nkryptic (owner)

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gist: 87935 Download_button fork
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Public Clone URL: git://gist.github.com/87935.git
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passenger_restarter.rb #
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# Allow the metal piece to run in isolation
require( File.dirname(__FILE__) + "/../../config/environment" ) unless defined?(Rails)
 
class PassengerRestarter
  @restart_url      = "/restart"
  @default_target   = "/"
  @restart_message  = "Restarted."
  @set_flash        = true
  
  def self.call(env)
    if Rails.env == 'development' && env["PATH_INFO"] =~ /^#{Regexp.quote(@restart_url)}/
      perform_restart
      set_flash_message(env) if @set_flash
      redirect( redirect_target(env) )
    else
      [404, {"Content-Type" => "text/html"}, ["Not Found"]]
    end
  end
  
  def self.perform_restart
    File.new( Rails.root.join("tmp/restart.txt"), "w" )
  end
  
  def self.set_flash_message(env)
    session = env['rack.session']
    flash = session["flash"] ||= ::ActionController::Flash::FlashHash.new
    flash[:notice] = @restart_message
  end
  
  def self.redirect_target(env)
    referer, host = env["HTTP_REFERER"], env["HTTP_HOST"]
    referer && referer.index(host) >= 0 ? referer : @default_target
  end
  
  def self.redirect(location)
    [302, {"Content-Type" => "text/html", "Location" => location}, [%{<html><body><p><a href="#{location}">Redirecting...</a></p></body></html>}]]
  end
end