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, ResourceState
22 from nepi.execution.attribute import Attribute, Flags
23 from nepi.resources.omf.omf_api import OMFAPIFactory
25 reschedule_delay = "0.5s"
28 class OMFApplication(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)
41 This class is used only by the Experiment Controller through the Resource Factory
44 _rtype = "OMFApplication"
45 _authorized_connections = ["OMFNode"]
48 def _register_attributes(cls):
49 """Register the attributes of an OMF application
52 appid = Attribute("appid", "Name of the application")
53 path = Attribute("path", "Path of the application")
54 args = Attribute("args", "Argument of the application")
55 env = Attribute("env", "Environnement variable of the application")
56 xmppSlice = Attribute("xmppSlice","Name of the slice", flags = Flags.Credential)
57 xmppHost = Attribute("xmppHost", "Xmpp Server",flags = Flags.Credential)
58 xmppPort = Attribute("xmppPort", "Xmpp Port",flags = Flags.Credential)
59 xmppPassword = Attribute("xmppPassword", "Xmpp Port",flags = Flags.Credential)
60 cls._register_attribute(appid)
61 cls._register_attribute(path)
62 cls._register_attribute(args)
63 cls._register_attribute(env)
64 cls._register_attribute(xmppSlice)
65 cls._register_attribute(xmppHost)
66 cls._register_attribute(xmppPort)
67 cls._register_attribute(xmppPassword)
70 def __init__(self, ec, guid):
72 :param ec: The Experiment controller
73 :type ec: ExperimentController
74 :param guid: guid of the RM
76 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
81 super(OMFApplication, self).__init__(ec, guid)
92 def _validate_connection(self, guid):
93 """Check if the connection is available.
95 :param guid: Guid of the current RM
100 rm = self.ec.get_resource(guid)
101 if rm.rtype() not in self._authorized_connections:
102 msg = "Connection between %s %s and %s %s refused : An Application can be connected only to a Node" % (self.rtype(), self._guid, rm.rtype(), guid)
105 elif len(self.connections) != 0 :
106 msg = "Connection between %s %s and %s %s refused : Already Connected" % (self.rtype(), self._guid, rm.rtype(), guid)
110 msg = "Connection between %s %s and %s %s accepted" % (self.rtype(), self._guid, rm.rtype(), guid)
118 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
119 self.get('xmppHost'), self.get('xmppPort'), self.get('xmppPassword'))
120 super(OMFApplication, self).deploy()
123 """Send Xmpp Message Using OMF protocol to execute the application
126 super(OMFApplication, self).start()
127 msg = " " + self.rtype() + " ( Guid : " + str(self._guid) +") : " + self.get('appid') + " : " + self.get('path') + " : " + self.get('args') + " : " + self.get('env')
130 if self.get('appid') and self.get('path') and self.get('args') and self.get('env'):
131 rm_list = self.get_connected("OMFNode")
132 for rm_node in rm_list:
133 self._omf_api.execute(rm_node.get('hostname'),self.get('appid'), self.get('args'), self.get('path'), self.get('env'))
135 msg = "Application's information are not initialized"
139 """Send Xmpp Message Using OMF protocol to kill the application
143 rm_list = self.get_connected("OMFNode")
144 for rm_node in rm_list :
145 self._omf_api.exit(rm_node.get('hostname'),self.get('appid'))
146 super(OMFApplication, self).stop()
147 self._state = ResourceState.FINISHED
151 """Clean the RM at the end of the experiment
154 OMFAPIFactory.release_api(self.get('xmppSlice'),
155 self.get('xmppHost'), self.get('xmppPort'), self.get('xmppPassword'))