April 2018
Intermediate to advanced
250 pages
5h 42m
English
Content preview from Docker for Serverless Applications
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Wrapping a legacy with a function
In this section, we will demonstrate how to write a wrapper function for a legacy web-based system. To achieve this, we use the chromeless library (https://github.com/graphcool/chromeless) to connect to a headless Chrome instance. Then the chromeless script drives the Chrome browser to do the rest for us.
The following diagram shows the working mechanism of this part of the system:
Figure 8.11: Diagram of implementing an OpenFaaS function to wrap around a UI-based ERP
What does chromeless do? chromeless is a Node.js library that can be used to perform browser automation, similar to PhantomJS or Selenium. But ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.