On May 22, 2014, at 11:03 AM, Maru Newby <ma...@redhat.com> wrote: > At the summit session last week for group-based policy, there were many > concerns voiced about the approach being undertaken. I think those concerns > deserve a wider audience, and I'm going to highlight some of them here. > > The primary concern seemed to be related to the complexity of the approach > implemented for the POC. A number of session participants voiced concern > that the simpler approach documented in the original proposal [1] (described > in the section titled 'Policies applied between groups') had not been > implemented in addition to or instead of what appeared in the POC (described > in the section titled 'Policies applied as a group API'). The simpler > approach was considered by those participants as having the advantage of > clarity and immediate usefulness, whereas the complex approach was deemed > hard to understand and without immediate utility. > > A secondary but no less important concern is related to the impact on Neutron > of the approach implemented in the POC. The POC was developed > monolithically, without oversight through gerrit, and the resulting patches > were excessive in size (~4700 [2] and ~1500 [3] lines). Such large patches > are effectively impossible to review. Even broken down into reviewable > chunks, though, it does not seem realistic to target juno-1 for merging this > kind of complexity. The impact on stability could be considerable, and it is > questionable whether the necessary review effort should be devoted to > fast-tracking group-based policy at all, let alone an approach that is > considered by many to be unnecessarily complicated. > > The blueprint for group policy [4] is currently listed as a 'High' priority. > With the above concerns in mind, does it make sense to continue prioritizing > an effort that at present would seem to require considerably more resources > than the benefit it appears to promise? > > > Maru > > 1: https://etherpad.openstack.org/p/group-based-policy
Apologies, this link is to the summit session etherpad. The link to the original proposal is: https://docs.google.com/document/d/1ZbOFxAoibZbJmDWx1oOrOsDcov6Cuom5aaBIrupCD9E/edit > 2: https://review.openstack.org/93853 > 3: https://review.openstack.org/93935 > 4: > https://blueprints.launchpad.net/neutron/+spec/group-based-policy-abstraction > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
