYPE_CHECKING:
from django_test_migrations.db.backends.base.configuration import (
BaseDatabaseConfiguration,
)
_DatabaseConfigurationMapping = MutableMapping[
str,
type['BaseDatabaseConfiguration'],
]
database_configuration_registry: _DatabaseConfigurationMapping = {}
def get_database_configuration(
connection: AnyConnection,
) -> 'BaseDatabaseConfiguration':
"""Return proper ``BaseDatabaseConfiguration`` subclass instance.
Raises:
DatabaseConfigurationNotFound
when vendor extracted from ``connection`` doesn't support
interaction with database configuration/settings
"""
vendor = getattr(connection, 'vendor', '')
try:
database_configuration_class = database_configuration_registry[vendor]
except KeyError as exc:
raise DatabaseConfigurationNotFound(vendor) from exc
return database_configuration_class(connection)
|
