Orphan Cleanup Service

Remove entities no longer in manifest

  class OrphanCleanup
    def cleanup(manifest)
      external_file_ids = manifest.dig_all("providers", "topics", "files", "id")
      external_topic_ids = manifest.dig_all("providers", "topics", "id")
      external_provider_ids = manifest["providers"].pluck("id")
      external_tag_ids = manifest["tags"].pluck("id")

      # ActiveStorage will purge attached blobs automatically
      TopicFile.where.not(external_id: external_file_ids).destroy_all
      Topic.where.not(external_id: external_topic_ids).destroy_all
      ContentProvider.where.not(external_id: external_provider_ids).destroy_all
      Tag.where.not(external_id: external_tag_ids).destroy_all
    end
  end

Locate the OrphanCleanup class and the code that supplies its manifest, then read how the provider, topic, file, and tag records are persisted. Verify the cleanup behavior against a manifest containing missing entities and confirm that records absent from the manifest are removed without affecting retained entities.