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docutils.Lib.modjy.modjy.py Maven / Gradle / Ivy
###
#
# Copyright Alan Kennedy.
#
# You may contact the copyright holder at this uri:
#
# http://www.xhaus.com/contact/modjy
#
# The licence under which this code is released is the Apache License v2.0.
#
# The terms and conditions of this license are listed in a file contained
# in the distribution that also contained this file, under the name
# LICENSE.txt.
#
# You may also read a copy of the license at the following web address.
#
# http://modjy.xhaus.com/LICENSE.txt
#
###
import jarray
import synchronize
import sys
import types
sys.add_package("javax.servlet")
sys.add_package("javax.servlet.http")
sys.add_package("org.python.core")
from modjy_exceptions import *
from modjy_log import *
from modjy_params import modjy_param_mgr, modjy_servlet_params
from modjy_wsgi import modjy_wsgi
from modjy_response import start_response_object
from modjy_impl import modjy_impl
from modjy_publish import modjy_publisher
from javax.servlet.http import HttpServlet
class modjy_servlet(HttpServlet, modjy_publisher, modjy_wsgi, modjy_impl):
def __init__(self):
HttpServlet.__init__(self)
def do_param(self, name, value):
if name[:3] == 'log':
getattr(self.log, "set_%s" % name)(value)
else:
self.params[name] = value
def process_param_container(self, param_container):
param_enum = param_container.getInitParameterNames()
while param_enum.hasMoreElements():
param_name = param_enum.nextElement()
self.do_param(param_name, param_container.getInitParameter(param_name))
def get_params(self):
self.process_param_container(self.servlet_context)
self.process_param_container(self.servlet)
def init(self, delegator):
self.servlet = delegator
self.servlet_context = self.servlet.getServletContext()
self.servlet_config = self.servlet.getServletConfig()
self.log = modjy_logger(self.servlet_context)
self.params = modjy_param_mgr(modjy_servlet_params)
self.get_params()
self.init_impl()
self.init_publisher()
import modjy_exceptions
self.exc_handler = getattr(modjy_exceptions, '%s_handler' % self.params['exc_handler'])()
def service (self, req, resp):
wsgi_environ = {}
try:
self.dispatch_to_application(req, resp, wsgi_environ)
except ModjyException, mx:
self.log.error("Exception servicing request: %s" % str(mx))
typ, value, tb = sys.exc_info()[:]
self.exc_handler.handle(req, resp, wsgi_environ, mx, (typ, value, tb) )
def get_j2ee_ns(self, req, resp):
return {
'servlet': self.servlet,
'servlet_context': self.servlet_context,
'servlet_config': self.servlet_config,
'request': req,
'response': resp,
}
def dispatch_to_application(self, req, resp, environ):
app_callable = self.get_app_object(req, environ)
self.set_wsgi_environment(req, resp, environ, self.params, self.get_j2ee_ns(req, resp))
response_callable = start_response_object(req, resp)
try:
app_return = self.call_application(app_callable, environ, response_callable)
if app_return is None:
raise ReturnNotIterable("Application returned None: must return an iterable")
self.deal_with_app_return(environ, response_callable, app_return)
except ModjyException, mx:
self.raise_exc(mx.__class__, str(mx))
except Exception, x:
self.raise_exc(ApplicationException, str(x))
def call_application(self, app_callable, environ, response_callable):
if self.params['multithread']:
return app_callable.__call__(environ, response_callable)
else:
return synchronize.apply_synchronized( \
app_callable, \
app_callable, \
(environ, response_callable))
def expand_relative_path(self, path):
if path.startswith("$"):
return self.servlet.getServletContext().getRealPath(path[1:])
return path
def raise_exc(self, exc_class, message):
self.log.error(message)
raise exc_class(message)
