This repository was archived by the owner on Oct 1, 2025. It is now read-only.
This repository was archived by the owner on Oct 1, 2025. It is now read-only.
Improve affix_stack error on Affix file / class name mismatch #63
Description
If the file containing an Affix component class is not named class name (in lower case) + .r2py, then calling affix_stack.find_and_register_affix might succeed importing, but fail registering internally the component, and throw a rather unspecific KeyError.
In the code leading to the traceback below,
transparenttcprelayaffix.r2pydefines aclass Transparent_TCPRelayAffix;- the user code tries to instantiate an Affix stack including
TransparentTCPRelayAffix(which yields the filename when.lowered, but is not the class name), and - when
affix_stack.find_and_register_affixtries to copy the Affix's_context, that context (named after the class) doesn't exist, resulting in theKeyError.
It would be a good idea to check for this mismatch, and raise a more descriptive error message. (I assume a developer running unit tests would catch it very early on in the development, and trivially correct this mistake).
Uncaught exception! --- Following is a full traceback, and a user traceback. The user traceback excludes non-user modules. The most recent call is displayed last. Full debugging traceback: "repy.py", line 154, in execute_namespace_until_completion "/private/tmp/affix/RUNNABLE/virtual_namespace.py", line 117, in evaluate "/private/tmp/affix/RUNNABLE/safe.py", line 588, in safe_run "dylink.r2py", line 546, in <module> "dylink.r2py", line 407, in dylink_dispatch "dylink.r2py", line 520, in evaluate "/private/tmp/affix/RUNNABLE/virtual_namespace.py", line 117, in evaluate "/private/tmp/affix/RUNNABLE/safe.py", line 588, in safe_run "test-ttr.r2py", line 5, in <module> "affix_stack.r2py", line 32, in __init__ "affix_stack.r2py", line 133, in build_stack "affix_stack.r2py", line 218, in find_and_register_affix "/private/tmp/affix/RUNNABLE/safe.py", line 678, in __getitem__ User traceback: "dylink.r2py", line 546, in <module> "dylink.r2py", line 407, in dylink_dispatch "dylink.r2py", line 520, in evaluate "test-ttr.r2py", line 5, in <module> "affix_stack.r2py", line 32, in __init__ "affix_stack.r2py", line 133, in build_stack "affix_stack.r2py", line 218, in find_and_register_affix Exception (with type 'exceptions.KeyError'): 'Transparent_TCPRelayAffix'