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, ResourceState, \
23 from nepi.execution.attribute import Attribute, Flags
24 from nepi.resources.omf.omf_resource import ResourceGateway, OMFResource
25 from nepi.resources.omf.node import OMFNode
26 from nepi.resources.omf.omf_api import OMFAPIFactory
30 class OMFApplication(OMFResource):
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)
43 This class is used only by the Experiment Controller through the
47 _rtype = "OMFApplication"
48 _authorized_connections = ["OMFNode"]
51 def stdin_send(cls, old_value, new_value):
55 def _register_attributes(cls):
56 """ Register the attributes of an OMF application
59 appid = Attribute("appid", "Name of the application")
60 path = Attribute("path", "Path of the application")
61 args = Attribute("args", "Argument of the application")
62 env = Attribute("env", "Environnement variable of the application")
63 stdin = Attribute("stdin", "Input of the application", default = "", set_hook = cls.stdin_send )
64 cls._register_attribute(appid)
65 cls._register_attribute(path)
66 cls._register_attribute(args)
67 cls._register_attribute(env)
68 cls._register_attribute(stdin)
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)
80 super(OMFApplication, self).__init__(ec, guid)
93 if self.ec.exp_id.startswith('exp-'):
99 rm_list = self.get_connected(OMFNode.rtype())
100 if rm_list: return rm_list[0]
105 def valid_connection(self, guid):
106 """ Check if the connection with the guid in parameter is possible.
107 Only meaningful connections are allowed.
109 :param guid: Guid of RM it will be connected
114 rm = self.ec.get_resource(guid)
115 if rm.rtype() not in self._authorized_connections:
116 msg = ("Connection between %s %s and %s %s refused: "
117 "An Application can be connected only to a Node" ) % \
118 (self.rtype(), self._guid, rm.rtype(), guid)
123 elif len(self.connections) != 0 :
124 msg = ("Connection between %s %s and %s %s refused: "
125 "This Application is already connected" ) % \
126 (self.rtype(), self._guid, rm.rtype(), guid)
132 msg = "Connection between %s %s and %s %s accepted" % (
133 self.rtype(), self._guid, rm.rtype(), guid)
139 """ Deploy the RM. It means nothing special for an application
140 for now (later it will be upload sources, ...)
141 It becomes DEPLOYED after getting the xmpp client.
144 if not self._omf_api :
145 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
146 self.get('xmppHost'), self.get('xmppPort'),
147 self.get('xmppPassword'), exp_id = self.exp_id)
149 if not self._omf_api :
150 msg = "Credentials are not initialzed. XMPP Connections impossible"
155 super(OMFApplication, self).deploy()
158 """ Start the RM. It means : Send Xmpp Message Using OMF protocol
159 to execute the application.
160 It becomes STARTED before the messages are sent (for coordination)
163 if not (self.get('appid') and self.get('path')) :
164 msg = "Application's information are not initialized"
169 if not self.get('args'):
170 self.set('args', " ")
171 if not self.get('env'):
174 # Some information to check the information in parameter
175 msg = " " + self.rtype() + " ( Guid : " + str(self._guid) +") : " + \
176 self.get('appid') + " : " + self.get('path') + " : " + \
177 self.get('args') + " : " + self.get('env')
181 self._omf_api.execute(self.node.get('hostname'),self.get('appid'), \
182 self.get('args'), self.get('path'), self.get('env'))
183 except AttributeError:
184 msg = "Credentials are not initialzed. XMPP Connections impossible"
189 super(OMFApplication, self).start()
192 """ Stop the RM. It means : Send Xmpp Message Using OMF protocol to
193 kill the application.
194 State is set to STOPPED after the message is sent.
198 self._omf_api.exit(self.node.get('hostname'),self.get('appid'))
199 except AttributeError:
200 msg = "Credentials were not initialzed. XMPP Connections impossible"
205 super(OMFApplication, self).stop()
208 """ Clean the RM at the end of the experiment and release the API.
212 OMFAPIFactory.release_api(self.get('xmppSlice'),
213 self.get('xmppHost'), self.get('xmppPort'),
214 self.get('xmppPassword'), exp_id = self.exp_id)
216 super(OMFApplication, self).release()