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Carrot

A synchronous amqp client. Based on Aman's amqp client:

http://github.com/tmm1/amqp/tree/master

Motivation

This client does not use eventmachine so no background thread necessary. As a result, it is much easier to use from script/console and Passenger. It also solves the problem of buffering messages and ack responses. For more details see this thread.

There is currently no way to prevent buffering using eventmachine. Support for prefetch is still unreliable.

Examples

require 'carrot'

q = Carrot.queue('name')
10.times do |num|
  q.publish(num.to_s)
end

puts "Queued #{q.message_count} messages"
puts

while msg = q.pop(:ack => true)
  puts "Popping: #{msg}"
  q.ack
end
Carrot.stop

Using options with server and queue

require 'carrot'

c = Carrot.new
q = c.queue('queue_name', {
  host: 'example.com',
  user: 'username',
  pass: 'passwd',
  vhost: '/',
  auto_delete: true
})
c.direct("name.exchange", { :durable => true })

10.times do |num|
  q.publish(num.to_s, {persistent: true, no_wait: false})
end

puts "Queued #{q.message_count} messages"

while msg = q.pop(:ack => true)
  puts "Popping: #{msg}"
  q.ack
end
c.stop

LICENSE

Copyright (c) 2009 Amos Elliston, Geni.com; Published under The MIT License, see License

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A synchronous amqp client

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