On 09/18/2013 10:40 PM, Fei Long Wang wrote: > Hi Sandy, > > Thanks for the clear explanation. Another question, you mentioned that > "One project recently ran into this problem when they were generating > non-dict payloads on exceptions. ", would you mind telling me more about > the problem? Since Glance is reviewing a similar patch. Thanks. I guess > another project is consuming the malformed notification and got a > failure, is it?
Cool! Actually that patch is a fix from our team. :) We ran into it in StackTach, but it would affect Ceilometer as well. The assumption is that the payload is a dict and getting something different was breaking things. Cheers! -S > > Thanks & Best regards, > Fei Long Wang (王飞龙) > --------------------------------------------------------------------- > Tech Lead of Nitrogen (SME team) > Cloud Solutions and OpenStack Development > Tel: 8610-82450513 | T/L: 905-0513 > Email: flw...@cn.ibm.com > China Systems & Technology Laboratory in Beijing > --------------------------------------------------------------------- > > > Inactive hide details for Sandy Walsh ---09/18/2013 08:43:03 PM---On > 09/18/2013 04:49 AM, Fei Long Wang wrote: > Hi Sandy,Sandy Walsh > ---09/18/2013 08:43:03 PM---On 09/18/2013 04:49 AM, Fei Long Wang wrote: >> Hi Sandy, > > From: Sandy Walsh <sandy.wa...@rackspace.com> > To: Fei Long Wang/China/IBM@IBMCN, > Cc: "openstack@lists.openstack.org" <openstack@lists.openstack.org> > Date: 09/18/2013 08:43 PM > Subject: Re: [Openstack] Notification Usage in OpenStack ... a report card > > ------------------------------------------------------------------------ > > > > > > On 09/18/2013 04:49 AM, Fei Long Wang wrote: >> Hi Sandy, >> >> It's an awesome post. Just some minor questions. > > Thanks! > >> 1. Are you aware of any project is using Oslo.Messaging? Actually, just >> like you know, the porting of Glance Oslo notifier is pending. And the >> main reason is Oslo.Messaging is coming. > > Daniel answered this, but yes, the intention is to move to oslo.messaging. > > Notifications are different than the olso rpc mechanism in a couple of ways: > > 1. they support requeue semantics. We can push notifications back on the > queue if the consumer can't deal with it. > > 2. they don't require a method with parameters on the consuming end. The > consumer can just pull the notification off the queue and work on it. > It's just a blob of data. > > 3. Later, we'll likely want to support dead-letter queues for > notifications that could not be processed. We don't want to lose these > messages. > > So long as this is supported in Messaging, we're fine. > >> 2. You mentioned that Glance implement the audit partially, could you >> please explain more from your point of view? Thanks. > > The "Importance of Usage Notifications" section sort of addresses this. > For billing purposes there should ideally be two notifications emitted. > The first would be the individual notifications for each billable action > (these could be incremental updates) and the second would be a summary > notification to indicate what the image or tenant cost for the day. The > consumer could then verify that the incremental notifications and the > end-of-day summary matches. > > Glance only supports the incremental notifications currently, iirc. > > I think the image transfers are the only real billable event in Glance > right now. Not sure if image storage (snapshots for backup) would be > another. > > Hope it helps! > -S > > >> >> Thanks & Best regards, >> Fei Long Wang (王飞龙) >> --------------------------------------------------------------------- >> Tech Lead of Nitrogen (SME team) >> Cloud Solutions and OpenStack Development >> Tel: 8610-82450513 | T/L: 905-0513 >> Email: flw...@cn.ibm.com >> China Systems & Technology Laboratory in Beijing >> --------------------------------------------------------------------- >> >> >> Inactive hide details for Sandy Walsh ---09/17/2013 02:27:00 AM---Hey >> y'all! I took a little time to review most of the OpenStaSandy Walsh >> ---09/17/2013 02:27:00 AM---Hey y'all! I took a little time to review >> most of the OpenStack projects and check on their notifica >> >> From: Sandy Walsh <sandy.wa...@rackspace.com> >> To: "openstack@lists.openstack.org" <openstack@lists.openstack.org>, >> Date: 09/17/2013 02:27 AM >> Subject: [Openstack] Notification Usage in OpenStack ... a report card >> >> ------------------------------------------------------------------------ >> >> >> >> Hey y'all! >> >> I took a little time to review most of the OpenStack projects and check >> on their notification support. Happy to say, adoption is good. There are >> things we could do better, but overall very positive. >> >> The article also talks a little about what makes for good notification >> support. Something for you all to think about at the Icehouse summit :) >> >> I'm sure I've made some mistakes along the way, so please let me know >> and I'll fix accordingly. >> >> > http://www.sandywalsh.com/2013/09/notification-usage-in-openstack-report.html >> >> Look forward to your feedback! >> >> -Sandy >> _______________________________________________ >> Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >> > > _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
