kitak

How Unicorn Reaps Worker Processes

RubyによるUnixプログラミングを掘り下げるなら、Unicorn web サーバーについても触れておく必要がある。既にこの本でも何度かUnicornについて言及をしてきた。

Unicornの何が凄いのか？Unicornはkernelの機能を限界まで使いこなしている。
コードベースはUnixプログラミングテクニックで一杯だ。

それだけではなく、効率的で信頼性も備えている。GithubやShopifyといったRubyで構築されているWebサイトの多くがUnicornを使っている。

RubyによるUnixプログラミングについてもっと興味がわいならUnicornの詳細を調べてみるといい。

kitak

コミットするまでの流れ

前回のコミットから何も変更を加えていない状態。

$ git status
# On branch masternothing to commit, working directory clean

エディタでファイルを編集する

kitak

var freshers = ["おっくん", "ぐっさん", "たけお", "きたけー"];

freshers.shuffle = function () {
  var i = this.length;
  var j = 0;
  var tmp = "";
  while(i) {
    j = Math.floor(Math.random()*i);
    i--;
    tmp = this[i];

kitak

require 'mechanize'

class IshikawaAirPollutionAPI

  def initialize
    @agent = Mechanize.new
    @agent.user_agent_alias = 'Mac Safari'
    @agent.request_headers = {
      'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
      'Accept-language' => 'ja-jp',

kitak

var LINE = require('./line.js');

var line     = new LINE();
var email    = 'your email';
var password = 'your password';

line.login(email, password, function(error, result) {
    if (error) {
        return;
    }

kitak

connection = Faraday::Connection.new('http://example.com') do |builder|
  builder.request :url_encoded  # for POST/PUT params
  builder.adapter :net_http
end

# same as above, short form:
connection = Faraday.new 'http://example.com'

# GET
connection.get '/posts'

kitak

//Customise Backbone.sync to work with Titanium rather than jQuery
var getUrl = function(object) {
  if (!(object && object.url)) return null;
  return _.isFunction(object.url) ? object.url() : object.url;
};

Backbone.sync = (function() {    
    var methodMap = {
        'create': 'POST',
        'read'  : 'GET',

kitak

/**
 * Enable route to __noSuchMethod__ when unknown method calling. 
 *
 * @param {Object} obj Target object.
 * @return {Object} 
 */
function enableMethodMissing(obj) {

  var functionHandler = createBaseHandler({});
  functionHandler.get = function(receiver, name) {

kitak

Testing front-end for a Sinatra app with RSpec and Capybara

I've used Cucumber quite a bit on my last job. It's an excellent tool, and I believe readable tests are the way to the future. But I could never get around to write effective scenarios, or maintain the boatload of text that the suite becomes once you get to a point where you have decent coverage. On top of that, it didn't seem to take much for the suite to become really slow as tests were added.

A while ago I've seen a gist by Lachie Cox where he shows how to use RSpec and Capybara to do front-end tests. That sounded perfect for me. I love RSpec, I can write my own matchers when I need them with little code, and it reads damn nicely.

So for my Rails Rumble 2010 project, as usual, I rolled a Sinatra app and figured I should give the idea a shot. Below are my findings.

Gemfile

kitak

//
// Base
//

// this sets the background color of the master UIView (when there are no windows/tab groups on it)
Titanium.UI.setBackgroundColor('#000');

// create tab group
var tabGroup = Titanium.UI.createTabGroup();