examples/linux/vlc_streaming.py

diff --git a/examples/linux/vlc_streaming.py b/examples/linux/vlc_streaming.py
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+#
+#    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 as published by
+#    the Free Software Foundation, either version 3 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, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+#
+# Instructions to run this example:
+#
+# 1. First edit the script file where required (See ASSING messages)
+#
+# 2. Then, run the script:
+#
+# $ cd <path-to-nepi>
+# $ PYTHONPATH=$PYTHONPATH:~/repos/nepi/src python examples/linux/vlc_streaming.py -u inria_nepi -i ~/.ssh/id_rsa_planetlab -a planetlab1.u-strasbg.fr -b planetlab1.utt.fr | vlc -
+
+
+from nepi.execution.ec import ExperimentController
+from nepi.execution.resource import ResourceState, ResourceAction 
+
+from optparse import OptionParser, SUPPRESS_HELP
+import os
+
+
+usage = ("usage: %prog -a <hostanme1> -b <hostname2> -u <username> -i <ssh-key>")
+
+parser = OptionParser(usage = usage)
+parser.add_option("-a", "--hostname1", dest="hostname1", 
+        help="Remote host 1", type="str")
+parser.add_option("-b", "--hostname2", dest="hostname2", 
+        help="Remote host 2", type="str")
+parser.add_option("-u", "--username", dest="username", 
+        help="Username to SSH to remote host", type="str")
+parser.add_option("-i", "--ssh-key", dest="ssh_key", 
+        help="Path to private SSH key to be used for connection", 
+        type="str")
+(options, args) = parser.parse_args()
+
+hostname1 = options.hostname1
+hostname2 = options.hostname2
+username = options.username
+ssh_key = options.ssh_key
+
+## Create the experiment controller
+ec = ExperimentController(exp_id = "demo_CCN")
+
+## Register node 1
+node1 = ec.register_resource("LinuxNode")
+# Set the hostname of the first node to use for the experiment
+ec.set(node1, "hostname", hostname1)
+# username should be your SSH user 
+ec.set(node1, "username", username)
+# Absolute path to the SSH private key
+ec.set(node1, "identity", ssh_key)
+# Clean all files, results, etc, from previous experiments wit the same exp_id
+ec.set(node1, "cleanExperiment", True)
+# Kill all running processes in the node before running the experiment
+ec.set(node1, "cleanProcesses", True)
+
+## Register node 2 
+node2 = ec.register_resource("LinuxNode")
+# Set the hostname of the first node to use for the experiment
+ec.set(node2, "hostname", hostname2)
+# username should be your SSH user 
+ec.set(node2, "username", username)
+# Absolute path to the SSH private key
+ec.set(node2, "identity", ssh_key)
+# Clean all files, results, etc, from previous experiments wit the same exp_id
+ec.set(node2, "cleanExperiment", True)
+# Kill all running processes in the node before running the experiment
+ec.set(node2, "cleanProcesses", True)
+
+# Register VLC server
+video = "big_buck_bunny_240p_mpeg4_lq.ts"
+local_path_to_video = os.path.join(
+        os.path.dirname(os.path.realpath(__file__)),
+            "..", video)
+
+command = ("sudo -S dbus-uuidgen --ensure; sleep 3;"
+          "vlc -I dummy -vvv ${SHARE}/%s " 
+          "--sout '#rtp{dst=%s,port=5004,mux=ts}' vlc://quit") % \
+                  (video, hostname2)
+
+server = ec.register_resource("LinuxApplication")
+ec.set(server, "depends", "vlc")
+ec.set(server, "files", local_path_to_video)
+ec.set(server, "command", command)
+ec.register_connection(server, node1)
+
+command = ("sudo -S dbus-uuidgen --ensure; sleep 3; "
+        "vlc -I dummy rtp://%s:5004/%s "
+        "--sout '#std{access=file,mux=ts,dst=VIDEO}'") % \
+                (hostname2, video)
+
+client = ec.register_resource("LinuxApplication")
+ec.set(client, "depends", "vlc")
+ec.set(client, "command", command)
+ec.register_connection(client, node2)
+
+# The stream can only be retrieved after ccnd is running
+ec.register_condition(server, ResourceAction.START, 
+        client, ResourceState.STARTED)
+
+## Deploy all resources
+ec.deploy()
+
+# Wait until the ccncat is finished
+ec.wait_finished([server])
+
+print ec.trace(client, "VIDEO")
+
+ec.shutdown()
+
+