def tail(file, manager, tail=False):
#notifier = inotify.adapters.Inotify()
while True:
try:
# File might not be present on rotation or to be created
if not os.path.exists(file):
warn('File {} does not exist.'.format(file))
time.sleep(1)
continue
#notifier.add_watch(logfile)
with opened_w_error(file, "r") as (f, err):
if err:
error("IOError: + {}".format(err))
else:
if tail:
f.seek(0, 2)
tail = False
for line in f.readlines():
# Sends the message to all registered plugs
manager.send_to_plugs(parse_line(line))
#except inotify.calls.InotifyError:
# sleep(1)
# Avoid errors on interrupt
except (KeyboardInterrupt, SystemExit):
manager.stop_plugins()
break
def _get(self):
"""
Read data from the file.
"""
with self.__class__._Locks[self.id]:
try:
with opened_w_error(self._infos_path(), "r") as f:
return json.load(f)
except IOError as e:
raise ObjectNotFound(data_object=self, message="Can't open the file", original_message=e)
except ValueError as e:
raise ObjectMalformed(data_object=self, message="Invalid Json Document", original_message=e)
def update(self):
self._check_valid_dict()
"""Save the new data in the data file"""
with self.__class__._Locks[self.id]:
try:
with opened_w_error(self._infos_path(), "w") as f:
# The id information is already stored in the file path.
d = {k: value for k, value in self.infos.items() if k != "id"}
json.dump(d, f, indent=4)
except IOError as e:
raise ObjectNotFound(data_object=self, message="Can't save data.", original_message=e)
except (ValueError, TypeError) as e:
raise ObjectMalformed(data_object=self, message="Can't serialize data.", original_message=e)
# Also update the cache of self.__get
self._get.__func__.cache[(self,)] = self.infos
