delayed_job_recurring

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delayed_job_recurring

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Extends delayed_job to support recurring jobs

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# delayed\_job\_recurring
[![Build Status](https://travis-ci.org/amitree/delayed_job_recurring.svg)](https://travis-ci.org/amitree/delayed_job_recurring)

Extends delayed\_job to support recurring jobs.

## Usage

Add it to your Gemfile:

```ruby
gem 'delayed_job_recurring'
```

Then define a task class.  We like the concept of
[interactors](http://eng.joingrouper.com/blog/2014/03/03/rails-the-missing-parts-interactors),
so we put our task classes in `app/interactors`.  You could also put them in `lib` or even `app/models`.

```ruby
class MyTask
  include Delayed::RecurringJob
  run_every 1.day
  run_at '11:00am'
  timezone 'US/Pacific'
  queue 'slow-jobs'
  def perform
    # Do some work here!
  end
end
```

Finally, schedule it:

```ruby
MyTask.schedule! # run every day at 11am Pacific time (accounting for daylight savings)
```

The best practice is to add your `MyTask.schedule!` lines to a rake file, e.g.

```ruby
# lib/tasks/recurring_jobs.rake

namespace :recurring do
  task init: :environment do
    MyTask.schedule!
    MyOtherTask.schedule!

if Rails.env.production?
      MyProductionOnlyTask.schedule!
    end
  end
end
```

and invoke this job by running `rake recurring:init` on each deployment.

Alternatively, if your app only has one instance running, you can put your
`schedule!` calls into an initializer, and then your jobs will be automatically
scheduled when your app starts. However, if you have more than one instance of
your app running in production, this will lead to a race condition and you will
end up with duplicate recurring jobs in the queue.

## ActiveJob

Note: your task class should **not** inherit from ActiveJob::Base.

## Advanced usage

### Passing options to schedule

```ruby
MyTask.schedule(run_at: '12:00')
```

### Running at multiples times each day

```ruby
MyTask.schedule(run_every: 1.day, run_at: ['11:00', '6:00pm'])
```

### Running on specific days of the week

```ruby
MyTask.schedule(run_every: 1.week, run_at: ['sunday 8:00am', 'wednesday 8:00am'])
```

### Scheduling multiple jobs of same class

By default, before scheduling a new job, the old jobs scheduled with the same class will be unscheduled.

To schedule multiple jobs with same class, pass an unique matching param `job_matching_param` and value for that matching param in each job as below:

```ruby
MyTask.schedule(run_at: '12:00', job_matching_param: 'schedule_id', schedule_id: 2)
```

This allows you to schedule multiple jobs with same class if value of the unique matching param(which is `schedule_id` in above example) is different in each job.

## Thanks!

Many thanks to @ginjo and @kares for their work!  This code was derived from https://gist.github.com/ginjo/3688965.

## Contributing

[![Open Source Helpers](https://www.codetriage.com/amitree/delayed_job_recurring/badges/users.svg)](https://www.codetriage.com/amitree/delayed_job_recurring)

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