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#!/usr/bin/env ruby
# frozen_string_literal: true
require 'set'
class String
def red
"\e[31m#{self}\e[0m"
end
def yellow
"\e[33m#{self}\e[0m"
end
def green
"\e[32m#{self}\e[0m"
end
def bold
"\e[1m#{self}\e[0m"
end
end
flags_paths = [
'config/feature_flags/**/*.yml'
]
# For EE additionally process `ee/` feature flags
if File.exist?('ee/app/models/license.rb') && !%w[true 1].include?(ENV['FOSS_ONLY'].to_s)
flags_paths << 'ee/config/feature_flags/**/*.yml'
end
all_flags = {}
additional_flags = Set.new
# Iterate all defined feature flags
# to discover which were used
flags_paths.each do |flags_path|
puts flags_path
Dir.glob(flags_path).each do |path|
feature_flag_name = File.basename(path, '.yml')
# TODO: we need a better way of tracking use of Gitaly FF across Gitaly and GitLab
next if feature_flag_name.start_with?('gitaly_')
all_flags[feature_flag_name] = File.exist?(File.join('tmp', 'feature_flags', feature_flag_name + '.used'))
end
end
# Iterate all used feature flags
# to discover which flags are undefined
Dir.glob('tmp/feature_flags/*.used').each do |path|
feature_flag_name = File.basename(path, '.used')
additional_flags.add(feature_flag_name) unless all_flags[feature_flag_name]
end
used_flags = all_flags.select { |name, used| used }
unused_flags = all_flags.reject { |name, used| used }
puts "=========================================".green.bold
puts "Feature Flags usage summary:".green.bold
puts
puts "- #{all_flags.count + additional_flags.count} was found"
puts "- #{unused_flags.count} appear(s) to be UNUSED".yellow
puts "- #{additional_flags.count} appear(s) to be unknown".yellow
puts "- #{used_flags.count} appear(s) to be used".green
puts
if additional_flags.count > 0
puts "==================================================".green.bold
puts "There are feature flags that appears to be unknown".yellow
puts
puts "They appear to be used by CI, but we do lack their YAML definition".yellow
puts "This is likely expected, so feel free to ignore that list:".yellow
puts
additional_flags.sort.each do |name|
puts "- #{name}".yellow
end
puts
end
if unused_flags.count > 0
puts "========================================".green.bold
puts "These feature flags appears to be UNUSED".red.bold
puts
puts "If they are really no longer needed REMOVE their .yml definition".red
puts "If they are needed you need to ENSURE that their usage is covered with specs to continue.".red
puts
unused_flags.keys.sort.each do |name|
puts "- #{name}".yellow
end
puts
puts "Feature flag usage check failed.".red.bold
exit(1)
end
puts "Everything is fine here!".green
puts
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