require 'active_job/queue_adapters/inline_adapter' require 'active_support/core_ext/class/attribute' require 'active_support/core_ext/string/inflections' module ActiveJob # The ActiveJob::QueueAdapter module is used to load the # correct adapter. The default queue adapter is the +:async+ queue. module QueueAdapter #:nodoc: extend ActiveSupport::Concern included do class_attribute :_queue_adapter, instance_accessor: false, instance_predicate: false self.queue_adapter = :async end # Includes the setter method for changing the active queue adapter. module ClassMethods # Returns the backend queue provider. The default queue adapter # is the +:async+ queue. See QueueAdapters for more information. def queue_adapter _queue_adapter end # Specify the backend queue provider. The default queue adapter # is the +:async+ queue. See QueueAdapters for more # information. def queue_adapter=(name_or_adapter_or_class) self._queue_adapter = interpret_adapter(name_or_adapter_or_class) end private def interpret_adapter(name_or_adapter_or_class) case name_or_adapter_or_class when Symbol, String ActiveJob::QueueAdapters.lookup(name_or_adapter_or_class).new else if queue_adapter?(name_or_adapter_or_class) name_or_adapter_or_class elsif queue_adapter_class?(name_or_adapter_or_class) ActiveSupport::Deprecation.warn "Passing an adapter class is deprecated " \ "and will be removed in Rails 5.1. Please pass an adapter name " \ "(.queue_adapter = :#{name_or_adapter_or_class.name.demodulize.remove('Adapter').underscore}) " \ "or an instance (.queue_adapter = #{name_or_adapter_or_class.name}.new) instead." name_or_adapter_or_class.new else raise ArgumentError end end end QUEUE_ADAPTER_METHODS = [:enqueue, :enqueue_at].freeze def queue_adapter?(object) QUEUE_ADAPTER_METHODS.all? { |meth| object.respond_to?(meth) } end def queue_adapter_class?(object) object.is_a?(Class) && QUEUE_ADAPTER_METHODS.all? { |meth| object.public_method_defined?(meth) } end end end end