Rails cron with whenever, setting the environment

Question

This question will probably only make sense if you know about the whenever gem for creating cron jobs. I have a task in my schedule.rb like

every 1.day, :at =&g         


        

Answer 1

I would consider using the "rake" shortcut to make it even cleaner:

every 1.day, :at => '4am' do
  rake "thinking_sphinx:stop"
  rake "thinking_sphinx:index"
  rake "thinking_sphinx:start"
end

Answer 2

Latest whenever allows easy Capistrano integration. You can add following to deploy.rb:

set :whenever_environment, defer { stage }
set :whenever_identifier, defer { "#{application}-#{stage}" }

require "whenever/capistrano"

Answer 3

This questions has been open a long time so I thought I would share what worked with whenever 0.9.7, Ruby 2.4.0, and RAILS 5.0.1. In the previously mentioned answer there are a lot of close tries but syntax error plagues them. Below is what worked and is very simple approach.

schedule.rb

require File.expand_path(File.dirname(__FILE__) + '/environment')
set :output, {:standard => 'log/cron_log.log', :error => 'log/cron_error_log.log'}
env :PATH, ENV['PATH']

every :day, :at => '10am' do
     rake "somejob:run", :environment => @environment
end

Update the crontab(dev)

whenever --set 'environment=development' --update-crontab

Results(dev)

0 10 * * * /bin/bash -l -c 'cd /my/rails/app && RAILS_ENV=development bundle exec rake somejob:run --silent >> log/cron_log.log 2>> log/cron_error_log.log'

Update the crontab(prod)

whenever --set 'environment=production' --update-crontab

Results(prod)

0 10 * * * /bin/bash -l -c 'cd /my/rails/app && RAILS_ENV=production bundle exec rake somejob:run --silent >> log/cron_log.log 2>> log/cron_error_log.log'

Hopefully this can help someone out. Happy Coding this!

Answer 4

For Whenever (0.9.2)

Use the @environment variable for environment check:

case @environment

when 'production'

every 1.minutes do

   rake "user:take_sample"

  end

when 'development'

every 1.minutes do

  rake "user:dev_sample"

  end

end