[ovirt-users] webhook

[Einav Cohen]

> ----- Original Message -----
> From: "Vojtech Szocs" <vszocs at redhat.com>
> Sent: Friday, October 31, 2014 11:51:53 AM
> 
> Hi,
> 
> if I get this correctly, you'd like to be notified when certain event
> happens (VM created/deleted/etc.) and react upon that. I see multiple
> possible approaches here:
> 
> 0, improve Engine extension API (refer to Alon Bar-Lev for details)
>    - if extensions can be packaged as JARs and these JARs could include
>      web fragments [1] it would mean the possibility to deploy custom
>      servlets onto existing Engine instance (in context of webapp that
>      processes extensions)
>    - your custom Java servlet could query REST interface (or be notified
>      once something happens, but AFAIK we don't have that implemented yet)
>      and do whatever logic is needed
>    - once I asked Alon about ^^ but never got response from him
>    - IMHO this would be a nice way to deploy custom Java code on Engine
> 
> [1] https://blogs.oracle.com/swchan/entry/servlet_3_0_web_fragment
> 
> 1, improve UI plugin API
>    - add "VirtualMachineDataLoaded" event fired upon each refresh of
>      VM data in UI table (generalization -> "{Entity}DataLoaded")
>    - this is similar to existing "{Entity}SelectionChange" events

relying on changes in the UI table is a bad idea: 

(1) potentially missing events: 
the UI displays paginated data; if my VMs are sorted by name, and 
I have 1000 VMs in my setup, and I just added a VM named "z", it will 
be added to the last "page" which is not displayed right now, so I 
wouldn't even be aware that something was added. 

(2) potentially "creating" "fake" events: 
changes in the displayed data in the UI can occur due to change in the 
Search query; if I have 50 VMs in my setup, and I initially had the 
"Vms:" search query, and now I change it to "VMs: name = a*", which 
results in displaying only 10 VMs, this may falsely hint on removal 
of 40 VMs from the system. 

> 
> 2, write UI plugin that uses oVirtJS to periodically check VM events

not sure if this is referring to VM-related events in the code (e.g. 
hooking to the click on "OK" within the New VM / Remove VM dialog, 
or hooking to the "Success" callback of the action response, or 
something similar), or to the VM-related "Events" (i.e. the ones that 
are displayed in the GUI within the Events main-tab / bottom section). 
If the former: can be done, I assume, though not sure how complex it 
would be to implement the infrastructure for that. 
If the latter: this will "catch" actions that were performed either 
via the GUI or outside the GUI; in this case, it would probably be 
better to use an Engine extension API (solution "0" above) rather 
than a UI plugin, since it will be more reliable, will be active 
even when the GUI is not in use, etc. 

> 
> The disadvantage of 1, and 2, is that WebAdmin GUI must be open.
> In any case, if you'd like to explore the possibility of doing this
> via UI plugin, I'm here to help.
> 
> Vojtech
> 
> 
> ----- Original Message -----
> > From: "Oved Ourfali" <ovedo at redhat.com>
> > To: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > Cc: "Koen Vanoppen" <vanoppen.koen at gmail.com>, users at ovirt.org, "Vojtech
> > Szocs" <vszocs at redhat.com>
> > Sent: Thursday, October 30, 2014 2:10:12 PM
> > Subject: Re: [ovirt-users] webhook
> > 
> > Hi
> > 
> > CC-ing also Vojtech, the "father" of the UI plugins.
> > 
> > Anyway, the only way to accomplish that via UI plugins at the moment is via
> > adding a new "action menu item", that in the background deleted the VM, and
> > reports to Foreman.
> > I would be nice to have a "hook" for different UI action items, but it
> > isn't
> > available at the moment.
> > There are plenty code samples for UI plugins, most of them available at:
> > http://www.ovirt.org/Features/UIPlugins
> > 
> > I must say that I'm not sure webhooks are the right approach for that, as I
> > guess it is relevant only in environments in which one doesn't use the
> > API/CLI/SDK....
> > but.. it will be a cool feature!
> > 
> > Regards,
> > Oved
> > 
> > ----- Original Message -----
> > > From: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > To: "Koen Vanoppen" <vanoppen.koen at gmail.com>
> > > Cc: "Oved Ourfali" <ovedo at redhat.com>, users at ovirt.org
> > > Sent: Thursday, October 30, 2014 1:44:38 PM
> > > Subject: Re: [ovirt-users] webhook
> > > 
> > > Oved - can we implement something like this using ui-plugins?
> > > 
> > > 
> > > ----- Original Message -----
> > > > From: "Koen Vanoppen" <vanoppen.koen at gmail.com>
> > > > To: users at ovirt.org
> > > > Sent: Monday, October 27, 2014 4:06:40 PM
> > > > Subject: [ovirt-users] webhook
> > > > 
> > > > Hi all,
> > > > 
> > > > Just a quick question. Is it possible to set a webhook on the removal
> > > > and
> > > > creation of a new vm? So we can send to foreman a delete action when
> > > > the
> > > > VM
> > > > is deleted...
> > > > 
> > > > Kind regards,
> > > > 
> > > > Koen
> > > > 
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> > 
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