gitlab-org--gitlab-foss/lib/backup/manager.rb
2018-10-05 19:34:22 +05:30

251 lines
7.9 KiB
Ruby

# frozen_string_literal: true
module Backup
class Manager
ARCHIVES_TO_BACKUP = %w[uploads builds artifacts pages lfs registry].freeze
FOLDERS_TO_BACKUP = %w[repositories db].freeze
FILE_NAME_SUFFIX = '_gitlab_backup.tar'.freeze
attr_reader :progress
def initialize(progress)
@progress = progress
end
def pack
# Make sure there is a connection
ActiveRecord::Base.connection.reconnect!
Dir.chdir(backup_path) do
File.open("#{backup_path}/backup_information.yml", "w+") do |file|
file << backup_information.to_yaml.gsub(/^---\n/, '')
end
# create archive
progress.print "Creating backup archive: #{tar_file} ... "
# Set file permissions on open to prevent chmod races.
tar_system_options = { out: [tar_file, 'w', Gitlab.config.backup.archive_permissions] }
if Kernel.system('tar', '-cf', '-', *backup_contents, tar_system_options)
progress.puts "done".color(:green)
else
puts "creating archive #{tar_file} failed".color(:red)
raise Backup::Error, 'Backup failed'
end
upload
end
end
def upload
progress.print "Uploading backup archive to remote storage #{remote_directory} ... "
connection_settings = Gitlab.config.backup.upload.connection
if connection_settings.blank?
progress.puts "skipped".color(:yellow)
return
end
directory = connect_to_remote_directory(connection_settings)
if directory.files.create(key: remote_target, body: File.open(tar_file), public: false,
multipart_chunk_size: Gitlab.config.backup.upload.multipart_chunk_size,
encryption: Gitlab.config.backup.upload.encryption,
storage_class: Gitlab.config.backup.upload.storage_class)
progress.puts "done".color(:green)
else
puts "uploading backup to #{remote_directory} failed".color(:red)
raise Backup::Error, 'Backup failed'
end
end
def cleanup
progress.print "Deleting tmp directories ... "
backup_contents.each do |dir|
next unless File.exist?(File.join(backup_path, dir))
if FileUtils.rm_rf(File.join(backup_path, dir))
progress.puts "done".color(:green)
else
puts "deleting tmp directory '#{dir}' failed".color(:red)
raise Backup::Error, 'Backup failed'
end
end
end
def remove_old
# delete backups
progress.print "Deleting old backups ... "
keep_time = Gitlab.config.backup.keep_time.to_i
if keep_time > 0
removed = 0
Dir.chdir(backup_path) do
backup_file_list.each do |file|
# For backward compatibility, there are 3 names the backups can have:
# - 1495527122_gitlab_backup.tar
# - 1495527068_2017_05_23_gitlab_backup.tar
# - 1495527097_2017_05_23_9.3.0-pre_gitlab_backup.tar
next unless file =~ /^(\d{10})(?:_\d{4}_\d{2}_\d{2}(_\d+\.\d+\.\d+((-|\.)(pre|rc\d))?(-ee)?)?)?_gitlab_backup\.tar$/
timestamp = $1.to_i
if Time.at(timestamp) < (Time.now - keep_time)
begin
FileUtils.rm(file)
removed += 1
rescue => e
progress.puts "Deleting #{file} failed: #{e.message}".color(:red)
end
end
end
end
progress.puts "done. (#{removed} removed)".color(:green)
else
progress.puts "skipping".color(:yellow)
end
end
# rubocop: disable Metrics/AbcSize
def unpack
Dir.chdir(backup_path) do
# check for existing backups in the backup dir
if backup_file_list.empty?
progress.puts "No backups found in #{backup_path}"
progress.puts "Please make sure that file name ends with #{FILE_NAME_SUFFIX}"
exit 1
elsif backup_file_list.many? && ENV["BACKUP"].nil?
progress.puts 'Found more than one backup:'
# print list of available backups
progress.puts " " + available_timestamps.join("\n ")
progress.puts 'Please specify which one you want to restore:'
progress.puts 'rake gitlab:backup:restore BACKUP=timestamp_of_backup'
exit 1
end
tar_file = if ENV['BACKUP'].present?
"#{ENV['BACKUP']}#{FILE_NAME_SUFFIX}"
else
backup_file_list.first
end
unless File.exist?(tar_file)
progress.puts "The backup file #{tar_file} does not exist!"
exit 1
end
progress.print 'Unpacking backup ... '
unless Kernel.system(*%W(tar -xf #{tar_file}))
progress.puts 'unpacking backup failed'.color(:red)
exit 1
else
progress.puts 'done'.color(:green)
end
ENV["VERSION"] = "#{settings[:db_version]}" if settings[:db_version].to_i > 0
# restoring mismatching backups can lead to unexpected problems
if settings[:gitlab_version] != Gitlab::VERSION
progress.puts(<<~HEREDOC.color(:red))
GitLab version mismatch:
Your current GitLab version (#{Gitlab::VERSION}) differs from the GitLab version in the backup!
Please switch to the following version and try again:
version: #{settings[:gitlab_version]}
HEREDOC
progress.puts
progress.puts "Hint: git checkout v#{settings[:gitlab_version]}"
exit 1
end
end
end
def tar_version
tar_version, _ = Gitlab::Popen.popen(%w(tar --version))
tar_version.force_encoding('locale').split("\n").first
end
def skipped?(item)
settings[:skipped] && settings[:skipped].include?(item) || disabled_features.include?(item)
end
private
def backup_path
Gitlab.config.backup.path
end
def backup_file_list
@backup_file_list ||= Dir.glob("*#{FILE_NAME_SUFFIX}")
end
def available_timestamps
@backup_file_list.map {|item| item.gsub("#{FILE_NAME_SUFFIX}", "")}
end
def connect_to_remote_directory(connection_settings)
# our settings use string keys, but Fog expects symbols
connection = ::Fog::Storage.new(connection_settings.symbolize_keys)
# We only attempt to create the directory for local backups. For AWS
# and other cloud providers, we cannot guarantee the user will have
# permission to create the bucket.
if connection.service == ::Fog::Storage::Local
connection.directories.create(key: remote_directory)
else
connection.directories.get(remote_directory)
end
end
def remote_directory
Gitlab.config.backup.upload.remote_directory
end
def remote_target
if ENV['DIRECTORY']
File.join(ENV['DIRECTORY'], tar_file)
else
tar_file
end
end
def backup_contents
folders_to_backup + archives_to_backup + ["backup_information.yml"]
end
def archives_to_backup
ARCHIVES_TO_BACKUP.map { |name| (name + ".tar.gz") unless skipped?(name) }.compact
end
def folders_to_backup
FOLDERS_TO_BACKUP.reject { |name| skipped?(name) }
end
def disabled_features
features = []
features << 'registry' unless Gitlab.config.registry.enabled
features
end
def settings
@settings ||= YAML.load_file("backup_information.yml")
end
def tar_file
@tar_file ||= "#{backup_information[:backup_created_at].strftime('%s_%Y_%m_%d_')}#{backup_information[:gitlab_version]}#{FILE_NAME_SUFFIX}"
end
def backup_information
@backup_information ||= {
db_version: ActiveRecord::Migrator.current_version.to_s,
backup_created_at: Time.now,
gitlab_version: Gitlab::VERSION,
tar_version: tar_version,
installation_type: Gitlab::INSTALLATION_TYPE,
skipped: ENV["SKIP"]
}
end
end
end