import sys

from django.core import management

def main(settings_file, logfile=None):

    try:

        mod = __import__(settings_file)

        components = settings_file.split('.')

        for comp in components[1:]:

            mod = getattr(mod, comp)

    except ImportError, e:

        sys.stderr.write("Error loading the settings module '%s': %s"

                            % (settings_file, e))

        sys.exit(1)

    # Setup settings

    management.setup_environ(mod)

    if logfile:

        import datetime

        class logger(object):

            def __init__(self, logfile):

                self.logfile = logfile

            def write(self, data):

                self.log(data)

            def writeline(self, data):

                self.log(data)

            def log(self, msg):

                line = '%s - %s\n' % (

                    datetime.datetime.now().strftime('%Y%m%d %H:%M:%S'), msg)

                fp = open(self.logfile, 'a')

                try:

                    fp.write(line)

                finally:

                    fp.close()

        sys.stdout = sys.stderr = logger(logfile)

    from django.core.handlers.wsgi import WSGIHandler

    # Run WSGI handler for the application

    return WSGIHandler()