X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=src%2Fnepi%2Fresources%2Fns3%2Fns3application.py;h=681e1a11c870fa39e950a96fa992638561805f8c;hb=6285ca51026efb69642eea9dfc7c480e722d84a9;hp=302e12898da8f43155bd86c5a5456b44ebb743be;hpb=0cff9603cef884887e19b6f594745284e54a2b19;p=nepi.git

diff --git a/src/nepi/resources/ns3/ns3application.py b/src/nepi/resources/ns3/ns3application.py
index 302e1289..681e1a11 100644
--- a/src/nepi/resources/ns3/ns3application.py
+++ b/src/nepi/resources/ns3/ns3application.py
@@ -3,9 +3,8 @@
 #    Copyright (C) 2014 INRIA
 #
 #    This program is free software: you can redistribute it and/or modify
-#    it under the terms of the GNU General Public License as published by
-#    the Free Software Foundation, either version 3 of the License, or
-#    (at your option) any later version.
+#    it under the terms of the GNU General Public License version 2 as
+#    published by the Free Software Foundation;
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -17,25 +16,31 @@
 #
 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
 
-from nepi.execution.resource import clsinit_copy, ResourceState, \
-        reschedule_delay
+from nepi.execution.resource import clsinit_copy, ResourceState
 from nepi.resources.ns3.ns3base import NS3Base
 
 @clsinit_copy
 class NS3BaseApplication(NS3Base):
     _rtype = "abstract::ns3::Application"
 
+    def __init__(self, ec, guid):
+        super(NS3BaseApplication, self).__init__(ec, guid)
+        self._node = None
+ 
     @property
     def node(self):
-        from nepi.resources.ns3.ns3node import NS3BaseNode
-        nodes = self.get_connected(NS3BaseNode.get_rtype())
+        if not self._node:
+            from nepi.resources.ns3.ns3node import NS3BaseNode
+            nodes = self.get_connected(NS3BaseNode.get_rtype())
 
-        if not nodes: 
-            msg = "Application not connected to node"
-            self.error(msg)
-            raise RuntimeError, msg
+            if not nodes: 
+                msg = "Application not connected to node"
+                self.error(msg)
+                raise RuntimeError(msg)
 
-        return nodes[0]
+            self._node = nodes[0]
+
+        return self._node
 
     @property
     def _rms_to_wait(self):
@@ -59,7 +64,7 @@ class NS3BaseApplication(NS3Base):
     def do_start(self):
         if self.simulation.state < ResourceState.STARTED:
             self.debug("---- RESCHEDULING START ----" )
-            self.ec.schedule(reschedule_delay, self.start)
+            self.ec.schedule(self.reschedule_delay, self.start)
         else:
             super(NS3BaseApplication, self).do_start()
             self._start_time = self.simulation.start_time
@@ -67,10 +72,19 @@ class NS3BaseApplication(NS3Base):
     @property
     def state(self):
         if self._state == ResourceState.STARTED:
-            is_running = self.simulation.invoke(self.uuid, "isAppRunning")
-            
-            if not is_running:
-                self.set_stopped()
+            try:
+                is_running = self.simulation.invoke(self.uuid, "isAppRunning")
+                
+                if not is_running:
+                    self.set_stopped()
+            except:
+                msg = "Application failed. Can not retrieve state"
+                out = ""
+
+                import traceback
+                err = traceback.format_exc()
+                self.error(msg, out, err)
+                self.do_fail()
 
         return self._state