SIENTIAPDE-988

Refactor ingestor lease management and update Docker configurations

- Updated CMD in Dockerfile to use the correct application entry point.
- Added docker compose command to remove volumes in README.
- Removed unnecessary restart policy from ingestor service in docker-compose.yaml.
- Refactored manage_leases method in Ingestor class to improve clarity and parameter naming.
- Added get_number_of_leases method in IngestorManager to retrieve active leases.
- Implemented get_all_leases method in ResourceManager to fetch active leases from Redis.
- Enhanced unit tests for lease management in test_ingestor_manager and test_resource_manager.

ingestor/managers/ingestor_manager.py

@@ -134,6 +134,19 @@ class IngestorManager():
         ingestors = self.resource_manager.get_all_ingestors()
         return ingestors if ingestors else []
 
+    def get_number_of_leases(self) -> int:
+        """
+        Retrieves the number of leases managed by the resource manager.
+        This method fetches all available leases from the resource manager,
+        calculates their count, and updates the `number_of_slots` attribute.
+        Returns:
+            int: The total number of leases. Returns 0 if no leases are available.
+        """
+
+        leases = self.resource_manager.get_all_leases()
+        self.number_of_slots = len(leases) if leases else 0
+        return self.number_of_slots
+
     def get_number_of_slots(self) -> int:
         """
         Retrieves the number of slots managed by the resource manager.

ingestor/managers/resource_manager.py

@@ -117,3 +117,14 @@ class ResourceManager:
         """
 
         return self.redis.keys("slot:opc_tags:*")
+
+    def get_all_leases(self) -> List[str]:
+        """
+        Retrieves all active leases from Redis.
+        This method fetches all keys in Redis that match the pattern for OPC tag leases
+        and returns a list of active leases.
+        Returns:
+            list: A list of active leases.
+        """
+
+        return self.redis.keys("lease:opc_tags:*")