amoghrajesh opened a new pull request, #60324:
URL: https://github.com/apache/airflow/pull/60324
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To make `ResourceVersion` a singleton, it doesn't have to import `Singleton`
from utils. Using the `__new__` pattern instead. Guidance from here:
https://www.geeksforgeeks.org/python/singleton-pattern-in-python-a-complete-guide/
I will deprecate the singleton library from utils in a parallel PR.
Test to verify that it works fine before and after:
```python
from airflow.providers.cncf.kubernetes.executors.kubernetes_executor_utils
import ResourceVersion
rv1 = ResourceVersion()
rv2 = ResourceVersion()
rv3 = ResourceVersion()
rv1 == rv2 == rv3
Out[3]: True
rv1.resource_version["namespace1"] = "12345"
rv2.resource_version["namespace1"] == "12345"
rv3.resource_version["namespace1"] == "12345"
Out[4]: True
import gc
instances = [obj for obj in gc.get_objects()
if type(obj).__name__ == 'ResourceVersion']
instances
Out[6]:
[<airflow.providers.cncf.kubernetes.executors.kubernetes_executor_utils.ResourceVersion
at 0x1119ea3c0>]
```
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