Re: [Qemu-devel] [RFC 1/3] qemu-ga: add support for events

["Tomáš Golembiovský" <tgolembi@redhat.com>]

On Fri, 7 Jul 2017 15:53:37 -0500
Eric Blake <eblake@redhat.com> wrote:

> On 06/23/2017 08:02 AM, Tomáš Golembiovský wrote:
> > Events can play an integral role when monitoring internal state of the
> > guest OS. This patch adds the core functionality for adding events to
> > QEMU Guest Agent.  
> 
> Will sending events confuse existing clients that aren't expecting them?
> Do we need to add some sort of protocol handshake when the client first
> connects so that we know whether the client is able to parse events
> (including ignoring unknown events)?  (It's a shame that events were
> built into QMP from the beginning, so we've never had to figure out how
> to portably hand-shake a client/server negotiation on additional
> features to be used across the wire)

You're probably right. Something like this will be necessary.

> 
> -- 
> Eric Blake, Principal Software Engineer
> Red Hat, Inc.           +1-919-301-3266
> Virtualization:  qemu.org | libvirt.org
> 


-- 
Tomáš Golembiovský <tgolembi@redhat.com>