X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=vendor%2Frails%2Frailties%2Fdispatches%2Fgateway.cgi;fp=vendor%2Frails%2Frailties%2Fdispatches%2Fgateway.cgi;h=0305b7f810fe966dd0ae557effbbf14ebb98687c;hb=d115f2e23823271635bad69229a42cd8ac68debe;hp=0000000000000000000000000000000000000000;hpb=37cb670bf3ddde90b214e591f100ed4446469484;p=depot.git diff --git a/vendor/rails/railties/dispatches/gateway.cgi b/vendor/rails/railties/dispatches/gateway.cgi new file mode 100755 index 0000000..0305b7f --- /dev/null +++ b/vendor/rails/railties/dispatches/gateway.cgi @@ -0,0 +1,97 @@ +#!/usr/bin/env ruby + +require 'drb' + +# This file includes an experimental gateway CGI implementation. It will work +# only on platforms which support both fork and sockets. +# +# To enable it edit public/.htaccess and replace dispatch.cgi with gateway.cgi. +# +# Next, create the directory log/drb_gateway and grant the apache user rw access +# to said directory. +# +# On the next request to your server, the gateway tracker should start up, along +# with a few listener processes. This setup should provide you with much better +# speeds than dispatch.cgi. +# +# Keep in mind that the first request made to the server will be slow, as the +# tracker and listeners will have to load. Also, the tracker and listeners will +# shutdown after a period if inactivity. You can set this value below -- the +# default is 90 seconds. + +TrackerSocket = File.expand_path(File.join(File.dirname(__FILE__), '../log/drb_gateway/tracker.sock')) +DieAfter = 90 # Seconds +Listeners = 3 + +def message(s) + $stderr.puts "gateway.cgi: #{s}" if ENV && ENV["DEBUG_GATEWAY"] +end + +def listener_socket(number) + File.expand_path(File.join(File.dirname(__FILE__), "../log/drb_gateway/listener_#{number}.sock")) +end + +unless File.exist? TrackerSocket + message "Starting tracker and #{Listeners} listeners" + fork do + Process.setsid + STDIN.reopen "/dev/null" + STDOUT.reopen "/dev/null", "a" + + root = File.expand_path(File.dirname(__FILE__) + '/..') + + message "starting tracker" + fork do + ARGV.clear + ARGV << TrackerSocket << Listeners.to_s << DieAfter.to_s + load File.join(root, 'script', 'tracker') + end + + message "starting listeners" + require File.join(root, 'config/environment.rb') + Listeners.times do |number| + fork do + ARGV.clear + ARGV << listener_socket(number) << DieAfter.to_s + load File.join(root, 'script', 'listener') + end + end + end + + message "waiting for tracker and listener to arise..." + ready = false + 10.times do + sleep 0.5 + break if (ready = File.exist?(TrackerSocket) && File.exist?(listener_socket(0))) + end + + if ready + message "tracker and listener are ready" + else + message "Waited 5 seconds, listener and tracker not ready... dropping request" + Kernel.exit 1 + end +end + +DRb.start_service + +message "connecting to tracker" +tracker = DRbObject.new_with_uri("drbunix:#{TrackerSocket}") + +input = $stdin.read +$stdin.close + +env = ENV.inspect + +output = nil +tracker.with_listener do |number| + message "connecting to listener #{number}" + socket = listener_socket(number) + listener = DRbObject.new_with_uri("drbunix:#{socket}") + output = listener.process(env, input) + message "listener #{number} has finished, writing output" +end + +$stdout.write output +$stdout.flush +$stdout.close