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module Oxidized
class Jobs < Array
AVERAGE_DURATION = 5 # initially presume nodes take 5s to complete
attr_accessor :interval, :max, :want
def initialize max, interval, nodes
@max = max
@interval = interval
@nodes = nodes
@durations = Array.new @nodes.size, AVERAGE_DURATION
duration AVERAGE_DURATION
super()
end
def duration last
@durations.push(last).shift
@duration = @durations.inject(:+).to_f / @nodes.size #rolling average
new_count
end
def new_count
@want = ((@nodes.size * @duration) / @interval).to_i
@want = 1 if @want < 1
@want = @nodes.size if @want > @nodes.size
@want = @max if @want > @max
end
def add_job
@want += 1
end
end
end
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