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[MQTT] Try to improve error handling

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This commit is contained in:
Louis Lam 2022-01-13 12:42:34 +08:00
parent 6272514820
commit 227bbdea2f
2 changed files with 40 additions and 31 deletions
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2
server/model/monitor.js
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@ -351,7 +351,7 @@ class Monitor extends BeanModel {
}
} else if (this.type === "mqtt") {
try {
bean.msg = await mqttAsync(this.url, this.mqttTopic, this.mqttSuccessMessage, {
bean.msg = await mqttAsync(this.hostname, this.mqttTopic, this.mqttSuccessMessage, {
mqttPort: this.port,
mqttUsername: this.mqttUsername,
mqttPassword: this.mqttPassword,

69
server/util-server.js
View file

@ -12,7 +12,6 @@ const fs = require("fs");
const nodeJsUtil = require("util");
const mqtt = require("mqtt");
// From ping-lite
exports.WIN = /^win/.test(process.platform);
exports.LIN = /^linux/.test(process.platform);
@ -94,36 +93,46 @@ exports.pingAsync = function (hostname, ipv6 = false) {
exports.mqttAsync = function (hostname, topic, okMessage, options = {}) {
return new Promise((resolve, reject) => {
const { port, username, password, interval = 20 } = options;
try {
// Adds MQTT protocol to the hostname if not already present
if (!/^(?:http|mqtt)s?:\/\//.test(hostname)) {
hostname = "mqtt://" + hostname;
}
let client = mqtt.connect(hostname, {
port,
username,
password
});
client.on("connect", () => {
client.subscribe(topic);
});
client.on("message", (messageTopic, message) => {
if (messageTopic == topic) {
if (message.toString() === okMessage) {
client.end();
resolve(`Topic: ${messageTopic}; Message: ${message.toString()}`);
} else {
client.end();
reject(new Error(`Error; Topic: ${messageTopic}; Message: ${message.toString()}`));
}
}
});
setTimeout(() => {
client.end();
}, interval * 1000);
} catch (error) {
reject(new Error(error));
// Adds MQTT protocol to the hostname if not already present
if (!/^(?:http|mqtt)s?:\/\//.test(hostname)) {
hostname = "mqtt://" + hostname;
}
debug("MQTT connecting");
let client = mqtt.connect(hostname, {
port,
username,
password
});
client.on("connect", () => {
debug("MQTT subscribe topic");
client.subscribe(topic);
});
client.on("error", (error) => {
client.end();
reject(error);
});
client.on("message", (messageTopic, message) => {
if (messageTopic == topic) {
if (message.toString() === okMessage) {
client.end();
resolve(`Topic: ${messageTopic}; Message: ${message.toString()}`);
} else {
client.end();
reject(new Error(`Error; Topic: ${messageTopic}; Message: ${message.toString()}`));
}
}
});
setTimeout(() => {
client.end();
}, interval * 1000);
});
};