132 lines
3.9 KiB
Ruby
132 lines
3.9 KiB
Ruby
module Whenever
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module Output
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class Cron
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attr_accessor :time, :task
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def initialize(time = nil, task = nil, at = nil)
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@time = time
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@task = task
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@at = at.is_a?(String) ? (Chronic.parse(at) || 0) : (at || 0)
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end
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def self.enumerate(item)
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if item and item.is_a?(String)
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items = item.split(',')
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else
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items = item
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items = [items] unless items and items.respond_to?(:each)
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end
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items
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end
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def self.output(times, job)
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enumerate(times).each do |time|
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enumerate(job.at).each do |at|
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out = new(time, job.output, at)
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yield "#{out.time_in_cron_syntax} #{out.task}"
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end
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end
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end
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def time_in_cron_syntax
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case @time
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when Symbol then parse_symbol
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when String then parse_as_string
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else parse_time
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end
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end
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protected
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def parse_symbol
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shortcut = case @time
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when :reboot then '@reboot'
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when :year, :yearly then '@annually'
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when :day, :daily then '@daily'
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when :midnight then '@midnight'
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when :month, :monthly then '@monthly'
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when :week, :weekly then '@weekly'
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when :hour, :hourly then '@hourly'
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end
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if shortcut
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if @at > 0
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raise ArgumentError, "You cannot specify an ':at' when using the shortcuts for times."
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else
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return shortcut
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end
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else
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parse_as_string
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end
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end
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def parse_time
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timing = Array.new(5, '*')
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case @time
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when 0.seconds...1.minute
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raise ArgumentError, "Time must be in minutes or higher"
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when 1.minute...1.hour
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minute_frequency = @time / 60
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timing[0] = comma_separated_timing(minute_frequency, 59)
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when 1.hour...1.day
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hour_frequency = (@time / 60 / 60).round
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timing[0] = @at.is_a?(Time) ? @at.min : @at
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timing[1] = comma_separated_timing(hour_frequency, 23)
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when 1.day...1.month
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day_frequency = (@time / 24 / 60 / 60).round
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timing[0] = @at.is_a?(Time) ? @at.min : 0
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timing[1] = @at.is_a?(Time) ? @at.hour : @at
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timing[2] = comma_separated_timing(day_frequency, 31, 1)
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when 1.month..12.months
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month_frequency = (@time / 30 / 24 / 60 / 60).round
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timing[0] = @at.is_a?(Time) ? @at.min : 0
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timing[1] = @at.is_a?(Time) ? @at.hour : 0
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timing[2] = @at.is_a?(Time) ? @at.day : (@at.zero? ? 1 : @at)
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timing[3] = comma_separated_timing(month_frequency, 12, 1)
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else
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return parse_as_string
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end
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timing.join(' ')
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end
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def parse_as_string
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return unless @time
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string = @time.to_s
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timing = Array.new(4, '*')
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timing[0] = @at.is_a?(Time) ? @at.min : 0
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timing[1] = @at.is_a?(Time) ? @at.hour : 0
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return (timing << '1-5') * " " if string.downcase.index('weekday')
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return (timing << '6,0') * " " if string.downcase.index('weekend')
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%w(sun mon tue wed thu fri sat).each_with_index do |day, i|
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return (timing << i) * " " if string.downcase.index(day)
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end
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raise ArgumentError, "Couldn't parse: #{@time}"
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end
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def comma_separated_timing(frequency, max, start = 0)
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return start if frequency.blank? || frequency.zero?
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return '*' if frequency == 1
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return frequency if frequency > (max * 0.5).ceil
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original_start = start
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start += frequency unless (max + 1).modulo(frequency).zero? || start > 0
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output = (start..max).step(frequency).to_a
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max_occurances = (max.to_f / (frequency.to_f)).round
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max_occurances += 1 if original_start.zero?
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output[0, max_occurances].join(',')
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end
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end
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end
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end
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