Download scripts and templates dir from a git repo. (useful for deploying OSS CF releases)

download_scripts_and_templates.rb

#!/usr/bin/env ruby
# Usage: ./download_scripts_and_templates <repo> <ref>
# Output: Directory of download

require 'bundler/setup'
require 'logger'
require 'octokit'
require 'base64'

def prereqs
  ARGV << '--help' if ARGV.count < 2

  opts = OptionParser.new do |opts|
    opts.banner = "Usage: #{File.basename($0)} <repo> <ref>\n    GITHUB_API_KEY is a required env"
    opts.separator ''
    opts.on_tail('-h', '--help', 'Show this message') do
      puts opts
      exit 0
    end
  end
  opts.parse!
end

def fetch_subtree(dir, root, subtree_name)
  subtree = root.select { |v| v.path == subtree_name }.first
  FileUtils.mkdir_p(File.join(dir, subtree_name))
  subtree.rels[:self].get.data.tree.each do |v|
    filename = v.path
    b64content = v.rels[:self].get.data.content
    File.open(File.join(dir,subtree_name,filename), 'w') do |f|
      f.write Base64.decode64(b64content)
    end
  end
  LOGGER.info subtree_name + " downloaded into #{dir}/#{subtree_name}/"
end


prereqs
LOGGER=Logger.new($stderr)
repo = ARGV[0]
ref = ARGV[1]


Octokit.auto_paginate = true
@client = Octokit::Client.new(:access_token => ENV.fetch('GITHUB_API_KEY'))

dir = Dir.mktmpdir(File.basename($0))
LOGGER.info "Created tmp directory: #{dir}"
tree = @client.tree(repo, ref).tree

fetch_subtree(dir, tree, "templates")
fetch_subtree(dir, tree, "scripts")

puts dir

@mkb