Hi Adrian. Anyway, I think `Taskflow` is useful to manage jobs which take a long time. So if we don’t use taskflow to manage bay status, we should use this to manage k8s resources.
-- OTSUKA, Motohiro Sent with Sparrow (http://www.sparrowmailapp.com/?sig) On Tuesday, March 10, 2015 at 07:53, Adrian Otto wrote: > Magnum Team, > > In the following review, we have the start of a discussion about how to > tackle bay status: > > https://review.openstack.org/159546 > > I think a key issue here is that we are not subscribing to an event feed from > Heat to tell us about each state transition, so we have a low degree of > confidence that our state will match the actual state of the stack in > real-time. At best, we have an eventually consistent state for Bay following > a bay creation. > > Here are some options for us to consider to solve this: > > 1) Propose enhancements to Heat (or learn about existing features) to emit a > set of notifications upon state changes to stack resources so the state can > be mirrored in the Bay resource. > > 2) Spawn a task to poll the Heat stack resource for state changes, and > express them in the Bay status, and allow that task to exit once the stack > reaches its terminal (completed) state. > > 3) Don’t store any state in the Bay object, and simply query the heat stack > for status as needed. > > Are each of these options viable? Are there other options to consider? What > are the pro/con arguments for each? > > Thanks, > > Adrian > > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > (mailto:openstack-dev-requ...@lists.openstack.org?subject:unsubscribe) > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > >
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