whenever/lib/job_list.rb

108 lines
2.8 KiB
Ruby

module Whenever
class JobList
def initialize(options)
@jobs = Hash.new
@env = Hash.new
case options
when String
config = options
when Hash
config = if options[:string]
options[:string]
elsif options[:file]
File.read(options[:file])
end
pre_set(options[:set])
end
eval(config)
end
def set(variable, value)
return if instance_variable_defined?("@#{variable}".to_sym)
instance_variable_set("@#{variable}".to_sym, value)
self.class.send(:attr_reader, variable.to_sym)
end
def env(variable, value)
@env[variable.to_s] = value
end
def every(frequency, options = {})
@current_time_scope = frequency
@options = options
yield
end
def command(task, options = {})
options[:cron_log] ||= @cron_log unless options[:cron_log] === false
options[:class] ||= Whenever::Job::Default
@jobs[@current_time_scope] ||= []
@jobs[@current_time_scope] << options[:class].new(@options.merge(:task => task).merge(options))
end
def runner(task, options = {})
options.reverse_merge!(:environment => @environment, :path => @path)
options[:class] = Whenever::Job::Runner
command(task, options)
end
def rake(task, options = {})
options.reverse_merge!(:environment => @environment, :path => @path)
options[:class] = Whenever::Job::RakeTask
command(task, options)
end
def generate_cron_output
[environment_variables, cron_jobs].compact.join
end
private
# Takes a string like: "variable1=something&variable2=somethingelse"
# and breaks it into variable/value pairs. Used for setting variables at runtime from the command line.
# Only works for setting values as strings.
def pre_set(variable_string = nil)
return if variable_string.blank?
pairs = variable_string.split('&')
pairs.each do |pair|
next unless pair.index('=')
variable, value = *pair.split('=')
set(variable.strip, value.strip) unless variable.blank? || value.blank?
end
end
def environment_variables
return if @env.empty?
output = []
@env.each do |key, val|
output << "#{key}=#{val}\n"
end
output << "\n"
output.join
end
def cron_jobs
return if @jobs.empty?
output = []
@jobs.each do |time, jobs|
jobs.each do |job|
cron = Whenever::Output::Cron.output(time, job)
cron << " >> #{job.cron_log} 2>&1" if job.cron_log
cron << "\n\n"
output << cron
end
end
output.join
end
end
end