def process_events(self, action, file_name, cookie, syncdaemon_path):
"""Process the events from the queue."""
# do not process events when the watch was stopped
if not self.platform_watch.watching:
return
# do not process those events that should be ignored
if any([file_name.startswith(path)
for path in self.ignore_paths]):
return
# map the filesystem events to the pyinotify ones, tis is dirty but
# makes the multiplatform better, linux was first :P
full_dir_path = os.path.join(self.path, file_name)
is_dir = self._path_is_dir(full_dir_path)
if is_dir:
# we need to update the list of subdirs that we have
self._update_subdirs(full_dir_path, action)
mask = ACTIONS[action]
head, tail = os.path.split(file_name)
if is_dir:
mask |= IN_ISDIR
event_raw_data = {
'wd': self._descriptor,
'dir': is_dir,
'mask': mask,
'name': tail,
'path': '.'}
# by the way in which the api fires the events we know for
# sure that no move events will be added in the wrong order, this
# is kind of hacky, I dont like it too much
if ACTIONS[action] == IN_MOVED_FROM:
self._cookie = cookie
self._source_pathname = tail
event_raw_data['cookie'] = self._cookie
if ACTIONS[action] == IN_MOVED_TO:
event_raw_data['src_pathname'] = self._source_pathname
event_raw_data['cookie'] = self._cookie
event = Event(event_raw_data)
# FIXME: event deduces the pathname wrong and we need to manually
# set it
event.pathname = syncdaemon_path
# add the event only if we do not have an exclude filter or
# the exclude filter returns False, that is, the event will not
# be excluded
self.log.debug('Pushing event %r to processor.', event)
self._processor(event)
def generate_from_event(self, event, cookie):
"""Return a fake from event from a rename one."""
source_path = get_syncdaemon_valid_path(event.event_paths[0])
mask = IN_MOVED_FROM
if event.is_directory:
mask |= IN_ISDIR
head, tail = os.path.split(source_path)
event_raw_data = {
'wd': 0, # we only have one factory
'dir': event.is_directory,
'mask': mask,
'name': tail,
'cookie': cookie,
'path': '.'}
move_from_event = Event(event_raw_data)
move_from_event.pathname = source_path
return move_from_event
def process_IN_MODIFY(self, event):
"""Capture a modify event and fake an open ^ close write events."""
# lets ignore dir changes
if event.dir:
return
# on someplatforms we just get IN_MODIFY, lets always fake
# an OPEN & CLOSE_WRITE couple
raw_open = raw_close = {
'wd': event.wd,
'dir': event.dir,
'name': event.name,
'path': event.path}
# caculate the open mask
raw_open['mask'] = IN_OPEN
# create the event using the raw data, then fix the pathname param
open_event = Event(raw_open)
open_event.pathname = event.pathname
# push the open
self.general_processor.push_event(open_event)
raw_close['mask'] = IN_CLOSE_WRITE
close_event = Event(raw_close)
close_event.pathname = event.pathname
# push the close event
self.general_processor.push_event(close_event)
def convert_in_pyinotify_event(self, event):
"""Get an event from the daemon and convert it in a pyinotify one."""
# the rename is a special type of event because it has to be either
# converted is a pair of events or in a single one (CREATE or DELETE)
if event.event_type == fseventsd.FSE_RENAME:
is_create = self.is_create(event)
is_delete = self.is_delete(event)
if is_create or is_delete:
mask = IN_CREATE if is_create else IN_DELETE
if event.is_directory:
mask |= IN_ISDIR
# a create means that we moved from a not watched path to a
# watched one and therefore we are interested in the SECOND
# path of the event. A delete means that we moved from a
# watched path for a not watched one and we care about the
# FIRST path of the event
path = (
event.event_paths[1] if is_create else event.event_paths[0]
)
path = get_syncdaemon_valid_path(path)
head, tail = os.path.split(path)
event_raw_data = {
'wd': 0, # we only have one factory
'dir': event.is_directory,
'mask': mask,
'name': tail,
'path': '.'}
orig_event = Event(event_raw_data)
orig_event.pathname = path
events = [orig_event]
if is_create:
mod_event = Event(event_raw_data)
mod_event.pathname = path
mod_event.mask = IN_MODIFY
if event.is_directory:
mod_event.mask |= IN_ISDIR
events.append(mod_event)
return events
else:
# we have a rename within watched paths, so let's
# generate two fake events
cookie = str(uuid4())
return [self.generate_from_event(event, cookie),
self.generate_to_event(event, cookie)]
else:
mask = DARWIN_ACTIONS[event.event_type]
if event.is_directory:
mask |= IN_ISDIR
# we do know that we are not dealing with a move which are the only
# events that have more than one path
path = get_syncdaemon_valid_path(event.event_paths[0])
head, tail = os.path.split(path)
event_raw_data = {
'wd': 0, # we only have one factory
'dir': event.is_directory,
'mask': mask,
'name': tail,
'path': '.'}
pyinotify_event = Event(event_raw_data)
# FIXME: event deduces the pathname wrong and we need to manually
# set it
pyinotify_event.pathname = path
return [pyinotify_event]
