mirror of
https://github.com/jxxghp/MoviePilot.git
synced 2026-08-30 04:27:40 +08:00
38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
"""数据库连通性应用服务。"""
|
|
|
|
from __future__ import annotations
|
|
|
|
from collections.abc import Callable
|
|
from typing import Optional
|
|
|
|
|
|
DatabaseProbe = Callable[[], Optional[str]]
|
|
|
|
|
|
class DatabaseHealthService:
|
|
"""为模块和诊断入口提供不暴露会话实现的数据库探测能力。"""
|
|
|
|
def __init__(self, probe: DatabaseProbe) -> None:
|
|
"""保存由组合根提供的数据库探测端口。"""
|
|
self._probe = probe
|
|
|
|
def test(self) -> Optional[str]:
|
|
"""执行数据库探测，成功返回空值，失败返回说明。"""
|
|
return self._probe()
|
|
|
|
|
|
_configured_database_health: DatabaseHealthService | None = None
|
|
|
|
|
|
def configure_database_health(service: DatabaseHealthService) -> None:
|
|
"""由启动组合根登记数据库探测服务。"""
|
|
global _configured_database_health
|
|
_configured_database_health = service
|
|
|
|
|
|
def get_configured_database_health() -> DatabaseHealthService:
|
|
"""返回启动阶段登记的数据库探测服务。"""
|
|
if _configured_database_health is None:
|
|
raise RuntimeError("数据库探测服务尚未配置")
|
|
return _configured_database_health
|