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/**
* Copyright 2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
// If you use this as a template, update the copyright with your own name.
// Sample Node-RED node file
module.exports = function(RED) {
"use strict";
// require any external libraries we may need....
//var foo = require("foo-library");
// The main node definition - most things happen in here
function SampleNode(n) {
// Create a RED node
RED.nodes.createNode(this,n);
// Store local copies of the node configuration (as defined in the .html)
this.topic = n.topic;
// Do whatever you need to do in here - declare callbacks etc
// Note: this sample doesn't do anything much - it will only send
// this message once at startup...
// Look at other real nodes for some better ideas of what to do....
var msg = {};
msg.topic = this.topic;
msg.payload = "Hello world !"
// send out the message to the rest of the workspace.
this.send(msg);
// respond to inputs....
this.on('input', function (msg) {
node.warn("I saw a payload: "+msg.payload);
// in this example just send it straight on... should process it here really
this.send(msg);
});
this.on("close", function() {
// Called when the node is shutdown - eg on redeploy.
// Allows ports to be closed, connections dropped etc.
// eg: this.client.disconnect();
});
}
// Register the node by name. This must be called before overriding any of the
// Node functions.
RED.nodes.registerType("sample",SampleNode);
}
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