Update _responses_instrumentor.py

This script fails to run, and this PR is the fix.

import os
import logging

# 1) MUST be set before Azure SDK imports/client construction
os.environ.setdefault("AZURE_EXPERIMENTAL_ENABLE_GENAI_TRACING", "true")

# Tracing setup (required order)
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.sampling import ALWAYS_OFF

from azure.core.settings import settings
from azure.core.tracing.ext.opentelemetry_span import OpenTelemetrySpan
from azure.ai.projects.telemetry import AIProjectInstrumentor
from azure.ai.projects import AIProjectClient
from azure.identity import DefaultAzureCredential


def main() -> None:
    logging.basicConfig(level=logging.DEBUG)
    logging.getLogger("azure").setLevel(logging.DEBUG)
    logging.getLogger("openai").setLevel(logging.DEBUG)

    endpoint = os.environ.get("FOUNDRY_PROJECT_ENDPOINT")
    model = os.environ.get("FOUNDRY_MODEL_NAME")
    if not endpoint:
        raise RuntimeError("FOUNDRY_PROJECT_ENDPOINT is not set")
    if not model:
        raise RuntimeError("FOUNDRY_MODEL_NAME is not set")

    # 2) Global tracer provider with ALWAYS_OFF -> NonRecordingSpan
    trace.set_tracer_provider(TracerProvider(sampler=ALWAYS_OFF))

    # 3) Use OpenTelemetry span implementation for azure-core tracing
    settings.tracing_implementation = OpenTelemetrySpan

    # 4) Explicitly activate AI Projects instrumentor exactly once
    AIProjectInstrumentor().instrument()

    credential = DefaultAzureCredential()
    client = AIProjectClient(endpoint=endpoint, credential=credential)

    # 5) Responses API call through OpenAI client
    openai_client = client.get_openai_client()
    response = openai_client.responses.create(
        model=model,
        input=[{"role": "user", "content": "hello from repro for #46544"}],
    )

    output_text = getattr(response, "output_text", None) or ""
    print(f"response_id={response.id}")
    print(f"output_text={output_text}")


if __name__ == "__main__":
    main()

Author: howieleung

sdk/ai/azure-ai-projects/azure/ai/projects/telemetry/_responses_instrumentor.py

@@ -557,6 +557,10 @@ def _append_to_message_attribute(
         new_messages: List[Dict[str, Any]],
     ) -> None:
         """Helper to append messages to an existing attribute, combining with previous messages."""
+
+        if not span.span_instance.is_recording():
+            return        
+        
         # Get existing attribute value
         existing_value = span.span_instance.attributes.get(attribute_name) if span.span_instance.attributes else None