node-red-contrib-nools 0.0.6
Node red nodes to integrate rules into your flow
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.
Message
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
Clock
Clock.getHours()
Clock.getMinutes()
Clock.hoursIsBetween(h1, h2)
Example
Installation
Just install this plugin in your Node-RED folder by using npm:
npm install node-red-contrib-nools
Or if you have installed Node-RED globally use:
npm install -g node-red-contrib-nools
Contributing
- Fork it!
- Create your feature branch:
git checkout -b my-new-feature - Commit your changes:
git commit -am 'Add some feature' - Push to the branch:
git push origin my-new-feature - 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
