Class: Pub::Bartender

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
lib/pub/bartender.rb

Overview

A bartender.

In other words, a producer in our processing queue.

Instance Method Summary collapse

Constructor Details

#initialize(pub_name) ⇒ Bartender

Creates a new bartender.

Takes the name of the pub.



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# File 'lib/pub/bartender.rb', line 11

def initialize(pub_name)
  @pub_name = pub_name
end

Instance Method Details

#serve(beer, &block) ⇒ Object

Serves a beer to a thirsty patron.

Takes a block which should return a glass of beer.

See below for example usage.



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# File 'lib/pub/bartender.rb', line 20

def serve(beer, &block)
  counter.lrem(@pub_name, 0, beer)
  counter.publish(order_for(beer), block.call)
end

#take_orders(count = 1) ⇒ Object

Takes one or more orders from the queue.

orders = bartender.take_orders(3)
orders.each do |order|
    bartender.serve(order) do
      "A pint of #{order}"
  end
end



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# File 'lib/pub/bartender.rb', line 33

def take_orders(count = 1)
  orders = Array.new

  count.times do
    order = counter.lpop(@pub_name) || break
    orders << order
  end

  orders
end