Expert AWS Development E-Book

Atul V. Mistry

• Herausgeber: Packt Publishing
• Kategorie: Fachliteratur
• Sprache: Englisch

Seitenzahl: 376

Veröffentlichungsjahr: 2018

Beschreibung

Expert AWS Development begins with the
installation of the AWS SDK and you will go
on to get hands-on experience of creating
an application using the AWS Management
Console and the AWS Command Line
Interface (CLI). Then, you will integrate
applications with AWS services such as
DynamoDB, Amazon Kinesis, AWS Lambda,
Amazon SQS, and Amazon SWF.
Following this, you will get well versed with
CI/CD workflow and work with four major
phases in the release process – Source,
Build, Test, and Production. Then, you will
learn to apply AWS Developer tools to your
Continuous Integration (CI) and Continuous
Deployment (CD) workflow. Later, you
will learn about user authentication using
Amazon Cognito, and also how you can
evaluate the best architecture as per your
infrastructure costs. You will learn about
Amazon EC2 service and will deploy an
app using it. You will also deploy a practical
real-world example of a CI/CD application
with the Serverless Application Framework,
which is known as AWS Lambda.
Finally, you will learn how to build, develop,
and deploy the Application using AWS
Developer tools such as AWS CodeCommit,
AWS CodeBuild, AWS CodeDeploy, and
AWS CodePipeline, as per your project
requirements.

Leseprobe

Expert AWS Development

Efficiently develop, deploy, and manage your enterprise apps on the Amazon Web Services platform

Atul V. Mistry

BIRMINGHAM - MUMBAI

Expert AWS Development

Copyright © 2018 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing or its dealers and distributors, will be held liable for any damages caused or alleged to have been caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

Commissioning Editor: Vijin BorichaAcquisition Editor: Meeta RajaniContent Development Editor: Devika BattikeTechnical Editor:Prachi SawantCopy Editor:Safis EditingProject Coordinator: Judie JoseProofreader: Safis EditingIndexer: Pratik ShirodkarGraphics: Tom ScariaProduction Coordinator: Arvindkumar Gupta

First published: March 2018

Production reference: 1280318

Published by Packt Publishing Ltd. Livery Place 35 Livery Street Birmingham B3 2PB, UK.

ISBN 978-1-78847-758-1

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Contributors

About the author

Atul V. Mistry holds all three AWS Associate certifications and has been a winner at AWS IoT HackDay, 2017 event in Singapore. He has worked consistently with AWS and on software design and development with JEE technology. He has diverse work experience, having worked around the globe, and participated extensively in cross-functional project delivery in the finance industry.

Writing this book would have been very difficult without the support of my parents, C.V. Mistry and V. L. Mistry, family, and friends. Above all I am very thankful to the entire Packt team as they supported me as per their progressive symbol. Finally, I would like to thank Rashmi, my wife, and two kids (Mahi and Shivansh) for their cooperation.

About the reviewer

Miguel Angel Sanchez Marti has 4 years' experience of architecting solutions in AWS, having worked for many clients. Currently, he's a business consultant at Datadec, which has migrated most of its clients from on-premise to cloud solutions. They're involved in delivering the latest technology and he is in charge of developing AI and machine learning solutions for their clients.

He has been an AWS Certified Solutions Architect since June 2016. He was involved in many software projects working for Binn.es as a software project manager.

Thanks to my family for being patient with me right from the time I took up this book, as it decreased the amount of time I could spend with them—especially my wife, Julie, and my 6-year-old son, Alexander.

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Table of Contents

Title Page

Copyright and Credits

Expert AWS Development

Packt Upsell

Why subscribe?

PacktPub.com

Contributors

About the author

About the reviewer

Packt is searching for authors like you

Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Download the color images

Conventions used

Get in touch

Reviews

AWS Tools and SDKs

Brief introduction to AWS tools and SDKs

AWS SDK for Java

AWS SDK for Java using Apache Maven

Configuring an SDK as a Maven dependency

AWS SDK for Java using Gradle

AWS SDK for Java using Eclipse IDE

AWS SDK for Node.js

AWS SDKs for IoT devices

AWS SDKs for mobile devices

AWS Mobile SDK for Android

AWS Mobile SDK setup for Android

Configuring AWS Mobile SDK for Android

Using Amazon Cognito to set AWS credentials

Summary

Integrating Applications with AWS Services

Amazon DynamoDB

Integrating DynamoDB into an application

Low-level interface

Document interface

Object persistence (high-level) interface

DynamoDB low-level API

Troubleshooting in Amazon DynamoDB

Amazon Kinesis

Amazon Kinesis streams

Troubleshooting tips for Kinesis streams

Amazon Kinesis Firehose

Troubleshooting tips for Kinesis Firehose

Amazon SQS

Benefits and features of Amazon SQS

Troubleshooting in Amazon SQS

Amazon SWF

AWS SWF components

Amazon SWF examples

AWS SDK for Java using Apache Maven

Workflow implementations

Building and running a project

Troubleshooting Amazon SWF

Unknown resource fault

Non-deterministic workflows

Versioning problems

Troubleshooting and debugging a workflow execution

Lost tasks

Summary

Continuous Integration and Continuous Deployment Workflow

An overview of DevOps

The goal of DevOps

Reasons for integrating DevOps in your process  

The benefits of DevOps

Continuous Integration – maintaining code repository

Continuous Integration best practices

Continuous Delivery – automating build and self-testing

Continuous Delivery benefits

Continuous Deployment – automating production deployment

How they work together

The benefits of Continuous Deployment

Tools used for DevOps processes

Source Code Management

GIT

Bitbucket

Subversion (SVN)

Build Automation tool

Maven

Ant

Gradle

Test automation

Selenium

JUnit

Cucumber

Continuous Integration

Jenkins

Bamboo

Hudson

Configuration Management

Puppet

Chef

Ansible

Continuous Monitoring

Nagios

Ganglia

Sensu

Virtual Infrastructure

CI/CD on AWS

Summary

CI/CD in AWS Part 1 – CodeCommit, CodeBuild, and Testing

A brief overview of AWS for DevOps

AWS CodeCommit – maintaining code repository

Prerequisites of AWS CodeCommit

AWS CodeCommit setup using Git credentials

AWS CodeCommit setup using other methods

Getting started with AWS CodeCommit

AWS CodeBuild – automating the build

AWS CodeBuild benefits

AWS CodeBuild features

Creating AWS CodeBuild project using AWS Management Console

List of build project names

Viewing the build project's details

Updating the build project's details

Deleting the build project

Summary

CI/CD in AWS Part 2 – CodeDeploy, CodePipeline, and CodeStar

AWS CodeDeploy

AWS CodeDeploy benefits

Compute platforms and deployment options for AWS CodeDeploy

Compute platforms

Deployment options

AWS CodeDeploy – sample application deployment on a Windows Server

Step 1 – prerequisite configurations for AWS CodeDeploy

Step 2 – launch a Windows Server Amazon EC2 instance

Step 3 – configure source content to deploy to the EC2 instance

Step 4 – upload application to Amazon S3

Provision of S3 bucket with IAM user permission

Preparation and bundling of the application's file and pushing to the S3 bucket

Step 5 – deploy application

To deploy and monitor the application from AWS CLI

To deploy and monitor the application from AWS Management Console

Step 6 – update and redeploy application

Step 7 – clean up the application and related resources

AWS CodePipeline

AWS CodePipeline benefits

AWS CodePipeline features

Creating an AWS CodePipeline from the console

Creating an AWS CodePipeline from AWS CLI

JSON file creation

Execution of the create-pipeline command

AWS CodeStar

Creating a project in AWS CodeStar

AWS X-Ray

AWS X-Ray benefits

Key features of AWS X-Ray

Creating an AWS X-Ray example from the console

Summary

User Authentication with AWS Cognito

Amazon Cognito benefits

Amazon Cognito features

Amazon Cognito User Pools

Getting started with Amazon Cognito User Pools

Amazon Cognito User Pool creation from the console

Amazon Cognito example for Android with mobile SDK

Amazon Cognito Federated Identities

Creating a new Identity Pool from the console

Amazon Cognito Sync

Summary

Evaluating the Best Architecture

The comparison of traditional web hosting versus web hosting on the cloud using AWS

Traditional web hosting

Challenges with traditional hosting

Cloud hosting

The AWS solution for common web hosting

AWS Well-Architected framework

Amazon EC2 instance and Elastic Load Balancer

Benefits and drawbacks of Amazon EC2

Elastic Load Balancing

Docker with the Amazon EC2 Container Service (Amazon ECS)

Use case of Docker

Containers

Amazon ECS

Serverless architecture with Lambda

Use cases for different architectures

Controlling and optimizing costs

Summary

Traditional Web Hosting – Amazon EC2 and Elastic Load Balancing

Amazon EC2 best practices

Troubleshooting instances

Instance terminates immediately

Errors when connected to an instance

Troubleshooting stopping your instance

Troubleshooting terminating (shutting down) your instance

Troubleshooting instance recovery failures

Troubleshooting instances with failed status checks

Troubleshooting instance capacity

Getting console output and rebooting instances

My instance is booting from the wrong volume

Troubleshooting Windows instances

Elastic Load Balancing, auto scaling, and fault tolerant

Features of ELB

Benefits of Application Load Balancer 

Benefits of Network Load Balancer 

Benefits of Classic Load Balancer 

Auto scaling and fault tolerance

Fault tolerance in AWS for Amazon EC2

Monitoring and optimizing the cost of the EC2 infrastructure

Cost efficient resources

Supply-demand matching

Know your expenses

Optimization over time

Continuous Integration and Continuous Deployment workflow

Summary

Amazon EC2 Container Service

Docker

Container instances

Basic concepts of a container instance

Life cycle of a container instance

Checking the instance role for the account

AMIs for a container instance

Update notification subscribing to Amazon ECS–optimized AMI

Launching an Amazon ECS container instance

Bootstrapping container instances with Amazon EC2 user data

Connecting your container instance

Container instances with CloudWatch Logs

Container instance draining

Remotely managing your container instance

Deregistering your container instance

Amazon ECS clusters

Cluster concepts

Creating a cluster

Scaling a cluster

Deleting a cluster

Scheduling tasks

Service scheduler

Manually running tasks

Running tasks on a cron-like schedule

Custom schedulers

Task life cycle

Task retirement

Windows containers (beta)

Windows container concepts

A web application with Windows containers

Create a Windows cluster

Launch a Windows container instance into the cluster

Register a task definition for Windows

Create a service with the task definition

View the service

Monitoring and optimizing the cost of the infrastructure

Continuous Integration (CI) and Continuous Deployment (CD) Workflow

Step 1 – addding required files source repository

Step 2 – creating a Continuous Deployment pipeline

Step 3 – adding Amazon ECR permissions to the AWS CodeBuild role

Step 4 – testing your pipeline

Summary

Amazon Lambda – AWS Serverless Architecture

Microservices architecture

Microservice characteristics

Lambda and Lambda@Edge advanced topics and best practices

Environment variables

Setting up

Naming convention rules for environment variables

Environment variables and function versioning

Environment variable encryption

Error scenarios

Dead letter queues (DLQ)

Best practices for working with AWS Lambda functions

Function code

Function configuration

Alarming and metrics

Stream event invokes

Async invokes

Lambda VPC

Lambda@Edge

Lambda@Edge benefits

AWS Serverless Application Model (SAM)

Deploying with AWS SAM and AWS CloudFormation

Packaging and deployment

Packaging

Deployment

Introducing the Serverless Application Framework

What makes an application serverless?

Serverless applications benefits

The Serverless Framework

Serverless Framework benefits

Monitoring and optimizing the cost of the infrastructure

How does Lambda pricing work?

How do you keep AWS Lambda costs down?

CI and CD workflow

Step 1 – setting up the repository

Step 2 – creating the pipeline

Step 3 – modifying the generated policy

Step 4 – completing your deployment stage

Summary

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Preface

Continuous Integration/Continuous Deployment and the Agile methodology have enabled huge advances in modern applications. This book will enable the reader to make use of these rapidly evolving technologies to build highly scalable applications within AWS using different architectures.

You will begin by installing the AWS SDK and will then get hands-on experience of creating an application using the AWS Management Console and the AWS Command Line Interface (CLI). Next, you will be integrating Applications with AWS services such as DynamoDB, Amazon Kinesis, AWS Lambda, Amazon SQS, and Amazon SWF.

Following this, you will get well versed with CI/CD workflow and work with four major phases in the release processes—Source, Build, Test, and Production. Next, you will learn to apply AWS Developer tools in your Continuous Integration (CI) and Continuous Deployment (CD) workflow. Later, you will learn about user authentication using Amazon Cognito and also how you can evaluate the best architecture as per your infrastructure costs. You will learn about Amazon EC2 and deploy an app using it. You will also get well versed with container service, which is Amazon EC2 Container Service (Amazon ECS), and you will learn how to deploy an app using it. Along with EC2 and ECS, you will also deploy a practical real-world example of a CI/CD application with the Serverless Application Framework, which is known as AWS Lambda. Finally, you will learn how to build, develop, and deploy an application using AWS Developer tools such as AWS CodeCommit, AWS CodeBuild, AWS CodeDeploy, and AWS CodePipeline as per your project needs. You will also be able to develop and deploy applications within minutes using AWS CodeStar from the wizard.

By the end of this book, you will be able to effectively build, deploy, and manage applications on AWS along with scaling and securing applications with best practices and troubleshooting tips.

Who this book is for

This book targets developers who would like to build and manage web and mobile applications and services on the AWS platform. If you are an architect, you will be able to deep dive and use examples that can be readily applied to real-world scenarios. Some prior programming experience is assumed, along with familiarity with cloud computing.

What this book covers

Chapter 1, AWS Tools and SDKs, introduces the AWS SDK and covers installation and the programming languages that are supported. The reader will get hands-on experience of creating an application. This chapter also covers SDKs for IoT devices and mobiles.

Chapter 2, Integrating Applications with AWS Services, covers how to integrate applications with AWS services such as DynamoDB, Amazon Kinesis, AWS Lambda, Amazon SQS, and Amazon SWF.

Chapter 3, Continuous Integration and Continuous Deployment Workflow, introduces the four major phases in the release processes—Source, Build, Test, and Production.

Chapter 4, CI/CD in AWS Part 1 – CodeCommit, CodeBuild, and Testing, explains how to apply AWS developer tools in your Continuous Integration (CI) and Continous Deployment (CD) workflow.

Chapter 5, CI/CD in AWS Part 2 – CodeDeploy, CodePipeline, and CodeStar, discusses other AWS Code family tools such as AWS CodeDeploy, AWS CodePipeline, AWS CodeStar, and AWS X-Ray. 

Chapter 6, User Authentication with AWS Cognito, explains how to manage user authentication with AWS Cognito and also covers AWS Cognito service, which is a simple and secure user authentication for mobile and web applications. 

Chapter 7, Evaluating the Best Architecture, covers traditional web hosting and web hosting on the cloud using AWS discussing, the best architecture for applications. 

Chapter 8, Traditional Web Hosting – Amazon EC2 and Elastic Load Balancing, discusses Amazon EC2 best practices and troubleshooting. The chapter also covers about Elastic Load Balancing, auto-scaling, and fault-tolerant advanced topics. Finally, we will deploy an example of a CI/CD application using Amazon EC2 instances.

Chapter 9, Amazon EC2 Container Service, covers Docker, container instances, clusters, scheduling Ttsks, and Windows containers. Then, we will deploy an example of a CI/CD application with Amazon EC2 container services.

Chapter 10, Amazon Lambda – AWS Serverless Architecture, goes into more detail more about Microservices, Serverless Framework, how you can achieve serverless on the AWS platform using AWS Lambda, and you will learn how to deploy applications with the AWS Serverless Application Model (SAM).

To get the most out of this book

This book assumes that readers are already familiar with the basics of Amazon Web Services (AWS) and have some development background. It explains readers about Continuous Integration (CI) and Continuous Deployment (CD) and how they are achieved on AWS using Developer tools. Readers will also learn about different architectures and implement CI/CD on these architectures. Some of the troubleshooting and cost optimization tips are really helpful to the users while using different AWS services. Users can use free-tier cloud providers wherever possible; certain services might cost a small amount of money.

From a hardware point of view, you can work on any modern computer running for any operating system supported by AWS.

Download the example code files

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

Log in or register at

www.packtpub.com

.

Select the

SUPPORT

tab.

Click on

Code Downloads & Errata

.

Enter the name of the book in the

Search

box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

WinRAR/7-Zip for Windows

Zipeg/iZip/UnRarX for Mac

7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Expert-AWS-Development. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Download the color images

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/ExpertAWSDevelopment_ColorImages.pdf.

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "You will see pom.xml file will be generated under ..\AWS SDK Example\javamaven-demo folder."

A block of code is set as follows:

<dependency> <groupId>com.amazonaws</groupId> <artifactId>aws-java-sdk</artifactId> <version>1.11.106</version></dependency>

Any command-line input or output is written as follows:

mvn clean compile exec:java

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Once you click on Install New Software it will open Available Software dialog box."

Warnings or important notes appear like this.

Tips and tricks appear like this.

Get in touch

Feedback from our readers is always welcome.

General feedback: Email [email protected] and mention the book title in the subject of your message. If you have questions about any aspect of this book, please email us at [email protected].

Errata: Although we have taken every care to ensure the accuracy of our content, mistakes do happen. If you have found a mistake in this book, we would be grateful if you would report this to us. Please visit www.packtpub.com/submit-errata, selecting your book, clicking on the Errata Submission Form link, and entering the details.

Piracy: If you come across any illegal copies of our works in any form on the Internet, we would be grateful if you would provide us with the location address or website name. Please contact us at [email protected] with a link to the material.

If you are interested in becoming an author: If there is a topic that you have expertise in and you are interested in either writing or contributing to a book, please visit authors.packtpub.com.

Reviews

Please leave a review. Once you have read and used this book, why not leave a review on the site that you purchased it from? Potential readers can then see and use your unbiased opinion to make purchase decisions, we at Packt can understand what you think about our products, and our authors can see your feedback on their book. Thank you!

For more information about Packt, please visit packtpub.com.

AWS Tools and SDKs

Most probably, if you are reading this book, you are a code-drink lover who is trying to explore or probably using Amazon Web Services (AWS). AWS contains around 20 different kinds of category/product, which have 110+ services. In this chapter, we will explore AWS tools and SDKs, which are under the Developer tools category of AWS products.   

In the software world, a software development kit is known asSDK. It includes software development tools that allow you to create applications, software packages, frameworks, computer systems, gaming consoles, hardware platforms, operating systems, or similar kinds of software/hardware development platforms. Some SDKs are useful for developing platform-specific applications; for example, for Android applications on Java, you need the Java Development Kit(JDK) and for iOS applications, you need the iOS SDK. This is the basic idea of SDKs.

AWS also provides primary developer tools, command-line tools, toolkits, and SDKs to develop and manage AWS applications. It provides a variety of tools and SDKs as per the programming knowledge and project needs. With the help of these tools and SDKs, you can quickly and easily build and manage great applications on the AWS Cloud. This chapter will show you how to install and use these SDKs for different programming languages.

By the end of this chapter, you will understand how to install AWS SDKs and use them for development in different programming languages.  

This chapter will cover the following topics: 

Brief introduction to AWS tools and SDKs

AWS SDK for Java

AWS SDK for Java using Apache Maven

Configuring an SDK as a Maven dependency

AWS SDK for Java using Gradle

AWS SDK for Java using Eclipse IDE

AWS SDK for Node.js

Brief introduction to AWS tools and SDKs

As we discussed in the introduction, AWS provides developer and command-line tools, toolkits, and SDKs to develop and manage AWS applications. Currently, AWS provides nine SDKs for different programming languages, six SDKs for IoT devices, and five SDKs for mobile devices. Let's take a brief look at this:

Developer tools

: Developer tools are used to store source code securely and version-control it. They also help with build automation and testing and deploying applications to AWS or on-premise. They include the AWS CodeCommit, AWS CodePipeline, AWS CodeBuild, and AWS CodeDeploy services. We will cover these in

Chapter 4

,

CI/CD in AWS Part 1 – CodeCommit, CodeBuild, and Testing 

and

Chapter 5

,

CI/CD in AWS Part 2 – CodeDeploy

,

CodePipeline

, and 

CodeStar

.

SDKs

: They provide APIs for programming languages, IoT, and mobile devices.

IDE toolkits

: Cloud tools which can integrate to your integrated development environment to speed up your AWS development.

Command line

: This is used to control AWS services from the command line and create scripts for automated service management.

Serverless development

: Serverless applications built on AWS Lambda can test and deploy using AWS

Serverless Application Model

(

SAM

) and SAM Local. We will cover Amazon Lambda in

Chapter 10

, 

Amazon Lambda – AWS Serverless Architecture

.

AWS provides SDKs for the different languages and hardware devices to connect AWS IoT and mobile devices.

The following are the different kinds of SDK. In this chapter, we will cover two programming language SDKs, Java and Node.js:

AWS SDK for Java using Apache Maven

Please perform the following steps to include AWS SDK for Java using Apache Maven.

Assuming that you have already installed Maven in your machine, create a new folder called

AWS SDK Example

 or any name. Go to this folder and execute the following command to set up the environment:

mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart

After it has successfully executed, you will see the following folder structure under the 

AWS SDK Example

folder:

    

You will see the pom.xml file generated under the ..\AWS SDK Example\java-maven-demo folder.

AWS SDK for Java using Eclipse IDE

I am assuming that you have already installed Eclipse 4.4 (Luna) or a higher version on your machine as the AWS toolkit supports that.

There are two ways to install an AWS toolkit in your IDE:

Click on

Help

|

Install New Software…

and install

Click on

Help

|

Eclipse Marketplace

, search for

AWS

, and install

We will install using the first method. Now please perform the following steps and refer to the following screenshot:

Once you click on

Install New Software

, it will open the 

Available Software

dialog box.

In this dialog box, you have to click on

Add

to add the AWS toolkit.

 It will open the 

Add Repository

dialog box.

 In this dialog box, add the 

Name

and

Location

as

https://aws.amazon.com/eclipse

.

 Click on

OK

.

On the next page, you will see all available AWS tools. You can select

AWS Core Management Tools

and other tools as per your project requirements:

A preview page will display to confirm the installation details. Click on

Next

and you will see the

Review License

page, where you click 

Accept

and 

Finish

to complete the AWS installation:

After successful installation, your IDE will restart. After restarting, you will see the AWS toolkit icon in the toolbar:

Now let's create a sample AWS Java project. When you click 

New AWS Java Project….

, you will see the following screen. You need to add the necessary details for the project. Here I have used

S3Demo

as my

Project name

,

com.packt

 as my

Group ID

, and

examples

as my

Artifact ID

. I have selected

Amazon S3 Sample

from the Java samples:

If you want to add new AWS accounts, click on the 

Configure AWS accounts…

link. You can add the credentials in two ways:

Add

Profile Name

,

Access Key ID

, and

Secret Access Key

under the 

Profile Details

 screen.

You can specify your credentials file path or browse to your credentials file. Once you have added that, you can select

Apply and Close

:

Now it will generate the projects and create the necessary files. You can see the following screen with generated files. It will generate a 

S3Sample.java

file. You can right-click on this file and select

Run As

|

Java Application

. It will create the bucket, list the bucket, upload a new object to S3, download an object, list an object, delete an object, and delete the bucket:

So far, you have learned how to add the AWS Java toolkit into your project using Maven, Gradle, and Eclipse IDE. Now we will see how to add the AWS SDK for Node.js into your project.

AWS SDKs for IoT devices

IoT is the Internet of Things, where the internet is connected with things such as software, hardware, physical devices, home appliances, vehicles, or any kind of sensor, actuator, or network, and exchanges data between them. In simple terms, your thing or device will collect, sense, and act on data and send it to an other device from the internet. These connected devices are communicating with each other from various technologies and flow data autonomously. IoT devices can be useful for consumer applications, enterprise applications, smart homes, agriculture, and many industries.

AWS provides different kinds of SDK for the IoT to connect securely and seamlessly to your hardware devices.

The following are the different kinds of AWS SDK:

AWS SDKs for mobile devices

AWS provides different kinds of SDKs to connect securely and seamlessly to your mobile devices.

The following are the different kinds of AWS SDKs. In this chapter, we will cover AWS SDK for Android:

AWS Mobile SDK for Android

For Android, AWS provides an open source SDK that is distributed under an Apache license. This will provide libraries, code examples, and documentation to develop mobile applications using AWS.

Currently, AWS supports the following services for AWS Mobile SDK for Android:

Amazon Cognito Identity

:

Controls authentication and provides temporary credentials to connect devices and/or other untrusted environments

Saves user data and synchronizes it

Manages identity throughout the lifetime of an application

We will discuss this topic in more detail in

Chapter 6

,

 User Authentication with AWS Cognito

Amazon Cognito Sync

:

Enables application-specific data to sync on cross-devices

Syncs user data across the web and devices

Caches data locally so the device can access data offline; it can sync when the device is online

Notifies other devices if sync push is set up

Mobile Analytics

:

Collects, analyzes, visualizes, and understand the apps

Generates reports for users, sessions, in-app revenues, and events

Filters reports by data range and platform

Amazon S3

:

Mobile apps can directly access Amazon S3 to store data

Provides Transfer Utility/Transfer Manager (Older Version) to consume S3 services

DynamoDB

:

SDK contains a high-level library to access and work with DynamoDB Object Mapper

Can perform CRUD operations such as Create, Read, Update, and Delete for client-class

Amazon Kinesis

:

Provides simple, high-level design

Stores real-time data on disk and sends it all together to save battery life

Lambda

:

Lambda function receives app and device data to create a personalized and rich app experience

Amazon Lex

:

You can integrate a chat box on mobile devices

Amazon Polly

:

Mobile SDK provides add text to speech integration for Amazon Polly

Amazon Pinpoint

:

Integrates Amazon Pinpoint to send push notification campaigns from Android apps

Currently, Android 2.3.3 (API level 10) or higher can use AWS Mobile SDKs.

Now let's understand how to set up the AWS Mobile SDK and then we will see an example with Amazon S3.

The AWS Mobile SDK is available at the following two resources for download:

http://sdk-for-android.amazonwebservices.com/latest/aws-android-sdk.zip

https://github.com/aws/aws-sdk-android

This SDK includes class libraries, code example, and documentation:

Class libraries will include the Java Archive Files (

.jar

) files for the AWS services. You can include the class for the service which you are using in your applications.

The code example provides you with an example of using the service in your application using class libraries.

Documentation is reference material for the use of AWS Mobile SDK for Android.

AWS Secure Token Service (STS) and Amazon Cognito Identity are bundled with the AWS Mobile SDK core library. You will get a compile-time error if you include it as a separate JAR file.

In the next section, you will see how to set up AWS Mobile SDK for Android.

AWS Mobile SDK setup for Android