summaryrefslogtreecommitdiff
path: root/lib/backup/repository.rb
blob: b6d273b98c2a3b4e787d1881c8478e81a3625b48 (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
215
216
require 'yaml'

module Backup
  class Repository
    # rubocop:disable Metrics/AbcSize
    def dump
      prepare

      Project.find_each(batch_size: 1000) do |project|
        progress.print " * #{display_repo_path(project)} ... "
        path_to_project_repo = path_to_repo(project)
        path_to_project_bundle = path_to_bundle(project)

        # Create namespace dir or hashed path if missing
        if project.hashed_storage?(:repository)
          FileUtils.mkdir_p(File.dirname(File.join(backup_repos_path, project.disk_path)))
        else
          FileUtils.mkdir_p(File.join(backup_repos_path, project.namespace.full_path)) if project.namespace
        end

        if empty_repo?(project)
          progress.puts "[SKIPPED]".color(:cyan)
        else
          in_path(path_to_project_repo) do |dir|
            FileUtils.mkdir_p(path_to_tars(project))
            cmd = %W(tar -cf #{path_to_tars(project, dir)} -C #{path_to_project_repo} #{dir})
            output, status = Gitlab::Popen.popen(cmd)

            unless status.zero?
              progress_warn(project, cmd.join(' '), output)
            end
          end

          cmd = %W(#{Gitlab.config.git.bin_path} --git-dir=#{path_to_project_repo} bundle create #{path_to_project_bundle} --all)
          output, status = Gitlab::Popen.popen(cmd)

          if status.zero?
            progress.puts "[DONE]".color(:green)
          else
            progress_warn(project, cmd.join(' '), output)
          end
        end

        wiki = ProjectWiki.new(project)
        path_to_wiki_repo = path_to_repo(wiki)
        path_to_wiki_bundle = path_to_bundle(wiki)

        if File.exist?(path_to_wiki_repo)
          progress.print " * #{display_repo_path(wiki)} ... "
          if empty_repo?(wiki)
            progress.puts " [SKIPPED]".color(:cyan)
          else
            cmd = %W(#{Gitlab.config.git.bin_path} --git-dir=#{path_to_wiki_repo} bundle create #{path_to_wiki_bundle} --all)
            output, status = Gitlab::Popen.popen(cmd)
            if status.zero?
              progress.puts " [DONE]".color(:green)
            else
              progress_warn(wiki, cmd.join(' '), output)
            end
          end
        end
      end
    end

    def restore
      Gitlab.config.repositories.storages.each do |name, repository_storage|
        path = repository_storage['path']
        next unless File.exist?(path)

        # Move repos dir to 'repositories.old' dir
        bk_repos_path = File.join(path, '..', 'repositories.old.' + Time.now.to_i.to_s)
        FileUtils.mv(path, bk_repos_path)
        # This is expected from gitlab:check
        FileUtils.mkdir_p(path, mode: 02770)
      end

      Project.find_each(batch_size: 1000) do |project|
        progress.print " * #{display_repo_path(project)} ... "
        path_to_project_repo = path_to_repo(project)
        path_to_project_bundle = path_to_bundle(project)

        project.ensure_storage_path_exists

        cmd = if File.exist?(path_to_project_bundle)
                %W(#{Gitlab.config.git.bin_path} clone --bare --mirror #{path_to_project_bundle} #{path_to_project_repo})
              else
                %W(#{Gitlab.config.git.bin_path} init --bare #{path_to_project_repo})
              end

        output, status = Gitlab::Popen.popen(cmd)
        if status.zero?
          progress.puts "[DONE]".color(:green)
        else
          progress_warn(project, cmd.join(' '), output)
        end

        in_path(path_to_tars(project)) do |dir|
          cmd = %W(tar -xf #{path_to_tars(project, dir)} -C #{path_to_project_repo} #{dir})

          output, status = Gitlab::Popen.popen(cmd)
          unless status.zero?
            progress_warn(project, cmd.join(' '), output)
          end
        end

        wiki = ProjectWiki.new(project)
        path_to_wiki_repo = path_to_repo(wiki)
        path_to_wiki_bundle = path_to_bundle(wiki)

        if File.exist?(path_to_wiki_bundle)
          progress.print " * #{display_repo_path(wiki)} ... "

          # If a wiki bundle exists, first remove the empty repo
          # that was initialized with ProjectWiki.new() and then
          # try to restore with 'git clone --bare'.
          FileUtils.rm_rf(path_to_wiki_repo)
          cmd = %W(#{Gitlab.config.git.bin_path} clone --bare #{path_to_wiki_bundle} #{path_to_wiki_repo})

          output, status = Gitlab::Popen.popen(cmd)
          if status.zero?
            progress.puts " [DONE]".color(:green)
          else
            progress_warn(project, cmd.join(' '), output)
          end
        end
      end

      progress.print 'Put GitLab hooks in repositories dirs'.color(:yellow)
      cmd = %W(#{Gitlab.config.gitlab_shell.path}/bin/create-hooks) + repository_storage_paths_args

      output, status = Gitlab::Popen.popen(cmd)
      if status.zero?
        progress.puts " [DONE]".color(:green)
      else
        puts " [FAILED]".color(:red)
        puts "failed: #{cmd}"
        puts output
      end
    end
    # rubocop:enable Metrics/AbcSize

    protected

    def path_to_repo(project)
      project.repository.path_to_repo
    end

    def path_to_bundle(project)
      File.join(backup_repos_path, project.disk_path + '.bundle')
    end

    def path_to_tars(project, dir = nil)
      path = File.join(backup_repos_path, project.disk_path)

      if dir
        File.join(path, "#{dir}.tar")
      else
        path
      end
    end

    def backup_repos_path
      File.join(Gitlab.config.backup.path, 'repositories')
    end

    def in_path(path)
      return unless Dir.exist?(path)

      dir_entries = Dir.entries(path)

      if dir_entries.include?('custom_hooks') || dir_entries.include?('custom_hooks.tar')
        yield('custom_hooks')
      end
    end

    def prepare
      FileUtils.rm_rf(backup_repos_path)
      # Ensure the parent dir of backup_repos_path exists
      FileUtils.mkdir_p(Gitlab.config.backup.path)
      # Fail if somebody raced to create backup_repos_path before us
      FileUtils.mkdir(backup_repos_path, mode: 0700)
    end

    def silent
      { err: '/dev/null', out: '/dev/null' }
    end

    private

    def progress_warn(project, cmd, output)
      progress.puts "[WARNING] Executing #{cmd}".color(:orange)
      progress.puts "Ignoring error on #{display_repo_path(project)} - #{output}".color(:orange)
    end

    def empty_repo?(project_or_wiki)
      project_or_wiki.repository.expire_exists_cache # protect backups from stale cache
      project_or_wiki.repository.empty_repo?
    rescue => e
      progress.puts "Ignoring repository error and continuing backing up project: #{display_repo_path(project_or_wiki)} - #{e.message}".color(:orange)

      false
    end

    def repository_storage_paths_args
      Gitlab.config.repositories.storages.values.map { |rs| rs['path'] }
    end

    def progress
      $progress
    end

    def display_repo_path(project)
      project.hashed_storage?(:repository) ? "#{project.full_path} (#{project.disk_path})" : project.full_path
    end
  end
end