2 # -*- coding: utf-8 -*-
4 from nepi.core.attributes import Attribute, AttributesMap
7 from nepi.util import validation
8 from nepi.util.constants import ATTR_NEPI_TESTBED_ENVIRONMENT_SETUP, DeploymentConfiguration
10 class VersionedMetadataInfo(object):
12 def connector_types(self):
13 """ dictionary of dictionaries with allowed connection information.
16 "name": connector type name,
17 "max": maximum number of connections allowed (-1 for no limit),
18 "min": minimum number of connections allowed
21 raise NotImplementedError
24 def connections(self):
25 """ array of dictionaries with allowed connection information.
27 "from": (testbed_id1, factory_id1, connector_type_name1),
28 "to": (testbed_id2, factory_id2, connector_type_name2),
29 "init_code": connection function to invoke for connection initiation
30 "compl_code": connection function to invoke for connection
32 "can_cross": whether the connection can be done across testbed
36 raise NotImplementedError
40 """ dictionary of dictionaries of all available attributes.
42 "name": attribute name,
44 "type": attribute type,
45 "value": default attribute value,
46 "range": (maximum, minimun) values else None if not defined,
47 "allowed": array of posible values,
48 "flags": attributes flags,
49 "validation_function": validation function for the attribute
52 raise NotImplementedError
56 """ dictionary of dictionaries of all available traces.
62 raise NotImplementedError
65 def create_order(self):
66 """ list of factory ids that indicates the order in which the elements
67 should be instantiated.
69 raise NotImplementedError
72 def configure_order(self):
73 """ list of factory ids that indicates the order in which the elements
76 raise NotImplementedError
79 def preconfigure_order(self):
80 """ list of factory ids that indicates the order in which the elements
81 should be preconfigured.
83 Default: same as configure_order
85 return self.configure_order
88 def factories_info(self):
89 """ dictionary of dictionaries of factory specific information
91 "allow_addresses": whether the box allows adding IP addresses,
92 "allow_routes": wether the box allows adding routes,
93 "has_addresses": whether the box allows obtaining IP addresses,
94 "has_routes": wether the box allows obtaining routes,
96 "category": category the element belongs to,
97 "create_function": function for element instantiation,
98 "start_function": function for element starting,
99 "stop_function": function for element stoping,
100 "status_function": function for retrieving element status,
101 "preconfigure_function": function for element preconfiguration,
102 (just after connections are made,
103 just before netrefs are resolved)
104 "configure_function": function for element configuration,
105 "factory_attributes": list of references to attribute_ids,
106 "box_attributes": list of regerences to attribute_ids,
107 "traces": list of references to trace_id
108 "connector_types": list of references to connector_types
111 raise NotImplementedError
114 def testbed_attributes(self):
115 """ dictionary of attributes for testbed instance configuration
116 attributes_id = dict({
117 "name": attribute name,
119 "type": attribute type,
120 "value": default attribute value,
121 "range": (maximum, minimun) values else None if not defined,
122 "allowed": array of posible values,
123 "flags": attributes flags,
124 "validation_function": validation function for the attribute
128 raise NotImplementedError
130 class Metadata(object):
131 STANDARD_BOX_ATTRIBUTES = (
134 validation_function = validation.is_string,
135 type = Attribute.STRING,
136 flags = Attribute.DesignOnly,
137 help = "A unique identifier for referring to this box",
141 # Shorthand for DeploymentConfiguration
142 # Syntactic sugar to shorten stuff
143 DC = DeploymentConfiguration
145 STANDARD_TESTBED_ATTRIBUTES = (
146 ("home_directory", dict(
147 name = "homeDirectory",
148 validation_function = validation.is_string,
149 help = "Path to the directory where traces and other files will be stored",
150 type = Attribute.STRING,
152 flags = Attribute.DesignOnly,
156 DEPLOYMENT_ATTRIBUTES = (
157 # TESTBED DEPLOYMENT ATTRIBUTES
158 (DC.DEPLOYMENT_ENVIRONMENT_SETUP, dict(
159 name = DC.DEPLOYMENT_ENVIRONMENT_SETUP,
160 validation_function = validation.is_string,
161 help = "Shell commands to run before spawning TestbedController processes",
162 type = Attribute.STRING,
163 flags = Attribute.DesignOnly,
165 (DC.DEPLOYMENT_MODE, dict(name = DC.DEPLOYMENT_MODE,
166 help = "Instance execution mode",
167 type = Attribute.ENUM,
168 value = DC.MODE_SINGLE_PROCESS,
171 DC.MODE_SINGLE_PROCESS
173 flags = Attribute.DesignOnly,
174 validation_function = validation.is_enum
176 (DC.DEPLOYMENT_COMMUNICATION, dict(name = DC.DEPLOYMENT_COMMUNICATION,
177 help = "Instance communication mode",
178 type = Attribute.ENUM,
179 value = DC.ACCESS_LOCAL,
184 flags = Attribute.DesignOnly,
185 validation_function = validation.is_enum
187 (DC.DEPLOYMENT_HOST, dict(name = DC.DEPLOYMENT_HOST,
188 help = "Host where the testbed will be executed",
189 type = Attribute.STRING,
191 flags = Attribute.DesignOnly,
192 validation_function = validation.is_string
194 (DC.DEPLOYMENT_USER, dict(name = DC.DEPLOYMENT_USER,
195 help = "User on the Host to execute the testbed",
196 type = Attribute.STRING,
197 value = getpass.getuser(),
198 flags = Attribute.DesignOnly,
199 validation_function = validation.is_string
201 (DC.DEPLOYMENT_KEY, dict(name = DC.DEPLOYMENT_KEY,
202 help = "Path to SSH key to use for connecting",
203 type = Attribute.STRING,
204 flags = Attribute.DesignOnly,
205 validation_function = validation.is_string
207 (DC.DEPLOYMENT_PORT, dict(name = DC.DEPLOYMENT_PORT,
208 help = "Port on the Host",
209 type = Attribute.INTEGER,
211 flags = Attribute.DesignOnly,
212 validation_function = validation.is_integer
214 (DC.ROOT_DIRECTORY, dict(name = DC.ROOT_DIRECTORY,
215 help = "Root directory for storing process files",
216 type = Attribute.STRING,
218 flags = Attribute.DesignOnly,
219 validation_function = validation.is_string # TODO: validation.is_path
221 (DC.USE_AGENT, dict(name = DC.USE_AGENT,
222 help = "Use -A option for forwarding of the authentication agent, if ssh access is used",
223 type = Attribute.BOOL,
225 flags = Attribute.DesignOnly,
226 validation_function = validation.is_bool
228 (DC.LOG_LEVEL, dict(name = DC.LOG_LEVEL,
229 help = "Log level for instance",
230 type = Attribute.ENUM,
231 value = DC.ERROR_LEVEL,
236 flags = Attribute.DesignOnly,
237 validation_function = validation.is_enum
239 (DC.RECOVER, dict(name = DC.RECOVER,
240 help = "Do not intantiate testbeds, rather, reconnect to already-running instances. Used to recover from a dead controller.",
241 type = Attribute.BOOL,
243 flags = Attribute.DesignOnly,
244 validation_function = validation.is_bool
248 STANDARD_TESTBED_ATTRIBUTES += DEPLOYMENT_ATTRIBUTES
253 STANDARD_ATTRIBUTE_BUNDLES = {
256 "help": "TUNneling protocol used",
257 "type": Attribute.STRING,
258 "flags": Attribute.Invisible | Attribute.ReadOnly,
259 "validation_function": validation.is_string,
263 "help": "IP address of the tunnel endpoint",
264 "type": Attribute.STRING,
265 "flags": Attribute.Invisible | Attribute.ReadOnly,
266 "validation_function": validation.is_ip_address,
270 "help": "IP port of the tunnel endpoint",
271 "type": Attribute.INTEGER,
272 "flags": Attribute.Invisible | Attribute.ReadOnly,
273 "validation_function": validation.is_integer,
278 def __init__(self, testbed_id, version):
279 self._version = version
280 self._testbed_id = testbed_id
281 metadata_module = self._load_versioned_metadata_module()
282 self._metadata = metadata_module.VersionedMetadataInfo()
285 def create_order(self):
286 return self._metadata.create_order
289 def configure_order(self):
290 return self._metadata.configure_order
293 def preconfigure_order(self):
294 return self._metadata.preconfigure_order
296 def testbed_attributes(self):
297 attributes = AttributesMap()
299 # standard attributes
300 self._add_standard_attributes(attributes, None, True, False,
301 self.STANDARD_TESTBED_ATTRIBUTES)
303 # custom attributes - they override standard ones
304 for attr_info in self._metadata.testbed_attributes.values():
305 name = attr_info["name"]
306 help = attr_info["help"]
307 type = attr_info["type"]
308 value = attr_info["value"] if "value" in attr_info else None
309 range = attr_info["range"] if "range" in attr_info else None
310 allowed = attr_info["allowed"] if "allowed" in attr_info else None
311 flags = attr_info["flags"] if "flags" in attr_info \
312 else Attribute.NoFlags
313 validation_function = attr_info["validation_function"]
314 attributes.add_attribute(name, help, type, value,
315 range, allowed, flags, validation_function)
319 def build_design_factories(self):
320 from nepi.core.design import Factory
322 for factory_id, info in self._metadata.factories_info.iteritems():
324 category = info["category"]
325 allow_addresses = info.get("allow_addresses", False)
326 allow_routes = info.get("allow_routes", False)
327 has_addresses = info.get("has_addresses", False)
328 has_routes = info.get("has_routes", False)
329 factory = Factory(factory_id,
330 allow_addresses, has_addresses,
331 allow_routes, has_routes,
334 # standard attributes
335 self._add_standard_attributes(factory, info, True, True,
336 self.STANDARD_BOX_ATTRIBUTES)
338 # custom attributes - they override standard ones
339 self._add_attributes(factory, info, "factory_attributes")
340 self._add_attributes(factory, info, "box_attributes", True)
342 self._add_design_traces(factory, info)
343 self._add_design_connector_types(factory, info)
344 factories.append(factory)
347 def build_execute_factories(self):
348 from nepi.core.execute import Factory
350 for factory_id, info in self._metadata.factories_info.iteritems():
351 create_function = info.get("create_function")
352 start_function = info.get("start_function")
353 stop_function = info.get("stop_function")
354 status_function = info.get("status_function")
355 configure_function = info.get("configure_function")
356 preconfigure_function = info.get("preconfigure_function")
357 allow_addresses = info.get("allow_addresses", False)
358 allow_routes = info.get("allow_routes", False)
359 has_addresses = info.get("has_addresses", False)
360 has_routes = info.get("has_routes", False)
361 factory = Factory(factory_id, create_function, start_function,
362 stop_function, status_function,
363 configure_function, preconfigure_function,
364 allow_addresses, has_addresses,
365 allow_routes, has_routes)
367 # standard attributes
368 self._add_standard_attributes(factory, info, False, True,
369 self.STANDARD_BOX_ATTRIBUTES)
371 # custom attributes - they override standard ones
372 self._add_attributes(factory, info, "factory_attributes")
373 self._add_attributes(factory, info, "box_attributes", True)
375 self._add_execute_traces(factory, info)
376 self._add_execute_connector_types(factory, info)
377 factories.append(factory)
380 def _load_versioned_metadata_module(self):
381 mod_name = "nepi.testbeds.%s.metadata_v%s" % (self._testbed_id.lower(),
383 if not mod_name in sys.modules:
385 return sys.modules[mod_name]
387 def _add_standard_attributes(self, factory, info, design, box, STANDARD_ATTRIBUTES):
389 attr_bundle = STANDARD_ATTRIBUTES
391 # Only add non-DesignOnly attributes
392 def nonDesign(attr_info):
393 return not (attr_info[1].get('flags',Attribute.NoFlags) & Attribute.DesignOnly)
394 attr_bundle = filter(nonDesign, STANDARD_ATTRIBUTES)
395 self._add_attributes(factory, info, None, box,
396 attr_bundle = STANDARD_ATTRIBUTES)
398 def _add_attributes(self, factory, info, attr_key, box_attributes = False, attr_bundle = ()):
399 if not attr_bundle and info and attr_key in info:
400 definitions = self.STANDARD_ATTRIBUTE_BUNDLES.copy()
401 definitions.update(self._metadata.attributes)
402 attr_bundle = [ (attr_id, definitions[attr_id])
403 for attr_id in info[attr_key] ]
404 for attr_id, attr_info in attr_bundle:
405 name = attr_info["name"]
406 help = attr_info["help"]
407 type = attr_info["type"]
408 value = attr_info["value"] if "value" in attr_info else None
409 range = attr_info["range"] if "range" in attr_info else None
410 allowed = attr_info["allowed"] if "allowed" in attr_info \
412 flags = attr_info["flags"] if "flags" in attr_info \
413 and attr_info["flags"] != None \
414 else Attribute.NoFlags
415 validation_function = attr_info["validation_function"]
417 factory.add_box_attribute(name, help, type, value, range,
418 allowed, flags, validation_function)
420 factory.add_attribute(name, help, type, value, range,
421 allowed, flags, validation_function)
423 def _add_design_traces(self, factory, info):
425 for trace in info["traces"]:
426 trace_info = self._metadata.traces[trace]
427 trace_id = trace_info["name"]
428 help = trace_info["help"]
429 factory.add_trace(trace_id, help)
431 def _add_execute_traces(self, factory, info):
433 for trace in info["traces"]:
434 trace_info = self._metadata.traces[trace]
435 trace_id = trace_info["name"]
436 factory.add_trace(trace_id)
438 def _add_design_connector_types(self, factory, info):
439 from nepi.core.design import ConnectorType
440 if "connector_types" in info:
442 for connection in self._metadata.connections:
443 from_ = connection["from"]
444 to = connection["to"]
445 can_cross = connection["can_cross"]
446 if from_ not in connections:
447 connections[from_] = list()
448 if to not in connections:
449 connections[to] = list()
450 connections[from_].append((to, can_cross))
451 connections[to].append((from_, can_cross))
452 for connector_id in info["connector_types"]:
453 connector_type_info = self._metadata.connector_types[
455 name = connector_type_info["name"]
456 help = connector_type_info["help"]
457 max = connector_type_info["max"]
458 min = connector_type_info["min"]
459 testbed_id = self._testbed_id
460 factory_id = factory.factory_id
461 connector_type = ConnectorType(testbed_id, factory_id, name,
463 for (to, can_cross) in connections[(testbed_id, factory_id,
465 (testbed_id_to, factory_id_to, name_to) = to
466 connector_type.add_allowed_connection(testbed_id_to,
467 factory_id_to, name_to, can_cross)
468 factory.add_connector_type(connector_type)
470 def _add_execute_connector_types(self, factory, info):
471 from nepi.core.execute import ConnectorType
472 if "connector_types" in info:
473 from_connections = dict()
474 to_connections = dict()
475 for connection in self._metadata.connections:
476 from_ = connection["from"]
477 to = connection["to"]
478 can_cross = connection["can_cross"]
479 init_code = connection["init_code"] \
480 if "init_code" in connection else None
481 compl_code = connection["compl_code"] \
482 if "compl_code" in connection else None
483 if from_ not in from_connections:
484 from_connections[from_] = list()
485 if to not in to_connections:
486 to_connections[to] = list()
487 from_connections[from_].append((to, can_cross, init_code,
489 to_connections[to].append((from_, can_cross, init_code,
491 for connector_id in info["connector_types"]:
492 connector_type_info = self._metadata.connector_types[
494 name = connector_type_info["name"]
495 max = connector_type_info["max"]
496 min = connector_type_info["min"]
497 testbed_id = self._testbed_id
498 factory_id = factory.factory_id
499 connector_type = ConnectorType(testbed_id, factory_id, name,
501 connector_key = (testbed_id, factory_id, name)
502 if connector_key in to_connections:
503 for (from_, can_cross, init_code, compl_code) in \
504 to_connections[connector_key]:
505 (testbed_id_from, factory_id_from, name_from) = from_
506 connector_type.add_from_connection(testbed_id_from,
507 factory_id_from, name_from, can_cross,
508 init_code, compl_code)
509 if connector_key in from_connections:
510 for (to, can_cross, init_code, compl_code) in \
511 from_connections[(testbed_id, factory_id, name)]:
512 (testbed_id_to, factory_id_to, name_to) = to
513 connector_type.add_to_connection(testbed_id_to,
514 factory_id_to, name_to, can_cross, init_code,
516 factory.add_connector_type(connector_type)