node-red-contrib-later 0.0.5

A node red node for triggering using later.js

npm install node-red-contrib-later

node-red-contrib-later

A node red node for triggering using later.js.

Installation

$npm install node-red-contrib-later

Usage

This node accepts a msg and sends it on according to a schedule defined by a string parsed through later.parse.text(). In all cases the schedule string in the node schedule string property is used if set.

If the schedule fails to parse node.warn() is called with details of the string and error as reported by the parser, and the msg.payload is sent on immediately.

If the schedule is empty, the msg.payload is passed straight through.

To cancel a running schedule pass in a message with an empty payload with the msg.later property from a previously sent sceduled message.

Payload as an object

If the payload is an object the property msg.payload.later is used as the schedule string if the node doesn't have a schedule property set.

Examples

See the documentation of later.parse.text() for the format of the schedule string.

every 10 seconds or at 10:15 am are simple examples.

Example flow files

Try pasting in the flow file below that sends the message every 10th second twice.

[{"id":"b9995d6c.4666a","type":"later","name":"The schedule","schedule":"every 10 seconds","x":384,"y":129,"z":"80e3898c.7f1c78","wires":[["b8f9cfce.47063","4a71efdd.b58e1"]]},{"id":"b9335ee3.46cca","type":"inject","name":"","topic":"","payload":"comes out later","payloadType":"string","repeat":"","crontab":"","once":true,"x":124,"y":130,"z":"80e3898c.7f1c78","wires":[["b9995d6c.4666a"]]},{"id":"b8f9cfce.47063","type":"debug","name":"","active":true,"console":"false","complete":"true","x":620,"y":129,"z":"80e3898c.7f1c78","wires":[]},{"id":"4a71efdd.b58e1","type":"function","name":"Run schedule 2 times","func":"if (msg.later.count >= 2) {\n    delete msg.payload; \n    return msg;\n} else {\n    return;\n}\n","outputs":1,"valid":true,"x":382,"y":248,"z":"80e3898c.7f1c78","wires":[["b9995d6c.4666a"]]}]

This flow does essentially the same, but uses a schedule sent in as a property in msg.payload as an object.

[{"id":"e28ebddd.1d714","type":"inject","name":"","topic":"","payload":"{\"later\":\"every 10 sec\"}","payloadType":"string","repeat":"","crontab":"","once":true,"x":115,"y":196,"z":"cb2e612f.34d1a","wires":[["64e96677.9b1698"]]},{"id":"64e96677.9b1698","type":"json","name":"","x":262,"y":196,"z":"cb2e612f.34d1a","wires":[["507261e9.af8da"]]},{"id":"507261e9.af8da","type":"later","name":"","schedule":"","x":436,"y":196,"z":"cb2e612f.34d1a","wires":[["d8bf725e.27409","db2fa266.24d06"]]},{"id":"d8bf725e.27409","type":"debug","name":"","active":true,"console":"false","complete":"false","x":593,"y":196,"z":"cb2e612f.34d1a","wires":[]},{"id":"db2fa266.24d06","type":"function","name":"Run schedule 2 times","func":"if (msg.later.count >= 2) {\n    delete msg.payload; \n    return msg;\n} else {\n    return;\n}\n","outputs":1,"valid":true,"x":442,"y":304,"z":"cb2e612f.34d1a","wires":[["507261e9.af8da"]]}]

Author

• Dean Sellers

License

The MIT License (MIT)

Copyright (c) 2015 Lighthouse Automation <[email protected]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.