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node-red-contrib-webthingsio

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Set/get properties, execute actions and inject on events of your WebThings

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module.exports = function(RED) { function WebthingsioGetPropertyNode(config) { RED.nodes.createNode(this, config); if (!config.gateway) { this.error(RED._('webthingsio-get-property.gatewayMissing')); return; } this.gateway = RED.nodes.getNode(config.gateway); if (!this.gateway) { this.error(RED._('webthingsio-get-property.gatewayNotFound')); return; } if (!this.gateway.webthingsEmitter) { // eslint-disable-next-line max-len this.error(RED._('webthingsio-get-property.webthingsClientNotFound')); return; } this.gateway.webthingsEmitter.on('connected', () => { this.status({ fill: 'green', shape: 'dot', text: 'node-red:common.status.connected', }); }); this.gateway.webthingsEmitter.on('disconnected', () => { this.status({ fill: 'red', shape: 'ring', text: 'node-red:common.status.disconnected', }); }); this.on('input', async (msg, send, done) => { if (typeof config.thing !== 'string') { if (done) { done(RED._('webthingsio-get-property.thingNameInvalid')); } else { this.error( RED._('webthingsio-get-property.thingNameInvalid'), msg, ); } return; } const decodedThingId = decodeURIComponent(config.thing); if (typeof config.property !== 'string') { if (done) { done(RED._('webthingsio-get-property.propertyNameInvalid')); } else { this.error( RED._('webthingsio-get-property.propertyNameInvalid'), msg, ); } return; } let value; try { value = await this.gateway.webthingsEmitter.getProperty( decodedThingId, config.property, ); } catch (ex) { const e = typeof ex === 'string' ? ex : JSON.stringify(ex); if (done) { done( RED._('webthingsio-get-property.getPropertyFailed') .replace('%error', e), ); } else { this.error( RED._('webthingsio-get-property.getPropertyFailed') .replace('%error', e), msg, ); } return; } msg.payload = value; send(msg); done(); }); } RED.nodes.registerType( 'webthingsio-get-property', WebthingsioGetPropertyNode, ); };