Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Hypermedia APIs with Webmachine and ROAR

Larry Staton Jr.
November 15, 2012
Technology
2
490

Hypermedia APIs with Webmachine and ROAR

Building hypermedia APIs with Webmachine and ROAR

Larry Staton Jr.

November 15, 2012
Tweet

More Decks by Larry Staton Jr.

See All by Larry Staton Jr.
Object-Oriented Programming Basics with Smalltalk
statonjr
0
500
A Tale of Two Teams
statonjr
0
47
Hypermedia with Transit
statonjr
0
71
Hazel & Keyboard Maestro: A Perfect Mac Marriage
statonjr
1
690
Zooming Out
statonjr
0
57
HTTP 101
statonjr
1
240
PUT /time
statonjr
1
70

Other Decks in Technology

See All in Technology
Oracle Base Database Service 技術詳細
oracle4engineer
PRO
6
54k
20250116_自部署内でAmazon Nova体験会をやってみた話
riz3f7
1
100
デジタルアイデンティティ人材育成推進ワーキンググループ 翻訳サブワーキンググループ 活動報告 / 20250114-OIDF-J-EduWG-TranslationSWG
oidfj
0
540
2025年のARグラスの潮流
kotauchisunsun
0
800
Copilotの力を実感！ 3ヶ月間の生成AI研修の試行錯誤＆成功事例をご紹介。果たして得たものとは・・？
ktc_shiori
0
350
AWS Community Builderのススメ - みんなもCommunity Builderに応募しよう！ -
smt7174
0
180
メールヘッダーを見てみよう
hinono
0
110
生成AIのビジネス活用
seosoft
0
110
JAWS-UG20250116_iOSアプリエンジニアがAWSreInventに行ってきた（真面目編）
totokit4
0
140
データ基盤におけるIaCの重要性とその運用
mtpooh
4
530
Git scrapingで始める継続的なデータ追跡 / Git Scraping
ohbarye
5
500
GoogleのAIエージェント論 Authors: Julia Wiesinger, Patrick Marlow and Vladimir Vuskovic
customercloud
PRO
0
160

Featured

See All Featured
We Have a Design System, Now What?
morganepeng
51
7.3k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
8
1.2k
The Cost Of JavaScript in 2023
addyosmani
46
7.2k
Building an army of robots
kneath
302
45k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
280
13k
Stop Working from a Prison Cell
hatefulcrawdad
267
20k
Embracing the Ebb and Flow
colly
84
4.5k
The Straight Up "How To Draw Better" Workshop
denniskardys
232
140k
Facilitating Awesome Meetings
lara
51
6.2k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
226
22k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
173
51k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k

Transcript

  1. Hypermedia APIs Hypermedia APIs Webmachine & ROAR 1 Larry Staton

    Jr. : @statonjr 1 Wednesday, 14 November 12

  2. Hypermedia APIs Assumptions 2 2 Wednesday, 14 November 12

  3. Hypermedia APIs REST 3 3 Wednesday, 14 November 12

  4. Hypermedia APIs 4 Constraint Promotes Tradeoff client-server UI Portability Simplified

    server stateless Scalability Reliability Efficiency non-shared caching Reduced latency Efficiency Scalability Reliability uniform interface Independent Evolution Decoupled implementation Efficiency layered system Scalability Simplified clients Higher Latency code-on-demand Extensibility Simplified clients Visibility 4 Wednesday, 14 November 12

  5. Hypermedia APIs 5 Uniform Interface 5 Wednesday, 14 November 12

  6. Hypermedia APIs HTTP 6 6 Wednesday, 14 November 12

  7. Hypermedia APIs 7 Constraint Promotes Tradeoff client-server UI Portability Simplified

    server stateless Scalability Reliability Efficiency non-shared caching Reduced latency Efficiency Scalability Reliability uniform interface Independent Evolution Decoupled implementation Efficiency layered system Scalability Simplified clients Higher Latency code-on-demand Extensibility Simplified clients Visibility 7 Wednesday, 14 November 12

  8. Hypermedia APIs “REST APIs must be hypertext-driven” 8 — Fielding,

    2009! 8 Wednesday, 14 November 12

  9. Hypermedia APIs 9 Richardson Maturity Model 9 Wednesday, 14 November

    12

  10. Hypermedia APIs Hypermedia 10 10 Wednesday, 14 November 12

  11. Hypermedia APIs Media Types 11 11 Wednesday, 14 November 12

  12. Hypermedia APIs 12 Media Type Hypermedia? text/html application/atom+xml application/json application/hal+json

    12 Wednesday, 14 November 12

  13. Hypermedia APIs HTTP 13 13 Wednesday, 14 November 12

  14. Hypermedia APIs 14 14 Wednesday, 14 November 12

  15. Hypermedia APIs Webmachine 15 15 Wednesday, 14 November 12

  16. Hypermedia APIs Resources 16 16 Wednesday, 14 November 12

  17. Hypermedia APIs 17 class HomeResource < Webmachine::Resource def allowed_methods %W[GET]

    end def expires Time.now + 2.weeks end def languages_provided [“en-us”] end end 17 Wednesday, 14 November 12

  18. Hypermedia APIs 18 allow_missing_post? allowed_methods base_uri charsets_provided content_types_accepted content_types_provided create_path

    delete_completed? delete_resource encodings_provided expires finish_request forbidden generate_etag is_authorized? is_conflict? known_content_type? known_methods language_chosen languages_provided last_modified malformed_request? moved_permanently? moved_temporarily? multiple_choices? options post_is_create? previously_existed? process_post resource_exists? service_available? uri_too_long? valid_content_headers? valid_entity_length? validate_content_checksum variances Callbacks 18 Wednesday, 14 November 12

  19. Hypermedia APIs 19 Webmachine::Application.new do |app| app.routes do add [],

    HomeResource end end 19 Wednesday, 14 November 12

  20. Hypermedia APIs Representation 20 20 Wednesday, 14 November 12

  21. Hypermedia APIs HTML 21 21 Wednesday, 14 November 12

  22. Hypermedia APIs 22 <!DOCTYPE html> <html lang=”en”> <body> <a href=”...”

    rel=”../vehicles”>Vehicles</a> </body> </html> Example HTML Representation 22 Wednesday, 14 November 12

  23. Hypermedia APIs 23 class HomeResource < Webmachine::Resource … def content_types_provided

    [[‘text/html’, :to_html]] end def to_html template = Slim::Template.new(“home_representer.slim”) template.render end end 23 Wednesday, 14 November 12

  24. Hypermedia APIs HAL+JSON 24 24 Wednesday, 14 November 12

  25. Hypermedia APIs 25 { “_links”: { “self”: { “href”: “.../api”

    }, “vehicles”: { “href”: “.../vehicles” } } } Example HAL+JSON Representation 25 Wednesday, 14 November 12

  26. Hypermedia APIs ROAR 26 26 Wednesday, 14 November 12

  27. Hypermedia APIs 27 module HomeRepresenter include Roar::Representer::JSON include Roar::Representer::JSON::HAL include

    Roar::Representer::Feature::Hypermedia link :self do "/api" end link :vehicles do ".../vehicles" end end 27 Wednesday, 14 November 12

  28. Hypermedia APIs 28 class HomeResource < Webmachine::Resource … def content_types_provided

    [[‘application/hal+json’, :to_hal]] end def to_hal home = Object.new.extend(HomeRepresenter) home.to_json end end 28 Wednesday, 14 November 12

  29. Hypermedia APIs Next Steps 29 29 Wednesday, 14 November 12

  30. Hypermedia APIs Conclusion 30 30 Wednesday, 14 November 12

  31. Hypermedia APIs Questions? 31 31 Wednesday, 14 November 12

  32. Hypermedia APIs Additional Resources 32 seancribbs/webmachine-ruby apotonick/roar Jon Moore’s 2010

    Oredev talk Steve Klabnik: “Designing Hypermedia APIs” Mike Amundsen: “Building Hypermedia APIs” Webber/Robinson: “REST in Practice” RESTFest 32 Wednesday, 14 November 12