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chore: completes OPEN-7314 Process input/output of root step of LangG… #529

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Merged
merged 1 commit into from
Sep 9, 2025
Merged

chore: completes OPEN-7314 Process input/output of root step of LangG… #529

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15 changes: 14 additions & 1 deletion src/openlayer/lib/integrations/langchain_callback.py
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Original file line number Diff line number Diff line change
Expand Up @@ -562,6 +562,11 @@ def _handle_chain_start(
if tags and "langsmith:hidden" in tags:
return

if chain_name == "LangGraph" and inputs.get("messages"):
inputs = {
"prompt": inputs.get("messages"),
}

self._start_step(
run_id=run_id,
parent_run_id=parent_run_id,
Expand All @@ -571,7 +576,6 @@ def _handle_chain_start(
metadata={
"tags": tags,
"serialized": serialized,
"is_chain": True,
**(metadata or {}),
**kwargs,
},
Expand Down Expand Up @@ -607,6 +611,15 @@ def _handle_chain_end(
if current_trace:
current_trace.update_metadata(context=context_list)

# Parse output for LangGraph
step = self.steps[run_id]
if step.name == "LangGraph" and outputs.get("messages"):
if isinstance(outputs.get("messages"), list):
if isinstance(
outputs.get("messages")[-1], langchain_schema.BaseMessage
):
outputs = outputs.get("messages")[-1].content

self._end_step(
run_id=run_id,
parent_run_id=parent_run_id,
Expand Down