fixed typecheck

wrisa · wrisa · commit 3adb69cb5af5 · 2025-08-05T19:50:02.000-07:00
diff --git a/instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/callback_handler.py b/instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/callback_handler.py
@@ -58,7 +58,7 @@ def on_chat_model_start(
     ) -> None:
         invocation_params = kwargs.get("invocation_params")
         request_model = (
-            invocation_params.get("model_name") if invocation_params else None
+            invocation_params.get("model_name") if invocation_params else ""
         )
         span = self.span_manager.create_llm_span(
             run_id=run_id,

Original file line number	Diff line number	Diff line change
`@@ -58,7 +58,7 @@ def on_chat_model_start(`
`58`	`58`	`) -> None:`
`59`	`59`	`invocation_params = kwargs.get("invocation_params")`
`60`	`60`	`request_model = (`
`61`		`- invocation_params.get("model_name") if invocation_params else None`
	`61`	`+ invocation_params.get("model_name") if invocation_params else ""`
`62`	`62`	`)`
`63`	`63`	`span = self.span_manager.create_llm_span(`
`64`	`64`	`run_id=run_id,`