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__init__.py
275 lines | 8.7 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
# Copyright (C) 2014-2016 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/
"""
Various version Control System version lib (vcs) management abstraction layer
for Python. Build with server client architecture.
"""
VERSION = (0, 5, 0, 'dev')
__version__ = '.'.join((str(each) for each in VERSION[:4]))
__all__ = [
'get_version', 'get_repo', 'get_backend',
'VCSError', 'RepositoryError', 'CommitError'
]
import atexit
import logging
import subprocess
import time
import urlparse
from cStringIO import StringIO
import pycurl
import Pyro4
from Pyro4.errors import CommunicationError
from rhodecode.lib.vcs.conf import settings
from rhodecode.lib.vcs.backends import get_repo, get_backend
from rhodecode.lib.vcs.exceptions import (
VCSError, RepositoryError, CommitError)
log = logging.getLogger(__name__)
def get_version():
"""
Returns shorter version (digit parts only) as string.
"""
return '.'.join((str(each) for each in VERSION[:3]))
def connect_pyro4(server_and_port):
from rhodecode.lib.vcs import connection, client
from rhodecode.lib.middleware.utils import scm_app
git_remote = client.ThreadlocalProxyFactory(
settings.pyro_remote(settings.PYRO_GIT, server_and_port))
hg_remote = client.ThreadlocalProxyFactory(
settings.pyro_remote(settings.PYRO_HG, server_and_port))
svn_remote = client.ThreadlocalProxyFactory(
settings.pyro_remote(settings.PYRO_SVN, server_and_port))
connection.Git = client.RepoMaker(proxy_factory=git_remote)
connection.Hg = client.RepoMaker(proxy_factory=hg_remote)
connection.Svn = client.RepoMaker(proxy_factory=svn_remote)
scm_app.GIT_REMOTE_WSGI = Pyro4.Proxy(
settings.pyro_remote(
settings.PYRO_GIT_REMOTE_WSGI, server_and_port))
scm_app.HG_REMOTE_WSGI = Pyro4.Proxy(
settings.pyro_remote(
settings.PYRO_HG_REMOTE_WSGI, server_and_port))
@atexit.register
def free_connection_resources():
connection.Git = None
connection.Hg = None
connection.Svn = None
def connect_http(server_and_port):
from rhodecode.lib.vcs import connection, client_http
from rhodecode.lib.middleware.utils import scm_app
session = _create_http_rpc_session()
connection.Git = client_http.RepoMaker(server_and_port, '/git', session)
connection.Hg = client_http.RepoMaker(server_and_port, '/hg', session)
connection.Svn = client_http.RepoMaker(server_and_port, '/svn', session)
scm_app.HG_REMOTE_WSGI = client_http.VcsHttpProxy(
server_and_port, '/proxy/hg')
scm_app.GIT_REMOTE_WSGI = client_http.VcsHttpProxy(
server_and_port, '/proxy/git')
@atexit.register
def free_connection_resources():
connection.Git = None
connection.Hg = None
connection.Svn = None
def connect_vcs(server_and_port, protocol='pyro4'):
"""
Initializes the connection to the vcs server.
:param server_and_port: str, e.g. "localhost:9900"
:param protocol: str, "pyro4" or "http"
"""
if protocol == 'pyro4':
connect_pyro4(server_and_port)
elif protocol == 'http':
connect_http(server_and_port)
# TODO: johbo: This function should be moved into our test suite, there is
# no reason to support starting the vcsserver in Enterprise itself.
def start_vcs_server(server_and_port, protocol='pyro4', log_level=None):
"""
Starts the vcs server in a subprocess.
"""
log.info('Starting VCSServer as a sub process with %s protocol', protocol)
if protocol == 'http':
return _start_http_vcs_server(server_and_port, log_level)
elif protocol == 'pyro4':
return _start_pyro4_vcs_server(server_and_port, log_level)
def _start_pyro4_vcs_server(server_and_port, log_level=None):
_try_to_shutdown_running_server(server_and_port)
host, port = server_and_port.rsplit(":", 1)
host = host.strip('[]')
args = [
'vcsserver', '--port', port, '--host', host, '--locale', 'en_US.UTF-8',
'--threadpool', '32']
if log_level:
args += ['--log-level', log_level]
proc = subprocess.Popen(args)
def cleanup_server_process():
proc.kill()
atexit.register(cleanup_server_process)
server = create_vcsserver_proxy(server_and_port, protocol='pyro4')
_wait_until_vcs_server_is_reachable(server)
def _start_http_vcs_server(server_and_port, log_level=None):
# TODO: mikhail: shutdown if an http server already runs
host, port = server_and_port.rsplit(":", 1)
args = [
'pserve', 'vcsserver/development_pyramid.ini',
'http_port=%s' % (port, ), 'http_host=%s' % (host, )]
proc = subprocess.Popen(args)
def cleanup_server_process():
proc.kill()
atexit.register(cleanup_server_process)
server = create_vcsserver_proxy(server_and_port, protocol='http')
_wait_until_vcs_server_is_reachable(server)
def _wait_until_vcs_server_is_reachable(server):
while xrange(80): # max 40s of sleep
try:
server.ping()
break
except (CommunicationError, pycurl.error):
pass
time.sleep(0.5)
def _try_to_shutdown_running_server(server_and_port):
server = create_vcsserver_proxy(server_and_port)
try:
server.shutdown()
except (CommunicationError, pycurl.error):
return
# TODO: Not sure why this is important, but without it the following start
# of the server fails.
server = create_vcsserver_proxy(server_and_port)
server.ping()
def create_vcsserver_proxy(server_and_port, protocol='pyro4'):
if protocol == 'pyro4':
return _create_vcsserver_proxy_pyro4(server_and_port)
elif protocol == 'http':
return _create_vcsserver_proxy_http(server_and_port)
def _create_vcsserver_proxy_pyro4(server_and_port):
server = Pyro4.Proxy(
settings.pyro_remote(settings.PYRO_VCSSERVER, server_and_port))
return server
def _create_vcsserver_proxy_http(server_and_port):
from rhodecode.lib.vcs import client_http
session = _create_http_rpc_session()
url = urlparse.urljoin('http://%s' % server_and_port, '/server')
return client_http.RemoteObject(url, session)
class CurlSession(object):
"""
Modeled so that it provides a subset of the requests interface.
This has been created so that it does only provide a minimal API for our
needs. The parts which it provides are based on the API of the library
`requests` which allows us to easily benchmark against it.
Please have a look at the class :class:`requests.Session` when you extend
it.
"""
def __init__(self):
curl = pycurl.Curl()
# TODO: johbo: I did test with 7.19 of libcurl. This version has
# trouble with 100 - continue being set in the expect header. This
# can lead to massive performance drops, switching it off here.
curl.setopt(curl.HTTPHEADER, ["Expect:"])
curl.setopt(curl.TCP_NODELAY, True)
curl.setopt(curl.PROTOCOLS, curl.PROTO_HTTP)
self._curl = curl
def post(self, url, data, allow_redirects=False):
response_buffer = StringIO()
curl = self._curl
curl.setopt(curl.URL, url)
curl.setopt(curl.POST, True)
curl.setopt(curl.POSTFIELDS, data)
curl.setopt(curl.FOLLOWLOCATION, allow_redirects)
curl.setopt(curl.WRITEDATA, response_buffer)
curl.perform()
return CurlResponse(response_buffer)
class CurlResponse(object):
"""
The response of a request, modeled after the requests API.
This class provides a subset of the response interface known from the
library `requests`. It is intentionally kept similar, so that we can use
`requests` as a drop in replacement for benchmarking purposes.
"""
def __init__(self, response_buffer):
self._response_buffer = response_buffer
@property
def content(self):
return self._response_buffer.getvalue()
def _create_http_rpc_session():
session = CurlSession()
return session