Exception when running harvesters with HARVESTERS_LOG_BUFFER_MANIPULATION enabled

[StefanD986]

Describe the Bug
When running Harvesters with the environment variable HARVESTERS_LOG_BUFFER_MANIPULATION set to True, Harvesters will throw an exception.

To Reproduce
Steps to reproduce the behavior:

1. Set environment variable HARVESTERS_LOG_BUFFER_MANIPULATION to True
2. Copy the minimal example script attached at the end of this issue and adapt the path to the cti file!
3. Run the minimal example script
4. Observe log output

Expected Behavior
No errors

Actual Behavior
The following error message can be seen:

Traceback (most recent call last):
  File "C:/Users/Stefan/AppData/Roaming/JetBrains/PyCharm2021.3/scratches/scratch_22.py", line 31, in <module>
    main()
  File "C:/Users/Stefan/AppData/Roaming/JetBrains/PyCharm2021.3/scratches/scratch_22.py", line 23, in main
    pass
  File "c:\users\stefan\pycharmprojects\harvesters\src\harvesters\core.py", line 1160, in __exit__
    self.queue()
  File "c:\users\stefan\pycharmprojects\harvesters\src\harvesters\core.py", line 1257, in queue
    _family_tree(self._buffer.module.parent)
  File "C:\Users\Stefan\.venvs\fipy38\lib\site-packages\genicam\gentl.py", line 4260, in <lambda>
    __getattr__ = lambda self, name: _swig_getattr(self, Buffer, name)
  File "C:\Users\Stefan\.venvs\fipy38\lib\site-packages\genicam\gentl.py", line 93, in _swig_getattr
    raise AttributeError("'%s' object has no attribute '%s'" % (class_type.__name__, name))
AttributeError: 'Buffer' object has no attribute 'module'

Configuration

• OS: Windows
• Python: 3.8
• Harvester: from git (see below)
• GenTL Producer: Matrix Vision
• Camera: Xenics Bobcat

Reproducibility
I bisected through the harvesters commits, and the first commit that shows this issue is 3d579a7dc917f7bb25333997cd9ac5b8cd29d5f0

This phenomenon can be reproduced by other versions:

• [x ] Yes, all commits between at least 3d579a7dc917f7bb25333997cd9ac5b8cd29d5f0 and master (as of to date) are affected

Actions You Have Taken

• I've read the Harvester FAQ page.

Additional context

import logging

from harvesters.core import Harvester, ImageAcquirer

FORMAT = '%(name)s - %(asctime)s: %(message)s'
logging.basicConfig(level=logging.DEBUG, format=FORMAT)
logger = logging.getLogger('test_application')

def main():
    h = Harvester(logger=logging.getLogger("harvesters"))

    h.add_file(
        "!!!!CHANGE_ME!!!!/mvGenTLProducer.cti"
    )
    h.update()

    logger.info(f"{h.device_info_list=}")

    ia = h.create_image_acquirer(0)
    ia.start_acquisition()

    with ia.fetch_buffer() as buffer:
        pass

    ia.stop_acquisition()  # Harvesters will lock up here.

    ia.destroy()
    h.reset()

if __name__ == '__main__':
    main()

[kazunarikudo]

@StefanD986 Hi, thank you for the report. I will fix that. Regards, Kazunari.