2 NEPI, a framework to manage network experiments
3 Copyright (C) 2013 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/>.
20 from nepi.execution.resource import ResourceManager, clsinit, ResourceState
21 from nepi.execution.attribute import Attribute, Flags
23 from nepi.resources.omf.omf_api import OMFAPIFactory
27 reschedule_delay = "0.5s"
30 class OMFNode(ResourceManager):
32 .. class:: Class Args :
34 :param ec: The Experiment controller
35 :type ec: ExperimentController
36 :param guid: guid of the RM
38 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
43 This class is used only by the Experiment Controller through the Resource Factory
47 _authorized_connections = ["OMFApplication" , "OMFWifiInterface"]
50 def _register_attributes(cls):
51 """Register the attributes of an OMF Node
54 hostname = Attribute("hostname", "Hostname of the machine")
55 cpu = Attribute("cpu", "CPU of the node")
56 ram = Attribute("ram", "RAM of the node")
57 xmppSlice = Attribute("xmppSlice","Name of the slice",
58 flags = Flags.Credential)
59 xmppHost = Attribute("xmppHost", "Xmpp Server",
60 flags = Flags.Credential)
61 xmppPort = Attribute("xmppPort", "Xmpp Port",
62 flags = Flags.Credential)
63 xmppPassword = Attribute("xmppPassword", "Xmpp Port",
64 flags = Flags.Credential)
66 host = Attribute("host", "Hostname of the machine",
68 gateway = Attribute("gateway", "Gateway",
70 granularity = Attribute("granularity", "Granularity of the reservation time",
72 hardware_type = Attribute("hardware_type", "Hardware type of the machine",
75 cls._register_attribute(hostname)
76 cls._register_attribute(ram)
77 cls._register_attribute(cpu)
78 cls._register_attribute(xmppSlice)
79 cls._register_attribute(xmppHost)
80 cls._register_attribute(xmppPort)
81 cls._register_attribute(xmppPassword)
83 cls._register_attribute(host)
84 cls._register_attribute(gateway)
85 cls._register_attribute(granularity)
86 cls._register_attribute(hardware_type)
88 # XXX: We don't necessary need to have the credentials at the
89 # moment we create the RM
90 def __init__(self, ec, guid):
92 :param ec: The Experiment controller
93 :type ec: ExperimentController
94 :param guid: guid of the RM
96 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
100 super(OMFNode, self).__init__(ec, guid)
106 def _validate_connection(self, guid):
107 """Check if the connection is available.
109 :param guid: Guid of the current RM
114 rm = self.ec.get_resource(guid)
115 if rm.rtype() in self._authorized_connections:
116 msg = "Connection between %s %s and %s %s accepted" % (self.rtype(), self._guid, rm.rtype(), guid)
119 msg = "Connection between %s %s and %s %s refused" % (self.rtype(), self._guid, rm.rtype(), guid)
127 if not self._omf_api :
128 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
129 self.get('xmppHost'), self.get('xmppPort'), self.get('xmppPassword'))
130 self._omf_api.enroll_host(self.get('hostname'))
132 super(OMFNode, self).deploy()
135 """ Discover the availables nodes
141 """ Provision some availables nodes
147 """Send Xmpp Message Using OMF protocol to enroll the node into the experiment
150 super(OMFNode, self).start()
154 """Send Xmpp Message Using OMF protocol to disconnect the node
157 super(OMFNode, self).stop()
160 """Clean the RM at the end of the experiment
163 self._omf_api.release(self.get('hostname'))
164 OMFAPIFactory.release_api(self.get('xmppSlice'),
165 self.get('xmppHost'), self.get('xmppPort'), self.get('xmppPassword'))
169 #routes = self.tc._add_route.get(self.guid, [])
170 #iface_guids = self.tc.get_connected(self.guid, "devs", "node")
173 (destination, netprefix, nexthop, metric, device) = route
174 netmask = ipaddr2.ipv4_mask2dot(netprefix)
176 # Validate that the interface is associated to the node
177 for iface_guid in iface_guids:
178 iface = self.tc.elements.get(iface_guid)
179 if iface.devname == device:
180 self._omf_api.execute(self.get('hostname'),
181 "Id#%s" % str(random.getrandbits(128)),
182 "add -net %s netmask %s dev %s" % (destination, netmask, iface.devname),
183 "/sbin/route", # path