Liferay as a headless platform
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This is the presentation I delivered at the Liferay North American Symposium 2017 and presents our vision for making Liferay the best Headless Platform out there. It specifically covers how we are using the power of Hypermedia + Shared Vocabularies to build APIs designed to evolve and extremely easy to use and consume
![@jorgeferrer #LSNA17
{
"resources": {
"people": {
"href": "http://api.domain.io/o/api/p/people"
},
"organizations": {
"href": "http://api.domain.io/o/api/p/organizations"
},
[..]
"sites": {
"href": "http://api.domain.io/o/api/p/sites",
"hints": {
"media-type": "application/ld+json"
}
}
}
}
A Single Home Endpoint
http://api.domain.io/o/api
Consumers become
inmune to changes
in URLs
JSON Home Internet Draft](https://image.slidesharecdn.com/liferayasaheadlessplatform-nas-171017190506/85/Liferay-as-a-headless-platform-36-320.jpg)
![@jorgeferrer #LSNA17
{
..
"actions": [
{
"name": "add-blog-posting",
"title": "Add Blog Posting",
"method": "POST",
"href": "http://localhost:8080/o/p/blogs",
"type": "application/json",
"fields": [
{ "name": "headline", "type": "text" },
{ "name": "author", "type": "Person" },
]
}
],
…
}
Forms in APIs
Consumers don’t
hardcode the fields
or types
Siren](https://image.slidesharecdn.com/liferayasaheadlessplatform-nas-171017190506/85/Liferay-as-a-headless-platform-38-320.jpg)
![[AWS Media Symposium 2019] 고객사례 | SBS Web Service Cloud Migration Process - 김...](https://cdn.slidesharecdn.com/ss_thumbnails/03sbswebservicecloudmigrationprocesssbs-191029011303-thumbnail.jpg?width=560&fit=bounds)
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Liferay as a headless platform
- 1. Liferay as a Headless Platform Introducing a New Breed of Secure Hypermedia APIs Jorge Ferrer, VP Engineering Michael Han, VP Operations
- 2. @jorgeferrer #LSNA17 H e a d l e s s s o f t w a r e i s s o f t w a r e c a p a b l e o f w o r k i n g w i t h o u t a g r a p h i c a l u s e r i n t e r f a c e W i k i p e d i a “
- 3. @jorgeferrer #LSNA17 Why support Headless?
- 4. @jorgeferrer #LSNA17 ONE USER, MANY DEVICES AND APPLICATIONS SPA
- 5. @jorgeferrer #LSNA17 APIs ARE ENABLERS SPA
- 6. @jorgeferrer #LSNA17 Th e A P I e c o n o m y i s a n e n a b l e r f o r t u r n i n g a b u s i n e s s o r o r g a n i z a t i o n i n t o a p l a t f o r m . P l a t f o r m s m u l t i p l y v a l u e c r e a t i o n . G a r t n e r “
- 7. @jorgeferrer #LRDEVCON Who must have access to the API?
- 8. @jorgeferrer #LSNA17 PARTNER PRIVATE PLATFORM PUBLIC API TARGET AUDIENCE 3rd party developers Trusted Companies Internal Teams Increased challenges on: Security and usage control Change management
- 9. @jorgeferrer #LRDEVCON What does Liferay offer today?
- 11. @jorgeferrer #LRDEVCON How can we improve?
- 12. @jorgeferrer #LSNA17 Security & Control
- 13. #LRDEVCON Authentication Authorization Service Access Quotas 21 Headless Service Security Requirements
- 14. #LRDEVCON Authentication SSO solutions are already supported by Portal LDAP, SAML, CAS, NTLM, OpenID, Facebook, Google, OpenAM/SSO, Siteminder
- 15. #LRDEVCON Liferay to be an OAuth 2.0 provider Giving end-users the ability to delegate permissions to apps • An authorization protocol for web APIs • Protocol widely adapted on the web • Multiple authorization granting flows available
- 16. #LRDEVCON Authorization Resource Owner – the User Client – a client application (e.g. mobile application) Authorization Server – Issues access token for clients approved by the owner. Resource Server – API server providing API resources
- 17. #LRDEVCON Authorization Flows Client Credential Grant Resource Owner Grant Authorization Code Grant Implicit Grant
- 18. #LRDEVCON For applications to authenticate on behalf of itself Useful when getting non-user specific information from the portal Easy migration from legacy API authentication schemes (Basic, Digest etc.) Client Credential grant flow 1. Client ID & Client Secret 2. Access token
- 19. #LRDEVCON 2. Resource Owner Password Credentials 3. Access token Resource Owner Credentials grant flow 1. Resource Owner Password Credentials Simple authentication by providing username & password Exchanged for access token, no password storage. Suitable for trusted first party clients.
- 20. Stian Sigvartsen | @stiansigvartsen
- 21. #LRDEVCON User’s trust boundary What happened to my users? User trust issues with providing password Only suitable for 1st party web and mobile applications 2. Resource Owner Password Credentials 3. Access token 1. Resource Owner Password Credentials
- 22. #LRDEVCON Authorization Code grant flow Best option for webserver and User agent apps No username & password given to app Can be used for mobile apps, but requires popping a web browser User’s trust boundary 5. Access token 2. User authenticates & authorizes 4. Authorization Code & Redirect URI 1. Client ID & Redirect URI 3. Authorization code
- 23. #LRDEVCON Pre-Authorized tokens for devices Building a unified experience across multiple devices • Maintaining a fully native experience for each device • Generate pre-authorized tokens via a web portal • Mobile app receives the token via • Onscreen QR code scanned with camera
- 24. Stian Sigvartsen | @stiansigvartsen
- 25. #LRDEVCON One protocol to unify them all! OAuth 2.0 provider allows API authentication via all new and existing web SSO solutions available to Liferay Portal • Authorization Code grant flow • Pre-Authorised tokens
- 26. #LRDEVCON Your server resources are valuable, protect them Service Access Quotas
- 27. #LRDEVCON Service Access Quotas • Important for building large scale systems with untrusted clients • Protect against service abuse • Extracts characteristics of API requests and matches against configured quotas • For example • allow 100 requests • to a service method • within 5 minutes • for each client IP address and User ID combination
- 28. Stian Sigvartsen | @stiansigvartsen
- 29. @jorgeferrer #LSNA17 Best of Breed APIs
- 30. @jorgeferrer #LSNA17 PARTNER API PRIVATE API PLATFORM PUBLIC API FOR ALL MODERN API NEEDS
- 31. @jorgeferrer #LSNA17 1Very easy to use for any developer
- 32. @jorgeferrer #LSNA17 Reduce the need for documentation Embrace REST Best Practices Adopt Standards Abstract Liferay Internals HOW? Promote Reusability
- 34. @jorgeferrer #LRDEVCON How? REST Hypermedia Standard Models Controls Best Practices Decoupling Consumer and API Provider API
- 35. @jorgeferrer #LRDEVCON Hypermedia Controls Single Endpoint Consumers only know the home URL And are able to interpret the listed resources Standardized Link Types Consumers can follow links whose type is known IANA standardizes many of them We can add more on top
- 36. @jorgeferrer #LSNA17 { "resources": { "people": { "href": "http://api.domain.io/o/api/p/people" }, "organizations": { "href": "http://api.domain.io/o/api/p/organizations" }, [..] "sites": { "href": "http://api.domain.io/o/api/p/sites", "hints": { "media-type": "application/ld+json" } } } } A Single Home Endpoint http://api.domain.io/o/api Consumers become inmune to changes in URLs JSON Home Internet Draft
- 37. @jorgeferrer #LSNA17 { "_embedded": {...}, "total": 43, "count": 30, "_links": { "first": { "href": "http://localhost:8080/o/api/p/groups?page=1&per_page=30" }, "next": { "href": "http://localhost:8080/o/api/p/groups?page=2&per_page=30" }, "last": { "href": "http://localhost:8080/o/api/p/groups?page=2&per_page=30" } } } Hypermedia pagination Consumers become simpler, leaving logic to the server IANA Link Relations Standard
- 38. @jorgeferrer #LSNA17 { .. "actions": [ { "name": "add-blog-posting", "title": "Add Blog Posting", "method": "POST", "href": "http://localhost:8080/o/p/blogs", "type": "application/json", "fields": [ { "name": "headline", "type": "text" }, { "name": "author", "type": "Person" }, ] } ], … } Forms in APIs Consumers don’t hardcode the fields or types Siren
- 39. @jorgeferrer #LRDEVCON Standard Models (aka Shared Vocabularies) schema.org and others schema.org: 597 types and 867 properties ActivityStreams, microformats, … Well defined custom Models Don’t just expose your internal models Thinking terms through
- 40. @jorgeferrer #LSNA17 Mapping internal terms to standards Internal schema.org User + Contact Person birthday birthDate middleName additionalName screenName alternateName emailAddress email lastName familyName firstName givenName fullName name Internal schema.org BlogsEntry BlogPosting headline title alternativeHeadline subtitle description description user creator user author articleBody content aggregateRating ratings
- 41. @jorgeferrer #LSNA17 Consumer devs don’t need to know Liferay internals, which are now free to evolve Mapping internal terms to standards Internal schema.org + custom Group (site=1) WebSite name name groupKey alternateName user creator Ratings Service aggregateRatings friendlyURL (_self) / (@id) BlogsEntry Service blogs manualMembership (open question)
- 42. @jorgeferrer #LSNA17 3 Ready for real world needs
- 43. @jorgeferrer #LSNA17 Ready for real world needs Multi-language1 2 3 Embed multiple resources to avoid chattiness Decide which fields to return Very efficient HTTP caching Binary response formats Consumers control the response Accept-Language header
- 44. @jorgeferrer #LSNA17 APIs that achieve the Glory of REST Source: martinfowler.com/articles/richardsonMaturityModel.html
- 45. @jorgeferrer #LSNA17 Let’s see it in action
- 48. @jorgeferrer #LSNA17 Build your Custom APIs
- 49. @jorgeferrer #LSNA17 1Customize out-of-the-box API • Turn resources on and off as desired • Develop custom response formats
- 50. @jorgeferrer #LSNA17 2Implement your custom APIS • Leverage JAX-RS • Use Vulcan Architect to simplify: • Mapping to standard models • Creation of links to other resources
- 51. @jorgeferrer #LSNA17 Build any type of consumer
- 52. @jorgeferrer #LSNA17 Bots Mobile Apps Microservices Optimal for all types of consumers Web Applications SPA Kiosks Smart Watches
- 53. @jorgeferrer #LSNA17 Amazing results with our first Mobile App 80%+ of the code is reusable Vulcan Consumer Thing Screenlet Much easier to provide offline support
- 54. @jorgeferrer #LRDEVCON 02 03 Guidelines Well documented guidance to build APIs designed to evolve 01 Sharing with we have learned and built Project codename Vulcan Architect Making a breeze to build modular Hypermedia APIs Consumer Does all the repetitive work for consuming a Hypermedia API
- 56. @jorgeferrer #LRDEVCON New API Infrastructure 01 New Breed of APIs 02 OAuth 2 03 THE PLAN Now 7.1 (2018)
- 57. @jorgeferrer #LSNA17 Decoupled Evolvable Efficient Easy Customizable Strong Security Strong Control
- 58. @jorgeferrer #LSNA17 You choose Liferay with its UI Headless Liferay Both
- 59. @jorgeferrer #LSNA17 Jorge Ferrer @jorgeferrer Did you like it? Vote for it in the Events App! Michael Han
- 60. @jorgeferrer #LSNA17 Image Credits This presentation has photos from Pana Vasquez , Oumaima Ben Chebtit, Patrick Tomasso, jesse orrico, Toa Heftiba, Jeremy Thomas, John Mark Arnold, Linda Xu, 35mm, Todd Quackenbush, Sawyer Bengtson, Jorge Gonzalez, Justin Main, Vadim Sherbakov, Kimon Maritz and Matt Jones on Unsplash Thanks so much, for your amazing photos.