Request to refactor deletion of extension data

[JohnNiang]

What is version of Halo has the issue?

2.9.0-SNAPSHOT

What database are you using?

H2

What is your deployment method?

Docker

Your site address.

localhost

What happened?

Currently, we use GcReconciler to detect whether extension will be recycled or not. It might not work for extensions created by plugins or after a system restart. So that we have to delete extensions manually.

As a result, we request to refactor GcReconciler to watch extension updates as well to ensure all deletable extensions will be recycled normally.

/kind improvement
/area core
/assign

Relevant log output

{
  "spec": {
    "cronBackupName": "cron-backup-default",
    "backupName": "cron-backup-AUGGW",
    "storagePolicyName": "attachment-policy-HuPYt",
    "storageGroupName": ""
  },
  "status": {
    "startTimestamp": "2023-08-22T08:25:05.103351Z",
    "completionTimestamp": "2023-08-22T08:25:14.823289Z",
    "lastProbeBackupPhase": "SUCCEEDED",
    "phase": "SUCCEEDED",
    "attachmentName": "3aee897f-5828-480f-96bd-0db8f480c6fd"
  },
  "apiVersion": "migration.halo.run/v1alpha1",
  "kind": "Synchronization",
  "metadata": {
    "generateName": "backup-sync-",
    "finalizers": [],
    "name": "backup-sync-NeknA",
    "labels": {
      "migration.halo.run/cron-backup-name": "cron-backup-default"
    },
    "version": 0,
    "creationTimestamp": "2023-08-22T08:25:00.046725Z",
    "deletionTimestamp": "2023-08-22T08:35:00.036002Z"
  }
}

Additional information