def isConnectionOn():
retcode, output = callExt('ping -c 1 goole.com')
if retcode == 0:
return True
for i in range(2):
sleep(3)
retcode, output = callExt('ping -c 1 goole.com')
if retcode == 0:
return True
return False
def isConnectionOn():
retcode, output = callExt('ping -c 1 goole.com')
if retcode == 0:
return True
for i in range(2):
sleep(3)
retcode, output = callExt('ping -c 1 goole.com')
if retcode == 0:
return True
return False
def shutdown(minutes_to_delay):
shutdownCmd = 'shutdown -h +%d' % (minutes_to_delay)
retcode, output = callExt(shutdownCmd)
if len(output) > 0:
#print the output of the external command
for outLine in output.splitlines():
logAppend("callExt: {0}".format(outLine))
def suspend(suspendToMemory, waitSeconds, onResume=None):
if waitSeconds <= 0:
return
sync_with_cloud(300)
#syncDiskWithMemory()
suspendStartTime = time()
if suspendToMemory:
suspendCmd = 'rtcwake -l -m mem -s %d' % (waitSeconds)
if onResume is not None:
suspendCmd = '{0} && {1}'.format(suspendCmd, onResume)
try:
retcode, output = callExt(suspendCmd)
if len(output) > 0:
#print the output of the external command
for outLine in output.splitlines():
logAppend("callExt: {0}".format(outLine))
if retcode < 0:
raise SuspendError("rtc", "suspend: rtcwake was terminated by signal {0}".format(-retcode))
if retcode > 0:
raise SuspendError("rtc", "suspend: rtcwake returned error code {0}".format(retcode))
except ShellError as e:
raise SuspendError("OSError", "suspend: rtcwake execution failed: {0}".format(e))
else:
sleep(waitSeconds)
# Resume from suspend
if time() - suspendStartTime < waitSeconds:
# Resume from suspend was not caused by the rtc, such as power button or keyboard
return False
return True
def syncDiskWithMemory():
print 'Sync Disk With Memory'
try:
retcode, output = callExt('sync')
if len(output) > 0:
#print the output of the external command
for outLine in output.splitlines():
logAppend("sync: {0}".format(outLine))
if retcode < 0:
raise SuspendError("sync", "sync was terminated with failure code {0}".format(-retcode))
except ShellError as e:
raise SuspendError("OSError", "sync execution failed: {0}".format(e))
def check_and_reset_network_connection():
'''Require DNS servers setting.
See: http://askubuntu.com/a/465759 '''
print 'Check network connection'
if not isConnectionOn():
logAppend('network:reset connection')
# Require root permissions
# See: http://ubuntuforums.org/showthread.php?t=1829796
retcode, output = callExt('service network-manager restart')
if len(output) > 0:
#print the output of the external command
for outLine in output.splitlines():
logAppend("{0}".format(outLine))
if not isConnectionOn():
# The connection is lost
# raise CloudError("network", "ping error")
logAppend('network:ping error')
def check_and_reset_network_connection():
'''Require DNS servers setting.
See: http://askubuntu.com/a/465759 '''
print 'Check network connection'
if not isConnectionOn():
logAppend('network:reset connection')
# Require root permissions
# See: http://ubuntuforums.org/showthread.php?t=1829796
retcode, output = callExt('service network-manager restart')
if len(output) > 0:
#print the output of the external command
for outLine in output.splitlines():
logAppend("{0}".format(outLine))
if not isConnectionOn():
# The connection is lost
# raise CloudError("network", "ping error")
logAppend('network:ping error')
def screenPowerSave(on):
if on:
callExt('vbetool dpms off')
else:
callExt('vbetool dpms on')