Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Doug Hellmann
On Fri, May 18, 2012 at 11:40 AM, Eric Windisch wrote: > > > > > > > a) the queue must guaranty the delivery of messages. > > To the contrary of monitoring, loss of events may have important billing > > impacts, it therefore cannot be an option that message be lost. > > Losing messages should alwa

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Caitlin Bestler
Nick Barcet wrote: > a) the queue must guaranty the delivery of messages. > To the contrary of monitoring, loss of events may have important billing > impacts, it therefore cannot be an option that message be lost. I don't think absolute reliability is desirable for this application. SCTP part

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Eric Windisch
> > > a) the queue must guaranty the delivery of messages. > To the contrary of monitoring, loss of events may have important billing > impacts, it therefore cannot be an option that message be lost. Losing messages should always be an option, in the extreme cases. If a message is undeliverabl

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Doug Hellmann
On Fri, May 18, 2012 at 11:02 AM, Eric Windisch wrote: > The nova rpc implementation is moving into openstack common, I agree with > using this abstraction. > That's a good point, I forgot about that. > > As per ZeroMQ, I'm the author of that plugin. There is a downloadable > plugin for Essex a

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Eric Windisch
The nova rpc implementation is moving into openstack common, I agree with using this abstraction. As per ZeroMQ, I'm the author of that plugin. There is a downloadable plugin for Essex and I'm preparing to make a Folsom merge prop within the next week or so, if all goes well. Sent from my iPad

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Julien Danjou
On Fri, May 18 2012, Doug Hellmann wrote: > While I see the benefit of discussing requirements for the message bus > platform in general, I'm not sure we need to dictate a specific > implementation. If we say we are going to use the nova RPC library to > communicate with the bus for sending and re

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Adam Young
I think you want to write to the AMQP spec as much as possible and allow multiple implementations. Opentack supports Rabit MQ and QPID, and you should be able to use either. On 05/18/2012 04:42 AM, Nick Barcet wrote: Hello everyone, Next week's irc meeting will have for goal to choose a re

Re: [Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Doug Hellmann
On Fri, May 18, 2012 at 4:42 AM, Nick Barcet wrote: > Hello everyone, > > Next week's irc meeting will have for goal to choose a reference > messaging queue service for the ceilometer project. For this meeting to > be able to be successful, a discussion on the choices that we have to > make need

[Openstack] [metering] Choice of a messaging queue

2012-05-18 Thread Nick Barcet
Hello everyone, Next week's irc meeting will have for goal to choose a reference messaging queue service for the ceilometer project. For this meeting to be able to be successful, a discussion on the choices that we have to make need to occur first right here. To open the discussion here are a fe