def pop(self, uuid_str):
if not self.__lock.locked():
raise store_exception.StoreLockException('the caller must hold DataStoreList lock')
if not (uuid_str in self.__datastore_list):
raise store_exception.StoreInvalidException('invalid datastore uuid')
return self.__datastore_list.pop(uuid_str)
def exists(self, uuid_str):
if not self.__lock.locked():
raise store_exception.StoreLockException('the caller must hold DataStoreList lock')
if not (uuid_str in self.__datastore_list):
return False
return True
def append(self, datastore):
assert isinstance(datastore, DataStore)
if not self.__lock.locked():
raise store_exception.StoreLockException('the caller must hold DataStoreList lock')
with datastore.lock:
if datastore.uuid in self.__datastore_list:
raise store_exception.StoreInvalidException('datastore(%s) already in datastore list' % datastore.uuid)
else:
self.__datastore_list[datastore.uuid] = datastore
def __next__(self):
if not self.__lock.locked():
raise store_exception.StoreLockException('the caller must hold DataStoreList lock')
return self.__datastore_list[next(self.it)]
def __iter__(self):
if not self.__lock.locked():
raise store_exception.StoreLockException('the caller must hold DataStoreList lock')
self.it = iter(self.__datastore_list)
return self