summaryrefslogtreecommitdiff
path: root/lib/backup/manager.rb
blob: 8d64c82272a4d6de42572174dc06300708f82d11 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
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

    def pack
      # Make sure there is a connection
      ActiveRecord::Base.connection.reconnect!

      # saving additional informations
      s = {}
      s[:db_version]         = "#{ActiveRecord::Migrator.current_version}"
      s[:backup_created_at]  = Time.now
      s[:gitlab_version]     = Gitlab::VERSION
      s[:tar_version]        = tar_version
      s[:skipped]            = ENV["SKIP"]
      tar_file = "#{s[:backup_created_at].strftime('%s_%Y_%m_%d')}#{FILE_NAME_SUFFIX}"

      Dir.chdir(backup_path) do
        File.open("#{backup_path}/backup_information.yml", "w+") do |file|
          file << s.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)
          abort 'Backup failed'
        end

        upload(tar_file)
      end
    end

    def upload(tar_file)
      $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: tar_file, 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)
        abort '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)
          abort '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|
            next unless file =~ /(\d+)(?:_\d{4}_\d{2}_\d{2})?_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

    def unpack
      Dir.chdir(backup_path)

      # 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, 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 'GitLab version mismatch:'.color(:red)
        $progress.puts "  Your current GitLab version (#{Gitlab::VERSION}) differs from the GitLab version in the backup!".color(:red)
        $progress.puts '  Please switch to the following version and try again:'.color(:red)
        $progress.puts "  version: #{settings[:gitlab_version]}".color(:red)
        $progress.puts
        $progress.puts "Hint: git checkout v#{settings[:gitlab_version]}"
        exit 1
      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 connect_to_remote_directory(connection_settings)
      connection = ::Fog::Storage.new(connection_settings)

      # 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 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
  end
end