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 version 2 as
7 # published by the Free Software Foundation;
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
20 # Example of how to run this experiment (replace with your information):
23 # python examples/linux/ccn_simple_transfer.py -a <hostname1> -b <hostname2> -u <username> -i <ssh-key>
30 # Linux host Linux host
31 # 0 ------- network -------- 1
34 from __future__ import print_function
36 from nepi.execution.ec import ExperimentController
38 from optparse import OptionParser
41 usage = ("usage: %prog -a <hostname1> -b <hostname2> -u <username> -i <ssh-key>")
43 parser = OptionParser(usage = usage)
44 parser.add_option("-a", "--hostname1", dest="hostname1",
45 help="Remote host 1", type="str")
46 parser.add_option("-b", "--hostname2", dest="hostname2",
47 help="Remote host 2", type="str")
48 parser.add_option("-u", "--username", dest="username",
49 help="Username to SSH to remote host", type="str")
50 parser.add_option("-i", "--ssh-key", dest="ssh_key",
51 help="Path to private SSH key to be used for connection",
53 (options, args) = parser.parse_args()
55 hostname1 = options.hostname1
56 hostname2 = options.hostname2
57 username = options.username
58 ssh_key = options.ssh_key
60 ## Create the experiment controller
61 ec = ExperimentController(exp_id = "ccn_simple_transfer")
63 ##### CONFIGURING NODE 1
66 node1 = ec.register_resource("linux::Node")
67 # Set the hostname of the first node to use for the experiment
68 ec.set(node1, "hostname", hostname1)
69 # username should be your SSH user
70 ec.set(node1, "username", username)
71 # Absolute path to the SSH private key
72 ec.set(node1, "identity", ssh_key)
73 # Clean all files, results, etc, from previous experiments wit the same exp_id
74 ec.set(node1, "cleanExperiment", True)
75 # Kill all running processes in the node before running the experiment
76 ec.set(node1, "cleanProcesses", True)
78 ## Register a CCN daemon in node 1
79 ccnd1 = ec.register_resource("linux::CCND")
80 # Set ccnd log level to 7
81 ec.set(ccnd1, "debug", 7)
82 ec.register_connection(ccnd1, node1)
84 ## Register a repository in node 1
85 ccnr1 = ec.register_resource("linux::CCNR")
86 ec.register_connection(ccnr1, ccnd1)
88 ## Push the file into the repository
89 local_path_to_content = os.path.join(
90 os.path.dirname(os.path.realpath(__file__)),
91 "..", "big_buck_bunny_240p_mpeg4_lq.ts")
93 content_name = "ccnx:/test/FILE"
95 # Add a content to the repository
96 co = ec.register_resource("linux::CCNContent")
97 ec.set(co, "contentName", content_name)
98 # NEPI will upload the specified file to the remote node and write it
99 # into the CCN repository
100 ec.set(co, "content", local_path_to_content)
101 ec.register_connection(co, ccnr1)
103 ##### CONFIGURING NODE 2
106 node2 = ec.register_resource("linux::Node")
107 # Set the hostname of the first node to use for the experiment
108 ec.set(node2, "hostname", hostname2)
109 # username should be your SSH user
110 ec.set(node2, "username", username)
111 # Absolute path to the SSH private key
112 ec.set(node2, "identity", ssh_key)
113 # Clean all files, results, etc, from previous experiments wit the same exp_id
114 ec.set(node2, "cleanExperiment", True)
115 # Kill all running processes in the node before running the experiment
116 ec.set(node2, "cleanProcesses", True)
118 ## Register a CCN daemon in node 2
119 ccnd2 = ec.register_resource("linux::CCND")
120 # Set ccnd log level to 7
121 ec.set(ccnd2, "debug", 7)
122 ec.register_connection(ccnd2, node2)
124 ## Retrieve the file stored in node 1 from node 2
125 ccncat = ec.register_resource("linux::CCNCat")
126 ec.set(ccncat, "contentName", content_name)
127 ec.register_connection(ccncat, ccnd2)
129 ##### INTERCONNECTING CCN NODES ...
131 # Register a FIB entry from node 1 to node 2
132 entry1 = ec.register_resource("linux::FIBEntry")
133 ec.set(entry1, "host", hostname2)
134 ec.register_connection(entry1, ccnd1)
136 # Register a FIB entry from node 2 to node 1
137 entry2 = ec.register_resource("linux::FIBEntry")
138 ec.set(entry2, "host", hostname1)
139 ec.register_connection(entry2, ccnd2)
141 ##### STARTING THE EXPERIMENT
143 ## Deploy all resources
146 # Wait until the ccncat is finished
147 ec.wait_finished([ccncat])
149 stdout = ec.trace(ccncat, "stdout")
150 with open("video.ts", "w") as f:
155 print("Transfered FILE stored localy at video.ts")