move backup logic to lib. Fixed removing outdated backups

1 files changed, 106 insertions, 0 deletions

diff --git a/lib/backup/manager.rb b/lib/backup/manager.rb
new file mode 100644
index 00000000000..258a0fb2589
--- /dev/null
+++ b/lib/backup/manager.rb
@@ -0,0 +1,106 @@
+module Backup
+  class Manager
+    def pack
+      # saving additional informations
+      s = {}
+      s[:db_version]         = "#{ActiveRecord::Migrator.current_version}"
+      s[:backup_created_at]  = Time.now
+      s[:gitlab_version]     = %x{git rev-parse HEAD}.gsub(/\n/,"")
+      s[:tar_version]        = %x{tar --version | head -1}.gsub(/\n/,"")
+
+      Dir.chdir(Gitlab.config.backup.path)
+
+      File.open("#{Gitlab.config.backup.path}/backup_information.yml", "w+") do |file|
+        file << s.to_yaml.gsub(/^---\n/,'')
+      end
+
+      # create archive
+      print "Creating backup archive: #{s[:backup_created_at].to_i}_gitlab_backup.tar ... "
+      if Kernel.system("tar -cf #{s[:backup_created_at].to_i}_gitlab_backup.tar repositories/ db/ uploads/ backup_information.yml")
+        puts "done".green
+      else
+        puts "failed".red
+      end
+    end
+
+    def cleanup
+      print "Deleting tmp directories ... "
+      if Kernel.system("rm -rf repositories/ db/ uploads/ backup_information.yml")
+        puts "done".green
+      else
+        puts "failed".red
+      end
+    end
+
+    def remove_old
+      # delete backups
+      print "Deleting old backups ... "
+      keep_time = Gitlab.config.backup.keep_time.to_i
+      path = Gitlab.config.backup.path
+
+      if keep_time > 0
+        removed = 0
+        file_list = Dir.glob(Rails.root.join(path, "*_gitlab_backup.tar"))
+        file_list.map! { |f| $1.to_i if f =~ /(\d+)_gitlab_backup.tar/ }
+        file_list.sort.each do |timestamp|
+          if Time.at(timestamp) < (Time.now - keep_time)
+            if system("rm #{timestamp}_gitlab_backup.tar")
+              removed += 1
+            end
+          end
+        end
+        puts "done. (#{removed} removed)".green
+      else
+        puts "skipping".yellow
+      end
+    end
+
+    def unpack
+      Dir.chdir(Gitlab.config.backup.path)
+
+      # check for existing backups in the backup dir
+      file_list = Dir.glob("*_gitlab_backup.tar").each.map { |f| f.split(/_/).first.to_i }
+      puts "no backups found" if file_list.count == 0
+      if file_list.count > 1 && ENV["BACKUP"].nil?
+        puts "Found more than one backup, please specify which one you want to restore:"
+        puts "rake gitlab:backup:restore BACKUP=timestamp_of_backup"
+        exit 1
+      end
+
+      tar_file = ENV["BACKUP"].nil? ? File.join("#{file_list.first}_gitlab_backup.tar") : File.join(ENV["BACKUP"] + "_gitlab_backup.tar")
+
+      unless File.exists?(tar_file)
+        puts "The specified backup doesn't exist!"
+        exit 1
+      end
+
+      print "Unpacking backup ... "
+      unless Kernel.system("tar -xf #{tar_file}")
+        puts "failed".red
+        exit 1
+      else
+        puts "done".green
+      end
+
+      settings = YAML.load_file("backup_information.yml")
+      ENV["VERSION"] = "#{settings[:db_version]}" if settings[:db_version].to_i > 0
+
+      # backups directory is not always sub of Rails root and able to execute the git rev-parse below
+      begin
+        Dir.chdir(Rails.root)
+
+        # restoring mismatching backups can lead to unexpected problems
+        if settings[:gitlab_version] != %x{git rev-parse HEAD}.gsub(/\n/, "")
+          puts "GitLab version mismatch:".red
+          puts "  Your current HEAD differs from the HEAD in the backup!".red
+          puts "  Please switch to the following revision and try again:".red
+          puts "  revision: #{settings[:gitlab_version]}".red
+          exit 1
+        end
+      ensure
+        # chdir back to original intended dir
+        Dir.chdir(Gitlab.config.backup.path)
+      end
+    end
+  end
+end