from constants import TESTBED_ID
from nepi.core import testbed_impl
from nepi.core.attributes import Attribute
-from nepi.util.constants import AF_INET, AF_INET6
import os
+import sys
+import threading
class TestbedInstance(testbed_impl.TestbedInstance):
def __init__(self, testbed_version):
self._ns3 = None
self._home_directory = None
self._traces = dict()
+ self._simulator_thread = None
+ self._condition = None
@property
def home_directory(self):
get_attribute_value("homeDirectory")
self._ns3 = self._load_ns3_module()
- def do_configure(self):
- # configure addressess
- for guid, addresses in self._add_address.iteritems():
- element = self._elements[guid]
- for address in addresses:
- (family, address, netprefix, broadcast) = address
- if family == AF_INET:
- pass
- # TODO!!!
- # configure routes
- for guid, routes in self._add_route.iteritems():
- element = self._elements[guid]
- for route in routes:
- (destination, netprefix, nexthop) = route
- # TODO!!
- """
- context = self.server.modules.ns3
- ipv4 = self._object
- for interface in self._interface2addr:
- ifindex = ipv4.AddInterface(interface._object)
- for addr in self._interface2addr[interface]:
- inaddr = context.Ipv4InterfaceAddress(
- context.Ipv4Address(
- addr.get_attribute("Address").value),
- context.Ipv4Mask(
- addr.get_attribute("NetPrefix").value))
- ipv4.AddAddress(ifindex, inaddr)
- ipv4.SetMetric(ifindex, 1)
- ipv4.SetUp(ifindex)
- self._interface_addrs[addr] = inaddr
- self._interfaces[interface] = ifindex
- for entry in self.get_node().routing_table.get_entries(self._af):
- self._rt_add(entry)
-
- def _rt_add(self, entry):
- # Called both at install-time (by NS3Ipv4Stack.post_install) and at
- # run-time (by RoutingTable.add_entry).
- context = self.server.modules.ns3
- ifindex = self._interfaces[entry.interface]
- prefixlen = entry.prefixlen
- # print "rt_add %s %s %s %d"% (prefix, prefixlen, entry.nexthop, ifindex)
- if entry.nexthop:
- self._static_routing.AddNetworkRouteTo(
- context.Ipv4Address(entry.prefix.address),
- context.Ipv4Mask(entry.mask.address),
- context.Ipv4Address(entry.nexthop.address),
- ifindex)
- else:
- self._static_routing.AddNetworkRouteTo(
- context.Ipv4Address(entry.prefix.address),
- context.Ipv4Mask(entry.mask.address),
- ifindex)
- """
+ def start(self):
+ super(TestbedInstance, self).start()
+ self._condition = threading.Condition()
+ self._simulator_thread = threading.Thread(target = self._simulator_run,
+ args = [self._condition])
+ self._simulator_thread.start()
def set(self, time, guid, name, value):
super(TestbedInstance, self).set(time, guid, name, value)
# TODO: take on account schedule time for the task
- factory_id = self._crerate[guid]
element = self._elements[guid]
- TypeId = self.ns3.TypeId()
- typeid = TypeId.LookupByName(factory_id)
- info = TypeId.AttributeInfo()
- if not typeid.LookupAttributeByName(name, info):
- raise RuntimeError("Attribute %s doesn't belong to element %s" \
- % (name, factory_id))
- value = str(value)
- if isinstance(value, bool):
- value = value.lower()
- ns3_value = info.checker.Create()
- ns3_value.DeserializeFromString(value, checker)
+ ns3_value = self._to_ns3_value(guid, name, value)
element.SetAttribute(name, ns3_value)
def get(self, time, guid, name):
TypeId = self.ns3.TypeId()
typeid = TypeId.LookupByName(factory_id)
info = TypeId.AttributeInfo()
- if not typeid.LookupAttributeByName(name, info):
- raise RuntimeError("Attribute %s doesn't belong to element %s" \
- % (name, factory_id))
+ if not typeid or not typeid.LookupAttributeByName(name, info):
+ try:
+ # Try design-time attributes
+ return self.box_get(time, guid, name)
+ except KeyError, AttributeError:
+ return None
checker = info.checker
ns3_value = checker.Create()
element = self._elements[guid]
return value == "true"
return value
- def action(self, time, guid, action):
- raise NotImplementedError
+ def get_route(self, guid, index, attribute):
+ # TODO: fetch real data from ns3
+ try:
+ return self.box_get_route(guid, int(index), attribute)
+ except KeyError, AttributeError:
+ return None
- def trace(self, guid, trace_id):
- fd = open("%s" % self.trace_filename(guid, trace_id), "r")
- content = fd.read()
- fd.close()
- return content
+ def get_address(self, guid, index, attribute='Address'):
+ # TODO: fetch real data from ns3
+ try:
+ return self.box_get_address(guid, int(index), attribute)
+ except KeyError, AttributeError:
+ return None
- def shutdown(self):
- for element in self._elements.values():
- element.destroy()
+
+ def action(self, time, guid, action):
+ raise NotImplementedError
def trace_filename(self, guid, trace_id):
# TODO: Need to be defined inside a home!!!! with and experiment id_code
- filename = self._trace_filenames[guid][trace_id]
+ filename = self._traces[guid][trace_id]
return os.path.join(self.home_directory, filename)
def follow_trace(self, guid, trace_id, filename):
self._traces[guid] = dict()
self._traces[guid][trace_id] = filename
+ def shutdown(self):
+ for element in self._elements.values():
+ element = None
+
+ def _simulator_run(self, condition):
+ # Run simulation
+ self.ns3.Simulator.Run()
+ # Signal condition on simulation end to notify waiting threads
+ condition.acquire()
+ condition.notifyAll()
+ condition.release()
+
+ def _schedule_event(self, condition, func, *args):
+ """Schedules event on running experiment"""
+ def execute_event(condition, has_event_occurred, func, *args):
+ # exec func
+ func(*args)
+ # flag event occured
+ has_event_occurred[0] = True
+ # notify condition indicating attribute was set
+ condition.acquire()
+ condition.notifyAll()
+ condition.release()
+
+ # contextId is defined as general context
+ contextId = long(0xffffffff)
+ # delay 0 means that the event is expected to execute inmediately
+ delay = self.ns3.Seconds(0)
+ # flag to indicate that the event occured
+ # because bool is an inmutable object in python, in order to create a
+ # bool flag, a list is used as wrapper
+ has_event_occurred = [False]
+ condition.acquire()
+ if not self.ns3.Simulator.IsFinished():
+ self.ns3.Simulator.ScheduleWithContext(contextId, delay, execute_event,
+ condition, has_event_occurred, func, *args)
+ while not has_event_occurred[0] and not self.ns3.Simulator.IsFinished():
+ condition.wait()
+ condition.release()
+ if not has_event_occurred[0]:
+ raise RuntimeError('Event could not be scheduled : %s %s ' \
+ % (repr(func), repr(args)))
+
+ def _to_ns3_value(self, guid, name, value):
+ factory_id = self._create[guid]
+ TypeId = self.ns3.TypeId()
+ typeid = TypeId.LookupByName(factory_id)
+ info = TypeId.AttributeInfo()
+ if not typeid.LookupAttributeByName(name, info):
+ raise RuntimeError("Attribute %s doesn't belong to element %s" \
+ % (name, factory_id))
+ str_value = str(value)
+ if isinstance(value, bool):
+ str_value = str_value.lower()
+ checker = info.checker
+ ns3_value = checker.Create()
+ ns3_value.DeserializeFromString(str_value, checker)
+ return ns3_value
+
def _load_ns3_module(self):
import ctypes
import imp
- bindings = self._attributes.get_attribute_value("ns3Bindings")
- libfile = self._attributes.get_attribute_value("ns3Library")
simu_impl_type = self._attributes.get_attribute_value(
"SimulatorImplementationType")
checksum = self._attributes.get_attribute_value("ChecksumEnabled")
+ bindings = os.environ["NEPI_NS3BINDINGS"] \
+ if "NEPI_NS3BINDINGS" in os.environ else None
+ libfile = os.environ["NEPI_NS3LIBRARY"] \
+ if "NEPI_NS3LIBRARY" in os.environ else None
+
if libfile:
ctypes.CDLL(libfile, ctypes.RTLD_GLOBAL)
factory_id = self._create[guid]
TypeId = self.ns3.TypeId()
typeid = TypeId.LookupByName(factory_id)
- for name, value in params:
+ for name, value in params.iteritems():
info = self.ns3.TypeId.AttributeInfo()
typeid.LookupAttributeByName(name, info)
if info.flags & TypeId.ATTR_CONSTRUCT == TypeId.ATTR_CONSTRUCT:
git://git.onelab.eu / nepi.git / blobdiff