Simple script to queue Resque worker tasks from the console or command line. Especially useful for cron tasks.

resque

#!/usr/bin/env ruby
#
# Resque Runner
#
# Quickly queue a resque task using the command line. Fast alternative to running
# rake from the crontab, and prevent loading too many rake tasks.
#
# Usage:
#
#   resque queue WorkerClass [arguments]
#
# Example:
#
#   resque standard JourneyWorker send_notifications
# 
# Each argument will be passed to the resque task. Currently, there is no support
# for sending option hashes.
#
# This is a bit of a hack as it does not load Resque. Although unlikely, if the Resque
# project changes, this file will need to be updated.
# 
# The script also makes the assumption that you have a "redis.yml" file in a config
# folder to provide the redis server connection details.
#

require 'redis'
require 'yaml'
require 'json'

path = File.join(File.dirname(__FILE__), '../')
env  = ENV['RAILS_ENV'] || 'development'

host, port, db = YAML.load_file(File.join(path, 'config/redis.yml'))[env].split(':')

# Prepare the redis connection
$redis = Redis.new(:host => host, :port => port, :db => db, :thread_safe => true)

queue  = ARGV.shift
worker = ARGV.shift
args   = ARGV.to_a

if queue.to_s.empty? || worker.to_s.empty?
  puts "Please provide at least the queue and worker!"
  puts
  puts "Usage:"
  puts
  puts "   resque queue WorkerClass [arguments]"
  puts
  puts "Example:"
  puts
  puts "   resque express JourneyWorker send_notifications"
  puts
end

payload = {
  'class' => worker,
  'args'  => args
}

$redis.sadd "resque:queues", queue
$redis.rpush "resque:queue:#{queue}", JSON.dump(payload)

schedule.rb

# Whenever gem example

job_type :resque, "cd :path && RAILS_ENV=:environment bundle exec ./script/resque :task :output"

every 10.minutes do
  resque "standard JourneyWorker send_reservation_notifications"
end