from nepi.execution.resource import clsinit_copy, ResourceState, reschedule_delay
from nepi.resources.ns3.ns3application import NS3BaseApplication
+from nepi.resources.ns3.ns3wrapper import SIMULATOR_UUID
+
+import os
+import time
+import threading
+
@clsinit_copy
class NS3BaseDceApplication(NS3BaseApplication):
_rtype = "abstract::ns3::DceApplication"
+ # Lock used to synchronize usage of DceManagerHelper
+ dce_manager_lock = threading.Lock()
+ # Lock used to synchronize usage of DceApplicationHelper
+ dce_application_lock = threading.Lock()
+
+ _dce_manager_helper_uuid = None
+ _dce_application_helper_uuid = None
+
@classmethod
def _register_attributes(cls):
binary = Attribute("binary",
"Semi-colon separated list of arguments for the application",
flags = Flags.Design)
+ environment = Attribute("environment",
+ "Semi-colon separated list of 'key=value' pairs to set as "
+ "DCE environment variables.",
+ flags = Flags.Design)
+
+ starttime = Attribute("StartTime",
+ "Time at which the application will start",
+ default = "+0.0ns",
+ flags = Flags.Reserved | Flags.Construct)
+
+ stoptime = Attribute("StopTime",
+ "Time at which the application will stop",
+ default = "+0.0ns",
+ flags = Flags.Reserved | Flags.Construct)
+
cls._register_attribute(binary)
cls._register_attribute(stack_size)
cls._register_attribute(arguments)
+ cls._register_attribute(environment)
+ cls._register_attribute(stoptime)
+ cls._register_attribute(starttime)
@property
def node(self):
self.error(msg)
raise RuntimeError, msg
- if nodes[0].get("enableDCE") == False:
- raise RuntimeError("DceApplication not connected to DCE enabled node")
-
return nodes[0]
-
+
+ @property
+ def dce_manager_helper_uuid(self):
+ if not self._dce_manager_helper_uuid:
+ self._dce_manager_helper_uuid = self.simulation.create("DceManagerHelper")
+ return self._dce_manager_helper_uuid
+
+ @property
+ def dce_application_helper_uuid(self):
+ if not self._dce_application_helper_uuid:
+ self._dce_application_helper_uuid = self.simulation.create("DceApplicationHelper")
+ return self._dce_application_helper_uuid
+
def _instantiate_object(self):
pass
if node.uuid not in self.connected:
self._connected.add(node.uuid)
- self.simulation.invoke(self.simulation.dce_application_helper_uuid,
- "ResetArguments")
-
- self.simulation.invoke(self.simulation.dce_application_helper_uuid,
- "SetBinary", self.get("binary"))
-
- self.simulation.invoke(self.simulation.dce_application_helper_uuid,
- "SetStackSize", self.get("stackSize"))
-
- arguments = self.get("arguments") or ""
- for arg in map(str.strip, arguments.split(";")):
- self.simulation.invoke(self.simulation.dce_application_helper_uuid,
- "AddArgument", arg)
-
- apps_uuid = self.simulation.invoke(self.simulation.dce_application_helper_uuid,
- "InstallInNode", self.node.uuid)
-
- app_uuid = self.simulation.invoke(apps_uuid, "Get", 0)
+ # Preventing concurrent access to the DceApplicationHelper
+ # from different DceApplication RMs
+ with self.dce_application_lock:
+ self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "ResetArguments")
+
+ self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "ResetEnvironment")
+
+ self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "SetBinary", self.get("binary"))
+
+ self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "SetStackSize", self.get("stackSize"))
+
+ arguments = self.get("arguments")
+ if arguments:
+ for arg in map(str.strip, arguments.split(";")):
+ self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "AddArgument", arg)
+
+ environment = self.get("environment")
+ if environment:
+ for env in map(str.strip, environment.split(";")):
+ key, val = env.split("=")
+ self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "AddEnvironment", key, val)
+
+ apps_uuid = self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "InstallInNode", self.node.uuid)
+
+ """
+ container_uuid = self.simulation.create("NodeContainer")
+ self.simulation.invoke(container_uuid, "Add", self.node.uuid)
+ apps_uuid = self.simulation.invoke(
+ self.dce_application_helper_uuid,
+ "Install", container_uuid)
+ """
+
+ self._uuid = self.simulation.invoke(apps_uuid, "Get", 0)
if self.has_changed("StartTime"):
- self.simulation.ns3_set(app_uuid, "StartTime", self.get("StartTime"))
+ self.simulation.ns3_set(self.uuid, "StartTime", self.get("StartTime"))
if self.has_changed("StopTime"):
- self.simulation.ns3_set(app_uuid, "StopTime", self.get("StopTime"))
-
- self._uuid = self.simulation.invoke(self.simulation.dce_application_helper_uuid,
- "GetDCEApplication", app_uuid)
+ self.simulation.ns3_set(self.uuid, "StopTime", self.get("StopTime"))
def do_stop(self):
if self.state == ResourceState.STARTED:
self._start_time = self.simulation.start_time
def _configure_traces(self):
- pid = self.simulation.invoke(self.uuid, "GetPid")
+ # Waiting until dce application is actually started
+ is_running = False
+ for i in xrange(200):
+ is_running = self.simulation.invoke(self.uuid, "isAppRunning")
+ is_finished = self.simulation.invoke(SIMULATOR_UUID, "isFinished")
+
+ if is_running or is_finished:
+ break
+ else:
+ time.sleep(1)
+ else:
+ if not is_running:
+ msg = " Application did not start"
+ self.error(msg)
+ raise RuntimeError
+
+ # Using lock to prevent concurrent access to the DceApplicationHelper
+ # from different DceApplication RMs
+ with self.dce_application_lock:
+ pid = self.simulation.invoke(self.dce_application_helper_uuid,
+ "GetPid", self.uuid)
+
node_id = self.simulation.invoke(self.node.uuid, "GetId")
self._trace_filename["stdout"] = "files-%s/var/log/%s/stdout" % (node_id, pid)
self._trace_filename["stderr"] = "files-%s/var/log/%s/stderr" % (node_id, pid)