Node-RED AMQP input and output nodes

node-red-contrib-amqp is a Node-RED package that connects directly to an AMQP server (e.g. RabbitMQ). It contains an input, an output and a configuration node to connect to AMQP exchanges or queues for Node-RED.

Table of Contents

• Installation
• Overview

Installation

If you have installed Node-RED as a global node.js package (you use the command node-red anywhere to start it), you need to install node-red-contrib-amqp as a global package as well:

$[sudo] npm install -g @node-red-tools/node-red-contrib-amqp

If you have installed the .zip or cloned your own copy of Node-RED from github, you can install it as a normal npm package inside the Node-RED project directory:

<path/to/node-red>$ npm install @node-red-tools/node-red-contrib-amqp

Overview

The package contains the following Node-RED nodes:

input: amqp

Subscribes to an AMQP exchange or queue and reads messages from it. It outputs an object called msg containing the following fields:

• msg.payload is a string or an object containing the content of the AMQP message.
• msg.topic is a string containing the routing-key of the AMQP message.

If a topic is defined in the input node definition, that will be sent as msg.topic instead of the routing key.

In the settings you can only define the exchange type or queue and it's name.

output: amqp

Delivers incoming the message payload to the specified exchange or queue. It expects an object called msg containing the following fields:

• msg.payload: string or an object containing the content of the AMQP message to be sent.
• msg.topic: string containing the routing-key of the AMQP message to be sent.
• msg.options: object containing specific AMQP properties for the message to be sent, see the amqplib publish documentation for more information.

If a topic is defined in the output node definition, that will be sent as routing-key instead of the msg.topic. If the msg.payload field does not exist, the whole msg object will be sent.

In the settings you can only define the exchange type or queue and it's name.

configuration: amqp-server

Defines the connection to the AMQP server.