FIWARE Global Summit - Building Your Own IoT Agent
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The document outlines guidelines for building a custom IoT agent using Node.js and C++, detailing frameworks, northbound and southbound features, and protocol specifics for CoAP and JSON. It suggests using the iotagent-node-lib and various npm packages to simplify development, emphasizing ease of implementation with minimal coding. Key resources and links for further exploration are provided.
FIWARE Global Summit - Building Your Own IoT Agent
- 1. FIWARE Building your own IoT Agent Daniel Calvo IoE Lab. ATOS Research & Innovation daniel.calvo@atos.net @danicalvoalonso
- 2. Building your own IoT Agent: overview § Frameworks: Node.js and C++ • https://github.com/Fiware/iot.IoTagent-node-lib • https://github.com/telefonicaid/fiware-IoTAgent-Cplusplus § North bound features provided by the platform: • NGSI Context Provision server • NGSI Client • Device Provisioning API • Configuration API § All South bound features are protocol specific • External library • Ad-hoc development 1
- 3. Building your own IoT Agent: Node.js § Module provided in NPM Registry: • Add iotagent-node-lib to your package.json • Require it as any other module § https://github.com/telefonicaid/iotagent-node-lib/blob/master/doc/howto.md § Possible in few days/weeks: • Current agents: ~ 1000 lines of source code (supporting several transport protocols) 2 Context Server NGSI Client Device Protocol Device Registry Group Registry Provision Server IoT Agent
- 4. Building your own IoT Agent: CoAP + JSON 3 § CoAP: Constrained Application Protocol • RESTful protocol designed from scratch • Transparent mapping to HTTP • Binary protocol □ Low parsing complexity □ Small message size • Security based on DTLS (TLS/SSL for Datagrams) • IETF Standard: https://tools.ietf.org/search/rfc7252 GET /status/power PUT /control/color #00FF00
- 5. Building your own IoT Agent: CoAP + JSON 4 APPLICATION TRANSPORT SIMPLIFIED OSI NETWORK LINK PHYSICAL CoAP UDP IoT Device JSON IoT Agent UDP IPv4 TCP CoAP JSON HTTP NGSI/REST TCP CONTEXT BROKER IPv4 HTTP NGSI /REST § Protocol translation
- 6. Building your own IoT Agent: CoAP + JSON § Active attributes reporting • POST coap://{iot_agent_ip}/iot/coap { “deviceId": " #00FF00", “apiKey": “123456", “Luminosity”:”20”, “ActivePower”:”0.42” } § Southbound API: Rely on well-know libraries • coap package: https://www.npmjs.com/package/coap • coap-cli package: https://www.npmjs.com/package/coap-cli 5
- 7. Building your own IoT Agent: CoAP + JSON 1. Create a new node project • npm init 2. Add iotagent-node-lib dependency • npm install --save https://github.com/Fiware/iot.IoTagent-node-lib 3. Add your Southbound library • npm install –save coap 4. Add some usefull packages: • npm install –save async • npm install –save logops • npm install coap-cli -g 6
- 8. Building your own IoT Agent: CoAP + JSON § Start agent 7
- 9. Building your own IoT Agent: CoAP + JSON § Start south bound API: 8
- 10. Building your own IoT Agent: CoAP + JSON § Handle South Bound API requests: 9
- 11. Building your own IoT Agent: CoAP + JSON § Update attributes in IoT Agent and CB: 10
- 12. Building your own IoT Agent: CoAP + JSON § From JSON to NGSI: 11
- 13. Building your own IoT Agent: CoAP + JSON § Starting is quite easy and fast § IoT Agent supporting active attributes with CoAP and JSON data model • 1 single file • 147 lines of code • Less than two hours of coding • https://github.com/dcalvoalonso/iot.IoTagent-CoAP • https://hub.docker.com/r/danielcalvo/iotagent-coap/ 12
- 14. Thank you! http://fiware.org Follow @FIWARE on Twitter Daniel Calvo IoE Lab. ATOS Research & Innovation daniel.calvo@atos.net