8:35 a.m.
Closer to pep8
Signed-off-by: Philipp Hahn <hahn(a)univention.de>
---
examples/event-test.py | 97 ++++++++++++++++++++++++++++++++++++--------------
1 file changed, 71 insertions(+), 26 deletions(-)
diff --git a/examples/event-test.py b/examples/event-test.py
index 1e94838..540bf9b 100755
--- a/examples/event-test.py
+++ b/examples/event-test.py
@@ -30,11 +30,14 @@ import threading
event_impl = "poll"
do_debug = False
+
+
def debug(msg):
global do_debug
if do_debug:
print(msg)
+
#
# This general purpose event loop will support waiting for file handle
# I/O and errors events, as well as scheduling repeatable timers with
@@ -100,7 +103,6 @@ class virEventLoopPoll:
self.cb(self.timer,
self.opaque)
-
def __init__(self):
self.poll = select.poll()
self.pipetrick = os.pipe()
@@ -126,10 +128,9 @@ class virEventLoopPoll:
# with the event loop for input events. When we need to force
# the main thread out of a poll() sleep, we simple write a
# single byte of data to the other end of the pipe.
- debug("Self pipe watch %d write %d" %(self.pipetrick[0],
self.pipetrick[1]))
+ debug("Self pipe watch %d write %d" % (self.pipetrick[0],
self.pipetrick[1]))
self.poll.register(self.pipetrick[0], select.POLLIN)
-
# Calculate when the next timeout is due to occur, returning
# the absolute timestamp for the next timeout, or 0 if there is
# no timeout due
@@ -159,7 +160,6 @@ class virEventLoopPoll:
return h
return None
-
# This is the heart of the event loop, performing one single
# iteration. It asks when the next timeout is due, and then
# calculates the maximum amount of time it is able to sleep
@@ -235,7 +235,6 @@ class virEventLoopPoll:
finally:
self.runningPoll = False
-
# Actually run the event loop forever
def run_loop(self):
self.quit = False
@@ -247,7 +246,6 @@ class virEventLoopPoll:
self.pendingWakeup = True
os.write(self.pipetrick[1], 'c'.encode("UTF-8"))
-
# Registers a new file handle 'fd', monitoring for 'events'
(libvirt
# event constants), firing the callback cb() when an event occurs.
# Returns a unique integer identier for this handle, that should be
@@ -301,7 +299,7 @@ class virEventLoopPoll:
h.set_interval(interval)
self.interrupt()
- debug("Update timer %d interval %d" % (timerID, interval))
+ debug("Update timer %d interval %d" % (timerID, interval))
break
# Stop monitoring for events on the file handle
@@ -383,26 +381,32 @@ def virEventAddHandleImpl(fd, events, cb, opaque):
global eventLoop
return eventLoop.add_handle(fd, events, cb, opaque)
+
def virEventUpdateHandleImpl(handleID, events):
global eventLoop
return eventLoop.update_handle(handleID, events)
+
def virEventRemoveHandleImpl(handleID):
global eventLoop
return eventLoop.remove_handle(handleID)
+
def virEventAddTimerImpl(interval, cb, opaque):
global eventLoop
return eventLoop.add_timer(interval, cb, opaque)
+
def virEventUpdateTimerImpl(timerID, interval):
global eventLoop
return eventLoop.update_timer(timerID, interval)
+
def virEventRemoveTimerImpl(timerID):
global eventLoop
return eventLoop.remove_timer(timerID)
+
# This tells libvirt what event loop implementation it
# should use
def virEventLoopPollRegister():
@@ -413,20 +417,24 @@ def virEventLoopPollRegister():
virEventUpdateTimerImpl,
virEventRemoveTimerImpl)
+
# Directly run the event loop in the current thread
def virEventLoopPollRun():
global eventLoop
eventLoop.run_loop()
+
def virEventLoopAIORun(loop):
import asyncio
asyncio.set_event_loop(loop)
loop.run_forever()
+
def virEventLoopNativeRun():
while True:
libvirt.virEventRunDefaultImpl()
+
# Spawn a background thread to run the event loop
def virEventLoopPollStart():
global eventLoopThread
@@ -435,6 +443,7 @@ def virEventLoopPollStart():
eventLoopThread.setDaemon(True)
eventLoopThread.start()
+
def virEventLoopAIOStart():
global eventLoopThread
import libvirtaio
@@ -445,6 +454,7 @@ def virEventLoopAIOStart():
eventLoopThread.setDaemon(True)
eventLoopThread.start()
+
def virEventLoopNativeStart():
global eventLoopThread
libvirt.virEventRegisterDefaultImpl()
@@ -509,10 +519,13 @@ def myDomainEventCallback(conn, dom, event, detail, opaque):
def myDomainEventRebootCallback(conn, dom, opaque):
- print("myDomainEventRebootCallback: Domain %s(%s)" % (dom.name(),
dom.ID()))
+ print("myDomainEventRebootCallback: Domain %s(%s)" % (
+ dom.name(), dom.ID()))
+
def myDomainEventRTCChangeCallback(conn, dom, utcoffset, opaque):
- print("myDomainEventRTCChangeCallback: Domain %s(%s) %d" % (dom.name(),
dom.ID(), utcoffset))
+ print("myDomainEventRTCChangeCallback: Domain %s(%s) %d" % (
+ dom.name(), dom.ID(), utcoffset))
def myDomainEventWatchdogCallback(conn, dom, action, opaque):
@@ -521,7 +534,8 @@ def myDomainEventWatchdogCallback(conn, dom, action, opaque):
def myDomainEventIOErrorCallback(conn, dom, srcpath, devalias, action, opaque):
- print("myDomainEventIOErrorCallback: Domain %s(%s) %s %s %d" % (dom.name(),
dom.ID(), srcpath, devalias, action))
+ print("myDomainEventIOErrorCallback: Domain %s(%s) %s %s %d" % (
+ dom.name(), dom.ID(), srcpath, devalias, action))
def myDomainEventIOErrorReasonCallback(conn, dom, srcpath, devalias, action, reason,
opaque):
@@ -535,7 +549,8 @@ def myDomainEventGraphicsCallback(conn, dom, phase, localAddr,
remoteAddr, authS
def myDomainEventControlErrorCallback(conn, dom, opaque):
- print("myDomainEventControlErrorCallback: Domain %s(%s)" % (dom.name(),
dom.ID()))
+ print("myDomainEventControlErrorCallback: Domain %s(%s)" % (
+ dom.name(), dom.ID()))
def myDomainEventBlockJobCallback(conn, dom, disk, type, status, opaque):
@@ -555,18 +570,27 @@ def myDomainEventTrayChangeCallback(conn, dom, devAlias, reason,
opaque):
def myDomainEventPMWakeupCallback(conn, dom, reason, opaque):
print("myDomainEventPMWakeupCallback: Domain %s(%s) system pmwakeup" % (
- dom.name(), dom.ID()))
+ dom.name(), dom.ID()))
+
+
def myDomainEventPMSuspendCallback(conn, dom, reason, opaque):
print("myDomainEventPMSuspendCallback: Domain %s(%s) system pmsuspend" % (
- dom.name(), dom.ID()))
+ dom.name(), dom.ID()))
+
+
def myDomainEventBalloonChangeCallback(conn, dom, actual, opaque):
- print("myDomainEventBalloonChangeCallback: Domain %s(%s) %d" % (dom.name(),
dom.ID(), actual))
+ print("myDomainEventBalloonChangeCallback: Domain %s(%s) %d" % (
+ dom.name(), dom.ID(), actual))
+
+
def myDomainEventPMSuspendDiskCallback(conn, dom, reason, opaque):
print("myDomainEventPMSuspendDiskCallback: Domain %s(%s) system
pmsuspend_disk" % (
- dom.name(), dom.ID()))
+ dom.name(), dom.ID()))
+
+
def myDomainEventDeviceRemovedCallback(conn, dom, dev, opaque):
print("myDomainEventDeviceRemovedCallback: Domain %s(%s) device removed:
%s" % (
- dom.name(), dom.ID(), dev))
+ dom.name(), dom.ID(), dev))
def myDomainEventBlockJob2Callback(conn, dom, disk, type, status, opaque):
@@ -575,7 +599,8 @@ def myDomainEventBlockJob2Callback(conn, dom, disk, type, status,
opaque):
def myDomainEventTunableCallback(conn, dom, params, opaque):
- print("myDomainEventTunableCallback: Domain %s(%s) %s" % (dom.name(),
dom.ID(), params))
+ print("myDomainEventTunableCallback: Domain %s(%s) %s" % (
+ dom.name(), dom.ID(), params))
def myDomainEventAgentLifecycleCallback(conn, dom, state, reason, opaque):
@@ -585,21 +610,33 @@ def myDomainEventAgentLifecycleCallback(conn, dom, state, reason,
opaque):
def myDomainEventDeviceAddedCallback(conn, dom, dev, opaque):
print("myDomainEventDeviceAddedCallback: Domain %s(%s) device added: %s" %
(
- dom.name(), dom.ID(), dev))
+ dom.name(), dom.ID(), dev))
+
+
def myDomainEventMigrationIteration(conn, dom, iteration, opaque):
print("myDomainEventMigrationIteration: Domain %s(%s) started migration
iteration %d" % (
- dom.name(), dom.ID(), iteration))
+ dom.name(), dom.ID(), iteration))
+
+
def myDomainEventJobCompletedCallback(conn, dom, params, opaque):
- print("myDomainEventJobCompletedCallback: Domain %s(%s) %s" % (dom.name(),
dom.ID(), params))
+ print("myDomainEventJobCompletedCallback: Domain %s(%s) %s" % (
+ dom.name(), dom.ID(), params))
+
+
def myDomainEventDeviceRemovalFailedCallback(conn, dom, dev, opaque):
print("myDomainEventDeviceRemovalFailedCallback: Domain %s(%s) failed to remove
device: %s" % (
- dom.name(), dom.ID(), dev))
+ dom.name(), dom.ID(), dev))
+
+
def myDomainEventMetadataChangeCallback(conn, dom, mtype, nsuri, opaque):
print("myDomainEventMetadataChangeCallback: Domain %s(%s) changed metadata
mtype=%d nsuri=%s" % (
- dom.name(), dom.ID(), mtype, nsuri))
+ dom.name(), dom.ID(), mtype, nsuri))
+
+
def myDomainEventBlockThresholdCallback(conn, dom, dev, path, threshold, excess,
opaque):
print("myDomainEventBlockThresholdCallback: Domain %s(%s) block device %s(%s)
threshold %d exceeded by %d" % (
- dom.name(), dom.ID(), dev, path, threshold, excess))
+ dom.name(), dom.ID(), dev, path, threshold, excess))
+
##########################################################################
# Network events
@@ -638,6 +675,7 @@ def myStoragePoolEventLifecycleCallback(conn, pool, event, detail,
opaque):
def myStoragePoolEventRefreshCallback(conn, pool, opaque):
print("myStoragePoolEventRefreshCallback: Storage pool %s" % pool.name())
+
##########################################################################
# Node device events
##########################################################################
@@ -655,6 +693,7 @@ def myNodeDeviceEventLifecycleCallback(conn, dev, event, detail,
opaque):
def myNodeDeviceEventUpdateCallback(conn, dev, opaque):
print("myNodeDeviceEventUpdateCallback: Node device %s" % dev.name())
+
##########################################################################
# Secret events
##########################################################################
@@ -672,6 +711,7 @@ def mySecretEventLifecycleCallback(conn, secret, event, detail,
opaque):
def mySecretEventValueChanged(conn, secret, opaque):
print("mySecretEventValueChanged: Secret %s" % secret.UUIDString())
+
##########################################################################
# Set up and run the program
##########################################################################
@@ -695,12 +735,13 @@ def usage():
print(" --loop=TYPE, -l Choose event-loop-implementation (native, poll,
asyncio)")
print(" --timeout=SECS Quit after SECS seconds running")
+
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "hdl:", ["help",
"debug", "loop=", "timeout="])
except getopt.GetoptError as err:
# print help information and exit:
- print(str(err)) # will print something like "option -a not recognized"
+ print(str(err)) # will print something like "option -a not
recognized"
usage()
sys.exit(2)
timeout = None
@@ -736,16 +777,19 @@ def main():
# Close connection on exit (to test cleanup paths)
old_exitfunc = getattr(sys, 'exitfunc', None)
+
def exit():
print("Closing " + vc.getURI())
if run:
vc.close()
- if (old_exitfunc): old_exitfunc()
+ if (old_exitfunc):
+ old_exitfunc()
+
sys.exitfunc = exit
vc.registerCloseCallback(myConnectionCloseCallback, None)
- #Add 2 lifecycle callbacks to prove this works with more than just one
+ # Add 2 lifecycle callbacks to prove this works with more than just one
vc.domainEventRegister(myDomainEventCallback, 1)
domcallbacks = [
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_LIFECYCLE,
myDomainEventCallback, 2),
@@ -829,5 +873,6 @@ def main():
# Allow delayed event loop cleanup to run, just for sake of testing
time.sleep(2)
+
if __name__ == "__main__":
main()
--
2.11.0