require "google/cloud/storage" require "active_support/core_ext/object/to_query" module ActiveStorage # Wraps the Google Cloud Storage as a Active Storage service. See `ActiveStorage::Service` for the generic API # documentation that applies to all services. class Service::GCSService < Service attr_reader :client, :bucket def initialize(project:, keyfile:, bucket:) @client = Google::Cloud::Storage.new(project: project, keyfile: keyfile) @bucket = @client.bucket(bucket) end def upload(key, io, checksum: nil) instrument :upload, key, checksum: checksum do begin bucket.create_file(io, key, md5: checksum) rescue Google::Cloud::InvalidArgumentError raise ActiveStorage::IntegrityError end end end # FIXME: Add streaming when given a block def download(key) instrument :download, key do io = file_for(key).download io.rewind io.read end end def delete(key) instrument :delete, key do file_for(key).try(:delete) end end def exist?(key) instrument :exist, key do |payload| answer = file_for(key).present? payload[:exist] = answer answer end end def url(key, expires_in:, disposition:, filename:, content_type:) instrument :url, key do |payload| generated_url = file_for(key).signed_url expires: expires_in, query: { "response-content-disposition" => "#{disposition}; filename=\"#{filename}\"", "response-content-type" => content_type } payload[:url] = generated_url generated_url end end def url_for_direct_upload(key, expires_in:, content_type:, content_length:, checksum:) instrument :url, key do |payload| generated_url = bucket.signed_url key, method: "PUT", expires: expires_in, content_type: content_type, content_md5: checksum payload[:url] = generated_url generated_url end end def headers_for_direct_upload(key, content_type:, checksum:, **) { "Content-Type" => content_type, "Content-MD5" => checksum } end private def file_for(key) bucket.file(key) end end end