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>
21 from nepi.execution.resource import ResourceManager, clsinit_copy, \
22 ResourceState, reschedule_delay
23 from nepi.execution.attribute import Attribute, Flags
24 from nepi.resources.omf.omf_resource import ResourceGateway, OMFResource
25 from nepi.resources.omf.omf_api_factory import OMFAPIFactory
29 reschedule_check = "0.2s"
30 confirmation_counter = 600
33 class OMFNode(OMFResource):
35 .. class:: Class Args :
37 :param ec: The Experiment controller
38 :type ec: ExperimentController
39 :param guid: guid of the RM
41 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
46 _authorized_connections = ["OMFApplication" , "OMFWifiInterface"]
49 def _register_attributes(cls):
50 """Register the attributes of an OMF Node
53 hostname = Attribute("hostname", "Hostname of the machine")
55 cls._register_attribute(hostname)
57 # XXX: We don't necessary need to have the credentials at the
58 # moment we create the RM
59 def __init__(self, ec, guid):
61 :param ec: The Experiment controller
62 :type ec: ExperimentController
63 :param guid: guid of the RM
67 super(OMFNode, self).__init__(ec, guid)
75 def valid_connection(self, guid):
76 """ Check if the connection with the guid in parameter is possible.
77 Only meaningful connections are allowed.
79 :param guid: Guid of the current RM
84 rm = self.ec.get_resource(guid)
85 if rm.get_rtype() in self._authorized_connections:
86 msg = "Connection between %s %s and %s %s accepted" % (
87 self.get_rtype(), self._guid, rm.get_rtype(), guid)
91 msg = "Connection between %s %s and %s %s refused" % (
92 self.get_rtype(), self._guid, rm.get_rtype(), guid)
98 """ Deploy the RM. It means : Send Xmpp Message Using OMF protocol
99 to enroll the node into the experiment.
102 if not self.get('xmppServer'):
103 msg = "XmppServer is not initialzed. XMPP Connections impossible"
105 raise RuntimeError, msg
107 if not self.get('version'):
108 msg = "Version of OMF is not indicated"
110 raise RuntimeError, msg
112 if not (self.get('xmppUser') or self.get('xmppPort')
113 or self.get('xmppPassword')):
114 msg = "Credentials are not all initialzed. Default values will be used"
117 if not self._omf_api :
118 self._omf_api = OMFAPIFactory.get_api(self.get('version'),
119 self.get('xmppServer'), self.get('xmppUser'), self.get('xmppPort'),
120 self.get('xmppPassword'), exp_id = self.exp_id)
122 if not self.get('hostname') :
123 msg = "Hostname's value is not initialized"
125 raise RuntimeError, msg
127 if self.get('version') == "5":
128 self._omf_api.enroll_host(self.get('hostname'))
130 self._omf_api.enroll_topic(self.get('hostname'))
132 super(OMFNode, self).do_deploy()
134 def do_release(self):
135 """ Clean the RM at the end of the experiment by unenrolling
136 the node from the topic
139 from nepi.resources.omf.application import OMFApplication
140 rm_list = self.get_connected(OMFApplication.get_rtype())
143 if rm.state < ResourceState.RELEASED:
144 self.ec.schedule(reschedule_delay, self.release)
147 from nepi.resources.omf.interface import OMFWifiInterface
148 rm_list = self.get_connected(OMFWifiInterface.get_rtype())
151 if rm.state < ResourceState.RELEASED:
152 self.ec.schedule(reschedule_delay, self.release)
156 if self.get('version') == "5":
157 self._omf_api.release(self.get('hostname'))
159 self._omf_api.unenroll_topic(self.get('hostname'))
161 OMFAPIFactory.release_api(self.get('version'),
162 self.get('xmppServer'), self.get('xmppUser'), self.get('xmppPort'),
163 self.get('xmppPassword'), exp_id = self.exp_id)
165 super(OMFNode, self).do_release()