Package translate :: Package misc :: Module wsgi

[hide private]
[frames] | no frames]

# Source Code for Module translate.misc.wsgi

     1  #!/usr/bin/env python
     2  # -*- coding: utf-8 -*-
     3  #
     4  # Copyright 2008-2009 Zuza Software Foundation
     5  #
     6  # This file is part of translate.
     7  #
     8  # This program is free software; you can redistribute it and/or modify
     9  # it under the terms of the GNU General Public License as published by
    10  # the Free Software Foundation; either version 2 of the License, or
    11  # (at your option) any later version.
    12  #
    13  # This program is distributed in the hope that it will be useful,
    14  # but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  # GNU General Public License for more details.
    17  #
    18  # You should have received a copy of the GNU General Public License
    19  # along with this program; if not, see <http://www.gnu.org/licenses/>.
    20
    21  """wrapper tht tries to pick the best available wsgi server"""
    22
    23  import logging
    24  import os
    25
    26
    27 -def launch_server_wsgiref(host, port, app):
    28      """use python's builtin simple_server, this is a last resort since
    29      it doesn't support concurrency at all"""
    30      from wsgiref import simple_server
    31
    32      class CustomRequestHandler(simple_server.WSGIRequestHandler):
    33          """Custom request handler, disables some inefficient defaults"""
    34
    35          def address_string(self):
    36              """Disable client reverse dns lookup."""
    37              return  self.client_address[0]
    38
    39          def log_error(self, format, *args):
    40              """Log errors using logging instead of printing to
    41              stderror"""
    42              logging.error("%s - - [%s] %s",
    43                            self.address_string(), self.log_date_time_string(), format % args)
    44
    45          def log_message(self, format, *args):
    46              """Log requests using logging instead of printing to
    47              stderror."""
    48              logging.info("%s - - [%s] %s",
    49                           self.address_string(), self.log_date_time_string(), format % args)
    50
    51      server = simple_server.make_server(host, port, app, handler_class=CustomRequestHandler)
    52      logging.info("Starting wsgiref server, listening on port %s", port)
    53      server.serve_forever()
    54
    55
    56 -def launch_server_django(host, port, app):
    57      """use django's development server, only works for django apps"""
    58      if 'DJANGO_SETTINGS_MODULE' not in os.environ:
    59          raise ImportError("no django settings module specified")
    60
    61      from django.core.servers.basehttp import  run
    62
    63      logging.info("Starting Django server, listening on port %s", port)
    64      run(host, port, app)
    65
    66
    67 -def launch_server_cherrypy(host, port, app):
    68      """use cherrypy's wsgiserver, a multithreaded scallable server"""
    69      from cherrypy.wsgiserver import  CherryPyWSGIServer
    70
    71      server = CherryPyWSGIServer((host, port), app)
    72      logging.info("Starting CherryPy server, listening on port %s", port)
    73      try:
    74          server.start()
    75      except KeyboardInterrupt:
    76          server.stop()
    77
    78 -def launch_server_werkzeug(host, port, app):
    79      """use werkzeug's simple multiprocess multithreaded server"""
    80      from werkzeug import run_simple
    81      logging.info("Starting Werkzeug server, listening on port %s", port)
    82      run_simple(host, port, app, threaded=True)
    83
    84
    85  #FIXME: implement threading http server based on BaseHTTPServer and wsgiref
    86
    87  servers = [launch_server_cherrypy, launch_server_werkzeug, launch_server_django, launch_server_wsgiref]
    88
    89
    90 -def launch_server(host, port, app):
    91      """use the best possible wsgi server"""
    92      for server in servers:
    93          try:
    94              server(host, port, app)
    95              break
    96          except ImportError:
    97              pass
    98