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require 'active_job/queue_adapters/inline_adapter'
require 'active_support/core_ext/string/inflections'
module ActiveJob
# The <tt>ActiveJob::QueueAdapter</tt> module is used to load the
# correct adapter. The default queue adapter is the :inline queue.
module QueueAdapter #:nodoc:
extend ActiveSupport::Concern
# Includes the setter method for changing the active queue adapter.
module ClassMethods
mattr_reader(:queue_adapter) { ActiveJob::QueueAdapters::InlineAdapter }
# Specify the backend queue provider. The default queue adapter
# is the :inline queue. See QueueAdapters for more
# information.
def queue_adapter=(name_or_adapter_or_class)
case name_or_adapter_or_class
when Symbol, String
self.queue_adapter = load_adapter(name_or_adapter_or_class)
else
@@queue_adapter = 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
private
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
def load_adapter(name)
"ActiveJob::QueueAdapters::#{name.to_s.camelize}Adapter".constantize.new
end
end
end
end
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