Current File : //opt/cpanel/ea-ruby27/root/usr/share/passenger/helper-scripts/rack-preloader.rb
#!/opt/cpanel/ea-ruby27/root/usr/bin/ruby
# encoding: binary
# Phusion Passenger - https://www.phusionpassenger.com/
# Copyright (c) 2013-2018 Phusion Holding B.V.
#
# "Passenger", "Phusion Passenger" and "Union Station" are registered
# trademarks of Phusion Holding B.V.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
GC.copy_on_write_friendly = true if GC.respond_to?(:copy_on_write_friendly=)
module PhusionPassenger
module App
def self.options
@@options
end
def self.app
@@app
end
def self.init_passenger
STDOUT.sync = true
STDERR.sync = true
work_dir = ENV['PASSENGER_SPAWN_WORK_DIR'].to_s
if work_dir.empty?
abort "This program may only be invoked from Passenger (error: $PASSENGER_SPAWN_WORK_DIR not set)."
end
record_journey_step_end('SUBPROCESS_EXEC_WRAPPER', 'STEP_PERFORMED')
record_journey_step_begin('SUBPROCESS_WRAPPER_PREPARATION', 'STEP_IN_PROGRESS')
ruby_libdir = File.read("#{work_dir}/args/ruby_libdir").strip
passenger_root = File.read("#{work_dir}/args/passenger_root").strip
require "#{ruby_libdir}/phusion_passenger"
PhusionPassenger.locate_directories(passenger_root)
PhusionPassenger.require_passenger_lib 'loader_shared_helpers'
PhusionPassenger.require_passenger_lib 'preloader_shared_helpers'
PhusionPassenger.require_passenger_lib 'utils/json'
require 'socket'
end
def self.try_write_file(path, contents)
begin
File.open(path, 'wb') do |f|
f.write(contents)
end
rescue SystemCallError => e
STDERR.puts "Warning: unable to write to #{path}: #{e}"
end
end
def self.record_journey_step_begin(step, state, work_dir = nil)
dir = work_dir || ENV['PASSENGER_SPAWN_WORK_DIR']
step_dir = "#{dir}/response/steps/#{step.downcase}"
try_write_file("#{step_dir}/state", state)
try_write_file("#{step_dir}/begin_time", Time.now.to_f)
end
def self.record_journey_step_end(step, state, work_dir = nil)
dir = work_dir || ENV['PASSENGER_SPAWN_WORK_DIR']
step_dir = "#{dir}/response/steps/#{step.downcase}"
try_write_file("#{step_dir}/state", state)
if !File.exist?("#{step_dir}/begin_time") && !File.exist?("#{step_dir}/begin_time_monotonic")
try_write_file("#{step_dir}/begin_time", Time.now.to_f)
end
try_write_file("#{step_dir}/end_time", Time.now.to_f)
end
def self.preload_app
LoaderSharedHelpers.before_loading_app_code_step1('config.ru', options)
LoaderSharedHelpers.run_load_path_setup_code(options)
LoaderSharedHelpers.before_loading_app_code_step2(options)
LoaderSharedHelpers.activate_gem 'rack'
app_root = options["app_root"]
rackup_file = LoaderSharedHelpers.maybe_make_path_relative_to_app_root(
app_root, options["startup_file"] || "#{app_root}/config.ru")
rackup_code = ::File.open(rackup_file, 'rb') do |f|
f.read
end
@@app = eval("Rack::Builder.new {( #{rackup_code}\n )}.to_app",
TOPLEVEL_BINDING, rackup_file)
LoaderSharedHelpers.after_loading_app_code(options)
rescue Exception => e
LoaderSharedHelpers.record_and_print_exception(e)
LoaderSharedHelpers.about_to_abort(options, e)
exit LoaderSharedHelpers.exit_code_for_exception(e)
end
def self.create_server(options)
if defined?(NativeSupport)
unix_path_max = NativeSupport::UNIX_PATH_MAX
else
unix_path_max = options.fetch('UNIX_PATH_MAX', 100).to_i
end
if options['socket_dir']
socket_dir = options['socket_dir']
socket_prefix = "preloader"
else
socket_dir = Dir.tmpdir
socket_prefix = "PsgPreloader"
end
socket_filename = nil
server = nil
Utils.retry_at_most(128, Errno::EADDRINUSE) do
socket_filename = "#{socket_dir}/#{socket_prefix}.#{rand(0xFFFFFFFF).to_s(36)}"
socket_filename = socket_filename.slice(0, unix_path_max - 10)
server = UNIXServer.new(socket_filename)
end
server.close_on_exec!
File.chmod(0600, socket_filename)
[server, socket_filename]
end
def self.reinitialize_std_channels(work_dir)
if File.exist?("#{work_dir}/stdin")
STDIN.reopen("#{work_dir}/stdin", 'r')
end
if File.exist?("#{work_dir}/stdout_and_err")
STDOUT.reopen("#{work_dir}/stdout_and_err", 'w')
STDERR.reopen(STDOUT)
end
STDOUT.sync = STDERR.sync = true
end
def self.negotiate_spawn_command
begin
work_dir = ENV['PASSENGER_SPAWN_WORK_DIR']
@@options = File.open("#{work_dir}/args.json", 'rb') do |f|
Utils::JSON.parse(f.read)
end
reinitialize_std_channels(work_dir)
LoaderSharedHelpers.run_block_and_record_step_progress('SUBPROCESS_PREPARE_AFTER_FORKING_FROM_PRELOADER') do
LoaderSharedHelpers.before_handling_requests(true, options)
end
handler = nil
LoaderSharedHelpers.run_block_and_record_step_progress('SUBPROCESS_LISTEN') do
handler = RequestHandler.new(STDIN, options.merge("app" => app))
end
LoaderSharedHelpers.dump_all_information(options)
LoaderSharedHelpers.advertise_sockets(options, handler)
LoaderSharedHelpers.advertise_readiness(options)
rescue Exception => e
LoaderSharedHelpers.record_and_print_exception(e)
LoaderSharedHelpers.about_to_abort(options, e)
exit LoaderSharedHelpers.exit_code_for_exception(e)
end
handler
end
################## Main code ##################
init_passenger
@@options = PreloaderSharedHelpers.init(self)
LoaderSharedHelpers.record_journey_step_end('SUBPROCESS_WRAPPER_PREPARATION',
'STEP_PERFORMED')
LoaderSharedHelpers.run_block_and_record_step_progress('SUBPROCESS_APP_LOAD_OR_EXEC') do
preload_app
end
server = nil
LoaderSharedHelpers.run_block_and_record_step_progress('SUBPROCESS_LISTEN') do
begin
server = create_server(options)
PreloaderSharedHelpers.advertise_sockets(options, server)
LoaderSharedHelpers.dump_all_information(options)
rescue Exception => e
LoaderSharedHelpers.record_and_print_exception(e)
LoaderSharedHelpers.about_to_abort(options, e)
exit LoaderSharedHelpers.exit_code_for_exception(e)
end
end
LoaderSharedHelpers.advertise_readiness(options)
subprocess_work_dir = PreloaderSharedHelpers.run_main_loop(server, options)
if subprocess_work_dir
# Inside forked subprocess
ENV['PASSENGER_SPAWN_WORK_DIR'] = subprocess_work_dir
handler = negotiate_spawn_command
handler.main_loop
handler.cleanup
LoaderSharedHelpers.after_handling_requests
end
end # module App
end # module PhusionPassenger
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