Class: Ragnar::Exchange

Inherits:
Object
  • Object
show all
Defined in:
lib/ragnar/exchange.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, name, opts = {}) ⇒ Exchange

Returns a new instance of Exchange.



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# File 'lib/ragnar/exchange.rb', line 7

def initialize type, name, opts={}
  @type, @name, @options = type, name, opts
end

Instance Attribute Details

#channel ⇒ Object (readonly)

Returns the value of attribute channel.



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# File 'lib/ragnar/exchange.rb', line 4

def channel
  @channel
end

#exchange ⇒ Object (readonly)

Returns the value of attribute exchange.



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# File 'lib/ragnar/exchange.rb', line 4

def exchange
  @exchange
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/ragnar/exchange.rb', line 4

def name
  @name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/ragnar/exchange.rb', line 4

def options
  @options
end

#queue_prefix ⇒ Object

Returns the value of attribute queue_prefix.



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# File 'lib/ragnar/exchange.rb', line 5

def queue_prefix
  @queue_prefix
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/ragnar/exchange.rb', line 4

def type
  @type
end

Instance Method Details

#publish(routing_key, message, opts = {}) ⇒ Object 



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# File 'lib/ragnar/exchange.rb', line 11

def publish routing_key, message, opts={}
  EM.schedule do
    channel, exchange = setup_connection
    channel.queue(@name).bind(exchange, opts.merge(:routing_key => routing_key))
    exchange.publish(message, opts.merge(:routing_key => routing_key))
  end
end

#subscribe(name, subscribe_opts = {}, &block) ⇒ Object

Takes a subscription key or queue/routing options

exchange.subscribe('the.key') # => queue name and routing key are 'the.key'
exchange.subscribe(:queue => 'my.queue', :routing_key => 'message.*.pattern')



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# File 'lib/ragnar/exchange.rb', line 24

def subscribe name, subscribe_opts={}, &block
  if name.is_a?(Hash)
    queue_name = name[:queue] or raise 'Invalid queue name'
    routing_key = name[:routing_key]
  else
    raise 'Invalid queue name' if name.nil? or name.strip.empty?
    queue_name = queue_prefix.nil? ? name : '%s.%s' % [queue_prefix, name]
    routing_key = name
  end

  EM.schedule do
    channel, exchange = setup_connection
    channel.queue(queue_name).bind(exchange, :routing_key => routing_key).subscribe(subscribe_opts, &block)
  end
end