Class: ZMQMachine::Socket::Pair

Inherits:
Object
  • Object
show all
Includes:
Base
Defined in:
lib/zm/sockets/pair.rb

Instance Attribute Summary

Attributes included from Base

#kind, #poll_options, #raw_socket

Instance Method Summary collapse

Methods included from Base

#attach, #bind, #connect, #identity, #identity=, #inspect, #resume_read, #resume_write, #send_message, #send_message_string, #send_messages

Constructor Details

#initialize(context, handler) ⇒ Pair

Returns a new instance of Pair.



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# File 'lib/zm/sockets/pair.rb', line 44

def initialize context, handler
  @poll_options = ZMQ::POLLIN | ZMQ::POLLOUT
  @kind = :pair

  super
  @state = :ready
end

Instance Method Details

#on_attach(handler) ⇒ Object

Attach a handler to the PAIR socket.

A PAIR socket may send and receive messages without restriction to order or quantity of send/recv operations.

This socket expects its handler to implement the #on_readable and #on_writable methods. The #on_readable method will be called whenever a message may be dequeued without blocking. The #on_writable method will be called whenever a message may be enqueued without blocking.

For error handling purposes, the handler must also implement #on_readable_error and #on_writable_error.

Raises:

  • (ArgumentError) 


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# File 'lib/zm/sockets/pair.rb', line 68

def on_attach handler
  raise ArgumentError, "Handler must implement an #on_readable method" unless handler.respond_to? :on_readable
  raise ArgumentError, "Handler must implement an #on_writable method" unless handler.respond_to? :on_writable
  raise ArgumentError, "Handler must implement an #on_readable_error method" unless handler.respond_to? :on_readable_error
  raise ArgumentError, "Handler must implement an #on_writable_error method" unless handler.respond_to? :on_writable_error
  super
end