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21.08.2013 12:58, Alexandr пишет:
> 21.08.2013 12:39, Daniel P. Berrange пишет:
>> On Wed, Aug 21, 2013 at 12:36:06PM +0300, Alexandr wrote:
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>>>
>>> 21.08.2013 09:46, Alexandr пишет:
>>>> 21.08.2013 09:32, Martin Kletzander пишет:
>>>>> On Wed 21 Aug 2013 01:03:37 AM CEST, Alexandr wrote:
>>>>>>
>>>>>> good day. i trying to make callback function for
>>>>>> VIR_DOMAIN_EVENT_ID_LIFECYCLE, i have successfully
>>>>>> registering callback, but it never called, i need to
>>>>>> know when domain started, stopped or crashed, i have
>>>>>> write following code
>>>>>>
>>>>>> static int domain_event_handler(virConnectPtr conn,
>>>>>> virDomainPtr dom, int event, int detail, void * opaque) {
>>>>>> switch(event) { } return 0; }
>>>>>>
>>>>>> ..... int callback =
>>>>>> virConnectDomainEventRegisterAny(libvirt_connection,
>>>>>> NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
>>>>>> VIR_DOMAIN_EVENT_CALLBACK(domain_event_handler), NULL,
>>>>>> NULL); if(callback == -1) { std::cout<<"Error: failed to
>>>>>> register domain event handle callback\n"; return -1; }
>>>>>> .....
>>>>>>
>>>>>>
>>>>>> but "domain_event_handler" is never called, what is
>>>>>> wrong here ?
>>>>
>>>>> Are you running an event loop? You can have a look at our
>>>>> examples [1] and see what's being done there. Especially
>>>>> note the virEventRunDefaultImpl() [2] there.
>>>>
>>>>> Martin
>>>>
>>>>> [1]
>>>>> http://libvirt.org/git/?p=libvirt.git;a=blob;f=examples/domain-events/events-c/event-test.c;h=52aa3d08d7326e422c12a8521717c3d55b2d8afd;hb=HEAD
>>>>
>>>>>
>>>>
>>>>
>>>>>
>
>>>>>
[2]
>>>>> http://libvirt.org/git/?p=libvirt.git;a=blob;f=examples/domain-events/events-c/event-test.c;h=52aa3d08d7326e422c12a8521717c3d55b2d8afd;hb=HEAD#l611
>>>>
>>>>>
>>>>
>>>>
>>>>>
>
>>>>>
oh..., i missed it, thx for hint and sorry for stupid questions .
>>>
>>> now it's working except for events from other connections, for
>>> example i want to handle domain started by virt-manager, now i
>>> do not have event when it's started, is exists any api to
>>> handle this events, or i need to implement internal polling of
>>> domains state in my application ?
>
>> The events system reports all lifecycle events, regardless of
>> which connection triggered them.
>
>> If you're not seeing events from domains started by virt-manager
>> then your almost certainly connecting to a different libvirt URI
>> than virt-manager is using.
>
>> Daniel
>
> also looks like i do not receiving last event, i mean last event
> what passed to callback is "eventcount - 1"
>
> _______________________________________________ libvirt-users
> mailing list libvirt-users@xxxxxxxxxx
> https://www.redhat.com/mailman/listinfo/libvirt-users
>
after few days of trying i have not resolved problem, and have
followinf situation: i receiving events from my connection sometimes
(not all and not always), i do not receiving events from other
connections (virt-manager) at all (i am sure that connection url are
same for both connections), my code follows:
static int domain_event_handler(virConnectPtr conn, virDomainPtr dom,
int event, int detail, void * opaque)
{
std::cout<<"domain event handler called\n";
}
void libvirt_eventloop_thr_func()
{
while(true) //TODO: stop somehow on exit
{
if(virEventRunDefaultImpl() < 0)
{
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to run event loop: %s\n", err &&
err->message ? err->message : "Unknown error");
}
}
}
....
virSetErrorFunc(NULL, libvirt_error_handler);
libvirt_connection = virConnectOpen("qemu:///system");
if(libvirt_connection == NULL)
{
std::cout<<"failed to connect to qemu:///system\n";
return -1;
}
std::cout<<"connected to qemu:///system\n";
if (virEventRegisterDefaultImpl() < 0)
{
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to register event implementation: %s\n", err
&& err->message ? err->message: "Unknown error");
return -1;
}
{
int callback = virConnectDomainEventRegisterAny(libvirt_connection,
NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
VIR_DOMAIN_EVENT_CALLBACK(domain_event_handler), NULL, NULL);
if(callback == -1)
{
std::cout<<"Error: failed to register domain event handle callback\n";
return -1;
}
}
boost::thread(boost::bind(&libvirt_eventloop_thr_func));
....
am i doing something wrong here ?
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