def run(self):
"""Run the watcher"""
# TODO: wait on condition/event when dir list is empty
# instead of looping per frequency interval.
while self._continue:
deleted = list()
added = list()
modified = list()
# Suspend processing if requested
if self._suspend:
with self._suspendcond:
self._suspendcond.wait()
with self._lock:
for dobj in self._dirs:
if not self._continue:
return
# Check if a watched directory has been deleted
if not os.path.exists(dobj.Path):
deleted.append(dobj)
self._dirs.remove(dobj)
continue
snapshot = fileutil.GetDirectoryObject(dobj.Path,
False, True)
# Check for deletions
for tobj in dobj.Files:
if not self._continue:
return
if tobj not in snapshot.Files:
deleted.append(tobj)
dobj.Files.remove(tobj)
# Check for additions and modifications
for tobj in snapshot.Files:
if not self._continue:
return
if tobj not in dobj.Files:
# new object was added
added.append(tobj)
dobj.Files.append(tobj)
else:
idx = dobj.Files.index(tobj)
existing = dobj.Files[idx]
# object was modified
if existing.ModTime < tobj.ModTime:
modified.append(tobj)
existing.ModTime = tobj.ModTime
# Call Notifier if anything changed
if any((added, deleted, modified)):
self._notifier(added, deleted, modified)
# Wait till next check
time.sleep(self._freq / 1000.0)
def AddWatchDirectory(self, dpath):
"""Add a directory to the watch list
@param dpath: directory path (unicode)
"""
assert os.path.isdir(dpath)
dobj = fileutil.Directory(dpath)
with self._lock:
if dobj not in self._dirs:
# Get current snapshot of the directory
dobj = fileutil.GetDirectoryObject(dpath, False, True)
self._dirs.append(dobj)
def AddWatchDirectory(self, dpath):
"""Add a directory to the watch list
@param dpath: directory path (unicode)
@return: bool - True means watch was added, False means unable to list directory
"""
assert os.path.isdir(dpath)
dobj = fileutil.Directory(dpath)
self._changePending = True
with self._lock:
if dobj not in self._dirs and os.access(dobj.Path, os.R_OK):
# Get current snapshot of the directory
try:
dobj = fileutil.GetDirectoryObject(dpath, False, True)
except OSError:
self._changePending = False
return False
self._dirs.append(dobj)
with self._listEmptyCond:
self._listEmptyCond.notify()
self._changePending = False
return True
def run(self):
"""Run the watcher"""
while self._continue:
deleted = list()
added = list()
modified = list()
# Watch is empty so wait on things to monitor before continuing
if not self._dirs:
with self._listEmptyCond:
self._listEmptyCond.wait()
# Suspend processing if requested
if self._suspend:
with self._suspendcond:
self._suspendcond.wait()
with self._lock:
for dobj in self._PendingRefresh:
if not self._continue:
return
elif self._changePending:
break
# Check if a watched directory has been deleted
if not os.path.exists(dobj.Path):
deleted.append(dobj)
self._dirs.remove(dobj)
continue
snapshot = fileutil.GetDirectoryObject(
dobj.Path, False, True)
# Check for deletions
dobjFiles = dobj.Files # optimization
dobjIndex = dobjFiles.index # optimization
snapFiles = snapshot.Files # optimization
for tobj in dobjFiles:
if not self._continue:
return
elif self._changePending:
break
if tobj not in snapFiles:
deleted.append(tobj)
dobjFiles.remove(tobj)
# Check for additions and modifications
for tobj in snapFiles:
if not self._continue:
return
elif self._changePending:
break
if tobj not in dobjFiles:
# new object was added
added.append(tobj)
dobjFiles.append(tobj)
else:
idx = dobjIndex(tobj)
existing = dobjFiles[idx]
# object was modified
if existing.ModTime < tobj.ModTime:
modified.append(tobj)
existing.ModTime = tobj.ModTime
# Call Notifier if anything changed
if any((added, deleted, modified)):
self._notifier(added, deleted, modified)
# Wait till next check
if self._freq > 0:
# Automatic updates
time.sleep(self._freq / 1000.0)
else:
# Manually controlled updates
with self._refreshCond:
self._refreshDirs = None
self._refreshCond.wait()