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fix(opentelemetry): JSON-serialize dict metadata fields for OTEL span attributes (#27451) (#27455)

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Squash-merged by litellm-agent from Anai-Guo's PR.
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Tai An 2026-05-08 03:31:49 -07:00 • committed by GitHub
parent 98cd057f38
commit 760e55826a
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1 changed files with 7 additions and 2 deletions
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9
litellm/integrations/opentelemetry.py
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@ -876,8 +876,13 @@ class OpenTelemetry(CustomLogger):
"mcp_tool_call_metadata",
"vector_store_request_metadata",
]:
if md.get(key) is not None:
common_attrs[f"metadata.{key}"] = str(md[key])
value = md.get(key)
if value is None:
continue
if isinstance(value, (dict, list)):
common_attrs[f"metadata.{key}"] = safe_dumps(value)
else:
common_attrs[f"metadata.{key}"] = str(value)
# get hidden params
hidden_params = getattr(std_log, "hidden_params", None) or (std_log or {}).get(