Make GA and GS unique ids functionality

gso/services/subscriptions.py

@@ -19,6 +19,8 @@ from orchestrator.db import (
 from orchestrator.domain import SubscriptionModel
 from orchestrator.services.subscriptions import query_in_use_by_subscriptions
 from orchestrator.types import SubscriptionLifecycle, UUIDstr
+from sqlalchemy import text
+from sqlalchemy.exc import SQLAlchemyError
 
 from gso.products import ProductName, ProductType
 from gso.products.product_types.site import Site
@@ -329,3 +331,39 @@ def is_virtual_circuit_id_available(virtual_circuit_id: str) -> bool:
         True if the virtual circuit ID is unique (not found), False if it exists.
     """
     return is_resource_type_value_unique("virtual_circuit_id", virtual_circuit_id)
+
+
+def make_unique_gs_id() -> str:
+    """Generate a unique GS ID using the gs_id_seq database sequence.
+
+    Returns:
+        str: A unique GS ID in the format `GS-<number>`.
+
+    Raises:
+        ValueError: If there is an error generating the ID.
+    """
+    try:
+        new_id = db.session.execute(text("SELECT nextval('gs_id_seq')")).scalar_one()
+    except SQLAlchemyError as exc:
+        error_message = f"Error generating GS ID: {exc}"
+        raise ValueError(error_message) from exc
+    else:
+        return f"GS-{new_id}"
+
+
+def make_unique_ga_id() -> str:
+    """Generate a unique GA ID using the ga_id_seq database sequence.
+
+    Returns:
+        str: A unique GA ID in the format `GA<number>`.
+
+    Raises:
+        ValueError: If there is an error generating the ID.
+    """
+    try:
+        new_id = db.session.execute(text("SELECT nextval('ga_id_seq')")).scalar_one()
+    except SQLAlchemyError as exc:
+        error_message = f"Error generating GA ID: {exc}"
+        raise ValueError(error_message) from exc
+    else:
+        return f"GA-{new_id}"