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/>.
18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
19 # Julien Tribino <julien.tribino@inria.fr>
22 from nepi.execution.resource import ResourceManager, clsinit_copy, \
23 ResourceState, reschedule_delay, failtrap
24 from nepi.execution.attribute import Attribute, Flags
25 from nepi.resources.omf.omf_resource import ResourceGateway, OMFResource
26 from nepi.resources.omf.omf_api import OMFAPIFactory
31 class OMFNode(OMFResource):
33 .. class:: Class Args :
35 :param ec: The Experiment controller
36 :type ec: ExperimentController
37 :param guid: guid of the RM
39 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
44 This class is used only by the Experiment Controller through the Resource Factory
48 _authorized_connections = ["OMFApplication" , "OMFWifiInterface"]
51 def _register_attributes(cls):
52 """Register the attributes of an OMF Node
55 hostname = Attribute("hostname", "Hostname of the machine")
57 cls._register_attribute(hostname)
59 # XXX: We don't necessary need to have the credentials at the
60 # moment we create the RM
61 def __init__(self, ec, guid):
63 :param ec: The Experiment controller
64 :type ec: ExperimentController
65 :param guid: guid of the RM
69 super(OMFNode, self).__init__(ec, guid)
77 def valid_connection(self, guid):
78 """ Check if the connection with the guid in parameter is possible.
79 Only meaningful connections are allowed.
81 :param guid: Guid of the current RM
86 rm = self.ec.get_resource(guid)
87 if rm.rtype() in self._authorized_connections:
88 msg = "Connection between %s %s and %s %s accepted" % (
89 self.rtype(), self._guid, rm.rtype(), guid)
94 msg = "Connection between %s %s and %s %s refused" % (
95 self.rtype(), self._guid, rm.rtype(), guid)
102 """ Deploy the RM. It means : Send Xmpp Message Using OMF protocol
103 to enroll the node into the experiment.
104 It becomes DEPLOYED after sending messages to enroll the node
107 if not self._omf_api :
108 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
109 self.get('xmppHost'), self.get('xmppPort'),
110 self.get('xmppPassword'), exp_id = self.exp_id)
112 if not self._omf_api :
113 msg = "Credentials are not initialzed. XMPP Connections impossible"
115 raise RuntimeError, msg
117 if not self.get('hostname') :
118 msg = "Hostname's value is not initialized"
120 raise RuntimeError, msg
123 self._omf_api.enroll_host(self.get('hostname'))
124 except AttributeError:
125 msg = "Credentials are not initialzed. XMPP Connections impossible"
129 super(OMFNode, self).deploy()
132 """Clean the RM at the end of the experiment
137 self._omf_api.release(self.get('hostname'))
139 OMFAPIFactory.release_api(self.get('xmppSlice'),
140 self.get('xmppHost'), self.get('xmppPort'),
141 self.get('xmppPassword'), exp_id = self.exp_id)
144 err = traceback.format_exc()
147 super(OMFNode, self).release()