Class: CreateDelayedJobs

Inherits:
Object
  • Object
show all
Defined in:
lib/generators/project/db/migrate/78_create_delayed_jobs.rb

Class Method Summary collapse

Class Method Details

.down ⇒ Object 



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# File 'lib/generators/project/db/migrate/78_create_delayed_jobs.rb', line 19

def self.down
  drop_table :delayed_jobs
end

.up ⇒ Object 



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# File 'lib/generators/project/db/migrate/78_create_delayed_jobs.rb', line 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"
end