Commit Graph

25 Commits

Author SHA1 Message Date
Daniel P. Berrange
1465876a04 Bind connection close callback APIs to python binding
Add code in the python binding to cope with the new APIs
virConnectRegisterCloseCallback and
virConnectUnregisterCloseCallback. Also demonstrate their
use in the python domain events demo

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-12-04 13:50:11 +00:00
Martin Kletzander
7ba5defb5a Add support for SUSPEND_DISK event
This patch adds support for SUSPEND_DISK event; both lifecycle and
separated.  The support is added for QEMU, machines are changed to
PMSUSPENDED, but as QEMU sends SHUTDOWN afterwards, the state changes
to shut-off.  This and much more needs to be done in order for libvirt
to work with transient devices, wake-ups etc.  This patch is not
aiming for that functionality.
2012-10-15 12:09:10 +02:00
Osier Yang
473ee27e6a list: Expose virConnectListAllSecrets to Python binding
The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document

python/libvirt-override-virConnect.py: Implementation for listAllSecrets.

python/libvirt-override.c: Implementation for the wrapper.
2012-09-17 13:18:51 +08:00
Osier Yang
f4c1efaa9a list: Expose virConnectListAllNWFilters to Python binding
The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document

python/libvirt-override-virConnect.py:
  * Implementation for listAllNWFilters.

python/libvirt-override.c: Implementation for the wrapper.
2012-09-17 12:37:03 +08:00
Osier Yang
a3676b6cb6 list: Expose virConnectListAllNodeDevices to Python binding
The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document

python/libvirt-override-virConnect.py:
  * Implementation for listAllNodeDevices.

python/libvirt-override.c: Implementation for the wrapper.
2012-09-17 10:41:03 +08:00
Osier Yang
ec448fbf17 list: Expose virConnectListAllInterfaces to Python binding
The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document

python/libvirt-override-virConnect.py:
  * New file, includes implementation of listAllInterfaces.

python/libvirt-override.c: Implementation for the wrapper.
2012-09-12 15:37:09 +08:00
Osier Yang
9cc4270112 list: Expose virConnectListAllNetworks to Python binding
The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document

python/libvirt-override-virConnect.py: Implement listAllNetworks.

python/libvirt-override.c: Implementation for the wrapper.
2012-09-11 18:35:14 +08:00
Osier Yang
9278578069 python: Expose virStorageListAllStoragePools to python binding
The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document
python/libvirt-override-virConnect.py: Add listAllStoragePools
python/libvirt-override.c: Implementation for the wrapper.
2012-09-06 22:16:11 +08:00
Daniel P. Berrange
7ed6d7dda7 Define public API for receiving guest memory balloon events
When the guest changes its memory balloon applications may want
to know what the new value is, without having to periodically
poll on XML / domain info. Introduce a "balloon change" event
to let apps see this

* include/libvirt/libvirt.h.in: Define the
  virConnectDomainEventBalloonChangeCallback callback
  and VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE constant
* python/libvirt-override-virConnect.py,
  python/libvirt-override.c: Wire up helpers for new event
* daemon/remote.c: Helper for serializing balloon event
* examples/domain-events/events-c/event-test.c,
  examples/domain-events/events-python/event-test.py: Add
  example of balloon event usage
* src/conf/domain_event.c, src/conf/domain_event.h: Handling
  of balloon events
* src/remote/remote_driver.c: Add handler of balloon events
* src/remote/remote_protocol.x: Define wire protocol for
  balloon events
* src/remote_protocol-structs: Likewise.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-07-14 16:02:26 +08:00
Peter Krempa
bd34cc8c45 python: add API exports for virConnectListAllDomains()
This patch adds export of the new API function
virConnectListAllDomains() to the libvirt-python bindings. The
virConnect object now has method "listAllDomains" that takes only the
flags parameter and returns a python list of virDomain object
corresponding to virDomainPtrs returned by the underlying api.

The implementation is done manually as the generator does not support
wrapping list of virDomainPtrs into virDomain objects.
2012-06-18 21:24:13 +02:00
Osier Yang
487c063381 Add support for the suspend event
This patch introduces a new event type for the QMP event
SUSPEND:

    VIR_DOMAIN_EVENT_ID_PMSUSPEND

The event doesn't take any data, but considering there might
be reason for wakeup in future, the callback definition is:

typedef void
(*virConnectDomainEventSuspendCallback)(virConnectPtr conn,
                                        virDomainPtr dom,
                                        int reason,
                                        void *opaque);

"reason" is unused currently, always passes "0".
2012-03-23 23:12:18 +08:00
Osier Yang
57ddcc235a Add support for the wakeup event
This patch introduces a new event type for the QMP event
WAKEUP:

    VIR_DOMAIN_EVENT_ID_PMWAKEUP

The event doesn't take any data, but considering there might
be reason for wakeup in future, the callback definition is:

typedef void
(*virConnectDomainEventWakeupCallback)(virConnectPtr conn,
                                       virDomainPtr dom,
                                       int reason,
                                       void *opaque);

"reason" is unused currently, always passes "0".
2012-03-23 23:12:14 +08:00
Osier Yang
a26a1969c3 Add support for event tray moved of removable disks
This patch introduces a new event type for the QMP event
DEVICE_TRAY_MOVED, which occurs when the tray of a removable
disk is moved (i.e opened or closed):

    VIR_DOMAIN_EVENT_ID_TRAY_CHANGE

The event's data includes the device alias and the reason
for tray status' changing, which indicates why the tray
status was changed. Thus the callback definition for the event
is:

enum {
    VIR_DOMAIN_EVENT_TRAY_CHANGE_OPEN = 0,
    VIR_DOMAIN_EVENT_TRAY_CHANGE_CLOSE,

\#ifdef VIR_ENUM_SENTINELS
    VIR_DOMAIN_EVENT_TRAY_CHANGE_LAST
\#endif
} virDomainEventTrayChangeReason;

typedef void
(*virConnectDomainEventTrayChangeCallback)(virConnectPtr conn,
                                           virDomainPtr dom,
                                           const char *devAlias,
                                           int reason,
                                           void *opaque);
2012-03-23 23:10:26 +08:00
Michal Privoznik
baf2ff7e90 startupPolicy: Emit event on disk source dropping
If a disk source gets dropped because it is not accessible,
mgmt application might want to be informed about this. Therefore
we need to emit an event. The event presented in this patch
is however a bit superset of what written above. The reason is simple:
an intention to be easily expanded, e.g. on 'user ejected disk
in guest' events. Therefore, callback gets source string and disk alias
(which should be unique among a domain) and reason (an integer);
2011-10-25 09:27:10 +02:00
Adam Litke
d489b04628 Asynchronous event for BlockJob completion
When an operation started by virDomainBlockPull completes (either with
success or with failure), raise an event to indicate the final status.
This API allow users to avoid polling on virDomainGetBlockJobInfo if
they would prefer to use an event mechanism.

* daemon/remote.c: Dispatch events to client
* include/libvirt/libvirt.h.in: Define event ID and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
  src/libvirt_private.syms: Extend API to handle the new event
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
  for block_stream completion and emit a libvirt block pull event
* src/remote/remote_driver.c: Receive and dispatch events to application
* src/remote/remote_protocol.x: Wire protocol definition for the event
* src/remote_protocol-structs: structure definitions for protocol verification
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
  src/qemu/qemu_monitor_json.c: Watch for BLOCK_STREAM_COMPLETED event
  from QEMU monitor
2011-07-22 13:57:42 +08:00
Eric Blake
c4c59e7228 Revert "Asynchronous event for BlockPull completion"
This reverts commit 12cd77a0c5.

Conflicts:

	python/libvirt-override-virConnect.py
	python/libvirt-override.c
	src/remote/remote_protocol.x
2011-06-24 08:41:24 -06:00
Cole Robinson
7268cb9274 python: Mark event callback wrappers as private
These functions aren't intended to be called directly by users, so mark
them as private.

While we're at it, remove unneeded exception handling, and break some
long lines.
2011-06-21 10:08:48 -04:00
Adam Litke
12cd77a0c5 Asynchronous event for BlockPull completion
When an operation started by virDomainBlockPullAll completes (either with
success or with failure), raise an event to indicate the final status.  This
allows an API user to avoid polling on virDomainBlockPullInfo if they would
prefer to use the event mechanism.

* daemon/remote.c: Dispatch events to client
* include/libvirt/libvirt.h.in: Define event ID and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
  src/libvirt_private.syms: Extend API to handle the new event
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
  for block_stream completion and emit a libvirt block pull event
* src/remote/remote_driver.c: Receive and dispatch events to application
* src/remote/remote_protocol.x: Wire protocol definition for the event
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
  src/qemu/qemu_monitor_json.c: Watch for BLOCK_STREAM_COMPLETED event
  from QEMU monitor

Signed-off-by: Adam Litke <agl@us.ibm.com>
2011-06-14 22:48:42 -06:00
Philipp Hahn
eac63161cc Fix SEGV on exit after domainEventDeregister()
When the last callback is removed using domainEventDeregister(), the
events dispatcher is deregistered from the C-library, but
domainEventsCallbacks is still an empty list.
On shutdown __del__() deregisters the dispatacher again, which SEGVs

	# You need the event-loop implementation from the Python examples;
	# give the file a name which is importable by Python.
	ln examples/domain-events/events-python/event-test.py eloop.py
	python -c 'from eloop import *
	import sys

	def dump(*args): print " ".join(map(str, args))

	virEventLoopPureStart()
	c = libvirt.open("xen:///")
	c.domainEventRegister(dump, None)
	c.domainEventDeregister(dump)
	sys.exit(0)'

domainEventDeregister() needs to delete domainEventCallbacks so subsequent
calls to __del__() and domainEventRegister() choose the right code paths.
Setting it to None is not enough, since calling domainEventRegiser() again
would trigger an TypeError.

Signed-off-by: Philipp Hahn <hahn@univention.de>
2010-07-23 13:26:40 -06:00
Daniel P. Berrange
a6c539445e Ensure we return the callback ID in python events binding
A missing return statement in the python binding meant that
the callers could not get the callback ID, and thus not be
able to unregister event callbacks

* python/libvirt-override-virConnect.py: Add missing return
  statement
2010-07-12 13:41:52 +01:00
Daniel P. Berrange
a711633909 Add missing parameter in python Disk IO error callback
The IO error callback was forgetting to pass the action
parameter, causing a stack trace when IO errors arrive

* python/libvirt-override-virConnect.py: Add missing action
  parameter in IO error callback
2010-06-25 14:39:37 +01:00
Daniel P. Berrange
34dcbbb470 Add support for another explicit IO error event
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
2010-04-30 15:52:59 +01:00
Daniel P. Berrange
631c4ce855 More event callback fixes
In a couple of cases typos meant we were firing the wrong type
of event. In the python code my previous commit accidentally
missed some chunks of the code.

* python/libvirt-override-virConnect.py: Add missing python glue
  accidentally left out of previous commit
* src/conf/domain_event.c, src/qemu/qemu_monitor_json.c: Fix typos
  in event name / method name to invoke
2010-04-09 16:24:28 +01:00
Daniel P. Berrange
6df7d55d39 Fix up python bindings for new event callbacks
The generator was disabled for the new event callbacks, since they
need to be hand written. This patch  adds the C and python glue to
expose the new APIs in the python binding. The python example
program is extended to demonstrate of the code

* python/libvirt-override.c: Registration and dispatch of events
   at the C layer
* python/libvirt-override-virConnect.py: Python glue for events
* examples/domain-events/events-python/event-test.py: Demo use
  of new event callbacks
2010-04-08 12:41:40 +01:00
Daniel P. Berrange
f991a00653 Re-arrange python generator to make it clear what's auto-generated
* README: New file describing what each file is used for
* livvirt-override.c, libvirt-override.py, libvirt-override-api.xml,
  libvirt-override-virConnect.py: Manually written code overriding
  the generator
* typewrappers.c, typewrappers.h: Data type wrappers
* generator.py: Automatically pre-prend contents of libvirt-override.py
  to generated libvirt.py. Output into libvirt.py directly instead of
  libvirtclass.py. Don't generate libvirtclass.txt at all. Write C
  files into libvirt.c/.h directly
* Makefile.am: Remove rule for creating libvirt.py from libvirt-override.py
  and libvirtclass.py, since generator.py does it directly
2009-09-21 14:41:46 +01:00