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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/eve...
>>>
>>>>
>>>
>>>
>>>>
>>>>
[2]
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"
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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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