script/upgrade_to

   1 #!/usr/bin/env ruby
   2
   3 # Standard upgrade command to upgrade the Gitorious installation to a
   4 # newer tagged version.
   5 #
   6 # Usage:
   7 # script/upgrade_to <VERSION_TAG_NAME>
   8 #
   9 # Example:
  10 # script/upgrade_to v2.2.1
  11
  12 # You can determine your current version and the next version by running:
  13 # bundle exec rake versioning:changelog
  14 # This will tell you both your current version and what newer tagged versions exist.
  15
  16 # Note: an undo point is saved each time this command is run, so a
  17 # failed run can be reversed by running script/undo_last_upgrade (note
  18 # that each execution of /upgrade_to overwrites the undo point, so
  19 # only do one upgrade at a time.)
  20
  21 # Assumptions:
  22 # 1: If you are several versions behind, only upgrade one tagged version at a time.
  23 # 2: Always perform a manual, extra backup (/script/snapshot) before attempting an upgrade
  24 # 3: Take the Gitorious installation offline to prevent users from using it while upgrading
  25 # 4: Before going through with the upgrade, check relevant release notes for any breaking changes,
  26 #    (particularly important for any major version upgrades)
  27
  28
  29 if Process.uid != 0
  30   puts "Please run the task as superuser/root!"
  31   exit
  32 end
  33
  34 if !ARGV[0]
  35   puts "Usage:"
  36   puts "script/upgrade_to <tag>"
  37   exit
  38 end
  39
  40 new_tag = ARGV[0]
  41
  42 def backup_db
  43   require_relative '../lib/gitorious/configuration_reader'
  44   conf = Gitorious::ConfigurationReader.read('config/database.yml')
  45   db_name = conf['production']['database']
  46   puts `mysqldump #{db_name} > /tmp/upgrade_db_backup.sql`
  47 end
  48
  49 def backup_working_directory
  50   puts `rm -f /tmp/upgrade_working_dir_backup.tar && tar -czf /tmp/upgrade_working_dir_backup.tar .`
  51 end
  52
  53 def prepare_undo_data
  54   backup_db
  55   backup_working_directory
  56 end
  57
  58 puts "UPGRADE: About to attempt Gitorious upgrade. Please backup first. Proceed with upgrade? (y/n)"
  59 response = $stdin.gets.chomp
  60 if response != "y"
  61   puts "UPGRADE: Quit."
  62   exit
  63 end
  64
  65 puts "UPGRADE: Attempting upgrade to #{new_tag}..."
  66
  67 puts "UPGRADE: Fetching latest Gitorious code from the origin remote (should be gitorious.org)..."
  68 puts `git fetch origin`
  69
  70 puts "UPGRADE: Preparing data needed by script/undo_last_upgrade..."
  71 prepare_undo_data
  72
  73 puts "UPGRADE: Git checking out the '#{new_tag}' tag"
  74 puts `git checkout #{new_tag}`
  75
  76 puts "UPGRADE: Updating submodules..."
  77 puts `git submodule init`
  78
  79 puts "UPGRADE: Upgrading gem dependencies via Bundler..."
  80 puts `bundle install`
  81
  82 puts "UPGRADE: Migrating database..."
  83 puts `env RAILS_ENV=production bundle exec rake db:migrate`
  84
  85 puts "UPGRADE: Clearing asset pipeline..."
  86 puts `env RAILS_ENV=production bundle exec rake assets:clear`
  87
  88 puts "UPGRADE: Restarting Gitorious..."
  89 puts `script/restart`
  90
  91 puts "UPGRADE: Done, upgraded to #{new_tag}."
  92 puts "\nATTENTION: Please test and verify that your site works as expected. If any errors occur, rollback to the pre-upgrade state with script/undo_last_upgrade"