node-red-contrib-state/lib/setState.js

Shared state with persistence, notification, and history

/**
* The MIT License
* 
* Copyright (c) 2020, Loren West and other contributors
* 
* 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.
**/

/**
 * Set State
 * Node-Red Node: setState
 * Node-Red Package: shared-state
 */

let RED;
const setState = module.exports = function(red) {
  RED = red;
  RED.nodes.registerType("set-shared-state", setStateNode);
}

// The Node-RED node for setState
// Essentially a getState with a setter
class setStateNode extends require('./getState').getStateNode {

  constructor(config) {
    super(config);
    var node = this;

    // Process SET
    node.on('input', function(msg) {
      node.sharedState.update(msg.payload, msg);
    });

  }

}