def _set_ref_count(self, new_value):
"""Set a new value to ref_count."""
logger.debug("ref_count is %r, changing value to %r.", self._ref_count, new_value)
if new_value < 0:
self._ref_count = 0
msg = "Attempting to decrease ref_count to a negative value (%r)."
logger.warning(msg, new_value)
else:
self._ref_count = new_value
if self._ref_count == 0:
logger.debug("Setting up timer with %r (%r, %r).", self.timeout_func, TIMEOUT_INTERVAL, self.shutdown)
self.timeout_func(TIMEOUT_INTERVAL, self.shutdown)
def __call__(self, *args, **kwargs):
"""Call this instance."""
app_name = args[0] if len(args) > 0 else None
logger.debug('Handling signal_name: %r, app_name: %r.',
self.signal_name, app_name)
if app_name != APP_NAME:
# This fixed bug #818190: filter signals not related to APP_NAME
logger.info('Received %r but app_name %r does not match %r, ' \
'exiting.', self.signal_name, app_name, APP_NAME)
return
if self.callback is not None:
# drop the app name, callers do not care about it
args = args[1:]
logger.debug('Calling %r with %d args and %d kwargs.',
self.callback, len(args), len(kwargs))
return self.callback(*args, **kwargs)
def _signal_handler(self, *args, **kwargs):
"""Generic signal handler."""
member = kwargs.get("member", None)
app_name = args[0] if len(args) > 0 else None
logger.debug("Handling DBus signal for member: %r, app_name: %r.", member, app_name)
if app_name != APP_NAME:
logger.info("Received %r but app_name %r does not match %r, " "exiting.", member, app_name, APP_NAME)
return
sig = getattr(self, member)
if member in ("CredentialsFound", "CredentialsError"):
# this are the only signals that will forward the parameter
logger.info("%r", member)
arg = args[1]
sig(arg)
else:
sig()
def shutdown(self):
"""If no ongoing requests, call self.shutdown_func."""
logger.debug("shutdown!, ref_count is %r.", self._ref_count)
if self._ref_count == 0:
logger.info("Shutting down, calling %r.", self.shutdown_func)
self.shutdown_func()
