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#!/usr/bin/env ruby
# frozen_string_literal: true
require 'yaml'
MINIMUM_MAX_FILES_IN_CACHE_MARGIN = 1.05
RECOMMENDED_MAX_FILES_IN_CACHE_MARGIN = 1.25
RUBOCOP_LIST_TARGET_FILES_COMMAND = 'bundle exec rubocop --list-target-files | wc -l'
RuboCopMaxFilesInCacheIsTooSmall = Class.new(StandardError)
rubocop_target_files_count = `#{RUBOCOP_LIST_TARGET_FILES_COMMAND}`.strip.to_i
raise Error, "#{RUBOCOP_LIST_TARGET_FILES_COMMAND} failed with status #{$?}!" if rubocop_target_files_count == 0
rubocop_target_files_count = rubocop_target_files_count.to_i
rubocop_current_max_files_in_cache = YAML.load_file(File.expand_path('../.rubocop.yml', __dir__)).dig('AllCops', 'MaxFilesInCache').to_i
minimum_max_files_in_cache = (rubocop_target_files_count * MINIMUM_MAX_FILES_IN_CACHE_MARGIN).round(-3)
# We want AllCops.MaxFilesInCache to be at least 5% above the actual files count at any time to give us enough time to increase it accordingly
if rubocop_current_max_files_in_cache <= minimum_max_files_in_cache
recommended_max_files_in_cache = (rubocop_target_files_count * RECOMMENDED_MAX_FILES_IN_CACHE_MARGIN).round(-3)
raise RuboCopMaxFilesInCacheIsTooSmall, "Current count of RuboCop target file is #{rubocop_target_files_count} but AllCops.MaxFilesInCache is set to #{rubocop_current_max_files_in_cache}. We recommend to increase it to #{recommended_max_files_in_cache}."
else
puts "Current count of RuboCop target file is #{rubocop_target_files_count} and AllCops.MaxFilesInCache is set to #{rubocop_current_max_files_in_cache}. All good."
exit(0)
end
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