Ian Chilton ichilton

Installing a Gem on Heroku from a Private GitHub Repo

Sometimes you want to use a gem on Heroku that is in a private repository on GitHub.

Using git over http you can authenticate to GitHub using basic authentication. However, we don't want to embed usernames and passwords in Gemfiles. Instead, we can use authentication tokens.

Get an OAuth Token from GitHub

First you will need to get an OAuth Token from GitHub using your own username and "note"

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = [email protected]:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

	//*****************************************************************************************************
	// Thermistor Linearisation and temperature print-out code

	// Thermistor Linearisation Code

	double Thermistor(int RawADC) {
	// Inputs ADC Value from Thermistor and outputs Temperature in Celsius
	// requires: include <math.h>
	// Utilizes the Steinhart-Hart Thermistor Equation:
	// Temperature in Kelvin = 1 / {A + B[ln(R)] + C[ln(R)]^3}

	upstream unicorn {
	server unix:/tmp/unicorn.<%= application %>.sock fail_timeout=0;
	}

	server {
	listen 80 default deferred;
	# server_name example.com;
	root <%= current_path %>/public;

	if (-f $document_root/system/maintenance.html) {

	Refinery CMS:
	Caching images generated by Dragonfly with Nginx cache_proxy instead of Rack:Cache

	Before:
	Static image served by Nginx: 4409.40 req/sec (mean)
	Dragonfly generated images from Rack:Cache: 286.66 req/sec (mean)

	After:
	Dragonfly generated images from Nginx proxy_cache: 4099 req/sec (mean)

	<?php
	class VirginMediaStatus
	{
	const
	SERVICE_ALL = 1,
	SERVICE_BROADBAND = 2,
	SERVICE_TV = 4,
	SERVICE_PHONE = 8;

	protected

	# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
	# We use latest stable nginx with fresh openssl, zlib and pcre dependencies.
	# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
	#
	# Deployment structure
	#
	# SERVER:
	# /etc/init.d/nginx (1. nginx)
	# /home/app/public_html/app_production/current (Capistrano directory)
	#

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

	gem 'mechanize'

	[alias]
	lg80 = "!git log --graph --color=always --abbrev-commit --date=relative --pretty=format:'%x00%h%x00%s%x00%cd%x00%an%x00%d' \| gawk -F '\\0' '{ printf \"%s\\033[31m%s\\033[0m %-50s \\033[32m%14s\\033[0m \\033[30;1m%s\\033[0m\\033[33m%s\\n\", $1, $2, gensub(/(.{49}).{2,}/, \"\\\\1…\",\"g\",$3), $4, $5, $6 }' \| less -R"