77 lines
2.6 KiB
Python
77 lines
2.6 KiB
Python
"""Runtime configuration loaded from environment variables."""
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from __future__ import annotations
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from typing import Literal
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from pydantic import Field, model_validator
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from pydantic_settings import BaseSettings, SettingsConfigDict
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# Sentinel values that .env.example ships with. If the runtime is configured
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# in a non-dev environment with one of these still in place, we refuse to boot.
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_DEV_JWT_SECRET = "change-me-to-a-long-random-string"
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_DEV_DB_PASSWORD = "change-me-strong"
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class Settings(BaseSettings):
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model_config = SettingsConfigDict(
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env_file=".env",
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env_file_encoding="utf-8",
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case_sensitive=True,
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extra="ignore",
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)
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# === Runtime mode ===
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# Set to "dev" to allow the default placeholder secrets. Anything else
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# (e.g. "prod", "staging") forces strong values.
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APP_ENV: Literal["dev", "prod", "staging", "test"] = "prod"
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# === Postgres ===
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POSTGRES_DB: str = "metamorph"
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POSTGRES_USER: str = "metamorph"
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POSTGRES_PASSWORD: str = ""
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POSTGRES_HOST: str = "db"
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POSTGRES_PORT: int = 5432
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# === API ===
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JWT_SECRET: str = Field(default="", min_length=0)
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LOG_LEVEL: str = "INFO"
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FRONT_ORIGIN: str = "http://localhost:8080"
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EVIDENCE_DIR: str = "/data/evidence"
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@property
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def cors_origins(self) -> list[str]:
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return [o.strip() for o in self.FRONT_ORIGIN.split(",") if o.strip()]
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@property
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def database_url(self) -> str:
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"""SQLAlchemy URL using the psycopg3 driver."""
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return (
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f"postgresql+psycopg://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}"
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f"@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
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)
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@model_validator(mode="after")
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def _enforce_secret_strength(self) -> "Settings":
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"""Refuse to boot in prod/staging if secrets are missing or default.
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`dev` and `test` are explicitly exempted so workstations and the
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ephemeral test container don't need real secrets.
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"""
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if self.APP_ENV in ("dev", "test"):
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return self
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if not self.JWT_SECRET or self.JWT_SECRET == _DEV_JWT_SECRET or len(self.JWT_SECRET) < 32:
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raise ValueError(
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"JWT_SECRET is missing, default, or shorter than 32 chars. "
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"Set APP_ENV=dev to bypass for local development."
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)
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if not self.POSTGRES_PASSWORD or self.POSTGRES_PASSWORD == _DEV_DB_PASSWORD:
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raise ValueError(
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"POSTGRES_PASSWORD is missing or default. "
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"Set APP_ENV=dev to bypass for local development."
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)
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return self
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settings = Settings()
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