Cloud Tutorial: AWS IoT CSE 520S Spring, Jan. 16, 2020 Ruixuan Dai - - PowerPoint PPT Presentation

Cloud Tutorial: AWS IoT

CSE 520S Spring,

• Jan. 16, 2020

Ruixuan Dai

XaaS: Basics in Cloud Computing

Cloud Computing

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Ø Cloud computing provides shared pool of configurable computing resource to end users on demand Ø Three service models

q IaaS (Infrastructure as a Service): virtual machines, storage,

network …

q PaaS (Platform as a Service): execution runtime, middleware,

web server, database, development tool …

q SaaS (Software as a Service): email, virtual desktop, games …

Cloud Services: On-premise Software

Ø Traditional

Ø installed and runs on personal computer Ø You Manage and Deploy

q Hardware q OS q Software

Ø Example

q This presentation

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APP Data Runtime Middleware OS Virtualization Server Storage Network You Manage

Infrastructure as a Service (IaaS)

Ø IaaS

q "physical server box” q Virtual Machine

• Memory
• Storage
• CPU
• Network

Ø Example

q AWS EC2 q AWS EFS

Ø Use case

q Build up you

VM cluster

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You Manage APP Data Runtime Middleware OS Virtualization Server Storage Network Service Provider Manages

Web Service

Platform as a Service (PaaS)

Ø PaaS

q You get a framework q Host Application q Tools

Ø Example

q AWS IoT

Ø Use case

q Build up you’re smart A/C

controller

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You Manage Service Provider Manages APP Data Runtime Middleware OS Virtualization Server Storage Network

PaaS Example: AWS IoT

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Tools Framework

The essence is MESSAGING MIDDLEWARE Send messages between sensors and servers…

Software as a Service (SaaS)

Ø SaaS

q You get a whole solution

Ø Example

q Gmail q Dropbox q Office365

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Service Provider Manages APP Data Runtime Middleware OS Virtualization Server Storage Network

XaaS: A Recap

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APP Data Runtime Middleware OS Virtualization Server Storage Network You Manage You Manage APP Data Runtime Middleware OS Virtualization Server Storage Network Service Provider Manages You Manage Service Provider Manages APP Data Runtime Middleware OS Virtualization Server Storage Network Service Provider Manages APP Data Runtime Middleware OS Virtualization Server Storage Network

On-Premise IaaS PaaS SaaS

Tutorial: Hello! AWS IoT!!

Internet-of-Things

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Ø Things (Devices)

q Many of them

• Different Types
• Isolated Systems

q Data and Command

• Sensing the world
• Give Response

q Challenge

• United: Connected + Communication
• Smart: Data Analytics + Strategy

Source: https://aws.amazon.com/iot-platform/ http://www.brain-smart.net/smart-brain-health-blog/page/2/#axzz4W4oSp8a6

Solution: AWS IoT

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United: Connect + Communication Smart: Other Cloud Service Data Storage Machine Learning

Source: https://aws.amazon.com/iot-platform/

Stated: “Thing Shadow”

Tutorial: Hello AWS IoT!

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Source: https://aws.amazon.com/iot-platform/

Publish Amazon SNS Forward Subscribe Temperature sensor Period: 5s (0.2Hz) Message middleware

Pointers

Ø Amazon IoT

q http://docs.aws.amazon.com/iot/latest/developerguide/what-is-

aws-iot.html

Ø Raspberry Pi

q https://www.raspberrypi.org/

Ø Resource list for course projects

q http://cps.cse.wustl.edu/index.php/List_of_Projects

Ø Apply for $40 credits for Amazon AWS

q https://aws.amazon.com/education/awseducate/apply/

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Get into AWS Manage Console

Ø Create your own AWS account Ø Sign In IoT Manage Console

q https://aws.amazon.com/iot/

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Step 1: Create a Virtual "Thing”

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AWS IoT Virtual “Thing” / Shadow

Ø A Thing in AWS IoT has a “shadow”

q a JSON document that is used to store and retrieve

current state information for a device.

• E.g. Battery level, Connectivity, data

q Shadow is a special topic in AWS IoT

Ø Certificates and policy

q Authentication, Security q Permission and roles A “Dashboard” to show some info Certificates -> your ID Policy -> your permission book

Create a thing

Ø 1. AWS IoT Menu

• Things è Create

Ø 2. Give a name

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The keys and cert will be used later

Create Policy

Ø A policy is attached to a key/cert

q It tells what this key/cert can do

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This is the policy you created

Attach Policy

Ø Attach Policy to the key/cert

q A policy tells what this key/cert can do

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Click the cert

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AWS Things Summary

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q Shadow: Store/retrieve some information q Certificate: authenticate the device q Policy: define the roles/permissions of the

certificate

Let’s test it online!

Basic Interact: Publish to the “Shadow”

Ø Get your “Shadow”

q In your Thing Page

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Shadow Topic

Find your “Shadow” Topic

Ø Topic: can be seen as the “address”

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Shadow Topic

Ø Using Embedded Test Client to Test

q In AWS IoT Page

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Your Shadow Topic Topic Message

Shadow Message

{ "state": { "reported":{ "time":"13:45", "temperature":"25"} }, "message": "Hello from AWS IoT console"}

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A Shadow Message is a JSON object. Shadow message has strict formats. Please see https://docs.aws.amazon.com/iot/latest/developerguide/device- shadow-document-syntax.html

Update Shadow

Ø In your “Thing” Page

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Basic Interact: Subscribe/Publish

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Ø You can define your own Topic Ø Once you have a subscriber that is subscribed to the topic, the subscriber can receive the message

Basic Interact: Subscribe/Publish

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Ø You can define your own Topic Ø Once you have a subscriber that is subscribed to the topic, the subscriber can receive the message

a “Topic” I am going to publish a tweet. “Today is beautiful ” Twitter account Received message from Trump: “Today is beautiful” Subscriber Publisher

Temperature sensor Period: 15s (4Hz)

Step 2: Connect a “Physical” Device

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AWS IoT Virtual “Thing” / Shadow Attach Certificate Policy Copy AWS SDK Client AWS IoT SDK

Connect your Device

Ø Copy certificates to your physical things

q Note: through scp utility q Downloaded before!

Ø Choose your AWS SDK (support MQTT)

q Node JS q Python (pip install AWSIoTPythonSDK ) q Java q …

Ø Set up your client with SDK and the certificates

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Some Notes

Ø 1. Copy the certificates/keys to your real thing Ø 2. You will need the endpoint and port (8883)

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Host(Endpoint) Modify the code

SDK and Demo Codes

Ø https://github.com/aws/aws-iot-device-sdk-python Ø https://github.com/aws/aws-iot-device-sdk-python/blob/ master/samples/basicPubSub/basicPubSub.py

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More: Rule Engine, Link with SNS services

Ø Simple Notification Service

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Publish Amazon SNS AWS IoT Virtual “Thing” / Shadow Forward Topic: CSE521_Tutorial Subscribe Subscribe

AWS

EC2 t2.micro

Create a Rule in Amazon IoT

Ø Add a query to filter your interesting topic (event) Ø Add an Action:

q Forward this message to SNS q Specify Dest ARN q Enable Rule

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Notification on SMS & Email

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One More Thing: Account Security

Ø DON’T UPLOAD YOUR KEY PUBLICLY!!!

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Time to Open Source!

Source: WeChat Subscriptions: 西乔《神秘的程序员们 39》 Geek Life Chpt 39.

What if… $50,000 AWS Bill!

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Source: https://www.quora.com/My-AWS-account-was-hacked-and-I-have-a-50-000-bill-how-can-I-reduce-the-amount-I-need-to-pay

Project 0: AWS IoT

Ø Create Your AWS account Ø Setup your things with certificates and policy Ø Publish and subscribe a topic

q Update your thing’s Shadow with AWS IoT Test Console

• See tutorial

q Use your computer as a “Thing” to update your thing’s Shadow

• Install AWS IoT SDK, copy the certs, modify the code
• Publish message to your Shadow Topic from your computer

q Publish and Subscribe on your computer

• Publish a message to a topic in one client from your PC
• Subscribe to the same topic in another client from your PC
• Hints: the “clientID” cannot be the same for the two client. The two

clients can share the same certs. You can use the shadow as the topic.

• (You should see one terminal sends massage, and another terminal

receives that message)

Ø Email your results (inline with some screenshots, you don’t need to write a report) to dairuixuan@wustl.edu

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Some project examples

Ø Gesture recognition with smartwatch

q Recognize the specific gesture to control the light

Ø Smart pet feeder

q Food dispenser with schedules and smart control

Ø Smart mirror

q Show personalized info in the mirror

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Sensing, Connecting, Smart If you have any question about the project, feel free to send me an Email

Thanks!

Ruixuan Dai