- Remove usage of % with logs, just let the underlying
LOG do the interpolation for us if the log level passes.
- Use LOG.exception instead of LOG.warn and then including
the exception as a interpolated variable. Just let the
LOG.exception output the exception trace and info.
- Capture the failure object before doing other work using
a new context manager that can yield back a failure object
before further code is called (to avoid a context switch
happening in eventlet or elsewhere that would clear the
exception state).
Change-Id: Ic1a504ba69c56ba226b1a067b5ade4590c245dd8