ang3lkar

Adding an audit log to your Rails app

If you have any sort of administrative interface on your web site, you can easily imagine an intruder gaining access and mucking about. How do you know the extent of the damage? Adding an audit log to your app is one quick solution. An audit log should record a few things:

• controller entry points with parameter values
• permanent information about the user, like user_id
• transient information about the user, like IP and user_agent

Using the Rails framework, this is as simple as adding a before_action to your admin controllers. Here’s a basic version that I’m using in production.

ang3lkar

require 'test_helper'
require 'rails/performance_test_help'
require_relative 'support/backend_test_helper'

class BackendTest < ActionDispatch::PerformanceTest
  include BackendTestHelper

  attr_reader :eddard, :jaime

  setup do

ang3lkar

djs.each do |dj|
    begin
      dj.invoke_job
      # h = YAML.load(dj.handler)
      # puts "Processed dj #{dj.id}"
      dj.destroy
      ''
    rescue => e
      # ha = YAML.load(dj.handler)
      puts "dj_id: #{dj.id}"

ang3lkar

# app/middleware/subdomain_enforcer.rb
class SubdomainEnforcer
  def initialize(app)
    @app = app
  end

  def call(env)
    @request = Rack::Request.new(env)

    if @request.params['sbd'].present?

ang3lkar

$(function ($) {
  $.extend({
    form: function (url, data, method) {
      if (method == null) method = 'POST';
      if (data == null) data = {};

      var form = $('<form>').attr({
        method: method,
        action: url,
      }).css({

ang3lkar

if Rails.env.development?
  require 'active_record/connection_adapters/postgresql_adapter'

  class ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
    def __explain_analyze(sql, command, *args)
      meth = "#{command}_without_explain_analyze".to_sym
      if /\A\s*SELECT/i.match(sql)
        newsql = "EXPLAIN ANALYZE #{sql}"
        plan = send(meth, newsql, *args).map { |row| row['QUERY PLAN'] }.join("\n")
        Rails.logger.debug("\e[1m\e[31mQUERY PLAN FOR: #{sql.strip};\n#{plan}\e[0m")

ang3lkar

namespace :benchmarks do
  desc 'With cache'
  task cache: :environment do
    class RakeActionView < ActionView::Base
      include Rails.application.routes.url_helpers
      include ::ApplicationHelper

      def default_url_options
        { host: 'localhost:3000' }
      end

ang3lkar

# Find a pair of elements from an array whose sum equals a given number
#
# * The array contains only integers
# * The array can have duplicates
# * Return a boolean that indicates if the list has such a pair
# * We will start with an ordered (ascending order) list example

require 'benchmark/ips'
require 'set'

ang3lkar

export YELLOW="\033[0;33m"
export NC="\033[0m" # No Color

# Until I figure out how to set the branch via argument, I have to edit this line
export SOURCE_DIR=~/projects/workable
export TARGET_DIR=~/projects/docker/workable

export BRANCH=research/docker

export DOCKER_TAG=latest

ang3lkar

#!/usr/bin/env ruby

begin
  env = File.read(File.expand_path('~/projects/workable/.env'))
  env_sample = File.read(File.expand_path('~/projects/workable/.env_sample'))

  env_keys = env
             .split("\n")
             .reject { |e| e.start_with?('#') }
             .map { |e| e.split('=')[0] }