2 # -*- coding: utf-8 -*-
8 from nepi.core.attributes import AttributesMap, Attribute
9 from nepi.core.metadata import Metadata
10 from nepi.util import validation
11 from nepi.util.constants import AF_INET, AF_INET6
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(object):
18 def __init__(self, testbed_id, factory_id, name, help, max = -1, min = 0):
19 super(ConnectorType, self).__init__()
24 "The maximum number of connections allowed need to be more than 0")
27 "The minimum number of connections allowed needs to be at least 0")
28 # connector_type_id -- univoquely identifies a connector type
30 self._connector_type_id = (testbed_id.lower(), factory_id.lower(),
32 # name -- display name for the connector type
36 # max -- maximum amount of connections that this type support,
39 # min -- minimum amount of connections required by this type of connector
41 # allowed_connections -- keys in the dictionary correspond to the
42 # connector_type_id for possible connections. The value indicates if
43 # the connection is allowed accros different testbed instances
44 self._allowed_connections = dict()
47 def connector_type_id(self):
48 return self._connector_type_id
66 def add_allowed_connection(self, testbed_id, factory_id, name, can_cross):
67 self._allowed_connections[(testbed_id.lower(),
68 factory_id.lower(), name.lower())] = can_cross
70 def can_connect(self, connector_type_id, testbed_guid1, testbed_guid2):
71 if not connector_type_id in self._allowed_connections.keys():
73 can_cross = self._allowed_connections[connector_type_id]
74 return can_cross or (testbed_guid1 == testbed_guid2)
76 class Connector(object):
77 """A Connector sepcifies the connection points in an Object"""
78 def __init__(self, box, connector_type):
79 super(Connector, self).__init__()
81 self._connector_type = connector_type
82 self._connections = list()
89 def connector_type(self):
90 return self._connector_type
93 def connections(self):
94 return self._connections
97 """Return True if the connector has the maximum number of connections
99 return len(self.connections) == self.connector_type.max
101 def is_complete(self):
102 """Return True if the connector has the minimum number of connections
104 return len(self.connections) >= self.connector_type.min
106 def is_connected(self, connector):
107 return connector in self._connections
109 def connect(self, connector):
110 if not self.can_connect(connector) or not connector.can_connect(self):
111 raise RuntimeError("Could not connect.")
112 self._connections.append(connector)
113 connector._connections.append(self)
115 def disconnect(self, connector):
116 if connector not in self._connections or\
117 self not in connector._connections:
118 raise RuntimeError("Could not disconnect.")
119 self._connections.remove(connector)
120 connector._connections.remove(self)
122 def can_connect(self, connector):
123 if self.is_full() or connector.is_full():
125 if self.is_connected(connector):
127 connector_type_id = connector.connector_type.connector_type_id
128 testbed_guid1 = self.box.testbed_guid
129 testbed_guid2 = connector.box.testbed_guid
130 return self.connector_type.can_connect(connector_type_id,
131 testbed_guid1, testbed_guid2)
134 for connector in self.connections:
135 self.disconnect(connector)
136 self._box = self._connectors = None
138 class Trace(AttributesMap):
139 def __init__(self, trace_id, help, enabled = False):
140 super(Trace, self).__init__()
141 self._trace_id = trace_id
143 self.enabled = enabled
147 return self._trace_id
153 class Address(AttributesMap):
154 def __init__(self, family):
155 super(Address, self).__init__()
156 self.add_attribute(name = "AutoConfigure",
157 help = "If set, this address will automatically be assigned",
158 type = Attribute.BOOL,
160 validation_function = validation.is_bool)
161 self.add_attribute(name = "Family",
162 help = "Address family type: AF_INET, AFT_INET6",
163 type = Attribute.INTEGER,
166 address_validation = validation.is_ip4_address if family == AF_INET \
167 else validation.is_ip6_address
168 self.add_attribute(name = "Address",
169 help = "Address number",
170 type = Attribute.STRING,
171 validation_function = address_validation)
172 prefix_range = (0, 32) if family == AF_INET else (0, 128)
173 self.add_attribute(name = "NetPrefix",
174 help = "Network prefix for the address",
175 type = Attribute.INTEGER,
176 range = prefix_range,
177 value = 24 if family == AF_INET else 64,
178 validation_function = validation.is_integer)
179 if family == AF_INET:
180 self.add_attribute(name = "Broadcast",
181 help = "Broadcast address",
182 type = Attribute.STRING,
183 validation_function = validation.is_ip4_address)
185 class Route(AttributesMap):
186 def __init__(self, family):
187 super(Route, self).__init__()
188 self.add_attribute(name = "Family",
189 help = "Address family type: AF_INET, AFT_INET6",
190 type = Attribute.INTEGER,
193 address_validation = validation.is_ip4_address if family == AF_INET \
194 else validation.is_ip6_address
195 self.add_attribute(name = "Destination",
196 help = "Network destintation",
197 type = Attribute.STRING,
198 validation_function = address_validation)
199 prefix_range = (0, 32) if family == AF_INET else (0, 128)
200 self.add_attribute(name = "NetPrefix",
201 help = "Network destination prefix",
202 type = Attribute.INTEGER,
203 prefix_range = prefix_range,
204 validation_function = validation.is_integer)
205 self.add_attribute(name = "NextHop",
206 help = "Address for the next hop",
207 type = Attribute.STRING,
208 validation_function = address_validation)
209 self.add_attribute(name = "Interface",
210 help = "Local interface address",
211 type = Attribute.STRING,
212 validation_function = address_validation)
214 class Box(AttributesMap):
215 def __init__(self, guid, factory, testbed_guid, container = None):
216 super(Box, self).__init__()
217 # guid -- global unique identifier
219 # factory_id -- factory identifier or name
220 self._factory_id = factory.factory_id
221 # testbed_guid -- parent testbed guid
222 self._testbed_guid = testbed_guid
223 # container -- boxes can be nested inside other 'container' boxes
224 self._container = container
225 # traces -- list of available traces for the box
226 self._traces = dict()
227 # connectors -- list of available connectors for the box
228 self._connectors = dict()
229 # factory_attributes -- factory attributes for box construction
230 self._factory_attributes = list()
231 # graphical_info -- GUI position information
232 self.graphical_info = GraphicalInfo(str(self._guid))
234 for connector_type in factory.connector_types:
235 connector = Connector(self, connector_type)
236 self._connectors[connector_type.name] = connector
237 for trace in factory.traces:
238 tr = Trace(trace.trace_id, trace.help, trace.enabled)
239 self._traces[trace.trace_id] = tr
240 for attr in factory.box_attributes:
241 self.add_attribute(attr.name, attr.help, attr.type, attr.value,
242 attr.range, attr.allowed, attr.readonly, attr.visible,
243 attr.validation_function)
244 for attr in factory.attributes:
245 self._factory_attributes.append(attr)
252 def factory_id(self):
253 return self._factory_id
256 def testbed_guid(self):
257 return self._testbed_guid
261 return self._container
264 def connectors(self):
265 return self._connectors.values()
269 return self._traces.values()
272 def factory_attributes(self):
273 return self._factory_attributes
283 def connector(self, name):
284 return self._connectors[name]
286 def trace(self, trace_id):
287 return self._traces[trace_id]
290 super(Box, self).destroy()
291 for c in self.connectors:
293 for t in self.traces:
295 self._connectors = self._traces = self._factory_attributes = None
297 class AddressableBox(Box):
298 def __init__(self, guid, factory, testbed_guid, container = None):
299 super(AddressableBox, self).__init__(guid, factory, testbed_guid,
301 self._family = factory.get_attribute_value("Family")
302 # maximum number of addresses this box can have
303 self._max_addresses = factory.get_attribute_value("MaxAddresses")
304 self._addresses = list()
308 return self._addresses
311 def max_addresses(self):
312 return self._max_addresses
314 def add_address(self):
315 if len(self._addresses) == self.max_addresses:
316 raise RuntimeError("Maximun number of addresses for this box reached.")
317 address = Address(family = self._family)
318 self._addresses.append(address)
321 def delete_address(self, address):
322 self._addresses.remove(address)
326 super(AddressableBox, self).destroy()
327 for address in self.addresses:
328 self.delete_address(address)
329 self._addresses = None
331 class RoutingTableBox(Box):
332 def __init__(self, guid, factory, container = None):
333 super(RoutingTableBox, self).__init__(guid, factory, container)
334 self._routes = list()
340 def add_route(self, family):
341 route = Route(family = family)
342 self._routes.append(route)
345 def delete_route(self, route):
346 self._route.remove(route)
350 super(RoutingTableBox, self).destroy()
351 for route in self.routes:
352 self.delete_route(route)
355 class Factory(AttributesMap):
356 def __init__(self, factory_id, allow_addresses = False,
357 allow_routes = False, Help = None, category = None):
358 super(Factory, self).__init__()
359 self._factory_id = factory_id
360 self._allow_addresses = (allow_addresses == True)
361 self._allow_routes = (allow_routes == True)
363 self._category = category
364 self._connector_types = list()
365 self._traces = list()
366 self._box_attributes = list()
369 def factory_id(self):
370 return self._factory_id
373 def allow_addresses(self):
374 return self._allow_addresses
377 def allow_routes(self):
378 return self._allow_routes
386 return self._category
389 def connector_types(self):
390 return self._connector_types
397 def box_attributes(self):
398 return self._box_attributes
400 def add_connector_type(self, connector_type):
401 self._connector_types.append(connector_type)
403 def add_trace(self, trace_id, help, enabled = False):
404 trace = Trace(trace_id, help, enabled)
405 self._traces.append(trace)
407 def add_box_attribute(self, name, help, type, value = None, range = None,
408 allowed = None, readonly = False, visible = True,
409 validation_function = None):
410 attribute = Attribute(name, help, type, value, range, allowed, readonly,
411 visible, validation_function)
412 self._box_attributes.append(attribute)
414 def create(self, guid, testbed_description):
415 if self._allow_addresses:
416 return AddressableBox(guid, self, testbed_description.guid)
417 elif self._allow_routes:
418 return RoutingTableBox(guid, self, testbed_description.guid)
420 return Box(guid, self, testbed_description.guid)
423 super(Factory, self).destroy()
424 self._connector_types = None
426 class FactoriesProvider(object):
427 def __init__(self, testbed_id, testbed_version):
428 super(FactoriesProvider, self).__init__()
429 self._testbed_id = testbed_id
430 self._testbed_version = testbed_version
431 self._factories = dict()
433 metadata = Metadata(testbed_id, testbed_version)
434 for factory in metadata.build_design_factories():
435 self.add_factory(factory)
438 def testbed_id(self):
439 return self._testbed_id
442 def testbed_version(self):
443 return self._testbed_version
447 return self._factories.values()
449 def factory(self, factory_id):
450 return self._factories[factory_id]
452 def add_factory(self, factory):
453 self._factories[factory.factory_id] = factory
455 def remove_factory(self, factory_id):
456 del self._factories[factory_id]
458 class TestbedDescription(AttributesMap):
459 def __init__(self, guid_generator, provider):
460 super(TestbedDescription, self).__init__()
461 self._guid_generator = guid_generator
462 self._guid = guid_generator.next()
463 self._provider = provider
465 self.graphical_info = GraphicalInfo(str(self._guid))
473 return self._provider
477 return self._boxes.values()
480 return self._boxes[guid] if guid in self._boxes else None
482 def create(self, factory_id):
483 guid = self._guid_generator.next()
484 factory = self._provider.factory(factory_id)
485 box = factory.create(guid, self)
486 self._boxes[guid] = box
489 def delete(self, guid):
490 box = self._boxes[guid]
491 del self._boxes[guid]
495 for guid, box in self._boxes.iteritems():
499 class ExperimentDescription(object):
500 def __init__(self, guid = 0):
501 self._guid_generator = GuidGenerator(guid)
502 self._testbed_descriptions = dict()
505 def testbed_descriptions(self):
506 return self._testbed_descriptions.values()
509 parser = XmlExperimentParser()
510 return parser.to_xml(self)
512 def from_xml(self, xml):
513 parser = XmlExperimentParser()
514 parser.from_xml(self, xml)
516 def testbed_description(self, guid):
517 return self._testbed_descriptions[guid] \
518 if guid in self._testbed_descriptions else None
521 for testbed_description in self._testbed_descriptions.values():
522 box = testbed_description.box(guid)
526 def add_testbed_description(self, provider):
527 testbed_description = TestbedDescription(self._guid_generator,
529 guid = testbed_description.guid
530 self._testbed_descriptions[guid] = testbed_description
531 return testbed_description
533 def remove_testbed_description(self, testbed_description):
534 guid = testbed_description.guid
535 del self._testbed_descriptions[guid]
538 for testbed_description in self.testbed_descriptions:
539 testbed_description.destroy()
541 # TODO: When the experiment xml is passed to the controller to execute it
542 # NetReferences in the xml need to be solved
544 #targets = re.findall(r"%target:(.*?)%", command)
545 #for target in targets:
547 # (family, address, port) = resolve_netref(target, AF_INET,
548 # self.server.experiment )
549 # command = command.replace("%%target:%s%%" % target, address.address)