You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: job_task.rb
    path of file: ./repos/moebooru/app/models
    
    the code of the file until where you have to start completion: class JobTask < ApplicationRecord
  TASK_TYPES = %w[mass_tag_edit approve_tag_alias approve_tag_implication calculate_tag_subscriptions upload_posts_to_mirrors periodic_maintenance upload_batch_posts update_post_frames]
  STATUSES = %w[pending processing finished error]

  validates_inclusion_of :task_type, in: TASK_TYPES
  validates_inclusion_of :status, in: STATUSES

  def execute!
    if repeat_count > 0
      count = repeat_count - 1
    else
      count = repeat_count
    end

    begin
      execute_sql("SET st
    
  def execute_upload_posts_to_mirrors
    # This is a little counterintuitive: if we're backlogged, mirror newer posts first,
    # since they're the ones that receive the most attention.  Mirror held posts after
    # unheld posts.
    #
    # Apply a limit, so if we're backlogged heavily, we'll only upload a few posts and
    # then give other jobs a chance to run.
    data = {}
    (1..10).each do
      post = Post.where.not(is_warehoused: true, status: "deleted").order(is_held: :asc, index_timestamp: :desc).take
      break unless post

      data["left"] = Post.where.not(is_warehoused: true, status: "deleted").count
      data["post_id"] = post.id
      update(data: data)

      begin
        post.upload_to_mirrors
      ensure
        data["post_id"] = nil
        update(data: data)
      end

      data["left"] = Post.where.not(is_warehoused: true, status: "deleted").count
      update(data: data)
    end