ewoodh2o

Loading Metrics from a Database

Given the following database schema:

| page_metrics                                         |
+------------------------------------------------------+
| id | page_id | date       | fans | comments | clicks |
+----+---------+------------+------+----------+--------+
| 11 |     123 | 2012-08-01 | 1750 |       23 |    103 |

ewoodh2o

Bash-Style Curly Brace Expansion

Expands the curly-brace notation as supported by Bash.

expand "ab{c,d}e"
  => [ "abce", "abde" ]

expand "ab{c,d}e{1,2}"
 => [ "abce1", "abce2", "abde1", "abde2" ]

ewoodh2o

Design Goals

1. Scribe has a single listener, with multiple clients sending it data (multiple Tabs unicorns, etc)
2. If Scribe goes down temporarily, messages should queue on the client and be delivered when it comes back.
3. If Scribe is down for a long time, the client should throw away messages rather than exhausting its RAM.
4. If Scribe is down and the client terminates, it shouldn't wait around forever trying to deliver messages.

In the code below, pub.rb goes in the Scribe client gem and gets installed in Tabs, etc, with a similar thing in Deejay. The sub.rb piece is part of Scribe.

ewoodh2o

require 'rubygems'
require 'zmq'

context = ZMQ::Context.new

# Start listening
pull = context.socket(ZMQ::PULL)
pull.bind("tcp://127.0.0.1:5555")

# Get updates, exit on ^C

ewoodh2o

source 'http://rubygems.org'

gem 'rails', '3.0.10'

# ... include whatever you need, but the following is pertinent
gem 'fb_graph'

ewoodh2o

# Solves Stanford's SAAS anagram question
# http://spark-university.s3.amazonaws.com/berkeley-saas/homework/hw1.pdf
# Question 3

def combine_anagrams(words)

  # Set up a hash to hold the groups:
  #   Keys will be the sorted anagram string
  #   Values will be the array of anagrams for that string
  # Hash works well here because it's a fast lookup on

ewoodh2o

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; emacs configuration
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(nconc load-path (list "~/.emacs.d/el-get/el-get"))

(require 'package)
(setq exec-path (cons "/usr/local/git/bin/" exec-path))

(unless (require 'el-get nil t)
  (with-current-buffer

ewoodh2o

module ChronicleClient
  class FirstMock < ChronicleClient::Mock
    def self.response_for(query)
      return nil if query.client != '0'
      
      if query.params[:tags].include?("page_active_users")
        return ChronicleClient::Response.mock(
          :highcharts_array => [[1307592000000, 10000000], [1307678400000, 10014000], [1307764800000, 10027000], [1307851200000, 10035000], [1307937600000, 10059000], [1308024000000, 10078000], [1308110400000, 10087000]]
        )
      end

ewoodh2o

def upload_sizing
  result = {}
  
  if uploads_enabled?
    dims = lambda {|size| send("upload#{size}_width?") && send("upload#{size}_width?") ?
      { width: send("upload#{size}_width"), height: send("upload#{size}_width") } : nil
    }
    
    {:enable_images? => :resize, :enable_videos? => :encode}.each do |method, result_key|
      ['', '_thumb'].each do |size|

ewoodh2o

SIZING_METHODS = {:enable_images? => :resize, :enable_videos? => :encode}

def size_upload
  result = {:export => {use: []}}
  
  return result unless self.uploads_enabled?
  
  ['', '_thumb'].each do |insert|
    w = "upload#{insert}_width".to_sym
    w? = "#{w}?".to_sym