github-migration/whenever
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Javan Makhmali 2009-02-16 17:08:15 -08:00
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== Introduction
Whenever is a ruby gem that provides a ruby syntax for defining cron jobs. It is designed to work well with Rails applications, but can be used independently as well.
Whenever is a ruby gem that provides a ruby syntax for defining cron jobs. It outputs valid cron syntax and can even write your crontab file for you. It is designed to work well with Rails applications and can be deployed with Capistrano. Whenever works fine independently as well.
== Installation
NOTE: Requiring the whenever gem inside your Rails application is technically optional. However, if you plan to use something like Capistrano to automatically deploy and write your crontab file, you'll need to have the gem installed on your servers, and requiring it in your app is one to ensure this. If you plan to manually install the gem on your servers or you don't care about Rails, deploying, etc., you can skip the next step.
Regular (non-Rails) install:
To install Whenever in a Rails (2.1 or greater) application:
$ gem sources -a http://gems.github.com (you only need to run this once)
$ sudo gem install javan-whenever
In a Rails (2.1 or greater) application:
in your "config/environment.rb" file:
Rails::Initializer.run do |config|
config.gem 'javan-whenever', :lib => 'whenever', :source => 'http://gems.github.com'
config.gem 'javan-whenever', :lib => false, :version => '>= 0.1.1' :source => 'http://gems.github.com'
end
To install this gem (and all other missing gem dependencies), run rake gems:install (use sudo if necessary).
@ -27,7 +30,9 @@ in your "config/environment.rb" file:
...
end
require "whenever"
require 'whenever'
NOTE: Requiring the whenever gem inside your Rails application is technically optional. However, if you plan to use something like Capistrano to automatically deploy and write your crontab file, you'll need to have the gem installed on your servers, and requiring it in your app is one to ensure this.
== Getting started
@ -45,15 +50,15 @@ This will create an initial "config/schedule.rb" file you.
every 2.hours do
runner "MyModel.some_process" # runners are the script/runners you know and love
rake "my:rake:task" # conveniently run rake tasks
command "/usr/local/bin/my_great_command" # commands are any unix command
command "/usr/bin/my_great_command" # commands are any unix command
end
every 1.day, :at => '4:30 am' do # If not :at option is set these jobs will run at midnight
runner "DB.Backup", :cron_log => false # You can specify false for no logging or a string a different log file to override logging.
runner "DB.Backup", :cron_log => false # You can specify false for no logging or a string with a different log file to override any global logging.
end
every :hour do # Many shortcuts available: :hour, :day, :month, :year, :reboot
runner "SomeModel.ladeda"
runner "SomeModel.ladeeda"
end
every :sunday do # Use any day of the week or :weekend, :weekday