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"""
The tool to check the availability or syntax of domain, IP or URL.
::
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╚═╝ ╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═══╝ ╚═════╝╚══════╝╚═════╝ ╚══════╝╚══════╝
Provides the base of all mariadb related migrations.
Author:
Nissar Chababy, @funilrys, contactTATAfunilrysTODTODcom
Special thanks:
https://pyfunceble.github.io/#/special-thanks
Contributors:
https://pyfunceble.github.io/#/contributors
Project link:
https://github.com/funilrys/PyFunceble
Project documentation:
https://docs.pyfunceble.com
Project homepage:
https://pyfunceble.github.io/
License:
::
Copyright 2017, 2018, 2019, 2020, 2022, 2023, 2024 Nissar Chababy
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
import functools
from typing import Any, Generator, Tuple
from sqlalchemy.sql import text
import PyFunceble.cli.facility
import PyFunceble.cli.factory
import PyFunceble.sessions
from PyFunceble.cli.migrators.db_base import DBMigratorBase
class MariaDBMigratorBase(DBMigratorBase):
"""
Provides the base of all our mariadb migration.
"""
def execute_if_authorized(default: Any = None): # pylint: disable=no-self-argument
"""
Executes the decorated method only if we are authorized to process.
Otherwise, apply the given :code:`default`.
"""
def inner_metdhod(func):
@functools.wraps(func)
def wrapper(self, *args, **kwargs):
if self.authorized:
return func(self, *args, **kwargs) # pylint: disable=not-callable
return self if default is None else default
return wrapper
return inner_metdhod
def get_rows(
self, statement: str, limit: int = 20
) -> Generator[Tuple[str, int], dict, None]:
"""
Run the given statement with a defined limit, and yield each row.
.. warning::
If you don't delete the given rows, this method will be infinite.
"""
statement += f" LIMIT {limit}"
while True:
db_result = list(self.db_session.execute(text(statement)).fetchall())
if not db_result:
break
for result in db_result:
yield dict(result)
@property
def authorized(self) -> bool:
"""
Provides the authorization to process.
"""
return PyFunceble.cli.facility.CredentialLoader.is_already_loaded()
@execute_if_authorized(None)
def migrate(self) -> "MariaDBMigratorBase":
"""
Provides the migration (itself).
"""
raise NotImplementedError()
@execute_if_authorized(None)
def start(self) -> "MariaDBMigratorBase":
"""
Starts the migration if wanted.
"""
PyFunceble.facility.Logger.info("Started migration.")
self.migrate()
PyFunceble.facility.Logger.info("Finished migration.")
return self
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