Git-based deployment for Sinatra

git-deploy.rb

require 'sinatra/base'
require 'time'

class GitHook < Sinatra::Base
  
  def self.parse_git
    # Parse hash and date from the git log command
    sha1, date = `git log HEAD~1..HEAD --pretty=format:%h^%ci`.strip.split('^')
    set :commit_hash, sha1
    set :commit_date, Time.parse(date)
  end
  
  set (:autopull) { production? }
  parse_git
  
  # before do
  #   cache_control :public, :must_revalidate
  #   etag settings.commit_hash
  #   last_modified settings.commit_date
  # end
  
  post '/pull/and/restart/app' do
    content_type :txt
    msg = ""
    
    settings.parse_git
    root_path = File.expand_path(File.join(File.dirname(__FILE__), '..'))
    
    # app.settings.reset!
    # load app.settings.app_file
    
    if settings.autopull?
      msg << "checking for update and restarting.\n"
      `git pull 2>&1`
      `bundle install`
    else
      msg << "restarting only.\n"
    end

    web_pid = `cat #{root_path}/tmp/site.pid`.strip
    `kill -s HUP #{web_pid}`
    
    # mobile_pid = `cat #{root_path}/tmp/mobile.pid`.strip
    # `kill -s HUP #{mobile_pid}`

    msg << "done\n"
    msg
  end
  
end