Module: Bunny::Hop

Defined in:
lib/bunny/hop.rb,
lib/bunny/hop/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Instance Method Summary collapse

Instance Method Details

#initialize ⇒ Object 



5
6
7
8
9
10
11
12
13
 
# File 'lib/bunny/hop.rb', line 5

def initialize
  @connection = Bunny.new(
    host: ENV.fetch('RABBITMQ_HOST', 'rabbitmq'), 
    user: ENV.fetch('RABBITMQ_USER', 'rabbitmq'), 
    password: ENV.fetch('RABBITMQ_PASSWORD', 'rabbitmq')
  )
  @connection.start
  @channel = @connection.create_channel
end

#publish(queue, msg) ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/bunny/hop.rb', line 15

def publish(queue, msg)
  lock = Mutex.new
  condition = ConditionVariable.new
  response = nil
  call_id = "#{rand}#{rand}#{rand}"
  exchange = @channel.default_exchange

  reply_queue = @channel.queue('', exclusive: true)
  reply_queue.subscribe do |_delivery_info, properties, payload|
    if properties[:correlation_id] == call_id
      response = payload

      lock.synchronize { condition.signal }
    end
  end

  exchange.publish(msg,
    routing_key: queue,
    correlation_id: call_id,
    reply_to: reply_queue.name)

  Timeout::timeout(5) {
    lock.synchronize { condition.wait(lock) }
  }

  @channel.close
  @connection.close

  response
rescue Timeout::Error => e
  @channel.close
  @connection.close
  raise e
end

#subscribe(queue) ⇒ Object 



50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/bunny/hop.rb', line 50

def subscribe(queue)
  queue = @channel.queue(queue)
  exchange = @channel.default_exchange

  queue.subscribe do |_delivery_info, properties, payload|
    puts _delivery_info
    puts properties
    puts payload
    
    result = yield

    exchange.publish(
      result,
      routing_key: properties.reply_to,
      correlation_id: properties.correlation_id
    )
  end
end