Nools rule engine for Node-RED

This package provides a rule engine for node-RED. It uses nools, a rete-based rule engine. You can create custom __flows__ with multiple rules, the flow is bind to one or more __assert__ nodes to insert new __facts__ into the flow. Each __fact__ is of type Message and identified by the msg.topic of the incoming node-RED message. If a message already exists with the same topic it will be updated. New messages will be asserted. If all conditions of a rule are evaluated the rule will be fired. The __fire__ node outputs the rule name into your node-RED flow. The message object provides different functions and properties. There is also a Clock class which is available.

You can use the publish({topic: "sometopic", payload: "somepayload"}) to publish messages via the __fire__ node. The __topic__ property of the node operates as a filter.

$3

##### Message.payload or Message.p
The current payload
##### Message.topic or Message.t
The topic and identifier of the message object
##### Message.changed
true if the msg.payload changed
##### Message.currentChange
timestamp of the change
##### Message.lastChange
timestamp of the previous change
##### Message.changedFromTo(from,to)
Returns true if the msg.payload changed from from to to
##### Message.changedTo(to)
Returns true if the msg.payload changed to to from any
##### Message.changedFrom(from)
Returns true if the msg.payload changed from from to any

$3

##### Clock.getHours()
##### Clock.getMinutes()
##### Clock.hoursIsBetween(h1, h2)

Example


Installation

Just install this plugin in your Node-RED folder by using npm:

``bash
npm install node-red-contrib-nools
`

Or if you have installed Node-RED globally use:

`bash
npm install -g node-red-contrib-nools
`

Contributing


1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature`
5. Submit a pull request :D

History

Credits

Jochen Scheib

Inspired by __Robert Hekkers__:
http://blog.hekkers.net/2014/06/30/making-a-scene/

License

MIT