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Add support for memory failure event callbacks

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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé
2020-11-12 14:51:56 +00:00
parent ae219e3480
commit 417b39049e
3 changed files with 75 additions and 0 deletions
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5
examples/event-test.py
View File

@ -636,6 +636,10 @@ def myDomainEventBlockThresholdCallback(conn: libvirt.virConnect, dom: libvirt.v
print("myDomainEventBlockThresholdCallback: Domain %s(%s) block device %s(%s) threshold %d exceeded by %d" % (
dom.name(), dom.ID(), dev, path, threshold, excess))
def myDomainEventMemoryFailureCallback(conn: libvirt.virConnect, dom: libvirt.virDomain, recipient: int, action: int, flags: int, opaque: _T) -> None:
print("myDomainEventMemoryFailureCallback: Domain %s(%s) memory failure recipient %d action %d flags %d" % (
dom.name(), dom.ID(), recipient, action, flags))
##########################################################################
# Network events
@ -788,6 +792,7 @@ def main() -> None:
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_DEVICE_REMOVAL_FAILED, myDomainEventDeviceRemovalFailedCallback, None),
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_METADATA_CHANGE, myDomainEventMetadataChangeCallback, None),
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD, myDomainEventBlockThresholdCallback, None),
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_MEMORY_FAILURE, myDomainEventMemoryFailureCallback, None),
]
netcallbacks = [

9
libvirt-override-virConnect.py
View File

@ -261,6 +261,15 @@
cb(self, virDomain(self, _obj=dom), dev, path, threshold, excess, opaque)
return 0
def _dispatchDomainEventMemoryFailureCallback(self, dom: 'virDomain', recipient: int, action: int, flags: int, cbData: Dict[str, Any]) -> int:
"""Dispatches event to python user domain memory failure event callbacks
"""
cb = cbData["cb"]
opaque = cbData["opaque"]
cb(self, virDomain(self, _obj=dom), recipient, action, flags, opaque)
return 0
def domainEventDeregisterAny(self, callbackID: int) -> None:
"""Removes a Domain Event Callback. De-registering for a
domain callback will disable delivery of this event type """

61
libvirt-override.c
View File

@ -7254,6 +7254,62 @@ libvirt_virConnectDomainEventBlockThresholdCallback(virConnectPtr conn ATTRIBUTE
#endif /* VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD */
#ifdef VIR_DOMAIN_EVENT_ID_MEMORY_FAILURE
static int
libvirt_virConnectDomainEventMemoryFailureCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
virDomainPtr dom,
int recipient,
int action,
unsigned int flags,
void *opaque)
{
PyObject *pyobj_cbData = (PyObject*)opaque;
PyObject *pyobj_dom;
PyObject *pyobj_ret = NULL;
PyObject *pyobj_conn;
PyObject *dictKey;
int ret = -1;
LIBVIRT_ENSURE_THREAD_STATE;
if (!(dictKey = libvirt_constcharPtrWrap("conn")))
goto cleanup;
pyobj_conn = PyDict_GetItem(pyobj_cbData, dictKey);
Py_DECREF(dictKey);
/* Create a python instance of this virDomainPtr */
virDomainRef(dom);
if (!(pyobj_dom = libvirt_virDomainPtrWrap(dom))) {
virDomainFree(dom);
goto cleanup;
}
Py_INCREF(pyobj_cbData);
/* Call the Callback Dispatcher */
pyobj_ret = PyObject_CallMethod(pyobj_conn,
(char*)"_dispatchDomainEventMemoryFailureCallback",
(char*)"OiiiO",
pyobj_dom, recipient, action, flags,
pyobj_cbData);
Py_DECREF(pyobj_cbData);
Py_DECREF(pyobj_dom);
cleanup:
if (!pyobj_ret) {
DEBUG("%s - ret:%p\n", __FUNCTION__, pyobj_ret);
PyErr_Print();
} else {
Py_DECREF(pyobj_ret);
ret = 0;
}
LIBVIRT_RELEASE_THREAD_STATE;
return ret;
}
#endif /* VIR_DOMAIN_EVENT_ID_MEMORY_FAILURE */
static PyObject *
libvirt_virConnectDomainEventRegisterAny(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
@ -7379,6 +7435,11 @@ libvirt_virConnectDomainEventRegisterAny(PyObject *self ATTRIBUTE_UNUSED,
cb = VIR_DOMAIN_EVENT_CALLBACK(libvirt_virConnectDomainEventBlockThresholdCallback);
break;
#endif /* VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD */
#ifdef VIR_DOMAIN_EVENT_ID_MEMORY_FAILURE
case VIR_DOMAIN_EVENT_ID_MEMORY_FAILURE:
cb = VIR_DOMAIN_EVENT_CALLBACK(libvirt_virConnectDomainEventMemoryFailureCallback);
break;
#endif /* VIR_DOMAIN_EVENT_ID_MEMORY_FAILURE */
case VIR_DOMAIN_EVENT_ID_LAST:
break;
}