January 2019
Intermediate to advanced
490 pages
15h 37m
English
Content preview from Serverless Programming Cookbook
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Mapping requests and responses with mapping templates
Amazon API Gateway allows us to map our incoming requests to a format that's required by our Lambda, and map the response from the Lambda into a format that's required by the client, all by using the mapping templates. The API Gateway body mapping templates are based on the Apache Velocity Template Language (VTL) and JSONPath expressions.
In this recipe, we will see how to map a JSON body coming from a request into another JSON structure, as required by the backend (Lambda). We will also map the JSON response from the backend (Lambda) into a different JSON response structure which is sent back as the response. We will use the same Lambda from the recipe Building your first API with Lambda ...
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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.