svn: Avoid chunked transfer for Subversion

rhodecode/lib/middleware/simplesvn.py

@@ -1,130 +1,130 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 from urlparse import urljoin
 
 import requests
 
 import rhodecode
 from rhodecode.lib.middleware import simplevcs
 from rhodecode.lib.utils import is_valid_repo
 
 
 class SimpleSvnApp(object):
     IGNORED_HEADERS = [
         'connection', 'keep-alive', 'content-encoding',
         'transfer-encoding']
 
     def __init__(self, config):
         self.config = config
 
     def __call__(self, environ, start_response):
         request_headers = self._get_request_headers(environ)
 
         data = environ['wsgi.input']
-        # johbo: On Gunicorn, we end up with a 415 response if we pass data
-        # to requests. I think the request is usually without payload, still
-        # reading the data to be on the safe side.
-        if environ['REQUEST_METHOD'] == 'MKCOL':
+        # johbo: Avoid that we end up with sending the request in chunked
+        # transfer encoding (mainly on Gunicorn). If we know the content
+        # length, then we should transfer the payload in one request.
+        if environ['REQUEST_METHOD'] == 'MKCOL' or 'CONTENT_LENGTH' in environ:
             data = data.read()
 
         response = requests.request(
             environ['REQUEST_METHOD'], self._get_url(environ['PATH_INFO']),
             data=data, headers=request_headers)
 
         response_headers = self._get_response_headers(response.headers)
         start_response(
             '{} {}'.format(response.status_code, response.reason),
             response_headers)
         return response.iter_content(chunk_size=1024)
 
     def _get_url(self, path):
         return urljoin(
             self.config.get('subversion_http_server_url', ''), path)
 
     def _get_request_headers(self, environ):
         headers = {}
 
         for key in environ:
             if not key.startswith('HTTP_'):
                 continue
             new_key = key.split('_')
             new_key = [k.capitalize() for k in new_key[1:]]
             new_key = '-'.join(new_key)
             headers[new_key] = environ[key]
 
         if 'CONTENT_TYPE' in environ:
             headers['Content-Type'] = environ['CONTENT_TYPE']
 
         if 'CONTENT_LENGTH' in environ:
             headers['Content-Length'] = environ['CONTENT_LENGTH']
 
         return headers
 
     def _get_response_headers(self, headers):
         return [
             (h, headers[h])
             for h in headers
             if h.lower() not in self.IGNORED_HEADERS
         ]
 
 
 class SimpleSvn(simplevcs.SimpleVCS):
 
     SCM = 'svn'
     READ_ONLY_COMMANDS = ('OPTIONS', 'PROPFIND', 'GET', 'REPORT')
 
     def _get_repository_name(self, environ):
         """
         Gets repository name out of PATH_INFO header
 
         :param environ: environ where PATH_INFO is stored
         """
         path = environ['PATH_INFO'].split('!')
         repo_name = path[0].strip('/')
 
         # SVN includes the whole path in it's requests, including
         # subdirectories inside the repo. Therefore we have to search for
         # the repo root directory.
         if not is_valid_repo(repo_name, self.basepath, self.SCM):
             current_path = ''
             for component in repo_name.split('/'):
                 current_path += component
                 if is_valid_repo(current_path, self.basepath, self.SCM):
                     return current_path
                 current_path += '/'
 
         return repo_name
 
     def _get_action(self, environ):
         return (
             'pull'
             if environ['REQUEST_METHOD'] in self.READ_ONLY_COMMANDS
             else 'push')
 
     def _create_wsgi_app(self, repo_path, repo_name, config):
         return SimpleSvnApp(config)
 
     def _create_config(self, extras, repo_name):
         server_url = rhodecode.CONFIG.get(
             'rhodecode_subversion_http_server_url', '')
         extras['subversion_http_server_url'] = (
             server_url or 'http://localhost/')
         return extras

rhodecode/tests/lib/middleware/test_simplesvn.py

@@ -1,185 +1,185 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 from StringIO import StringIO
 
 import pytest
 from mock import patch, Mock
 
 import rhodecode
 from rhodecode.lib.middleware.simplesvn import SimpleSvn, SimpleSvnApp
 
 
 class TestSimpleSvn(object):
     @pytest.fixture(autouse=True)
     def simple_svn(self, pylonsapp):
         self.app = SimpleSvn(
             application='None',
             config={'auth_ret_code': '',
                     'base_path': rhodecode.CONFIG['base_path']})
 
     def test_get_config(self):
         extras = {'foo': 'FOO', 'bar': 'BAR'}
         config = self.app._create_config(extras, repo_name='test-repo')
         assert config == extras
 
     @pytest.mark.parametrize(
         'method', ['OPTIONS', 'PROPFIND', 'GET', 'REPORT'])
     def test_get_action_returns_pull(self, method):
         environment = {'REQUEST_METHOD': method}
         action = self.app._get_action(environment)
         assert action == 'pull'
 
     @pytest.mark.parametrize(
         'method', [
             'MKACTIVITY', 'PROPPATCH', 'PUT', 'CHECKOUT', 'MKCOL', 'MOVE',
             'COPY', 'DELETE', 'LOCK', 'UNLOCK', 'MERGE'
         ])
     def test_get_action_returns_push(self, method):
         environment = {'REQUEST_METHOD': method}
         action = self.app._get_action(environment)
         assert action == 'push'
 
     @pytest.mark.parametrize(
         'path, expected_name', [
             ('/hello-svn', 'hello-svn'),
             ('/hello-svn/', 'hello-svn'),
             ('/group/hello-svn/', 'group/hello-svn'),
             ('/group/hello-svn/!svn/vcc/default', 'group/hello-svn'),
         ])
     def test_get_repository_name(self, path, expected_name):
         environment = {'PATH_INFO': path}
         name = self.app._get_repository_name(environment)
         assert name == expected_name
 
     def test_get_repository_name_subfolder(self, backend_svn):
         repo = backend_svn.repo
         environment = {
             'PATH_INFO': '/{}/path/with/subfolders'.format(repo.repo_name)}
         name = self.app._get_repository_name(environment)
         assert name == repo.repo_name
 
     def test_create_wsgi_app(self):
         with patch('rhodecode.lib.middleware.simplesvn.SimpleSvnApp') as (
                 wsgi_app_mock):
             config = Mock()
             wsgi_app = self.app._create_wsgi_app(
                 repo_path='', repo_name='', config=config)
 
         wsgi_app_mock.assert_called_once_with(config)
         assert wsgi_app == wsgi_app_mock()
 
 
 class TestSimpleSvnApp(object):
     data = '<xml></xml>'
     path = '/group/my-repo'
     wsgi_input = StringIO(data)
     environment = {
         'HTTP_DAV': (
             'http://subversion.tigris.org/xmlns/dav/svn/depth,'
             ' http://subversion.tigris.org/xmlns/dav/svn/mergeinfo'),
         'HTTP_USER_AGENT': 'SVN/1.8.11 (x86_64-linux) serf/1.3.8',
         'REQUEST_METHOD': 'OPTIONS',
         'PATH_INFO': path,
         'wsgi.input': wsgi_input,
         'CONTENT_TYPE': 'text/xml',
         'CONTENT_LENGTH': '130'
     }
 
     def setup_method(self, method):
         self.host = 'http://localhost/'
         self.app = SimpleSvnApp(
             config={'subversion_http_server_url': self.host})
 
     def test_get_request_headers_with_content_type(self):
         expected_headers = {
             'Dav': self.environment['HTTP_DAV'],
             'User-Agent': self.environment['HTTP_USER_AGENT'],
             'Content-Type': self.environment['CONTENT_TYPE'],
             'Content-Length': self.environment['CONTENT_LENGTH']
         }
         headers = self.app._get_request_headers(self.environment)
         assert headers == expected_headers
 
     def test_get_request_headers_without_content_type(self):
         environment = self.environment.copy()
         environment.pop('CONTENT_TYPE')
         expected_headers = {
             'Dav': environment['HTTP_DAV'],
             'Content-Length': self.environment['CONTENT_LENGTH'],
             'User-Agent': environment['HTTP_USER_AGENT'],
         }
         request_headers = self.app._get_request_headers(environment)
         assert request_headers == expected_headers
 
     def test_get_response_headers(self):
         headers = {
             'Connection': 'keep-alive',
             'Keep-Alive': 'timeout=5, max=100',
             'Transfer-Encoding': 'chunked',
             'Content-Encoding': 'gzip',
             'MS-Author-Via': 'DAV',
             'SVN-Supported-Posts': 'create-txn-with-props'
         }
         expected_headers = [
             ('MS-Author-Via', 'DAV'),
             ('SVN-Supported-Posts', 'create-txn-with-props')
         ]
         response_headers = self.app._get_response_headers(headers)
         assert sorted(response_headers) == sorted(expected_headers)
 
     def test_get_url(self):
         url = self.app._get_url(self.path)
         expected_url = '{}{}'.format(self.host.strip('/'), self.path)
         assert url == expected_url
 
     def test_call(self):
         start_response = Mock()
         response_mock = Mock()
         response_mock.headers = {
             'Content-Encoding': 'gzip',
             'MS-Author-Via': 'DAV',
             'SVN-Supported-Posts': 'create-txn-with-props'
         }
         response_mock.status_code = 200
         response_mock.reason = 'OK'
         with patch('rhodecode.lib.middleware.simplesvn.requests.request') as (
                 request_mock):
             request_mock.return_value = response_mock
             self.app(self.environment, start_response)
 
         expected_url = '{}{}'.format(self.host.strip('/'), self.path)
         expected_request_headers = {
             'Dav': self.environment['HTTP_DAV'],
             'User-Agent': self.environment['HTTP_USER_AGENT'],
             'Content-Type': self.environment['CONTENT_TYPE'],
             'Content-Length': self.environment['CONTENT_LENGTH']
         }
         expected_response_headers = [
             ('SVN-Supported-Posts', 'create-txn-with-props'),
             ('MS-Author-Via', 'DAV')
         ]
         request_mock.assert_called_once_with(
             self.environment['REQUEST_METHOD'], expected_url,
-            data=self.wsgi_input, headers=expected_request_headers)
+            data=self.data, headers=expected_request_headers)
         response_mock.iter_content.assert_called_once_with(chunk_size=1024)
         args, _ = start_response.call_args
         assert args[0] == '200 OK'
         assert sorted(args[1]) == sorted(expected_response_headers)