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fix(server-utils): Create an invoke_agent span for LangGraph stream() - #25749
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LangGraph runs the graph as soon as stream() is called, whether or not the stream is read, so the span ends on the run's own end or error callback. A break never reaches those callbacks, so it ends the span too. Co-Authored-By: Seongho.Bak <psh30095@gmail.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…lpers Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…allbacks invoke() and stream() now copy the config instead of writing Sentry's metadata and callbacks into the caller's object, and start from the parent run's callbacks when none are passed, as LangChain would. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Optional E2E testsSome optional checks were not successful. They do not block the merge. 8 not successful, 48 successful. See the run.
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…ynchronously LangGraph's invoke() calls this.stream() before its first await, so a flag set around that synchronous call replaces the scope marker. The createReactAgent compile guard now uses the manual-instrumentation flag. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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size-limit report 📦Compared: d285910 (PR test merge using develop at a2dbec0) Against: c054e7a (develop) · base run #65086
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CompiledGraph.stream()produced nogen_ai.invoke_agentspan, so the chat and tool spans of a streamed run had no agent span above them.LangGraph runs the graph as soon as
stream()is called, whether or not anyone reads it, so the span now follows the run. It ends on the run's ownhandleChainEnd/handleChainError, and the output comes from the final state, the same wayinvoke()records it.invoke()keeps its single span. The shared setup also no longer writes Sentry's metadata and callbacks into the caller's config, and a graph seen by bothinstrumentStateGraph()and the integration is wrapped once, with the manual options winning.Known limitation. When a caller stops reading early, LangGraph keeps running the graph but never reports the run's end. After a
breakthe span ends at the break, so later nodes' spans start after it. Afterreader.cancel()or a client disconnecting fromnew Response(stream), the span never ends.Replaces #23615. Co-authored with @psh4607 from that PR.
Fixes #19626
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