Method: ZMQMachine::Deferrable#errback

Defined in:
lib/zm/deferrable.rb

#errback(&block) ⇒ Object

Specify a block to be executed if and when the Deferrable object receives a status of :failed. See #set_deferred_status for more information. – If there is no status, add an errback to an internal list. If status is failed, execute the errback immediately. If status is succeeded, do nothing.



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# File 'lib/zm/deferrable.rb', line 67

def errback &block
  return unless block
  @deferred_status ||= :unknown
  if @deferred_status == :failed
    block.call(*@deferred_args)
  elsif @deferred_status != :succeeded
    @errbacks ||= []
    @errbacks.unshift block # << block
  end
end