# Copyright (C) 2013 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.
+# 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
#
# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
-from nepi.execution.ec import ExperimentController
+# This very simple experiment will ssh in a linux box, and from there
+# issue a ping command towards a landmark (default faraday.inria.fr)
+#
+# $ ping.py -u root mybox.domain.com
+#
+# would do the equivalent of
+# ssh root@mybox.domain.com ping -c3 faraday.inria.fr
+#
+# If nepi is not installed in your system, and you only have a git clone
+# you might wish to do instead
+#
+# $ cd <path-to-nepi>/src
+# $ python ../examples/linux/ping.py -u root mybox.domain.com
+
+# let's be ready for python3
+from __future__ import print_function
-from optparse import OptionParser, SUPPRESS_HELP
import os
+from argparse import ArgumentParser
+
+from nepi.execution.ec import ExperimentController
+
+#
+default_landmark = "faraday.inria.fr"
-usage = ("usage: %prog -a <hostanme> -u <username> -i <ssh-key>")
+parser = ArgumentParser()
+parser.add_argument("-u", "--username", dest="username",
+ help="Username to SSH to remote host")
+parser.add_argument("-i", "--ssh-key", dest="ssh_key",
+ help="Path to private SSH key to be used for connection")
+parser.add_argument("-l", "--landmark", dest='landmark', default=default_landmark,
+ help="Set pings destination, default={}".format(default_landmark))
+# this is required
+parser.add_argument("hostname", type=str)
-parser = OptionParser(usage = usage)
-parser.add_option("-a", "--hostname", dest="hostname",
- help="Remote host", 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()
+args = parser.parse_args()
-hostname = options.hostname
-username = options.username
-ssh_key = options.ssh_key
+hostname = args.hostname
+username = args.username
+ssh_key = args.ssh_key
+landmark = args.landmark
ec = ExperimentController(exp_id = "ping-exp")
-node = ec.register_resource("LinuxNode")
+node = ec.register_resource("linux::Node")
ec.set(node, "hostname", hostname)
ec.set(node, "username", username)
ec.set(node, "identity", ssh_key)
-ec.set(node, "cleanHome", True)
+ec.set(node, "cleanExperiment", True)
ec.set(node, "cleanProcesses", True)
-app = ec.register_resource("LinuxApplication")
-ec.set(app, "command", "ping -c3 nepi.inria.fr")
+app = ec.register_resource("linux::Application")
+ec.set(app, "command", "ping -c3 {}".format(landmark))
ec.register_connection(app, node)
ec.deploy()
ec.wait_finished(app)
-print ec.trace(app, "stdout")
+print(ec.trace(app, "stdout"))
ec.shutdown()