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module Gitlab
module ImportExport
class ProjectTreeRestorer
def initialize(user:, shared:, namespace_id:)
@path = File.join(shared.export_path, 'project.json')
@user = user
@project_path = shared.opts[:project_path]
@namespace_id = namespace_id
@shared = shared
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 project
@project ||= create_project
end
private
def members_mapper
@members_mapper ||= Gitlab::ImportExport::MembersMapper.new(exported_members: @project_members,
user: @user,
project: 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 << project.update_attribute(relation_key, relation_hash)
end
saved.all?
end
def default_relation_list
Gitlab::ImportExport::ImportExportReader.new(shared: @shared).tree.reject do |model|
model.is_a?(Hash) && model[:project_members]
end
end
def create_project
project_params = @tree_hash.reject { |_key, value| value.is_a?(Array) }
project = Gitlab::ImportExport::ProjectFactory.create(
project_params: project_params, user: @user, namespace_id: @namespace_id)
project.path = @project_path
project.name = @project_path
project.save!
project
end
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|
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_item[sub_relation.to_s] = create_relation(sub_relation, relation_hash) unless relation_hash.blank?
end
end
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' => project.id),
members_mapper: members_mapper,
user_admin: @user.is_admin?)
end
relation_hash_list.is_a?(Array) ? relation_array : relation_array.first
end
end
end
end
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