Beginning Serverless Computing Maddie Stigler

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Maddie Stigler

Beginning Serverless ComputingDeveloping with Amazon Web Services, Microsoft Azure, and Google Cloud

Maddie Stigler

Richmond, Virginia, USA

Any source code or other supplementary material referenced by the author in this book is available to readers on GitHub via the book’s product page, located at www.apress.com/9781484230831 . For more detailed information, please visit http://www.apress.com/source-code .

ISBN 978-1-4842-3083-1e-ISBN 978-1-4842-3084-8

https://doi.org/10.1007/978-1-4842-3084-8

Library of Congress Control Number: 2017961537

This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed.

Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.

While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

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This is dedicated to my supportive friends and family.

Contents

Chapter 3: Amazon Web Services 41

Explore the UI 41

Navigation 42

Pricing 44

Lambda 45

Security IAM 47

IAM Console 47

Roles, Policies, and Users 48

Roles for Lambda 49

Your First Code 50

Hello World 50

Testing 52

CloudWatch 55

Environment Variables 57

What Are Environment Variables 57

Using Environment Variables in Hello World 58

HTTP Event 59

Exploring API Gateway 60

Using API Gateway as a Trigger 65

Response to Trigger 68

Storage Event 74

Amazon S3 74

Using S3 as a Trigger 75

Response to Trigger 77

Conclusion 81

Chapter 4: Azure 83

Explore the UI 83

Navigation 84

Pricing 88

Azure Functions 89

Azure Security 91

Implement Recommendations 93

Set Security Policies 94

Your First Code 95

Hello World 96

Testing 101

Application Insights 103

HTTP Events 107

Create a GitHub WebHook Trigger 107

Build Upon Our Hello World API Trigger 111

The Storage Event 117

Azure Queue Storage 117

Create the Function 118

Microsoft Azure Storage Explorer 120

Finish Our Function 123

Conclusion 128

Chapter 5: Google Cloud 129

Explore the UI 129

Navigation 131

Pricing 132

Cloud Functions 134

Security IAM 135

IAM Console 135

Roles 136

Policies 137

Your First Code 138

Hello World 139

Stackdriver Logging 141

Stage Bucket 145

HTTP Event 149

Firebase Realtime Database 151

Storage Event 160

Create our Storage Triggered Function 160

Reacting to the Triggered Event 163

Pub/Sub Event 168

What Is Google Cloud Pub/Sub? 168

Creating Our Pub/Sub Function 170

Conclusion 173

Chapter 6: An Agnostic Approach 175

Need for Agnostic Solutions 175

The Current State 175

Business Problems 179

Recommended Solution 180

Define the Approach 181

Explore the Code 186

Code and Example Using the Database 190

Conclusion 195

Index197

About the Author and About the Technical Reviewer

About the Author

Maddie Stigler

is a professional developer for a consulting firm based in Richmond, Virginia. She is a part of the core team for Women Who Code in Richmond and is involved in many local Microsoft and Amazon meetups. Her interest in cloud computing began while studying computer science at the University of Virginia and has only grown since then. Maddie has maintained a fascination with serverless technology from the start and has applied principles of serverless design and architecture both in her professional and personal work, including developing a flight status service for travel insurance customers using AWS Lambda and Node.js. Her favorite application to date has been creating Amazon Alexa skills by utilizing Lambda functions written in Node.js and triggering them with the Alexa Skills Kit. Maddie plans to continue pursuing her interest in growing cloud technologies and serverless architecture and share her knowledge so that others can do the same.

About the Technical Reviewer

Brandon Atkinson

is an accomplished technology leader with over 14 years of industry experience encompassing analysis, design, development, and implementation of enterprise-level solutions. His passion is building scalable teams and enterprise architecture that can transform businesses and alleviate pain points. Brandon leads technology projects, helping to shape the vision, providing technical thought leadership, and implementation skills to see any project through. He has extensive experience in various technologies/methodologies including: Azure, AWS, .NET, DevOps, Cloud, JavaScript, Angular, Node.js, and more.

When not building software, Brandon enjoys time with his wife and two girls in Richmond, VA.

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