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adding publish operation

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This commit is contained in:
Simon Arnell 2024-12-22 00:46:52 +00:00
parent 3822c6c520
commit 17e16af39a
4 changed files with 349 additions and 13 deletions
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65
src/core/operations/MQTTPublish.mjs Normal file
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/**
* @author Configured Things Ltd. [getconfigured@configuredthings.com]
* @copyright Crown Copyright 2024
* @license Apache-2.0
*/
import mqtt from "mqtt";
import Operation from "../Operation.mjs";
import OperationError from "../errors/OperationError.mjs";
/**
* MQTT Publish operation
*/
class MQTTPublish extends Operation {
/**
* MQTTPublish constructor
*/
constructor() {
super();
this.name = "MQTT Publish";
this.module = "MQTT";
this.description = "Publishes a message to an MQTT broker";
this.infoURL = "https://en.wikipedia.org/wiki/MQTT";
this.inputType = "String";
this.outputType = "String";
this.args = [
{
name: "MQTT broker URL",
type: "string",
value: ""
},
{
name: "Topic",
type: "string",
value: ""
}
];
}
/**
* @param {String} input
* @param {Object[]} args
* @returns {String}
*/
run(input, args) {
const [broker, topic] = args;
const mqttUrlRegex = /^(ws|mqtt)s?:\/\/(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]))*|([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])(\.([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])){3}|(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])))(:([1-9][0-9]{0,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5]))?$/;
const mqttTopicRegex = /^[\u0000-\uFFFF]+(\/[\u0000-\uFFFF]+)+$/;
if (mqttUrlRegex.test(broker)) {
if (mqttTopicRegex.test(broker)) {
const client = mqtt.connect(broker);
client.on("connect", () => {
client.publish(topic, input);
client.end();
});
} else throw new OperationError(`Invalid MQTT topic name - ${topic}`);
} else throw new OperationError(`Invalid MQTT broker URL - ${broker}`);
return input;
}
}
export default MQTTPublish;