def close(self):
"""
Closes the inotify instance and removes all associated watches.
"""
with self._lock:
path = unicode_paths.encode(absolute_path(self._path))
wd = self._wd_for_path[path]
inotify_rm_watch(self._inotify_fd, wd)
def close(self):
"""
Closes the inotify instance and removes all associated watches.
"""
with self._lock:
path = unicode_paths.encode(absolute_path(self._path))
wd = self._wd_for_path[path]
inotify_rm_watch(self._inotify_fd, wd)
def _add_watch(self, path, mask):
"""
Adds a watch for the given path to monitor events specified by the
mask.
:param path:
Path to monitor
:param mask:
Event bit mask.
"""
wd = inotify_add_watch(self._inotify_fd, unicode_paths.encode(path), mask)
if wd == -1:
Inotify._raise_error()
self._wd_for_path[path] = wd
self._path_for_wd[wd] = path
return wd
def _add_watch(self, path, mask):
"""
Adds a watch for the given path to monitor events specified by the
mask.
:param path:
Path to monitor
:param mask:
Event bit mask.
"""
wd = inotify_add_watch(self._inotify_fd, unicode_paths.encode(path), mask)
if wd == -1:
Inotify._raise_error()
self._wd_for_path[path] = wd
self._path_for_wd[wd] = path
return wd
def _add_dir_watch(self, path, recursive, mask):
"""
Adds a watch (optionally recursively) for the given directory path
to monitor events specified by the mask.
:param path:
Path to monitor
:param recursive:
``True`` to monitor recursively.
:param mask:
Event bit mask.
"""
path = unicode_paths.encode(path)
if not os.path.isdir(path):
raise OSError('Path is not a directory')
self._add_watch(path, mask)
if recursive:
for root, dirnames, _ in os.walk(path):
for dirname in dirnames:
full_path = absolute_path(os.path.join(root, dirname))
if os.path.islink(full_path):
continue
self._add_watch(full_path, mask)
def _add_dir_watch(self, path, recursive, mask):
"""
Adds a watch (optionally recursively) for the given directory path
to monitor events specified by the mask.
:param path:
Path to monitor
:param recursive:
``True`` to monitor recursively.
:param mask:
Event bit mask.
"""
path = unicode_paths.encode(path)
if not os.path.isdir(path):
raise OSError('Path is not a directory')
self._add_watch(path, mask)
if recursive:
for root, dirnames, _ in os.walk(path):
for dirname in dirnames:
full_path = absolute_path(os.path.join(root, dirname))
if os.path.islink(full_path):
continue
self._add_watch(full_path, mask)
def read_events(self, event_buffer_size=DEFAULT_EVENT_BUFFER_SIZE):
"""
Reads events from inotify and yields them.
"""
while True:
try:
event_buffer = os.read(self._inotify_fd, event_buffer_size)
except OSError as e:
if e.errno == errno.EINTR:
continue
break
with self._lock:
event_list = []
for wd, mask, cookie, name in Inotify._parse_event_buffer(event_buffer):
if wd == -1:
continue
wd_path = unicode_paths.encode(self._path_for_wd[wd])
src_path = absolute_path(os.path.join(wd_path, name))
inotify_event = InotifyEvent(wd, mask, cookie, name, src_path)
if inotify_event.is_moved_from:
# check if next event if moved_to
# otherwise we might be remembering
# something that we will never need
# and the event will be lost
if idx < len(parsed_events) - 1 and\
parsed_events[idx+1][2] == cookie:
self.remember_move_from_event(inotify_event)
else:
inotify_event = InotifyEvent(wd, mask, -1, name,
src_path)
elif inotify_event.is_moved_to:
move_src_path = self.source_for_move(inotify_event)
if move_src_path in self._wd_for_path:
# update old path -> new path
moved_wd = self._wd_for_path[move_src_path]
del self._wd_for_path[move_src_path]
self._wd_for_path[inotify_event.src_path] = moved_wd
self._path_for_wd[moved_wd] = inotify_event.src_path
src_path = absolute_path(os.path.join(wd_path, name))
inotify_event = InotifyEvent(wd, mask, cookie, name, src_path)
if inotify_event.is_ignored:
# Clean up book-keeping for deleted watches.
self._remove_watch_bookkeeping(src_path)
continue
event_list.append(inotify_event)
if self.is_recursive and inotify_event.is_directory and inotify_event.is_create:
# HACK: We need to traverse the directory path
# recursively and simulate events for newly
# created subdirectories/files. This will handle
# mkdir -p foobar/blah/bar; touch foobar/afile
# TODO: When a directory from another part of the
# filesystem is moved into a watched directory, this
# will not generate events for the directory tree.
# We need to coalesce IN_MOVED_TO events and those
# IN_MOVED_TO events which don't pair up with
# IN_MOVED_FROM events should be marked IN_CREATE
# instead relative to this directory.
try:
self._add_watch(src_path, self._event_mask)
except OSError:
continue
for root, dirnames, filenames in os.walk(src_path):
for dirname in dirnames:
try:
full_path = absolute_path(os.path.join(root, dirname))
wd_dir = self._add_watch(full_path, self._event_mask)
event_list.append(InotifyEvent(wd_dir,
InotifyConstants.IN_CREATE | InotifyConstants.IN_ISDIR, 0, dirname, full_path))
except OSError:
pass
for filename in filenames:
full_path = absolute_path(os.path.join(root, filename))
wd_parent_dir = self._wd_for_path[absolute_path(os.path.dirname(full_path))]
event_list.append(InotifyEvent(wd_parent_dir,
InotifyConstants.IN_CREATE, 0, filename, full_path))
return event_list
def on_thread_start(self):
path = unicode_paths.encode(self.watch.path)
self._inotify = InotifyBuffer(path, self.watch.is_recursive)
def on_thread_start(self):
path = unicode_paths.encode(self.watch.path)
self._inotify = InotifyBuffer(path, self.watch.is_recursive)
def read_events(self, event_buffer_size=DEFAULT_EVENT_BUFFER_SIZE):
"""
Reads events from inotify and yields them.
"""
# HACK: We need to traverse the directory path
# recursively and simulate events for newly
# created subdirectories/files. This will handle
# mkdir -p foobar/blah/bar; touch foobar/afile
def _recursive_simulate(src_path):
events = []
for root, dirnames, filenames in os.walk(src_path):
for dirname in dirnames:
try:
full_path = absolute_path(os.path.join(root, dirname))
wd_dir = self._add_watch(full_path, self._event_mask)
e = InotifyEvent(
wd_dir, InotifyConstants.IN_CREATE
| InotifyConstants.IN_ISDIR, 0, dirname, full_path)
events.append(e)
except OSError:
pass
for filename in filenames:
full_path = absolute_path(os.path.join(root, filename))
wd_parent_dir = self._wd_for_path[absolute_path(
os.path.dirname(full_path))]
e = InotifyEvent(wd_parent_dir, InotifyConstants.IN_CREATE,
0, filename, full_path)
events.append(e)
return events
while True:
try:
event_buffer = os.read(self._inotify_fd, event_buffer_size)
except OSError as e:
if e.errno == errno.EINTR:
continue
break
with self._lock:
event_list = []
for wd, mask, cookie, name in Inotify._parse_event_buffer(
event_buffer):
if wd == -1:
continue
wd_path = unicode_paths.encode(self._path_for_wd[wd])
src_path = absolute_path(os.path.join(wd_path, name))
inotify_event = InotifyEvent(wd, mask, cookie, name, src_path)
if inotify_event.is_moved_from:
self.remember_move_from_event(inotify_event)
elif inotify_event.is_moved_to:
move_src_path = self.source_for_move(inotify_event)
if move_src_path in self._wd_for_path:
moved_wd = self._wd_for_path[move_src_path]
del self._wd_for_path[move_src_path]
self._wd_for_path[inotify_event.src_path] = moved_wd
self._path_for_wd[moved_wd] = inotify_event.src_path
src_path = absolute_path(os.path.join(wd_path, name))
inotify_event = InotifyEvent(wd, mask, cookie, name,
src_path)
if inotify_event.is_ignored:
# Clean up book-keeping for deleted watches.
self._remove_watch_bookkeeping(src_path)
continue
event_list.append(inotify_event)
if (self.is_recursive and inotify_event.is_directory
and inotify_event.is_create):
# TODO: When a directory from another part of the
# filesystem is moved into a watched directory, this
# will not generate events for the directory tree.
# We need to coalesce IN_MOVED_TO events and those
# IN_MOVED_TO events which don't pair up with
# IN_MOVED_FROM events should be marked IN_CREATE
# instead relative to this directory.
try:
self._add_watch(src_path, self._event_mask)
except OSError:
continue
event_list.extend(_recursive_simulate(src_path))
return event_list
def __init__(self, event_queue, watch, timeout=DEFAULT_EMITTER_TIMEOUT):
EventEmitter.__init__(self, event_queue, watch, timeout)
self._lock = threading.Lock()
self._inotify = InotifyBuffer(unicode_paths.encode(watch.path),
watch.is_recursive)
def __init__(self, event_queue, watch, timeout=DEFAULT_EMITTER_TIMEOUT):
EventEmitter.__init__(self, event_queue, watch, timeout)
self._lock = threading.Lock()
self._inotify = InotifyBuffer(unicode_paths.encode(watch.path),
watch.is_recursive)
def read_events(self, event_buffer_size = DEFAULT_EVENT_BUFFER_SIZE):
"""
Reads events from inotify and yields them.
"""
def _recursive_simulate(src_path):
events = []
for root, dirnames, filenames in os.walk(src_path):
for dirname in dirnames:
try:
full_path = absolute_path(os.path.join(root, dirname))
wd_dir = self._add_watch(full_path, self._event_mask)
e = InotifyEvent(wd_dir, InotifyConstants.IN_CREATE | InotifyConstants.IN_ISDIR, 0, dirname, full_path)
events.append(e)
except OSError:
pass
for filename in filenames:
full_path = absolute_path(os.path.join(root, filename))
wd_parent_dir = self._wd_for_path[absolute_path(os.path.dirname(full_path))]
e = InotifyEvent(wd_parent_dir, InotifyConstants.IN_CREATE, 0, filename, full_path)
events.append(e)
return events
while True:
try:
event_buffer = os.read(self._inotify_fd, event_buffer_size)
except OSError as e:
if e.errno == errno.EINTR:
continue
break
with self._lock:
event_list = []
for wd, mask, cookie, name in Inotify._parse_event_buffer(event_buffer):
if wd == -1:
continue
wd_path = unicode_paths.encode(self._path_for_wd[wd])
src_path = absolute_path(os.path.join(wd_path, name))
inotify_event = InotifyEvent(wd, mask, cookie, name, src_path)
if inotify_event.is_moved_from:
self.remember_move_from_event(inotify_event)
elif inotify_event.is_moved_to:
move_src_path = self.source_for_move(inotify_event)
if move_src_path in self._wd_for_path:
moved_wd = self._wd_for_path[move_src_path]
del self._wd_for_path[move_src_path]
self._wd_for_path[inotify_event.src_path] = moved_wd
self._path_for_wd[moved_wd] = inotify_event.src_path
src_path = absolute_path(os.path.join(wd_path, name))
inotify_event = InotifyEvent(wd, mask, cookie, name, src_path)
if inotify_event.is_ignored:
self._remove_watch_bookkeeping(src_path)
continue
event_list.append(inotify_event)
if self.is_recursive and inotify_event.is_directory and inotify_event.is_create:
try:
self._add_watch(src_path, self._event_mask)
except OSError:
continue
event_list.extend(_recursive_simulate(src_path))
return event_list
