Move Settings to its own file, isolate it from Rails and introduce Gitlab.root

Signed-off-by: Rémy Coutable <remy@rymai.me>

config/initializers/1_settings.rb

-# rubocop:disable GitlabSecurity/PublicSend
-
-require_dependency Rails.root.join('lib/gitlab') # Load Gitlab as soon as possible
-
-class Settings < Settingslogic
-  source ENV.fetch('GITLAB_CONFIG') { "#{Rails.root}/config/gitlab.yml" }
-  namespace Rails.env
-
-  class << self
-    def gitlab_on_standard_port?
-      on_standard_port?(gitlab)
-    end
-
-    def host_without_www(url)
-      host(url).sub('www.', '')
-    end
-
-    def build_gitlab_ci_url
-      custom_port =
-        if on_standard_port?(gitlab)
-          nil
-        else
-          ":#{gitlab.port}"
-        end
-
-      [
-        gitlab.protocol,
-        "://",
-        gitlab.host,
-        custom_port,
-        gitlab.relative_url_root
-      ].join('')
-    end
-
-    def build_pages_url
-      base_url(pages).join('')
-    end
-
-    def build_gitlab_shell_ssh_path_prefix
-      user_host = "#{gitlab_shell.ssh_user}@#{gitlab_shell.ssh_host}"
-
-      if gitlab_shell.ssh_port != 22
-        "ssh://#{user_host}:#{gitlab_shell.ssh_port}/"
-      else
-        if gitlab_shell.ssh_host.include? ':'
-          "[#{user_host}]:"
-        else
-          "#{user_host}:"
-        end
-      end
-    end
-
-    def build_base_gitlab_url
-      base_url(gitlab).join('')
-    end
-
-    def build_gitlab_url
-      (base_url(gitlab) + [gitlab.relative_url_root]).join('')
-    end
-
-    # check that values in `current` (string or integer) is a contant in `modul`.
-    def verify_constant_array(modul, current, default)
-      values = default || []
-      unless current.nil?
-        values = []
-        current.each do |constant|
-          values.push(verify_constant(modul, constant, nil))
-        end
-        values.delete_if { |value| value.nil? }
-      end
-
-      values
-    end
-
-    # check that `current` (string or integer) is a contant in `modul`.
-    def verify_constant(modul, current, default)
-      constant = modul.constants.find { |name| modul.const_get(name) == current }
-      value = constant.nil? ? default : modul.const_get(constant)
-      if current.is_a? String
-        value = modul.const_get(current.upcase) rescue default
-      end
-
-      value
-    end
-
-    def absolute(path)
-      File.expand_path(path, Rails.root)
-    end
-
-    private
-
-    def base_url(config)
-      custom_port = on_standard_port?(config) ? nil : ":#{config.port}"
-
-      [
-        config.protocol,
-        "://",
-        config.host,
-        custom_port
-      ]
-    end
-
-    def on_standard_port?(config)
-      config.port.to_i == (config.https ? 443 : 80)
-    end
-
-    # Extract the host part of the given +url+.
-    def host(url)
-      url = url.downcase
-      url = "http://#{url}" unless url.start_with?('http')
-
-      # Get rid of the path so that we don't even have to encode it
-      url_without_path = url.sub(%r{(https?://[^/]+)/?.*}, '\1')
-
-      URI.parse(url_without_path).host
-    end
-
-    # Runs every minute in a random ten-minute period on Sundays, to balance the
-    # load on the server receiving these pings. The usage ping is safe to run
-    # multiple times because of a 24 hour exclusive lock.
-    def cron_for_usage_ping
-      hour = rand(24)
-      minute = rand(6)
-
-      "#{minute}0-#{minute}9 #{hour} * * 0"
-    end
-  end
-end
+require_dependency File.expand_path('../../lib/gitlab', __dir__) # Load Gitlab as soon as possible
+require_dependency File.expand_path('../../lib/settings', __dir__) # Load Settings as soon as possible
 
 # Default settings
 Settings['ldap'] ||= Settingslogic.new({})

config/initializers/2_app.rb

@@ -5,6 +5,6 @@ module Gitlab
     Settings
   end
 
-  VERSION  = File.read(Rails.root.join("VERSION")).strip.freeze
+  VERSION  = File.read(Gitlab.root.join("VERSION")).strip.freeze
   REVISION = Gitlab::Popen.popen(%W(#{config.git.bin_path} log --pretty=format:%h -n 1)).first.chomp.freeze
 end

lib/gitlab.rb

@@ -5,6 +5,10 @@ module Gitlab
   APP_DIRS_PATTERN = %r{^/?(app|config|ee|lib|spec|\(\w*\))}
   SUBDOMAIN_REGEX = %r{\Ahttps://[a-z0-9]+\.gitlab\.com\z}
 
+  def self.root
+    Pathname.new(File.expand_path('..', __dir__))
+  end
+
   def self.com?
     # Check `gl_subdomain?` as well to keep parity with gitlab.com
     Gitlab.config.gitlab.url == COM_URL || gl_subdomain?

lib/settings.rb

+require_dependency 'gitlab'
+
+class Settings < Settingslogic
+  source ENV.fetch('GITLAB_CONFIG') { Gitlab.root.join('config/gitlab.yml') }
+  namespace ENV.fetch('GITLAB_ENV') { Rails.env }
+
+  class << self
+    def gitlab_on_standard_port?
+      on_standard_port?(gitlab)
+    end
+
+    def host_without_www(url)
+      host(url).sub('www.', '')
+    end
+
+    def build_gitlab_ci_url
+      custom_port =
+        if on_standard_port?(gitlab)
+          nil
+        else
+          ":#{gitlab.port}"
+        end
+
+      [
+        gitlab.protocol,
+        "://",
+        gitlab.host,
+        custom_port,
+        gitlab.relative_url_root
+      ].join('')
+    end
+
+    def build_pages_url
+      base_url(pages).join('')
+    end
+
+    def build_gitlab_shell_ssh_path_prefix
+      user_host = "#{gitlab_shell.ssh_user}@#{gitlab_shell.ssh_host}"
+
+      if gitlab_shell.ssh_port != 22
+        "ssh://#{user_host}:#{gitlab_shell.ssh_port}/"
+      else
+        if gitlab_shell.ssh_host.include? ':'
+          "[#{user_host}]:"
+        else
+          "#{user_host}:"
+        end
+      end
+    end
+
+    def build_base_gitlab_url
+      base_url(gitlab).join('')
+    end
+
+    def build_gitlab_url
+      (base_url(gitlab) + [gitlab.relative_url_root]).join('')
+    end
+
+    # check that values in `current` (string or integer) is a contant in `modul`.
+    def verify_constant_array(modul, current, default)
+      values = default || []
+      unless current.nil?
+        values = []
+        current.each do |constant|
+          values.push(verify_constant(modul, constant, nil))
+        end
+        values.delete_if { |value| value.nil? }
+      end
+
+      values
+    end
+
+    # check that `current` (string or integer) is a contant in `modul`.
+    def verify_constant(modul, current, default)
+      constant = modul.constants.find { |name| modul.const_get(name) == current }
+      value = constant.nil? ? default : modul.const_get(constant)
+      if current.is_a? String
+        value = modul.const_get(current.upcase) rescue default
+      end
+
+      value
+    end
+
+    def absolute(path)
+      File.expand_path(path, Rails.root)
+    end
+
+    private
+
+    def base_url(config)
+      custom_port = on_standard_port?(config) ? nil : ":#{config.port}"
+
+      [
+        config.protocol,
+        "://",
+        config.host,
+        custom_port
+      ]
+    end
+
+    def on_standard_port?(config)
+      config.port.to_i == (config.https ? 443 : 80)
+    end
+
+    # Extract the host part of the given +url+.
+    def host(url)
+      url = url.downcase
+      url = "http://#{url}" unless url.start_with?('http')
+
+      # Get rid of the path so that we don't even have to encode it
+      url_without_path = url.sub(%r{(https?://[^/]+)/?.*}, '\1')
+
+      URI.parse(url_without_path).host
+    end
+
+    # Runs every minute in a random ten-minute period on Sundays, to balance the
+    # load on the server receiving these pings. The usage ping is safe to run
+    # multiple times because of a 24 hour exclusive lock.
+    def cron_for_usage_ping
+      hour = rand(24)
+      minute = rand(6)
+
+      "#{minute}0-#{minute}9 #{hour} * * 0"
+    end
+  end
+end

spec/fast_spec_helper.rb

@@ -2,8 +2,9 @@ require 'bundler/setup'
 
 require 'settingslogic'
 
-ENV["RAILS_ENV"] = 'test'
-ENV["IN_MEMORY_APPLICATION_SETTINGS"] = 'true'
+ENV['GITLAB_ENV'] = 'test'
+ENV['RAILS_ENV'] = 'test'
+ENV['IN_MEMORY_APPLICATION_SETTINGS'] = 'true'
 
 unless Kernel.respond_to?(:require_dependency)
   module Kernel
@@ -11,27 +12,9 @@ unless Kernel.respond_to?(:require_dependency)
   end
 end
 
-unless defined?(Rails)
-  module Rails
-    def self.root
-      Pathname.new(File.expand_path(''))
-    end
-
-    # Copied from https://github.com/rails/rails/blob/v4.2.10/railties/lib/rails.rb#L59-L61
-    def self.env
-      @_env ||= ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development")
-    end
-  end
-end
-
-# Settings is used in config/initializers/2_app.rb
-class Settings < Settingslogic
-  source Rails.root.join('config/gitlab.yml')
-  namespace Rails.env
-end
-
-# Defines Gitlab and Gitlab.config
+# Defines Gitlab and Gitlab.config which are at the center of the app
 unless defined?(Gitlab) && Gitlab.respond_to?(:config)
+  require_relative '../lib/settings'
   require_relative '../config/initializers/2_app'
 end
 

spec/lib/gitlab_spec.rb

@@ -3,6 +3,12 @@ require 'fast_spec_helper'
 require_dependency 'gitlab'
 
 describe Gitlab do
+  describe '.root' do
+    it 'returns the root path of the app' do
+      expect(described_class.root).to eq(Pathname.new(File.expand_path('../..', __dir__)))
+    end
+  end
+
   describe '.com?' do
     it 'is true when on GitLab.com' do
       stub_config_setting(url: 'https://gitlab.com')