SIENTIAPDE-1314

Enhance OPC Metrics Handling and Refactor Write Operations

- Updated the OPC class to return response times for write operations, improving metrics tracking.
- Refactored the Gates activity to incorporate OPC metrics into the metrics writing process.
- Adjusted the manage_output_tags method in OpcRepository to return response times for each tag written.
- Modified tests to validate the new metrics structure and ensure correct behavior of the updated methods.

tests/laborious/activities/test_gates.py

@@ -1,4 +1,4 @@
-from unittest.mock import ANY, MagicMock, patch
+from unittest.mock import ANY, MagicMock, call, patch
 
 from pytest import fixture, mark
 from sientia_do.notifications.models import NotificationLevel
@@ -636,6 +636,7 @@ async def test_write_metrics(mock_metrics, gates_activity):
             'prediction_confidence': [0.9, 0.8, 0.7],
             'response_time': [0.1, 0.2, 0.3],
         },
+        'opc_metrics': {'server1': {'tag1': 0.1, 'tag2': 0.2}},
     }
     await gates_activity.write_metrics(input_data)
     mock_metrics.PREDICTIONS_WRITTEN_COUNT.labels.assert_called_once_with(
@@ -660,3 +661,35 @@ async def test_write_metrics(mock_metrics, gates_activity):
     mock_metrics.PREDICTION_RESPONSE_TIME_MONITOR.labels.return_value.observe.assert_called_once_with(
         0.1
     )
+
+    mock_metrics.PREDICTION_OPC_WRITING_COUNT.labels.assert_has_calls(
+        [
+            call(
+                pod_id=gates_activity.pod_id,
+                model_name=metadata['metadata']['model_name'],
+                pipeline_name=metadata['metadata']['workflow_name'],
+                opc_server_id='server1',
+                tag='tag1',
+            )
+        ]
+    )
+    mock_metrics.PREDICTION_OPC_WRITING_RESPONSE_TIME_MONITOR.labels.assert_has_calls(
+        [
+            call(
+                pod_id=gates_activity.pod_id,
+                model_name=metadata['metadata']['model_name'],
+                pipeline_name=metadata['metadata']['workflow_name'],
+                opc_server_id='server1',
+                tag='tag1',
+            )
+        ]
+    )
+
+    assert mock_metrics.PREDICTION_OPC_WRITING_COUNT.labels.return_value.inc.call_count == 2
+    mock_metrics.PREDICTION_OPC_WRITING_RESPONSE_TIME_MONITOR.labels.return_value.observe.assert_has_calls(
+        [
+            call(0.1),
+            call(0.2),
+        ],
+        any_order=True,
+    )