SIENTIAPDE-1325

Refactor OpcManager to emit connection metrics after successful connection establishment

- Moved the metric emission for OPC_CONNECTIONS_TOTAL to occur after a successful connection.
- Removed redundant metric increment logic to streamline the connection process.

ingestor/managers/opc_manager.py

@@ -197,15 +197,6 @@ class OpcManager(SientiaMonitoring):
             - OPC_CONNECTION_STATUS: Set to 1 on successful connection
         """
 
-        await self.emit_metric(
-            metric_object=metrics.OPC_CONNECTIONS_TOTAL,
-            method='inc',
-            value=1,
-            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
@@ -230,6 +221,13 @@ 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()