picking export stuff from the UI branch

app/services/projects/import_export/export_service.rb

 module Projects
   module ImportExport
     class ExportService < BaseService
+
       def execute(options = {})
-        @shared = Gitlab::ImportExport::Shared.new(relative_path: project.path_with_namespace)
+        @shared = Gitlab::ImportExport::Shared.new(relative_path: File.join(project.path_with_namespace, 'work'))
         save_project_tree
         bundle_repo
         save_all

lib/gitlab/import_export/command_line_util.rb

@@ -5,6 +5,14 @@ module Gitlab
         tar_with_options(archive: archive, dir: dir, options: 'cf')
       end
 
+      def untar_zxf(archive:, dir:)
+        untar_with_options(archive: archive, dir: dir, options: 'zxf')
+      end
+
+      def untar_xf(archive:, dir:)
+        untar_with_options(archive: archive, dir: dir, options: 'xf')
+      end
+
       def tar_czf(archive:, dir:)
         tar_with_options(archive: archive, dir: dir, options: 'czf')
       end
@@ -20,6 +28,12 @@ module Gitlab
         _output, status = Gitlab::Popen.popen(cmd)
         status.zero?
       end
+
+      def untar_with_options(archive:, dir:, options:)
+        cmd = %W(tar -#{options} #{archive} -C #{dir})
+        _output, status = Gitlab::Popen.popen(cmd)
+        status.zero?
+      end
     end
   end
 end

lib/gitlab/import_export/import_export_reader.rb

@@ -57,8 +57,10 @@ module Gitlab
       end
 
       def add_new_class(current_key, included_classes_hash, value)
+        only_except_hash = check_only_and_except(value)
+        # TODO: refactor this
+        value = (value.is_a?(Hash) ? value.merge(only_except_hash) : { value => only_except_hash }) if only_except_hash
         new_hash = { include: value }
-        new_hash.merge!(check_only_and_except(value))
         included_classes_hash[current_key] = new_hash
       end
 

lib/gitlab/import_export/project_tree_saver.rb

@@ -24,6 +24,7 @@ module Gitlab
         false
       end
 
+      # TODO remove magic keyword and move it to a shared config
       def project_filename
         "project.json"
       end

lib/gitlab/import_export/repo_bundler.rb

@@ -26,6 +26,7 @@ module Gitlab
         false
       end
 
+      # TODO remove magic keyword and move it to a shared config
       def project_filename
         "project.bundle"
       end

lib/gitlab/import_export/saver.rb

@@ -14,6 +14,7 @@ module Gitlab
       def save
         if compress_and_save
           remove_storage_path
+          Rails.logger.info("Saved project export #{archive_file}")
           archive_file
         else
           false