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This introduces a new event type VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON This event is the same as the previous VIR_DOMAIN_ID_IO_ERROR event, but also includes a string describing the cause of the event. Thus there is a new callback definition for this event type typedef void (*virConnectDomainEventIOErrorReasonCallback)(virConnectPtr conn, virDomainPtr dom, const char *srcPath, const char *devAlias, int action, const char *reason, void *opaque); This is currently wired up to the QEMU block IO error events * daemon/remote.c: Dispatch IO error events to client * examples/domain-events/events-c/event-test.c: Watch for IO error events * include/libvirt/libvirt.h.in: Define new IO error event ID and callback signature * src/conf/domain_event.c, src/conf/domain_event.h, src/libvirt_private.syms: Extend API to handle IO error events * src/qemu/qemu_driver.c: Connect to the QEMU monitor event for block IO errors and emit a libvirt IO error event * src/remote/remote_driver.c: Receive and dispatch IO error events to application * src/remote/remote_protocol.x: Wire protocol definition for IO error events * src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h, src/qemu/qemu_monitor_json.c: Watch for BLOCK_IO_ERROR event from QEMU monitor
149 lines
5.6 KiB
Python
149 lines
5.6 KiB
Python
def __del__(self):
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try:
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for cb,opaque in self.domainEventCallbacks.items():
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del self.domainEventCallbacks[cb]
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self.domainEventCallbacks = None
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libvirtmod.virConnectDomainEventDeregister(self._o, self)
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except AttributeError:
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pass
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if self._o != None:
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libvirtmod.virConnectClose(self._o)
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self._o = None
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def domainEventDeregister(self, cb):
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"""Removes a Domain Event Callback. De-registering for a
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domain callback will disable delivery of this event type """
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try:
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del self.domainEventCallbacks[cb]
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if len(self.domainEventCallbacks) == 0:
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ret = libvirtmod.virConnectDomainEventDeregister(self._o, self)
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if ret == -1: raise libvirtError ('virConnectDomainEventDeregister() failed', conn=self)
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except AttributeError:
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pass
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def domainEventRegister(self, cb, opaque):
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"""Adds a Domain Event Callback. Registering for a domain
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callback will enable delivery of the events """
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try:
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self.domainEventCallbacks[cb] = opaque
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except AttributeError:
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self.domainEventCallbacks = {cb:opaque}
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ret = libvirtmod.virConnectDomainEventRegister(self._o, self)
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if ret == -1: raise libvirtError ('virConnectDomainEventRegister() failed', conn=self)
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def dispatchDomainEventCallbacks(self, dom, event, detail):
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"""Dispatches events to python user domain event callbacks
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"""
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try:
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for cb,opaque in self.domainEventCallbacks.items():
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cb(self,dom,event,detail,opaque)
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return 0
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except AttributeError:
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pass
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def dispatchDomainEventLifecycleCallback(self, dom, event, detail, cbData):
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"""Dispatches events to python user domain lifecycle event callbacks
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"""
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), event, detail, opaque)
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return 0
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def dispatchDomainEventGenericCallback(self, dom, cbData):
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"""Dispatches events to python user domain generic event callbacks
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"""
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try:
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), opaque)
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return 0
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except AttributeError:
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pass
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def dispatchDomainEventRTCChangeCallback(self, dom, offset, cbData):
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"""Dispatches events to python user domain RTC change event callbacks
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"""
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try:
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), offset ,opaque)
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return 0
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except AttributeError:
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pass
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def dispatchDomainEventWatchdogCallback(self, dom, action, cbData):
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"""Dispatches events to python user domain watchdog event callbacks
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"""
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try:
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), action, opaque)
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return 0
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except AttributeError:
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pass
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def dispatchDomainEventIOErrorCallback(self, dom, srcPath, devAlias, action, cbData):
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"""Dispatches events to python user domain IO error event callbacks
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"""
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try:
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), srcPath, devAlias, opaque)
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return 0
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except AttributeError:
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pass
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def dispatchDomainEventIOErrorReasonCallback(self, dom, srcPath, devAlias, action, reason, cbData):
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"""Dispatches events to python user domain IO error event callbacks
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"""
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try:
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), srcPath, devAlias, action, reason, opaque)
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return 0
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except AttributeError:
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pass
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def dispatchDomainEventGraphicsCallback(self, dom, phase, localAddr, remoteAddr, authScheme, subject, cbData):
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"""Dispatches events to python user domain graphics event callbacks
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"""
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try:
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cb = cbData["cb"]
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opaque = cbData["opaque"]
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cb(self, virDomain(self, _obj=dom), phase, localAddr, remoteAddr, authScheme, subject, opaque)
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return 0
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except AttributeError:
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pass
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def domainEventDeregisterAny(self, callbackID):
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"""Removes a Domain Event Callback. De-registering for a
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domain callback will disable delivery of this event type """
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try:
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ret = libvirtmod.virConnectDomainEventDeregisterAny(self._o, callbackID)
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if ret == -1: raise libvirtError ('virConnectDomainEventDeregisterAny() failed', conn=self)
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del self.domainEventCallbackID[callbackID]
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except AttributeError:
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pass
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def domainEventRegisterAny(self, dom, eventID, cb, opaque):
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"""Adds a Domain Event Callback. Registering for a domain
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callback will enable delivery of the events """
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if not hasattr(self, 'domainEventCallbackID'):
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self.domainEventCallbackID = {}
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cbData = { "cb": cb, "conn": self, "opaque": opaque }
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if dom is None:
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ret = libvirtmod.virConnectDomainEventRegisterAny(self._o, None, eventID, cbData)
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else:
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ret = libvirtmod.virConnectDomainEventRegisterAny(self._o, dom._o, eventID, cbData)
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if ret == -1:
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raise libvirtError ('virConnectDomainEventRegisterAny() failed', conn=self)
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self.domainEventCallbackID[ret] = opaque
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