feat(core): Instrument langgraph createReactAgent#20344
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feat(core): Instrument langgraph createReactAgent#20344andreiborza wants to merge 1 commit intodevelopfrom
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This PR adds instrumentation for LangGraph's `createReactAgent` API. It: - extracts agent name, LLM model, and tools from params - wraps compiled graph's `invoke()` with invoke_agent span - wraps tool `invoke()` with execute_tool spans (name, type, description, arguments, result per our new conventions) - injects LangChain callback handler + `lc_agent_name` metadata at invoke level for chat span creation and agent name propagation to all child spans - suppresses `StateGraph.compile` instrumentation inside `createReactAgent` to avoid duplicate spans The LangChain callback handler was improved to: - read gen_ai.agent.name from `metadata.lc_agent_name` (this is a convention in newer versions of LangGraph createAgent so we took this over for our supported version) - suppresses chain and tool callback spans inside agent context to avoid duplicates with our direct instrumentation (based on `metadata.loc_agent_name` presence) - extracts tool definitions from `extraParams` in `handleChatModelStart` - supports OpenAI tool calls via `message.tool_calls` (not just Anthropic content scanning) - normalizes tool call format and use our new convention attributes - uses `runName` for tool name (set by LangChain's StructuredTool) It exports: - `instrumentCreateReactAgent` from core, browser, cloudflare - New constants: - GEN_AI_TOOL_CALL_ARGUMENTS_ATTRIBUTE, - GEN_AI_TOOL_CALL_RESULT_ATTRIBUTE Closes: #19372
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This PR adds instrumentation for LangGraph's
createReactAgentAPI.It:
invoke()with invoke_agent spaninvoke()with execute_tool spans (name, type, description, arguments, result per our new conventions)lc_agent_namemetadata at invoke level for chat span creation and agent name propagation to all child spansStateGraph.compileinstrumentation insidecreateReactAgentto avoid duplicate spansThe LangChain callback handler was improved to:
metadata.lc_agent_name(this is a convention in newer versions of LangGraph createAgent so we took this over for our supported version)metadata.loc_agent_namepresence)extraParamsinhandleChatModelStartmessage.tool_calls(not just Anthropic content scanning)runNamefor tool name (set by LangChain's StructuredTool)It exports:
instrumentCreateReactAgentfrom core, browser, cloudflareGEN_AI_TOOL_CALL_ARGUMENTS_ATTRIBUTE,GEN_AI_TOOL_CALL_RESULT_ATTRIBUTECloses: #19372