53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
"""统一异常体系。
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业务代码只抛 BusinessError，由 main.py 里的处理器转成统一响应，
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避免把 traceback 直接甩给前端。
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"""
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from __future__ import annotations
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from typing import Any
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class BusinessError(Exception):
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"""可预期的业务异常（参数不合法、状态不允许流转、数据不存在等）。"""
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def __init__(self, msg: str, code: int = 400, data: Any = None) -> None:
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self.msg = msg
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self.code = code
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self.data = data
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super().__init__(msg)
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class NotFoundError(BusinessError):
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def __init__(self, msg: str = "数据不存在") -> None:
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super().__init__(msg, code=404)
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class ConflictError(BusinessError):
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"""唯一键冲突 / 状态冲突。"""
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def __init__(self, msg: str = "数据冲突") -> None:
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super().__init__(msg, code=409)
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class AuthError(BusinessError):
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def __init__(self, msg: str = "未登录或登录已过期") -> None:
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super().__init__(msg, code=401)
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class PermissionError_(BusinessError):
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def __init__(self, msg: str = "没有操作权限") -> None:
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super().__init__(msg, code=403)
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class RuleError(BusinessError):
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"""高级筛选器规则不合法。"""
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def __init__(self, msg: str = "筛选规则不合法") -> None:
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super().__init__(msg, code=422)
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# 给 FastAPI 的 HTTPException 留个短别名，方便 api 层按需使用
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from fastapi import HTTPException as HTTPException # noqa: E402,F401
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