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import json
import logging
import datetime
class JSONFormatter(logging.Formatter):
"""
Render logs as JSON.
To add details to a log record, store them in a ``event_data``
custom attribute. This dict is merged into the event.
"""
def __init__(self):
pass # override logging.Formatter constructor
def format(self, record):
event = {
"timestamp": self.getTimestamp(record.created),
"message": record.getMessage(),
"level": record.levelname,
"logger": record.name,
}
event_data = getattr(record, "event_data", None)
if event_data:
event.update(event_data)
if record.exc_info:
event["exc_info"] = self.formatException(record.exc_info)
if record.stack_info:
event["stack_info"] = self.formatStack(record.stack_info)
return json.dumps(event)
def getTimestamp(self, created):
return datetime.datetime.utcfromtimestamp(created).isoformat()
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