Hello Cisco Community,
I've encountered what appears to be a bug in the DataCallbacks class implementation, specifically within the register method that is responsible for ensuring a data handler implements required methods. I would appreciate some guidance on whether this is indeed an issue, and if so, how it might be addressed.
Problem Description: The register method is designed to check that a handler object has implemented three methods: get_object, get_next, and count. However, the method only checks for the presence of get_object for all checks, ignoring get_next and count. Here's the problematic part of the code:
missing = []
for name in ('get_object', 'find_next', 'count'):
if not _have_callable(handler, 'get_object'):
missing.append(name)
Issues:
- Method Name Error: The tuple contains 'find_next', which seems to be a typo. It should likely be 'get_next'.
- Logical Error: The loop checks if get_object is callable for each iteration, rather than checking each method as intended. This could lead to incorrect validation of the handler's capabilities.
Expected Behavior: The method should correctly iterate through each required method name and check if the handler implements each one. The correct implementation might look like this:
missing = []
for name in ('get_object', 'get_next', 'count'):
if not _have_callable(handler, name):
missing.append(name)
Questions:
- Has anyone else encountered this issue?
- Is there an existing fix or workaround that I might have missed?
- Could this be corrected in the documentation or the implementation?
Thank you for looking into this matter. I am eager to hear back from the community or the Cisco team regarding this potential issue.
