LangChain 271

[kreneskyp]

Description

Update to LangChain 0.0.268 for Conversational Retrieval Chain and other features.

Changes

• updated to langchain==0.0.271
• AgentProcess now calls chain.ainvoke instead of chain.arun

How Tested

• unittests
• manual test of agents
• added unittest for OpenAPIFunctionChain

TODOs

• OpenAPIFunctionsChain isn't initializing. It's failing to parse the spec from url. stacktrace for OpenAPISpec.from_url. Breaks @smithy and @klarna agents.

  • Tracked regression to change near langchain==0.0.268.
  • Workaround applied in 86b9b80.
  • Upstream ticket: AttributeError: 'super' object has no attribute 'parse_obj' when using OpenAPISpec.from_file langchain-ai/langchain#9520

File "/var/app/ix/chains/openapi.py", line 30, in get_openapi_chain_async
    chain = get_openapi_chain(**kwargs)
File "/var/app/langchain/libs/langchain/langchain/chains/openai_functions/openapi.py", line 271, in get_openapi_chain
    raise e
File "/var/app/langchain/libs/langchain/langchain/chains/openai_functions/openapi.py", line 267, in get_openapi_chain
    spec = conversion(spec)  # type: ignore[arg-type]
File "/var/app/langchain/libs/langchain/langchain/utilities/openapi.py", line 242, in from_url
    return cls.from_text(response.text)
File "/var/app/langchain/libs/langchain/langchain/utilities/openapi.py", line 227, in from_text
    return cls.from_spec_dict(spec_dict)
File "/var/app/langchain/libs/langchain/langchain/utilities/openapi.py", line 218, in from_spec_dict
    return cls.parse_obj(spec_dict)
File "/var/app/langchain/libs/langchain/langchain/utilities/openapi.py", line 202, in parse_obj
    return super().parse_obj(obj)