1 files changed, 66 insertions, 0 deletions
diff --git a/scripts/pipeline/average_reports.rb b/scripts/pipeline/average_reports.rb
new file mode 100755
index 00000000000..d628ddfbf66
--- /dev/null
+++ b/scripts/pipeline/average_reports.rb
@@ -0,0 +1,66 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require 'json'
+require 'optparse'
+
+class AverageReports
+  attr_reader :initial_report_file, :initial_report_data, :report_file_to_data_map
+
+  def initialize(initial_report_file:, new_report_files:)
+    @initial_report_file = initial_report_file
+    @initial_report_data = parse_json_from_report_file(initial_report_file)
+
+    @report_file_to_data_map = new_report_files.each_with_object({}) do |report_file, map|
+      next unless File.exist?(report_file)
+
+      map[report_file] ||= parse_json_from_report_file(report_file)
+    end
+  end
+
+  def execute
+    puts "Updating #{initial_report_file} with #{report_file_to_data_map.size} new reports..."
+
+    compound_reports = report_file_to_data_map.keys.each_with_object({}) do |report_file, result|
+      report = report_file_to_data_map[report_file]
+
+      report.each do |spec, duration|
+        result[spec] ||= [*initial_report_data[spec]]
+        result[spec] << duration
+      end
+
+      puts "Updated #{report.size} data points from #{report_file}"
+    end
+
+    averaged_reports = compound_reports.transform_values do |durations|
+      durations.sum.to_f / durations.size
+    end
+
+    File.write(initial_report_file, JSON.pretty_generate(averaged_reports))
+    puts "Saved #{initial_report_file}."
+
+    averaged_reports
+  end
+
+  private
+
+  def parse_json_from_report_file(report_file)
+    JSON.parse(File.read(report_file))
+  end
+end
+
+if $PROGRAM_NAME == __FILE__
+  options = {}
+
+  OptionParser.new do |opts|
+    opts.on("-i", "--initial-report initial_report_file", String, 'Initial report file name') do |value|
+      options[:initial_report_file] = value
+    end
+
+    opts.on("-n", "--new-reports new_report_files", Array, 'New report file names delimited by ","') do |values|
+      options[:new_report_files] = values
+    end
+  end.parse!
+
+  AverageReports.new(**options).execute
+end