Namespace

AMQP::RPC

Basic RPC (remote procedure call) facility.

Needs more detail and explanation.

EM.run do
  server = AMQP::Channel.new.rpc('hash table node', Hash)

  client = AMQP::Channel.new.rpc('hash table node')
  client[:now] = Time.now
  client[:one] = 1

  client.values do |res|
    p 'client', :values => res
  end

  client.keys do |res|
    p 'client', :keys => res
    EM.stop_event_loop
  end
end

@note This class will be removed before 1.0 release. @deprecated @private

Attributes

name[R]

API

Public Class Methods

new(channel, queue, obj = nil) click to toggle source

Takes a channel, queue and optional object.

The optional object may be a class name, module name or object instance. When given a class or module name, the object is instantiated during this setup. The passed queue is automatically subscribed to so it passes all messages (and their arguments) to the object.

Marshalling and unmarshalling the objects is handled internally. This marshalling is subject to the same restrictions as defined in the {ruby-doc.org/core/classes/Marshal.html Marshal} standard library. See that documentation for further reference.

When the optional object is not passed, the returned rpc reference is used to send messages and arguments to the queue. See method_missing which does all of the heavy lifting with the proxy. Some client elsewhere must call this method with the optional block so that there is a valid destination. Failure to do so will just enqueue marshalled messages that are never consumed.

# File lib/amqp/deprecated/rpc.rb, line 67
def initialize(channel, queue, obj = nil)
  @name    = queue
  @channel = channel
  @channel.register_rpc(self)

  if @obj = normalize(obj)
    @delegate = Server.new(channel, queue, @obj)
  else
    @delegate = Client.new(channel, queue)
  end
end

Public Instance Methods

client?() click to toggle source
# File lib/amqp/deprecated/rpc.rb, line 80
def client?
  @obj.nil?
end
method_missing(selector, *args, &block) click to toggle source
# File lib/amqp/deprecated/rpc.rb, line 89
def method_missing(selector, *args, &block)
  @delegate.__send__(selector, *args, &block)
end
server?() click to toggle source
# File lib/amqp/deprecated/rpc.rb, line 84
def server?
  !client?
end

Protected Instance Methods

normalize(input) click to toggle source
# File lib/amqp/deprecated/rpc.rb, line 157
def normalize(input)
  case input
  when ::Class
    input.new
  when ::Module
    (::Class.new do include(obj) end).new
  else
    input
  end
end

[Validate]

Generated with the Darkfish Rdoc Generator 2.