+ def node(self):
+ if not self._node:
+ from nepi.resources.ns3.ns3node import NS3BaseNode
+ nodes = self.get_connected(NS3BaseNode.get_rtype())
+ if nodes: self._node = nodes[0]
+
+ return self._node
+
+ def trace(self, name, attr = TraceAttr.ALL, block = 512, offset = 0):
+ filename = self._trace_filename.get(name)
+ if not filename:
+ self.error("Can not resolve trace %s. Did you enabled it?" % name)
+ return ""
+
+ return self.simulation.trace(filename, attr, block, offset)
+
+ @property
+ def _rms_to_wait(self):
+ """ Returns the collection of ns-3 RMs that this RM needs to
+ wait for before start
+
+ This method should be overriden to wait for other ns-3
+ objects to be deployed before proceeding with the deployment
+
+ """
+ rms = set()
+ node = self.node
+ if node: rms.add(node)
+ return rms
+
+ def _instantiate_object(self):
+ if self.uuid:
+ return
+
+ kwargs = dict()
+ for attr in self._attrs.values():
+ if not ( attr.has_flag(Flags.Construct) and attr.has_changed ):
+ continue
+
+ kwargs[attr.name] = attr._value
+
+ self._uuid = self.simulation.factory(self.get_rtype(), **kwargs)
+
+ def _configure_object(self):
+ pass
+
+ def _connect_object(self):
+ node = self.node
+ if node and node.uuid not in self.connected:
+ self.simulation.invoke(node.uuid, "AggregateObject", self.uuid)
+ self._connected.add(node.uuid)
+
+ def _wait_rms(self):
+ """ Returns True if dependent RMs are not yer READY, False otherwise"""
+ for rm in self._rms_to_wait:
+ if rm.state < ResourceState.READY:
+ return True
+ return False
+
+ def do_provision(self):
+ self._instantiate_object()
+ self._connect_object()
+ self._configure_object()
+
+ self.info("Provisioning finished")
+
+ super(NS3Base, self).do_provision()