2 # -*- coding: utf-8 -*-
8 from nepi.core.attributes import AttributesMap, Attribute
9 from nepi.core.connector import ConnectorTypeBase
10 from nepi.core.metadata import Metadata
11 from nepi.util import validation
12 from nepi.util.guid import GuidGenerator
13 from nepi.util.graphical_info import GraphicalInfo
14 from nepi.util.parser._xml import XmlExperimentParser
17 class ConnectorType(ConnectorTypeBase):
18 def __init__(self, testbed_id, factory_id, name, help, max = -1, min = 0):
19 super(ConnectorType, self).__init__(testbed_id, factory_id, name, max, min)
24 # allowed_connections -- keys in the dictionary correspond to the
25 # connector_type_id for possible connections. The value indicates if
26 # the connection is allowed accros different testbed instances
27 self._allowed_connections = dict()
33 def add_allowed_connection(self, testbed_id, factory_id, name, can_cross):
34 type_id = self.make_connector_type_id(testbed_id, factory_id, name)
35 self._allowed_connections[type_id] = can_cross
37 def can_connect(self, connector_type_id, testbed_guid1, testbed_guid2):
38 for lookup_type_id in self._type_resolution_order(connector_type_id):
39 if lookup_type_id in self._allowed_connections:
40 can_cross = self._allowed_connections[lookup_type_id]
41 if can_cross or (testbed_guid1 == testbed_guid2):
46 class Connector(object):
47 """A Connector sepcifies the connection points in an Object"""
48 def __init__(self, box, connector_type):
49 super(Connector, self).__init__()
51 self._connector_type = connector_type
52 self._connections = list()
55 return "Connector(%s, %s)" % (self.box, self.connector_type)
62 def connector_type(self):
63 return self._connector_type
66 def connections(self):
67 return self._connections
70 """Return True if the connector has the maximum number of connections
72 return len(self.connections) == self.connector_type.max
74 def is_complete(self):
75 """Return True if the connector has the minimum number of connections
77 return len(self.connections) >= self.connector_type.min
79 def is_connected(self, connector):
80 return connector in self._connections
82 def connect(self, connector):
83 if not self.can_connect(connector) or not connector.can_connect(self):
84 raise RuntimeError("Could not connect. %s to %s" % (self, connector))
85 self._connections.append(connector)
86 connector._connections.append(self)
88 def disconnect(self, connector):
89 if connector not in self._connections or\
90 self not in connector._connections:
91 raise RuntimeError("Could not disconnect.")
92 self._connections.remove(connector)
93 connector._connections.remove(self)
95 def can_connect(self, connector):
96 if self.is_full() or connector.is_full():
98 if self.is_connected(connector):
100 connector_type_id = connector.connector_type.connector_type_id
101 testbed_guid1 = self.box.testbed_guid
102 testbed_guid2 = connector.box.testbed_guid
103 return self.connector_type.can_connect(connector_type_id,
104 testbed_guid1, testbed_guid2)
107 for connector in self.connections:
108 self.disconnect(connector)
109 self._box = self._connectors = None
111 class Trace(AttributesMap):
112 def __init__(self, trace_id, help, enabled = False):
113 super(Trace, self).__init__()
114 self._trace_id = trace_id
116 self._enabled = enabled
120 return self._trace_id
134 self._enabled = False
136 class Address(AttributesMap):
138 super(Address, self).__init__()
139 self.add_attribute(name = "AutoConfigure",
140 help = "If set, this address will automatically be assigned",
141 type = Attribute.BOOL,
143 flags = Attribute.DesignOnly,
144 validation_function = validation.is_bool)
145 self.add_attribute(name = "Address",
146 help = "Address number",
147 type = Attribute.STRING,
148 flags = Attribute.HasNoDefaultValue,
149 validation_function = validation.is_ip_address)
150 self.add_attribute(name = "NetPrefix",
151 help = "Network prefix for the address",
152 type = Attribute.INTEGER,
155 flags = Attribute.HasNoDefaultValue,
156 validation_function = validation.is_integer)
157 self.add_attribute(name = "Broadcast",
158 help = "Broadcast address",
159 type = Attribute.STRING,
160 validation_function = validation.is_ip4_address)
162 class Route(AttributesMap):
164 super(Route, self).__init__()
165 self.add_attribute(name = "Destination",
166 help = "Network destintation",
167 type = Attribute.STRING,
168 validation_function = validation.is_ip_address)
169 self.add_attribute(name = "NetPrefix",
170 help = "Network destination prefix",
171 type = Attribute.INTEGER,
174 flags = Attribute.HasNoDefaultValue,
175 validation_function = validation.is_integer)
176 self.add_attribute(name = "NextHop",
177 help = "Address for the next hop",
178 type = Attribute.STRING,
179 flags = Attribute.HasNoDefaultValue,
180 validation_function = validation.is_ip_address)
182 class Box(AttributesMap):
183 def __init__(self, guid, factory, testbed_guid, container = None):
184 super(Box, self).__init__()
185 # guid -- global unique identifier
187 # factory_id -- factory identifier or name
188 self._factory_id = factory.factory_id
189 # testbed_guid -- parent testbed guid
190 self._testbed_guid = testbed_guid
191 # container -- boxes can be nested inside other 'container' boxes
192 self._container = container
193 # traces -- list of available traces for the box
194 self._traces = dict()
195 # tags -- list of tags for the box
197 # connectors -- list of available connectors for the box
198 self._connectors = dict()
199 # factory_attributes -- factory attributes for box construction
200 self._factory_attributes = dict()
201 # graphical_info -- GUI position information
202 self.graphical_info = GraphicalInfo()
204 for connector_type in factory.connector_types:
205 connector = Connector(self, connector_type)
206 self._connectors[connector_type.name] = connector
207 for trace in factory.traces:
208 tr = Trace(trace.trace_id, trace.help, trace.enabled)
209 self._traces[trace.trace_id] = tr
210 for tag_id in factory.tags:
211 self._tags.append(tag_id)
212 for attr in factory.box_attributes.attributes:
213 self.add_attribute(attr.name, attr.help, attr.type, attr.value,
214 attr.range, attr.allowed, attr.flags,
215 attr.validation_function, attr.category)
216 for attr in factory.attributes:
218 self._factory_attributes[attr.name] = attr.value
221 return "Box(%s, %s, %s)" % (self.guid, self.factory_id, self.testbed_guid)
228 def factory_id(self):
229 return self._factory_id
232 def testbed_guid(self):
233 return self._testbed_guid
237 return self._container
240 def connectors(self):
241 return self._connectors.values()
245 return self._traces.values()
248 def trace_names(self):
249 return self._traces.keys()
252 def factory_attributes(self):
253 return self._factory_attributes
267 def trace_help(self, trace_id):
268 return self._traces[trace_id].help
270 def enable_trace(self, trace_id):
271 self._traces[trace_id].enable()
273 def disable_trace(self, trace_id):
274 self._traces[trace_id].disable()
276 def is_trace_enabled(self, trace_id):
277 return self._traces[trace_id].enabled
279 def connector(self, name):
280 return self._connectors[name]
283 super(Box, self).destroy()
284 for c in self.connectors:
286 for t in self.traces:
288 self._connectors = self._traces = self._factory_attributes = None
290 class AddressableMixin(object):
291 def __init__(self, guid, factory, testbed_guid, container = None):
292 super(AddressableMixin, self).__init__(guid, factory, testbed_guid,
294 self._max_addresses = 1 # TODO: How to make this configurable!
295 self._addresses = list()
299 return self._addresses
302 def max_addresses(self):
303 return self._max_addresses
305 class UserAddressableMixin(AddressableMixin):
306 def __init__(self, guid, factory, testbed_guid, container = None):
307 super(UserAddressableMixin, self).__init__(guid, factory, testbed_guid,
310 def add_address(self):
311 if len(self._addresses) == self.max_addresses:
312 raise RuntimeError("Maximun number of addresses for this box reached.")
314 self._addresses.append(address)
317 def delete_address(self, address):
318 self._addresses.remove(address)
322 super(UserAddressableMixin, self).destroy()
323 for address in list(self.addresses):
324 self.delete_address(address)
325 self._addresses = None
327 class RoutableMixin(object):
328 def __init__(self, guid, factory, testbed_guid, container = None):
329 super(RoutableMixin, self).__init__(guid, factory, testbed_guid,
331 self._routes = list()
337 class UserRoutableMixin(RoutableMixin):
338 def __init__(self, guid, factory, testbed_guid, container = None):
339 super(UserRoutableMixin, self).__init__(guid, factory, testbed_guid,
344 self._routes.append(route)
347 def delete_route(self, route):
348 self._routes.remove(route)
352 super(UserRoutableMixin, self).destroy()
353 for route in list(self.routes):
354 self.delete_route(route)
357 def MixIn(MyClass, MixIn):
358 # Mixins are installed BEFORE "Box" because
359 # Box inherits from non-cooperative classes,
360 # so the MRO chain gets broken when it gets
364 MyClass.__bases__ = (MixIn,) + MyClass.__bases__
367 # Somehow it doesn't work automatically
368 for name in dir(MixIn):
369 prop = getattr(MixIn,name,None)
370 if isinstance(prop, property):
371 setattr(MyClass, name, prop)
374 MyClass.__name__ = MyClass.__name__.replace(
376 MixIn.__name__.replace('MixIn','')+'Box',
379 class Factory(AttributesMap):
380 _box_class_cache = {}
382 def __init__(self, factory_id,
383 allow_addresses = False, has_addresses = False,
384 allow_routes = False, has_routes = False,
385 Help = None, category = None):
386 super(Factory, self).__init__()
387 self._factory_id = factory_id
388 self._allow_addresses = bool(allow_addresses)
389 self._allow_routes = bool(allow_routes)
390 self._has_addresses = bool(allow_addresses) or self._allow_addresses
391 self._has_routes = bool(allow_routes) or self._allow_routes
393 self._category = category
394 self._connector_types = list()
395 self._traces = list()
397 self._box_attributes = AttributesMap()
399 if not self._has_addresses and not self._has_routes:
402 addresses = 'w' if self._allow_addresses else ('r' if self._has_addresses else '-')
403 routes = 'w' if self._allow_routes else ('r' if self._has_routes else '-')
404 key = addresses+routes
406 if key in self._box_class_cache:
407 self._factory = self._box_class_cache[key]
411 def __init__(self, guid, factory, testbed_guid, container = None):
412 super(_factory, self).__init__(guid, factory, testbed_guid, container)
414 # Add mixins, one by one
416 MixIn(_factory, UserAddressableMixin)
418 MixIn(_factory, AddressableMixin)
421 MixIn(_factory, UserRoutableMixin)
423 MixIn(_factory, RoutableMixin)
426 self._box_class_cache[key] = self._factory = _factory
429 def factory_id(self):
430 return self._factory_id
433 def allow_addresses(self):
434 return self._allow_addresses
437 def allow_routes(self):
438 return self._allow_routes
441 def has_addresses(self):
442 return self._has_addresses
445 def has_routes(self):
446 return self._has_routes
454 return self._category
457 def connector_types(self):
458 return self._connector_types
469 def box_attributes(self):
470 return self._box_attributes
472 def add_connector_type(self, connector_type):
473 self._connector_types.append(connector_type)
475 def add_trace(self, trace_id, help, enabled = False):
476 trace = Trace(trace_id, help, enabled)
477 self._traces.append(trace)
479 def add_tag(self, tag_id):
480 self._tags.append(tag_id)
482 def add_box_attribute(self, name, help, type, value = None, range = None,
483 allowed = None, flags = Attribute.NoFlags, validation_function = None,
485 self._box_attributes.add_attribute(name, help, type, value, range,
486 allowed, flags, validation_function, category)
488 def create(self, guid, testbed_description):
489 return self._factory(guid, self, testbed_description.guid)
492 super(Factory, self).destroy()
493 self._connector_types = None
495 class FactoriesProvider(object):
496 def __init__(self, testbed_id, testbed_version):
497 super(FactoriesProvider, self).__init__()
498 self._testbed_id = testbed_id
499 self._testbed_version = testbed_version
500 self._factories = dict()
502 metadata = Metadata(testbed_id, testbed_version)
503 for factory in metadata.build_design_factories():
504 self.add_factory(factory)
507 def testbed_id(self):
508 return self._testbed_id
511 def testbed_version(self):
512 return self._testbed_version
516 return self._factories.values()
518 def factory(self, factory_id):
519 return self._factories[factory_id]
521 def add_factory(self, factory):
522 self._factories[factory.factory_id] = factory
524 def remove_factory(self, factory_id):
525 del self._factories[factory_id]
527 class TestbedDescription(AttributesMap):
528 def __init__(self, guid_generator, provider, guid = None):
529 super(TestbedDescription, self).__init__()
530 self._guid_generator = guid_generator
531 self._guid = guid_generator.next(guid)
532 self._provider = provider
534 self.graphical_info = GraphicalInfo()
536 metadata = Metadata(provider.testbed_id, provider.testbed_version)
537 for attr in metadata.testbed_attributes().attributes:
538 self.add_attribute(attr.name, attr.help, attr.type, attr.value,
539 attr.range, attr.allowed, attr.flags,
540 attr.validation_function, attr.category)
548 return self._provider
552 return self._boxes.values()
555 return self._boxes[guid] if guid in self._boxes else None
557 def create(self, factory_id, guid = None):
558 guid = self._guid_generator.next(guid)
559 factory = self._provider.factory(factory_id)
560 box = factory.create(guid, self)
561 self._boxes[guid] = box
564 def delete(self, guid):
565 box = self._boxes[guid]
566 del self._boxes[guid]
570 for guid, box in self._boxes.iteritems():
574 class ExperimentDescription(object):
576 self._guid_generator = GuidGenerator()
577 self._testbed_descriptions = dict()
580 def testbed_descriptions(self):
581 return self._testbed_descriptions.values()
584 parser = XmlExperimentParser()
585 return parser.to_xml(self)
587 def from_xml(self, xml):
588 parser = XmlExperimentParser()
589 parser.from_xml(self, xml)
591 def testbed_description(self, guid):
592 return self._testbed_descriptions[guid] \
593 if guid in self._testbed_descriptions else None
596 for testbed_description in self._testbed_descriptions.values():
597 box = testbed_description.box(guid)
601 def get_element(self, guid):
602 if guid in self._testbed_descriptions:
603 return self._testbed_descriptions[guid]
604 for testbed_description in self._testbed_descriptions.values():
605 box = testbed_description.box(guid)
609 def add_testbed_description(self, provider, guid = None):
610 testbed_description = TestbedDescription(self._guid_generator,
612 guid = testbed_description.guid
613 self._testbed_descriptions[guid] = testbed_description
614 return testbed_description
616 def remove_testbed_description(self, guid):
617 testbed_description = self._testbed_descriptions[guid]
618 del self._testbed_descriptions[guid]
619 testbed_description.destroy()
622 for testbed_description in self.testbed_descriptions:
623 testbed_description.destroy()