src/nepi/testbeds/netns/execute.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 from constants import TESTBED_ID
   5 from nepi.core import testbed_impl
   6 from nepi.util.constants import TIME_NOW
   7 import os
   8
   9 class TestbedController(testbed_impl.TestbedController):
  10     def __init__(self, testbed_version):
  11         super(TestbedController, self).__init__(TESTBED_ID, testbed_version)
  12         self._netns = None
  13         self._home_directory = None
  14         self._traces = dict()
  15
  16     @property
  17     def home_directory(self):
  18         return self._home_directory
  19
  20     @property
  21     def netns(self):
  22         return self._netns
  23
  24     def do_setup(self):
  25         self._home_directory = self._attributes.\
  26             get_attribute_value("homeDirectory")
  27         self._netns = self._load_netns_module()
  28         super(TestbedController, self).do_setup()
  29
  30     def set(self, guid, name, value, time = TIME_NOW):
  31         super(TestbedController, self).set(guid, name, value, time)
  32         # TODO: take on account schedule time for the task
  33         element = self._elements.get(guid)
  34         if element:
  35             setattr(element, name, value)
  36
  37     def get(self, guid, name, time = TIME_NOW):
  38         value = super(TestbedController, self).get(guid, name, time)
  39         # TODO: take on account schedule time for the task
  40         factory_id = self._create[guid]
  41         factory = self._factories[factory_id]
  42         if factory.box_attributes.is_attribute_design_only(name):
  43             return value
  44         element = self._elements.get(guid)
  45         try:
  46             return getattr(element, name)
  47         except KeyError, AttributeError:
  48             return value
  49
  50     def action(self, time, guid, action):
  51         raise NotImplementedError
  52
  53     def shutdown(self):
  54         for trace in self._traces.values():
  55             trace.close()
  56         for element in self._elements.values():
  57             element.destroy()
  58
  59     def trace_filename(self, guid, trace_id):
  60         # TODO: Need to be defined inside a home!!!! with and experiment id_code
  61         return os.path.join(self.home_directory, "%d_%s" % (guid, trace_id))
  62
  63     def follow_trace(self, trace_id, trace):
  64         self._traces[trace_id] = trace
  65
  66     def _load_netns_module(self):
  67         # TODO: Do something with the configuration!!!
  68         import sys
  69         __import__("netns")
  70         netns_mod = sys.modules["netns"]
  71         # enable debug
  72         enable_debug = self._attributes.get_attribute_value("enableDebug")
  73         if enable_debug:
  74             netns_mod.environ.set_log_level(netns_mod.environ.LOG_DEBUG)
  75         return netns_mod
  76