Upgrade to PRO for Only $50/Year—Limited-Time Offer! 🔥

Introduction to Webmachine

Avatar for Jade Allen Jade Allen
October 16, 2013
Technology
0
120

Introduction to Webmachine

Webmachine is a toolkit to build REST APIs implemented in Erlang.

Avatar for Jade Allen

Jade Allen

October 16, 2013
Tweet

More Decks by Jade Allen

See All by Jade Allen
All About Regular Expressions
Avatar for Jade Allen jadeallenx
1
270
Hexes, Charms and Spells
Avatar for Jade Allen jadeallenx
0
160
3 > 2
Avatar for Jade Allen jadeallenx
0
1.1k
Idiomatic Erlang
Avatar for Jade Allen jadeallenx
0
170
The Sharp Edges of Leaky Abstractions
Avatar for Jade Allen jadeallenx
0
110
Sagas: Distributed Transactions Without Locks
Avatar for Jade Allen jadeallenx
0
580
Before Unix: Early History of Time-Sharing
Avatar for Jade Allen jadeallenx
0
230
Functional Programming Made Me a Better Perl Developer
Avatar for Jade Allen jadeallenx
1
360
Assigning Meanings to Programs
Avatar for Jade Allen jadeallenx
0
250

Other Decks in Technology

See All in Technology
Oracle Database@AWS：サービス概要のご紹介
Avatar for oracle4engineer oracle4engineer
PRO
1
390
【開発を止めるな】機能追加と並行して進めるアーキテクチャ改善/Keep Shipping: Architecture Improvements Without Pausing Dev
Avatar for 株式会社ビットキー / Bitkey Inc. bitkey
PRO
1
120
[2025-12-12]あの日僕が見た胡蝶の夢 〜人の夢は終わらねェ AIによるパフォーマンスチューニングのすゝめ〜
Avatar for tosite tosite
0
140
AI駆動開発の実践とその未来
Avatar for Ikko Eltociear Ashimine eltociear
1
480
MariaDB Connector/C のcaching_sha2_passwordプラグインの仕様について
Avatar for kubo ayumu boro1234
0
1k
1人1サービス開発しているチームでのClaudeCodeの使い方
Avatar for おーしろ noayaoshiro
2
570
シニアソフトウェアエンジニアになるためには
Avatar for KNOWLEDGE WORK / 株式会社ナレッジワーク kworkdev
PRO
3
260
AgentCoreとStrandsで社内d払いナレッジボットを作った話
Avatar for 元島優 motojimayu
1
750
20251203_AIxIoTビジネス共創ラボ_第4回勉強会_BP山崎.pdf
Avatar for AIxIoTビジネス共創ラボ iotcomjpadmin
0
130
Entity Framework Core におけるIN句クエリ最適化について
Avatar for tkym htkym
0
110
AIBuildersDay_track_A_iidaxs
Avatar for iidaxs iidaxs
4
1.1k
Fashion×AI「似合う」を届けるためのWEARのAI戦略
Avatar for ZOZO Developers zozotech
PRO
2
1.1k

Featured

See All Featured
Rails Girls Zürich Keynote
Avatar for Gregor Martynus gr2m
95
14k
CSS Pre-Processors: Stylus, Less & Sass
Avatar for Bermon Painter bermonpainter
359
30k
JAMstack: Web Apps at Ludicrous Speed - All Things Open 2022
Avatar for David Neal reverentgeek
1
290
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
Avatar for Sam Stephenson sstephenson
162
16k
The Illustrated Guide to Node.js - THAT Conference 2024
Avatar for David Neal reverentgeek
0
210
Max Prin - Stacking Signals: How International SEO Comes Together (And Falls Apart)
Avatar for Tech SEO Connect techseoconnect
PRO
0
48
Ecommerce SEO: The Keys for Success Now & Beyond - #SERPConf2024
Avatar for Aleyda Solis aleyda
1
1.7k
Measuring & Analyzing Core Web Vitals
Avatar for Philip Tellis bluesmoon
9
710
Learning to Love Humans: Emotional Interface Design
Avatar for Aarron Walter aarron
274
41k
Mozcon NYC 2025: Stop Losing SEO Traffic
Avatar for Sam Torres samtorres
0
84
The Curse of the Amulet
Avatar for Matthew Lei leimatthew05
0
4.6k
Digital Ethics as a Driver of Design Innovation
Avatar for Per Axbom axbom
PRO
0
130

Transcript

  1. Introduction to Webmachine! ! ! Mark Allen! [email protected]! @bytemeorg! http://byte-me.org!

    https://github.com/mrallen1!

  2. HTTP is complicated!

  3. None

  4. Abstraction!

  5. Toolkit!

  6. A gentle introduction! to Erlang!

  7. Sincerely flattered!

  8. dj-webmachine! (python)!

  9. webmachine.rb! (ruby)!

  10. webmachine.js! (node)!

  11. liberator! (clojure)!

  12. scalamachine! (scala)!

  13. Framework!

  14. Framework!

  15. None

  16. Hello World! Resource!

  17. -module(hello_world_resource). -export([init/1, to_html/2]). -include_lib("webmachine/include/webmachine.hrl"). init([]) -> {ok, "Hello, world"}. to_html(Req,

    State) -> {io_lib:format("<html><head><title>~s</title></ head><body>~s</body></html>", [State, State]), Req, State}.

  18. -module(hello_world_resource). -export([init/1, to_html/2]). -include_lib("webmachine/include/webmachine.hrl"). init([]) -> {ok, "Hello, world"}. to_html(Req,

    State) -> {io_lib:format("<html><head><title>~s</title></ head><body>~s</body></html>", [State, State]), Req, State}.

  19. -module(hello_world_resource). -export([init/1, to_html/2]). -include_lib("webmachine/include/webmachine.hrl"). init([]) -> {ok, "Hello, world"}. to_html(Req,

    State) -> {io_lib:format("<html><head><title>~s</title></ head><body>~s</body></html>", [State, State]), Req, State}.

  20. Conditional GET!

  21. -module(hello_world_resource). -export([init/1, to_html/2, generate_etag/2]). -include_lib("webmachine/include/webmachine.hrl"). init([]) -> {ok, "Hello, world"}.

    to_html(Req, State) -> {io_lib:format("<html><head><title>~s</title></ head><body>~s</body></html>", [State, State]), Req, State}. generate_etag(Req, State) -> {mochihex:to_hex(crypto:md5(State)), Req, State}.

  22. Encoding Support!

  23. -module(hello_world_resource). -export([init/1, to_html/2, generate_etag/2]). -export([encodings_provided/2]). -include_lib("webmachine/include/webmachine.hrl"). init([]) -> {ok, "Hello,

    world"}. to_html(Req, State) -> {io_lib:format("<html><head><title>~s</title></ head><body>~s</body></html>", [State, State]), Req, State}. generate_etag(Req, State) -> {mochihex:to_hex(crypto:md5(State)), Req, State}. encodings_provided(Req, State) -> {[{"gzip", fun(X) -> zlib:gzip(X) end}], Req, State}.
  24. None

  25. Content Negotiation!

  26. -module(hello_world_resource). -export([init/1, to_html/2, to_json/2, generate_etag/2]). -export([encodings_provided/2, content_types_provided/2]). -include_lib("webmachine/include/webmachine.hrl"). init([]) ->

    {ok, "Hello, world"}. content_types_provided(Req, State) -> {[{"text/html", to_html}, {"application/json", to_json}], Req, State}. to_json(Req, State) -> {mochijson2:encode({struct, [{greeting, list_to_binary(State)}]}), Req, State}. to_html(Req, State) -> {io_lib:format("<html><head><title>~s</title></ head><body>~s</body></html>", [State, State]), Req, State}. %% ...
  27. None

  28. Resource! Implementation! Pattern!

  29. f(Req, State) -> {RetVal, Req, State}.

  30. Manipulating! Requests or Responses!

  31. wrq:get_req_header(HeaderName, Req) -> 'undefined' | HeaderValue

  32. wrq:set_resp_header( HeaderName, HeaderValue, Req) -> NewReq.

  33. to_json(Req, State) -> {mochijson2:encode({struct, [{greeting, list_to_binary(State)}]} ), wrq:set_resp_header( "Content-Type", "application/json",

    Req), State}.
  34. None

  35. Visual Debugging!

  36. None

  37. curl -v -Haccept:application/xml 127.0.0.1:8000

  38. Basic URL Dispatch!

  39. {["a"], some_resource, []}

  40. {["a"], some_resource, []}

  41. {["a"], some_resource, []}

  42. Fancy URL Dispatch!

  43. % The atom '*' is a wildcard {["a", '*'], some_resource,

    []} % matches /a/b/c or /a/b/c/d

  44. % bind 2nd element to 'foo' {["a", foo], some_resource, []}

    % retrieve with % wrq:path_info(foo, Req) % URL of /a/b returns "b"

  45. % bind 2nd element to 'foo' {["a", foo], some_resource, []}

    % /a/b/c/d => 404 Not Found

  46. % dispatch /a/b/c/d {["a", foo, '*'], some_resource, []}

  47. Handling POST!

  48. •  allowed_methods/2 •  post_is_create/2 •  create_path/2 •  content_types_accepted/2 •  handler

    functions!

  49. Other cool stuff:! •  Streaming requests/ responses! •  File uploads!

  50. Resources:! •  https://github.com/basho/webmachine! •  https://github.com/mrallen1/wm_hello! •  https://speakerdeck.com/mrallen1/ intro_to_webmachine!

  51. Thank you!! ! Questions?!