#!/usr/bin/env ruby require 'mail' class DelayedJobErrorChecker def check! errors = Delayed::Job.where("last_error is not null").limit(100).pluck(:last_error).map {|x| x[0..100]} if errors.size == 100 mail = Mail.new do from "webmaster@danbooru.donmai.us" to "r888888888@gmail.com" subject "[danbooru] Delayed job error count at #{errors}" body errors.uniq.join("\n") end mail.delivery_method :sendmail mail.deliver end end end