33 lines
1.1 KiB
Python
33 lines
1.1 KiB
Python
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"""
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Demo 进程插件全局运行时状态 — 与 inline 插件约定一致
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约定:
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- 模块只做"声明默认值"，不产生任何导入期副作用
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- 所有值统一在 on_init 中通过 set_global_var 显式写入
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- set_global_var 仅允许写入 _ALLOWED 白名单，拼写错误会立即抛错
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"""
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from typing import Any
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# 允许写入的全局变量白名单（防止拼写错误静默创建无用的新变量）
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_ALLOWED = frozenset({"greeting_prefix"})
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# 显式声明所有运行时状态（默认值，运行时由 on_init 写入）
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greeting_prefix: str = "Hello"
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def set_global_var(name: str, value: Any) -> None:
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"""白名单校验版 setter — 设置模块级运行时状态。"""
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if name not in _ALLOWED:
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raise KeyError(f"global_var 未知变量: {name}（允许: {sorted(_ALLOWED)}）")
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globals()[name] = value
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def require(name: str) -> Any:
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"""取"必须已存在"的值，未初始化时抛清晰错误。"""
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if name not in _ALLOWED:
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raise KeyError(f"global_var 未知变量: {name}")
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return globals()[name]
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__all__ = ["greeting_prefix", "set_global_var", "require"]
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