Agent Zero
a26405f15e
- app/core/resilience.py: CircuitBreaker (CLOSED/OPEN/HALF_OPEN), retry_db, redis_call_with_fallback, InMemoryRateLimiter, CircuitBreakerMiddleware - app/core/auth.py: get_session_data now falls back to PostgreSQL sessions table when Redis is unavailable - app/core/permissions.py: get_cached_permissions falls back to direct DB resolution when Redis circuit is open - app/core/rate_limit.py: check_rate_limit falls back to in-memory limiter when Redis is down; reset_rate_limit clears both Redis and in-memory - app/core/middleware.py: CSRF validation uses get_session_data (Redis+DB fallback); sliding session TTL is best-effort during outage - app/core/db/__init__.py: get_db() wraps session creation with retry_db for transient connection errors; records circuit breaker success/failure - app/deps.py: refresh_session_ttl wrapped in try/except for Redis outage - app/main.py: CircuitBreakerMiddleware registered (returns 503 when DB circuit is OPEN, skips health/metrics endpoints) - app/config.py: Added resilience settings (thresholds, cooldown, retries) - tests/test_resilience.py: 30 tests covering all patterns 30/30 resilience tests pass. No regressions in plugin lifecycle tests.
113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
"""Application configuration via Pydantic Settings."""
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from __future__ import annotations
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from functools import lru_cache
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from typing import Literal
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from pydantic_settings import BaseSettings, SettingsConfigDict
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class Settings(BaseSettings):
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"""Application settings loaded from environment variables."""
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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=False,
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extra="ignore",
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)
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# Environment
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environment: Literal["development", "production", "testing"] = "development"
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log_level: str = "INFO"
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# Database — separate connections for auth, API, worker, and migrations
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database_url: str = "postgresql+asyncpg://leocrm:leocrm@localhost:5432/leocrm_test"
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auth_database_url: str = "" # Falls back to database_url if empty
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worker_database_url: str = "" # Falls back to database_url if empty
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migration_database_url: str = "" # Falls back to database_url if empty
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db_pool_size: int = 20
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db_max_overflow: int = 30
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db_echo: bool = False
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# Redis
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redis_url: str = "redis://localhost:6379/0"
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session_ttl_seconds: int = 28800 # 8 hours
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# Auth
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bcrypt_rounds: int = 12
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session_cookie_name: str = "leocrm_session"
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session_cookie_secure: bool = True # Secure by default — set to False only for local HTTP development
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session_cookie_samesite: str = "lax" # Lax allows WebSocket cookies while preventing CSRF on top-level navigations
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session_cookie_httponly: bool = True
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password_reset_expiry_hours: int = 1
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# Storage
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storage_path: str = "/data/storage"
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# SMTP
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smtp_host: str = "localhost"
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smtp_port: int = 587
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smtp_username: str | None = None
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smtp_password: str | None = None
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smtp_from_email: str = "noreply@leocrm.local"
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smtp_use_tls: bool = True
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# Secret Key (for signing, sessions, etc.)
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secret_key: str = "change-me-in-production-use-a-secure-random-string"
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# CORS
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cors_origins: str = "http://localhost:5173,http://localhost:3000"
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# Frontend URL for email links (password reset, invitations, etc.)
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frontend_url: str = "http://localhost:5173"
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# Trusted proxy CIDRs (comma-separated) — only these proxies can set X-Forwarded-For
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trusted_proxy_cidrs: str = ""
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# Resilience
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circuit_breaker_failure_threshold: int = 5
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circuit_breaker_window_seconds: int = 30
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circuit_breaker_cooldown_seconds: int = 60
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db_retry_max_attempts: int = 3
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db_retry_base_delay: float = 0.1
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# Rate Limiting
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rate_limit_login_max: int = 5
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rate_limit_login_window: int = 900 # 15 min
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rate_limit_reset_max: int = 3
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rate_limit_reset_window: int = 3600 # 1 hour
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rate_limit_reset_confirm_max: int = 5
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rate_limit_reset_confirm_window: int = 3600 # 1 hour
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rate_limit_general_max: int = 300
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rate_limit_general_window: int = 60 # 1 min
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@property
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def cors_origin_list(self) -> list[str]:
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"""Parse comma-separated CORS origins into a list."""
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return [o.strip() for o in self.cors_origins.split(",") if o.strip()]
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@lru_cache
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def get_settings() -> Settings:
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"""Get cached settings instance."""
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s = Settings()
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# Safety checks — always validate critical settings
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_DEFAULT_KEY = "change-me-in-production-use-a-secure-random-string"
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if s.secret_key == _DEFAULT_KEY:
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raise RuntimeError("SECRET_KEY must be changed from default value")
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if len(s.secret_key) < 32:
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raise RuntimeError("SECRET_KEY must be at least 32 characters long")
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# Production-only checks
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if s.environment == "production":
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if not s.session_cookie_secure:
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raise RuntimeError("SESSION_COOKIE_SECURE must be True in production")
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if s.storage_path == "/tmp":
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raise RuntimeError("STORAGE_PATH must not be /tmp in production")
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return s
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# Module-level singleton for backward-compatible imports
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settings = get_settings()
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