78 lines
2.3 KiB
Ruby
78 lines
2.3 KiB
Ruby
module Rubella
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module Weighting
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# The Rubella::Weighting object processes the given input data to an valid
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# output processable Array.
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# These arrays contain a subarray for every unit of time. And these Array
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# contain the buckets within the values for the output objects.
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# The Weighting of the print intensitiy is done here, so that the output
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# objects job is simply to print the stuff.
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#
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# The Rubella::Weighting::PerValue object weights every bucket set to 1 in
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# ammount. So if you have have for example four cores, every core is
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# weighted to 0.25 no matter how much the load of a single core is. It's
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# just a "as is" weighting.
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class PerValue
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attr_reader :buckets
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# :steps
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# Constructor
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# Creates a new Rubella::Weighting::PerValue object.
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#
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# @param buckets int must be one of 1, 2, 5, 10, 20, 50 default is 10
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# @return Rubella::Weighting::PerValue
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# @raise ArgumentError
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def initialize(buckets = 10)
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self.buckets = buckets
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end
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# Creates a output readable list.
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# This list is Array within a subarrays, which contain the buckets for
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# every time value unit.
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#
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# @param input Rubella::Input An input object
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# @return Array
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def parse input
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data = input.data
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# no data, no work
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return [] if data.length == 0
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# total amount of cores
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total_amount = data[0].length
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# TODO check somewhere, if every dataset has the same amount of cores
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# prepare data
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data_list = Array.new()
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data.each do |cores|
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# every 10 load percent one heatpoint
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i = 0
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data_list << Array.new(buckets) do
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amount = cores.select { |core| core >= i and core < (i+@steps)}.length
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i = i + @steps
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amount.to_f/total_amount
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end
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end
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data_list
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end
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# Sets the buckets, if the value is valid
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#
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# @param buckets int The amount of buckets
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# @raise ArgumentError
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def buckets= buckets
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# Must be divideable by 100
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if([1, 2, 5, 10, 20, 50].index(buckets) == nil)
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raise ArgumentError, "Amount of buckets must be 1, 2, 5, 10, 20 or 50"
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end
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@steps = 100/buckets
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@buckets = buckets
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end
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end
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end
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end
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