diff options
Diffstat (limited to 'lib/gitlab/import_export/project_tree_restorer.rb')
-rw-r--r-- | lib/gitlab/import_export/project_tree_restorer.rb | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/lib/gitlab/import_export/project_tree_restorer.rb b/lib/gitlab/import_export/project_tree_restorer.rb new file mode 100644 index 00000000000..dd71b92c522 --- /dev/null +++ b/lib/gitlab/import_export/project_tree_restorer.rb @@ -0,0 +1,105 @@ +module Gitlab + module ImportExport + class ProjectTreeRestorer + + def initialize(user:, shared:, project:) + @path = File.join(shared.export_path, 'project.json') + @user = user + @shared = shared + @project = project + end + + def restore + json = IO.read(@path) + @tree_hash = ActiveSupport::JSON.decode(json) + @project_members = @tree_hash.delete('project_members') + create_relations + rescue => e + @shared.error(e) + false + end + + def restored_project + @restored_project ||= restore_project + end + + private + + def members_mapper + @members_mapper ||= Gitlab::ImportExport::MembersMapper.new(exported_members: @project_members, + user: @user, + project: restored_project) + end + + # Loops through the tree of models defined in import_export.yml and + # finds them in the imported JSON so they can be instantiated and saved + # in the DB. The structure and relationships between models are guessed from + # the configuration yaml file too. + # Finally, it updates each attribute in the newly imported project. + def create_relations + saved = [] + default_relation_list.each do |relation| + next unless relation.is_a?(Hash) || @tree_hash[relation.to_s].present? + + create_sub_relations(relation, @tree_hash) if relation.is_a?(Hash) + + relation_key = relation.is_a?(Hash) ? relation.keys.first : relation + relation_hash = create_relation(relation_key, @tree_hash[relation_key.to_s]) + saved << restored_project.update_attribute(relation_key, relation_hash) + end + saved.all? + end + + def default_relation_list + Gitlab::ImportExport::Reader.new(shared: @shared).tree.reject do |model| + model.is_a?(Hash) && model[:project_members] + end + end + + def restore_project + return @project unless @tree_hash + + project_params = @tree_hash.reject { |_key, value| value.is_a?(Array) } + @project.update(project_params) + @project + end + + # Given a relation hash containing one or more models and its relationships, + # loops through each model and each object from a model type and + # and assigns its correspondent attributes hash from +tree_hash+ + # Example: + # +relation_key+ issues, loops through the list of *issues* and for each individual + # issue, finds any subrelations such as notes, creates them and assign them back to the hash + def create_sub_relations(relation, tree_hash) + relation_key = relation.keys.first.to_s + tree_hash[relation_key].each do |relation_item| + relation.values.flatten.each do |sub_relation| + relation_hash, sub_relation = assign_relation_hash(relation_item, sub_relation) + relation_item[sub_relation.to_s] = create_relation(sub_relation, relation_hash) unless relation_hash.blank? + end + end + end + + def assign_relation_hash(relation_item, sub_relation) + if sub_relation.is_a?(Hash) + relation_hash = relation_item[sub_relation.keys.first.to_s] + sub_relation = sub_relation.keys.first + else + relation_hash = relation_item[sub_relation.to_s] + end + [relation_hash, sub_relation] + end + + def create_relation(relation, relation_hash_list) + relation_array = [relation_hash_list].flatten.map do |relation_hash| + Gitlab::ImportExport::RelationFactory.create(relation_sym: relation.to_sym, + relation_hash: relation_hash.merge('project_id' => restored_project.id), + members_mapper: members_mapper, + user: @user) + end + + relation_hash_list.is_a?(Array) ? relation_array : relation_array.first + end + end + end +end |