backend/logger.py

import logging
import structlog
import sys
from pythonjsonlogger import jsonlogger


def init_logger():
    structlog.configure(
        processors=[
            structlog.stdlib.filter_by_level,
            structlog.stdlib.add_logger_name,
            structlog.stdlib.add_log_level,
            structlog.stdlib.PositionalArgumentsFormatter(),
            structlog.processors.StackInfoRenderer(),
            structlog.processors.format_exc_info,
            structlog.processors.UnicodeDecoder(),
            structlog.stdlib.render_to_log_kwargs,
        ],
        logger_factory=structlog.stdlib.LoggerFactory(),
        wrapper_class=structlog.stdlib.BoundLogger,
        cache_logger_on_first_use=True,
    )
    handler = logging.StreamHandler(sys.stdout)
    handler.setFormatter(jsonlogger.JsonFormatter())
    root_logger = logging.getLogger()
    root_logger.addHandler(handler)