deb-cinder/HACKING.rst
Sean McGinnis adfff0b141 Remove use of deprecated LOG.warn
LOG.warn is deprecated and LOG.warning should be used.

This patch fixes up instances of LOG.warn usage and adds a
hacking check to make sure it doesn't creep back in.

See Logger.warning note here for background:
https://docs.python.org/3/library/logging.html

Also cleaned up some remaining instances where logging was
preformatting strings rather than passing in formatting
arguments to the logger to handle.

Change-Id: Id2e6cba489d8509601820b5aed83652f71be2bdc
2015-05-13 10:51:45 -05:00

2.3 KiB

Cinder Style Commandments

Cinder Specific Commandments

  • [N314] Check for vi editor configuration in source files.
  • [N319] Validate that debug level logs are not translated
  • [N322] Ensure default arguments are not mutable.
  • [N323] Add check for explicit import of _() to ensure proper translation.
  • [N325] str() and unicode() cannot be used on an exception. Remove or use six.text_type().
  • [N327] assert_called_once is not a valid Mock method.
  • [N328] LOG.info messages require translations _LI().
  • [N329] LOG.exception and LOG.error messages require translations _LE().
  • [N330] LOG.warning messages require translations _LW().
  • [N333] Ensure that oslo namespaces are used for namespaced libraries.
  • [C301] timeutils.utcnow() from oslo_utils should be used instead of datetime.now().
  • [C302] six.text_type should be used instead of unicode
  • [C303] Ensure that there are no 'print()' statements in code that is being committed.
  • [C304] Enforce no use of LOG.audit messages. LOG.info should be used instead.
  • [C305] Prevent use of deprecated contextlib.nested.
  • [C306] timeutils.strtime() must not be used (deprecated).
  • [C307] LOG.warn is deprecated. Enforce use of LOG.warning.

General

  • Use 'raise' instead of 'raise e' to preserve original traceback or exception being reraised:

    except Exception as e:
        ...
        raise e  # BAD
    
    except Exception:
        ...
        raise  # OKAY

Creating Unit Tests

For every new feature, unit tests should be created that both test and (implicitly) document the usage of said feature. If submitting a patch for a bug that had no unit test, a new passing unit test should be added. If a submitted bug fix does have a unit test, be sure to add a new one that fails without the patch and passes with the patch.

Cinder is transitioning to use mock, rather than mox, and so new tests should use mock only.

For more information on creating unit tests and utilizing the testing infrastructure in OpenStack Cinder, please read the Cinder testing README.rst.