def process_event(self, event):
if not self._config.has_key('replica_destination'):
# Bad config!
raise iPluginError("Missing replica_destination directive.")
return
if event.event_name == 'WATCH_INIT':
self._cache.push('mirror_config_' + self._watch.get_path(), self._config, True)
elif event.event_name == 'WATCH_RECONFIG':
# Configuration might have changed!
cached_config = self._cache.get('mirror_config_' + self._watch.get_path())
if cached_config['replica_destination'] != self._config['mirror_destination']:
# Our target has changed - reinit
self._cache.push('mirror_config_' + self._watch.get_path(), self._config, True)
self._init_mirror(event)
if self._events.has_key(event.event_name):
# Check if we have a delayed move event:
cached_event = self._cache.pop('mirror_'+self._watch.get_path())
if cached_event and event.event_name == 'IN_MOVED_TO' and event.cookie == cached_event.cookie:
# A matching MOVE event
self._finish_move(event, cached_event)
return
elif cached_event:
# Not a matching event - object should be deleted
self._delete(cached_event)
if self._events[event.event_name]:
self._events[event.event_name](event)
def _log(self, msg):
if not self._config.has_key('scribe_log'):
raise iPluginError("Missing scribe_log directive.")
return
if self._config['scribe_log'] != '-':
log_file = self._cache.pop('scribe_' + self._config['scribe_log'])
if not log_file:
try:
log_file = file(self._config['scribe_log'], 'a')
self._cache.push('scribe_' + self._config['scribe_log'], log_file, True)
except IOError, data:
raise iPluginError("Could not open log file '%s': %s" % (self._config['scribe_log'], data))
try:
print >>log_file, "%s " % datetime.datetime.now() + msg
except IOError, data:
raise iPluginError("Could not write to log file '%s': %s" % (self._config['scribe_log'], data))
def _finish_move(self, event, cached_event=None):
""" A matching MOVED_TO event received - do the move. """
try:
source = os.path.join(cached_event.path, cached_event.name)
source = self._form_destination(source)
destination = os.path.join(event.path, event.name)
destination = self._form_destination(destination)
shutil.move(source, destination)
except shutil.Error, data:
raise iPluginError("Error moving '%s' to '%s'." % (source, destination))
def _init_mirror(self, event):
""" First event ever - do first time sync. """
try:
if os.path.exists(self._config['replica_destination']):
self._delete_target(self._config['replica_destination'])
shutil.copytree(self._watch.get_path(), self._config['replica_destination'])
except iPluginError:
raise
except (IOError, shutil.Error), data:
raise iPluginError("Error creating initial mirror: %s" % data)
def _delete_target(self, target):
""" Delete target file/directory. """
try:
if os.path.exists(target):
if os.path.isdir(target):
shutil.rmtree(target)
else:
os.unlink(target)
else:
# We are getting the DELETE event of a file that was actually
# deleted before we can even recreate it.
# So do nothing...
pass
except Exception, data:
raise iPluginError("Error deleting '%s': %s" % (target, data))
iPlugin.__init__(self, *args, **kwargs)
def _init_mirror(self, event):
""" First event ever - do first time sync. """
try:
if os.path.exists(self._config['replica_destination']):
self._delete_target(self._config['replica_destination'])
shutil.copytree(self._watch.get_path(), self._config['replica_destination'])
except iPluginError:
raise
except (IOError, shutil.Error), data:
raise iPluginError("Error creating initial mirror: %s" % data)
except Exception, data:
raise iPluginError("Unexpected error while creating initial mirror: %s" % data)
except:
raise iPluginError("Unexpected error while creating initial mirror.")
def _prepare_move(self, event):
""" Prepare a move from a MOVED_FROM event. """
# An object was moved out. Wait to see if the next
# event that we'll get is going to be an IN_MOVED_TO one.
self._cache.push('mirror_' + self._watch.get_path(), event)
def _finish_move(self, event, cached_event=None):
""" A matching MOVED_TO event received - do the move. """
try:
source = os.path.join(cached_event.path, cached_event.name)
source = self._form_destination(source)
destination = os.path.join(event.path, event.name)
destination = self._form_destination(destination)
shutil.move(source, destination)
