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.node import OMFNode
26 from nepi.resources.omf.omf_api import OMFAPIFactory
28 from nepi.util import sshfuncs
31 class OMFApplication(OMFResource):
33 .. class:: Class Args :
35 :param ec: The Experiment controller
36 :type ec: ExperimentController
37 :param guid: guid of the RM
39 :param creds: Credentials to communicate with the rm (XmppClient)
43 _rtype = "OMFApplication"
44 _authorized_connections = ["OMFNode"]
47 def _register_attributes(cls):
48 """ Register the attributes of an OMF application
51 appid = Attribute("appid", "Name of the application")
52 path = Attribute("path", "Path of the application")
53 args = Attribute("args", "Argument of the application")
54 env = Attribute("env", "Environnement variable of the application")
55 stdin = Attribute("stdin", "Input of the application", default = "")
56 sources = Attribute("sources", "Sources of the application",
57 flags = Flags.ExecReadOnly)
58 sshuser = Attribute("sshUser", "user to connect with ssh",
59 flags = Flags.ExecReadOnly)
60 sshkey = Attribute("sshKey", "key to use for ssh",
61 flags = Flags.ExecReadOnly)
62 cls._register_attribute(appid)
63 cls._register_attribute(path)
64 cls._register_attribute(args)
65 cls._register_attribute(env)
66 cls._register_attribute(stdin)
67 cls._register_attribute(sources)
68 cls._register_attribute(sshuser)
69 cls._register_attribute(sshkey)
71 def __init__(self, ec, guid):
73 :param ec: The Experiment controller
74 :type ec: ExperimentController
75 :param guid: guid of the RM
77 :param creds: Credentials to communicate with the rm (XmppClient for OMF)
81 super(OMFApplication, self).__init__(ec, guid)
100 rm_list = self.get_connected(OMFNode.get_rtype())
101 if rm_list: return rm_list[0]
104 def stdin_hook(self, old_value, new_value):
105 """ Set a hook to the stdin attribute in order to send a message at each time
106 the value of this parameter is changed
109 self._omf_api.send_stdin(self.node.get('hostname'), new_value, self.get('appid'))
112 def add_set_hook(self):
113 """ Initialize the hooks
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.get_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.get_rtype(), self._guid, rm.get_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.get_rtype(), self._guid, rm.get_rtype(), guid)
146 msg = "Connection between %s %s and %s %s accepted" % (
147 self.get_rtype(), self._guid, rm.get_rtype(), guid)
153 """ Deploy the RM. It means nothing special for an application
154 for now (later it will be upload sources, ...)
155 It becomes DEPLOYED after getting the xmpp client.
159 self.set('xmppSlice',self.node.get('xmppSlice'))
160 self.set('xmppHost',self.node.get('xmppHost'))
161 self.set('xmppPort',self.node.get('xmppPort'))
162 self.set('xmppPassword',self.node.get('xmppPassword'))
164 if not (self.get('xmppSlice') and self.get('xmppHost')
165 and self.get('xmppPort') and self.get('xmppPassword')):
166 msg = "Credentials are not initialzed. XMPP Connections impossible"
168 raise RuntimeError, msg
170 if not self._omf_api :
171 self._omf_api = OMFAPIFactory.get_api(self.get('xmppSlice'),
172 self.get('xmppHost'), self.get('xmppPort'),
173 self.get('xmppPassword'), exp_id = self.exp_id)
175 if self.get('sources'):
176 gateway = ResourceGateway.AMtoGateway[self.get('xmppHost')]
177 user = self.get('sshUser') or self.get('xmppSlice')
178 dst = user + "@"+ gateway + ":"
179 (out, err), proc = sshfuncs.rcopy(self.get('sources'), dst)
181 super(OMFApplication, self).do_deploy()
184 """ Start the RM. It means : Send Xmpp Message Using OMF protocol
185 to execute the application.
186 It becomes STARTED before the messages are sent (for coordination)
189 if not (self.get('appid') and self.get('path')) :
190 msg = "Application's information are not initialized"
192 raise RuntimeError, msg
194 if not self.get('args'):
195 self.set('args', " ")
196 if not self.get('env'):
199 # Some information to check the information in parameter
200 msg = " " + self.get_rtype() + " ( Guid : " + str(self._guid) +") : " + \
201 self.get('appid') + " : " + self.get('path') + " : " + \
202 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'))
208 super(OMFApplication, self).do_start()
211 """ Stop the RM. It means : Send Xmpp Message Using OMF protocol to
212 kill the application.
213 State is set to STOPPED after the message is sent.
217 self._omf_api.exit(self.node.get('hostname'),self.get('appid'))
218 super(OMFApplication, self).do_stop()
220 def do_release(self):
221 """ Clean the RM at the end of the experiment and release the API.
225 OMFAPIFactory.release_api(self.get('xmppSlice'),
226 self.get('xmppHost'), self.get('xmppPort'),
227 self.get('xmppPassword'), exp_id = self.exp_id)
229 super(OMFApplication, self).do_release()