Monitoring python Intermediate

Structured JSON Log Formatter

Python logging handler that outputs structured JSON logs compatible with any log aggregator.

python

import logging, json, traceback

class JSONFormatter(logging.Formatter):
    def format(self, record: logging.LogRecord) -> str:
        log = {
            'level':   record.levelname,
            'message': record.getMessage(),
            'logger':  record.name,
            'ts':      self.formatTime(record),
        }
        if record.exc_info:
            log['exception'] = traceback.format_exception(*record.exc_info)
        return json.dumps(log)

handler = logging.StreamHandler()
handler.setFormatter(JSONFormatter())
logging.getLogger().addHandler(handler)