migrate_repository_service.rb 2.31 KB
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# frozen_string_literal: true

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module Projects
  module HashedStorage
    class MigrateRepositoryService < BaseService
      include Gitlab::ShellAdapter

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      attr_reader :old_disk_path, :new_disk_path, :old_wiki_disk_path, :old_storage_version, :logger, :move_wiki
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      def initialize(project, old_disk_path, logger: nil)
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        @project = project
        @logger = logger || Rails.logger
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        @old_disk_path = old_disk_path
        @old_wiki_disk_path = "#{old_disk_path}.wiki"
        @move_wiki = has_wiki?
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      end

      def execute
        @old_storage_version = project.storage_version
        project.storage_version = ::Project::HASHED_STORAGE_FEATURES[:repository]
        project.ensure_storage_path_exists

        @new_disk_path = project.disk_path

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        result = move_repository(old_disk_path, new_disk_path)
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        if move_wiki
          result &&= move_repository("#{old_wiki_disk_path}", "#{new_disk_path}.wiki")
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        end

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        if result
          project.write_repository_config
        else
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          rollback_folder_move
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          project.storage_version = nil
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        end

        project.repository_read_only = false
        project.save!

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        if result && block_given?
          yield
        end

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        result
      end

      private

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      def has_wiki?
        gitlab_shell.exists?(project.repository_storage, "#{old_wiki_disk_path}.git")
      end

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      def move_repository(from_name, to_name)
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        from_exists = gitlab_shell.exists?(project.repository_storage, "#{from_name}.git")
        to_exists = gitlab_shell.exists?(project.repository_storage, "#{to_name}.git")
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        # If we don't find the repository on either original or target we should log that as it could be an issue if the
        # project was not originally empty.
        if !from_exists && !to_exists
          logger.warn "Can't find a repository on either source or target paths for #{project.full_path} (ID=#{project.id}) ..."
          return false
        elsif !from_exists
          # Repository have been moved already.
          return true
        end

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        gitlab_shell.mv_repository(project.repository_storage, from_name, to_name)
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      end

      def rollback_folder_move
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        move_repository(new_disk_path, old_disk_path)
        move_repository("#{new_disk_path}.wiki", old_wiki_disk_path)
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      end
    end
  end
end