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47 lines
884 B
Python
47 lines
884 B
Python
from __future__ import annotations
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import abc
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import typing
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from ..core import app
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preregistered_migrations: list[typing.Type[Migration]] = []
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def migration_class(name: str, number: int):
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"""注册一个迁移
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"""
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def decorator(cls: typing.Type[Migration]) -> typing.Type[Migration]:
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cls.name = name
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cls.number = number
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preregistered_migrations.append(cls)
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return cls
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return decorator
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class Migration(abc.ABC):
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"""一个版本的迁移
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"""
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name: str
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number: int
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ap: app.Application
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def __init__(self, ap: app.Application):
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self.ap = ap
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@abc.abstractmethod
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async def need_migrate(self) -> bool:
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"""判断当前环境是否需要运行此迁移
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"""
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pass
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@abc.abstractmethod
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async def run(self):
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"""执行迁移
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"""
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pass
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