Source code for ovirtlago.utils
#
# Copyright 2014 Red Hat, Inc.
#
# 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 2 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
#
# Refer to the README and COPYING files for full details of the license
#
import BaseHTTPServer
import contextlib
import os
import threading
import SimpleHTTPServer
import lago.utils as utils
import constants
[docs]def run_command(command, **kwargs):
"""
Wrapper around :func:`lago.utils.run_command` that prepends the ovirtlago
LIBEXEC_DIR to the path if needed
Args:
command (?): parameter to send as the command parameter to
:func:`lago.utils.run_command`
**kwargs (?): keyword parameters to send as the command parameter to
:func:`lago.utils.run_command`
Returns:
?: Whatever :func:`lago.utils.run_command` returns
"""
# add libexec to PATH if needed
if constants.LIBEXEC_DIR not in os.environ['PATH'].split(':'):
os.environ['PATH'] = '%s:%s' % (
constants.LIBEXEC_DIR, os.environ['PATH']
)
return utils.run_command(command, **kwargs)
[docs]def _BetterHTTPRequestHandler(root_dir):
"""
Factory for _BetterHTTPRequestHandler classes
Args:
root_dir (path): Path to the dir to serve
Returns:
_BetterHTTPRequestHandler: A ready to be used improved http request
handler
"""
_SimpleHTTPRequestHandler = SimpleHTTPServer.SimpleHTTPRequestHandler
class _BetterHTTPRequestHandler(_SimpleHTTPRequestHandler):
__root_dir = root_dir
def translate_path(self, path):
return os.path.join(
self.__root_dir, _SimpleHTTPRequestHandler.translate_path(
self, path
)[len(os.getcwd()):].lstrip('/')
)
def log_message(self, *args, **kwargs):
pass
return _BetterHTTPRequestHandler
[docs]def _create_http_server(ip, port, root_dir):
"""
Starts an http server with an improved request handler
Args:
ip (str): Ip to listen on
port (int): Port to register on
root_dir (str): path to the directory to serve
Returns:
BaseHTTPServer: instance of the http server, already running on a
thread
"""
server = BaseHTTPServer.HTTPServer(
(ip, port),
_BetterHTTPRequestHandler(root_dir),
)
threading.Thread(target=server.serve_forever).start()
return server
@contextlib.contextmanager
[docs]def repo_server_context(prefix):
"""
Context manager that starts an http server that serves the given prefix's
yum repository. Will listen on :class:`constants.REPO_SERVER_PORT` and on
the first network defined in the previx virt config
Args:
prefix(ovirtlago.OvirtPrefix): prefix to start the server for
Returns:
None
"""
gw_ip = prefix.virt_env.get_net().gw()
port = constants.REPO_SERVER_PORT
server = _create_http_server(gw_ip, port, prefix.paths.internal_repo())
try:
yield
finally:
server.shutdown()