def __init__(self, **options):
bus_name = dbus.service.BusName(DS_SERVICE,
bus=dbus.SessionBus(),
replace_existing=False,
allow_replacement=False)
dbus.service.Object.__init__(self, bus_name, DS_OBJECT_PATH)
migrated, initiated = self._open_layout()
self._metadata_store = MetadataStore()
self._file_store = FileStore()
self._optimizer = Optimizer(self._file_store, self._metadata_store)
self._index_store = IndexStore()
self._index_updating = False
root_path = layoutmanager.get_instance().get_root_path()
self._cleanflag = os.path.join(root_path, 'ds_clean')
if initiated:
logging.debug('Initiate datastore')
self._rebuild_index()
self._index_store.flush()
self._mark_clean()
return
if migrated:
self._rebuild_index()
self._mark_clean()
return
rebuild = False
stat = os.statvfs(root_path)
da = stat.f_bavail * stat.f_bsize
if not self._index_store.index_updated:
logging.warn('Index is not up-to-date')
rebuild = True
elif not os.path.exists(self._cleanflag):
logging.warn('DS state is not clean')
rebuild = True
elif da < MIN_INDEX_FREE_BYTES:
logging.warn('Disk space tight for index')
rebuild = True
if rebuild:
logging.warn('Trigger index rebuild')
self._rebuild_index()
else:
# fast path
try:
self._index_store.open_index()
except BaseException:
logging.exception('Failed to open index')
# try...
self._rebuild_index()
self._mark_clean()
return
