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109 lines
2.8 KiB
Python
109 lines
2.8 KiB
Python
import logging
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import signal
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import sys
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from src.mqtt_client import MQTTClient
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from src.redis_writer import RedisWriter
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logging.basicConfig(
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level=getattr(logging, "INFO"),
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format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
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)
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logger = logging.getLogger(__name__)
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class MQTTIngestionService:
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def __init__(self):
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self.running = False
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self.redis_writer = None
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self.mqtt_client = None
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signal.signal(signal.SIGTERM, self._signal_handler)
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signal.signal(signal.SIGINT, self._signal_handler)
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def _signal_handler(self, signum, frame):
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"""Handle shutdown signals"""
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logger.info(f"Received signal {signum}, shutting down...")
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self.stop()
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def _handle_sensor_data(self, device_id: str, sensor_type: str, value: float):
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"""
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This function is called by MQTT client when a message arrives.
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It just passes the data to Redis writer.
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"""
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success = self.redis_writer.write_sensor_data(device_id, sensor_type, value)
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if success:
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logger.info(f"Processed {device_id}/{sensor_type}: {value}")
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else:
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logger.error(f"Failed to process {device_id}/{sensor_type}: {value}")
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def start(self):
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"""Start the service"""
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logger.info("Starting MQTT Ingestion Service...")
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try:
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self.redis_writer = RedisWriter()
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self.mqtt_client = MQTTClient(self._handle_sensor_data)
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if not self.mqtt_client.connect():
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logger.error("Failed to connect to MQTT, exiting")
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return False
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self.running = True
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logger.info("Service started successfully")
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self.mqtt_client.start_loop()
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except Exception as e:
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logger.error(f"Service startup failed: {e}")
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return False
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return True
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def stop(self):
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"""Stop the service gracefully"""
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if not self.running:
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return
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logger.info("Stopping service...")
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self.running = False
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if self.mqtt_client:
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self.mqtt_client.stop()
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if self.redis_writer:
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self.redis_writer.close()
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logger.info("Service stopped")
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def health_check(self) -> bool:
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"""Check if service is healthy"""
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if not self.running:
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return False
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if not self.redis_writer or not self.redis_writer.health_check():
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return False
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return True
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def main():
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"""Entry point"""
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service = MQTTIngestionService()
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try:
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success = service.start()
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if not success:
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sys.exit(1)
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except KeyboardInterrupt:
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logger.info("Received keyboard interrupt")
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except Exception as e:
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logger.error(f"Unexpected error: {e}")
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sys.exit(1)
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finally:
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service.stop()
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if __name__ == "__main__":
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main()
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