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65 lines
1.8 KiB
65 lines
1.8 KiB
15 years ago
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class Sample
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attr_reader :time, :speed, :bytesDownloaded, :bytesLeft, :peersTotal
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def Sample.averageSpeed(sample1, sample2)
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if sample2.time - sample1.time > 0
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return (sample1.bytesLeft - sample2.bytesLeft).to_f / (sample2.time - sample1.time).to_f
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else
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return sample1.speed
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end
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end
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def <=>(other)
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@time <=> other.time
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end
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# parses a single sample from a line. Format is
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#
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# \<tt>timestamp,speed,bytesDownloaded,bytesLeft,peersTotal</tt>
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#
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# where
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# - timestamp is in seconds since epoch (Integer)
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# - speed is bytes/seconds as Integer
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# - bytesDownloaded, bytesLeft are bytes as Integer
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# - peersTotal is the number of available peers (both seeders and leecher, both
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# connected and not connected to us)
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def Sample.parse(line)
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splitted = line.split(",")
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# TODO: do better error checking
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return nil if splitted.length != 5
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time = splitted[0].to_i
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speed = splitted[1].to_i
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bytesDownloaded = splitted[2].to_i
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bytesLeft = splitted[3].to_i
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peersTotal = splitted[4].to_i
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return Sample.new(time, speed, bytesDownloaded, bytesLeft, peersTotal)
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end
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# parses samples from a text file, with one sample per line
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def Sample.parseFromFile(filename)
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samples = Hash.new
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input = File.open(filename)
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input.each_line do |line|
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s = Sample.parse(line)
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samples[s.time] = s unless s == nil
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end
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input.close
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return samples
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end
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def initialize(time, speed, bytesDownloaded, bytesLeft, peersTotal)
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@time = time
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@speed = speed
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@bytesDownloaded = bytesDownloaded
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@bytesLeft = bytesLeft
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@peersTotal = peersTotal
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end
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end
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