Book Image

Azure Serverless Computing Cookbook - Third Edition

By : Praveen Kumar Sreeram
Book Image

Azure Serverless Computing Cookbook - Third Edition

By: Praveen Kumar Sreeram

Overview of this book

This third edition of Azure Serverless Computing Cookbook guides you through the development of a basic back-end web API that performs simple operations, helping you understand how to persist data in Azure Storage services. You'll cover the integration of Azure Functions with other cloud services, such as notifications (SendGrid and Twilio), Cognitive Services (computer vision), and Logic Apps, to build simple workflow-based applications. With the help of this book, you'll be able to leverage Visual Studio tools to develop, build, test, and deploy Azure functions quickly. It also covers a variety of tools and methods for testing the functionality of Azure functions locally in the developer's workstation and in the cloud environment. Once you're familiar with the core features, you'll explore advanced concepts such as durable functions, starting with a "hello world" example, and learn about the scalable bulk upload use case, which uses durable function patterns, function chaining, and fan-out/fan-in. By the end of this Azure book, you'll have gained the knowledge and practical experience needed to be able to create and deploy Azure applications on serverless architectures efficiently.
Table of Contents (14 chapters)
13
Index

Controlling access to Azure Functions using function keys

You have now learned how to enable the authorization of an individual HTTP trigger by setting the Authorization level field with the Function value in the Integrate tab of the HTTP trigger function. It works well when we use only one Azure function as a back-end web API for one of the applications and we don't want to provide access to the public.

However, in enterprise-level applications, we will end up developing multiple Azure functions across multiple function apps. In those cases, we need to have fine-grained granular access to Azure Functions for our own applications or for some other third-party applications that integrate our APIs in their applications.

This recipe will focus on understanding how to work with function keys within Azure Functions.

How to do it…

Azure supports the following keys, which can be used to control access to Azure functions:

  • Function keys: These can be used to...