rename src/nepi/ into just nepi/

[nepi.git] / nepi / resources / linux / ns3 / ns3client.py

diff --git a/nepi/resources/linux/ns3/ns3client.py b/nepi/resources/linux/ns3/ns3client.py
new file mode 100644 (file)
index 0000000..ed41bdb
--- /dev/null
+++ b/nepi/resources/linux/ns3/ns3client.py
@@ -0,0 +1,117 @@
+#
+#    NEPI, a framework to manage network experiments
+#    Copyright (C) 2014 INRIA
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 2 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 General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+
+import base64
+import pickle
+import errno
+import os
+import socket
+import time
+import weakref
+import threading
+
+from optparse import OptionParser, SUPPRESS_HELP
+
+from nepi.resources.ns3.ns3client import NS3Client
+from nepi.resources.ns3.ns3server import NS3WrapperMessage
+
+class LinuxNS3Client(NS3Client):
+    def __init__(self, simulation):
+        super(LinuxNS3Client, self).__init__()
+        self._simulation = weakref.ref(simulation)
+        self._socket_lock = threading.Lock()
+
+    @property
+    def simulation(self):
+        return self._simulation()
+
+    def send_msg(self, msg_type, *args, **kwargs):
+        msg = [msg_type, args, kwargs]
+
+        def encode(item):
+            item = pickle.dumps(item)
+            return base64.b64encode(item)
+
+        encoded = "|".join(map(encode, msg))
+
+        with self._socket_lock:
+            if self.simulation.node.get("hostname") in ['localhost', '127.0.0.1']:
+                sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+                sock.connect(self.simulation.remote_socket)
+                sock.send("%s\n" % encoded)
+                reply = sock.recv(1024)
+                sock.close()
+            else:
+                command = ( "python -c 'import socket;"
+                    "sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM);"
+                    "sock.connect(\"%(socket_addr)s\");"
+                    "msg = \"%(encoded_message)s\\n\";"
+                    "sock.send(msg);"
+                    "reply = sock.recv(1024);"
+                    "sock.close();"
+                    "print reply'") % {
+                        "encoded_message": encoded,
+                        "socket_addr": self.simulation.remote_socket,
+                        }
+
+                (reply, err), proc = self.simulation.node.execute(command, 
+                        with_lock = True) 
+
+                if (err and proc.poll()) or reply.strip() == "":
+                    msg = (" Couldn't connect to remote socket %s - REPLY: %s "
+                          "- ERROR: %s ") % (
+                            self.simulation.remote_socket, reply, err)
+                    self.simulation.error(msg, reply, err)
+                    raise RuntimeError(msg)
+                       
+        reply = pickle.loads(base64.b64decode(reply))
+
+        return reply
+
+    def create(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.CREATE, *args, **kwargs)
+
+    def factory(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.FACTORY, *args, **kwargs)
+
+    def invoke(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.INVOKE, *args, **kwargs)
+
+    def set(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.SET, *args, **kwargs)
+
+    def get(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.GET, *args, **kwargs)
+
+    def flush(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.FLUSH, *args, **kwargs)
+
+    def start(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.START, *args, **kwargs)
+
+    def stop(self, *args, **kwargs):
+        return self.send_msg(NS3WrapperMessage.STOP, *args, **kwargs)
+
+    def shutdown(self, *args, **kwargs):
+        try:
+            return self.send_msg(NS3WrapperMessage.SHUTDOWN, *args, **kwargs)
+        except:
+            pass
+
+        return None
+