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 a blob trigger

In this recipe, we'll create a function app with the Azure Functions V3 runtime and learn how to create a blob trigger using Visual Studio, and we'll also see how the blob trigger gets triggered when the CSV file is uploaded successfully to the blob container.

How to do it…

Perform the following steps:

  1. Add a new project named CSVImport.DurableFunctions to the existing solution by choosing the Azure Functions template, as shown in Figure 8.8:
    Creating a new Azure Functions project
    Figure 8.8: Visual Studio—creating a new Azure Functions project
  2. The next step is to choose the Azure Functions runtime as well as the trigger. Choose Azure Functions v3 (.NET Core), choose Blob trigger, and provide the following:

    Storage Account (AzureWebJobsStorage): This is the name of the storage account in which our blob container resides.

    Connection string setting: This is the connection string key name that refers to the storage account.

    Path: This is the name of the blob container...