在 [RubyConf.TW 2011][]，我介紹了 [rest-core][]，是用 Ruby 寫成的模組化 REST client 組合包與工具組。後來組合包的東西被抽至 [rest-more][]，於是變成給 REST APIs 使用的模組化 Ruby clients interface。
在 [RubyConf.TW 2012][]，我介紹了 Ruby 上的 concurrent 應用程式伺服器。之後在 rest-core 內，加入我從以上所學到的東西，使它能輕易地發出 concurrent requests。
在不同的使用情況下，我們有時候需要使用 promise、有時候需要使用 callback。這次我將介紹該怎麼利用 promise 來達成以我們所熟習的同步風格，發出
| module SkipVerification | |
| def verify_mode | |
| OpenSSL::SSL::VERIFY_NONE | |
| end | |
| end | |
| HTTPClient::SSLConfig.prepend(SkipVerification) |
| task :test do | |
| sh 'ruby another.rb' # at_exit in another.rb didn't run or $stdout is broken or redirected? | |
| # actuall: sh 'cd api; ruby -S rake test' | |
| end |
| #!/bin/sh | |
| echo RAILS_ENV={development,test} | xargs -n1 -P2 rake db:migrate | |
| echo 'rake db:structure:dump,rake db:schema:dump' | xargs -d, -n1 -P2 sh -c | |
| cp db/structure.sql db/schema.sql |
| "Lin Jen Shin (godfat) is a programmer who loves computer games, open source, Haskell and self-referential jokes, such as: %p=~/(.+)/;puts(($1%%$1)[/: (.+)/,1])"=~/(.+)/;puts(($1%$1)[/: (.+)/,1]) |
| x-smtpapi: {"filters":{"templates":{"settings":{"enable":1,"template_id":"template-1"}}}, | |
| "section":{":name":"Alice",":message":"this is Bob."}} | |
| html: <%template-2%> |
| class MigrateCookie < Struct.new(:app) | |
| def call env | |
| cookies = Rack::Utils.parse_query(env['HTTP_COOKIE'], ';,') | |
| case cookies['_session_id'] | |
| when Array | |
| status, headers, body = app.call(env) | |
| headers['Set-Cookie'] = | |
| "#{headers['Set-Cookie']}\n#{expire_old_session}" | |
| [status, headers, body] | |
| else |
| WITH RECURSIVE results(id, i, picked, roll) AS ( | |
| WITH bounds AS (SELECT min(id), max(id) - min(id) AS delta FROM table) | |
| ( | |
| SELECT NULL::integer | |
| , 0 | |
| , ARRAY[]::integer[] | |
| , min + round(delta * random()) | |
| FROM bounds | |
| ) | |
| UNION ALL |
| class User < Struct.new(:enable_email, :email) | |
| extend Validator | |
| validate :email, v.present(:enable_email) & v.match(:email, /[^@]+@[^@]+/) | |
| end | |
| User.new(true, 'a@b').check |
| net/http: | |
| https://github.com/jnunemaker/httparty | |
| https://github.com/rest-client/rest-client | |
| https://github.com/lostisland/faraday | |
| https://github.com/drbrain/net-http-persistent | |
| ruby: | |
| https://github.com/excon/excon | |
| https://github.com/httprb/http | |
| https://github.com/nahi/httpclient |