80 lines
2.3 KiB
Plaintext
80 lines
2.3 KiB
Plaintext
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= Whenever
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Whenever is a ruby gem that provides a ruby syntax for defining cron jobs. It was designed to work well with Rails applications, but can be used independently as well.
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== Installation
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To install Whenever in a Rails (2.1 or greater) application:
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in your "config/environment.rb" file:
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Rails::Initializer.run do |config|
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config.gem 'javan-whenever', :lib => 'whenever', :source => 'http://gems.github.com'
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end
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To install this gem (and all other missing gem dependencies), run rake gems:install (use sudo if necessary).
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In older versions of Rails:
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$ gem sources -a http://gems.github.com
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$ gem install whenever
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in your "config/environment.rb" file:
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Rails::Initializer.run do |config|
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...
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end
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require "whenever"
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== Getting started
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$ cd /my/rails/app
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$ wheneverize .
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This will create an initial "config/schedule.rb" file you.
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== Example schedule.rb file
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set :runner_path, '/var/www/apps/my_app' # Whenever will try to use your RAILS_ROOT if this isn't set
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set :runner_environment, :production # Whenever defaults to production so only set this if you want to use a different environment.
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set :cron_log, '/path/to/my/cronlog.log' # Where to log (this should NOT be your Rails log)
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every 2.hours do
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runner "MyModel.some_process" # runners are the script/runners you know and love
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command "/usr/local/bin/my_great_command" # commands are any unix command
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end
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every 1.day, :at => '4:30 am' do # If not :at option is set these jobs will run at midnight
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runner "DB.Backup", :cron_log => false # You can specify false for no logging or a string a different log file to override logging.
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end
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every :hour do # Many shortcuts available: :hour, :day, :month, :year, :reboot
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runner "SomeModel.ladeda"
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end
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every :sunday do # Use any day of the week or :weekend, :weekday
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runner "Task.do_something_great"
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end
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== Cron output
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$ cd /my/rails/app
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$ whenever
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And you'll see your schedule.rb converted to cron sytax
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== Capistrano integration
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Use the "whenever:write_cron" task to automatically write your crontab file with each deploy.
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in your "config/deploy.rb" file do something like:
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after "deploy:symlink", "whenever:write_cron"
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THIS WILL COMPLETELY OVERWRITE ANY EXISTING CRONTAB ENTRIES!
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------------------------------------------------------------
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Better documentation on the way!
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