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

Creating the durable orchestrator and triggering it for each CSV import

This is one of the most important and interesting recipes. We'll learn how to create the durable orchestrator responsible for managing all the activity functions that we create for the different individual tasks required to complete the CSVImport project.

How to do it...

In this section, we are going to create an orchestrator and also learn how to invoke it by performing the following steps:

  1. Create a new function by right-clicking on CSVImport.DurableFunctions, click on Add, and then choose New Azure Function, as shown in Figure 8.14:
    Visual Studio – adding a new function
    Figure 8.14: Visual Studio—adding a new function
  2. In the Add New Item popup, choose Azure Function, provide the name CSVImport_Orchestrator, and click on Add, as shown in Figure 8.15:

    Visual Studio – adding a new function
    Figure 8.15: Visual Studio—adding a new function
  3. In the New Azure Function popup, select the Durable Functions Orchestration template and click on the OK button...