johnnypez

git panic-moonwalk

When you need to get yourself out of an uncomfortable situation...

[alias]
  panic-moonwalk = reset --hard
 # back away!

johnnypez

Launch an instance storage backed ec2 instance with the default ECS Optimized AMI (c3.* or m3.* family) Map /dev/xvdcz to ephemeral0

SSH into it

# stop docker processes
docker ps -q | xargs docker stop

# stop docker

johnnypez

For several weeks our production deployment (Express, Bookshelf/Knex -> MySQL) was randomly having queries fail resulting in 500 errors and server crashes.

The first issue is that the Knex library was using Pool2 slightly incorrectly, and when a ETIMEDOUT error occurred, it tried to release the pooled connection twice. This would create an exception which would crash express (unless you have a top level error handler defined in your express setup)

In this issue (myndzi/pool2#12 (comment)) filed on pool2 by the author of knex (tgriesser) the author of pool2 (myndzi) points out the error handling issue and created a fork of knex with the fix git+https://github.com/myndzi/knex#double-release

After installing the fix on my server, whenever ETIMEDOUT occured an error would be generated in the expected part of the code so that I could decide to retry the query or fail gracefully. Removing the ETIMEDOUT entirely would be

johnnypez

define (require) ->
  FooStore = require './foo_store'
  ListeningMixin = require './listening_mixin'
  
  _getStateFromStores = ->
    ver: FooStore.ver()
    foo: FooStore.foo()
    
  React.createClass
    mixins: [ListeningMixin]

johnnypez

{
  "scope": "source.coffee",

  "completions":
  [
    { "trigger": "propTypes", "contents": "propTypes: {}" },
    { "trigger": "mixins", "contents": "mixins: [$1]" },
    { "trigger": "statics", "contents": "statics: {}" },
    { "trigger": "displayName", "contents": "displayName: '$1'" },
    { "trigger": "getInitialState", "contents": "getInitialState: ->" },

johnnypez

#!/usr/bin/env ruby

require 'open-uri'
require 'rexml/document'
feed = open("http://devopsreactions.tumblr.com/api/read?num=50").read
doc = REXML::Document.new feed
posts = []
REXML::XPath.each doc, '//post' do |node|
  posts << node.attributes["url"]
end

johnnypez

#! /usr/bin/env ruby
require 'yaml'
data = YAML.load(DATA)
adjective = data["adjectives"].sample
animal = data["animals"].select {|a| a.match(/^#{adjective[0]}/)}.sample
puts "#{adjective} #{animal}"
__END__
---
adjectives:
  - adorable

johnnypez

#!/usr/bin/env ruby

require 'yaml'
require 'active_support'

RAILS_ROOT = File.expand_path(File.dirname(__FILE__) + '/../')
files = Dir.glob("#{RAILS_ROOT}/config/locales/*.yml")
locales = files.map{|f| File.basename(f, '.yml')}

def flat_hash(hash, k = nil)

johnnypez

# rails:attachBindings

fired when jquery-rails starts attaching bindings to links, forms etc.

# confirm

gives you the opprotunity to skip a confirm dialog by returning a falsy value

# confirm:complete

johnnypez

function parse_git_branch() {
    git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1) /'
    
}

function get_git_color() {

    isred=`git status -s 2> /dev/null | egrep "^.[^? ]" | wc | awk '{print $1}'`
    isorange=`git status -s 2> /dev/null | egrep "^[^? ]" | wc | awk '{print $1}'`