Bridge data to RabbitMQ

Setup a RabbitMQ, taking Mac OSX for instance:

  1. $ brew install rabbitmq
  3. # start rabbitmq
  4. $ rabbitmq-server

Create a rule:

Go to EMQX DashboardBridge data to RabbitMQ - 图1 (opens new window), select the “rule” tab on the menu to the left.

Select “message.publish”, then type in the following SQL:

  1. SELECT
  2.     *
  3. FROM
  4.     "message.publish"

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Bind an action:

  1. Click on the "+ Add" button under "Action Handler", and then select
  2. "Data bridge to RabbitMQ" in the pop-up dialog window.

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Fill in the parameters required by the action:

Two parameters is required by action “Data bridge to RabbitMQ”:

1). RabbitMQ Exchange. Here set it to “messages”

2). RabbitMQ Exchange Type. Here set it to “topic”

3). RabbitMQ Routing Key. Here set it to “test”

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4). Bind a resource to the action. Since the dropdown list “Resource” is empty for now, we create a new resource by clicking on the “New Resource” to the top right, and then select “RabbitMQ”:

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Configure the resource:

Set “RabbitMQ Server” to “127.0.0.1:5672”, and keep all other configs as default, and click on the “Testing Connection” button to make sure the connection can be created successfully, and then click on the “Create” button.

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Back to the “Actions” dialog, and then click on the “Confirm” button.

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Back to the creating rule page, then click on “Create” button. The rule we created will be show in the rule list:

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We have finished, testing the rule by sending an MQTT message to emqx:

  1. Topic: "t/1"
  3. QoS: 0
  5. Retained: false
  7. Payload: "Hello, World\!"

Write an AMQP Client to consume the messages, following is the one written in python:

  1. #!/usr/bin/env python
  2. import pika
  4. connection = pika.BlockingConnection(
  5.     pika.ConnectionParameters(host='localhost'))
  6. channel = connection.channel()
  8. channel.exchange_declare(exchange='messages', exchange_type='topic')
  10. result = channel.queue_declare(queue='', exclusive=True)
  11. queue_name = result.method.queue
  13. channel.queue_bind(exchange='messages', queue=queue_name, routing_key='test')
  15. print('[*] Waiting for messages. To exit press CTRL+C')
  17. def callback(ch, method, properties, body):
  18.     print(" [x] %r" % body)
  20. channel.basic_consume(
  21.     queue=queue_name, on_message_callback=callback, auto_ack=True)
  23. channel.start_consuming()

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And from the rule list, verify that the “Matched” column has increased to 1:

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