Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
ちょっとわかるrack
Search
Leonard Chin
May 24, 2012
Programming
10
1.2k
ちょっとわかるrack
初心者向けrackの簡単な紹介
・rackとは何か
・rackアプリの作り方
・rack middlewareの作り方・使い方
※2012/5/14の会社内LTで使用した資料
Leonard Chin
May 24, 2012
Tweet
Share
More Decks by Leonard Chin
See All by Leonard Chin
生鮮ECのタイムセールを 耐え抜いてきた話 / Handling high traffic sale days at Cookpad Mart
lchin
3
12k
Performance as a Product Feature
lchin
5
1.8k
Database Performance for Ruby on Rails Applications
lchin
7
1.2k
Database Performance for Rails Applications
lchin
5
640
How to Survive and thrive as an engineer in a foreign land
lchin
4
1.1k
#eachを使ったら負け
lchin
7
1.5k
Other Decks in Programming
See All in Programming
20240706_CDKConf
takuyay0ne
0
1.2k
[After Kotlin Fest 2024 LT Night @ Sansan] もっともっとKotlinを好きになる!K2 Compiler Pluginで遊んでみよう!
kitakkun
2
260
CSC307 Lecture 14
javiergs
PRO
0
220
大規模マルチテナントを解決するYugabyteDBという選択肢
nnaka2992
1
250
Jetpack for KMP
fornewid
1
290
CSC307 Lecture 07
javiergs
PRO
0
220
CSC307 Lecture 05
javiergs
PRO
0
210
社内 LT 会を発足し、アウトプット文化を醸成させるために考えたこと・やったこと / Starting internal LT meetings and fostering an output culture
mackey0225
3
120
DMMプラットフォームにおけるTiDBの導入から運用まで
pospome
7
3k
入社1ヶ月でここまでやった!Findy Toolsインフラ支援の最適化
rvirus0817
6
1.4k
I/O Extended Android in Korea 2024 ~ Whats new in Android development tools
pluu
0
250
TiDB Serverless ~理想のServerless DBを考える~
soso_15315
1
160
Featured
See All Featured
No one is an island. Learnings from fostering a developers community.
thoeni
17
2.8k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
26
1.8k
Building Better People: How to give real-time feedback that sticks.
wjessup
357
18k
Building Adaptive Systems
keathley
34
2k
Teambox: Starting and Learning
jrom
130
8.6k
Put a Button on it: Removing Barriers to Going Fast.
kastner
58
3.3k
Stop Working from a Prison Cell
hatefulcrawdad
266
20k
5 minutes of I Can Smell Your CMS
philhawksworth
200
19k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
662
120k
A Modern Web Designer's Workflow
chriscoyier
689
190k
Designing on Purpose - Digital PM Summit 2013
jponch
113
6.6k
Into the Great Unknown - MozCon
thekraken
20
1.3k
Transcript
ͪΐͬͱΘ͔Δ
Web Server App Server IUUQ DBMMSVCZ DBMMBQQ Your App
Web Server App Server IUUQ DBMMSVCZ DBMMBQQ Your App BQBDIFOHJOYFUD
QBTTFOHFSNPOHSFMUIJOFUD
Web Server App Server IUUQ DBMMSVCZ DBMMBQQ Your App BQBDIFOHJOYFUD
QBTTFOHFSNPOHSFMUIJOFUD ͜ͷ*'ɺͲ͏͢Δʁ
Web Server App Server IUUQ DBMMSVCZ DBMMBQQ Your App BQBDIFOHJOYFUD
QBTTFOHFSNPOHSFMUIJOFUD ڞ௨*'3BDL 3BDL"QQMJDBUJPO
call(env)
def call(env) ... end 3FRVFTUΛ͞ΕΔ 3FTQPOTFΛฦ͢ [status, headers, response_body]
ৄࡉ41&$Ͱ http://rack.rubyforge.org/doc/SPEC.html
4JOBUSBͷ߹
# Rack call interface. def call(env) dup.call!(env) end attr_accessor :env,
:request, :response, :params def call!(env) # :nodoc: @env = env @request = Request.new(env) @response = Response.new @params = indifferent_params(@request.params) template_cache.clear if settings.reload_templates force_encoding(@params) @response['Content-Type'] = nil invoke { dispatch! } invoke { error_block!(response.status) } unless @response['Content-Type'] if Array === body and body[0].respond_to? :content_type content_type body[0].content_type else content_type :html end end @response.finish end
SBDLVQ
rackup config.ru ΞϓϦͷೖΓޱΛఆٛ Rack::Builder.new { <config.ru> }.to_app ʹ͢
#config.ru require ‘rack’ require ‘myapp’ run MyApp.new 3BDL"QQMJDBUJPO JFJNQMFNFOUTcall(env)
# Minimum config.ru require ‘rack’ run lambda { |env| [200,
{ "Content-Type" => "text/plain" }, ["OK"] ] } TUBUVT IFBEFST CPEZ
3BDL.JEEMFXBSF
Web Server App Server IUUQ DBMMSVCZ Your App BQBDIFOHJOYFUD QBTTFOHFSNPOHSFMUIJOFUD
3BDL*' 3BDL"QQMJDBUJPO Middleware Middleware 3BDL*' 3BDL*' .JEEMFXBSFΛૠೖ ^
w $43' w 3FEJSFDUJPO w -PHHJOH w 4FTTJPO.BOBHFNFOU w "VUIFOUJDBUJPO
w &NCFE(PPHMF"OBMZUJDT FUD
class Middleware def initialize(app) @app = app end def call(env)
# do something response = @app.call(env) # do something end end ࣍ʹݺͿ"QQ.JEEMFXBSF 3FRVFTUΛ͍͡Δ 3FTQPOTFΛ͍͡Δ
&YBNQMFSBDL@DTSG
def call(env) unless env['rack.session'] raise SessionUnavailable.new('Rack::Csrf depends on session middleware')
end self.class.token(env) req = Rack::Request.new(env) untouchable = skip_checking(req) || !@http_methods.include?(req.request_method) || req.params[self.class.field] == env['rack.session'][self.class.key] || req.env[self.class.rackified_header] == env['rack.session'][self.class.key] if untouchable @app.call(env) else raise InvalidCsrfToken if @raisable [403, {'Content-Type' => 'text/html', 'Content-Length' => '0'}, []] end end $43'νΣοΫࣦഊͨ͠Βɺ ͙͢ʹ3FTQPOTFฦ͢ 3FRVFTUʹ$43'ରࡦUPLFOΛνΣοΫ ௨ͬͨΒɺͦͷ··࣍
6TJOH.JEEMFXBSF
#config.ru require ‘rack’ require ‘myapp’ class Middleware def initialize(app) @app
= app end def call(env) env["rack.some_header"] = "setting an example" @app.call(env) end end use Middleware run MyApp.new 3BDL෦Ͱ!VTFྻʹૠೖ 3BDL#VJMEFSʹCJOE͞ΕͯΔ