Class: Delayed::MessageSending::DelayProxy

Inherits:
BasicObject
Defined in:
lib/delayed/message_sending.rb

Instance Method Summary collapse

Constructor Details

#initialize(object, synchronous: false, sender: nil, **enqueue_args) ⇒ DelayProxy

Returns a new instance of DelayProxy.


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# File 'lib/delayed/message_sending.rb', line 10

def initialize(object, synchronous: false, sender: nil, **enqueue_args)
  @object = object
  @enqueue_args = enqueue_args
  @synchronous = synchronous
  @sender = sender
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, **kwargs) ⇒ Object


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# File 'lib/delayed/message_sending.rb', line 17

def method_missing(method, *args, **kwargs)
  # method doesn't exist? must be method_missing; assume private access
  @sender = nil if !@sender.nil? &&
   !@object.methods.include?(method) &&
   !@object.protected_methods.include?(method) &&
   !@object.private_methods.include?(method)

  sender_is_object = @sender == @object
  sender_is_class = @sender.is_a?(@object.class)

  # even if the call is async, if the call is _going_ to generate an error, we make it synchronous
  # so that the error is generated immediately, instead of waiting for it to fail in a job,
  # which might go unnoticed
  if !@sender.nil? && !@synchronous
    @synchronous = true if !sender_is_object && @object.private_methods.include?(method)
    @synchronous = true if !sender_is_class && @object.protected_methods.include?(method)
  end

  if @synchronous
    if @sender.nil? || sender_is_object || sender_is_class && @object.protected_methods.include?(method)
      if kwargs.empty?
        return @object.send(method, *args)
      else
        return @object.send(method, *args, **kwargs)
      end
    end
    
    if kwargs.empty?
      return @object.public_send(method, *args)
    else
      return @object.public_send(method, *args, **kwargs)
    end
  end

  ignore_transaction = @enqueue_args.delete(:ignore_transaction)
  on_failure = @enqueue_args.delete(:on_failure)
  on_permanent_failure = @enqueue_args.delete(:on_permanent_failure)
  if !ignore_transaction
    # delay queuing up the job in another database until the results of the current
    # transaction are visible
    connection = @object.class.connection if @object.class.respond_to?(:connection)
    connection ||= @object.connection if @object.respond_to?(:connection)
    connection ||= ::ActiveRecord::Base.connection

    if (::Delayed::Job != ::Delayed::Backend::ActiveRecord::Job || connection != ::Delayed::Job.connection)
      connection.after_transaction_commit do
        ::Delayed::Job.enqueue(::Delayed::PerformableMethod.new(@object, method,
                                                            args: args, kwargs: kwargs,
                                                            on_failure: on_failure,
                                                            on_permanent_failure: on_permanent_failure,
                                                            sender: @sender),
                                                            **@enqueue_args)
      end
      return nil
    end
  end

  result = ::Delayed::Job.enqueue(::Delayed::PerformableMethod.new(@object, method,
                                                              args: args,
                                                              kwargs: kwargs,
                                                              on_failure: on_failure,
                                                              on_permanent_failure: on_permanent_failure,
                                                              sender: @sender),
                                                              **@enqueue_args)
  result = nil unless ignore_transaction
  result
end