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
28 #from nepi.util.sshfuncs import ProcStatus
29 from nepi.util import sshfuncs
33 class OMFApplication(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)
46 This class is used only by the Experiment Controller through the
50 _rtype = "OMFApplication"
51 _authorized_connections = ["OMFNode"]
54 def _register_attributes(cls):
55 """ Register the attributes of an OMF application
58 appid = Attribute("appid", "Name of the application")
59 path = Attribute("path", "Path of the application")
60 args = Attribute("args", "Argument of the application")
61 env = Attribute("env", "Environnement variable of the application")
62 stdin = Attribute("stdin", "Input of the application", default = "")
63 sources = Attribute("sources", "Sources of the application",
64 flags = Flags.ExecReadOnly)
65 sshuser = Attribute("sshUser", "user to connect with ssh",
66 flags = Flags.ExecReadOnly)
67 sshkey = Attribute("sshKey", "key to use for ssh",
68 flags = Flags.ExecReadOnly)
69 cls._register_attribute(appid)
70 cls._register_attribute(path)
71 cls._register_attribute(args)
72 cls._register_attribute(env)
73 cls._register_attribute(stdin)
74 cls._register_attribute(sources)
75 cls._register_attribute(sshuser)
76 cls._register_attribute(sshkey)
78 def __init__(self, ec, guid):
80 :param ec: The Experiment controller
81 :type ec: ExperimentController
82 :param guid: guid of the RM
84 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
88 super(OMFApplication, self).__init__(ec, guid)
103 return self.ec.exp_id
107 rm_list = self.get_connected(OMFNode.rtype())
108 if rm_list: return rm_list[0]
111 def stdin_hook(self, old_value, new_value):
112 self._omf_api.send_stdin(self.node.get('hostname'), new_value, self.get('appid'))
115 def add_set_hook(self):
116 attr = self._attrs["stdin"]
117 attr.set_hook = self.stdin_hook
119 def valid_connection(self, guid):
120 """ Check if the connection with the guid in parameter is possible.
121 Only meaningful connections are allowed.
123 :param guid: Guid of RM it will be connected
128 rm = self.ec.get_resource(guid)
129 if rm.rtype() not in self._authorized_connections:
130 msg = ("Connection between %s %s and %s %s refused: "
131 "An Application can be connected only to a Node" ) % \
132 (self.rtype(), self._guid, rm.rtype(), guid)
137 elif len(self.connections) != 0 :
138 msg = ("Connection between %s %s and %s %s refused: "
139 "This Application is already connected" ) % \
140 (self.rtype(), self._guid, rm.rtype(), guid)
144 msg = "Connection between %s %s and %s %s accepted" % (
145 self.rtype(), self._guid, rm.rtype(), guid)
151 """ Deploy the RM. It means nothing special for an application
152 for now (later it will be upload sources, ...)
153 It becomes DEPLOYED after getting the xmpp client.
156 self.set('xmppSlice', self.node.get('xmppSlice'))
157 self.set('xmppHost', self.node.get('xmppHost'))
158 self.set('xmppPort', self.node.get('xmppPort'))
159 self.set('xmppPassword', self.node.get('xmppPassword'))
161 if not self._omf_api :
162 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
163 self.get('xmppHost'), self.get('xmppPort'),
164 self.get('xmppPassword'), exp_id = self.exp_id)
166 if not self._omf_api :
167 msg = "Credentials are not initialzed. XMPP Connections impossible"
172 if self.get('sources'):
173 gateway = ResourceGateway.AMtoGateway[self.get('xmppHost')]
174 user = self.get('sshUser') or self.get('xmppSlice')
175 dst = user + "@"+ gateway + ":"
176 (out, err), proc = sshfuncs.rcopy(self.get('sources'), dst)
178 super(OMFApplication, self).deploy()
182 """ Start the RM. It means : Send Xmpp Message Using OMF protocol
183 to execute the application.
184 It becomes STARTED before the messages are sent (for coordination)
187 if not (self.get('appid') and self.get('path')) :
188 msg = "Application's information are not initialized"
193 if not self.get('args'):
194 self.set('args', " ")
195 if not self.get('env'):
198 # Some information to check the information in parameter
199 msg = " " + self.rtype() + " ( Guid : " + str(self._guid) +") : " + \
200 self.get('appid') + " : " + self.get('path') + " : " + \
201 self.get('args') + " : " + self.get('env')
205 self._omf_api.execute(self.node.get('hostname'),self.get('appid'), \
206 self.get('args'), self.get('path'), self.get('env'))
207 except AttributeError:
208 msg = "Credentials are not initialzed. XMPP Connections impossible"
213 super(OMFApplication, self).start()
216 """ Stop the RM. It means : Send Xmpp Message Using OMF protocol to
217 kill the application.
218 State is set to STOPPED after the message is sent.
222 self._omf_api.exit(self.node.get('hostname'),self.get('appid'))
223 except AttributeError:
224 msg = "Credentials were not initialzed. XMPP Connections impossible"
229 super(OMFApplication, self).stop()
233 """ Clean the RM at the end of the experiment and release the API.
237 OMFAPIFactory.release_api(self.get('xmppSlice'),
238 self.get('xmppHost'), self.get('xmppPort'),
239 self.get('xmppPassword'), exp_id = self.exp_id)
241 super(OMFApplication, self).release()