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#!/usr/bin/env ruby
##===----------------------------------------------------------------------===##
##
## This source file is part of the SwiftNIO open source project
##
## Copyright (c) 2017-2018 Apple Inc. and the SwiftNIO project authors
## Licensed under Apache License v2.0
##
## See LICENSE.txt for license information
## See CONTRIBUTORS.txt for the list of SwiftNIO project authors
##
## SPDX-License-Identifier: Apache-2.0
##
##===----------------------------------------------------------------------===##
require 'optparse'
METRIC="min" # used for comparison
module Enumerable
def sum
return self.inject(0){|accum, i| accum + i }
end
def mean
return self.sum / self.length.to_f
end
def sample_variance
m = self.mean
sum = self.inject(0){|accum, i| accum + (i - m) ** 2 }
return sum / (self.length - 1).to_f
end
def standard_deviation
return Math.sqrt(self.sample_variance)
end
end
def parse_results(file)
results = {}
File.open(file, "r") do |f|
f.each_line do |line|
parts = line.split(':').collect(&:strip)
throw "invalid data format" unless parts.length == 3
key = parts[1]
values = parts[2].split(',').collect(&:strip).map(&:to_f)
results[key] = {}
results[key]["values"] = values
results[key]["max"] = values.max
results[key]["min"] = values.min
results[key]["mean"] = values.mean
results[key]["std"] = values.standard_deviation
end
end
results
end
def compare_results(current, previous)
results = {}
current.keys.each do |key|
results[key] = {}
results[key]["previous"] = previous[key] || { ::METRIC => "n/a" }
results[key]["current"] = current[key]
if previous[key]
current_value = current[key][::METRIC]
previous_value = previous[key][::METRIC]
delta = current_value - previous_value
results[key]["delta"] = delta
results[key]["winner"] = current_value <= previous_value ? "current" : "previous"
results[key]["diff"] = (delta / previous_value * 100).to_i
else
results[key]["winner"] = "n/a"
results[key]["diff"] = "n/a"
end
end
results
end
def print_results_markdown(results)
columns = ["min", "max", "mean", "std"]
puts "| name | #{columns.join(" | ")} |"
puts "|#{Array.new(columns.size+1, '--').join("|")}|"
results.keys.each do |key|
print "| #{key}"
columns.each do |column|
print " | #{results[key][column]}"
end
puts " |\n"
end
end
def print_results_html(results)
columns = ["min", "max", "mean", "std"]
puts "<table border=\"1\">"
puts "<tr><td>name</td><td>#{columns.join("</td><td>")}</td></tr>"
results.keys.each do |key|
puts "<tr>"
puts "<td>#{key}</td>"
columns.each do |column|
puts "<td>#{results[key][column]}</td>"
end
puts "</tr>"
end
puts "</table>"
end
def print_results_csv(results)
puts results.keys.join(",")
puts results.keys.map{ |key| results[key][::METRIC] }.join(",")
end
def print_comparison_markdown(results)
puts "| name | current | previous | winner | diff |"
puts "|#{Array.new(5, '--').join("|")}|"
results.keys.each do |key|
puts "| #{key} | #{results[key]["current"][::METRIC]} | #{results[key]["previous"][::METRIC]} | #{results[key]["winner"]} | #{results[key]["diff"]}% |"
end
end
def print_comparison_html(results)
puts "<table border=\"1\">"
puts " <tr>
<td>name</td>
<td>current</td>
<td>previous</td>
<td>winner</td>
<td>diff</td>
</tr>"
results.keys.each do |key|
puts " <tr>
<td>#{key}</td>
<td>#{results[key]["current"][::METRIC]}</td>
<td>#{results[key]["previous"][::METRIC]}</td>
<td>#{results[key]["winner"]}</td>
<td>#{results[key]["diff"]}%</td>
</tr>"
end
puts "</table>"
end
ARGV << '-h' if ARGV.empty?
options = {}
OptionParser.new do |opt|
opt.on('-f', '--file file', 'file to process') { |o| options[:file] = o }
opt.on('-p', '--previous previous', 'previous file to process') { |o| options[:previous] = o }
opt.on('-o', '--output output', 'output format') { |o| options[:output] = o }
opt.on_tail("-h", "--help", "show this message") do
puts opt
end
end.parse!
if options.has_key?(:file) && options.has_key?(:previous)
current = parse_results(options[:file])
previous = parse_results(options[:previous])
results = compare_results(current, previous)
case options[:output]
when "html"
print_comparison_html(results)
when "markdown", nil
print_comparison_markdown(results)
else
throw "invalid output format #{options[:output]}"
end
elsif options.has_key?(:file)
results = parse_results(options[:file])
case options[:output]
when "csv"
print_results_csv(results)
when "html", nil
print_results_html(results)
when "markdown", nil
print_results_markdown(results)
else
throw "invalid output format #{options[:output]}"
end
else
throw "invalid arguemnts"
end
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