etwist/http.py
author Pierre-Yves David <pierre-yves.david@logilab.fr>
Tue, 31 Jul 2012 10:57:03 +0200
branchstable
changeset 8499 75abcdc94f4a
parent 8316 d5b1b75805dd
child 8930 6a02be304486
permissions -rw-r--r--
[storage] relies on event=='deleted' to detect "delete" event When we delete a previously edited entity, it *will* have a cw_edited attribute even if the goal is to delete it. The function get an argument that explicitly contains the "delete" event. The code now uses that instead.

"""twisted server for CubicWeb web instances

:organization: Logilab
:copyright: 2001-2011 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""

__docformat__ = "restructuredtext en"

from cubicweb.web.http_headers import Headers

class HTTPResponse(object):
    """An object representing an HTTP Response to be sent to the client.
    """
    def __init__(self, twisted_request, code=None, headers=None, stream=None):
        self._headers_out = headers
        self._twreq = twisted_request
        self._stream = stream
        self._code = code

        self._init_headers()
        self._finalize()

    def _init_headers(self):
        if self._headers_out is None:
            return
        # initialize headers
        for k, values in self._headers_out.getAllRawHeaders():
            self._twreq.responseHeaders.setRawHeaders(k, values)
        # add content-length if not present
        if (self._headers_out.getHeader('content-length') is None
            and self._stream is not None):
           self._twreq.setHeader('content-length', len(self._stream))

    def _finalize(self):
        # we must set code before writing anything, else it's too late
        if self._code is not None:
            self._twreq.setResponseCode(self._code)
        if self._stream is not None:
            self._twreq.write(str(self._stream))
        self._twreq.finish()

    def __repr__(self):
        return "<%s.%s code=%d>" % (self.__module__, self.__class__.__name__, self._code)