Ruby-on-rails 如何在 Active Job (Rails 4.2) 中安排重复作业？
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How do I schedule recurring jobs in Active Job (Rails 4.2)?
提问by luis.madrigal
I found this Schedule one-time jobs in Railsbut this only shows how schedule one-time. I am interested in scheduling a recurring job.
我在 Rails 中找到了这个 Schedule one-time jobs但这仅显示了如何安排一次性工作。我对安排定期工作感兴趣。
Delayed_job has this
Delayed_job 有这个
self.delay(:run_at => 1.minute.from_now)
How do I do something like that in Rails 4.2/Active Job?
我如何在 Rails 4.2/Active Job 中做类似的事情？
回答by omencat
Similar to rab3's answer, since ActiveJob has support for callbacks, I was thinking of doing something like
与 rab3 的回答类似，由于 ActiveJob 支持回调，我正在考虑做类似的事情
class MyJob < ActiveJob::Base
after_perform do |job|
# invoke another job at your time of choice
self.class.set(:wait => 10.minutes).perform_later(job.arguments.first)
end
def perform(the_argument)
# do your thing
end
end
回答by Juanito Fatas
If you want to delay the job execution to 10 minutes later, two options:
如果您想将作业执行延迟到 10 分钟后，有两个选项：
SomeJob.set(wait: 10.minutes).perform_later(record)SomeJob.new(record).enqueue(wait: 10.minutes)
SomeJob.set(wait: 10.minutes).perform_later(record)SomeJob.new(record).enqueue(wait: 10.minutes)
Delay to a specific moment from now use wait_until.
从现在开始延迟到特定时刻使用wait_until。
SomeJob.set(wait_until: Date.tomorrow.noon).perform_later(record)SomeJob.new(record).enqueue(wait_until: Date.tomorrow.noon)
SomeJob.set(wait_until: Date.tomorrow.noon).perform_later(record)SomeJob.new(record).enqueue(wait_until: Date.tomorrow.noon)
Details please refer to http://api.rubyonrails.org/classes/ActiveJob/Base.html.
详情请参考http://api.rubyonrails.org/classes/ActiveJob/Base.html。
For recurring jobs, you just put SomeJob.perform_now(record)in a cronjob (whenever).
对于重复性工作，您只需放入SomeJob.perform_now(record)一个 cronjob（每当）。
If you use Heroku, just put SomeJob.perform_now(record)in a scheduled rake task. Please read more about scheduled rake task here: Heroku scheduler.
如果您使用 Heroku，只需放入 SomeJob.perform_now(record)预定的 rake 任务。请在此处阅读有关预定 rake 任务的更多信息：Heroku scheduler。
回答by rafb3
You can just re-enqueue the job at the end of the execution
您可以在执行结束时重新排队作业
class MyJob < ActiveJob::Base
RUN_EVERY = 1.hour
def perform
# do your thing
self.class.perform_later(wait: RUN_EVERY)
end
end
回答by trans1t
If you're using resque as your ActiveJob backend, you can use a combination of resque-scheduler's Scheduled Jobs and active_scheduler (https://github.com/JustinAiken/active_scheduler, which wraps the scheduled jobs to work properly with ActiveJob).
如果你使用 resque 作为你的 ActiveJob 后端，你可以使用 resque-scheduler 的 Scheduled Jobs 和 active_scheduler 的组合（https://github.com/JustinAiken/active_scheduler，它包装了调度的作业以与 ActiveJob 正常工作）。
