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Commit 21e346e0 authored by Kamil Trzciński's avatar Kamil Trzciński
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Revert "Merge branch 'add-bin-feature-flag' into 'introduce-feature-flag-definition'" 

This reverts merge request !35540
parent fd51a328
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#!/usr/bin/env ruby
#
# Generate a feature flag entry file in the correct location.
#
# Automatically stages the file and amends the previous commit if the `--amend`
# argument is used.
require 'optparse'
require 'yaml'
require 'fileutils'
require 'cgi'
require_relative '../lib/feature/shared' unless defined?(Feature::Shared)
Options = Struct.new(
:name,
:type,
:group,
:ee,
:amend,
:dry_run,
:force,
:introduced_by_url,
:rollout_issue_url
)
module FeatureFlagHelpers
Abort = Class.new(StandardError)
Done = Class.new(StandardError)
def capture_stdout(cmd)
output = IO.popen(cmd, &:read)
fail_with "command failed: #{cmd.join(' ')}" unless $?.success?
output
end
def fail_with(message)
raise Abort, "\e[31merror\e[0m #{message}"
end
end
class FeatureFlagOptionParser
extend FeatureFlagHelpers
extend ::Feature::Shared
class << self
def parse(argv)
options = Options.new
parser = OptionParser.new do |opts|
opts.banner = "Usage: #{__FILE__} [options] <feature-flag>\n\n"
# Note: We do not provide a shorthand for this in order to match the `git
# commit` interface
opts.on('--amend', 'Amend the previous commit') do |value|
options.amend = value
end
opts.on('-f', '--force', 'Overwrite an existing entry') do |value|
options.force = value
end
opts.on('-m', '--introduced-by-url [string]', String, 'URL to Merge Request introducing Feature Flag') do |value|
options.introduced_by_url = value
end
opts.on('-i', '--rollout-issue-url [string]', String, 'URL to Issue rolling out Feature Flag') do |value|
options.rollout_issue_url = value
end
opts.on('-n', '--dry-run', "Don't actually write anything, just print") do |value|
options.dry_run = value
end
opts.on('-g', '--group [string]', String, "The group introducing a feature flag, like: `group::apm`") do |value|
options.group = value if value.start_with?('group::')
end
opts.on('-t', '--type [string]', String, "The category of the feature flag, valid options are: #{TYPES.keys.map(&:to_s).join(', ')}") do |value|
options.type = value.to_sym if TYPES[value.to_sym]
end
opts.on('-e', '--ee', 'Generate a feature flag entry for GitLab EE') do |value|
options.ee = value
end
opts.on('-h', '--help', 'Print help message') do
$stdout.puts opts
raise Done.new
end
end
parser.parse!(argv)
unless argv.one?
$stdout.puts parser.help
$stdout.puts
raise Abort, 'Feature flag name is required'
end
# Name is a first name
options.name = argv.first
options
end
def read_group
$stdout.puts ">> Please specify the group introducing feature flag, like `group::apm`:"
loop do
$stdout.print "\n?> "
group = $stdin.gets.strip
group = nil if group.empty?
return group if group.nil? || group.start_with?('group::')
$stderr.puts "Group needs to include `group::`"
end
end
def read_type
$stdout.puts ">> Please specify the type of your feature flag:"
$stdout.puts
TYPES.each do |type, data|
$stdout.puts "#{type.to_s.rjust(15)}#{' '*6}#{data[:description]}"
end
loop do
$stdout.print "\n?> "
type = $stdin.gets.strip.to_sym
return type if TYPES[type]
$stderr.puts "Invalid type specified '#{type}'"
end
end
def read_issue_url(options)
return unless TYPES.dig(options.type, :rollout_issue)
url = "https://gitlab.com/gitlab-org/gitlab/-/issues/new"
title = "[Feature flag] Rollout of `#{options.name}`"
description = File.read('.gitlab/issue_templates/Feature Flag Roll Out.md')
description.sub!(':feature_name', options.name)
issue_new_url = url + "?" +
"issue[title]=" + CGI.escape(title) + "&"
# TODO: We should be able to pick `issueable_template`
# + "issue[description]=" + CGI.escape(description)
$stdout.puts ">> Open this URL and fill the rest of details:"
$stdout.puts issue_new_url
$stdout.puts
$stdout.puts ">> Paste URL here, or enter to skip:"
loop do
$stdout.print "\n?> "
created_url = $stdin.gets.strip
created_url = nil if created_url.empty?
return created_url if created_url.nil? || created_url.start_with?('https://')
$stderr.puts "URL needs to start with https://"
end
end
end
end
class FeatureFlagCreator
include FeatureFlagHelpers
attr_reader :options
def initialize(options)
@options = options
end
def execute
assert_feature_branch!
assert_name!
assert_existing_feature_flag!
# Read type from $stdin unless is already set
options.type ||= FeatureFlagOptionParser.read_type
options.group ||= FeatureFlagOptionParser.read_group
options.rollout_issue_url ||= FeatureFlagOptionParser.read_issue_url(options)
$stdout.puts "\e[32mcreate\e[0m #{file_path}"
$stdout.puts contents
unless options.dry_run
write
amend_commit if options.amend
end
if editor
system("#{editor} '#{file_path}'")
end
end
private
def contents
YAML.dump(
'name' => options.name,
'introduced_by_url' => options.introduced_by_url,
'rollout_issue_url' => options.rollout_issue_url,
'group' => options.group.to_s,
'type' => options.type.to_s,
'default_enabled' => false
).strip
end
def write
FileUtils.mkdir_p(File.dirname(file_path))
File.write(file_path, contents)
end
def editor
ENV['EDITOR']
end
def amend_commit
fail_with "git add failed" unless system(*%W[git add #{file_path}])
Kernel.exec(*%w[git commit --amend])
end
def assert_feature_branch!
return unless branch_name == 'master'
fail_with "Create a branch first!"
end
def assert_existing_feature_flag!
existing_path = all_feature_flag_names[options.name]
return unless existing_path
return if options.force
fail_with "#{existing_path} already exists! Use `--force` to overwrite."
end
def assert_name!
return if options.name.match(/\A[a-z0-9_-]+\Z/)
fail_with "Provide a name for the feature flag that is [a-z0-9_-]"
end
def file_path
feature_flags_paths.last
.sub('**', options.type.to_s)
.sub('*.yml', options.name + '.yml')
end
def all_feature_flag_names
@all_feature_flag_names ||=
feature_flags_paths.map do |glob_path|
Dir.glob(glob_path).map do |path|
[File.basename(path, '.yml'), path]
end
end.flatten(1).to_h
end
def feature_flags_paths
paths = []
paths << File.join('config', 'feature_flags', '**', '*.yml')
paths << File.join('ee', 'config', 'feature_flags', '**', '*.yml') if ee?
paths
end
def ee?
options.ee
end
def branch_name
@branch_name ||= capture_stdout(%w[git symbolic-ref --short HEAD]).strip
end
end
if $0 == __FILE__
begin
options = FeatureFlagOptionParser.parse(ARGV)
FeatureFlagCreator.new(options).execute
rescue FeatureFlagHelpers::Abort => ex
$stderr.puts ex.message
exit 1
rescue FeatureFlagHelpers::Done
exit
end
end
# vim: ft=ruby
spec/bin/feature_flag_spec.rb deleted 100644 → 0
View file @ fd51a328
# frozen_string_literal: true
require 'spec_helper'
load File.expand_path('../../bin/feature-flag', __dir__)
RSpec.describe 'bin/feature-flag' do
using RSpec::Parameterized::TableSyntax
describe FeatureFlagCreator do
let(:argv) { %w[feature-flag-name -t development -g group::memory -i https://url] }
let(:options) { FeatureFlagOptionParser.parse(argv) }
let(:creator) { described_class.new(options) }
let(:existing_flag) { File.join('config', 'feature_flags', 'development', 'existing-feature-flag.yml') }
before do
# create a dummy feature flag
FileUtils.mkdir_p(File.dirname(existing_flag))
File.write(existing_flag, '{}')
# ignore writes
allow(File).to receive(:write).and_return(true)
# ignore stdin
allow($stdin).to receive(:gets).and_raise('EOF')
# ignore Git commands
allow(creator).to receive(:branch_name) { 'feature-branch' }
end
after do
FileUtils.rm_f(existing_flag)
end
subject { creator.execute }
it 'properly creates a feature flag' do
expect(File).to receive(:write).with(
File.join('config', 'feature_flags', 'development', 'feature-flag-name.yml'),
anything)
expect do
subject
end.to output(/name: feature-flag-name/).to_stdout
end
context 'when running on master' do
it 'requires feature branch' do
expect(creator).to receive(:branch_name) { 'master' }
expect { subject }.to raise_error(FeatureFlagHelpers::Abort, /Create a branch first/)
end
end
context 'validates feature flag name' do
where(:argv, :ex) do
%w[.invalid.feature.flag] | /Provide a name for the feature flag that is/
%w[existing-feature-flag] | /already exists!/
end
with_them do
it do
expect { subject }.to raise_error(ex)
end
end
end
end
describe FeatureFlagOptionParser do
describe '.parse' do
where(:param, :argv, :result) do
:name | %w[foo] | 'foo'
:amend | %w[foo --amend] | true
:force | %w[foo -f] | true
:force | %w[foo --force] | true
:ee | %w[foo -e] | true
:ee | %w[foo --ee] | true
:introduced_by_url | %w[foo -m https://url] | 'https://url'
:introduced_by_url | %w[foo --introduced-by-url https://url] | 'https://url'
:rollout_issue_url | %w[foo -i https://url] | 'https://url'
:rollout_issue_url | %w[foo --rollout-issue-url https://url] | 'https://url'
:dry_run | %w[foo -n] | true
:dry_run | %w[foo --dry-run] | true
:type | %w[foo -t development] | :development
:type | %w[foo --type development] | :development
:type | %w[foo -t invalid] | nil
:type | %w[foo --type invalid] | nil
:group | %w[foo -g group::memory] | 'group::memory'
:group | %w[foo --group group::memory] | 'group::memory'
:group | %w[foo -g invalid] | nil
:group | %w[foo --group invalid] | nil
end
with_them do
it do
options = described_class.parse(Array(argv))
expect(options.public_send(param)).to eq(result)
end
end
it 'missing feature flag name' do
expect do
expect { described_class.parse(%w[--amend]) }.to output(/Feature flag name is required/).to_stdout
end.to raise_error(FeatureFlagHelpers::Abort)
end
it 'parses -h' do
expect do
expect { described_class.parse(%w[foo -h]) }.to output(/Usage:/).to_stdout
end.to raise_error(FeatureFlagHelpers::Done)
end
end
describe '.read_type' do
let(:type) { 'development' }
it 'reads type from $stdin' do
expect($stdin).to receive(:gets).and_return(type)
expect do
expect(described_class.read_type).to eq(:development)
end.to output(/specify the type/).to_stdout
end
context 'invalid type given' do
let(:type) { 'invalid' }
it 'shows error message and retries' do
expect($stdin).to receive(:gets).and_return(type)
expect($stdin).to receive(:gets).and_raise('EOF')
expect do
expect { described_class.read_type }.to raise_error(/EOF/)
end.to output(/specify the type/).to_stdout
.and output(/Invalid type specified/).to_stderr
end
end
end
describe '.read_group' do
let(:group) { 'group::memory' }
it 'reads type from $stdin' do
expect($stdin).to receive(:gets).and_return(group)
expect do
expect(described_class.read_group).to eq('group::memory')
end.to output(/specify the group/).to_stdout
end
context 'invalid group given' do
let(:type) { 'invalid' }
it 'shows error message and retries' do
expect($stdin).to receive(:gets).and_return(type)
expect($stdin).to receive(:gets).and_raise('EOF')
expect do
expect { described_class.read_group }.to raise_error(/EOF/)
end.to output(/specify the group/).to_stdout
.and output(/Group needs to include/).to_stderr
end
end
end
describe '.rollout_issue_url' do
let(:options) { OpenStruct.new(name: 'foo', type: :development) }
let(:url) { 'https://issue' }
it 'reads type from $stdin' do
expect($stdin).to receive(:gets).and_return(url)
expect do
expect(described_class.read_issue_url(options)).to eq('https://issue')
end.to output(/Paste URL here/).to_stdout
end
context 'invalid URL given' do
let(:type) { 'invalid' }
it 'shows error message and retries' do
expect($stdin).to receive(:gets).and_return(type)
expect($stdin).to receive(:gets).and_raise('EOF')
expect do
expect { described_class.read_issue_url(options) }.to raise_error(/EOF/)
end.to output(/Paste URL here/).to_stdout
.and output(/URL needs to start/).to_stderr
end
end
end
end
end
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