108 lines
3.6 KiB
Python
108 lines
3.6 KiB
Python
"""配置。
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产品名只出现在这里和 apps/console/lib/brand.ts —— 改名成本 = 改两个常量。
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商标检索未完成前，任何地方都不要再硬编码产品名。
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"""
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from __future__ import annotations
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import os
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from dataclasses import dataclass, field
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from pathlib import Path
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from typing import Optional
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APP_NAME = "FlashOps"
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APP_TAGLINE = "存储实验室无人值守执行层"
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# 仓库根目录：.../flashops
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REPO_ROOT = Path(__file__).resolve().parents[3]
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def _env(key: str, default: str) -> str:
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return os.environ.get(f"FLASHOPS_{key}", default)
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def _env_int(key: str, default: int) -> int:
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return int(os.environ.get(f"FLASHOPS_{key}", str(default)))
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def _env_float(key: str, default: float) -> float:
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return float(os.environ.get(f"FLASHOPS_{key}", str(default)))
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@dataclass(frozen=True)
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class TimingPolicy:
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"""时间策略。
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全部集中在这里，且引擎不直接读它 —— 引擎从 Snapshot 拿数值。
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这样"30 秒心跳超时"这类规则可以在测试里用 0.03 秒验证。
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"""
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heartbeat_interval_s: float = 5.0
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heartbeat_degraded_after_s: float = 15.0
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heartbeat_lost_after_s: float = 30.0
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lease_ttl_s: float = 60.0
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lease_poll_timeout_s: float = 20.0
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step_default_timeout_s: float = 600.0
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recovery_settle_s: float = 20.0 # 恢复动作后等待主机回来的时间
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ac_cycle_off_s: float = 10.0 # AC 断电后的安全间隔（方案 §7.2）
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max_recovery_per_loop: int = 3
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max_recovery_total: int = 20
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@dataclass(frozen=True)
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class Settings:
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app_name: str = APP_NAME
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env: str = field(default_factory=lambda: _env("ENV", "development"))
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# 开发态：SQLite。生产：postgresql+asyncpg://...
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database_url: str = field(
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default_factory=lambda: _env(
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"DATABASE_URL", "sqlite+aiosqlite:///" + str(REPO_ROOT / "var" / "flashops.db")
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)
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)
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# 开发态：本地目录。生产：s3://minio:9000/flashops
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object_store_url: str = field(
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default_factory=lambda: _env("OBJECT_STORE_URL", str(REPO_ROOT / "var" / "objects"))
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)
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# 开发态：进程内 asyncio。生产：redis://... / nats://...
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bus_url: Optional[str] = field(default_factory=lambda: os.environ.get("FLASHOPS_BUS_URL"))
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# Agent 首次注册口令。开发态未配置时允许本机演示；生产态缺失时拒绝注册。
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agent_enrollment_token: Optional[str] = field(
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default_factory=lambda: os.environ.get("FLASHOPS_AGENT_ENROLLMENT_TOKEN")
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)
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api_host: str = field(default_factory=lambda: _env("API_HOST", "0.0.0.0"))
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api_port: int = field(default_factory=lambda: _env_int("API_PORT", 8000))
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cors_origins: str = field(default_factory=lambda: _env("CORS_ORIGINS", "http://localhost:3000"))
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# 引擎主循环的 tick 间隔。demo/测试里调小以加速。
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engine_tick_s: float = field(default_factory=lambda: _env_float("ENGINE_TICK_S", 0.5))
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# 演示/仿真加速倍率：1.0 = 真实速度
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time_scale: float = field(default_factory=lambda: _env_float("TIME_SCALE", 1.0))
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timing: TimingPolicy = field(default_factory=TimingPolicy)
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@property
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def is_sqlite(self) -> bool:
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return self.database_url.startswith("sqlite")
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@property
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def object_store_path(self) -> Path:
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return Path(self.object_store_url)
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_settings: Optional[Settings] = None
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def get_settings() -> Settings:
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global _settings
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if _settings is None:
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_settings = Settings()
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return _settings
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def reset_settings() -> None:
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"""测试用：让下一次 get_settings() 重新读环境变量。"""
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global _settings
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_settings = None
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