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Azure Serverless Computing Cookbook
Azure Serverless Computing Cookbook

Azure Serverless Computing Cookbook: Build and monitor Azure applications hosted on serverless architecture using Azure Functions , Second Edition

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Profile Icon Praveen Kumar Sreeram Profile Icon Marston
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Paperback Nov 2018 424 pages 2nd Edition
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Arrow left icon
Profile Icon Praveen Kumar Sreeram Profile Icon Marston
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Paperback Nov 2018 424 pages 2nd Edition
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Azure Serverless Computing Cookbook

Working with Notifications Using the SendGrid and Twilio Services

In this chapter, we will look at the following:

  • Sending an email notification to the administrator of a website using the SendGrid service
  • Sending an email notification dynamically to the end user
  • Implementing email logging in Azure Blob Storage
  • Modifying the email content to include an attachment
  • Sending an SMS notification to the end user using the Twilio service

Introduction

For every business application to run its business operations smoothly, one of the key features is to have a reliable communication system between the business and its customers. The communication channel might be two-way, either by sending a message to the administrators managing the application or sending alerts to the customers via emails or SMS to their mobile phones.

Azure can integrate with two popular communication services: SendGrid for emails, and Twilio for working with SMS. In this chapter, we will be using both of these communication services to learn how to leverage their basic services to send messages between business administrators and end users.

Following is the architecture that we will be using for utilizing Send Grid and Twilio Output bindings with Http Trigger and Queue Trigger:

Sending an email notification to the administrator of a website using the SendGrid service

In this recipe, you will learn how to create a SendGrid output binding and send an email notification, containing static content, to the website administrator. Our use case only involves one administrator, so we will be hardcoding the email address of the administrator in the To address field of the SendGrid output (message) binding.

Getting ready

We will perform the following steps before moving on to the next section:

  1. Creating a SendGrid account API key from the Azure Management portal
  2. Generating an API key from the SendGrid portal
  3. Configuring the SendGrid API key with the Azure Function app
...

Sending an email notification dynamically to the end user

In the previous recipe, we hardcoded most of the attributes related to sending an email to an administrator, as there was just one administrator. In this recipe, we will modify the previous recipe to send a Thank you for registration email to the users themselves.

Getting ready

Make sure that the following are configured properly:

  • The SendGrid account has been created and an API key is generated in the SendGrid portal.
  • An App settings configuration is created in the Application settings of the function app.
  • The App settings key is configured in the SendGrid output (message) bindings.

...

Implementing email logging in Azure Blob Storage

Most of the business applications of automated emails are likely to involve sending emails containing notifications, alerts, and so on, to the end user. At times, users might complain that they haven't received any email, even though we don't see any error in the application while sending such notification alerts.

There might be multiple reasons why users might not have received the email. Each of the email service providers has different spam filters that might block the emails from the end user's inbox. But these emails might have some important information that the users might need. It makes sense to store the email content of all of the emails that are sent to the end users, so that we can retrieve the data at a later stage, for troubleshooting any unforeseen issues.

In this recipe, you will learn how to create...

Modifying the email content to include an attachment

In this recipe, you will learn how to send a file as an attachment to the registered user. In our previous recipe, we created a log file of the email content. We will send the same file as an attachment to the email. However, in real-world applications, you might not intend to send log files to the end user. For the sake of simplicity, we will send the log file as an attachment.

At the time of writing, SendGrid recommends that the size of the attachment shouldn't exceed 10 MB though, technically, your email can be as large as 20 MB.

Getting ready

This is a continuation of the previous recipe. If you are reading this first, make sure to go through the previous recipes...

Sending an SMS notification to the end user using the Twilio service

In most of the previous recipes of this chapter, we have worked with SendGrid triggers to send emails in different scenarios. In this recipe, you will learn how to send notifications via SMS using one of the leading cloud communication platforms, named Twilio.

You can also learn more about Twilio at https://www.twilio.com/.

Getting ready

In order to use the Twilio SMS output (objsmsmessage) binding, we need to do the following:

  1. Create a trial Twilio account at https://www.twilio.com/try-twilio.
  2. After successful creation of the account, grab the ACCOUNT SID and AUTH TOKEN from the Twilio Dashboard, as shown in the following screenshot. We will create two...
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Key benefits

  • Leverage practical use cases to build a robust serverless environment
  • Enhance Azure Functions with continuous deployment using Visual Studio Team Services
  • Deploy and manage cost-effective and highly available serverless applications using Azure Functions

Description

Microsoft provides a solution for easily running small segments of code in the cloud with Azure Functions. The second edition of Azure Serverless Computing Cookbook starts with intermediate-level recipes on serverless computing along with some use cases demonstrating the benefits and key features of Azure Functions. You’ll explore the core aspects of Azure Functions, such as the services it provides, how you can develop and write Azure Functions, and how to monitor and troubleshoot them. As you make your way through the chapters, you’ll get practical recipes on integrating DevOps with Azure Functions, and providing continuous integration and continuous deployment with Azure DevOps. This book also provides hands-on, step-by-step tutorials based on real-world serverless use cases to guide you through configuring and setting up your serverless environments with ease. You will also learn how to build solutions for complex, real-world, workflow-based scenarios quickly and with minimal code using Durable Functions. In the concluding chapters, you will ensure enterprise-level security within your serverless environment. The most common tips and tricks that you need to be aware of when working with Azure Functions on production environments will also be covered in this book. By the end of this book, you will have all the skills required for working with serverless code architecture, providing continuous delivery to your users.

Who is this book for?

If you are a cloud administrator, architect, or developer who wants to build scalable systems and deploy serverless applications with Azure Functions, then the Azure Serverless Computing Cookbook is for you. Hands-on experience with Microsoft Azure core services is required.

What you will learn

  • Integrate Azure Functions with other Azure services
  • Understand cloud application development using Azure Functions
  • Employ durable functions for developing reliable and durable serverless applications
  • Use SendGrid and Twilio services
  • Explore code reusability and refactoring in Azure Functions
  • Configure serverless applications in a production environment

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Nov 30, 2018
Length: 424 pages
Edition : 2nd
Language : English
ISBN-13 : 9781789615265
Vendor :
Microsoft
Concepts :
Tools :

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Product Details

Publication date : Nov 30, 2018
Length: 424 pages
Edition : 2nd
Language : English
ISBN-13 : 9781789615265
Vendor :
Microsoft
Concepts :
Tools :

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Table of Contents

12 Chapters
Developing Cloud Applications Using Function Triggers and Bindings Chevron down icon Chevron up icon
Working with Notifications Using the SendGrid and Twilio Services Chevron down icon Chevron up icon
Seamless Integration of Azure Functions with Azure Services Chevron down icon Chevron up icon
Understanding the Integrated Developer Experience of Visual Studio Tools Chevron down icon Chevron up icon
Exploring Testing Tools for the Validation of Azure Functions Chevron down icon Chevron up icon
Monitoring and Troubleshooting Azure Serverless Services Chevron down icon Chevron up icon
Developing Reliable Serverless Applications Using Durable Functions Chevron down icon Chevron up icon
Bulk Import of Data Using Azure Durable Functions and Cosmos DB Chevron down icon Chevron up icon
Implementing Best Practices for Azure Functions Chevron down icon Chevron up icon
Configuring of Serverless Applications in the Production Environment Chevron down icon Chevron up icon
Implementing and Deploying Continuous Integration Using Azure DevOps Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
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