+#
+# NEPI, a framework to manage network experiments
+# 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.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+
+import os
+import time
+import threading
+
+class NS3DceHelper(object):
+ def __init__(self, simulation):
+ self.simulation = simulation
+
+ # Lock used to synchronize usage of DceManagerHelper
+ self._dce_manager_lock = threading.Lock()
+ # Lock used to synchronize usage of DceApplicationHelper
+ self._dce_application_lock = threading.Lock()
+
+ self._dce_manager_uuid = None
+ self._dce_application_uuid = None
+
+ @property
+ def dce_manager_uuid(self):
+ if not self._dce_manager_uuid:
+ self._dce_manager_uuid = \
+ self.simulation.create("DceManagerHelper")
+
+ return self._dce_manager_uuid
+
+ @property
+ def dce_application_uuid(self):
+ if not self._dce_application_uuid:
+ self._dce_application_uuid = \
+ self.simulation.create("DceApplicationHelper")
+
+ return self._dce_application_uuid
+
+ @property
+ def dce_manager_lock(self):
+ return self._dce_manager_lock
+
+ @property
+ def dce_application_lock(self):
+ return self._dce_application_lock
+