Description

This PR addresses memory leak issue in the exporter and reader by using the weakref library.

The solution, proposed by @aabmass, utilizes weakref.WeakMethod and weakref.WeakSet to ensure proper garbage collection and prevent unintended object retention.

Discussion can be found in the following issue - Fixes #4220

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

It has been covered by a test case.

============================= test session starts ==============================
collecting ... collected 1 item

test_provider_shutdown.py::TestMeterProviderShutdown::test_meter_provider_shutdown_cleans_up_successfully PASSED [100%]

============================== 1 passed in 0.08s ===============================

Does This PR Require a Contrib Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated