debian-mirror-gitlab/app/services/projects/lfs_pointers/lfs_download_service.rb
2018-12-15 14:41:45 +05:30

65 lines
2 KiB
Ruby

# frozen_string_literal: true
# This service downloads and links lfs objects from a remote URL
module Projects
module LfsPointers
class LfsDownloadService < BaseService
VALID_PROTOCOLS = %w[http https].freeze
# rubocop: disable CodeReuse/ActiveRecord
def execute(oid, url)
return unless project&.lfs_enabled? && oid.present? && url.present?
return if LfsObject.exists?(oid: oid)
sanitized_uri = Gitlab::UrlSanitizer.new(url)
Gitlab::UrlBlocker.validate!(sanitized_uri.sanitized_url, protocols: VALID_PROTOCOLS)
with_tmp_file(oid) do |file|
size = download_and_save_file(file, sanitized_uri)
lfs_object = LfsObject.new(oid: oid, size: size, file: file)
project.all_lfs_objects << lfs_object
end
rescue StandardError => e
Rails.logger.error("LFS file with oid #{oid} could't be downloaded from #{sanitized_uri.sanitized_url}: #{e.message}")
end
# rubocop: enable CodeReuse/ActiveRecord
private
def download_and_save_file(file, sanitized_uri)
IO.copy_stream(open(sanitized_uri.sanitized_url, headers(sanitized_uri)), file) # rubocop:disable Security/Open
end
def headers(sanitized_uri)
{}.tap do |headers|
credentials = sanitized_uri.credentials
if credentials[:user].present? || credentials[:password].present?
# Using authentication headers in the request
headers[:http_basic_authentication] = [credentials[:user], credentials[:password]]
end
end
end
def with_tmp_file(oid)
create_tmp_storage_dir
File.open(File.join(tmp_storage_dir, oid), 'w') { |file| yield file }
end
def create_tmp_storage_dir
FileUtils.makedirs(tmp_storage_dir) unless Dir.exist?(tmp_storage_dir)
end
def tmp_storage_dir
@tmp_storage_dir ||= File.join(storage_dir, 'tmp', 'download')
end
def storage_dir
@storage_dir ||= Gitlab.config.lfs.storage_path
end
end
end
end