Ack Example
$:.unshift File.dirname(__FILE__) + '/../../lib'
require 'mq'
# For ack to work appropriately you must shutdown AMQP gracefully,
# otherwise all items in your queue will be returned
Signal.trap('INT') { AMQP.stop{ EM.stop } }
Signal.trap('TERM'){ AMQP.stop{ EM.stop } }
AMQP.start(:host => 'localhost') do
MQ.queue('awesome').publish('Totally rad 1')
MQ.queue('awesome').publish('Totally rad 2')
MQ.queue('awesome').publish('Totally rad 3')
i = 0
# Stopping after the second item was acked will keep the 3rd item in the queue
MQ.queue('awesome').subscribe(:ack => true) do |h,m|
if (i+=1) == 3
puts 'Shutting down...'
AMQP.stop{ EM.stop }
end
if AMQP.closing?
puts "#{m} (ignored, redelivered later)"
else
puts m
h.ack
end
end
end
__END__
Totally rad 1
Totally rad 2
Shutting down...
Totally rad 3 (ignored, redelivered later)
When restarted:
Totally rad 3
Totally rad 1
Shutting down...
Totally rad 2 (ignored, redelivered later)
Totally rad 3 (ignored, redelivered later)