class CreateDelayedJobs < ActiveRecord::Migration[4.2] def self.up create_table :delayed_jobs, force: true do |table| table.integer :priority, default: 0, null: false # Allows some jobs to jump to the front of the queue table.integer :attempts, default: 0, null: false # Provides for retries, but still fail eventually. table.text :handler, null: false # YAML-encoded string of the object that will do work table.text :last_error # reason for last failure (See Note below) table.datetime :run_at # When to run. Could be Time.zone.now for immediately, or sometime in the future. table.datetime :locked_at # Set when a client is working on this object table.datetime :failed_at # Set when all retries have failed (actually, by default, the record is deleted instead) table.string :locked_by # Who is working on this object (if locked) table.string :queue # The name of the queue this job is in table.timestamps null: true end add_index :delayed_jobs, [:priority, :run_at], name: "delayed_jobs_priority" add_index :delayed_jobs, [:queue], :name => "delayed_jobs_queue" end def self.down drop_table :delayed_jobs end end