def __getitem__(self, index):
'''
Gets a message in the channel by its index.
This function loads the message from disk into memory.
'''
_, uuid = self._messages[index]
message = Message.create_message_reader(self._cask.read_message(uuid))
assert message.uuid == uuid
return message
def read_message(self, uuid: str):
'''
Reads a proto message with specified uuid from Cask
Args:
uuid (str): uuid in string of the message
'''
assert uuid is not None
if self._writable:
# FIXME Handles reading in write model
raise NotImplementedError(
'Reading is to be implemented in writing mode')
return Message.create_message_reader(self._cask.read_message(uuid))