chore: force flush OTel logs at the end of each request

tests/unit/vertex_adk/test_agent_engine_templates_adk.py

@@ -170,6 +170,34 @@ def trace_provider_mock():
         yield tracer_provider_mock
 
 
+@pytest.fixture
+def trace_provider_force_flush_mock():
+    import opentelemetry.trace
+    import opentelemetry.sdk.trace
+
+    with mock.patch.object(
+        opentelemetry.trace, "get_tracer_provider"
+    ) as get_tracer_provider_mock:
+        get_tracer_provider_mock.return_value = mock.Mock(
+            spec=opentelemetry.sdk.trace.TracerProvider()
+        )
+        yield get_tracer_provider_mock.return_value.force_flush
+
+
+@pytest.fixture
+def logger_provider_force_flush_mock():
+    import opentelemetry._logs
+    import opentelemetry.sdk._logs
+
+    with mock.patch.object(
+        opentelemetry._logs, "get_logger_provider"
+    ) as get_logger_provider_mock:
+        get_logger_provider_mock.return_value = mock.Mock(
+            spec=opentelemetry.sdk._logs.LoggerProvider()
+        )
+        yield get_logger_provider_mock.return_value.force_flush
+
+
 @pytest.fixture
 def default_instrumentor_builder_mock():
     with mock.patch(
@@ -351,6 +379,29 @@ async def test_async_stream_query(self):
             events.append(event)
         assert len(events) == 1
 
+    @pytest.mark.asyncio
+    @mock.patch.dict(
+        os.environ,
+        {GOOGLE_CLOUD_AGENT_ENGINE_ENABLE_TELEMETRY: "true"},
+    )
+    async def test_async_stream_query_force_flush_otel(
+        self,
+        trace_provider_force_flush_mock: mock.Mock,
+        logger_provider_force_flush_mock: mock.Mock,
+    ):
+        app = agent_engines.AdkApp(agent=_TEST_AGENT)
+        assert app._tmpl_attrs.get("runner") is None
+        app.set_up()
+        app._tmpl_attrs["runner"] = _MockRunner()
+        async for _ in app.async_stream_query(
+            user_id=_TEST_USER_ID,
+            message="test message",
+        ):
+            pass
+
+        trace_provider_force_flush_mock.assert_called_once()
+        logger_provider_force_flush_mock.assert_called_once()
+
     @pytest.mark.asyncio
     async def test_async_stream_query_with_content(self):
         app = agent_engines.AdkApp(agent=_TEST_AGENT)
@@ -403,6 +454,46 @@ async def test_streaming_agent_run_with_events(self):
             events.append(event)
         assert len(events) == 1
 
+    @pytest.mark.asyncio
+    @mock.patch.dict(
+        os.environ,
+        {GOOGLE_CLOUD_AGENT_ENGINE_ENABLE_TELEMETRY: "true"},
+    )
+    async def test_streaming_agent_run_with_events_force_flush_otel(
+        self,
+        trace_provider_force_flush_mock: mock.Mock,
+        logger_provider_force_flush_mock: mock.Mock,
+    ):
+        app = agent_engines.AdkApp(agent=_TEST_AGENT)
+        app.set_up()
+        app._tmpl_attrs["in_memory_runner"] = _MockRunner()
+        request_json = json.dumps(
+            {
+                "artifacts": [
+                    {
+                        "file_name": "test_file_name",
+                        "versions": [{"version": "v1", "data": "v1data"}],
+                    }
+                ],
+                "authorizations": {
+                    "test_user_id1": {"access_token": "test_access_token"},
+                    "test_user_id2": {"accessToken": "test-access-token"},
+                },
+                "user_id": _TEST_USER_ID,
+                "message": {
+                    "parts": [{"text": "What is the exchange rate from USD to SEK?"}],
+                    "role": "user",
+                },
+            }
+        )
+        async for _ in app.streaming_agent_run_with_events(
+            request_json=request_json,
+        ):
+            pass
+
+        trace_provider_force_flush_mock.assert_called_once()
+        logger_provider_force_flush_mock.assert_called_once()
+
     @pytest.mark.asyncio
     async def test_async_create_session(self):
         app = agent_engines.AdkApp(agent=_TEST_AGENT)

tests/unit/vertex_adk/test_reasoning_engine_templates_adk.py

@@ -128,6 +128,34 @@ def trace_provider_mock():
         yield tracer_provider_mock
 
 
+@pytest.fixture
+def trace_provider_force_flush_mock():
+    import opentelemetry.trace
+    import opentelemetry.sdk.trace
+
+    with mock.patch.object(
+        opentelemetry.trace, "get_tracer_provider"
+    ) as get_tracer_provider_mock:
+        get_tracer_provider_mock.return_value = mock.Mock(
+            spec=opentelemetry.sdk.trace.TracerProvider()
+        )
+        yield get_tracer_provider_mock.return_value.force_flush
+
+
+@pytest.fixture
+def logger_provider_force_flush_mock():
+    import opentelemetry._logs
+    import opentelemetry.sdk._logs
+
+    with mock.patch.object(
+        opentelemetry._logs, "get_logger_provider"
+    ) as get_logger_provider_mock:
+        get_logger_provider_mock.return_value = mock.Mock(
+            spec=opentelemetry.sdk._logs.LoggerProvider()
+        )
+        yield get_logger_provider_mock.return_value.force_flush
+
+
 @pytest.fixture
 def default_instrumentor_builder_mock():
     with mock.patch(
@@ -353,6 +381,31 @@ async def test_async_stream_query(self):
             events.append(event)
         assert len(events) == 1
 
+    @pytest.mark.asyncio
+    @mock.patch.dict(
+        os.environ,
+        {"GOOGLE_CLOUD_AGENT_ENGINE_ENABLE_TELEMETRY": "true"},
+    )
+    async def test_async_stream_query_force_flush_otel(
+        self,
+        trace_provider_force_flush_mock: mock.Mock,
+        logger_provider_force_flush_mock: mock.Mock,
+    ):
+        app = reasoning_engines.AdkApp(
+            agent=Agent(name=_TEST_AGENT_NAME, model=_TEST_MODEL), enable_tracing=True
+        )
+        assert app._tmpl_attrs.get("runner") is None
+        app.set_up()
+        app._tmpl_attrs["runner"] = _MockRunner()
+        async for _ in app.async_stream_query(
+            user_id=_TEST_USER_ID,
+            message="test message",
+        ):
+            pass
+
+        trace_provider_force_flush_mock.assert_called_once()
+        logger_provider_force_flush_mock.assert_called_once()
+
     @pytest.mark.asyncio
     async def test_async_stream_query_with_content(self):
         app = reasoning_engines.AdkApp(
@@ -404,6 +457,46 @@ def test_streaming_agent_run_with_events(self):
         events = list(app.streaming_agent_run_with_events(request_json=request_json))
         assert len(events) == 1
 
+    @pytest.mark.asyncio
+    @mock.patch.dict(
+        os.environ,
+        {"GOOGLE_CLOUD_AGENT_ENGINE_ENABLE_TELEMETRY": "true"},
+    )
+    async def test_streaming_agent_run_with_events_force_flush_otel(
+        self,
+        trace_provider_force_flush_mock: mock.Mock,
+        logger_provider_force_flush_mock: mock.Mock,
+    ):
+        app = reasoning_engines.AdkApp(
+            agent=Agent(name=_TEST_AGENT_NAME, model=_TEST_MODEL),
+            enable_tracing=True,
+        )
+        app.set_up()
+        app._tmpl_attrs["in_memory_runner"] = _MockRunner()
+        request_json = json.dumps(
+            {
+                "artifacts": [
+                    {
+                        "file_name": "test_file_name",
+                        "versions": [{"version": "v1", "data": "v1data"}],
+                    }
+                ],
+                "authorizations": {
+                    "test_user_id1": {"access_token": "test_access_token"},
+                    "test_user_id2": {"accessToken": "test-access-token"},
+                },
+                "user_id": _TEST_USER_ID,
+                "message": {
+                    "parts": [{"text": "What is the exchange rate from USD to SEK?"}],
+                    "role": "user",
+                },
+            }
+        )
+        list(app.streaming_agent_run_with_events(request_json=request_json))
+
+        trace_provider_force_flush_mock.assert_called_once()
+        logger_provider_force_flush_mock.assert_called_once()
+
     @pytest.mark.asyncio
     async def test_async_bidi_stream_query(self):
         app = reasoning_engines.AdkApp(

vertexai/agent_engines/templates/adk.py

@@ -25,6 +25,7 @@
 )
 
 import asyncio
+from collections.abc import Awaitable
 import queue
 import threading
 import warnings
@@ -231,26 +232,38 @@ def _warn(msg: str):
     _warn._LOGGER.warning(msg)  # pyright: ignore[reportFunctionMemberAccess]
 
 
-def _force_flush_traces():
+async def _force_flush_otel(tracing_enabled: bool, logging_enabled: bool):
     try:
         import opentelemetry.trace
+        import opentelemetry._logs
     except (ImportError, AttributeError):
         _warn(
-            "Could not force flush traces. opentelemetry-api is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
+            "Could not force flush telemetry data. opentelemetry-api is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
         )
         return None
 
     try:
         import opentelemetry.sdk.trace
+        import opentelemetry.sdk._logs
     except (ImportError, AttributeError):
         _warn(
-            "Could not force flush traces. opentelemetry-sdk is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
+            "Could not force flush telemetry data. opentelemetry-sdk is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
         )
         return None
 
-    provider = opentelemetry.trace.get_tracer_provider()
-    if isinstance(provider, opentelemetry.sdk.trace.TracerProvider):
-        _ = provider.force_flush()
+    coros: List[Awaitable[bool]] = []
+
+    if tracing_enabled:
+        tracer_provider = opentelemetry.trace.get_tracer_provider()
+        if isinstance(tracer_provider, opentelemetry.sdk.trace.TracerProvider):
+            coros.append(asyncio.to_thread(tracer_provider.force_flush))
+
+    if logging_enabled:
+        logger_provider = opentelemetry._logs.get_logger_provider()
+        if isinstance(logger_provider, opentelemetry.sdk._logs.LoggerProvider):
+            coros.append(asyncio.to_thread(logger_provider.force_flush))
+
+    await asyncio.gather(*coros, return_exceptions=True)
 
 
 def _default_instrumentor_builder(
@@ -894,9 +907,11 @@ async def async_stream_query(
                 # Yield the event data as a dictionary
                 yield _utils.dump_event_for_json(event)
         finally:
-            # Avoid trace data loss having to do with CPU throttling on instance turndown
-            if self._tracing_enabled():
-                _ = await asyncio.to_thread(_force_flush_traces)
+            # Avoid telemetry data loss having to do with CPU throttling on instance turndown
+            _ = await _force_flush_otel(
+                tracing_enabled=self._tracing_enabled(),
+                logging_enabled=bool(self._telemetry_enabled()),
+            )
 
     def stream_query(
         self,
@@ -1066,9 +1081,11 @@ async def streaming_agent_run_with_events(self, request_json: str):
                     user_id=request.user_id,
                     session_id=session.id,
                 )
-            # Avoid trace data loss having to do with CPU throttling on instance turndown
-            if self._tracing_enabled():
-                _ = await asyncio.to_thread(_force_flush_traces)
+            # Avoid telemetry data loss having to do with CPU throttling on instance turndown
+            _ = await _force_flush_otel(
+                tracing_enabled=self._tracing_enabled(),
+                logging_enabled=bool(self._telemetry_enabled()),
+            )
 
     async def async_get_session(
         self,

vertexai/preview/reasoning_engines/templates/adk.py

@@ -25,6 +25,7 @@
 )
 
 import asyncio
+from collections.abc import Awaitable
 import queue
 import threading
 
@@ -233,26 +234,38 @@ def _warn(msg: str):
     _warn._LOGGER.warning(msg)  # pyright: ignore[reportFunctionMemberAccess]
 
 
-def _force_flush_traces():
+async def _force_flush_otel(tracing_enabled: bool, logging_enabled: bool):
     try:
         import opentelemetry.trace
+        import opentelemetry._logs
     except (ImportError, AttributeError):
         _warn(
-            "Could not force flush traces. opentelemetry-api is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
+            "Could not force flush telemetry data. opentelemetry-api is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
         )
         return None
 
     try:
         import opentelemetry.sdk.trace
+        import opentelemetry.sdk._logs
     except (ImportError, AttributeError):
         _warn(
-            "Could not force flush traces. opentelemetry-sdk is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
+            "Could not force flush telemetry data. opentelemetry-sdk is not installed. Please call  'pip install google-cloud-aiplatform[agent_engines]'."
         )
         return None
 
-    provider = opentelemetry.trace.get_tracer_provider()
-    if isinstance(provider, opentelemetry.sdk.trace.TracerProvider):
-        _ = provider.force_flush()
+    coros: List[Awaitable[bool]] = []
+
+    if tracing_enabled:
+        tracer_provider = opentelemetry.trace.get_tracer_provider()
+        if isinstance(tracer_provider, opentelemetry.sdk.trace.TracerProvider):
+            coros.append(asyncio.to_thread(tracer_provider.force_flush))
+
+    if logging_enabled:
+        logger_provider = opentelemetry._logs.get_logger_provider()
+        if isinstance(logger_provider, opentelemetry.sdk._logs.LoggerProvider):
+            coros.append(asyncio.to_thread(logger_provider.force_flush))
+
+    await asyncio.gather(*coros, return_exceptions=True)
 
 
 def _default_instrumentor_builder(
@@ -891,9 +904,11 @@ async def async_stream_query(
                 # Yield the event data as a dictionary
                 yield _utils.dump_event_for_json(event)
         finally:
-            # Avoid trace data loss having to do with CPU throttling on instance turndown
-            if self._tracing_enabled():
-                _ = await asyncio.to_thread(_force_flush_traces)
+            # Avoid telemetry data loss having to do with CPU throttling on instance turndown
+            _ = await _force_flush_otel(
+                tracing_enabled=self._tracing_enabled(),
+                logging_enabled=bool(self._telemetry_enabled()),
+            )
 
     def streaming_agent_run_with_events(self, request_json: str):
         import json
@@ -970,9 +985,11 @@ async def _invoke_agent_async():
                         user_id=request.user_id,
                         session_id=session.id,
                     )
-                # Avoid trace data loss having to do with CPU throttling on instance turndown
-                if self._tracing_enabled():
-                    _ = await asyncio.to_thread(_force_flush_traces)
+                # Avoid telemetry data loss having to do with CPU throttling on instance turndown
+                _ = await _force_flush_otel(
+                    tracing_enabled=self._tracing_enabled(),
+                    logging_enabled=bool(self._telemetry_enabled()),
+                )
 
         def _asyncio_thread_main():
             try: