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Logging Rails 4 to Syslog, formatted w/ Logstash

Getting Started

Steps to get Rails 4 saving its output to Syslog via Rsyslog. This assumes you are on CentOS, but should be pretty adaptable to any other distribution. Ruby 2.0+ is also required.

Add the gems lograge and logstash-event to your Gemfile. Feel free to remove from production if you'd like to test it in development as well or something.
Update production.rb with the lograge settings and set the logger to Syslog::Logger.
Add the conf files to /etc/rsyslog.d/. /etc/rsyslog.conf should have $IncludeConfig /etc/rsyslog.d/*.conf enabled, so it will load any additional configs from /etc/rsyslog.conf.

Navigating

visit("/projects")
visit(post_comments_path(post))

Clicking links and buttons

Откат ошибочной команды `git push --force`

Иногда при работе с несколькими удалёнными репозиториями в git, может произойти страшное: git push --force в не тот remote и/или не в ту ветку.

Такое может случиться, например, если вы используете [Deis], в котором деплой запускается при git push нужного коммита в сборщик, когда при отладке деплоя после очередного git commit --amend по запарке вместо git push deis master --force делается просто git push --force. Упс.

Как результат, последние коммиты коллег безвозвратно потеряны, и вы чувствуете неотвратимость их ярости…

Но это git, а значит всё можно починить!

These are the steps I took to change a modest project from CoffeeScript to ES6.

My ~2000LoC project took me around 6 hours to port, but I sunk 3 hours into a stupid mistake, and 2 into figuring out these steps, so with these steps & warnings at your disposal already, you should be able to do bigger projects in considerably less time.

Automatic tools only take you so far, there will be some manual fixing. Sometimes the generated code clearly doesn't look like a human wrote it, and sometimes there are bugs.

In this last case, when porting software trips over a particular bit of CoffeeScript, comment this bit out, and try transpiling the file again. If this is successfull, you'll see the commented CoffeeScript inside the JS, and you can port that bit yourself.

Okay let's dive right in!

	# Build an inverted index for a full-text search engine with Redis.
	# Copyright (C) 2009 Salvatore Sanfilippo. Under the BSD License.
	# USAGE:
	#
	# ruby invertedindex.rb add somedir/*.c
	# ruby invertedindex.rb add somedir/*.txt
	# ruby search your query string

	require 'rubygems'
	require 'redis'

	# spec/support/feature_macros.rb

	module FeatureMacros
	extend ActiveSupport::Concern

	# get current domain ("lvh.me:12345")
	def domain(port = Capybara.current_session.server.try(:port) \|\| 3000)
	port &&= ":#{ port }"
	"#{ DEFAULT_HOST }#{ port }"
	end

	# A sample Gemfile
	source "http://rubygems.org"

	gem "redis"
	gem 'eventmachine', :git => 'git://github.com/eventmachine/eventmachine.git'
	gem "em-hiredis"
	# gem "em-synchrony"
	gem "em-websocket"

	class Game
	include Celluloid
	include Celluloid::IO
	include Celluloid::Internals::Logger
	include Celluloid::Notifications
	extend Forwardable
	finalizer :finalizer
	def_delegators :int_state, :stage, :step, :total_steps, :step_status, :statements, :setting

	attr_accessor :name, :online

	module FactoryGirl
	module Doctor
	module FloatDuration
	refine Float do
	def duration
	t = self
	format("%02d:%02d.%03d", t / 60, t % 60, t.modulo(1) * 1000)
	end
	end
	end