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252
src/infrastructure/config/settings.py
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252
src/infrastructure/config/settings.py
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from __future__ import annotations
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from functools import lru_cache
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from typing import List, Literal
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import os
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from dotenv import load_dotenv, find_dotenv
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from pydantic import AliasChoices, Field, field_validator, model_validator
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from pydantic_settings import BaseSettings, SettingsConfigDict
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from src.infrastructure.vault import create_hvac_client_from_approle, read_kv2_secret
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env_file = find_dotenv(".env")
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if env_file:
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load_dotenv(env_file)
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def normalize_vault_base_url(raw: str) -> str:
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u = raw.strip().rstrip('/')
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if not u:
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return raw.strip()
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if '://' not in u:
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return f'https://{u}'
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return u
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class Settings(BaseSettings):
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VAULT_ADDR: str = Field(default='http://localhost:8200')
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VAULT_ROLE_ID: str = Field(..., description='AppRole role_id')
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VAULT_SECRET_ID: str = Field(
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...,
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description='AppRole secret_id',
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validation_alias=AliasChoices('VAULT_SECRET_ID', 'VAULT_SECRET_TOKEN'),
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)
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VAULT_NAMESPACE: str | None = Field(default=None)
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VAULT_MOUNT_POINT: str = Field(default='dev-secrets')
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VAULT_JWT_KID_PATH: str = 'jwt/kid'
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VAULT_JWT_KIDS_PREFIX: str = 'jwt/kids'
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JWT_KEYS_REFRESH_SECONDS: int = 3600
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DATABASE_HOST: str
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DATABASE_PORT: int = Field(default=5432, ge=1, le=65535)
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DATABASE_NAME: str
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DATABASE_USER: str
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DATABASE_PASSWORD: str
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DATABASE_POOL_SIZE: int = 10
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DATABASE_MAX_OVERFLOW: int = 20
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DATABASE_POOL_TIMEOUT: int = 30
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DATABASE_POOL_RECYCLE: int = 3600
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DATABASE_ECHO: bool = False
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CSRF_SECRET_KEY: str = Field(min_length=32)
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CSRF_COOKIE_SECURE: bool = False
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CSRF_COOKIE_HTTPONLY: bool = True
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CSRF_COOKIE_SAMESITE: Literal['Lax', 'Strict', 'None'] = 'Lax'
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CSRF_COOKIE_PATH: str = '/'
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CSRF_COOKIE_DOMAIN: str | None = None
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DOCS_USERNAME: str = 'admin'
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DOCS_PASSWORD: str = 'admin'
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JWT_ACCESS_TTL_SECONDS: int = 15 * 60
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JWT_REFRESH_TTL_SECONDS: int = 30 * 24 * 60 * 60
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JWT_ISSUER: str | None = None
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JWT_AUDIENCE: str | None = None
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JWT_ALGORITHM: str = 'RS256'
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REDIS_HOST: str = 'localhost'
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REDIS_PORT: int = 6379
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REDIS_PASSWORD: str | None = None
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REDIS_DB: int = 0
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RABBIT_HOST: str = 'localhost'
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RABBIT_PORT: int = 5672
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RABBIT_USER: str = 'guest'
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RABBIT_PASSWORD: str = 'guest'
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RABBIT_VHOST: str = '/'
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RABBIT_PUBLISH_PERSIST: bool = True
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RABBIT_CONNECT_TIMEOUT: int = 5
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RABBIT_EMAIL_CODE_QUEUE: str = 'email.verification_code'
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CORS_ORIGINS: str = 'http://localhost:3000'
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CORS_ALLOW_CREDENTIALS: bool = True
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RATE_LIMIT_REQUESTS: int = 60
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RATE_LIMIT_WINDOW: int = 60
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LOG_LEVEL: Literal['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'] = 'INFO'
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LOG_FORMAT: Literal['JSON', 'TEXT'] = 'TEXT'
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@field_validator('VAULT_ADDR', mode='before')
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@classmethod
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def vault_addr_scheme(cls, v):
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if v is None or not isinstance(v, str):
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return v
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return normalize_vault_base_url(v)
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@field_validator('CSRF_COOKIE_DOMAIN', mode='before')
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@classmethod
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def empty_csrf_domain_to_none(cls, v):
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if v is None or (isinstance(v, str) and not v.strip()):
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return None
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return v
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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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populate_by_name=True,
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)
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@model_validator(mode='before')
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@classmethod
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def load_from_vault(cls, data: dict):
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if not isinstance(data, dict):
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return data
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addr_raw = data.get('VAULT_ADDR') or os.getenv('VAULT_ADDR') or 'http://localhost:8200'
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addr = normalize_vault_base_url(addr_raw)
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data['VAULT_ADDR'] = addr
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role_id = data.get('VAULT_ROLE_ID') or os.getenv('VAULT_ROLE_ID')
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secret_id = (
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data.get('VAULT_SECRET_ID')
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or data.get('VAULT_SECRET_TOKEN')
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or os.getenv('VAULT_SECRET_ID')
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or os.getenv('VAULT_SECRET_TOKEN')
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)
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namespace = data.get('VAULT_NAMESPACE')
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if namespace is None:
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namespace = os.getenv('VAULT_NAMESPACE')
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namespace = namespace if namespace else None
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mount = data.get('VAULT_MOUNT_POINT') or os.getenv('VAULT_MOUNT_POINT') or 'dev-secrets'
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if not role_id or not secret_id:
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raise RuntimeError(
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'VAULT_ROLE_ID and VAULT_SECRET_ID (or VAULT_SECRET_TOKEN) are required for Vault AppRole'
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)
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data['VAULT_ROLE_ID'] = str(role_id).strip()
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data['VAULT_SECRET_ID'] = str(secret_id).strip()
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client = create_hvac_client_from_approle(
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url=addr,
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role_id=role_id,
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secret_id=secret_id,
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namespace=namespace,
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timeout=5,
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)
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def read_secret(path: str) -> dict:
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return read_kv2_secret(client=client, mount_point=mount, path=path)
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def read_secret_optional(path: str) -> dict:
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try:
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return read_secret(path)
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except Exception:
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return {}
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database = read_secret('database')
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csrf = read_secret('csrf')
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db_ci = {str(k).lower(): v for k, v in database.items()}
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def db_nonempty(key: str) -> bool:
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v = db_ci.get(key)
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if v is None:
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return False
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if isinstance(v, str) and not v.strip():
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return False
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return True
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required_db = ['host', 'name', 'user', 'password', 'port']
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missing_db = [k for k in required_db if not db_nonempty(k)]
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if missing_db:
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raise RuntimeError(f'Vault secret database missing non-empty keys: {missing_db}')
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data['DATABASE_HOST'] = str(db_ci['host']).strip()
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data['DATABASE_PORT'] = int(db_ci['port'])
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data['DATABASE_NAME'] = str(db_ci['name']).strip()
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data['DATABASE_USER'] = str(db_ci['user']).strip()
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data['DATABASE_PASSWORD'] = str(db_ci['password']).strip()
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csrf_secret = None
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for entry_key, entry_val in csrf.items():
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if str(entry_key).lower() == 'key' and entry_val is not None and str(entry_val).strip():
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csrf_secret = str(entry_val).strip()
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break
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if not csrf_secret:
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raise RuntimeError(
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'Vault secret at csrf must contain a non-empty field named key (e.g. key=...)'
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)
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data['CSRF_SECRET_KEY'] = csrf_secret
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rabbit = read_secret_optional('rabbitmq')
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if rabbit:
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r_ci = {str(k).lower(): v for k, v in rabbit.items()}
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def rb_set(field: str, env_key: str, *, as_int: bool = False) -> None:
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v = r_ci.get(field)
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if v is None:
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return
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if isinstance(v, str) and not v.strip():
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return
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if as_int:
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data[env_key] = int(v)
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else:
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data[env_key] = str(v).strip()
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rb_set('host', 'RABBIT_HOST')
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rb_set('port', 'RABBIT_PORT', as_int=True)
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rb_set('user', 'RABBIT_USER')
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rb_set('password', 'RABBIT_PASSWORD')
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rb_set('vhost', 'RABBIT_VHOST')
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return data
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def cors_origins_list(self) -> List[str]:
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return [o.strip() for o in self.CORS_ORIGINS.split(',') if o.strip()]
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@property
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def DATABASE_URL(self) -> str:
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return (
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f"postgresql+asyncpg://{self.DATABASE_USER}:{self.DATABASE_PASSWORD}"
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f"@{self.DATABASE_HOST}:{self.DATABASE_PORT}/{self.DATABASE_NAME}"
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)
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@property
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def REDIS_URL(self) -> str:
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auth = f":{self.REDIS_PASSWORD}@" if self.REDIS_PASSWORD else ""
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return f"redis://{auth}{self.REDIS_HOST}:{self.REDIS_PORT}/{self.REDIS_DB}"
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@property
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def RABBIT_URL(self) -> str:
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vhost = "%2F" if self.RABBIT_VHOST == "/" else self.RABBIT_VHOST.lstrip("/")
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return f"amqp://{self.RABBIT_USER}:{self.RABBIT_PASSWORD}@{self.RABBIT_HOST}:{self.RABBIT_PORT}/{vhost}"
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@property
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def EXCLUDED_PATHS(self) -> List[str]:
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return ['/docs', '/redoc', '/openapi.json', '/ping', '/health']
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@lru_cache(maxsize=1)
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def get_settings() -> Settings:
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return Settings()
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settings = get_settings()
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