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, failtrap
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)
152 """ Deploy the RM. It means nothing special for an application
153 for now (later it will be upload sources, ...)
154 It becomes DEPLOYED after getting the xmpp client.
157 self.set('xmppSlice', self.node.get('xmppSlice'))
158 self.set('xmppHost', self.node.get('xmppHost'))
159 self.set('xmppPort', self.node.get('xmppPort'))
160 self.set('xmppPassword', self.node.get('xmppPassword'))
162 if not self._omf_api :
163 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
164 self.get('xmppHost'), self.get('xmppPort'),
165 self.get('xmppPassword'), exp_id = self.exp_id)
167 if not self._omf_api :
168 msg = "Credentials are not initialzed. XMPP Connections impossible"
170 raise RuntimeError, msg
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"
190 raise RuntimeError, msg
192 if not self.get('args'):
193 self.set('args', " ")
194 if not self.get('env'):
197 # Some information to check the information in parameter
198 msg = " " + self.rtype() + " ( Guid : " + str(self._guid) +") : " + \
199 self.get('appid') + " : " + self.get('path') + " : " + \
200 self.get('args') + " : " + self.get('env')
204 self._omf_api.execute(self.node.get('hostname'),self.get('appid'), \
205 self.get('args'), self.get('path'), self.get('env'))
206 except AttributeError:
207 msg = "Credentials are not initialzed. XMPP Connections impossible"
211 super(OMFApplication, self).start()
215 """ Stop the RM. It means : Send Xmpp Message Using OMF protocol to
216 kill the application.
217 State is set to STOPPED after the message is sent.
221 self._omf_api.exit(self.node.get('hostname'),self.get('appid'))
222 except AttributeError:
223 msg = "Credentials were not initialzed. XMPP Connections impossible"
227 super(OMFApplication, self).stop()
231 """ Clean the RM at the end of the experiment and release the API.
236 OMFAPIFactory.release_api(self.get('xmppSlice'),
237 self.get('xmppHost'), self.get('xmppPort'),
238 self.get('xmppPassword'), exp_id = self.exp_id)
241 err = traceback.format_exc()
244 super(OMFApplication, self).release()