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