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#!/usr/bin/env ruby
# encoding: utf-8
require "rubygems"
require "bunny"
puts "=> Demonstrating dead letter exchange"
puts
conn = Bunny.new
conn.start
ch = conn.create_channel
x = ch.fanout("amq.fanout")
dlx = ch.fanout("bunny.examples.dlx.exchange")
q = ch.queue("", :exclusive => true, :arguments => {"x-dead-letter-exchange" => dlx.name}).bind(x)
# dead letter queue
dlq = ch.queue("", :exclusive => true).bind(dlx)
x.publish("")
sleep 0.2
delivery_info, _, _ = q.pop(:manual_ack => true)
puts "#{dlq.message_count} messages dead lettered so far"
puts "Rejecting a message"
ch.nack(delivery_info.delivery_tag)
sleep 0.2
puts "#{dlq.message_count} messages dead lettered so far"
dlx.delete
puts "Disconnecting..."
conn.close
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