2 # NEPI, a framework to manage network experiments
3 # Copyright (C) 2014 INRIA
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
28 from optparse import OptionParser, SUPPRESS_HELP
30 from nepi.resources.netns.netnsclient import NetNSClient
31 from nepi.resources.netns.netnsserver import NetNSWrapperMessage
33 class LinuxNetNSClient(NetNSClient):
34 def __init__(self, emulation):
35 super(LinuxNetNSClient, self).__init__()
36 self._emulation = weakref.ref(emulation)
38 self._socat_proc = None
42 return self._emulation()
44 def send_msg(self, msg_type, *args, **kwargs):
45 msg = [msg_type, args, kwargs]
48 item = cPickle.dumps(item)
49 return base64.b64encode(item)
51 encoded = "|".join(map(encode, msg))
53 if self.emulation.node.get("hostname") in ['localhost', '127.0.0.1']:
54 sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
55 sock.connect(self.emulation.remote_socket)
56 sock.send("%s\n" % encoded)
57 reply = sock.recv(1024)
60 command = ( "python -c 'import socket;"
61 "sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM);"
62 "sock.connect(\"%(socket_addr)s\");"
63 "msg = \"%(encoded_message)s\\n\";"
65 "reply = sock.recv(1024);"
68 "encoded_message": encoded,
69 "socket_addr": self.emulation.remote_socket,
72 (reply, err), proc = self.emulation.node.execute(command,
75 if (err and proc.poll()) or reply.strip() == "":
76 msg = (" Couldn't connect to remote socket %s - REPLY: %s "
78 self.emulation.remote_socket, reply, err)
79 self.emulation.error(msg, reply, err)
80 raise RuntimeError(msg)
82 reply = cPickle.loads(base64.b64decode(reply))
86 def create(self, *args, **kwargs):
87 return self.send_msg(NetNSWrapperMessage.CREATE, *args, **kwargs)
89 def invoke(self, *args, **kwargs):
90 return self.send_msg(NetNSWrapperMessage.INVOKE, *args, **kwargs)
92 def set(self, *args, **kwargs):
93 return self.send_msg(NetNSWrapperMessage.SET, *args, **kwargs)
95 def get(self, *args, **kwargs):
96 return self.send_msg(NetNSWrapperMessage.GET, *args, **kwargs)
98 def flush(self, *args, **kwargs):
99 return self.send_msg(NetNSWrapperMessage.FLUSH, *args, **kwargs)
101 def shutdown(self, *args, **kwargs):
103 return self.send_msg(NetNSWrapperMessage.SHUTDOWN, *args, **kwargs)