[opentelemetry-instrumentation-google-genai] Add response ID attribute to the interactions API telemetry (inference span and event)

instrumentation/opentelemetry-instrumentation-google-genai/.changelog/233.added

@@ -0,0 +1 @@
+Add response.id semantic convention attribute to interactions telemetry.

instrumentation/opentelemetry-instrumentation-google-genai/src/opentelemetry/instrumentation/google_genai/interactions.py

@@ -82,6 +82,8 @@ def _apply_interaction_response_attributes(
     telemetry_handler: TelemetryHandler,
 ) -> None:
     invocation.response_model_name = response.model
+    if getattr(response, "id", None):
+        invocation.response_id = response.id
 
     usage = response.usage or Usage()
 

instrumentation/opentelemetry-instrumentation-google-genai/tests/interactions/base.py

@@ -155,6 +155,26 @@ def test_generated_span_has_minimal_genai_attributes(self) -> None:
             "generativelanguage.googleapis.com",
         )
 
+    def test_generated_span_has_response_id(self) -> None:
+        self.configure_valid_interaction(interaction_id="interaction-123")
+        self.run_interaction(
+            model="gemini-2.5-flash",
+            input="Follow-up question",
+        )
+        span = self.otel.get_span_named("interactions.create gemini-2.5-flash")
+        self.assertEqual(
+            span.attributes["gen_ai.response.id"], "interaction-123"
+        )
+        self.otel.assert_has_event_named(
+            "gen_ai.client.inference.operation.details"
+        )
+        event = self.otel.get_event_named(
+            "gen_ai.client.inference.operation.details"
+        )
+        self.assertEqual(
+            event.attributes["gen_ai.response.id"], "interaction-123"
+        )
+
     def test_span_and_event_still_written_when_response_is_exception(
         self,
     ) -> None: