SimplePythonFCGI

#!/usr/bin/python
#
# File name: project.fcgi
#
# This module provides the glue for running TurboGears applications behind
# FastCGI-enabled web servers. The code in this module depends on the fastcgi
# module downloadable from here:
#
# http://www.saddi.com/software/py-lib/py-lib/fcgi.py
#
# NOTE: The fcgi.py file needs to be placed in a location that is on the
# system path, such as the same the directory as the tg_fastcgi.py file
# or in the base directory of the TG app code.
#
# To configure this module, please edit the three variables in the "USER EDIT
# SECTION" before starting the TG application. Also remember to edit the
# top of this file with the correct Python installation information.
 
import cherrypy
import sys
import os
from os.path import *
import pkg_resources
import turbogears
 
pkg_resources.require("TurboGears")
 
# -- START USER EDIT SECTION
# -- Users must edit this section --
code_dir = '${PROJECTBASE}' # (Required) The base directory of the TG app code.
root_class_name = '${PROJECTNAME}.controllers.Root' # (Required) The fully qualified Root class name.
project_module_name = '${PROJECTNAME}.config' # (Required) The config module name.
log_dir = '' # (Optional) The log directory. Default = code_dir.
# -- END USER EDIT SECTION
 
class VirtualPathFilter(object):
    def on_start_resource(self):
        if not cherrypy.config.get('virtual_path_filter.on', False):
     return
 prefix = cherrypy.config.get('virtual_path_filter.prefix', '')
 if not prefix:
     return
 
 path = cherrypy.request.object_path
 if path == prefix:
     path = '/'
 elif path.startswith(prefix):
     path = path[len(prefix):]
 else:
     raise cherrypy.NotFound(path)
 cherrypy.request.object_path = path
 
 
def tg_init():
    """ Checks for the required data and initializes the application. """
 
    global code_dir
    global root_class_name
    global log_dir
    global project_module_name
    last_mark = 0
 
    # Input checks
    if not code_dir or not isdir(code_dir):
        raise ValueError("""The code directory setting is missing.
                            The fastcgi code will be unable to find
                            the TG code without this setting.""")
 
    if not root_class_name:
        raise ValueError("""The fully qualified root class name must
                            be provided.""")
 
    last_mark = root_class_name.rfind('.')
 
    if last_mark < 1 or last_mark + 1 == len(root_class_name):
        raise ValueError("""The user-defined class name is invalid.
                            Please make sure to include a fully
                            qualified class name for the root_class
                            value (e.g. wiki20.controllers.Root).""")
 
    sys.path.append(code_dir)
 
    # Change the directory so the TG log file will not be written to the
    # web app root.
    if log_dir and isdir(log_dir):
        os.chdir(log_dir)
    else:
        os.chdir(code_dir)
        log_dir = code_dir
 
    sys.stdout = open(join(log_dir, 'stdout.log'),'a')
    sys.stderr = open(join(log_dir, 'stderr.log'),'a')
 
    if exists(join(code_dir, "setup.py")):
        turbogears.update_config(configfile=join(code_dir, "dev.cfg"),modulename=project_module_name)
    else:
        turbogears.update_config(configfile=join(code_dir, "prod.cfg"),modulename=project_module_name)
 
    # Set environment to production to disable auto-reload and
    # add virutal path information.
    cherrypy.config.update({
        'global': {'server.environment': 'production'},
     '/' : { 'virtual_path_filter.on' : True,
     'virtual_path_filter.prefix' : '/bel.fcgi' }
  })
 
    # Parse out the root class information for Cherrypy Root class.
    package_name = root_class_name[:last_mark]
    class_name = root_class_name[last_mark+1:]
    _temp = __import__(package_name, globals(), locals(), [class_name], -1)
    Root = getattr(_temp, class_name)
    Root._cp_filters = [VirtualPathFilter()]
    cherrypy.root = Root()
 
# Main section -
# Initialize the application, then start the server.
tg_init()
 
from fcgi import WSGIServer
cherrypy.server.start(initOnly=True, serverClass=None)
 
from cherrypy._cpwsgi import wsgiApp
WSGIServer(application=wsgiApp).run()