SIENTIAPDE-1110

Refactor OpcManager to improve node subscription handling

- Simplified the address node assignment in the OpcManager class by directly using a local variable instead of an instance variable.
- Enhanced debug logging to provide clearer insights into the nodes being subscribed to.

ingestor/managers/opc_manager.py

@@ -157,9 +157,9 @@ class OpcManager():
 
         self.logger.info(f"Subscribing to {subscription} on {self.name}...")
         self.logger.info(f"Subscribing to nodes: {nodes}")
-        self.addr_nodes = [self.client.get_node(
-            n) for n in nodes if n not in self.nodes]
-        self.logger.debug(f"Addr nodes: {self.addr_nodes}")
+        addr_nodes = [self.client.get_node(
+            n) for n in nodes]
+        self.logger.debug(f"Addr nodes: {addr_nodes}")
         self.nodes.update(nodes)
         self.logger.debug(f"Nodes: {self.nodes}")
         metrics.OPC_TAGS_SUBSCRIBED.labels(
@@ -172,7 +172,7 @@ class OpcManager():
                 'cycle_count': 0
             }
 
-        self.subscriptions[subscription].subscribe_data_change(self.addr_nodes)
+        self.subscriptions[subscription].subscribe_data_change(addr_nodes)
 
     def unsubscribe(self, subscription: str):
         """