Check for orphan backups on migration

app/migrations/20240308_multi-backup.py

@@ -13,9 +13,9 @@ from app.classes.shared.file_helpers import FileHelpers
 logger = logging.getLogger(__name__)
 
 
-def is_valid_backup(backup, all_servers):
+def is_valid_entry(entry, all_servers):
     try:
-        return str(backup.server_id) in all_servers
+        return str(entry.server_id) in all_servers
     except (TypeError, peewee.DoesNotExist):
         return False
 
@@ -161,9 +161,14 @@ def migrate(migrator: Migrator, database, **kwargs):
         row.server_id for row in Servers.select(Servers.server_id).distinct()
     ]
     all_backups = Backups.select()
+    all_schedules = Schedules.select()
     Console.info("Cleaning up orphan backups for all servers")
     valid_backups = [
-        backup for backup in all_backups if is_valid_backup(backup, all_servers)
+        backup for backup in all_backups if is_valid_entry(backup, all_servers)
+    ]
+    Console.info("Cleaning up orphan schedules for all servers")
+    valid_schedules = [
+        schedule for schedule in all_schedules if is_valid_entry(schedule, all_servers)
     ]
     # Copy data from the existing backups table to the new one
     for backup in valid_backups:
@@ -221,13 +226,19 @@ def migrate(migrator: Migrator, database, **kwargs):
     Console.debug("Migrations: Dropping backup_path from servers table")
     migrator.drop_columns("servers", ["backup_path"])
 
-    for schedule in Schedules.select():
+    for schedule in valid_schedules:
         action_id = None
         if schedule.command == "backup_server":
             Console.info(
                 f"Migrations: Adding backup ID to task with name {schedule.name}"
             )
+            try:
                 backup = NewBackups.get(NewBackups.server_id == schedule.server_id)
+            except:
+                Console.error(
+                    "Could not find backup with selected server ID. Omitting from register."
+                )
+                continue
             action_id = backup.backup_id
         NewSchedules.create(
             schedule_id=schedule.schedule_id,