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from sqlalchemy.engine.url import URL

from superset.exceptions import SupersetException


class DBSecurityException(SupersetException):
    """ Exception to prevent a security issue with connecting to a DB """

    status = 400


def check_sqlalchemy_uri(uri: URL) -> None:
    if uri.startswith("sqlite"):
        # sqlite creates a local DB, which allows mapping server's filesystem
        raise DBSecurityException(
            "SQLite database cannot be used as a data source for security reasons."
        )