fix(api): bump OpenTelemetry to stop duplicate Flask context detach (#39921)

api/tests/unit_tests/extensions/otel/test_flask_instrumentation.py

@@ -0,0 +1,57 @@
+"""
+Guards the OpenTelemetry Flask instrumentation contract Dify relies on.
+
+Flask can run teardown handlers more than once for a request. Instrumentation
+versions before 0.63b0 left the span activation and context token in
+``request.environ`` after the first teardown, so the second one detached an
+already-used token and the OTel API logged "Failed to detach context" for every
+affected request.
+"""
+
+import logging
+from collections.abc import Iterator
+
+import flask
+import pytest
+from opentelemetry.instrumentation.flask import FlaskInstrumentor
+
+
+@pytest.fixture
+def instrumented_app() -> Iterator[flask.Flask]:
+    app = flask.Flask(__name__)
+
+    @app.route("/ping")
+    def ping() -> str:
+        return "pong"
+
+    instrumentor = FlaskInstrumentor()
+    instrumentor.instrument_app(app)
+    yield app
+    instrumentor.uninstrument_app(app)
+
+
+@pytest.mark.usefixtures("tracer_provider_with_memory_exporter")
+def test_duplicate_teardown_does_not_log_detach_failure(
+    instrumented_app: flask.Flask, caplog: pytest.LogCaptureFixture
+) -> None:
+    handlers = instrumented_app.teardown_request_funcs[None]
+    # instrument_app registers its teardown handler last.
+    index = len(handlers) - 1
+    instrumentation_teardown = handlers[index]
+    calls = 0
+
+    def teardown_twice(exc: BaseException | None) -> None:
+        nonlocal calls
+        calls += 1
+        instrumentation_teardown(exc)
+        instrumentation_teardown(exc)
+
+    handlers[index] = teardown_twice
+    try:
+        with caplog.at_level(logging.ERROR, logger="opentelemetry.context"):
+            assert instrumented_app.test_client().get("/ping").status_code == 200
+    finally:
+        handlers[index] = instrumentation_teardown
+
+    assert calls == 1, "the instrumentation teardown never ran, so nothing was exercised"
+    assert "Failed to detach context" not in caplog.text