|
|
# RhodeCode VCSServer provides access to different vcs backends via network.
|
|
|
# Copyright (C) 2014-2017 RodeCode GmbH
|
|
|
#
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
|
# it under the terms of the GNU General Public License as published by
|
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
|
# (at your option) any later version.
|
|
|
#
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
# GNU General Public License for more details.
|
|
|
#
|
|
|
# You should have received a copy of the GNU General Public License
|
|
|
# along with this program; if not, write to the Free Software Foundation,
|
|
|
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
|
|
"""Extract the responses of a WSGI app."""
|
|
|
|
|
|
__all__ = ('WSGIAppCaller',)
|
|
|
|
|
|
import io
|
|
|
import logging
|
|
|
import os
|
|
|
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
DEV_NULL = open(os.devnull)
|
|
|
|
|
|
|
|
|
def _complete_environ(environ, input_data):
|
|
|
"""Update the missing wsgi.* variables of a WSGI environment.
|
|
|
|
|
|
:param environ: WSGI environment to update
|
|
|
:type environ: dict
|
|
|
:param input_data: data to be read by the app
|
|
|
:type input_data: str
|
|
|
"""
|
|
|
environ.update({
|
|
|
'wsgi.version': (1, 0),
|
|
|
'wsgi.url_scheme': 'http',
|
|
|
'wsgi.multithread': True,
|
|
|
'wsgi.multiprocess': True,
|
|
|
'wsgi.run_once': False,
|
|
|
'wsgi.input': io.BytesIO(input_data),
|
|
|
'wsgi.errors': DEV_NULL,
|
|
|
})
|
|
|
|
|
|
|
|
|
# pylint: disable=too-few-public-methods
|
|
|
class _StartResponse(object):
|
|
|
"""Save the arguments of a start_response call."""
|
|
|
|
|
|
__slots__ = ['status', 'headers', 'content']
|
|
|
|
|
|
def __init__(self):
|
|
|
self.status = None
|
|
|
self.headers = None
|
|
|
self.content = []
|
|
|
|
|
|
def __call__(self, status, headers, exc_info=None):
|
|
|
# TODO(skreft): do something meaningful with the exc_info
|
|
|
exc_info = None # avoid dangling circular reference
|
|
|
self.status = status
|
|
|
self.headers = headers
|
|
|
|
|
|
return self.write
|
|
|
|
|
|
def write(self, content):
|
|
|
"""Write method returning when calling this object.
|
|
|
|
|
|
All the data written is then available in content.
|
|
|
"""
|
|
|
self.content.append(content)
|
|
|
|
|
|
|
|
|
class WSGIAppCaller(object):
|
|
|
"""Calls a WSGI app."""
|
|
|
|
|
|
def __init__(self, app):
|
|
|
"""
|
|
|
:param app: WSGI app to call
|
|
|
"""
|
|
|
self.app = app
|
|
|
|
|
|
def handle(self, environ, input_data):
|
|
|
"""Process a request with the WSGI app.
|
|
|
|
|
|
The returned data of the app is fully consumed into a list.
|
|
|
|
|
|
:param environ: WSGI environment to update
|
|
|
:type environ: dict
|
|
|
:param input_data: data to be read by the app
|
|
|
:type input_data: str
|
|
|
|
|
|
:returns: a tuple with the contents, status and headers
|
|
|
:rtype: (list<str>, str, list<(str, str)>)
|
|
|
"""
|
|
|
_complete_environ(environ, input_data)
|
|
|
start_response = _StartResponse()
|
|
|
log.debug("Calling wrapped WSGI application")
|
|
|
responses = self.app(environ, start_response)
|
|
|
responses_list = list(responses)
|
|
|
existing_responses = start_response.content
|
|
|
if existing_responses:
|
|
|
log.debug(
|
|
|
"Adding returned response to response written via write()")
|
|
|
existing_responses.extend(responses_list)
|
|
|
responses_list = existing_responses
|
|
|
if hasattr(responses, 'close'):
|
|
|
log.debug("Closing iterator from WSGI application")
|
|
|
responses.close()
|
|
|
|
|
|
log.debug("Handling of WSGI request done, returning response")
|
|
|
return responses_list, start_response.status, start_response.headers
|
|
|
|
