"""Configuration management for Seattle API service."""
import os
from dataclasses import dataclass
@dataclass
class FastAPIConfig:
"""Configuration for the FastAPI service."""
# Polling configuration
polling_interval_minutes: int = 5
seattle_endpoint: str = (
"https://web.seattle.gov/sfd/realtime911/getRecsForDatePub.asp?action=Today&incDate=&rad1=des"
)
# Cache configuration
cache_retention_hours: int = 24
# Server configuration
server_port: int = 8000
server_host: str = "0.0.0.0"
# Logging configuration
log_level: str = "INFO"
@classmethod
def from_env(cls) -> "FastAPIConfig":
"""Create configuration from environment variables."""
return cls(
polling_interval_minutes=int(os.getenv("POLLING_INTERVAL_MINUTES", "5")),
seattle_endpoint=os.getenv(
"SEATTLE_ENDPOINT_URL",
"https://web.seattle.gov/sfd/realtime911/getRecsForDatePub.asp?action=Today&incDate=&rad1=des",
),
cache_retention_hours=int(os.getenv("CACHE_RETENTION_HOURS", "24")),
server_port=int(os.getenv("SERVER_PORT", "8000")),
server_host=os.getenv("SERVER_HOST", "0.0.0.0"),
log_level=os.getenv("LOG_LEVEL", "INFO"),
)
def validate(self) -> None:
"""Validate configuration settings."""
if self.polling_interval_minutes <= 0:
raise ValueError("Polling interval must be positive")
if self.cache_retention_hours <= 0:
raise ValueError("Cache retention hours must be positive")
if not self.seattle_endpoint:
raise ValueError("Seattle endpoint URL is required")
if self.server_port <= 0 or self.server_port > 65535:
raise ValueError("Server port must be between 1 and 65535")
# Global configuration instance
config = FastAPIConfig.from_env()
