text: /**
   * 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;
  
          // copy "this" object in case we need it in context of callbacks of other functions.
          var node = this;
  
          // 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 message will get sent at startup so you may not see it in a debug node.
          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
              node.send(msg);
          });
  
          this.on("close", function() {
              // Called when the node is shutdown - eg on redeploy.
              // Allows ports to be closed, connections dropped etc.
              // eg: node.client.disconnect();
          });
      }
  
      // Register the node by name. This must be called before overriding any of the
      // Node functions.
      RED.nodes.registerType("sample",SampleNode);
  
  }
  