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
25 reschedule_delay = "0.5s"
28 class OMFChannel(ResourceManager):
30 .. class:: Class Args :
32 :param ec: The Experiment controller
33 :type ec: ExperimentController
34 :param guid: guid of the RM
36 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
41 This class is used only by the Experiment Controller through the Resource Factory
45 _authorized_connections = ["OMFWifiInterface", "OMFNode"]
49 def _register_attributes(cls):
50 """Register the attributes of an OMF channel
52 channel = Attribute("channel", "Name of the application")
53 xmppSlice = Attribute("xmppSlice","Name of the slice", flags = Flags.Credential)
54 xmppHost = Attribute("xmppHost", "Xmpp Server",flags = Flags.Credential)
55 xmppPort = Attribute("xmppPort", "Xmpp Port",flags = Flags.Credential)
56 xmppPassword = Attribute("xmppPassword", "Xmpp Port",flags = Flags.Credential)
57 cls._register_attribute(channel)
58 cls._register_attribute(xmppSlice)
59 cls._register_attribute(xmppHost)
60 cls._register_attribute(xmppPort)
61 cls._register_attribute(xmppPassword)
63 def __init__(self, ec, guid):
65 :param ec: The Experiment controller
66 :type ec: ExperimentController
67 :param guid: guid of the RM
69 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
73 super(OMFChannel, self).__init__(ec, guid)
75 self._nodes_guid = list()
79 def _validate_connection(self, guid):
80 """Check if the connection is available.
82 :param guid: Guid of the current RM
87 rm = self.ec.get_resource(guid)
88 if rm.rtype() in self._authorized_connections:
89 msg = "Connection between %s %s and %s %s accepted" % (self.rtype(), self._guid, rm.rtype(), guid)
92 msg = "Connection between %s %s and %s %s refused" % (self.rtype(), self._guid, rm.rtype(), guid)
96 def _get_target(self, conn_set):
98 Get the couples (host, interface) that used this channel
100 :param conn_set: Connections of the current Guid
103 :return: self._nodes_guid
107 rm_iface = self.ec.get_resource(elt)
108 for conn in rm_iface.connections:
109 rm_node = self.ec.get_resource(conn)
110 if rm_node.rtype() == "OMFNode":
111 if rm_iface.state < ResourceState.READY or rm_node.state < ResourceState.READY:
113 couple = [rm_node.get('hostname'), rm_iface.get('alias')]
115 self._nodes_guid.append(couple)
116 return self._nodes_guid
122 if not self._omf_api :
123 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
124 self.get('xmppHost'), self.get('xmppPort'), self.get('xmppPassword'))
126 if self.get('channel'):
127 set_nodes = self._get_target(self._connections)
128 if set_nodes == "reschedule" :
129 self.ec.schedule(reschedule_delay, self.deploy)
132 for couple in set_nodes:
133 #print "Couple node/alias : " + couple[0] + " , " + couple[1]
134 attrval = self.get('channel')
135 attrname = "net/%s/%s" % (couple[1], 'channel')
136 self._omf_api.configure(couple[0], attrname, attrval)
138 super(OMFChannel, self).deploy()
141 """ Discover the availables channels
147 """ Provision some availables channels
153 """Send Xmpp Message Using OMF protocol to configure Channel
157 super(OMFChannel, self).start()
160 """Send Xmpp Message Using OMF protocol to put down the interface
163 super(OMFChannel, self).stop()
166 """Clean the RM at the end of the experiment
169 OMFAPIFactory.release_api(self.get('xmppSlice'),
170 self.get('xmppHost'), self.get('xmppPort'), self.get('xmppPassword'))