Re: [virt-manager] [PATCH 2/4] Output the qemu guest agent lifecycle events in debug mode

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On 06/24/2018 11:46 PM, Lin Ma wrote:
> Signed-off-by: Lin Ma <lma@xxxxxxxx>
> ---
>  virtManager/connection.py | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/virtManager/connection.py b/virtManager/connection.py
> index 76e78c49..0b83bccf 100644
> --- a/virtManager/connection.py
> +++ b/virtManager/connection.py
> @@ -763,6 +763,12 @@ class vmmConnection(vmmGObject):
>          else:
>              self.schedule_priority_tick(pollvm=True, force=True)
>  
> +    def _domain_agent_lifecycle_event(self, conn, domain, state, reason, userdata):
> +
> +        name = domain.name()
> +        logging.debug("domain agent lifecycle event: domain=%s %s", name,
> +                LibvirtEnumMap.domain_agent_lifecycle_str(state, reason))
> +

I'm guessing pylint here warns about unused arguments?

>      def _network_lifecycle_event(self, conn, network, state, reason, userdata):
>          ignore = conn
>          ignore = userdata
> @@ -842,6 +848,10 @@ class vmmConnection(vmmGObject):
>                  self.get_backend().domainEventRegisterAny(
>                  None, libvirt.VIR_DOMAIN_EVENT_ID_LIFECYCLE,
>                  self._domain_lifecycle_event, None))
> +            self._domain_cb_ids.append(
> +                self.get_backend().domainEventRegisterAny(
> +                None, libvirt.VIR_DOMAIN_EVENT_ID_AGENT_LIFECYCLE,
> +                self._domain_agent_lifecycle_event, None))
>              self.using_domain_events = True
>              logging.debug("Using domain events")
>          except Exception as e:
> 

I don't like that if we fail registering agent events, we will disable
domain events entirely. I'd rather have it work like the xml misc events
below, where we just log a message if it fails. In fact can this be
folded into the xml misc events somehow?

Thanks,
Cole

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