2 # -*- coding: utf-8 -*-
4 from nepi.core.attributes import Attribute, AttributesMap
5 from nepi.util import validation
6 from nepi.util.constants import ApplicationStatus as AS, TestbedStatus as TS, TIME_NOW, DeploymentConfiguration as DC
7 from nepi.util.parser._xml import XmlExperimentParser
19 ATTRIBUTE_PATTERN_BASE = re.compile(r"\{#\[(?P<label>[-a-zA-Z0-9._]*)\](?P<expr>(?P<component>\.addr\[[0-9]+\]|\.route\[[0-9]+\]|\.trace\[[-a-zA-Z0-9._]+\])?.\[(?P<attribute>[-a-zA-Z0-9._]*)\])#}")
20 ATTRIBUTE_PATTERN_GUID_SUB = r"{#[%(guid)s]%(expr)s#}"
21 COMPONENT_PATTERN = re.compile(r"(?P<kind>[a-z]*)\[(?P<index>.*)\]")
23 def _undefer(deferred):
24 if hasattr(deferred, '_get'):
25 return deferred._get()
30 class TestbedController(object):
31 def __init__(self, testbed_id, testbed_version):
32 self._testbed_id = testbed_id
33 self._testbed_version = testbed_version
37 return self._testbed_id
40 def testbed_version(self):
41 return self._testbed_version
45 raise NotImplementedError
47 def defer_configure(self, name, value):
48 """Instructs setting a configuartion attribute for the testbed instance"""
49 raise NotImplementedError
51 def defer_create(self, guid, factory_id):
52 """Instructs creation of element """
53 raise NotImplementedError
55 def defer_create_set(self, guid, name, value):
56 """Instructs setting an initial attribute on an element"""
57 raise NotImplementedError
59 def defer_factory_set(self, guid, name, value):
60 """Instructs setting an attribute on a factory"""
61 raise NotImplementedError
63 def defer_connect(self, guid1, connector_type_name1, guid2,
64 connector_type_name2):
65 """Instructs creation of a connection between the given connectors"""
66 raise NotImplementedError
68 def defer_cross_connect(self,
69 guid, connector_type_name,
70 cross_guid, cross_testbed_guid,
71 cross_testbed_id, cross_factory_id,
72 cross_connector_type_name):
74 Instructs creation of a connection between the given connectors
75 of different testbed instances
77 raise NotImplementedError
79 def defer_add_trace(self, guid, trace_id):
80 """Instructs the addition of a trace"""
81 raise NotImplementedError
83 def defer_add_address(self, guid, address, netprefix, broadcast):
84 """Instructs the addition of an address"""
85 raise NotImplementedError
87 def defer_add_route(self, guid, destination, netprefix, nexthop, metric = 0):
88 """Instructs the addition of a route"""
89 raise NotImplementedError
92 """After do_setup the testbed initial configuration is done"""
93 raise NotImplementedError
97 After do_create all instructed elements are created and
100 raise NotImplementedError
102 def do_connect_init(self):
104 After do_connect_init all internal connections between testbed elements
107 raise NotImplementedError
109 def do_connect_compl(self):
111 After do_connect all internal connections between testbed elements
114 raise NotImplementedError
116 def do_preconfigure(self):
118 Done just before resolving netrefs, after connection, before cross connections,
119 useful for early stages of configuration, for setting up stuff that might be
120 required for netref resolution.
122 raise NotImplementedError
124 def do_configure(self):
125 """After do_configure elements are configured"""
126 raise NotImplementedError
128 def do_prestart(self):
129 """Before do_start elements are prestart-configured"""
130 raise NotImplementedError
132 def do_cross_connect_init(self, cross_data):
134 After do_cross_connect_init initiation of all external connections
135 between different testbed elements is performed
137 raise NotImplementedError
139 def do_cross_connect_compl(self, cross_data):
141 After do_cross_connect_compl completion of all external connections
142 between different testbed elements is performed
144 raise NotImplementedError
147 raise NotImplementedError
150 raise NotImplementedError
154 On testbed recovery (if recovery is a supported policy), the controller
155 instance will be re-created and the following sequence invoked:
158 defer_X - programming the testbed with persisted execution values
159 (not design values). Execution values (ExecImmutable attributes)
160 should be enough to recreate the testbed's state.
162 <cross-connection methods>
164 Start will not be called, and after cross connection invocations,
165 the testbed is supposed to be fully functional again.
167 raise NotImplementedError
169 def set(self, guid, name, value, time = TIME_NOW):
170 raise NotImplementedError
172 def get(self, guid, name, time = TIME_NOW):
173 raise NotImplementedError
175 def get_route(self, guid, index, attribute):
179 guid: guid of box to query
180 index: number of routing entry to fetch
181 attribute: one of Destination, NextHop, NetPrefix
183 raise NotImplementedError
185 def get_address(self, guid, index, attribute='Address'):
189 guid: guid of box to query
190 index: number of inteface to select
191 attribute: one of Address, NetPrefix, Broadcast
193 raise NotImplementedError
195 def get_attribute_list(self, guid, filter_flags = None, exclude = False):
196 raise NotImplementedError
198 def get_factory_id(self, guid):
199 raise NotImplementedError
201 def action(self, time, guid, action):
202 raise NotImplementedError
204 def status(self, guid):
205 raise NotImplementedError
207 def testbed_status(self):
208 raise NotImplementedError
210 def trace(self, guid, trace_id, attribute='value'):
211 raise NotImplementedError
213 def traces_info(self):
214 """ dictionary of dictionaries:
220 filesize = size in bytes,
224 raise NotImplementedError
227 raise NotImplementedError
229 class ExperimentController(object):
230 def __init__(self, experiment_xml, root_dir):
231 self._experiment_design_xml = experiment_xml
232 self._experiment_execute_xml = None
233 self._testbeds = dict()
234 self._deployment_config = dict()
235 self._netrefs = collections.defaultdict(set)
236 self._testbed_netrefs = collections.defaultdict(set)
237 self._cross_data = dict()
238 self._root_dir = root_dir
239 self._netreffed_testbeds = set()
240 self._guids_in_testbed_cache = dict()
241 self._failed_testbeds = set()
242 self._started_time = None
243 self._stopped_time = None
245 self._logger = logging.getLogger('nepi.core.execute')
246 level = logging.ERROR
247 if os.environ.get("NEPI_CONTROLLER_LOGLEVEL",
248 DC.ERROR_LEVEL) == DC.DEBUG_LEVEL:
249 level = logging.DEBUG
250 self._logger.setLevel(level)
252 if experiment_xml is None and root_dir is not None:
254 self.load_experiment_xml()
255 self.load_execute_xml()
257 self.persist_experiment_xml()
260 def experiment_design_xml(self):
261 return self._experiment_design_xml
264 def experiment_execute_xml(self):
265 return self._experiment_execute_xml
268 def started_time(self):
269 return self._started_time
272 def stopped_time(self):
273 return self._stopped_time
278 for testbed_guid in self._testbeds.keys():
279 _guids = self._guids_in_testbed(testbed_guid)
284 def persist_experiment_xml(self):
285 xml_path = os.path.join(self._root_dir, "experiment-design.xml")
286 f = open(xml_path, "w")
287 f.write(self._experiment_design_xml)
290 def persist_execute_xml(self):
291 xml_path = os.path.join(self._root_dir, "experiment-execute.xml")
292 f = open(xml_path, "w")
293 f.write(self._experiment_execute_xml)
296 def load_experiment_xml(self):
297 xml_path = os.path.join(self._root_dir, "experiment-design.xml")
298 f = open(xml_path, "r")
299 self._experiment_design_xml = f.read()
302 def load_execute_xml(self):
303 xml_path = os.path.join(self._root_dir, "experiment-execute.xml")
304 f = open(xml_path, "r")
305 self._experiment_execute_xml = f.read()
308 def trace(self, guid, trace_id, attribute='value'):
309 testbed = self._testbed_for_guid(guid)
311 return testbed.trace(guid, trace_id, attribute)
312 raise RuntimeError("No element exists with guid %d" % guid)
314 def traces_info(self):
316 for guid, testbed in self._testbeds.iteritems():
317 tinfo = testbed.traces_info()
319 traces_info[guid] = testbed.traces_info()
323 def _parallel(callables):
326 @functools.wraps(callable)
327 def wrapped(*p, **kw):
331 logging.exception("Exception occurred in asynchronous thread:")
332 excs.append(sys.exc_info())
334 threads = [ threading.Thread(target=wrap(callable)) for callable in callables ]
335 for thread in threads:
337 for thread in threads:
340 eTyp, eVal, eLoc = exc
341 raise eTyp, eVal, eLoc
344 self._started_time = time.time()
347 def _start(self, recover = False):
348 parser = XmlExperimentParser()
351 xml = self._experiment_execute_xml
353 xml = self._experiment_design_xml
354 data = parser.from_xml_to_data(xml)
356 # instantiate testbed controllers
357 to_recover, to_restart = self._init_testbed_controllers(data, recover)
358 all_restart = set(to_restart)
361 # persist testbed connection data, for potential recovery
362 self._persist_testbed_proxies()
364 # recover recoverable controllers
365 for guid in to_recover:
367 self._testbeds[guid].do_setup()
368 self._testbeds[guid].recover()
370 self._logger.exception("During recovery of testbed %s", guid)
373 self._failed_testbeds.add(guid)
375 def steps_to_configure(self, allowed_guids):
376 # perform setup in parallel for all test beds,
377 # wait for all threads to finish
379 self._logger.debug("ExperimentController: Starting parallel do_setup")
380 self._parallel([testbed.do_setup
381 for guid,testbed in self._testbeds.iteritems()
382 if guid in allowed_guids])
384 # perform create-connect in parallel, wait
385 # (internal connections only)
386 self._logger.debug("ExperimentController: Starting parallel do_create")
387 self._parallel([testbed.do_create
388 for guid,testbed in self._testbeds.iteritems()
389 if guid in allowed_guids])
391 self._logger.debug("ExperimentController: Starting parallel do_connect_init")
392 self._parallel([testbed.do_connect_init
393 for guid,testbed in self._testbeds.iteritems()
394 if guid in allowed_guids])
396 self._logger.debug("ExperimentController: Starting parallel do_connect_fin")
397 self._parallel([testbed.do_connect_compl
398 for guid,testbed in self._testbeds.iteritems()
399 if guid in allowed_guids])
401 self._logger.debug("ExperimentController: Starting parallel do_preconfigure")
402 self._parallel([testbed.do_preconfigure
403 for guid,testbed in self._testbeds.iteritems()
404 if guid in allowed_guids])
407 steps_to_configure(self, to_restart)
409 if self._netreffed_testbeds:
410 self._logger.debug("ExperimentController: Resolving netreffed testbeds")
411 # initally resolve netrefs
412 self.do_netrefs(data, fail_if_undefined=False)
414 # rinse and repeat, for netreffed testbeds
415 netreffed_testbeds = set(self._netreffed_testbeds)
417 to_recover, to_restart = self._init_testbed_controllers(data, recover)
418 all_restart.update(to_restart)
421 # persist testbed connection data, for potential recovery
422 self._persist_testbed_proxies()
424 # recover recoverable controllers
425 for guid in to_recover:
427 self._testbeds[guid].do_setup()
428 self._testbeds[guid].recover()
430 self._logger.exception("During recovery of testbed %s", guid)
433 self._failed_testbeds.add(guid)
435 # configure dependant testbeds
436 steps_to_configure(self, to_restart)
438 all_restart = [ self._testbeds[guid] for guid in all_restart ]
440 # final netref step, fail if anything's left unresolved
441 self._logger.debug("ExperimentController: Resolving do_netrefs")
442 self.do_netrefs(data, fail_if_undefined=False)
444 # Only now, that netref dependencies have been solve, it is safe to
445 # program cross_connections
446 self._logger.debug("ExperimentController: Programming testbed cross-connections")
447 self._program_testbed_cross_connections(data)
449 # perform do_configure in parallel for al testbeds
450 # (it's internal configuration for each)
451 self._logger.debug("ExperimentController: Starting parallel do_configure")
452 self._parallel([testbed.do_configure
453 for testbed in all_restart])
457 #print >>sys.stderr, "DO IT"
461 # cross-connect (cannot be done in parallel)
462 self._logger.debug("ExperimentController: Starting cross-connect")
463 for guid, testbed in self._testbeds.iteritems():
464 cross_data = self._get_cross_data(guid)
465 testbed.do_cross_connect_init(cross_data)
466 for guid, testbed in self._testbeds.iteritems():
467 cross_data = self._get_cross_data(guid)
468 testbed.do_cross_connect_compl(cross_data)
472 # Last chance to configure (parallel on all testbeds)
473 self._logger.debug("ExperimentController: Starting parallel do_prestart")
474 self._parallel([testbed.do_prestart
475 for testbed in all_restart])
477 # final netref step, fail if anything's left unresolved
478 self.do_netrefs(data, fail_if_undefined=True)
483 # update execution xml with execution-specific values
484 # TODO: BUG! BUggy code! cant stand all serializing all attribute values (ej: tun_key which is non ascci)"
485 self._update_execute_xml()
486 self.persist_execute_xml()
488 # start experiment (parallel start on all testbeds)
489 self._logger.debug("ExperimentController: Starting parallel do_start")
490 self._parallel([testbed.start
491 for testbed in all_restart])
495 def _clear_caches(self):
496 # Cleaning cache for safety.
497 self._guids_in_testbed_cache = dict()
499 def _persist_testbed_proxies(self):
500 TRANSIENT = (DC.RECOVER,)
502 # persist access configuration for all testbeds, so that
503 # recovery mode can reconnect to them if it becomes necessary
504 conf = ConfigParser.RawConfigParser()
505 for testbed_guid, testbed_config in self._deployment_config.iteritems():
506 testbed_guid = str(testbed_guid)
507 conf.add_section(testbed_guid)
508 for attr in testbed_config.get_attribute_list():
509 if attr not in TRANSIENT:
510 value = testbed_config.get_attribute_value(attr)
511 if value is not None:
512 conf.set(testbed_guid, attr, value)
514 f = open(os.path.join(self._root_dir, 'deployment_config.ini'), 'w')
518 def _load_testbed_proxies(self):
520 Attribute.STRING : 'get',
521 Attribute.BOOL : 'getboolean',
522 Attribute.ENUM : 'get',
523 Attribute.DOUBLE : 'getfloat',
524 Attribute.INTEGER : 'getint',
527 TRANSIENT = (DC.RECOVER,)
529 # deferred import because proxy needs
530 # our class definitions to define proxies
531 import nepi.util.proxy as proxy
533 conf = ConfigParser.RawConfigParser()
534 conf.read(os.path.join(self._root_dir, 'deployment_config.ini'))
535 for testbed_guid in conf.sections():
536 testbed_config = proxy.AccessConfiguration()
537 testbed_guid = str(testbed_guid)
538 for attr in testbed_config.get_attribute_list():
539 if attr not in TRANSIENT:
540 getter = getattr(conf, TYPEMAP.get(
541 testbed_config.get_attribute_type(attr),
544 value = getter(testbed_guid, attr)
545 testbed_config.set_attribute_value(attr, value)
546 except ConfigParser.NoOptionError:
550 def _unpersist_testbed_proxies(self):
552 os.remove(os.path.join(self._root_dir, 'deployment_config.ini'))
554 # Just print exceptions, this is just cleanup
555 self._logger.exception("Loading testbed configuration")
557 def _update_execute_xml(self):
559 # For all elements in testbed,
560 # - gather immutable execute-readable attribuets lists
562 # Generate new design description from design xml
563 # (Wait for attributes lists - implicit syncpoint)
565 # For all elements in testbed,
566 # - gather all immutable execute-readable attribute
567 # values, asynchronously
568 # (Wait for attribute values - implicit syncpoint)
570 # For all elements in testbed,
571 # - inject non-None values into new design
572 # Generate execute xml from new design
574 attribute_lists = dict(
575 (testbed_guid, collections.defaultdict(dict))
576 for testbed_guid in self._testbeds
579 for testbed_guid, testbed in self._testbeds.iteritems():
580 guids = self._guids_in_testbed(testbed_guid)
582 attribute_lists[testbed_guid][guid] = \
583 testbed.get_attribute_list_deferred(guid, Attribute.ExecImmutable)
585 parser = XmlExperimentParser()
586 execute_data = parser.from_xml_to_data(self._experiment_design_xml)
588 attribute_values = dict(
589 (testbed_guid, collections.defaultdict(dict))
590 for testbed_guid in self._testbeds
593 for testbed_guid, testbed_attribute_lists in attribute_lists.iteritems():
594 testbed = self._testbeds[testbed_guid]
595 for guid, attribute_list in testbed_attribute_lists.iteritems():
596 attribute_list = _undefer(attribute_list)
597 attribute_values[testbed_guid][guid] = dict(
598 (attribute, testbed.get_deferred(guid, attribute))
599 for attribute in attribute_list
602 for testbed_guid, testbed_attribute_values in attribute_values.iteritems():
603 for guid, attribute_values in testbed_attribute_values.iteritems():
604 for attribute, value in attribute_values.iteritems():
605 value = _undefer(value)
606 if value is not None:
607 execute_data.add_attribute_data(guid, attribute, value)
609 self._experiment_execute_xml = parser.to_xml(data=execute_data)
612 for testbed in self._testbeds.values():
614 self._unpersist_testbed_proxies()
615 self._stopped_time = time.time()
618 # reload perviously persisted testbed access configurations
619 self._failed_testbeds.clear()
620 self._load_testbed_proxies()
622 # re-program testbeds that need recovery
623 self._start(recover = True)
625 def is_finished(self, guid):
626 testbed = self._testbed_for_guid(guid)
628 return testbed.status(guid) == AS.STATUS_FINISHED
629 raise RuntimeError("No element exists with guid %d" % guid)
631 def _testbed_recovery_policy(self, guid, data = None):
633 parser = XmlExperimentParser()
634 data = parser.from_xml_to_data(self._experiment_design_xml)
636 return data.get_attribute_data(guid, DC.RECOVERY_POLICY)
638 def status(self, guid):
639 if guid in self._testbeds:
641 # report testbed status
642 if guid in self._failed_testbeds:
643 return TS.STATUS_FAILED
646 return self._testbeds[guid].status()
648 return TS.STATUS_UNRESPONSIVE
651 testbed = self._testbed_for_guid(guid)
652 if testbed is not None:
653 return testbed.status(guid)
655 return AS.STATUS_UNDETERMINED
657 def set(self, guid, name, value, time = TIME_NOW):
658 testbed = self._testbed_for_guid(guid)
660 testbed.set(guid, name, value, time)
662 raise RuntimeError("No element exists with guid %d" % guid)
664 def get(self, guid, name, time = TIME_NOW):
665 testbed = self._testbed_for_guid(guid)
667 return testbed.get(guid, name, time)
668 raise RuntimeError("No element exists with guid %d" % guid)
670 def get_deferred(self, guid, name, time = TIME_NOW):
671 testbed = self._testbed_for_guid(guid)
673 return testbed.get_deferred(guid, name, time)
674 raise RuntimeError("No element exists with guid %d" % guid)
676 def get_factory_id(self, guid):
677 testbed = self._testbed_for_guid(guid)
679 return testbed.get_factory_id(guid)
680 raise RuntimeError("No element exists with guid %d" % guid)
682 def get_testbed_id(self, guid):
683 testbed = self._testbed_for_guid(guid)
685 return testbed.testbed_id
686 raise RuntimeError("No element exists with guid %d" % guid)
688 def get_testbed_version(self, guid):
689 testbed = self._testbed_for_guid(guid)
691 return testbed.testbed_version
692 raise RuntimeError("No element exists with guid %d" % guid)
696 for testbed in self._testbeds.values():
700 exceptions.append(sys.exc_info())
701 for exc_info in exceptions:
702 raise exc_info[0], exc_info[1], exc_info[2]
704 def _testbed_for_guid(self, guid):
705 for testbed_guid in self._testbeds.keys():
706 if guid in self._guids_in_testbed(testbed_guid):
707 if testbed_guid in self._failed_testbeds:
709 return self._testbeds[testbed_guid]
712 def _guids_in_testbed(self, testbed_guid):
713 if testbed_guid not in self._testbeds:
715 if testbed_guid not in self._guids_in_testbed_cache:
716 self._guids_in_testbed_cache[testbed_guid] = \
717 set(self._testbeds[testbed_guid].guids)
718 return self._guids_in_testbed_cache[testbed_guid]
721 def _netref_component_split(component):
722 match = COMPONENT_PATTERN.match(component)
724 return match.group("kind"), match.group("index")
726 return component, None
728 _NETREF_COMPONENT_GETTERS = {
730 lambda testbed, guid, index, name:
731 testbed.get_address(guid, int(index), name),
733 lambda testbed, guid, index, name:
734 testbed.get_route(guid, int(index), name),
736 lambda testbed, guid, index, name:
737 testbed.trace(guid, index, attribute = name),
739 lambda testbed, guid, index, name:
740 testbed.get(guid, name),
743 def resolve_netref_value(self, value, failval = None):
746 for match in ATTRIBUTE_PATTERN_BASE.finditer(value):
747 label = match.group("label")
748 if label.startswith('GUID-'):
749 ref_guid = int(label[5:])
751 expr = match.group("expr")
752 component = (match.group("component") or "")[1:] # skip the dot
753 attribute = match.group("attribute")
755 # split compound components into component kind and index
756 # eg: 'addr[0]' -> ('addr', '0')
757 component, component_index = self._netref_component_split(component)
759 # find object and resolve expression
760 for ref_testbed_guid, ref_testbed in self._testbeds.iteritems():
761 if component not in self._NETREF_COMPONENT_GETTERS:
762 raise ValueError, "Malformed netref: %r - unknown component" % (expr,)
763 elif ref_guid not in self._guids_in_testbed(ref_testbed_guid):
766 ref_value = self._NETREF_COMPONENT_GETTERS[component](
767 ref_testbed, ref_guid, component_index, attribute)
769 value = rv = value.replace(match.group(), ref_value)
772 # unresolvable netref
779 def do_netrefs(self, data, fail_if_undefined = False):
781 for (testbed_guid, guid), attrs in self._netrefs.items():
782 testbed = self._testbeds.get(testbed_guid)
783 if testbed is not None:
784 for name in set(attrs):
785 value = testbed.get(guid, name)
786 if isinstance(value, basestring):
787 ref_value = self.resolve_netref_value(value)
788 if ref_value is not None:
789 testbed.set(guid, name, ref_value)
791 elif fail_if_undefined:
792 raise ValueError, "Unresolvable netref in: %r=%r" % (name,value,)
794 del self._netrefs[(testbed_guid, guid)]
797 for testbed_guid, attrs in self._testbed_netrefs.items():
798 tb_data = dict(data.get_attribute_data(testbed_guid))
800 for name in set(attrs):
801 value = tb_data.get(name)
802 if isinstance(value, basestring):
803 ref_value = self.resolve_netref_value(value)
804 if ref_value is not None:
805 data.set_attribute_data(testbed_guid, name, ref_value)
807 elif fail_if_undefined:
808 raise ValueError, "Unresolvable netref in: %r" % (value,)
810 del self._testbed_netrefs[testbed_guid]
813 def _init_testbed_controllers(self, data, recover = False):
814 blacklist_testbeds = set(self._testbeds)
815 element_guids = list()
817 data_guids = data.guids
821 # gather label associations
822 for guid in data_guids:
823 if not data.is_testbed_data(guid):
824 (testbed_guid, factory_id) = data.get_box_data(guid)
825 label = data.get_attribute_data(guid, "label")
826 if label is not None:
827 if label in label_guids:
828 raise RuntimeError, "Label %r is not unique" % (label,)
829 label_guids[label] = guid
831 # create testbed controllers
832 for guid in data_guids:
833 if data.is_testbed_data(guid):
834 if guid not in self._testbeds:
836 self._create_testbed_controller(
837 guid, data, element_guids, recover)
840 blacklist_testbeds.add(guid)
845 policy = self._testbed_recovery_policy(guid, data=data)
846 if policy == DC.POLICY_RECOVER:
847 self._create_testbed_controller(
848 guid, data, element_guids, False)
850 elif policy == DC.POLICY_RESTART:
851 self._create_testbed_controller(
852 guid, data, element_guids, False)
856 self._failed_testbeds.add(guid)
860 # queue programmable elements
861 # - that have not been programmed already (blacklist_testbeds)
862 # - including recovered or restarted testbeds
863 # - but those that have no unresolved netrefs
864 for guid in data_guids:
865 if not data.is_testbed_data(guid):
866 (testbed_guid, factory_id) = data.get_box_data(guid)
867 if testbed_guid not in blacklist_testbeds:
868 element_guids.append(guid)
870 # replace references to elements labels for its guid
871 self._resolve_labels(data, data_guids, label_guids)
873 # program testbed controllers
875 self._program_testbed_controllers(element_guids, data)
877 return to_recover, to_restart
879 def _resolve_labels(self, data, data_guids, label_guids):
880 netrefs = self._netrefs
881 testbed_netrefs = self._testbed_netrefs
882 for guid in data_guids:
883 for name, value in data.get_attribute_data(guid):
884 if isinstance(value, basestring):
886 for match in ATTRIBUTE_PATTERN_BASE.finditer(value):
887 label = match.group("label")
888 if not label.startswith('GUID-'):
889 ref_guid = label_guids.get(label)
890 if ref_guid is not None:
891 value = value.replace(
893 ATTRIBUTE_PATTERN_GUID_SUB % dict(
894 guid = 'GUID-%d' % (ref_guid,),
895 expr = match.group("expr"),
898 data.set_attribute_data(guid, name, value)
900 # memorize which guid-attribute pairs require
901 # postprocessing, to avoid excessive controller-testbed
902 # communication at configuration time
903 # (which could require high-latency network I/O)
904 if not data.is_testbed_data(guid):
905 (testbed_guid, factory_id) = data.get_box_data(guid)
906 netrefs[(testbed_guid, guid)].add(name)
908 testbed_netrefs[guid].add(name)
914 def _create_testbed_controller(self, guid, data, element_guids, recover):
915 (testbed_id, testbed_version) = data.get_testbed_data(guid)
916 deployment_config = self._deployment_config.get(guid)
918 # deferred import because proxy needs
919 # our class definitions to define proxies
920 import nepi.util.proxy as proxy
922 if deployment_config is None:
924 deployment_config = proxy.AccessConfiguration()
926 for (name, value) in data.get_attribute_data(guid):
927 if value is not None and deployment_config.has_attribute(name):
928 # if any deployment config attribute has a netref, we can't
929 # create this controller yet
930 if isinstance(value, basestring) and ATTRIBUTE_PATTERN_BASE.search(value):
931 # remember to re-issue this one
932 self._netreffed_testbeds.add(guid)
935 # copy deployment config attribute
936 deployment_config.set_attribute_value(name, value)
939 self._deployment_config[guid] = deployment_config
941 if deployment_config is not None:
942 # force recovery mode
943 deployment_config.set_attribute_value("recover",recover)
945 testbed = proxy.create_testbed_controller(testbed_id, testbed_version,
947 for (name, value) in data.get_attribute_data(guid):
948 testbed.defer_configure(name, value)
949 self._testbeds[guid] = testbed
950 if guid in self._netreffed_testbeds:
951 self._netreffed_testbeds.remove(guid)
953 def _program_testbed_controllers(self, element_guids, data):
954 def resolve_create_netref(data, guid, name, value):
955 # Try to resolve create-time netrefs, if possible
956 if isinstance(value, basestring) and ATTRIBUTE_PATTERN_BASE.search(value):
958 nuvalue = self.resolve_netref_value(value)
960 # Any trouble means we're not in shape to resolve the netref yet
962 if nuvalue is not None:
963 # Only if we succeed we remove the netref deferral entry
965 data.set_attribute_data(guid, name, value)
966 if (testbed_guid, guid) in self._netrefs:
967 self._netrefs[(testbed_guid, guid)].discard(name)
970 for guid in element_guids:
971 (testbed_guid, factory_id) = data.get_box_data(guid)
972 testbed = self._testbeds.get(testbed_guid)
973 if testbed is not None:
975 testbed.defer_create(guid, factory_id)
977 for (name, value) in data.get_attribute_data(guid):
978 value = resolve_create_netref(data, guid, name, value)
979 testbed.defer_create_set(guid, name, value)
981 for guid in element_guids:
982 (testbed_guid, factory_id) = data.get_box_data(guid)
983 testbed = self._testbeds.get(testbed_guid)
984 if testbed is not None:
986 for trace_id in data.get_trace_data(guid):
987 testbed.defer_add_trace(guid, trace_id)
989 for (address, netprefix, broadcast) in data.get_address_data(guid):
991 testbed.defer_add_address(guid, address, netprefix,
994 for (destination, netprefix, nexthop, metric) in data.get_route_data(guid):
995 testbed.defer_add_route(guid, destination, netprefix, nexthop, metric)
996 # store connections data
997 for (connector_type_name, other_guid, other_connector_type_name) \
998 in data.get_connection_data(guid):
999 (other_testbed_guid, other_factory_id) = data.get_box_data(
1001 if testbed_guid == other_testbed_guid:
1002 # each testbed should take care of enforcing internal
1003 # connection simmetry, so each connection is only
1004 # added in one direction
1005 testbed.defer_connect(guid, connector_type_name,
1006 other_guid, other_connector_type_name)
1008 def _program_testbed_cross_connections(self, data):
1009 data_guids = data.guids
1010 for guid in data_guids:
1011 if not data.is_testbed_data(guid):
1012 (testbed_guid, factory_id) = data.get_box_data(guid)
1013 testbed = self._testbeds.get(testbed_guid)
1014 if testbed is not None:
1015 for (connector_type_name, cross_guid, cross_connector_type_name) \
1016 in data.get_connection_data(guid):
1017 (testbed_guid, factory_id) = data.get_box_data(guid)
1018 (cross_testbed_guid, cross_factory_id) = data.get_box_data(
1020 if testbed_guid != cross_testbed_guid:
1021 cross_testbed = self._testbeds[cross_testbed_guid]
1022 cross_testbed_id = cross_testbed.testbed_id
1023 testbed.defer_cross_connect(guid, connector_type_name, cross_guid,
1024 cross_testbed_guid, cross_testbed_id, cross_factory_id,
1025 cross_connector_type_name)
1026 # save cross data for later
1027 self._logger.debug("ExperimentController: adding cross_connection data tbd=%d:guid=%d - tbd=%d:guid=%d" % \
1028 (testbed_guid, guid, cross_testbed_guid, cross_guid))
1029 self._add_crossdata(testbed_guid, guid, cross_testbed_guid,
1032 def _add_crossdata(self, testbed_guid, guid, cross_testbed_guid, cross_guid):
1033 if testbed_guid not in self._cross_data:
1034 self._cross_data[testbed_guid] = dict()
1035 if cross_testbed_guid not in self._cross_data[testbed_guid]:
1036 self._cross_data[testbed_guid][cross_testbed_guid] = set()
1037 self._cross_data[testbed_guid][cross_testbed_guid].add(cross_guid)
1039 def _get_cross_data(self, testbed_guid):
1041 if not testbed_guid in self._cross_data:
1044 # fetch attribute lists in one batch
1045 attribute_lists = dict()
1046 for cross_testbed_guid, guid_list in \
1047 self._cross_data[testbed_guid].iteritems():
1048 cross_testbed = self._testbeds[cross_testbed_guid]
1049 for cross_guid in guid_list:
1050 attribute_lists[(cross_testbed_guid, cross_guid)] = \
1051 cross_testbed.get_attribute_list_deferred(cross_guid)
1053 # fetch attribute values in another batch
1054 for cross_testbed_guid, guid_list in \
1055 self._cross_data[testbed_guid].iteritems():
1056 cross_data[cross_testbed_guid] = dict()
1057 cross_testbed = self._testbeds[cross_testbed_guid]
1058 for cross_guid in guid_list:
1059 elem_cross_data = dict(
1061 _testbed_guid = cross_testbed_guid,
1062 _testbed_id = cross_testbed.testbed_id,
1063 _testbed_version = cross_testbed.testbed_version)
1064 cross_data[cross_testbed_guid][cross_guid] = elem_cross_data
1065 attribute_list = attribute_lists[(cross_testbed_guid,cross_guid)]
1066 for attr_name in attribute_list:
1067 attr_value = cross_testbed.get_deferred(cross_guid, attr_name)
1068 elem_cross_data[attr_name] = attr_value
1070 # undefer all values - we'll have to serialize them probably later
1071 for cross_testbed_guid, testbed_cross_data in cross_data.iteritems():
1072 for cross_guid, elem_cross_data in testbed_cross_data.iteritems():
1073 for attr_name, attr_value in elem_cross_data.iteritems():
1074 elem_cross_data[attr_name] = _undefer(attr_value)
1078 class ExperimentSuite(object):
1079 def __init__(self, experiment_xml, access_config, repetitions,
1080 duration, wait_guids):
1081 self._experiment_xml = experiment_xml
1082 self._access_config = access_config
1083 self._experiments = dict()
1084 self._repetitions = repetitions
1085 self._duration = duration
1086 self._wait_guids = wait_guids
1087 self._current = None
1088 self._status = TS.STATUS_ZERO
1092 self._status = TS.STATUS_STARTED
1093 self._thread = threading.Thread(target = self._run_experiment_suite)
1094 self._thread.start()
1101 def _run_experiment_suite(self):
1102 for i in xrange[0, self.repetitions]:
1104 self._run_one_experiment()
1106 def _run_one_experiment(self):
1107 access_config = proxy.AccessConfiguration()
1108 for attr in self._access_config.attributes:
1109 access_config.set_attribute_value(attr.name, attr.value)
1110 access_config.set_attribute_value(DC.DEPLOYMENT_MODE, DC.MODE_DAEMON)
1111 root_dir = "%s_%d" % (
1112 access_config.get_attribute_value(DC.ROOT_DIRECTORY),
1114 access_config.set_attribute_value(DC.ROOT_DIRECTORY, root_dir)
1115 controller = proxy.create_experiment_controller(self._experiment_xml,
1117 self._experiments[self._current] = controller
1119 started_at = time.time()
1120 # wait until all specified guids have finished execution
1121 if self._wait_guids:
1122 while all(itertools.imap(controller.is_finished, self._wait_guids):
1124 # wait until the minimum experiment duration time has elapsed
1126 while (time.time() - started_at) < self._duration:
1130 controller.shutdown()