RESTful Web API
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An introduction to RESTful Web API design, including HTTP request and response messaging and how they are used in the context of interaction between web or mobile apps and web services.
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RESTful Web API
- 1. March 2017 RESTFUL WEB API
- 2. March 2017 FARAMARZ SALEHPOUR Back-End Developer at ParsFiberNet @fsalehpour
- 3. March 2017 WHAT IS WEB API? Architecture: Client/Server Protocol: HTTP
- 4. March 2017 WHY SHALL WE USE WEB APIS • Network based systems & services • Web Applications (SPA) • Mobile Apps • Integration • B2B
- 5. March 2017 USE CASE EXAMPLE 3rd Party Service Web API Web App Android iOS
- 6. March 2017 REST Representational State Transfer
- 7. March 2017 REST - PROPERTIES • Client/Server architecture • Stateless • Cacheable • Uniform Interface
- 8. March 2017 REST - RESOURCES A resource is an object with a type, associated data, relationships to other resources, and a set of methods that operate on it
- 9. March 2017 REST - RESOURCES
- 10. March 2017 REST - PRESENTATION
- 11. March 2017 REST - TRANSFER HTTP: HyperText Transfer Protocol Messages: Request/Response
- 12. March 2017 REST - TRANSFER HTTP | Request Head Body Method
- 13. March 2017 REST - TRANSFER HTTP | Response Head Body Status
- 14. March 2017 REST - SECURITY
- 15. March 2017 REST - IMPLEMENTATION UNIFORM INTERFACE - URL SCHEME Resource name car Resource URI /cars Resource URL https://www.example.com/cars
- 16. March 2017 REST - IMPLEMENTATION UNIFORM INTERFACE - HTTP VERBS Create POST Read GET Update PUT Delete DELETE
- 17. March 2017 REST - IMPLEMENTATION SECURITY • Token based authentication • Header Authorization: Bearer taw0ws5Kjvelc9z0RCfyfNrVWEqyFBNv3vN53HWk
- 18. March 2017 REST - IMPLEMENTATION RESPONSE - SUCCESS 200 OK 201 CREATED 202 ACCEPTED 204 NO CONTENT 206 PARTIAL CONTENT
- 19. March 2017 REST - IMPLEMENTATION RESPONSE - CLIENT SIDE ERROR 400 BAD REQUEST 401 UNAUTHORIZED 403 FORBIDDEN 404 NOT FOUND 405 METHOD NOT ALLOWED 406 NOT ACCEPTABLE
- 20. March 2017 REST - IMPLEMENTATION RESPONSE - SERVER SIDE ERROR 500 INTERNAL SERVER ERROR 503 SERVICE UNAVAILABLE
- 21. March 2017 REST - IMPLEMENTATION CREATE A NEW RESOURCE Method POST URL https://api.example.com/cars Body {“brand”:”IKCO”, “model”:”Pars”} Response 201 CREATED {“id”: 1, “brand”: “IKCO”, “model”: “Pars”}
- 22. March 2017 REST - IMPLEMENTATION GET ALL RESOURCES Method GET URL https://api.example.com/cars Response 200 OK [{“id”: 1, “brand”: “IKCO”, “model”: “Pars”}, {“id”: 2, “brand”: “Saipa”, “model”: “Pride”}]
- 23. March 2017 REST - IMPLEMENTATION GET A SPECIFIC RESOURCE Method GET URL https://api.example.com/cars/2 Response 200 OK {“id”: 2, “brand”: “Saipa”, “model”: “Pride”}
- 24. March 2017 REST - IMPLEMENTATION UPDATE A SPECIFIC RESOURCE Method PUT URL https://api.example.com/cars/2 Body {“brand”:”Saipa”, “model”:”141”} Response 200 OK {“id”: 2, “brand”:”Saipa”, “model”:”141”}
- 25. March 2017 REST - IMPLEMENTATIONUNIFORM INTERFACE - DELETE A SPECIFIC RESOURCE Method DELETE URL https://api.example.com/cars/2 Response 200 OK
- 26. March 2017 Q & A
Editor's Notes
- Application Programming Interface a set of functions and procedures that allow the creation of applications which access the features or data of an operating system, application, or other service.
- B2B: GIS + Navigation
- Navigation business from 1 to 2 GIS service provider business level services Your web API provides customer level services Single implementation of logic
- Roy Fielding Since 2008
- No changes in the state, no storing of sessions, multiple runs of a request bears the same result
- Online book library books authors publishers
- Also mention simple Simple API keys, OAuth 1 OAuth 2 needs https