apidays LIVE Australia 2020 - Building a scalable API platform for an IoT ecosystem by Archanaa Ravikumar & Pooja Subramanian
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The document discusses architecting scalable software platforms for IoT applications, detailing various device integrations such as sensors, actuators, and communication protocols. It emphasizes the importance of security, continuous improvement, and interoperability across devices within smart building applications. Additionally, it outlines specifications for an open connectivity framework to enhance user experiences and manage data effectively.
![HIERARCHY OF ACTORS
Hotel Timbaktoo
Floor 2Floor 1
Room 1 Room 2
Thermostat
Floor 3
Air-conditioner
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apidays LIVE Australia 2020 - Building a scalable API platform for an IoT ecosystem by Archanaa Ravikumar & Pooja Subramanian
- 1. Architecting Scalable Software Platforms for IoT Applications Archanaa Ravikumar Lead Engineer, BCG Digital Ventures Pooja Subramanian Lead Consultant, ThoughtWorks Technologies
- 2. IoT STACK Smart light Temperature Sensor Security Camera Level 1-2 Sensors Actuators Devices Pressure sensor adapter Camera adapter ZWave adapter Level 3 Adapters Gateway On-Prem Level 4-5 Cloud Platform Services Level 6 Mobile, Web Applications Zigbee adapter Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0" Heat Sensor Air cooler Sprinkler
- 3. AN IoT APPLICATION Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 4. IoT PLATFORM - WHAT’S DIFFERENT? Scale Security Continuous Improvement Icons made by Freepik from www.flaticon.com Context Mapping Device Representation
- 5. CONTEXT MAPPING Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0" Mostly uncategorized control data for multiple building applications Smart Building Applications in Cloud or on Prem Outside Air Temperature Humidity Room Temperature Occupancy Status Time Series Data Sensor Metadata GUI Data Event Data
- 6. DEVICE REPRESENTATION MODELS Actor Model Device Twin OCF
- 7. ACTOR MODEL ● Reliable actor model ● Concurrent processes that run with individual context ● Representation of relationship between devices ● Each actor can send messages to other related actors ● Persisted actor state Thermostat actor AC actor Fire alarm actor Sprinkler actor Control unit actor Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 8. HIERARCHY OF ACTORS Hotel Timbaktoo Floor 2Floor 1 Room 1 Room 2 Thermostat Floor 3 Air-conditioner { "id" : "512cde1a-2343-4b36-a045-603732b3f30a", "name" : "Hotel Timbaktoo", "documentType" : "Building", "floors" : [ "245866c5-87d4-4426-b8f8-aed71212de84", "e52e3a21-2eb2-43ed-bbb3-5c7e5c0cad7f", "c7e1226a-d77e-4c21-988d-28f88443bb0a" ], "path" : "hotels/512cde1a-2343-4b36-a045-603732b3f30a" ... ... } Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 9. Device Twin Tags Properties Desired Reported Read, receive change notifications Read, write Read, write change notifications Read change notifications Read, write change notifications Device app Backend DEVICE TWIN { "deviceId": "devA", "etag": "AAAAAAAAAAc=", "status": "enabled", "statusReason": "provisioned", "statusUpdateTime": "0001-01-01T00:00:00", "connectionState": "connected", "lastActivityTime": "2015-02-30T16:24:48.789Z", "cloudToDeviceMessageCount": 0, "authenticationType": "sas", "x509Thumbprint": { "primaryThumbprint": null, "secondaryThumbprint": null }, "version": 2, "tags": { "$etag": "123", "deploymentLocation": { "building": "43", "floor": "1" } }, "properties": { "desired": { "telemetryConfig": { "sendFrequency": "5m" }, "$metadata" : {...}, "$version": 1 }, "reported": { "telemetryConfig": { "sendFrequency": "5m", "status": "success" }, "batteryLevel": 55, "$metadata" : {...}, "$version": 4 } } } Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 10. 1. Provide specifications, code and a certification program to enable manufacturers to bring OCF Certified products to the market that can interoperate with current IoT devices and legacy systems. 2. Make the end user’s experience better by seamlessly bridging to other ecosystems within a user’s smart home and ensure interoperability with OCF compliant devices. OCF
- 11. DEFINITION OF A THING Image and details from open connectivity org https://openconnectivity.org/specs/OCF_2.0_Specification_Overview.pdf
- 12. DEFINITION OF A THING Image and details from open connectivity org https://openconnectivity.org/specs/OCF_Core_Specification_v2.2.0.pdf
- 13. ● Number of edge devices ● Volume of data ● Frequency of data transmitted SCALE Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 14. Gateway ● Provide bi-directional communication between edge devices and controllers ● Register and provision devices ● Enable improved security ● Abstract multiple protocols used for edge-cloud connectivity Telemetry Service ● Accept a continuous stream of device metadata ● Process all incoming telemetry data ● Use rule-based routing of data to other services Time series Database ● Ingest change that sensors capture over a range of time ● Handle high write loads ● Improve efficiency by treating time as a first class citizen Cache ● Store pre-processed data ● Aid in quicker decision making ● Allow configurable cache updates ● Aid in availability when systems go down temporarily SCALE Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 15. ● Platform security ○ Roles and access controls ● 2FA for device authorization ○ Certificate on the device that needs to be validated by the app ○ QR code scanning ● Absence of telemetry ● Data confidentiality ● Protocol security ● Firmware vulnerabilities ○ Patch updates SECURITY Icons made by Good Ware from www.flaticon.com is licensed by Creative Commons BY 3.0"
- 16. ● CI/CD pipeline across devices and platforms ● Unit tests at mobile, web, cloud applications and devices ● Monitoring post deployments across all layers ● OTA updates and graceful upgrades ● Complexity caused by ○ Version updates ○ Protocol changes CI/CD Commit stage Automated Testing Deploy to test devices Integrated testing Release
- 17. App Device command/query API Gateway Device SensorSensor Other services Device Management Service Telemetry Service IoT Hub Sends device command Device Data Receives telemetry Backend Services AMQP Bluetooth (Installation) App Zwaveproprietary Monitoring Dashboard Timeseries DB Web socket comms SAMPLE ARCHITECTURE
- 18. Thank You Archanaa Ravikumar Lead Engineer, BCG Digital Ventures archanaa.ravikumar@bcgdv.com https://www.linkedin.com/in/ravikumar-archanaa/ Pooja Subramanian Lead Consultant, ThoughtWorks Technologies poojas@thoughtworks.com https://www.linkedin.com/in/pooja-subramanian-17bbba3b/