console.log("Welcome to Uptime Kuma"); if (! process.env.NODE_ENV) { process.env.NODE_ENV = "production"; } console.log("Node Env: " + process.env.NODE_ENV); const { sleep, debug, TimeLogger, getRandomInt } = require("../src/util"); console.log("Importing Node libraries") const fs = require("fs"); const http = require("http"); const https = require("https"); console.log("Importing 3rd-party libraries") debug("Importing express"); const express = require("express"); debug("Importing socket.io"); const { Server } = require("socket.io"); debug("Importing redbean-node"); const { R } = require("redbean-node"); debug("Importing jsonwebtoken"); const jwt = require("jsonwebtoken"); debug("Importing http-graceful-shutdown"); const gracefulShutdown = require("http-graceful-shutdown"); debug("Importing prometheus-api-metrics"); const prometheusAPIMetrics = require("prometheus-api-metrics"); debug("Importing 2FA Modules"); const notp = require("notp"); const base32 = require("thirty-two"); console.log("Importing this project modules"); debug("Importing Monitor"); const Monitor = require("./model/monitor"); debug("Importing Settings"); const { getSettings, setSettings, setting, initJWTSecret, genSecret } = require("./util-server"); debug("Importing Notification"); const { Notification } = require("./notification"); Notification.init(); debug("Importing Database"); const Database = require("./database"); const { basicAuth } = require("./auth"); const { login } = require("./auth"); const passwordHash = require("./password-hash"); const args = require("args-parser")(process.argv); const checkVersion = require("./check-version"); console.info("Version: " + checkVersion.version); // If host is omitted, the server will accept connections on the unspecified IPv6 address (::) when IPv6 is available and the unspecified IPv4 address (0.0.0.0) otherwise. // Dual-stack support for (::) const hostname = process.env.HOST || args.host; const port = parseInt(process.env.PORT || args.port || 3001); // SSL const sslKey = process.env.SSL_KEY || args["ssl-key"] || undefined; const sslCert = process.env.SSL_CERT || args["ssl-cert"] || undefined; // Demo Mode? const demoMode = args["demo"] || false; if (demoMode) { console.log("==== Demo Mode ===="); } console.log("Creating express and socket.io instance") const app = express(); let server; if (sslKey && sslCert) { console.log("Server Type: HTTPS"); server = https.createServer({ key: fs.readFileSync(sslKey), cert: fs.readFileSync(sslCert) }, app); } else { console.log("Server Type: HTTP"); server = http.createServer(app); } const io = new Server(server); module.exports.io = io; // Must be after io instantiation const { sendNotificationList, sendHeartbeatList, sendImportantHeartbeatList } = require("./client"); app.use(express.json()); /** * Total WebSocket client connected to server currently, no actual use * @type {number} */ let totalClient = 0; /** * Use for decode the auth object * @type {null} */ let jwtSecret = null; /** * Main monitor list * @type {{}} */ let monitorList = {}; /** * Show Setup Page * @type {boolean} */ let needSetup = false; /** * Cache Index HTML * @type {string} */ let indexHTML = fs.readFileSync("./dist/index.html").toString(); (async () => { Database.init(args); await initDatabase(); console.log("Adding route") // Normal Router here // Robots.txt app.get("/robots.txt", async (_request, response) => { let txt = "User-agent: *\nDisallow:"; if (! await setting("searchEngineIndex")) { txt += " /"; } response.setHeader("Content-Type", "text/plain"); response.send(txt); }); // Basic Auth Router here // Prometheus API metrics /metrics // With Basic Auth using the first user's username/password app.get("/metrics", basicAuth, prometheusAPIMetrics()); app.use("/", express.static("dist")); app.get("/.well-known/change-password", async (_, response) => { response.redirect("https://github.com/louislam/uptime-kuma/wiki/Reset-Password-via-CLI"); }); // Universal Route Handler, must be at the end app.get("*", async (_request, response) => { response.send(indexHTML); }); console.log("Adding socket handler") io.on("connection", async (socket) => { socket.emit("info", { version: checkVersion.version, latestVersion: checkVersion.latestVersion, }) totalClient++; if (needSetup) { console.log("Redirect to setup page") socket.emit("setup") } socket.on("disconnect", () => { totalClient--; }); // *************************** // Public API // *************************** socket.on("loginByToken", async (token, callback) => { try { let decoded = jwt.verify(token, jwtSecret); console.log("Username from JWT: " + decoded.username) let user = await R.findOne("user", " username = ? AND active = 1 ", [ decoded.username, ]) if (user) { debug("afterLogin") afterLogin(socket, user) debug("afterLogin ok") callback({ ok: true, }) } else { callback({ ok: false, msg: "The user is inactive or deleted.", }) } } catch (error) { callback({ ok: false, msg: "Invalid token.", }) } }); socket.on("login", async (data, callback) => { console.log("Login") let user = await login(data.username, data.password) if (user) { afterLogin(socket, user) if (user.twofaStatus == 0) { callback({ ok: true, token: jwt.sign({ username: data.username, }, jwtSecret), }) } if (user.twofaStatus == 1 && !data.token) { callback({ tokenRequired: true, }) } if (data.token) { let verify = notp.totp.verify(data.token, user.twofa_secret); if (verify && verify.delta == 0) { callback({ ok: true, token: jwt.sign({ username: data.username, }, jwtSecret), }) } else { callback({ ok: false, msg: "Invalid Token!", }) } } } else { callback({ ok: false, msg: "Incorrect username or password.", }) } }); socket.on("logout", async (callback) => { socket.leave(socket.userID) socket.userID = null; callback(); }); socket.on("prepare2FA", async (callback) => { try { checkLogin(socket) let user = await R.findOne("user", " id = ? AND active = 1 ", [ socket.userID, ]) if (user.twofa_status == 0) { let newSecret = await genSecret() let encodedSecret = base32.encode(newSecret); let uri = `otpauth://totp/Uptime%20Kuma:${user.username}?secret=${encodedSecret}`; await R.exec("UPDATE `user` SET twofa_secret = ? WHERE id = ? ", [ newSecret, socket.userID, ]); callback({ ok: true, uri: uri, }) } else { callback({ ok: false, msg: "2FA is already enabled.", }) } } catch (error) { callback({ ok: false, msg: "Error while trying to prepare 2FA.", }) } }); socket.on("save2FA", async (callback) => { try { checkLogin(socket) await R.exec("UPDATE `user` SET twofa_status = 1 WHERE id = ? ", [ socket.userID, ]); callback({ ok: true, msg: "2FA Enabled.", }) } catch (error) { callback({ ok: false, msg: "Error while trying to change 2FA.", }) } }); socket.on("disable2FA", async (callback) => { try { checkLogin(socket) await R.exec("UPDATE `user` SET twofa_status = 0 WHERE id = ? ", [ socket.userID, ]); callback({ ok: true, msg: "2FA Disabled.", }) } catch (error) { callback({ ok: false, msg: "Error while trying to change 2FA.", }) } }); socket.on("verifyToken", async (token, callback) => { let user = await R.findOne("user", " id = ? AND active = 1 ", [ socket.userID, ]) let verify = notp.totp.verify(token, user.twofa_secret); if (verify && verify.delta == 0) { callback({ ok: true, valid: true, }) } else { callback({ ok: false, msg: "Invalid Token.", valid: false, }) } }); socket.on("twoFAStatus", async (callback) => { checkLogin(socket) try { let user = await R.findOne("user", " id = ? AND active = 1 ", [ socket.userID, ]) if (user.twofa_status == 1) { callback({ ok: true, status: true, }) } else { callback({ ok: true, status: false, }) } } catch (error) { callback({ ok: false, msg: "Error while trying to get 2FA status.", }) } }); socket.on("needSetup", async (callback) => { callback(needSetup); }); socket.on("setup", async (username, password, callback) => { try { if ((await R.count("user")) !== 0) { throw new Error("Uptime Kuma has been setup. If you want to setup again, please delete the database.") } let user = R.dispense("user") user.username = username; user.password = passwordHash.generate(password) await R.store(user) needSetup = false; callback({ ok: true, msg: "Added Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); // *************************** // Auth Only API // *************************** // Add a new monitor socket.on("add", async (monitor, callback) => { try { checkLogin(socket) let bean = R.dispense("monitor") let notificationIDList = monitor.notificationIDList; delete monitor.notificationIDList; monitor.accepted_statuscodes_json = JSON.stringify(monitor.accepted_statuscodes); delete monitor.accepted_statuscodes; bean.import(monitor) bean.user_id = socket.userID await R.store(bean) await updateMonitorNotification(bean.id, notificationIDList) await startMonitor(socket.userID, bean.id); await sendMonitorList(socket); callback({ ok: true, msg: "Added Successfully.", monitorID: bean.id, }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); // Edit a monitor socket.on("editMonitor", async (monitor, callback) => { try { checkLogin(socket) let bean = await R.findOne("monitor", " id = ? ", [ monitor.id ]) if (bean.user_id !== socket.userID) { throw new Error("Permission denied.") } bean.name = monitor.name bean.type = monitor.type bean.url = monitor.url bean.interval = monitor.interval bean.retryInterval = monitor.retryInterval; bean.hostname = monitor.hostname; bean.maxretries = monitor.maxretries; bean.port = monitor.port; bean.keyword = monitor.keyword; bean.ignoreTls = monitor.ignoreTls; bean.upsideDown = monitor.upsideDown; bean.maxredirects = monitor.maxredirects; bean.accepted_statuscodes_json = JSON.stringify(monitor.accepted_statuscodes); bean.dns_resolve_type = monitor.dns_resolve_type; bean.dns_resolve_server = monitor.dns_resolve_server; await R.store(bean) await updateMonitorNotification(bean.id, monitor.notificationIDList) if (bean.active) { await restartMonitor(socket.userID, bean.id) } await sendMonitorList(socket); callback({ ok: true, msg: "Saved.", monitorID: bean.id, }); } catch (e) { console.error(e) callback({ ok: false, msg: e.message, }); } }); socket.on("getMonitorList", async (callback) => { try { checkLogin(socket) await sendMonitorList(socket); callback({ ok: true, }); } catch (e) { console.error(e) callback({ ok: false, msg: e.message, }); } }); socket.on("getMonitor", async (monitorID, callback) => { try { checkLogin(socket) console.log(`Get Monitor: ${monitorID} User ID: ${socket.userID}`) let bean = await R.findOne("monitor", " id = ? AND user_id = ? ", [ monitorID, socket.userID, ]) callback({ ok: true, monitor: await bean.toJSON(), }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); // Start or Resume the monitor socket.on("resumeMonitor", async (monitorID, callback) => { try { checkLogin(socket) await startMonitor(socket.userID, monitorID); await sendMonitorList(socket); callback({ ok: true, msg: "Resumed Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("pauseMonitor", async (monitorID, callback) => { try { checkLogin(socket) await pauseMonitor(socket.userID, monitorID) await sendMonitorList(socket); callback({ ok: true, msg: "Paused Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("deleteMonitor", async (monitorID, callback) => { try { checkLogin(socket) console.log(`Delete Monitor: ${monitorID} User ID: ${socket.userID}`) if (monitorID in monitorList) { monitorList[monitorID].stop(); delete monitorList[monitorID] } await R.exec("DELETE FROM monitor WHERE id = ? AND user_id = ? ", [ monitorID, socket.userID, ]); callback({ ok: true, msg: "Deleted Successfully.", }); await sendMonitorList(socket); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("getTags", async (callback) => { try { checkLogin(socket) const list = await R.findAll("tag") callback({ ok: true, tags: list.map(bean => bean.toJSON()), }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("addTag", async (tag, callback) => { try { checkLogin(socket) let bean = R.dispense("tag") bean.name = tag.name bean.color = tag.color await R.store(bean) callback({ ok: true, tag: await bean.toJSON(), }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("editTag", async (tag, callback) => { try { checkLogin(socket) let bean = await R.findOne("monitor", " id = ? ", [ tag.id ]) bean.name = tag.name bean.color = tag.color await R.store(bean) callback({ ok: true, tag: await bean.toJSON(), }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("deleteTag", async (tagID, callback) => { try { checkLogin(socket) await R.exec("DELETE FROM tag WHERE id = ? ", [ tagID ]) callback({ ok: true, msg: "Deleted Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("addMonitorTag", async (tagID, monitorID, value, callback) => { try { checkLogin(socket) await R.exec("INSERT INTO monitor_tag (tag_id, monitor_id, value) VALUES (?, ?, ?)", [ tagID, monitorID, value, ]) callback({ ok: true, msg: "Added Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("editMonitorTag", async (tagID, monitorID, value, callback) => { try { checkLogin(socket) await R.exec("UPDATE monitor_tag SET value = ? WHERE tag_id = ? AND monitor_id = ?", [ value, tagID, monitorID, ]) callback({ ok: true, msg: "Edited Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("deleteMonitorTag", async (tagID, monitorID, value, callback) => { try { checkLogin(socket) await R.exec("DELETE FROM monitor_tag WHERE tag_id = ? AND monitor_id = ? AND value = ?", [ tagID, monitorID, value, ]) // Cleanup unused Tags await R.exec("delete from tag where ( select count(*) from monitor_tag mt where tag.id = mt.tag_id ) = 0"); callback({ ok: true, msg: "Deleted Successfully.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("changePassword", async (password, callback) => { try { checkLogin(socket) if (! password.currentPassword) { throw new Error("Invalid new password") } let user = await R.findOne("user", " id = ? AND active = 1 ", [ socket.userID, ]) if (user && passwordHash.verify(password.currentPassword, user.password)) { user.resetPassword(password.newPassword); callback({ ok: true, msg: "Password has been updated successfully.", }) } else { throw new Error("Incorrect current password") } } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("getSettings", async (callback) => { try { checkLogin(socket) callback({ ok: true, data: await getSettings("general"), }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("setSettings", async (data, callback) => { try { checkLogin(socket) await setSettings("general", data) callback({ ok: true, msg: "Saved" }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); // Add or Edit socket.on("addNotification", async (notification, notificationID, callback) => { try { checkLogin(socket) let notificationBean = await Notification.save(notification, notificationID, socket.userID) await sendNotificationList(socket) callback({ ok: true, msg: "Saved", id: notificationBean.id, }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("deleteNotification", async (notificationID, callback) => { try { checkLogin(socket) await Notification.delete(notificationID, socket.userID) await sendNotificationList(socket) callback({ ok: true, msg: "Deleted", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("testNotification", async (notification, callback) => { try { checkLogin(socket) let msg = await Notification.send(notification, notification.name + " Testing") callback({ ok: true, msg, }); } catch (e) { console.error(e) callback({ ok: false, msg: e.message, }); } }); socket.on("checkApprise", async (callback) => { try { checkLogin(socket) callback(Notification.checkApprise()); } catch (e) { callback(false); } }); socket.on("uploadBackup", async (uploadedJSON, importHandle, callback) => { try { checkLogin(socket) let backupData = JSON.parse(uploadedJSON); console.log(`Importing Backup, User ID: ${socket.userID}, Version: ${backupData.version}`) let notificationListData = backupData.notificationList; let monitorListData = backupData.monitorList; if (importHandle == "overwrite") { for (let id in monitorList) { let monitor = monitorList[id] await monitor.stop() } await R.exec("DELETE FROM heartbeat"); await R.exec("DELETE FROM monitor_notification"); await R.exec("DELETE FROM monitor_tls_info"); await R.exec("DELETE FROM notification"); await R.exec("DELETE FROM monitor"); } if (notificationListData.length >= 1) { let notificationNameList = await R.getAll("SELECT name FROM notification"); let notificationNameListString = JSON.stringify(notificationNameList); for (let i = 0; i < notificationListData.length; i++) { if ((importHandle == "skip" && notificationNameListString.includes(notificationListData[i].name) == false) || importHandle == "keep" || importHandle == "overwrite") { let notification = JSON.parse(notificationListData[i].config); await Notification.save(notification, null, socket.userID) } } } if (monitorListData.length >= 1) { let monitorNameList = await R.getAll("SELECT name FROM monitor"); let monitorNameListString = JSON.stringify(monitorNameList); for (let i = 0; i < monitorListData.length; i++) { if ((importHandle == "skip" && monitorNameListString.includes(monitorListData[i].name) == false) || importHandle == "keep" || importHandle == "overwrite") { let monitor = { name: monitorListData[i].name, type: monitorListData[i].type, url: monitorListData[i].url, interval: monitorListData[i].interval, hostname: monitorListData[i].hostname, maxretries: monitorListData[i].maxretries, port: monitorListData[i].port, keyword: monitorListData[i].keyword, ignoreTls: monitorListData[i].ignoreTls, upsideDown: monitorListData[i].upsideDown, maxredirects: monitorListData[i].maxredirects, accepted_statuscodes: monitorListData[i].accepted_statuscodes, dns_resolve_type: monitorListData[i].dns_resolve_type, dns_resolve_server: monitorListData[i].dns_resolve_server, notificationIDList: {}, } let bean = R.dispense("monitor") let notificationIDList = monitor.notificationIDList; delete monitor.notificationIDList; monitor.accepted_statuscodes_json = JSON.stringify(monitor.accepted_statuscodes); delete monitor.accepted_statuscodes; bean.import(monitor) bean.user_id = socket.userID await R.store(bean) await updateMonitorNotification(bean.id, notificationIDList) if (monitorListData[i].active == 1) { await startMonitor(socket.userID, bean.id); } else { await pauseMonitor(socket.userID, bean.id); } } } await sendNotificationList(socket) await sendMonitorList(socket); } callback({ ok: true, msg: "Backup successfully restored.", }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("clearEvents", async (monitorID, callback) => { try { checkLogin(socket) console.log(`Clear Events Monitor: ${monitorID} User ID: ${socket.userID}`) await R.exec("UPDATE heartbeat SET msg = ?, important = ? WHERE monitor_id = ? ", [ "", "0", monitorID, ]); await sendImportantHeartbeatList(socket, monitorID, true, true); callback({ ok: true, }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("clearHeartbeats", async (monitorID, callback) => { try { checkLogin(socket) console.log(`Clear Heartbeats Monitor: ${monitorID} User ID: ${socket.userID}`) await R.exec("DELETE FROM heartbeat WHERE monitor_id = ?", [ monitorID ]); await sendHeartbeatList(socket, monitorID, true, true); callback({ ok: true, }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); socket.on("clearStatistics", async (callback) => { try { checkLogin(socket) console.log(`Clear Statistics User ID: ${socket.userID}`) await R.exec("DELETE FROM heartbeat"); callback({ ok: true, }); } catch (e) { callback({ ok: false, msg: e.message, }); } }); debug("added all socket handlers") // *************************** // Better do anything after added all socket handlers here // *************************** debug("check auto login") if (await setting("disableAuth")) { console.log("Disabled Auth: auto login to admin") afterLogin(socket, await R.findOne("user")) socket.emit("autoLogin") } else { debug("need auth") } }); console.log("Init the server") server.once("error", async (err) => { console.error("Cannot listen: " + err.message); await Database.close(); }); server.listen(port, hostname, () => { if (hostname) { console.log(`Listening on ${hostname}:${port}`); } else { console.log(`Listening on ${port}`); } startMonitors(); checkVersion.startInterval(); }); })(); async function updateMonitorNotification(monitorID, notificationIDList) { await R.exec("DELETE FROM monitor_notification WHERE monitor_id = ? ", [ monitorID, ]) for (let notificationID in notificationIDList) { if (notificationIDList[notificationID]) { let relation = R.dispense("monitor_notification"); relation.monitor_id = monitorID; relation.notification_id = notificationID; await R.store(relation) } } } async function checkOwner(userID, monitorID) { let row = await R.getRow("SELECT id FROM monitor WHERE id = ? AND user_id = ? ", [ monitorID, userID, ]) if (! row) { throw new Error("You do not own this monitor."); } } async function sendMonitorList(socket) { let list = await getMonitorJSONList(socket.userID); io.to(socket.userID).emit("monitorList", list) return list; } async function afterLogin(socket, user) { socket.userID = user.id; socket.join(user.id) let monitorList = await sendMonitorList(socket) sendNotificationList(socket) await sleep(500); for (let monitorID in monitorList) { await sendHeartbeatList(socket, monitorID); } for (let monitorID in monitorList) { await sendImportantHeartbeatList(socket, monitorID); } for (let monitorID in monitorList) { await Monitor.sendStats(io, monitorID, user.id) } } async function getMonitorJSONList(userID) { let result = {}; let monitorList = await R.find("monitor", " user_id = ? ORDER BY weight DESC, name", [ userID, ]) for (let monitor of monitorList) { result[monitor.id] = await monitor.toJSON(); } return result; } function checkLogin(socket) { if (! socket.userID) { throw new Error("You are not logged in."); } } async function initDatabase() { if (! fs.existsSync(Database.path)) { console.log("Copying Database") fs.copyFileSync(Database.templatePath, Database.path); } console.log("Connecting to Database") await Database.connect(); console.log("Connected") // Patch the database await Database.patch() let jwtSecretBean = await R.findOne("setting", " `key` = ? ", [ "jwtSecret", ]); if (! jwtSecretBean) { console.log("JWT secret is not found, generate one."); jwtSecretBean = await initJWTSecret(); console.log("Stored JWT secret into database"); } else { console.log("Load JWT secret from database."); } // If there is no record in user table, it is a new Uptime Kuma instance, need to setup if ((await R.count("user")) === 0) { console.log("No user, need setup") needSetup = true; } jwtSecret = jwtSecretBean.value; } async function startMonitor(userID, monitorID) { await checkOwner(userID, monitorID) console.log(`Resume Monitor: ${monitorID} User ID: ${userID}`) await R.exec("UPDATE monitor SET active = 1 WHERE id = ? AND user_id = ? ", [ monitorID, userID, ]); let monitor = await R.findOne("monitor", " id = ? ", [ monitorID, ]) if (monitor.id in monitorList) { monitorList[monitor.id].stop(); } monitorList[monitor.id] = monitor; monitor.start(io) } async function restartMonitor(userID, monitorID) { return await startMonitor(userID, monitorID) } async function pauseMonitor(userID, monitorID) { await checkOwner(userID, monitorID) console.log(`Pause Monitor: ${monitorID} User ID: ${userID}`) await R.exec("UPDATE monitor SET active = 0 WHERE id = ? AND user_id = ? ", [ monitorID, userID, ]); if (monitorID in monitorList) { monitorList[monitorID].stop(); } } /** * Resume active monitors */ async function startMonitors() { let list = await R.find("monitor", " active = 1 ") for (let monitor of list) { monitorList[monitor.id] = monitor; } for (let monitor of list) { monitor.start(io); // Give some delays, so all monitors won't make request at the same moment when just start the server. await sleep(getRandomInt(300, 1000)); } } async function shutdownFunction(signal) { console.log("Shutdown requested"); console.log("Called signal: " + signal); console.log("Stopping all monitors") for (let id in monitorList) { let monitor = monitorList[id] monitor.stop() } await sleep(2000); await Database.close(); } function finalFunction() { console.log("Graceful shutdown successfully!"); } gracefulShutdown(server, { signals: "SIGINT SIGTERM", timeout: 30000, // timeout: 30 secs development: false, // not in dev mode forceExit: true, // triggers process.exit() at the end of shutdown process onShutdown: shutdownFunction, // shutdown function (async) - e.g. for cleanup DB, ... finally: finalFunction, // finally function (sync) - e.g. for logging }); // Catch unexpected errors here process.addListener("unhandledRejection", (error, promise) => { console.trace(error); console.error("If you keep encountering errors, please report to https://github.com/louislam/uptime-kuma/issues"); });