Class for spawning WSGI applications.
Methods
Included Modules
Constants
| REQUEST_HANDLER | = | File.expand_path(File.dirname(__FILE__) + "/request_handler.py") |
Public Class methods
[ show source ]
# File lib/phusion_passenger/wsgi/application_spawner.rb, line 36
36: def self.spawn_application(*args)
37: @@instance ||= ApplicationSpawner.new
38: @@instance.spawn_application(*args)
39: end
Public Instance methods
spawn_application(app_root, lower_privilege = true, lowest_user = "nobody", environment = "production")
Spawn an instance of the given WSGI application. When successful, an Application object will be returned, which represents the spawned application.
Raises:
- AppInitError: The WSGI application raised an exception or called exit() during startup.
- SystemCallError, IOError, SocketError: Something went wrong.
[ show source ]
# File lib/phusion_passenger/wsgi/application_spawner.rb, line 49
49: def spawn_application(app_root, lower_privilege = true, lowest_user = "nobody", environment = "production")
50: a, b = UNIXSocket.pair
51: pid = safe_fork(self.class.to_s, true) do
52: a.close
53:
54: file_descriptors_to_leave_open = [0, 1, 2, b.fileno]
55: NativeSupport.close_all_file_descriptors(file_descriptors_to_leave_open)
56: close_all_io_objects_for_fds(file_descriptors_to_leave_open)
57:
58: run(MessageChannel.new(b), app_root, lower_privilege, lowest_user, environment)
59: end
60: b.close
61: Process.waitpid(pid) rescue nil
62:
63: channel = MessageChannel.new(a)
64: pid, socket_name, socket_type = channel.read
65: if pid.nil?
66: raise IOError, "Connection closed"
67: end
68: owner_pipe = channel.recv_io
69: return Application.new(@app_root, pid, socket_name,
70: socket_type, owner_pipe)
71: end