Add test_connection support to LangChainHook and LlamaIndexHook - #71841
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ColtenOuO wants to merge 1 commit into
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Add test_connection support to LangChainHook and LlamaIndexHook#71841ColtenOuO wants to merge 1 commit into
ColtenOuO wants to merge 1 commit into
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Clicking Test on a LangChain or LlamaIndex connection in the UI always reported "doesn't implement or inherit test_connection method" since neither hook implemented it, unlike PydanticAIHook and MCPHook which already validate their connections this way.
ColtenOuO
requested review from
Lee-W,
ashb,
gopidesupavan and
kaxil
as code owners
August 19, 2026 13:56
SameerMesiah97
approved these changes
Aug 19, 2026
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Summary
LangChainHookandLlamaIndexHookare two of the four selectable connection types in thecommon.aiprovider, but neither implementedtest_connection().Clicking "Test" on a connection of either type in the UI always returned:
PydanticAIHookandMCPHook— the other two connection types in this provider already implement it, resolving the model/config without making a real API call.Changes
This PR adds the same pattern to the two missing hooks:
LangChainHook.test_connection()resolves the chat model viaget_chat_model().LlamaIndexHook.test_connection()resolves the LLM viaget_llm().Was generative AI tooling used to co-author this PR?