def cancelOperation(self):
"""Requests the current operation stops as soon as possible"""
self.logger.logmsg('INFO', _('Canceling the current operation!'))
if self.pids:
for process in self.pids:
try:
self.logger.logmsg('DEBUG', _('Stopping process with ID %s') % process)
fwbackups.kill(process, 9)
except Exception, error:
self.logger.logmsg('WARNING', _('Could not stop process %(a)s: %(b)s' % (process, error)))
continue
def write(crontabEntries=[]):
"""Write a crontab-formatted file from the list of fstabLines. Return values
of 0 or 1 to indicate a failure writing to the crontab or a success
respectively."""
if LINUX:
environ = {'EDITOR': 'python %s/cronwriter.py' % INSTALL_DIR,
'VISUAL': 'python %s/cronwriter.py' % INSTALL_DIR}
elif DARWIN:
environ = {'EDITOR': '/fwbackups-cronwriter.py',
'VISUAL': '/fwbackups-cronwriter.py'}
else:
environ = {}
remove()
try:
if MSWINDOWS:
crontab = getPyCrontab()
fh = open(crontab, 'w')
else:
if DARWIN:
if os.path.islink('/fwbackups-cronwriter.py'):
os.remove('/fwbackups-cronwriter.py')
os.symlink(os.path.join(encode(INSTALL_DIR), 'cronwriter.py'), '/fwbackups-cronwriter.py')
sub = executeSub(['crontab', '-e'], environ, stdoutfd=subprocess.PIPE)
fh = sub.stdin
# Write the content to the crontab
for crontabEntry in crontabEntries:
if isinstance(crontabEntry, crontabLine): # generate the entry text
fh.write(encode(crontabEntry.generate_entry_text()))
else:
fh.write(encode(crontabEntry.get_raw_entry_text()))
time.sleep(1)
fh.close()
if not MSWINDOWS:
counter = 0.0
while sub.poll() in [None, ""] and counter < 5.0: # After waiting for 5 seconds, assume that the crontab could not be installed
time.sleep(0.1)
counter += 0.1
if sub.poll() in [None, ""]:
# Soft-terminate the process if it still hasn't finished
kill(sub.pid, 15)
sub.wait()
raise ValidationError(_("The crontab could not be saved"))
if DARWIN:
os.remove('/fwbackups-cronwriter.py')
if sub.poll() != os.EX_OK:
stdout = ' '.join(sub.stdout.readlines())
stderr = ' '.join(sub.stderr.readlines())
raise CronError(_('Could not write new crontab:\n%(a)s%(b)s') % {'a': stdout, 'b': stderr})
fh.close()
except IOError: # can't open crontab file
return 0
return 1
