Dockerfile
FROM public.ecr.aws/lambda/nodejs:12
COPY index.js package.json /var/task/
RUN npm install --save-prod
CMD [ "index.handler" ]
package.json
{
"name": "lighthouse2",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"dependencies": {
"chrome-aws-lambda": "^7.0.0",
"puppeteer-core": "^7.0.4",
"lighthouse": "^7.1.0"
}
}
index.js
const chromium = require('chrome-aws-lambda');
const lighthouse = require('lighthouse');
exports.handler = async(event, context, callback) => {
let result = null;
let chrome = null;
try {
console.log('Launching puppeteer chromium');
let chromiumOptions = {
args: chromium.args,
defaultViewport: chromium.defaultViewport,
executablePath: await chromium.executablePath,
headless: chromium.headless,
ignoreHTTPSErrors: true
};
const command = await chromium.puppeteer.launch(chromiumOptions)
.then((chrome) => {
console.log('launch.then called');
return {
chrome,
async start() {
console.log('function start called');
const options = {logLevel: 'info', onlyCategories: ['performance']};
const runnerResult = await lighthouse('https://www.example.com', options)
console.log('Report is done for', runnerResult.lhr.finalUrl);
console.log('Performance score was', runnerResult.lhr.categories.performance.score * 100);
await chrome.kill();
}
}
})
.catch(err => console.error(err));
console.log('Launched.');
return await command.start();
} catch (error) {
console.log(error);
return callback(error);
} finally {
if (chrome !== null) {
await chrome.close();
}
}
return callback(null, result);
};
Создайте тестовый образ Docker:
docker build -t lighthouse2 .; docker run --rm -p 9000:8080 lighthouse2
Протестируйте обработчик (в другом терминале)
curl -XPOST "http://localhost:9000/2015-03-31/functions/function/invocations" -d '{"payload":"hello world!"}'
Ожидаемый результат:
Lighthouse работает, и я могу прочитать свойства отчета.
Фактический результат:
Когда Lighthouse действительно работает, я получаю следующее, какие бы настройки я ни пробовал:
Wed, 17 Feb 2021 23:24:18 GMT status Connecting to browser
Wed, 17 Feb 2021 23:24:18 GMT CriConnection:warn Cannot create new tab; reusing open tab.
Wed, 17 Feb 2021 23:24:18 GMT status Disconnecting from browser...
Wed, 17 Feb 2021 23:24:18 GMT CriConnection:error sendRawMessage() was called without an established connection.
Wed, 17 Feb 2021 23:24:18 GMT GatherRunner disconnect:error sendRawMessage() was called without an established connection.
} port: 9222127.0.0.1',,terConnect [as oncomplete] (net.js:1144:16) { INFO Error: connect ECONNREFUSED 127.0.0.1:9222
2021-02-17T23:24:18.145Z 8cd07390-6550-40b7-87a5-c162fc55eedf ERROR Invoke Error {"errorType":"Error","errorMessage":"connect ECONNREFUSED 127.0.0.1:9222","code":"ECONNREFUSED","errno":"ECONNREFUSED","syscall":"connect","address":"127.0.0.1","port":9
222,"stack":["Error: connect ECONNREFUSED 127.0.0.1:9222"," at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1144:16)"]