jobs: migrate file deletion jobs to ActiveJob.

app/jobs/delete_post_files_job.rb

@@ -0,0 +1,8 @@
+class DeletePostFilesJob < ApplicationJob
+  queue_as :default
+  queue_with_priority 20
+
+  def perform(id, md5, file_ext)
+    Post.delete_files(id, md5, file_ext)
+  end
+end

app/jobs/delete_upload_files_job.rb

@@ -0,0 +1,8 @@
+class DeleteUploadFilesJob < ApplicationJob
+  queue_as :default
+  queue_with_priority 20
+
+  def perform(md5, file_ext, upload_id)
+    UploadService::Utils.delete_file(md5, file_ext, upload_id)
+  end
+end

app/logical/upload_service/utils.rb

@@ -166,7 +166,7 @@ class UploadService
 
       # in case this upload never finishes processing, we need to delete the
       # distributed files in the future
-      UploadService::Utils.delay(priority: -1, queue: "default", run_at: 24.hours.from_now).delete_file(upload.md5, upload.file_ext, upload.id)
+      DeleteUploadFilesJob.set(wait: 24.hours).perform_later(upload.md5, upload.file_ext, upload.id)
     end
 
     # these methods are only really used during upload processing even 

app/models/post.rb

@@ -88,7 +88,7 @@ class Post < ApplicationRecord
     end
 
     def queue_delete_files(grace_period)
-      Post.delay(queue: "default", run_at: Time.now + grace_period).delete_files(id, md5, file_ext)
+      DeletePostFilesJob.set(wait: grace_period).perform_later(id, md5, file_ext)
     end
 
     def delete_files