mirror of https://github.com/louislam/uptime-kuma
				
				
				
			
		
			
				
	
	
		
			815 lines
		
	
	
		
			30 KiB
		
	
	
	
		
			JavaScript
		
	
	
			
		
		
	
	
			815 lines
		
	
	
		
			30 KiB
		
	
	
	
		
			JavaScript
		
	
	
const https = require("https");
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						|
const dayjs = require("dayjs");
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const utc = require("dayjs/plugin/utc");
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let timezone = require("dayjs/plugin/timezone");
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dayjs.extend(utc);
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dayjs.extend(timezone);
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const axios = require("axios");
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const { Prometheus } = require("../prometheus");
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const { log, UP, DOWN, PENDING, flipStatus, TimeLogger } = require("../../src/util");
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const { tcping, ping, dnsResolve, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, errorLog } = require("../util-server");
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const { R } = require("redbean-node");
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const { BeanModel } = require("redbean-node/dist/bean-model");
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const { Notification } = require("../notification");
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const { Proxy } = require("../proxy");
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const { demoMode } = require("../config");
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const version = require("../../package.json").version;
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const apicache = require("../modules/apicache");
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/**
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 * status:
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 *      0 = DOWN
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 *      1 = UP
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 *      2 = PENDING
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 */
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class Monitor extends BeanModel {
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    /**
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     * Return an object that ready to parse to JSON for public
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     * Only show necessary data to public
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     */
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    async toPublicJSON(showTags = false) {
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        let obj = {
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            id: this.id,
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            name: this.name,
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        };
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        if (showTags) {
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            obj.tags = await this.getTags();
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        }
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        return obj;
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    }
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    /**
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     * Return an object that ready to parse to JSON
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     */
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    async toJSON() {
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        let notificationIDList = {};
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        let list = await R.find("monitor_notification", " monitor_id = ? ", [
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            this.id,
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        ]);
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        for (let bean of list) {
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            notificationIDList[bean.notification_id] = true;
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        }
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        const tags = await this.getTags();
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        return {
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            id: this.id,
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            name: this.name,
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            url: this.url,
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            method: this.method,
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            body: this.body,
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            headers: this.headers,
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            basic_auth_user: this.basic_auth_user,
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            basic_auth_pass: this.basic_auth_pass,
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            hostname: this.hostname,
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            port: this.port,
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            maxretries: this.maxretries,
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            weight: this.weight,
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            active: this.active,
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            type: this.type,
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            interval: this.interval,
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            retryInterval: this.retryInterval,
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            keyword: this.keyword,
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            expiryNotification: this.isEnabledExpiryNotification(),
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            ignoreTls: this.getIgnoreTls(),
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            upsideDown: this.isUpsideDown(),
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            maxredirects: this.maxredirects,
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            accepted_statuscodes: this.getAcceptedStatuscodes(),
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            dns_resolve_type: this.dns_resolve_type,
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            dns_resolve_server: this.dns_resolve_server,
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            dns_last_result: this.dns_last_result,
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            pushToken: this.pushToken,
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            proxyId: this.proxy_id,
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            notificationIDList,
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            tags: tags,
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        };
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    }
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    async getTags() {
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        return await R.getAll("SELECT mt.*, tag.name, tag.color FROM monitor_tag mt JOIN tag ON mt.tag_id = tag.id WHERE mt.monitor_id = ?", [this.id]);
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    }
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    /**
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     * Encode user and password to Base64 encoding
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     * for HTTP "basic" auth, as per RFC-7617
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     * @returns {string}
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     */
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    encodeBase64(user, pass) {
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        return Buffer.from(user + ":" + pass).toString("base64");
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    }
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    isEnabledExpiryNotification() {
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        return Boolean(this.expiryNotification);
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    }
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    /**
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     * Parse to boolean
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     * @returns {boolean}
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     */
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    getIgnoreTls() {
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        return Boolean(this.ignoreTls);
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    }
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    /**
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     * Parse to boolean
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     * @returns {boolean}
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     */
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    isUpsideDown() {
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        return Boolean(this.upsideDown);
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    }
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    getAcceptedStatuscodes() {
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        return JSON.parse(this.accepted_statuscodes_json);
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    }
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    start(io) {
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        let previousBeat = null;
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        let retries = 0;
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        let prometheus = new Prometheus(this);
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        const beat = async () => {
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            let beatInterval = this.interval;
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            if (! beatInterval) {
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                beatInterval = 1;
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            }
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            if (demoMode) {
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                if (beatInterval < 20) {
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                    console.log("beat interval too low, reset to 20s");
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                    beatInterval = 20;
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                }
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            }
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            // Expose here for prometheus update
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            // undefined if not https
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            let tlsInfo = undefined;
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            if (! previousBeat) {
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                previousBeat = await R.findOne("heartbeat", " monitor_id = ? ORDER BY time DESC", [
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                    this.id,
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                ]);
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            }
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            const isFirstBeat = !previousBeat;
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            let bean = R.dispense("heartbeat");
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            bean.monitor_id = this.id;
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            bean.time = R.isoDateTime(dayjs.utc());
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            bean.status = DOWN;
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            if (this.isUpsideDown()) {
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                bean.status = flipStatus(bean.status);
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            }
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            // Duration
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            if (! isFirstBeat) {
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                bean.duration = dayjs(bean.time).diff(dayjs(previousBeat.time), "second");
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            } else {
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                bean.duration = 0;
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            }
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            try {
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                if (this.type === "http" || this.type === "keyword") {
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                    // Do not do any queries/high loading things before the "bean.ping"
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                    let startTime = dayjs().valueOf();
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                    // HTTP basic auth
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                    let basicAuthHeader = {};
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                    if (this.basic_auth_user) {
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                        basicAuthHeader = {
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                            "Authorization": "Basic " + this.encodeBase64(this.basic_auth_user, this.basic_auth_pass),
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                        };
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                    }
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                    const httpsAgentOptions = {
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                        maxCachedSessions: 0, // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
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                        rejectUnauthorized: !this.getIgnoreTls(),
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                    };
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                    log.debug("monitor", `[${this.name}] Prepare Options for axios`);
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                    const options = {
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                        url: this.url,
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                        method: (this.method || "get").toLowerCase(),
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                        ...(this.body ? { data: JSON.parse(this.body) } : {}),
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                        timeout: this.interval * 1000 * 0.8,
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                        headers: {
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                            "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
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                            "User-Agent": "Uptime-Kuma/" + version,
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                            ...(this.headers ? JSON.parse(this.headers) : {}),
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                            ...(basicAuthHeader),
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                        },
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                        maxRedirects: this.maxredirects,
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                        validateStatus: (status) => {
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                            return checkStatusCode(status, this.getAcceptedStatuscodes());
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                        },
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                    };
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                    if (this.proxy_id) {
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                        const proxy = await R.load("proxy", this.proxy_id);
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                        if (proxy && proxy.active) {
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                            const { httpAgent, httpsAgent } = Proxy.createAgents(proxy, {
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                                httpsAgentOptions: httpsAgentOptions,
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                            });
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                            options.proxy = false;
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                            options.httpAgent = httpAgent;
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                            options.httpsAgent = httpsAgent;
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                        }
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                    }
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                    if (!options.httpsAgent) {
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                        options.httpsAgent = new https.Agent(httpsAgentOptions);
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                    }
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                    log.debug("monitor", `[${this.name}] Axios Options: ${JSON.stringify(options)}`);
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                    log.debug("monitor", `[${this.name}] Axios Request`);
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                    let res = await axios.request(options);
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                    bean.msg = `${res.status} - ${res.statusText}`;
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                    bean.ping = dayjs().valueOf() - startTime;
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                    // Check certificate if https is used
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                    let certInfoStartTime = dayjs().valueOf();
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                    if (this.getUrl()?.protocol === "https:") {
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                        log.debug("monitor", `[${this.name}] Check cert`);
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                        try {
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                            let tlsInfoObject = checkCertificate(res);
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                            tlsInfo = await this.updateTlsInfo(tlsInfoObject);
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                            if (!this.getIgnoreTls() && this.isEnabledExpiryNotification()) {
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                                log.debug("monitor", `[${this.name}] call sendCertNotification`);
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                                await this.sendCertNotification(tlsInfoObject);
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                            }
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                        } catch (e) {
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						|
                            if (e.message !== "No TLS certificate in response") {
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                                log.error("monitor", "Caught error");
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                                log.error("monitor", e.message);
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                            }
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                        }
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                    }
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                    if (process.env.TIMELOGGER === "1") {
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                        log.debug("monitor", "Cert Info Query Time: " + (dayjs().valueOf() - certInfoStartTime) + "ms");
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                    }
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                    if (process.env.UPTIME_KUMA_LOG_RESPONSE_BODY_MONITOR_ID == this.id) {
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                        log.info("monitor", res.data);
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                    }
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                    if (this.type === "http") {
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                        bean.status = UP;
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                    } else {
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                        let data = res.data;
 | 
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                        // Convert to string for object/array
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						|
                        if (typeof data !== "string") {
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                            data = JSON.stringify(data);
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                        }
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                        if (data.includes(this.keyword)) {
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                            bean.msg += ", keyword is found";
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                            bean.status = UP;
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                        } else {
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                            throw new Error(bean.msg + ", but keyword is not found");
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                        }
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                    }
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                } else if (this.type === "port") {
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                    bean.ping = await tcping(this.hostname, this.port);
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                    bean.msg = "";
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                    bean.status = UP;
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                } else if (this.type === "ping") {
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                    bean.ping = await ping(this.hostname);
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                    bean.msg = "";
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                    bean.status = UP;
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                } else if (this.type === "dns") {
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                    let startTime = dayjs().valueOf();
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                    let dnsMessage = "";
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                    let dnsRes = await dnsResolve(this.hostname, this.dns_resolve_server, this.dns_resolve_type);
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                    bean.ping = dayjs().valueOf() - startTime;
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						|
                    if (this.dns_resolve_type == "A" || this.dns_resolve_type == "AAAA" || this.dns_resolve_type == "TXT") {
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                        dnsMessage += "Records: ";
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						|
                        dnsMessage += dnsRes.join(" | ");
 | 
						|
                    } else if (this.dns_resolve_type == "CNAME" || this.dns_resolve_type == "PTR") {
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                        dnsMessage = dnsRes[0];
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						|
                    } else if (this.dns_resolve_type == "CAA") {
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						|
                        dnsMessage = dnsRes[0].issue;
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						|
                    } else if (this.dns_resolve_type == "MX") {
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                        dnsRes.forEach(record => {
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						|
                            dnsMessage += `Hostname: ${record.exchange} - Priority: ${record.priority} | `;
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                        });
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                        dnsMessage = dnsMessage.slice(0, -2);
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                    } else if (this.dns_resolve_type == "NS") {
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						|
                        dnsMessage += "Servers: ";
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						|
                        dnsMessage += dnsRes.join(" | ");
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						|
                    } else if (this.dns_resolve_type == "SOA") {
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						|
                        dnsMessage += `NS-Name: ${dnsRes.nsname} | Hostmaster: ${dnsRes.hostmaster} | Serial: ${dnsRes.serial} | Refresh: ${dnsRes.refresh} | Retry: ${dnsRes.retry} | Expire: ${dnsRes.expire} | MinTTL: ${dnsRes.minttl}`;
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                    } else if (this.dns_resolve_type == "SRV") {
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						|
                        dnsRes.forEach(record => {
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                            dnsMessage += `Name: ${record.name} | Port: ${record.port} | Priority: ${record.priority} | Weight: ${record.weight} | `;
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                        });
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                        dnsMessage = dnsMessage.slice(0, -2);
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                    }
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						|
                    if (this.dnsLastResult !== dnsMessage) {
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                        R.exec("UPDATE `monitor` SET dns_last_result = ? WHERE id = ? ", [
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                            dnsMessage,
 | 
						|
                            this.id
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                        ]);
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                    }
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                    bean.msg = dnsMessage;
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                    bean.status = UP;
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						|
                } else if (this.type === "push") {      // Type: Push
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						|
                    const time = R.isoDateTime(dayjs.utc().subtract(this.interval, "second"));
 | 
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						|
                    let heartbeatCount = await R.count("heartbeat", " monitor_id = ? AND time > ? ", [
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                        this.id,
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                        time
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                    ]);
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 | 
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                    log.debug("monitor", "heartbeatCount" + heartbeatCount + " " + time);
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 | 
						|
                    if (heartbeatCount <= 0) {
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                        // Fix #922, since previous heartbeat could be inserted by api, it should get from database
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                        previousBeat = await Monitor.getPreviousHeartbeat(this.id);
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 | 
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                        throw new Error("No heartbeat in the time window");
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						|
                    } else {
 | 
						|
                        // No need to insert successful heartbeat for push type, so end here
 | 
						|
                        retries = 0;
 | 
						|
                        this.heartbeatInterval = setTimeout(beat, beatInterval * 1000);
 | 
						|
                        return;
 | 
						|
                    }
 | 
						|
 | 
						|
                } else if (this.type === "steam") {
 | 
						|
                    const steamApiUrl = "https://api.steampowered.com/IGameServersService/GetServerList/v1/";
 | 
						|
                    const steamAPIKey = await setting("steamAPIKey");
 | 
						|
                    const filter = `addr\\${this.hostname}:${this.port}`;
 | 
						|
 | 
						|
                    if (!steamAPIKey) {
 | 
						|
                        throw new Error("Steam API Key not found");
 | 
						|
                    }
 | 
						|
 | 
						|
                    let res = await axios.get(steamApiUrl, {
 | 
						|
                        timeout: this.interval * 1000 * 0.8,
 | 
						|
                        headers: {
 | 
						|
                            "Accept": "*/*",
 | 
						|
                            "User-Agent": "Uptime-Kuma/" + version,
 | 
						|
                        },
 | 
						|
                        httpsAgent: new https.Agent({
 | 
						|
                            maxCachedSessions: 0,      // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
 | 
						|
                            rejectUnauthorized: ! this.getIgnoreTls(),
 | 
						|
                        }),
 | 
						|
                        maxRedirects: this.maxredirects,
 | 
						|
                        validateStatus: (status) => {
 | 
						|
                            return checkStatusCode(status, this.getAcceptedStatuscodes());
 | 
						|
                        },
 | 
						|
                        params: {
 | 
						|
                            filter: filter,
 | 
						|
                            key: steamAPIKey,
 | 
						|
                        }
 | 
						|
                    });
 | 
						|
 | 
						|
                    if (res.data.response && res.data.response.servers && res.data.response.servers.length > 0) {
 | 
						|
                        bean.status = UP;
 | 
						|
                        bean.msg = res.data.response.servers[0].name;
 | 
						|
 | 
						|
                        try {
 | 
						|
                            bean.ping = await ping(this.hostname);
 | 
						|
                        } catch (_) { }
 | 
						|
                    } else {
 | 
						|
                        throw new Error("Server not found on Steam");
 | 
						|
                    }
 | 
						|
 | 
						|
                } else {
 | 
						|
                    bean.msg = "Unknown Monitor Type";
 | 
						|
                    bean.status = PENDING;
 | 
						|
                }
 | 
						|
 | 
						|
                if (this.isUpsideDown()) {
 | 
						|
                    bean.status = flipStatus(bean.status);
 | 
						|
 | 
						|
                    if (bean.status === DOWN) {
 | 
						|
                        throw new Error("Flip UP to DOWN");
 | 
						|
                    }
 | 
						|
                }
 | 
						|
 | 
						|
                retries = 0;
 | 
						|
 | 
						|
            } catch (error) {
 | 
						|
 | 
						|
                bean.msg = error.message;
 | 
						|
 | 
						|
                // If UP come in here, it must be upside down mode
 | 
						|
                // Just reset the retries
 | 
						|
                if (this.isUpsideDown() && bean.status === UP) {
 | 
						|
                    retries = 0;
 | 
						|
 | 
						|
                } else if ((this.maxretries > 0) && (retries < this.maxretries)) {
 | 
						|
                    retries++;
 | 
						|
                    bean.status = PENDING;
 | 
						|
                }
 | 
						|
            }
 | 
						|
 | 
						|
            log.debug("monitor", `[${this.name}] Check isImportant`);
 | 
						|
            let isImportant = Monitor.isImportantBeat(isFirstBeat, previousBeat?.status, bean.status);
 | 
						|
 | 
						|
            // Mark as important if status changed, ignore pending pings,
 | 
						|
            // Don't notify if disrupted changes to up
 | 
						|
            if (isImportant) {
 | 
						|
                bean.important = true;
 | 
						|
 | 
						|
                log.debug("monitor", `[${this.name}] sendNotification`);
 | 
						|
                await Monitor.sendNotification(isFirstBeat, this, bean);
 | 
						|
 | 
						|
                // Clear Status Page Cache
 | 
						|
                log.debug("monitor", `[${this.name}] apicache clear`);
 | 
						|
                apicache.clear();
 | 
						|
 | 
						|
            } else {
 | 
						|
                bean.important = false;
 | 
						|
            }
 | 
						|
 | 
						|
            if (bean.status === UP) {
 | 
						|
                log.info("monitor", `Monitor #${this.id} '${this.name}': Successful Response: ${bean.ping} ms | Interval: ${beatInterval} seconds | Type: ${this.type}`);
 | 
						|
            } else if (bean.status === PENDING) {
 | 
						|
                if (this.retryInterval > 0) {
 | 
						|
                    beatInterval = this.retryInterval;
 | 
						|
                }
 | 
						|
                log.warn("monitor", `Monitor #${this.id} '${this.name}': Pending: ${bean.msg} | Max retries: ${this.maxretries} | Retry: ${retries} | Retry Interval: ${beatInterval} seconds | Type: ${this.type}`);
 | 
						|
            } else {
 | 
						|
                log.warn("monitor", `Monitor #${this.id} '${this.name}': Failing: ${bean.msg} | Interval: ${beatInterval} seconds | Type: ${this.type}`);
 | 
						|
            }
 | 
						|
 | 
						|
            log.debug("monitor", `[${this.name}] Send to socket`);
 | 
						|
            io.to(this.user_id).emit("heartbeat", bean.toJSON());
 | 
						|
            Monitor.sendStats(io, this.id, this.user_id);
 | 
						|
 | 
						|
            log.debug("monitor", `[${this.name}] Store`);
 | 
						|
            await R.store(bean);
 | 
						|
 | 
						|
            log.debug("monitor", `[${this.name}] prometheus.update`);
 | 
						|
            prometheus.update(bean, tlsInfo);
 | 
						|
 | 
						|
            previousBeat = bean;
 | 
						|
 | 
						|
            if (! this.isStop) {
 | 
						|
                log.debug("monitor", `[${this.name}] SetTimeout for next check.`);
 | 
						|
                this.heartbeatInterval = setTimeout(safeBeat, beatInterval * 1000);
 | 
						|
            } else {
 | 
						|
                log.info("monitor", `[${this.name}] isStop = true, no next check.`);
 | 
						|
            }
 | 
						|
 | 
						|
        };
 | 
						|
 | 
						|
        const safeBeat = async () => {
 | 
						|
            try {
 | 
						|
                await beat();
 | 
						|
            } catch (e) {
 | 
						|
                console.trace(e);
 | 
						|
                errorLog(e, false);
 | 
						|
                log.error("monitor", "Please report to https://github.com/louislam/uptime-kuma/issues");
 | 
						|
 | 
						|
                if (! this.isStop) {
 | 
						|
                    log.info("monitor", "Try to restart the monitor");
 | 
						|
                    this.heartbeatInterval = setTimeout(safeBeat, this.interval * 1000);
 | 
						|
                }
 | 
						|
            }
 | 
						|
        };
 | 
						|
 | 
						|
        // Delay Push Type
 | 
						|
        if (this.type === "push") {
 | 
						|
            setTimeout(() => {
 | 
						|
                safeBeat();
 | 
						|
            }, this.interval * 1000);
 | 
						|
        } else {
 | 
						|
            safeBeat();
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    stop() {
 | 
						|
        clearTimeout(this.heartbeatInterval);
 | 
						|
        this.isStop = true;
 | 
						|
 | 
						|
        this.prometheus().remove();
 | 
						|
    }
 | 
						|
 | 
						|
    prometheus() {
 | 
						|
        return new Prometheus(this);
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Helper Method:
 | 
						|
     * returns URL object for further usage
 | 
						|
     * returns null if url is invalid
 | 
						|
     * @returns {null|URL}
 | 
						|
     */
 | 
						|
    getUrl() {
 | 
						|
        try {
 | 
						|
            return new URL(this.url);
 | 
						|
        } catch (_) {
 | 
						|
            return null;
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Store TLS info to database
 | 
						|
     * @param checkCertificateResult
 | 
						|
     * @returns {Promise<object>}
 | 
						|
     */
 | 
						|
    async updateTlsInfo(checkCertificateResult) {
 | 
						|
        let tls_info_bean = await R.findOne("monitor_tls_info", "monitor_id = ?", [
 | 
						|
            this.id,
 | 
						|
        ]);
 | 
						|
 | 
						|
        if (tls_info_bean == null) {
 | 
						|
            tls_info_bean = R.dispense("monitor_tls_info");
 | 
						|
            tls_info_bean.monitor_id = this.id;
 | 
						|
        } else {
 | 
						|
 | 
						|
            // Clear sent history if the cert changed.
 | 
						|
            try {
 | 
						|
                let oldCertInfo = JSON.parse(tls_info_bean.info_json);
 | 
						|
 | 
						|
                let isValidObjects = oldCertInfo && oldCertInfo.certInfo && checkCertificateResult && checkCertificateResult.certInfo;
 | 
						|
 | 
						|
                if (isValidObjects) {
 | 
						|
                    if (oldCertInfo.certInfo.fingerprint256 !== checkCertificateResult.certInfo.fingerprint256) {
 | 
						|
                        log.debug("monitor", "Resetting sent_history");
 | 
						|
                        await R.exec("DELETE FROM notification_sent_history WHERE type = 'certificate' AND monitor_id = ?", [
 | 
						|
                            this.id
 | 
						|
                        ]);
 | 
						|
                    } else {
 | 
						|
                        log.debug("monitor", "No need to reset sent_history");
 | 
						|
                        log.debug("monitor", oldCertInfo.certInfo.fingerprint256);
 | 
						|
                        log.debug("monitor", checkCertificateResult.certInfo.fingerprint256);
 | 
						|
                    }
 | 
						|
                } else {
 | 
						|
                    log.debug("monitor", "Not valid object");
 | 
						|
                }
 | 
						|
            } catch (e) { }
 | 
						|
 | 
						|
        }
 | 
						|
 | 
						|
        tls_info_bean.info_json = JSON.stringify(checkCertificateResult);
 | 
						|
        await R.store(tls_info_bean);
 | 
						|
 | 
						|
        return checkCertificateResult;
 | 
						|
    }
 | 
						|
 | 
						|
    static async sendStats(io, monitorID, userID) {
 | 
						|
        const hasClients = getTotalClientInRoom(io, userID) > 0;
 | 
						|
 | 
						|
        if (hasClients) {
 | 
						|
            await Monitor.sendAvgPing(24, io, monitorID, userID);
 | 
						|
            await Monitor.sendUptime(24, io, monitorID, userID);
 | 
						|
            await Monitor.sendUptime(24 * 30, io, monitorID, userID);
 | 
						|
            await Monitor.sendCertInfo(io, monitorID, userID);
 | 
						|
        } else {
 | 
						|
            log.debug("monitor", "No clients in the room, no need to send stats");
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     *
 | 
						|
     * @param duration : int Hours
 | 
						|
     */
 | 
						|
    static async sendAvgPing(duration, io, monitorID, userID) {
 | 
						|
        const timeLogger = new TimeLogger();
 | 
						|
 | 
						|
        let avgPing = parseInt(await R.getCell(`
 | 
						|
            SELECT AVG(ping)
 | 
						|
            FROM heartbeat
 | 
						|
            WHERE time > DATETIME('now', ? || ' hours')
 | 
						|
            AND ping IS NOT NULL
 | 
						|
            AND monitor_id = ? `, [
 | 
						|
            -duration,
 | 
						|
            monitorID,
 | 
						|
        ]));
 | 
						|
 | 
						|
        timeLogger.print(`[Monitor: ${monitorID}] avgPing`);
 | 
						|
 | 
						|
        io.to(userID).emit("avgPing", monitorID, avgPing);
 | 
						|
    }
 | 
						|
 | 
						|
    static async sendCertInfo(io, monitorID, userID) {
 | 
						|
        let tls_info = await R.findOne("monitor_tls_info", "monitor_id = ?", [
 | 
						|
            monitorID,
 | 
						|
        ]);
 | 
						|
        if (tls_info != null) {
 | 
						|
            io.to(userID).emit("certInfo", monitorID, tls_info.info_json);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Uptime with calculation
 | 
						|
     * Calculation based on:
 | 
						|
     * https://www.uptrends.com/support/kb/reporting/calculation-of-uptime-and-downtime
 | 
						|
     * @param duration : int Hours
 | 
						|
     */
 | 
						|
    static async calcUptime(duration, monitorID) {
 | 
						|
        const timeLogger = new TimeLogger();
 | 
						|
 | 
						|
        const startTime = R.isoDateTime(dayjs.utc().subtract(duration, "hour"));
 | 
						|
 | 
						|
        // Handle if heartbeat duration longer than the target duration
 | 
						|
        // e.g. If the last beat's duration is bigger that the 24hrs window, it will use the duration between the (beat time - window margin) (THEN case in SQL)
 | 
						|
        let result = await R.getRow(`
 | 
						|
            SELECT
 | 
						|
               -- SUM all duration, also trim off the beat out of time window
 | 
						|
                SUM(
 | 
						|
                    CASE
 | 
						|
                        WHEN (JULIANDAY(\`time\`) - JULIANDAY(?)) * 86400 < duration
 | 
						|
                        THEN (JULIANDAY(\`time\`) - JULIANDAY(?)) * 86400
 | 
						|
                        ELSE duration
 | 
						|
                    END
 | 
						|
                ) AS total_duration,
 | 
						|
 | 
						|
               -- SUM all uptime duration, also trim off the beat out of time window
 | 
						|
                SUM(
 | 
						|
                    CASE
 | 
						|
                        WHEN (status = 1)
 | 
						|
                        THEN
 | 
						|
                            CASE
 | 
						|
                                WHEN (JULIANDAY(\`time\`) - JULIANDAY(?)) * 86400 < duration
 | 
						|
                                    THEN (JULIANDAY(\`time\`) - JULIANDAY(?)) * 86400
 | 
						|
                                ELSE duration
 | 
						|
                            END
 | 
						|
                        END
 | 
						|
                ) AS uptime_duration
 | 
						|
            FROM heartbeat
 | 
						|
            WHERE time > ?
 | 
						|
            AND monitor_id = ?
 | 
						|
        `, [
 | 
						|
            startTime, startTime, startTime, startTime, startTime,
 | 
						|
            monitorID,
 | 
						|
        ]);
 | 
						|
 | 
						|
        timeLogger.print(`[Monitor: ${monitorID}][${duration}] sendUptime`);
 | 
						|
 | 
						|
        let totalDuration = result.total_duration;
 | 
						|
        let uptimeDuration = result.uptime_duration;
 | 
						|
        let uptime = 0;
 | 
						|
 | 
						|
        if (totalDuration > 0) {
 | 
						|
            uptime = uptimeDuration / totalDuration;
 | 
						|
            if (uptime < 0) {
 | 
						|
                uptime = 0;
 | 
						|
            }
 | 
						|
 | 
						|
        } else {
 | 
						|
            // Handle new monitor with only one beat, because the beat's duration = 0
 | 
						|
            let status = parseInt(await R.getCell("SELECT `status` FROM heartbeat WHERE monitor_id = ?", [ monitorID ]));
 | 
						|
 | 
						|
            if (status === UP) {
 | 
						|
                uptime = 1;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        return uptime;
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Send Uptime
 | 
						|
     * @param duration : int Hours
 | 
						|
     */
 | 
						|
    static async sendUptime(duration, io, monitorID, userID) {
 | 
						|
        const uptime = await this.calcUptime(duration, monitorID);
 | 
						|
        io.to(userID).emit("uptime", monitorID, duration, uptime);
 | 
						|
    }
 | 
						|
 | 
						|
    static isImportantBeat(isFirstBeat, previousBeatStatus, currentBeatStatus) {
 | 
						|
        // * ? -> ANY STATUS = important [isFirstBeat]
 | 
						|
        // UP -> PENDING = not important
 | 
						|
        // * UP -> DOWN = important
 | 
						|
        // UP -> UP = not important
 | 
						|
        // PENDING -> PENDING = not important
 | 
						|
        // * PENDING -> DOWN = important
 | 
						|
        // PENDING -> UP = not important
 | 
						|
        // DOWN -> PENDING = this case not exists
 | 
						|
        // DOWN -> DOWN = not important
 | 
						|
        // * DOWN -> UP = important
 | 
						|
        let isImportant = isFirstBeat ||
 | 
						|
            (previousBeatStatus === UP && currentBeatStatus === DOWN) ||
 | 
						|
            (previousBeatStatus === DOWN && currentBeatStatus === UP) ||
 | 
						|
            (previousBeatStatus === PENDING && currentBeatStatus === DOWN);
 | 
						|
        return isImportant;
 | 
						|
    }
 | 
						|
 | 
						|
    static async sendNotification(isFirstBeat, monitor, bean) {
 | 
						|
        if (!isFirstBeat || bean.status === DOWN) {
 | 
						|
            const notificationList = await Monitor.getNotificationList(monitor);
 | 
						|
 | 
						|
            let text;
 | 
						|
            if (bean.status === UP) {
 | 
						|
                text = "✅ Up";
 | 
						|
            } else {
 | 
						|
                text = "🔴 Down";
 | 
						|
            }
 | 
						|
 | 
						|
            let msg = `[${monitor.name}] [${text}] ${bean.msg}`;
 | 
						|
 | 
						|
            for (let notification of notificationList) {
 | 
						|
                try {
 | 
						|
                    await Notification.send(JSON.parse(notification.config), msg, await monitor.toJSON(), bean.toJSON());
 | 
						|
                } catch (e) {
 | 
						|
                    log.error("monitor", "Cannot send notification to " + notification.name);
 | 
						|
                    log.error("monitor", e);
 | 
						|
                }
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    static async getNotificationList(monitor) {
 | 
						|
        let notificationList = await R.getAll("SELECT notification.* FROM notification, monitor_notification WHERE monitor_id = ? AND monitor_notification.notification_id = notification.id ", [
 | 
						|
            monitor.id,
 | 
						|
        ]);
 | 
						|
        return notificationList;
 | 
						|
    }
 | 
						|
 | 
						|
    async sendCertNotification(tlsInfoObject) {
 | 
						|
        if (tlsInfoObject && tlsInfoObject.certInfo && tlsInfoObject.certInfo.daysRemaining) {
 | 
						|
            const notificationList = await Monitor.getNotificationList(this);
 | 
						|
 | 
						|
            log.debug("monitor", "call sendCertNotificationByTargetDays");
 | 
						|
            await this.sendCertNotificationByTargetDays(tlsInfoObject.certInfo.daysRemaining, 21, notificationList);
 | 
						|
            await this.sendCertNotificationByTargetDays(tlsInfoObject.certInfo.daysRemaining, 14, notificationList);
 | 
						|
            await this.sendCertNotificationByTargetDays(tlsInfoObject.certInfo.daysRemaining, 7, notificationList);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    async sendCertNotificationByTargetDays(daysRemaining, targetDays, notificationList) {
 | 
						|
 | 
						|
        if (daysRemaining > targetDays) {
 | 
						|
            log.debug("monitor", `No need to send cert notification. ${daysRemaining} > ${targetDays}`);
 | 
						|
            return;
 | 
						|
        }
 | 
						|
 | 
						|
        if (notificationList.length > 0) {
 | 
						|
 | 
						|
            let row = await R.getRow("SELECT * FROM notification_sent_history WHERE type = ? AND monitor_id = ? AND days = ?", [
 | 
						|
                "certificate",
 | 
						|
                this.id,
 | 
						|
                targetDays,
 | 
						|
            ]);
 | 
						|
 | 
						|
            // Sent already, no need to send again
 | 
						|
            if (row) {
 | 
						|
                log.debug("monitor", "Sent already, no need to send again");
 | 
						|
                return;
 | 
						|
            }
 | 
						|
 | 
						|
            let sent = false;
 | 
						|
            log.debug("monitor", "Send certificate notification");
 | 
						|
 | 
						|
            for (let notification of notificationList) {
 | 
						|
                try {
 | 
						|
                    log.debug("monitor", "Sending to " + notification.name);
 | 
						|
                    await Notification.send(JSON.parse(notification.config), `[${this.name}][${this.url}] Certificate will be expired in ${daysRemaining} days`);
 | 
						|
                    sent = true;
 | 
						|
                } catch (e) {
 | 
						|
                    log.error("monitor", "Cannot send cert notification to " + notification.name);
 | 
						|
                    log.error("monitor", e);
 | 
						|
                }
 | 
						|
            }
 | 
						|
 | 
						|
            if (sent) {
 | 
						|
                await R.exec("INSERT INTO notification_sent_history (type, monitor_id, days) VALUES(?, ?, ?)", [
 | 
						|
                    "certificate",
 | 
						|
                    this.id,
 | 
						|
                    targetDays,
 | 
						|
                ]);
 | 
						|
            }
 | 
						|
        } else {
 | 
						|
            log.debug("monitor", "No notification, no need to send cert notification");
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    static async getPreviousHeartbeat(monitorID) {
 | 
						|
        return await R.getRow(`
 | 
						|
            SELECT status, time FROM heartbeat
 | 
						|
            WHERE id = (select MAX(id) from heartbeat where monitor_id = ?)
 | 
						|
        `, [
 | 
						|
            monitorID
 | 
						|
        ]);
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
module.exports = Monitor;
 |