[英]How do you schedule Resque jobs on Heroku?
The rescue-scheduler
gem installation says to create a separate Rake task for scheduling: rescue-scheduler
gem安装说要创建一个单独的Rake任务来调度:
https://github.com/resque/resque-scheduler#rake-integration https://github.com/resque/resque-scheduler#rake-integration
namespace :resque do
task :setup_schedule => :setup do
...
task :scheduler => :setup_schedule
$ rake resque:scheduler
However my Heroku Procfile
already has a worker process to run Resque: 但是我的Heroku Procfile
已经有一个运行Resque的辅助进程:
resque: env TERM_CHILD=1 RESQUE_TERM_TIMEOUT=7 QUEUE=* bundle exec rake resque:work COUNT=1
I don't want to create yet another worker process just to run scheduled jobs. 我不想创建另一个工作进程只是为了运行预定的作业。 This old blog posts says you can set it up without using Rake tasks. 这篇旧的博客文章说,您可以在不使用Rake任务的情况下进行设置。
https://www.perfectline.co/blog/2011/07/cron-tasks-for-your-rails-application-with-resque-2/ https://www.perfectline.co/blog/2011/07/cron-tasks-for-your-rails-application-with-resque-2/
I tried to add multiple dependencies but it gave me a circular dependency error. 我试图添加多个依赖关系,但它给了我一个循环依赖关系错误。
namespace :resque do
task :setup => [:environment, :scheduler]
Console
>env TERM_CHILD=1 RESQUE_TERM_TIMEOUT=7 QUEUE=* bundle exec rake resque:work COUNT=1
rake aborted!
Circular dependency detected: TOP => resque:work => resque:preload => resque:setup => resque:scheduler => resque:setup_schedule => resque:setup
Tasks: TOP => resque:work => resque:preload => resque:setup => resque:scheduler => resque:setup_schedule
This works https://grosser.it/2012/04/14/resque-scheduler-on-heroku-without-extra-workers/ 这有效https://grosser.it/2012/04/14/resque-scheduler-on-heroku-without-extra-workers/
require 'resque/tasks'
require 'resque/scheduler/tasks'
namespace :resque do
desc "schedule and work, so we only need 1 dyno"
task :schedule_and_work do
if Process.respond_to? :fork
if Process.fork
sh "rake environment resque:work"
else
sh "rake resque:scheduler"
Process.wait
end
else # windows
pid = Process.spawn "rake environment resque:work"
Rake::Task["resque:scheduler"].invoke
Process.wait pid
end
end
task :setup => :environment
task :setup_schedule => :setup do
require 'resque-scheduler'
# The schedule doesn't need to be stored in a YAML, it just needs to
# be a hash. YAML is usually the easiest.
# Resque.schedule = YAML.load_file('your_resque_schedule.yml')
Resque.schedule = {merit_rules: {every: '1m', class: 'Merit::ReputationChangeObserver', queue: :badge_queue,
description: 'This job runs Merit\'s rules to award badges.'}}
end
task :scheduler => :setup_schedule
end
And to launch it 并启动它
env TERM_CHILD=1 RESQUE_TERM_TIMEOUT=7 QUEUE=* bundle exec rake resque:schedule_and_work COUNT=1
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