90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
"""
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Logging configuration for VideoDetect.
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Sets up JSON structured logging via python-json-logger with:
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- Configurable log levels
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- Standardized field names
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- Log rotation
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- All logs to stdout for Docker capture
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"""
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import json
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import logging
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import logging.handlers
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import sys
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from datetime import datetime, timezone
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from python_json_logger import json_formatter
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def setup_logging(
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level: str = "INFO",
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log_format: str = "json",
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rotation_max_bytes: int = 104857600, # 100MB
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rotation_backup_count: int = 10,
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):
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"""Configure structured logging for the application."""
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log_level = getattr(logging, level.upper(), logging.INFO)
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# Root logger
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root_logger = logging.getLogger()
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root_logger.setLevel(log_level)
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# Remove existing handlers
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root_logger.handlers.clear()
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# Handler: stdout (for Docker capture)
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handler = logging.StreamHandler(sys.stdout)
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handler.setLevel(log_level)
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if log_format == "json":
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formatter = JsonFormatter()
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else:
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formatter = logging.Formatter(
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"%(asctime)s %(levelname)s %(name)s %(message)s",
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datefmt="%Y-%m-%dT%H:%M:%S%z",
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)
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handler.setFormatter(formatter)
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root_logger.addHandler(handler)
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# Handler: file rotation (for persistence)
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file_handler = logging.handlers.RotatingFileHandler(
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filename="/logs/videodetect.log",
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maxBytes=rotation_max_bytes,
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backupCount=rotation_backup_count,
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encoding="utf-8",
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)
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file_handler.setLevel(log_level)
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file_handler.setFormatter(formatter)
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root_logger.addHandler(file_handler)
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logging.info("Logging configured: level=%s format=%s", level, log_format)
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class JsonFormatter(logging.Formatter):
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"""JSON log formatter with standardized fields."""
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def format(self, record: logging.LogRecord) -> str:
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log_data = {
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"timestamp": datetime.fromtimestamp(record.created, tz=timezone.utc).isoformat(),
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"level": record.levelname,
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"logger": record.name,
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"message": record.getMessage(),
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"module": record.module,
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"function": record.funcName,
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"line": record.lineno,
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}
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# Add extra fields
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if hasattr(record, "video_id"):
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log_data["video_id"] = record.video_id
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if hasattr(record, "metadata"):
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log_data["metadata"] = record.metadata
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# Add exception info if present
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if record.exc_info and record.exc_info[0] is not None:
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log_data["exception"] = self.formatException(record.exc_info)
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return json.dumps(log_data, default=str)
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