SIENTIAPDE-1325

Refactor OpcManager to emit connection metrics immediately after connection attempt

- Moved the emission of OPC_CONNECTIONS_TOTAL metric to occur right after the connection attempt, ensuring accurate tracking of connection status.
- Removed redundant metric emission logic that was previously placed after a successful connection.

ingestor/managers/opc_manager.py

@@ -197,6 +197,13 @@ class OpcManager(SientiaMonitoring):
             - OPC_CONNECTION_STATUS: Set to 1 on successful connection
         """
 
+        await self.emit_metric(
+            metric_object=metrics.OPC_CONNECTIONS_TOTAL,
+            tags={
+                'pod_id': self.pod_id,
+                'server_name': self.name,
+            }
+        )
         try:
             self.client = Client(self.url, timeout=10, watchdog_intervall=3600000)
             assert self.client is not None  # Informa ao mypy que client não é None
@@ -221,13 +228,6 @@ class OpcManager(SientiaMonitoring):
                     'server_url': self.url,
                 },
             )
-            await self.emit_metric(
-                metric_object=metrics.OPC_CONNECTIONS_TOTAL,
-                tags={
-                    'pod_id': self.pod_id,
-                    'server_name': self.name,
-                }
-            )
             self.logger.info(f'Connection to {self.name} successful.')
         except Exception:
             await self.disconnect()