Real browser monitor type (#3308)
Louis Lam
2 years ago
committed by
GitHub
parent
dd77baabe1
commit
4f6035899d
@ -0,0 +1,164 @@
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const { MonitorType } = require("./monitor-type");
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const { chromium, Browser } = require("playwright-core");
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const { UP, log } = require("../../src/util");
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const { Settings } = require("../settings");
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const commandExistsSync = require("command-exists").sync;
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const childProcess = require("child_process");
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const path = require("path");
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const Database = require("../database");
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const jwt = require("jsonwebtoken");
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/**
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*
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* @type {Browser}
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*/
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let browser = null;
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async function getBrowser() {
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if (!browser) {
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let executablePath = await Settings.get("chromeExecutable");
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executablePath = await prepareChromeExecutable(executablePath);
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browser = await chromium.launch({
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//headless: false,
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executablePath,
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});
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}
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return browser;
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}
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async function prepareChromeExecutable(executablePath) {
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// Special code for using the playwright_chromium
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if (typeof executablePath === "string" && executablePath.toLocaleLowerCase() === "#playwright_chromium") {
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executablePath = undefined;
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} else if (!executablePath) {
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if (process.env.UPTIME_KUMA_IS_CONTAINER) {
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executablePath = "/usr/bin/chromium";
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// Install chromium in container via apt install
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if ( !commandExistsSync(executablePath)) {
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await new Promise((resolve, reject) => {
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log.info("Chromium", "Installing Chromium...");
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let child = childProcess.exec("apt update && apt --yes --no-install-recommends install chromium fonts-indic fonts-noto fonts-noto-cjk");
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// On exit
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child.on("exit", (code) => {
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log.info("Chromium", "apt install chromium exited with code " + code);
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if (code === 0) {
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log.info("Chromium", "Installed Chromium");
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let version = childProcess.execSync(executablePath + " --version").toString("utf8");
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log.info("Chromium", "Chromium version: " + version);
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resolve();
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} else if (code === 100) {
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reject(new Error("Installing Chromium, please wait..."));
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} else {
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reject(new Error("apt install chromium failed with code " + code));
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}
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});
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});
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}
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} else if (process.platform === "win32") {
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executablePath = findChrome([
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"C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe",
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"C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe",
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"D:\\Program Files\\Google\\Chrome\\Application\\chrome.exe",
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"D:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe",
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"E:\\Program Files\\Google\\Chrome\\Application\\chrome.exe",
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"E:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe",
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]);
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} else if (process.platform === "linux") {
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executablePath = findChrome([
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"chromium-browser",
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"chromium",
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"google-chrome",
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]);
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}
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// TODO: Mac??
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}
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return executablePath;
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}
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function findChrome(executables) {
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for (let executable of executables) {
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if (commandExistsSync(executable)) {
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return executable;
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}
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}
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throw new Error("Chromium not found, please specify Chromium executable path in the settings page.");
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}
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async function resetChrome() {
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if (browser) {
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await browser.close();
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browser = null;
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}
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}
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/**
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* Test if the chrome executable is valid and return the version
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* @param executablePath
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* @returns {Promise<string>}
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*/
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async function testChrome(executablePath) {
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try {
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executablePath = await prepareChromeExecutable(executablePath);
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log.info("Chromium", "Testing Chromium executable: " + executablePath);
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const browser = await chromium.launch({
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executablePath,
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});
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const version = browser.version();
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await browser.close();
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return version;
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} catch (e) {
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throw new Error(e.message);
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}
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}
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/**
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* TODO: connect remote browser? https://playwright.dev/docs/api/class-browsertype#browser-type-connect
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*
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*/
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class RealBrowserMonitorType extends MonitorType {
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name = "real-browser";
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async check(monitor, heartbeat, server) {
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const browser = await getBrowser();
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const context = await browser.newContext();
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const page = await context.newPage();
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const res = await page.goto(monitor.url, {
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waitUntil: "networkidle",
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timeout: monitor.interval * 1000 * 0.8,
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});
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let filename = jwt.sign(monitor.id, server.jwtSecret) + ".png";
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await page.screenshot({
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path: path.join(Database.screenshotDir, filename),
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});
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await context.close();
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if (res.status() >= 200 && res.status() < 400) {
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heartbeat.status = UP;
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heartbeat.msg = res.status();
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const timing = res.request().timing();
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heartbeat.ping = timing.responseEnd;
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} else {
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throw new Error(res.status() + "");
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}
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}
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}
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module.exports = {
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RealBrowserMonitorType,
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testChrome,
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resetChrome,
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};
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