Bug: Missing _buffer_config check before in flush_buffer

[tonnico]

Expected Behaviour

When flush_buffer_on_uncaught_error is true but no buffer_config is set, no AttributeError should be raised on an error.

Current Behaviour

[ERROR] AttributeError: 'Logger' object has no attribute '_buffer_cache'
Traceback (most recent call last):
  File "/opt/python/aws_lambda_powertools/logging/logger.py", line 551, in decorate
    self.flush_buffer()
  File "/opt/python/aws_lambda_powertools/logging/logger.py", line 1205, in flush_buffer
    buffer = self._buffer_cache.get(tracer_id)
  File "/opt/python/aws_lambda_powertools/logging/logger.py", line 306, in __getattr__
    return getattr(self._logger, name)

Code snippet

from aws_lambda_powertools.logging import Logger

logger = Logger()

@logger.inject_lambda_context(flush_buffer_on_uncaught_error=True)
def handler(event, context):
    raise ValueError("foo")

Possible Solution

like in other places, wrap self._buffer_cache.get like:

if not self._buffer_config:
    return

Steps to Reproduce

Deploy lambda and raise the exception.

Powertools for AWS Lambda (Python) version

latest

AWS Lambda function runtime

3.13

Packaging format used

PyPi

Debugging logs

[leandrodamascena]

Hey @tonnico thanks a lot for opening this issue! Yeah, this is a small bug that can happen. Do you want to send a PR to fix it?

[tonnico]

Yes, I check the code.