Linking Auto-Instrumented and Manual Spans in LangChain

Edgar G. · 2024-12-13T13:22:47.856Z

Is there a any to link the span/context of the auto inserted LangChainInstrumentation with span manually placed? I've a customized tool where I want extra information. But the spans are disjoint right now

To link the span/context of auto-inserted LangChainInstrumentation with manually placed spans, you need to ensure that the manual spans are created within the context of the auto-instrumented spans. According to Slack Discussion, manual instrumentation is not directly compatible with the usual OpenTelemetry (OTEL) contexts used by LangChain's callback system. However, you can create a custom retriever and use a callback manager similar to LangChain's approach to integrate manual spans.Would you like more detail on how to implement this? Sources: - Slack Discussion - Slack Discussion

💡 Hint: Mention RunLLM in the thread for followups.

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