In this blog post, I show how you can deploy a browser automation task to Lambda. You can also configure Lambda to scale up for load testing operations, making it a cost effective alternative to managing a fleet of instances. You can configure a Lambda function to start on a schedule, or in response to an event. However, many typical browser automation tasks are a good fit for AWS Lambda. You can run a headless browser on your local development machine or a remote server. Whether you are load testing a website or periodically fetching content, this can be configured with minimal code. Headless Chromium is a popular package for operating a browser programmatically. It can also enable you to automate form submissions, build UI tests, or diagnose performance issues. It allows you to generate PDF files, screenshot webpages, or run health checks on a website, all from code. If (atag & atag.textContent = '在文件夹中显示'), // polling? yes.Manipulating a web browser environment with an API provides a wide range of automation capabilities for developers. if finish than return true if fail clickĬonst dm = document.querySelector('downloads-manager').shadowRootĬonst firstItem = dm.querySelector('#frb0')Ĭonst thatArea = ('.controls') monitoring the state of the first download item

But you can easily adapt it to 'infinite threads' by iterating through all download items ( #frb0~ #frbn) in that page, well, take care of your network:) dmPage = await browser.newPage()Īwait your_download_button.click() // start downloadĪwait dmPage.bringToFront() // this is necessary This example is 'single thread' currently, because it's only monitoring the first item appear in the download manager page. This solution can be very easily to auto restart a failed download using chrome's own feature My solution is to use chrome's own chrome://downloads/ page to managing download files. It also has 'smarter' locator, which examine selectors every time before click() Use Playwright to get away from this mass.

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