Eric London EricLondon

EricLondon / gist:72952b77499badad4e29

Last active August 29, 2015 14:06

Rails Model Concern: track which classes have included the Concern

	require 'active_support/concern'

	module ChildTrackable
	extend ActiveSupport::Concern

	# keep track of what classes have included this concern:
	module Children
	extend self
	@included_in \|\|= []

EricLondon / gist:df145895d5a3bacd2f7e

Last active August 29, 2015 14:23

IMS nginx & passenger

	# I had nginx and passenger already installed via brew:
	# note: this caused problems with RVM & gemsets
	brew uninstall nginx passenger
	brew cleanup

	##########

	# from the IMS rails project:
	# note/todo: add to Gemfile?
	gem install passenger -v 5.0.10

EricLondon / gist:f5e4722c15d1e9d6a7d1

Created July 9, 2015 12:51

nodejs spawn shell process (ps aux) and filter

	var run_cmd = function(cmd, args, callBack) {
	var spawn = require('child_process').spawn;
	var child = spawn(cmd, args);
	var resp = "";

	child.stdout.on('data', function (buffer) { resp += buffer.toString() });
	child.stdout.on('end', function() { callBack (resp) });
	}

	var check_ps_aux = function(service) {

EricLondon / gist:a3f1297cf8bc63673c79

Created July 14, 2015 20:06

RSpec Capybara Poltergeist config

	require 'capybara/rspec'
	require 'capybara/poltergeist'

	Capybara.register_driver :poltergeist do \|app\|
	Capybara::Poltergeist::Driver.new(app, {
	debug: true,
	timeout: 120,
	js_errors: true,
	inspector: true,
	phantomjs_options: ['--load-images=no', '--ignore-ssl-errors=yes'],

EricLondon / emoji.rb

Created October 30, 2015 15:03 — forked from everm1nd/emoji.rb

Print Emoji in Ruby

EricLondon / nodejs_promise_example.js

Last active November 9, 2016 14:29

NodeJS Promise Example

	var error = undefined;
	var result = "wee!";

	var chainableMethod = function () {
	return new Promise(function(resolve, reject) {
	if (error) {
	console.log('got error');
	return reject(error);
	}
	console.log('no error');

EricLondon / sidekiq.rake

Created November 10, 2016 14:45

Sidekiq status rake task

	require 'sidekiq/api'

	namespace :sidekiq do
	desc 'Output Sidekiq Status'
	task status: :environment do
	divider = '=================================================='

	puts "#{divider}\nSTATS"
	stats = Sidekiq::Stats.new
	puts "\tProcesses:\t#{stats.processes_size}"

EricLondon / scala-get-methods.scala

Created August 25, 2017 11:30

scala-get-methods.scala

	""
	.getClass.getMethods.map(_.getName) // methods
	.sorted // sort
	.filter(_ matches "(?i).index.") // grep /index/i

	/////////

	implicit def toMethods(obj: AnyRef) = new {
	def methods = obj.getClass.getMethods.map(_.getName)
	}

EricLondon / emr-zeppelin-status.rb

Last active October 5, 2017 14:14

EMR/Zeppelin API notebook status check

	#!/usr/bin/env ruby

	require 'open-uri'
	require 'json'
	require 'pp'

	ZEP_HOST = 'localhost'
	ZEP_PORT = 8890
	ZEP_ADDR = "http://#{ZEP_HOST}:#{ZEP_PORT}"

EricLondon / Dockerfile

Created October 17, 2017 15:32

Docker build arguments