wsgi/handler.py
author Julien Cristau <julien.cristau@logilab.fr>
Thu, 10 Oct 2013 10:02:29 +0200
branchstable
changeset 9306 8ab0e601d418
parent 8695 358d8bed9626
child 9030 c1d5e8ca15ea
child 9287 e70c8c70e344
permissions -rw-r--r--
[web] don't rename resources in gen-static-datadir We should use the result from WebConfiguration.locate_resource to know which file to copy, not what name to copy it to. The destination file should be the name of the resource, as the client will request it. This matters in the case of cubicweb.css which locate_resource might rewrite to cubicweb.old.css. Closes #3206129
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""WSGI request handler for cubicweb"""
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cfd6ab461849 [Web-Request] Use rich header (closes #2204164)
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__docformat__ = "restructuredtext en"
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from itertools import chain, repeat, izip
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from cubicweb import AuthenticationError
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from cubicweb.web import DirectResponse
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from cubicweb.web.application import CubicWebPublisher
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from cubicweb.wsgi.request import CubicWebWsgiRequest
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# See http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
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STATUS_CODE_TEXT = {
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    100: 'CONTINUE',
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    101: 'SWITCHING PROTOCOLS',
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    200: 'OK',
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    201: 'CREATED',
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    202: 'ACCEPTED',
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    203: 'NON-AUTHORITATIVE INFORMATION',
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    204: 'NO CONTENT',
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    205: 'RESET CONTENT',
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    206: 'PARTIAL CONTENT',
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    300: 'MULTIPLE CHOICES',
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    301: 'MOVED PERMANENTLY',
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    302: 'FOUND',
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    303: 'SEE OTHER',
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    304: 'NOT MODIFIED',
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    305: 'USE PROXY',
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    306: 'RESERVED',
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    307: 'TEMPORARY REDIRECT',
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    400: 'BAD REQUEST',
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    401: 'UNAUTHORIZED',
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    402: 'PAYMENT REQUIRED',
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    403: 'FORBIDDEN',
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    404: 'NOT FOUND',
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    405: 'METHOD NOT ALLOWED',
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    406: 'NOT ACCEPTABLE',
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    407: 'PROXY AUTHENTICATION REQUIRED',
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    408: 'REQUEST TIMEOUT',
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    409: 'CONFLICT',
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    410: 'GONE',
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    411: 'LENGTH REQUIRED',
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    412: 'PRECONDITION FAILED',
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    413: 'REQUEST ENTITY TOO LARGE',
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    414: 'REQUEST-URI TOO LONG',
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    415: 'UNSUPPORTED MEDIA TYPE',
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    416: 'REQUESTED RANGE NOT SATISFIABLE',
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    417: 'EXPECTATION FAILED',
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    500: 'INTERNAL SERVER ERROR',
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    501: 'NOT IMPLEMENTED',
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    502: 'BAD GATEWAY',
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    503: 'SERVICE UNAVAILABLE',
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    504: 'GATEWAY TIMEOUT',
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    505: 'HTTP VERSION NOT SUPPORTED',
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}
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class WSGIResponse(object):
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    """encapsulates the wsgi response parameters
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    (code, headers and body if there is one)
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    """
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    def __init__(self, code, req, body=None):
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        text = STATUS_CODE_TEXT.get(code, 'UNKNOWN STATUS CODE')
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        self.status =  '%s %s' % (code, text)
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        self.headers = list(chain(*[izip(repeat(k), v)
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                                    for k, v in req.headers_out.getAllRawHeaders()]))
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        self.headers = [(str(k), str(v)) for k, v in self.headers]
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        if body:
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            self.body = [body]
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        else:
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            self.body = []
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    def __iter__(self):
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        return iter(self.body)
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class CubicWebWSGIApplication(object):
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    """This is the wsgi application which will be called by the
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    wsgi server with the WSGI ``environ`` and ``start_response``
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    parameters.
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    XXX: missing looping tasks and proper repository shutdown when
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    the application is stopped.
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    NOTE: no pyro
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    """
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    def __init__(self, config, vreg=None):
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        self.appli = CubicWebPublisher(config, vreg=vreg)
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        self.config = config
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        self.base_url = self.config['base-url']
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        self.https_url = self.config['https-url']
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        self.url_rewriter = self.appli.vreg['components'].select_or_none('urlrewriter')
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    def _render(self, req):
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        """this function performs the actual rendering
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        """
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        if self.base_url is None:
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            self.base_url = self.config._base_url = req.base_url()
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        try:
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            path = req.path
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            result = self.appli.handle_request(req, path)
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        except DirectResponse as ex:
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            return ex.response
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        return WSGIResponse(req.status_out, req, result)
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    def __call__(self, environ, start_response):
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        """WSGI protocol entry point"""
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        req = CubicWebWsgiRequest(environ, self.appli.vreg)
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        response = self._render(req)
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        start_response(response.status, response.headers)
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        return response.body
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    # these are overridden by set_log_methods below
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    # only defining here to prevent pylint from complaining
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    info = warning = error = critical = exception = debug = lambda msg,*a,**kw: None
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from logging import getLogger
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from cubicweb import set_log_methods
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set_log_methods(CubicWebWSGIApplication, getLogger('cubicweb.wsgi'))