langchain_community.llms.sagemaker_endpoint.LineIterator¶
- class langchain_community.llms.sagemaker_endpoint.LineIterator(stream: Any)[source]¶
A helper class for parsing the byte stream input.
The output of the model will be in the following format:
b’{“outputs”: [” a”]}
- ‘
b’{“outputs”: [” challenging”]}
- ‘
b’{“outputs”: [” problem”]}
- ‘
…
While usually each PayloadPart event from the event stream will contain a byte array with a full json, this is not guaranteed and some of the json objects may be split acrossPayloadPart events.
For example:
{‘PayloadPart’: {‘Bytes’: b’{“outputs”: ‘}} {‘PayloadPart’: {‘Bytes’: b’[” problem”]}
‘}}
This class accounts for this by concatenating bytes written via the ‘write’ function and then exposing a method which will return lines (ending with a ‘
- ‘ character)
within the buffer via the ‘scan_lines’ function. It maintains the position of the last read position to ensure that previous bytes are not exposed again.
For more details see: https://aws.amazon.com/blogs/machine-learning/elevating-the-generative-ai-experience-introducing-streaming-support-in-amazon-sagemaker-hosting/
Methods
__init__(stream)- Parameters
stream (Any) –