This document provides an overview of AWS IoT and a tutorial on how to connect a physical device to AWS IoT. It begins with explaining the cloud computing service models of IaaS, PaaS, and SaaS. It then discusses AWS IoT as an example of PaaS, describing how it provides a framework for connecting devices to send and receive messages. The tutorial walks through creating an AWS IoT "thing", publishing messages to its shadow, and discusses how to connect a physical device using an AWS SDK. It also explains how to set up rules to forward messages to other AWS services like SNS.

1. Cloud Tutorial: AWS IoT
CSE 521S Fall
Sep. 17, 2020
Ruixuan (Corey) Dai

2. XaaS: Basics in Cloud Computing

3. 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 …

4. 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

5. 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 youVM cluster
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You
Manage
APP
Data
Runtime
Middleware
OS
Virtualization
Server
Storage
Network
Service
Provider
Manages
Web
Service

6. 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

7. PaaS Example: AWS IoT
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Tools
Framework
The essence is MESSAGING MIDDLEWARE
Send messages between sensors and servers…

8. 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

9. 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

10. Tutorial: Hello! AWS IoT!!

11. Internet-of-Things
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Ø Internet-of-Things
q Devices
• DifferentTypes
§ Sensors, actuators
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

12. 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”

13. Tutorial: Hello AWS IoT!
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Source: https://aws.amazon.com/iot-platform/
Publish to a topic
Amazon SNS
Forward
Subscribe to a topic
Temperature sensor
Period: 5s (0.2Hz)
Message middleware
Ø Key concepts:
q Publisher (e.g. Sensor), Subscriber (e.g. Server), Topic
• Topic is used to identify the message.
Ø Not a traditional “peer-to-peer” communication.

14. Basic Interact: Subscribe/Publish
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Ø You can define your own Topic (Twitter Account)
Ø Subscriber can receive the message you published to your
topic
Follow
“subscribe”
a “Topic”
I am going to publish a
tweet.
“Today is beautiful ”
Twitter account
Tweet
“Publish”
Received message
from Trump:
“Today is beautiful”
Subscriber
Publisher

15. Resources
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/
15

16. 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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17. Step 1: Create a Virtual "Thing”
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AWS IoT
Virtual “Thing”
/ Shadow
Ø Virtual “Thing”: a virtual copy of your thing
q A Thing in AWS IoT has a “shadow”
• 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

18. Create a thing
Ø 1.AWS IoT Menu
• Things è Create
Ø 2. Give a name
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20. 20

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The keys and cert will be used
later

22. Create Policy
Ø A policy is attached to a key/cert
q It tells what this key/cert can do
22

23. 23
Here, we grant it all permissions for demo!

24. 24
This is the policy you created

25. Attach Policy
Ø Attach Policy to the key/cert
q A policy tells what this key/cert can do
25
Click the cert you
just created

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27. 27

28. 28
Now, you have a virtual thing on AWS!

29. AWS Things Summary
29
q Certificate: authenticate the device
q Policy: define the roles/permissions of the
certificate
q Virtual copy of the thing (Shadow): Store/retrieve
some information

30. Let’s test it online!

31. Basic Interact: Publish to the “Shadow”
Ø Get your “Shadow”
q In your Thing Page
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Shadow Topic
Shadow is a special topic

32. Find your “Shadow” Topic
Ø Topic: can be seen as the “address”
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https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html?icmpid=docs_iot_console
Shadow Topic:
$aws/things/cse521/shadow/update

33. Ø Using Embedded Test Client to Test
q In AWS IoT Page
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Your Shadow Topic
Topic Message

34. Shadow Message
{ "state": {
"reported":{
"welcome": "CSE521s",
"time":"13:45",
"temperature":"25"}
},
"message": "Hello from CSE521s console"}
34
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

35. Update Shadow
Ø In your “Thing” Page
35

36. 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

37. Temperature sensor
Period: 5s (0.2Hz)
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

38. Connect your Device
Ø Copy certificates to your physical things
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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39. Some Notes
Ø 1. Copy the certificates/keys to your real thing
Ø 2.You will need the endpoint and port (8883)
Ø 3. Set up your configuration of the code with SDK
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Host(Endpoint)
Change your code
accordingly!

40. 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
40

41. 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

42. 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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43. Notification on SMS & Email
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44. One More Thing: Account Security
Ø DON’T UPLOADYOUR 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.

45. 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

46. 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
46
Sensing, Connecting, Smart
If you have any question about the project,
feel free to send me an Email

47. Thanks!
Ruixuan Dai