Random Sensors

Small library that generates random messages on an MQTT brocker.

Messages topics and payload

Sensors publish on 2 topics :

• "presence" with payload [id] where "[id]" is the id of the sensor.
• "value/[id]" with "[id]" the id of the sensor and a payload with format :

{
  "value": "[value]",
  "type": "[type]"
}

where "[value]" is the string value of the sensor and "[type]" the string representation of the type of value within:

• 'POSITIVE_NUMBER',
• 'PERCENT',
• 'ON_OFF',
• 'OPEN_CLOSE'.

run it

Run a default example with:

npm install
node test-random-sensors.js

run it with Docker

Docker is a powerful tool which lets you launch applications without configuring anything, whatever your system configuration is, whatever your distro is. You can find installation instructions here. You will also need docker-compose installed on your machine.

launch and use it

To launch the generator, place yourself in the project directory and launch :

docker-compose up -d

And it's done. You can now connect your MQTT client to 127.0.0.1:1883 via the MQTT port, and to 127.0.0.1:8080 via the WebSocket port.