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source: fedd/federation/experiment_control.py @ e777dab

axis_examplecompt_changesinfo-opsversion-3.01version-3.02

Last change on this file since e777dab was 593e901, checked in by Ted Faber <faber@…>, 15 years ago
Checkpoint working federation w/PG (w/o routing yet...)
Property mode set to `100644`
File size: 93.9 KB

Line
1	#!/usr/local/bin/python
2
3	import os,sys
4
5	import re
6	import random
7	import string
8	import subprocess
9	import tempfile
10	import copy
11	import pickle
12	import logging
13	import signal
14	import time
15
16	import traceback
17	# For parsing visualization output and splitter output
18	import xml.parsers.expat
19
20	from threading import Lock, Thread, Condition
21	from subprocess import call, Popen, PIPE
22
23	from urlparse import urlparse
24	from urllib2 import urlopen
25
26	from util import *
27	from fedid import fedid, generate_fedid
28	from remote_service import xmlrpc_handler, soap_handler, service_caller
29	from service_error import service_error
30	from synch_store import synch_store
31
32	import topdl
33	import list_log
34	from ip_allocator import ip_allocator
35	from ip_addr import ip_addr
36
37
38	class nullHandler(logging.Handler):
39	def emit(self, record): pass
40
41	fl = logging.getLogger("fedd.experiment_control")
42	fl.addHandler(nullHandler())
43
44	class experiment_control_local:
45	"""
46	Control of experiments that this system can directly access.
47
48	Includes experiment creation, termination and information dissemination.
49	Thred safe.
50	"""
51
52	class ssh_cmd_timeout(RuntimeError): pass
53
54	class thread_pool:
55	"""
56	A class to keep track of a set of threads all invoked for the same
57	task. Manages the mutual exclusion of the states.
58	"""
59	def __init__(self, nthreads):
60	"""
61	Start a pool.
62	"""
63	self.changed = Condition()
64	self.started = 0
65	self.terminated = 0
66	self.nthreads = nthreads
67
68	def acquire(self):
69	"""
70	Get the pool's lock.
71	"""
72	self.changed.acquire()
73
74	def release(self):
75	"""
76	Release the pool's lock.
77	"""
78	self.changed.release()
79
80	def wait(self, timeout = None):
81	"""
82	Wait for a pool thread to start or stop.
83	"""
84	self.changed.wait(timeout)
85
86	def start(self):
87	"""
88	Called by a pool thread to report starting.
89	"""
90	self.changed.acquire()
91	self.started += 1
92	self.changed.notifyAll()
93	self.changed.release()
94
95	def terminate(self):
96	"""
97	Called by a pool thread to report finishing.
98	"""
99	self.changed.acquire()
100	self.terminated += 1
101	self.changed.notifyAll()
102	self.changed.release()
103
104	def clear(self):
105	"""
106	Clear all pool data.
107	"""
108	self.changed.acquire()
109	self.started = 0
110	self.terminated =0
111	self.changed.notifyAll()
112	self.changed.release()
113
114	def wait_for_slot(self):
115	"""
116	Wait until we have a free slot to start another pooled thread
117	"""
118	self.acquire()
119	while self.started - self.terminated >= self.nthreads:
120	self.wait()
121	self.release()
122
123	def wait_for_all_done(self, timeout=None):
124	"""
125	Wait until all active threads finish (and at least one has
126	started). If a timeout is given, return after waiting that long
127	for termination. If all threads are done (and one has started in
128	the since the last clear()) return True, otherwise False.
129	"""
130	if timeout:
131	deadline = time.time() + timeout
132	self.acquire()
133	while self.started == 0 or self.started > self.terminated:
134	self.wait(timeout)
135	if timeout:
136	if time.time() > deadline:
137	break
138	timeout = deadline - time.time()
139	self.release()
140	return not (self.started == 0 or self.started > self.terminated)
141
142	class pooled_thread(Thread):
143	"""
144	One of a set of threads dedicated to a specific task. Uses the
145	thread_pool class above for coordination.
146	"""
147	def __init__(self, group=None, target=None, name=None, args=(),
148	kwargs={}, pdata=None, trace_file=None):
149	Thread.__init__(self, group, target, name, args, kwargs)
150	self.rv = None # Return value of the ops in this thread
151	self.exception = None # Exception that terminated this thread
152	self.target=target # Target function to run on start()
153	self.args = args # Args to pass to target
154	self.kwargs = kwargs # Additional kw args
155	self.pdata = pdata # thread_pool for this class
156	# Logger for this thread
157	self.log = logging.getLogger("fedd.experiment_control")
158
159	def run(self):
160	"""
161	Emulate Thread.run, except add pool data manipulation and error
162	logging.
163	"""
164	if self.pdata:
165	self.pdata.start()
166
167	if self.target:
168	try:
169	self.rv = self.target(self.args, *self.kwargs)
170	except service_error, s:
171	self.exception = s
172	self.log.error("Thread exception: %s %s" % \
173	(s.code_string(), s.desc))
174	except:
175	self.exception = sys.exc_info()[1]
176	self.log.error(("Unexpected thread exception: %s" +\
177	"Trace %s") % (self.exception,\
178	traceback.format_exc()))
179	if self.pdata:
180	self.pdata.terminate()
181
182	call_RequestAccess = service_caller('RequestAccess')
183	call_ReleaseAccess = service_caller('ReleaseAccess')
184	call_StartSegment = service_caller('StartSegment')
185	call_TerminateSegment = service_caller('TerminateSegment')
186	call_Ns2Split = service_caller('Ns2Split')
187
188	def __init__(self, config=None, auth=None):
189	"""
190	Intialize the various attributes, most from the config object
191	"""
192
193	def parse_tarfile_list(tf):
194	"""
195	Parse a tarfile list from the configuration. This is a set of
196	paths and tarfiles separated by spaces.
197	"""
198	rv = [ ]
199	if tf is not None:
200	tl = tf.split()
201	while len(tl) > 1:
202	p, t = tl[0:2]
203	del tl[0:2]
204	rv.append((p, t))
205	return rv
206
207	self.thread_with_rv = experiment_control_local.pooled_thread
208	self.thread_pool = experiment_control_local.thread_pool
209	self.list_log = list_log.list_log
210
211	self.cert_file = config.get("experiment_control", "cert_file")
212	if self.cert_file:
213	self.cert_pwd = config.get("experiment_control", "cert_pwd")
214	else:
215	self.cert_file = config.get("globals", "cert_file")
216	self.cert_pwd = config.get("globals", "cert_pwd")
217
218	self.trusted_certs = config.get("experiment_control", "trusted_certs") \
219	or config.get("globals", "trusted_certs")
220
221	self.repodir = config.get("experiment_control", "repodir")
222	self.repo_url = config.get("experiment_control", "repo_url",
223	"https://users.isi.deterlab.net:23235");
224
225	self.exp_stem = "fed-stem"
226	self.log = logging.getLogger("fedd.experiment_control")
227	set_log_level(config, "experiment_control", self.log)
228	self.muxmax = 2
229	self.nthreads = 2
230	self.randomize_experiments = False
231
232	self.splitter = None
233	self.ssh_keygen = "/usr/bin/ssh-keygen"
234	self.ssh_identity_file = None
235
236
237	self.debug = config.getboolean("experiment_control", "create_debug")
238	self.cleanup = not config.getboolean("experiment_control",
239	"leave_tmpfiles")
240	self.state_filename = config.get("experiment_control",
241	"experiment_state")
242	self.store_filename = config.get("experiment_control",
243	"synch_store")
244	self.store_url = config.get("experiment_control", "store_url")
245	self.splitter_url = config.get("experiment_control", "splitter_uri")
246	self.fedkit = parse_tarfile_list(\
247	config.get("experiment_control", "fedkit"))
248	self.gatewaykit = parse_tarfile_list(\
249	config.get("experiment_control", "gatewaykit"))
250	accessdb_file = config.get("experiment_control", "accessdb")
251
252	self.ssh_pubkey_file = config.get("experiment_control",
253	"ssh_pubkey_file")
254	self.ssh_privkey_file = config.get("experiment_control",
255	"ssh_privkey_file")
256	# NB for internal master/slave ops, not experiment setup
257	self.ssh_type = config.get("experiment_control", "sshkeytype", "rsa")
258
259	self.overrides = set([])
260	ovr = config.get('experiment_control', 'overrides')
261	if ovr:
262	for o in ovr.split(","):
263	o = o.strip()
264	if o.startswith('fedid:'): o = o[len('fedid:'):]
265	self.overrides.add(fedid(hexstr=o))
266
267	self.state = { }
268	self.state_lock = Lock()
269	self.tclsh = "/usr/local/bin/otclsh"
270	self.tcl_splitter = config.get("splitter", "tcl_splitter") or \
271	config.get("experiment_control", "tcl_splitter",
272	"/usr/testbed/lib/ns2ir/parse.tcl")
273	mapdb_file = config.get("experiment_control", "mapdb")
274	self.trace_file = sys.stderr
275
276	self.def_expstart = \
277	"sudo -H /bin/sh /usr/local/federation/bin/federate.sh >& " +\
278	"/tmp/federate";
279	self.def_mexpstart = "sudo -H /usr/local/federation/bin/make_hosts " +\
280	"FEDDIR/hosts";
281	self.def_gwstart = \
282	"sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF>& " +\
283	"/tmp/bridge.log";
284	self.def_mgwstart = \
285	"sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF >& " +\
286	"/tmp/bridge.log";
287	self.def_gwimage = "FBSD61-TUNNEL2";
288	self.def_gwtype = "pc";
289	self.local_access = { }
290
291	if auth:
292	self.auth = auth
293	else:
294	self.log.error(\
295	"[access]: No authorizer initialized, creating local one.")
296	auth = authorizer()
297
298
299	if self.ssh_pubkey_file:
300	try:
301	f = open(self.ssh_pubkey_file, 'r')
302	self.ssh_pubkey = f.read()
303	f.close()
304	except IOError:
305	raise service_error(service_error.internal,
306	"Cannot read sshpubkey")
307	else:
308	raise service_error(service_error.internal,
309	"No SSH public key file?")
310
311	if not self.ssh_privkey_file:
312	raise service_error(service_error.internal,
313	"No SSH public key file?")
314
315
316	if mapdb_file:
317	self.read_mapdb(mapdb_file)
318	else:
319	self.log.warn("[experiment_control] No testbed map, using defaults")
320	self.tbmap = {
321	'deter':'https://users.isi.deterlab.net:23235',
322	'emulab':'https://users.isi.deterlab.net:23236',
323	'ucb':'https://users.isi.deterlab.net:23237',
324	}
325
326	if accessdb_file:
327	self.read_accessdb(accessdb_file)
328	else:
329	raise service_error(service_error.internal,
330	"No accessdb specified in config")
331
332	# Grab saved state. OK to do this w/o locking because it's read only
333	# and only one thread should be in existence that can see self.state at
334	# this point.
335	if self.state_filename:
336	self.read_state()
337
338	if self.store_filename:
339	self.read_store()
340	else:
341	self.log.warning("No saved synch store")
342	self.synch_store = synch_store
343
344	# Dispatch tables
345	self.soap_services = {\
346	'New': soap_handler('New', self.new_experiment),
347	'Create': soap_handler('Create', self.create_experiment),
348	'Vtopo': soap_handler('Vtopo', self.get_vtopo),
349	'Vis': soap_handler('Vis', self.get_vis),
350	'Info': soap_handler('Info', self.get_info),
351	'MultiInfo': soap_handler('MultiInfo', self.get_multi_info),
352	'Terminate': soap_handler('Terminate',
353	self.terminate_experiment),
354	'GetValue': soap_handler('GetValue', self.GetValue),
355	'SetValue': soap_handler('SetValue', self.SetValue),
356	}
357
358	self.xmlrpc_services = {\
359	'New': xmlrpc_handler('New', self.new_experiment),
360	'Create': xmlrpc_handler('Create', self.create_experiment),
361	'Vtopo': xmlrpc_handler('Vtopo', self.get_vtopo),
362	'Vis': xmlrpc_handler('Vis', self.get_vis),
363	'Info': xmlrpc_handler('Info', self.get_info),
364	'MultiInfo': xmlrpc_handler('MultiInfo', self.get_multi_info),
365	'Terminate': xmlrpc_handler('Terminate',
366	self.terminate_experiment),
367	'GetValue': xmlrpc_handler('GetValue', self.GetValue),
368	'SetValue': xmlrpc_handler('SetValue', self.SetValue),
369	}
370
371	# Call while holding self.state_lock
372	def write_state(self):
373	"""
374	Write a new copy of experiment state after copying the existing state
375	to a backup.
376
377	State format is a simple pickling of the state dictionary.
378	"""
379	if os.access(self.state_filename, os.W_OK):
380	copy_file(self.state_filename, \
381	"%s.bak" % self.state_filename)
382	try:
383	f = open(self.state_filename, 'w')
384	pickle.dump(self.state, f)
385	except IOError, e:
386	self.log.error("Can't write file %s: %s" % \
387	(self.state_filename, e))
388	except pickle.PicklingError, e:
389	self.log.error("Pickling problem: %s" % e)
390	except TypeError, e:
391	self.log.error("Pickling problem (TypeError): %s" % e)
392
393	@staticmethod
394	def get_alloc_ids(state):
395	"""
396	Pull the fedids of the identifiers of each allocation from the
397	state. Again, a dict dive that's best isolated.
398
399	Used by read_store and read state
400	"""
401
402	return [ f['allocID']['fedid']
403	for f in state.get('federant',[]) \
404	if f.has_key('allocID') and \
405	f['allocID'].has_key('fedid')]
406
407	# Call while holding self.state_lock
408	def read_state(self):
409	"""
410	Read a new copy of experiment state. Old state is overwritten.
411
412	State format is a simple pickling of the state dictionary.
413	"""
414
415	def get_experiment_id(state):
416	"""
417	Pull the fedid experimentID out of the saved state. This is kind
418	of a gross walk through the dict.
419	"""
420
421	if state.has_key('experimentID'):
422	for e in state['experimentID']:
423	if e.has_key('fedid'):
424	return e['fedid']
425	else:
426	return None
427	else:
428	return None
429
430	try:
431	f = open(self.state_filename, "r")
432	self.state = pickle.load(f)
433	self.log.debug("[read_state]: Read state from %s" % \
434	self.state_filename)
435	except IOError, e:
436	self.log.warning("[read_state]: No saved state: Can't open %s: %s"\
437	% (self.state_filename, e))
438	except pickle.UnpicklingError, e:
439	self.log.warning(("[read_state]: No saved state: " + \
440	"Unpickling failed: %s") % e)
441
442	for s in self.state.values():
443	try:
444
445	eid = get_experiment_id(s)
446	if eid :
447	# Give the owner rights to the experiment
448	self.auth.set_attribute(s['owner'], eid)
449	# And holders of the eid as well
450	self.auth.set_attribute(eid, eid)
451	# allow overrides to control experiments as well
452	for o in self.overrides:
453	self.auth.set_attribute(o, eid)
454	# Set permissions to allow reading of the software repo, if
455	# any, as well.
456	for a in self.get_alloc_ids(s):
457	self.auth.set_attribute(a, 'repo/%s' % eid)
458	else:
459	raise KeyError("No experiment id")
460	except KeyError, e:
461	self.log.warning("[read_state]: State ownership or identity " +\
462	"misformatted in %s: %s" % (self.state_filename, e))
463
464
465	def read_accessdb(self, accessdb_file):
466	"""
467	Read the mapping from fedids that can create experiments to their name
468	in the 3-level access namespace. All will be asserted from this
469	testbed and can include the local username and porject that will be
470	asserted on their behalf by this fedd. Each fedid is also added to the
471	authorization system with the "create" attribute.
472	"""
473	self.accessdb = {}
474	# These are the regexps for parsing the db
475	name_expr = "[" + string.ascii_letters + string.digits + "\.\-]+"
476	project_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \
477	"\s->\(\s("+name_expr+")\s,\s("+name_expr+")\s\)\s$")
478	user_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \
479	"\s->\s(" + name_expr + ")\s*$")
480	lineno = 0
481
482	# Parse the mappings and store in self.authdb, a dict of
483	# fedid -> (proj, user)
484	try:
485	f = open(accessdb_file, "r")
486	for line in f:
487	lineno += 1
488	line = line.strip()
489	if len(line) == 0 or line.startswith('#'):
490	continue
491	m = project_line.match(line)
492	if m:
493	fid = fedid(hexstr=m.group(1))
494	project, user = m.group(2,3)
495	if not self.accessdb.has_key(fid):
496	self.accessdb[fid] = []
497	self.accessdb[fid].append((project, user))
498	continue
499
500	m = user_line.match(line)
501	if m:
502	fid = fedid(hexstr=m.group(1))
503	project = None
504	user = m.group(2)
505	if not self.accessdb.has_key(fid):
506	self.accessdb[fid] = []
507	self.accessdb[fid].append((project, user))
508	continue
509	self.log.warn("[experiment_control] Error parsing access " +\
510	"db %s at line %d" % (accessdb_file, lineno))
511	except IOError:
512	raise service_error(service_error.internal,
513	"Error opening/reading %s as experiment " +\
514	"control accessdb" % accessdb_file)
515	f.close()
516
517	# Initialize the authorization attributes
518	for fid in self.accessdb.keys():
519	self.auth.set_attribute(fid, 'create')
520	self.auth.set_attribute(fid, 'new')
521
522	def read_mapdb(self, file):
523	"""
524	Read a simple colon separated list of mappings for the
525	label-to-testbed-URL mappings. Clears or creates self.tbmap.
526	"""
527
528	self.tbmap = { }
529	lineno =0
530	try:
531	f = open(file, "r")
532	for line in f:
533	lineno += 1
534	line = line.strip()
535	if line.startswith('#') or len(line) == 0:
536	continue
537	try:
538	label, url = line.split(':', 1)
539	self.tbmap[label] = url
540	except ValueError, e:
541	self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\
542	"map db: %s %s" % (lineno, line, e))
543	except IOError, e:
544	self.log.warning("[read_mapdb]: No saved map database: Can't " +\
545	"open %s: %s" % (file, e))
546	f.close()
547
548	def read_store(self):
549	try:
550	self.synch_store = synch_store()
551	self.synch_store.load(self.store_filename)
552	self.log.debug("[read_store]: Read store from %s" % \
553	self.store_filename)
554	except IOError, e:
555	self.log.warning("[read_store]: No saved store: Can't open %s: %s"\
556	% (self.state_filename, e))
557	self.synch_store = synch_store()
558
559	# Set the initial permissions on data in the store. XXX: This ad hoc
560	# authorization attribute initialization is getting out of hand.
561	for k in self.synch_store.all_keys():
562	try:
563	if k.startswith('fedid:'):
564	fid = fedid(hexstr=k[6:46])
565	if self.state.has_key(fid):
566	for a in self.get_alloc_ids(self.state[fid]):
567	self.auth.set_attribute(a, k)
568	except ValueError, e:
569	self.log.warn("Cannot deduce permissions for %s" % k)
570
571
572	def write_store(self):
573	"""
574	Write a new copy of synch_store after writing current state
575	to a backup. We use the internal synch_store pickle method to avoid
576	incinsistent data.
577
578	State format is a simple pickling of the store.
579	"""
580	if os.access(self.store_filename, os.W_OK):
581	copy_file(self.store_filename, \
582	"%s.bak" % self.store_filename)
583	try:
584	self.synch_store.save(self.store_filename)
585	except IOError, e:
586	self.log.error("Can't write file %s: %s" % \
587	(self.store_filename, e))
588	except TypeError, e:
589	self.log.error("Pickling problem (TypeError): %s" % e)
590
591
592	def generate_ssh_keys(self, dest, type="rsa" ):
593	"""
594	Generate a set of keys for the gateways to use to talk.
595
596	Keys are of type type and are stored in the required dest file.
597	"""
598	valid_types = ("rsa", "dsa")
599	t = type.lower();
600	if t not in valid_types: raise ValueError
601	cmd = [self.ssh_keygen, '-t', t, '-N', '', '-f', dest]
602
603	try:
604	trace = open("/dev/null", "w")
605	except IOError:
606	raise service_error(service_error.internal,
607	"Cannot open /dev/null??");
608
609	# May raise CalledProcessError
610	self.log.debug("[generate_ssh_keys]: %s" % " ".join(cmd))
611	rv = call(cmd, stdout=trace, stderr=trace, close_fds=True)
612	if rv != 0:
613	raise service_error(service_error.internal,
614	"Cannot generate nonce ssh keys. %s return code %d" \
615	% (self.ssh_keygen, rv))
616
617	def gentopo(self, str):
618	"""
619	Generate the topology dtat structure from the splitter's XML
620	representation of it.
621
622	The topology XML looks like:
623	<experiment>
624	<nodes>
625	<node><vname></vname><ips>ip1:ip2</ips></node>
626	</nodes>
627	<lans>
628	<lan>
629	<vname></vname><vnode></vnode><ip></ip>
630	<bandwidth></bandwidth><member>node:port</member>
631	</lan>
632	</lans>
633	"""
634	class topo_parse:
635	"""
636	Parse the topology XML and create the dats structure.
637	"""
638	def __init__(self):
639	# Typing of the subelements for data conversion
640	self.str_subelements = ('vname', 'vnode', 'ips', 'ip', 'member')
641	self.int_subelements = ( 'bandwidth',)
642	self.float_subelements = ( 'delay',)
643	# The final data structure
644	self.nodes = [ ]
645	self.lans = [ ]
646	self.topo = { \
647	'node': self.nodes,\
648	'lan' : self.lans,\
649	}
650	self.element = { } # Current element being created
651	self.chars = "" # Last text seen
652
653	def end_element(self, name):
654	# After each sub element the contents is added to the current
655	# element or to the appropriate list.
656	if name == 'node':
657	self.nodes.append(self.element)
658	self.element = { }
659	elif name == 'lan':
660	self.lans.append(self.element)
661	self.element = { }
662	elif name in self.str_subelements:
663	self.element[name] = self.chars
664	self.chars = ""
665	elif name in self.int_subelements:
666	self.element[name] = int(self.chars)
667	self.chars = ""
668	elif name in self.float_subelements:
669	self.element[name] = float(self.chars)
670	self.chars = ""
671
672	def found_chars(self, data):
673	self.chars += data.rstrip()
674
675
676	tp = topo_parse();
677	parser = xml.parsers.expat.ParserCreate()
678	parser.EndElementHandler = tp.end_element
679	parser.CharacterDataHandler = tp.found_chars
680
681	parser.Parse(str)
682
683	return tp.topo
684
685
686	def genviz(self, topo):
687	"""
688	Generate the visualization the virtual topology
689	"""
690
691	neato = "/usr/local/bin/neato"
692	# These are used to parse neato output and to create the visualization
693	# file.
694	vis_re = re.compile('^\s"?([\w\-]+)"?\s+\[.pos="([\d\.]+),([\d\.]+)"')
695	vis_fmt = "<node><name>%s</name><x>%s</x><y>%s</y><type>" + \
696	"%s</type></node>"
697
698	try:
699	# Node names
700	nodes = [ n['vname'] for n in topo['node'] ]
701	topo_lans = topo['lan']
702	except KeyError, e:
703	raise service_error(service_error.internal, "Bad topology: %s" %e)
704
705	lans = { }
706	links = { }
707
708	# Walk through the virtual topology, organizing the connections into
709	# 2-node connections (links) and more-than-2-node connections (lans).
710	# When a lan is created, it's added to the list of nodes (there's a
711	# node in the visualization for the lan).
712	for l in topo_lans:
713	if links.has_key(l['vname']):
714	if len(links[l['vname']]) < 2:
715	links[l['vname']].append(l['vnode'])
716	else:
717	nodes.append(l['vname'])
718	lans[l['vname']] = links[l['vname']]
719	del links[l['vname']]
720	lans[l['vname']].append(l['vnode'])
721	elif lans.has_key(l['vname']):
722	lans[l['vname']].append(l['vnode'])
723	else:
724	links[l['vname']] = [ l['vnode'] ]
725
726
727	# Open up a temporary file for dot to turn into a visualization
728	try:
729	df, dotname = tempfile.mkstemp()
730	dotfile = os.fdopen(df, 'w')
731	except IOError:
732	raise service_error(service_error.internal,
733	"Failed to open file in genviz")
734
735	try:
736	dnull = open('/dev/null', 'w')
737	except IOError:
738	service_error(service_error.internal,
739	"Failed to open /dev/null in genviz")
740
741	# Generate a dot/neato input file from the links, nodes and lans
742	try:
743	print >>dotfile, "graph G {"
744	for n in nodes:
745	print >>dotfile, '\t"%s"' % n
746	for l in links.keys():
747	print >>dotfile, '\t"%s" -- "%s"' % tuple(links[l])
748	for l in lans.keys():
749	for n in lans[l]:
750	print >>dotfile, '\t "%s" -- "%s"' % (n,l)
751	print >>dotfile, "}"
752	dotfile.close()
753	except TypeError:
754	raise service_error(service_error.internal,
755	"Single endpoint link in vtopo")
756	except IOError:
757	raise service_error(service_error.internal, "Cannot write dot file")
758
759	# Use dot to create a visualization
760	dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005', '-Gmaxiter=2000',
761	'-Gpack=true', dotname], stdout=PIPE, stderr=dnull,
762	close_fds=True)
763	dnull.close()
764
765	# Translate dot to vis format
766	vis_nodes = [ ]
767	vis = { 'node': vis_nodes }
768	for line in dot.stdout:
769	m = vis_re.match(line)
770	if m:
771	vn = m.group(1)
772	vis_node = {'name': vn, \
773	'x': float(m.group(2)),\
774	'y' : float(m.group(3)),\
775	}
776	if vn in links.keys() or vn in lans.keys():
777	vis_node['type'] = 'lan'
778	else:
779	vis_node['type'] = 'node'
780	vis_nodes.append(vis_node)
781	rv = dot.wait()
782
783	os.remove(dotname)
784	if rv == 0 : return vis
785	else: return None
786
787	def get_access(self, tb, nodes, tbparam, master, export_project,
788	access_user, services):
789	"""
790	Get access to testbed through fedd and set the parameters for that tb
791	"""
792	uri = self.tbmap.get(tb, None)
793	if not uri:
794	raise service_error(service_error.server_config,
795	"Unknown testbed: %s" % tb)
796
797	# Tweak search order so that if there are entries in access_user that
798	# have a project matching the export project, we try them first
799	if export_project and export_project.has_key('localname'):
800	pn = export_project['localname']
801
802	access_sequence = [ (p, u) for p, u in access_user if p == pn]
803	access_sequence.extend([(p, u) for p, u in access_user if p != pn])
804	else:
805	access_sequence = access_user
806
807	for p, u in access_sequence:
808	self.log.debug(("[get_access] Attempting access from (%s, %s) " + \
809	"to %s") % ((p or "None"), u, uri))
810
811	if p:
812	# Request with user and project specified
813	req = {\
814	'destinationTestbed' : { 'uri' : uri },
815	'credential': [ "project: %s" % p, "user: %s" % u],
816	'allocID' : { 'localname': 'test' },
817	}
818	else:
819	# Request with only user specified
820	req = {\
821	'destinationTestbed' : { 'uri' : uri },
822	'credential': [ 'user: %s' % u ],
823	'user': [ {'userID': { 'localname': u } } ],
824	'allocID' : { 'localname': 'test' },
825	}
826
827	if tb == master:
828	# NB, the export_project parameter is a dict that includes
829	# the type
830	req['exportProject'] = export_project
831	req['service'] = [
832	{ 'name': 'userconfig', 'visibility': 'export'},
833	{ 'name': 'SMB', 'visibility': 'export'},
834	{ 'name': 'seer', 'visibility': 'export'},
835	{ 'name': 'tmcd', 'visibility': 'export'},
836	]
837
838	# node resources if any
839	if nodes != None and len(nodes) > 0:
840	rnodes = [ ]
841	for n in nodes:
842	rn = { }
843	image, hw, count = n.split(":")
844	if image: rn['image'] = [ image ]
845	if hw: rn['hardware'] = [ hw ]
846	if count and int(count) >0 : rn['count'] = int(count)
847	rnodes.append(rn)
848	req['resources']= { }
849	req['resources']['node'] = rnodes
850
851	try:
852	if self.local_access.has_key(uri):
853	# Local access call
854	req = { 'RequestAccessRequestBody' : req }
855	r = self.local_access[uri].RequestAccess(req,
856	fedid(file=self.cert_file))
857	r = { 'RequestAccessResponseBody' : r }
858	else:
859	r = self.call_RequestAccess(uri, req,
860	self.cert_file, self.cert_pwd, self.trusted_certs)
861	except service_error, e:
862	if e.code == service_error.access:
863	self.log.debug("[get_access] Access denied")
864	r = None
865	continue
866	else:
867	raise e
868
869	if r.has_key('RequestAccessResponseBody'):
870	# Through to here we have a valid response, not a fault.
871	# Access denied is a fault, so something better or worse than
872	# access denied has happened.
873	r = r['RequestAccessResponseBody']
874	self.log.debug("[get_access] Access granted")
875	break
876	else:
877	raise service_error(service_error.protocol,
878	"Bad proxy response")
879
880	if not r:
881	raise service_error(service_error.access,
882	"Access denied by %s (%s)" % (tb, uri))
883
884	tbparam[tb] = {
885	"allocID" : r['allocID'],
886	"uri": uri,
887	}
888	if 'service' in r:
889	services.extend(r['service'])
890
891	# Add attributes to parameter space. We don't allow attributes to
892	# overlay any parameters already installed.
893	for a in r.get('fedAttr', []):
894	try:
895	if a['attribute'] and \
896	isinstance(a['attribute'], basestring)\
897	and not tbparam[tb].has_key(a['attribute'].lower()):
898	tbparam[tb][a['attribute'].lower()] = a['value']
899	except KeyError:
900	self.log.error("Bad attribute in response: %s" % a)
901
902	def release_access(self, tb, aid, uri=None):
903	"""
904	Release access to testbed through fedd
905	"""
906
907	if not uri:
908	uri = self.tbmap.get(tb, None)
909	if not uri:
910	raise service_error(service_error.server_config,
911	"Unknown testbed: %s" % tb)
912
913	if self.local_access.has_key(uri):
914	resp = self.local_access[uri].ReleaseAccess(\
915	{ 'ReleaseAccessRequestBody' : {'allocID': aid},},
916	fedid(file=self.cert_file))
917	resp = { 'ReleaseAccessResponseBody': resp }
918	else:
919	resp = self.call_ReleaseAccess(uri, {'allocID': aid},
920	self.cert_file, self.cert_pwd, self.trusted_certs)
921
922	# better error coding
923
924	def remote_splitter(self, uri, desc, master):
925
926	req = {
927	'description' : { 'ns2description': desc },
928	'master': master,
929	'include_fedkit': bool(self.fedkit),
930	'include_gatewaykit': bool(self.gatewaykit)
931	}
932
933	r = self.call_Ns2Split(uri, req, self.cert_file, self.cert_pwd,
934	self.trusted_certs)
935
936	if r.has_key('Ns2SplitResponseBody'):
937	r = r['Ns2SplitResponseBody']
938	if r.has_key('output'):
939	return r['output'].splitlines()
940	else:
941	raise service_error(service_error.protocol,
942	"Bad splitter response (no output)")
943	else:
944	raise service_error(service_error.protocol, "Bad splitter response")
945
946	class start_segment:
947	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
948	cert_pwd=None, trusted_certs=None, caller=None,
949	log_collector=None):
950	self.log = log
951	self.debug = debug
952	self.cert_file = cert_file
953	self.cert_pwd = cert_pwd
954	self.trusted_certs = None
955	self.caller = caller
956	self.testbed = testbed
957	self.log_collector = log_collector
958	self.response = None
959
960	def __call__(self, uri, aid, topo, master, attrs=None, connInfo=None,
961	services=None):
962	req = {
963	'allocID': { 'fedid' : aid },
964	'segmentdescription': {
965	'topdldescription': topo.to_dict(),
966	},
967	'master': master,
968	}
969
970	if connInfo:
971	req['connection'] = connInfo
972	# Add services to request. The master exports, everyone else
973	# imports.
974	if services:
975	svcs = [ x.copy() for x in services]
976	for s in svcs:
977	if master: s['visibility'] = 'export'
978	else: s['visibility'] = 'import'
979	req['service'] = svcs
980	if attrs:
981	req['fedAttr'] = attrs
982
983	try:
984	self.log.debug("Calling StartSegment at %s " % uri)
985	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
986	self.trusted_certs)
987	if r.has_key('StartSegmentResponseBody'):
988	lval = r['StartSegmentResponseBody'].get('allocationLog',
989	None)
990	if lval and self.log_collector:
991	for line in lval.splitlines(True):
992	self.log_collector.write(line)
993	self.response = r
994	else:
995	raise service_error(service_error.internal,
996	"Bad response!?: %s" %r)
997	return True
998	except service_error, e:
999	self.log.error("Start segment failed on %s: %s" % \
1000	(self.testbed, e))
1001	return False
1002
1003
1004
1005	class terminate_segment:
1006	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
1007	cert_pwd=None, trusted_certs=None, caller=None):
1008	self.log = log
1009	self.debug = debug
1010	self.cert_file = cert_file
1011	self.cert_pwd = cert_pwd
1012	self.trusted_certs = None
1013	self.caller = caller
1014	self.testbed = testbed
1015
1016	def __call__(self, uri, aid ):
1017	req = {
1018	'allocID': aid ,
1019	}
1020	try:
1021	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
1022	self.trusted_certs)
1023	return True
1024	except service_error, e:
1025	self.log.error("Terminate segment failed on %s: %s" % \
1026	(self.testbed, e))
1027	return False
1028
1029
1030	def allocate_resources(self, allocated, master, eid, expid,
1031	tbparams, topo, tmpdir, alloc_log=None, log_collector=None,
1032	attrs=None, connInfo={}, services=[]):
1033
1034	started = { } # Testbeds where a sub-experiment started
1035	# successfully
1036
1037	# XXX
1038	fail_soft = False
1039
1040	log = alloc_log or self.log
1041
1042	thread_pool = self.thread_pool(self.nthreads)
1043	threads = [ ]
1044
1045	for tb in allocated.keys():
1046	# Create and start a thread to start the segment, and save it
1047	# to get the return value later
1048	thread_pool.wait_for_slot()
1049	uri = tbparams[tb].get('uri', self.tbmap.get(tb, None))
1050	if not uri:
1051	raise service_error(service_error.internal,
1052	"Unknown testbed %s !?" % tb)
1053
1054	if tbparams[tb].has_key('allocID') and \
1055	tbparams[tb]['allocID'].has_key('fedid'):
1056	aid = tbparams[tb]['allocID']['fedid']
1057	else:
1058	raise service_error(service_error.internal,
1059	"No alloc id for testbed %s !?" % tb)
1060
1061	t = self.pooled_thread(\
1062	target=self.start_segment(log=log, debug=self.debug,
1063	testbed=tb, cert_file=self.cert_file,
1064	cert_pwd=self.cert_pwd,
1065	trusted_certs=self.trusted_certs,
1066	caller=self.call_StartSegment,
1067	log_collector=log_collector),
1068	args=(uri, aid, topo[tb], tb == master,
1069	attrs, connInfo[tb], services),
1070	name=tb,
1071	pdata=thread_pool, trace_file=self.trace_file)
1072	threads.append(t)
1073	t.start()
1074
1075	# Wait until all finish (keep pinging the log, though)
1076	mins = 0
1077	revoked = False
1078	while not thread_pool.wait_for_all_done(60.0):
1079	mins += 1
1080	alloc_log.info("Waiting for sub threads (it has been %d mins)" \
1081	% mins)
1082	if not revoked and \
1083	len([ t.getName() for t in threads if t.rv == False]) > 0:
1084	# a testbed has failed. Revoke this experiment's
1085	# synchronizarion values so that sub experiments will not
1086	# deadlock waiting for synchronization that will never happen
1087	self.log.info("A subexperiment has failed to swap in, " + \
1088	"revoking synch keys")
1089	var_key = "fedid:%s" % expid
1090	for k in self.synch_store.all_keys():
1091	if len(k) > 45 and k[0:46] == var_key:
1092	self.synch_store.revoke_key(k)
1093	revoked = True
1094
1095	failed = [ t.getName() for t in threads if not t.rv ]
1096	succeeded = [tb for tb in allocated.keys() if tb not in failed]
1097
1098	# If one failed clean up, unless fail_soft is set
1099	if failed:
1100	if not fail_soft:
1101	thread_pool.clear()
1102	for tb in succeeded:
1103	# Create and start a thread to stop the segment
1104	thread_pool.wait_for_slot()
1105	uri = tbparams[tb]['uri']
1106	t = self.pooled_thread(\
1107	target=self.terminate_segment(log=log,
1108	testbed=tb,
1109	cert_file=self.cert_file,
1110	cert_pwd=self.cert_pwd,
1111	trusted_certs=self.trusted_certs,
1112	caller=self.call_TerminateSegment),
1113	args=(uri, tbparams[tb]['federant']['allocID']),
1114	name=tb,
1115	pdata=thread_pool, trace_file=self.trace_file)
1116	t.start()
1117	# Wait until all finish (if any are being stopped)
1118	if succeeded:
1119	thread_pool.wait_for_all_done()
1120
1121	# release the allocations
1122	for tb in tbparams.keys():
1123	self.release_access(tb, tbparams[tb]['allocID'],
1124	tbparams[tb].get('uri', None))
1125	# Remove the placeholder
1126	self.state_lock.acquire()
1127	self.state[eid]['experimentStatus'] = 'failed'
1128	if self.state_filename: self.write_state()
1129	self.state_lock.release()
1130
1131	log.error("Swap in failed on %s" % ",".join(failed))
1132	return
1133	else:
1134	log.info("[start_segment]: Experiment %s active" % eid)
1135
1136
1137	# Walk up tmpdir, deleting as we go
1138	if self.cleanup:
1139	log.debug("[start_experiment]: removing %s" % tmpdir)
1140	for path, dirs, files in os.walk(tmpdir, topdown=False):
1141	for f in files:
1142	os.remove(os.path.join(path, f))
1143	for d in dirs:
1144	os.rmdir(os.path.join(path, d))
1145	os.rmdir(tmpdir)
1146	else:
1147	log.debug("[start_experiment]: not removing %s" % tmpdir)
1148
1149	# Insert the experiment into our state and update the disk copy
1150	self.state_lock.acquire()
1151	self.state[expid]['experimentStatus'] = 'active'
1152	self.state[eid] = self.state[expid]
1153	if self.state_filename: self.write_state()
1154	self.state_lock.release()
1155	return
1156
1157
1158	def add_kit(self, e, kit):
1159	"""
1160	Add a Software object created from the list of (install, location)
1161	tuples passed as kit to the software attribute of an object e. We
1162	do this enough to break out the code, but it's kind of a hack to
1163	avoid changing the old tuple rep.
1164	"""
1165
1166	s = [ topdl.Software(install=i, location=l) for i, l in kit]
1167
1168	if isinstance(e.software, list): e.software.extend(s)
1169	else: e.software = s
1170
1171
1172	def create_experiment_state(self, fid, req, expid, expcert,
1173	state='starting'):
1174	"""
1175	Create the initial entry in the experiment's state. The expid and
1176	expcert are the experiment's fedid and certifacte that represents that
1177	ID, which are installed in the experiment state. If the request
1178	includes a suggested local name that is used if possible. If the local
1179	name is already taken by an experiment owned by this user that has
1180	failed, it is overwritten. Otherwise new letters are added until a
1181	valid localname is found. The generated local name is returned.
1182	"""
1183
1184	if req.has_key('experimentID') and \
1185	req['experimentID'].has_key('localname'):
1186	overwrite = False
1187	eid = req['experimentID']['localname']
1188	# If there's an old failed experiment here with the same local name
1189	# and accessible by this user, we'll overwrite it, otherwise we'll
1190	# fall through and do the collision avoidance.
1191	old_expid = self.get_experiment_fedid(eid)
1192	if old_expid and self.check_experiment_access(fid, old_expid):
1193	self.state_lock.acquire()
1194	status = self.state[eid].get('experimentStatus', None)
1195	if status and status == 'failed':
1196	# remove the old access attribute
1197	self.auth.unset_attribute(fid, old_expid)
1198	overwrite = True
1199	del self.state[eid]
1200	del self.state[old_expid]
1201	self.state_lock.release()
1202	self.state_lock.acquire()
1203	while (self.state.has_key(eid) and not overwrite):
1204	eid += random.choice(string.ascii_letters)
1205	# Initial state
1206	self.state[eid] = {
1207	'experimentID' : \
1208	[ { 'localname' : eid }, {'fedid': expid } ],
1209	'experimentStatus': state,
1210	'experimentAccess': { 'X509' : expcert },
1211	'owner': fid,
1212	'log' : [],
1213	}
1214	self.state[expid] = self.state[eid]
1215	if self.state_filename: self.write_state()
1216	self.state_lock.release()
1217	else:
1218	eid = self.exp_stem
1219	for i in range(0,5):
1220	eid += random.choice(string.ascii_letters)
1221	self.state_lock.acquire()
1222	while (self.state.has_key(eid)):
1223	eid = self.exp_stem
1224	for i in range(0,5):
1225	eid += random.choice(string.ascii_letters)
1226	# Initial state
1227	self.state[eid] = {
1228	'experimentID' : \
1229	[ { 'localname' : eid }, {'fedid': expid } ],
1230	'experimentStatus': state,
1231	'experimentAccess': { 'X509' : expcert },
1232	'owner': fid,
1233	'log' : [],
1234	}
1235	self.state[expid] = self.state[eid]
1236	if self.state_filename: self.write_state()
1237	self.state_lock.release()
1238
1239	return eid
1240
1241
1242	def allocate_ips_to_topo(self, top):
1243	"""
1244	Add an ip4_address attribute to all the hosts in the topology, based on
1245	the shared substrates on which they sit. An /etc/hosts file is also
1246	created and returned as a list of hostfiles entries. We also return
1247	the allocator, because we may need to allocate IPs to portals
1248	(specifically DRAGON portals).
1249	"""
1250	subs = sorted(top.substrates,
1251	cmp=lambda x,y: cmp(len(x.interfaces), len(y.interfaces)),
1252	reverse=True)
1253	ips = ip_allocator(int(ip_addr("10.0.0.0")), 2 **24)
1254	ifs = { }
1255	hosts = [ ]
1256
1257	for idx, s in enumerate(subs):
1258	net_size = len(s.interfaces)+2
1259
1260	a = ips.allocate(net_size)
1261	if a :
1262	base, num = a
1263	if num < net_size:
1264	raise service_error(service_error.internal,
1265	"Allocator returned wrong number of IPs??")
1266	else:
1267	raise service_error(service_error.req,
1268	"Cannot allocate IP addresses")
1269	mask = 2
1270	while 2 **mask < net_size:
1271	mask += 1
1272
1273	netmask = ((232-1) ^ (mask2 -1))
1274	print "%d %x" % (mask , netmask)
1275
1276	base += 1
1277	for i in s.interfaces:
1278	i.attribute.append(
1279	topdl.Attribute('ip4_address',
1280	"%s" % ip_addr(base)))
1281	i.attribute.append(
1282	topdl.Attribute('ip4_netmask',
1283	"%s" % ip_addr(int(netmask))))
1284
1285	hname = i.element.name[0]
1286	if ifs.has_key(hname):
1287	hosts.append("%s\t%s-%s %s-%d" % \
1288	(ip_addr(base), hname, s.name, hname,
1289	ifs[hname]))
1290	else:
1291	ifs[hname] = 0
1292	hosts.append("%s\t%s-%s %s-%d %s" % \
1293	(ip_addr(base), hname, s.name, hname,
1294	ifs[hname], hname))
1295
1296	ifs[hname] += 1
1297	base += 1
1298	return hosts, ips
1299
1300	def get_access_to_testbeds(self, testbeds, access_user,
1301	export_project, master, allocated, tbparams, services):
1302	"""
1303	Request access to the various testbeds required for this instantiation
1304	(passed in as testbeds). User, access_user, expoert_project and master
1305	are used to construct the correct requests. Per-testbed parameters are
1306	returned in tbparams.
1307	"""
1308	for tb in testbeds:
1309	self.get_access(tb, None, tbparams, master,
1310	export_project, access_user, services)
1311	allocated[tb] = 1
1312
1313	def split_topology(self, top, topo, testbeds, eid, master, tbparams):
1314	"""
1315	Create the sub-topologies that are needed for experiment instantiation.
1316	"""
1317	for tb in testbeds:
1318	topo[tb] = top.clone()
1319	to_delete = [ ]
1320	# XXX: copy in for loop to simplify
1321	for e in topo[tb].elements:
1322	etb = e.get_attribute('testbed')
1323	if etb and etb != tb:
1324	for i in e.interface:
1325	for s in i.subs:
1326	try:
1327	s.interfaces.remove(i)
1328	except ValueError:
1329	raise service_error(service_error.internal,
1330	"Can't remove interface??")
1331	to_delete.append(e)
1332	for e in to_delete:
1333	topo[tb].elements.remove(e)
1334	topo[tb].make_indices()
1335
1336	for e in [ e for e in topo[tb].elements \
1337	if isinstance(e,topdl.Computer)]:
1338	if self.fedkit: self.add_kit(e, self.fedkit)
1339
1340	def new_portal_node(self, st, dt, tbparams, master, eid, myname, desthost,
1341	portal_type, iface_desc=(), conn_type="ssh", conn_attrs=[],
1342	expid=None):
1343	"""
1344	Return a new internet portal node and a dict with the connectionInfo to
1345	be attached.
1346	"""
1347	dproject = tbparams[dt].get('project', 'project')
1348	ddomain = tbparams[dt].get('domain', ".example.com")
1349	mdomain = tbparams[master].get('domain', '.example.com')
1350	mproject = tbparams[master].get('project', 'project')
1351	muser = tbparams[master].get('user', 'root')
1352	smbshare = tbparams[master].get('smbshare', 'USERS')
1353
1354	if st == master or dt == master:
1355	active = ("%s" % (st == master))
1356	else:
1357	active = ("%s" % (st > dt))
1358
1359	ifaces = [ ]
1360	for sub, attrs in iface_desc:
1361	inf = topdl.Interface(
1362	name="inf%03d" % len(ifaces),
1363	substrate=sub,
1364	attribute=[
1365	topdl.Attribute(
1366	attribute=n,
1367	value = v)
1368	for n, v in attrs
1369	]
1370	)
1371	ifaces.append(inf)
1372	if conn_type == "ssh":
1373	try:
1374	aid = tbparams[st]['allocID']['fedid']
1375	except:
1376	self.log.debug("[new_portal_node] Can't get alloc id for %s?" \
1377	% st)
1378	aid = None
1379	info = {
1380	"type" : conn_type,
1381	"portal": myname,
1382	'fedAttr': [
1383	{ 'attribute': 'masterdomain', 'value': mdomain},
1384	{ 'attribute': 'masterexperiment', 'value':
1385	"%s/%s" % (mproject, eid)},
1386	{ 'attribute': 'active', 'value': active},
1387	# Move to SMB service description
1388	{ 'attribute': 'masteruser', 'value': muser},
1389	{ 'attribute': 'smbshare', 'value': smbshare},
1390	],
1391	'parameter': [
1392	{
1393	'name': 'peer',
1394	'key': 'fedid:%s/%s' % (expid, myname),
1395	'store': self.store_url,
1396	'type': 'output',
1397	},
1398	{
1399	'name': 'ssh_port',
1400	'key': 'fedid:%s/%s-port' % (expid, myname),
1401	'store': self.store_url,
1402	'type': 'output',
1403	},
1404	{
1405	'name': 'peer',
1406	'key': 'fedid:%s/%s' % (expid, desthost),
1407	'store': self.store_url,
1408	'type': 'input',
1409	},
1410	{
1411	'name': 'ssh_port',
1412	'key': 'fedid:%s/%s-port' % (expid, desthost),
1413	'store': self.store_url,
1414	'type': 'input',
1415	},
1416	]
1417	}
1418	# Give this allocation the rights to access the key of the
1419	# peers
1420	if aid:
1421	for h in (myname, desthost):
1422	self.auth.set_attribute(aid, 'fedid:%s/%s' % (expid, h))
1423	self.auth.set_attribute(aid, 'fedid:%s/%s-port' % \
1424	(expid, h))
1425	else:
1426	self.log.error("No aid for %s in new_portal_node" % st)
1427	else:
1428	info = None
1429
1430	return (topdl.Computer(
1431	name=myname,
1432	attribute=[
1433	topdl.Attribute(attribute=n,value=v)
1434	for n, v in (\
1435	('portal', 'true'),
1436	('portal_type', portal_type),
1437	)
1438	],
1439	interface=ifaces,
1440	), info)
1441
1442	def new_portal_substrate(self, st, dt, eid, tbparams, expid):
1443	ddomain = tbparams[dt].get('domain', ".example.com")
1444	dproject = tbparams[dt].get('project', 'project')
1445	tsubstrate = \
1446	topdl.Substrate(name='%s-%s' % (st, dt),
1447	attribute= [
1448	topdl.Attribute(
1449	attribute='portal',
1450	value='true')
1451	]
1452	)
1453	segment_element = topdl.Segment(
1454	id= tbparams[dt]['allocID'],
1455	type='emulab',
1456	uri = self.tbmap.get(dt, None),
1457	interface=[
1458	topdl.Interface(
1459	substrate=tsubstrate.name),
1460	],
1461	attribute = [
1462	topdl.Attribute(attribute=n, value=v)
1463	for n, v in (\
1464	('domain', ddomain),
1465	('experiment', "%s/%s" % \
1466	(dproject, eid)),)
1467	],
1468	)
1469
1470	return (tsubstrate, segment_element)
1471
1472	def new_dragon_topo(self, idx, sub, topo, tbs, tbparams, connInfo, expid):
1473	if sub.capacity is None:
1474	raise service_error(service_error.internal,
1475	"Cannot DRAGON split substrate w/o capacity")
1476	segs = [ ]
1477	substr = topdl.Substrate(name="dragon%d" % idx,
1478	capacity=sub.capacity.clone(),
1479	attribute=[ topdl.Attribute(attribute=n, value=v)
1480	for n, v, in (\
1481	('vlan', 'unassigned%d' % idx),)])
1482	name = "dragon%d" % idx
1483	store_key = 'fedid:%s/vlan%d' % (expid, idx)
1484	for tb in tbs.keys():
1485	seg = topdl.Segment(
1486	id = tbparams[tb]['allocID'],
1487	type='emulab',
1488	uri = self.tbmap.get(tb, None),
1489	interface=[
1490	topdl.Interface(
1491	substrate=substr.name),
1492	],
1493	attribute=[ topdl.Attribute(
1494	attribute='dragon_endpoint',
1495	value=tbparams[tb]['dragon']),
1496	]
1497	)
1498	if tbparams[tb].has_key('vlans'):
1499	seg.set_attribute('vlans', tbparams[tb]['vlans'])
1500	segs.append(seg)
1501
1502	# Give this allocation the rights to access the key of the
1503	# vlan_id
1504	try:
1505	aid = tbparams[tb]['allocID']['fedid']
1506	self.auth.set_attribute(aid, store_key)
1507	except:
1508	self.log.debug("[new_dragon_topo] Can't get alloc id for %s?"\
1509	% tb)
1510
1511	connInfo[name] = [ {
1512	'type': 'transit',
1513	'parameter': [ {
1514	'name': 'vlan_id',
1515	'key': store_key,
1516	'store': self.store_url,
1517	'type': 'output'
1518	} ]
1519	} ]
1520
1521	topo[name] = \
1522	topdl.Topology(substrates=[substr], elements=segs,
1523	attribute=[
1524	topdl.Attribute(attribute="transit", value='true'),
1525	topdl.Attribute(attribute="dynamic", value='true'),
1526	topdl.Attribute(attribute="testbed",
1527	value='dragon'),
1528	topdl.Attribute(attribute="store_keys",
1529	value=store_key),
1530	]
1531	)
1532
1533	def create_dragon_substrate(self, sub, topo, tbs, tbparams, master, eid,
1534	connInfo, expid=None):
1535	"""
1536	Add attribiutes to the various elements indicating that they are to be
1537	dragon connected and create a dragon segment in topo to be
1538	instantiated.
1539	"""
1540
1541	def get_substrate_from_topo(name, t):
1542	for s in t.substrates:
1543	if s.name == name: return s
1544	else: return None
1545
1546
1547	mdomain = tbparams[master].get('domain', '.example.com')
1548	mproject = tbparams[master].get('project', 'project')
1549	# dn is the number of previously created dragon nets. This routine
1550	# creates a net numbered by dn
1551	dn = len([x for x in topo.keys() if x.startswith('dragon')])
1552	# Count the number of interfaces on this substrate in each testbed from
1553	# the global topology
1554	count = { }
1555	node = { }
1556	for e in [ i.element for i in sub.interfaces ]:
1557	tb = e.get_attribute('testbed')
1558	count[tb] = count.get(tb, 0) + 1
1559	node[tb] = i.get_attribute('ip4_address')
1560
1561
1562	# Set the attributes in the copies that will allow setup of dragon
1563	# connections.
1564	for tb in tbs.keys():
1565	s = get_substrate_from_topo(sub.name, topo[tb])
1566	if s:
1567	if not connInfo.has_key(tb):
1568	connInfo[tb] = [ ]
1569
1570	try:
1571	aid = tbparams[tb]['allocID']['fedid']
1572	except:
1573	self.log.debug("[creat_dragon_substrate] " +
1574	"Can't get alloc id for %s?" %tb)
1575	aid = None
1576
1577	# This may need another look, but only a service gateway will
1578	# look at the active parameter, and these are only inserted to
1579	# connect to the master.
1580	active = "%s" % ( tb == master)
1581	info = {
1582	'type': 'transit',
1583	'member': [ {
1584	'element': i.element.name[0],
1585	'interface': i.name
1586	} for i in s.interfaces \
1587	if isinstance(i.element, topdl.Computer) ],
1588	'fedAttr': [
1589	{ 'attribute': 'masterdomain', 'value': mdomain},
1590	{ 'attribute': 'masterexperiment', 'value':
1591	"%s/%s" % (mproject, eid)},
1592	{ 'attribute': 'active', 'value': active},
1593	],
1594	'parameter': [ {
1595	'name': 'vlan_id',
1596	'key': 'fedid:%s/vlan%d' % (expid, dn),
1597	'store': self.store_url,
1598	'type': 'input',
1599	} ]
1600	}
1601	if tbs.has_key(tb):
1602	info['peer'] = tbs[tb]
1603	connInfo[tb].append(info)
1604
1605	# Give this allocation the rights to access the key of the
1606	# vlan_id
1607	if aid:
1608	self.auth.set_attribute(aid,
1609	'fedid:%s/vlan%d' % (expid, dn))
1610	else:
1611	raise service_error(service_error.internal,
1612	"No substrate %s in testbed %s" % (sub.name, tb))
1613
1614	self.new_dragon_topo(dn, sub, topo, tbs, tbparams, connInfo, expid)
1615
1616	def insert_internet_portals(self, sub, topo, tbs, tbparams, master, eid,
1617	segment_substrate, portals, connInfo, expid):
1618	# More than one testbed is on this substrate. Insert
1619	# some portals into the subtopologies. st == source testbed,
1620	# dt == destination testbed.
1621	for st in tbs.keys():
1622	if not segment_substrate.has_key(st):
1623	segment_substrate[st] = { }
1624	if not portals.has_key(st):
1625	portals[st] = { }
1626	if not connInfo.has_key(st):
1627	connInfo[st] = [ ]
1628	for dt in [ t for t in tbs.keys() if t != st]:
1629	sproject = tbparams[st].get('project', 'project')
1630	dproject = tbparams[dt].get('project', 'project')
1631	mproject = tbparams[master].get('project', 'project')
1632	sdomain = tbparams[st].get('domain', ".example.com")
1633	ddomain = tbparams[dt].get('domain', ".example.com")
1634	mdomain = tbparams[master].get('domain', '.example.com')
1635	muser = tbparams[master].get('user', 'root')
1636	smbshare = tbparams[master].get('smbshare', 'USERS')
1637	aid = tbparams[dt]['allocID']['fedid']
1638	if st == master or dt == master:
1639	active = ("%s" % (st == master))
1640	else:
1641	active = ("%s" %(st > dt))
1642	if not segment_substrate[st].has_key(dt):
1643	# Put a substrate and a segment for the connected
1644	# testbed in there.
1645	tsubstrate, segment_element = \
1646	self.new_portal_substrate(st, dt, eid, tbparams,
1647	expid)
1648	segment_substrate[st][dt] = tsubstrate
1649	topo[st].substrates.append(tsubstrate)
1650	topo[st].elements.append(segment_element)
1651
1652	new_portal = False
1653	if portals[st].has_key(dt):
1654	# There's a portal set up to go to this destination.
1655	# See if there's room to multiplex this connection on
1656	# it. If so, add an interface to the portal; if not,
1657	# set up to add a portal below.
1658	# [This little festival of braces is just a pop of the
1659	# last element in the list of portals between st and
1660	# dt.]
1661	portal = portals[st][dt][-1]
1662	mux = len([ i for i in portal.interface \
1663	if not i.get_attribute('portal')])
1664	if mux == self.muxmax:
1665	new_portal = True
1666	portal_type = "experiment"
1667	myname = "%stunnel%d" % (dt, len(portals[st][dt]))
1668	desthost = "%stunnel%d" % (st.lower(),
1669	len(portals[st][dt]))
1670	else:
1671	new_i = topdl.Interface(
1672	substrate=sub.name,
1673	attribute=[
1674	topdl.Attribute(
1675	attribute='ip4_address',
1676	value=tbs[dt]
1677	)
1678	])
1679	portal.interface.append(new_i)
1680	else:
1681	# First connection to this testbed, make an empty list
1682	# and set up to add the new portal below
1683	new_portal = True
1684	portals[st][dt] = [ ]
1685	myname = "%stunnel%d" % (dt, len(portals[st][dt]))
1686	desthost = "%stunnel%d" % (st.lower(), len(portals[st][dt]))
1687
1688	if dt == master or st == master: portal_type = "both"
1689	else: portal_type = "experiment"
1690
1691	if new_portal:
1692	infs = (
1693	(segment_substrate[st][dt].name,
1694	(('portal', 'true'),)),
1695	(sub.name,
1696	(('ip4_address', tbs[dt]),))
1697	)
1698	portal, info = self.new_portal_node(st, dt, tbparams,
1699	master, eid, myname, desthost, portal_type,
1700	infs, conn_type="ssh", conn_attrs=[], expid=expid)
1701	if self.fedkit:
1702	self.add_kit(portal, self.fedkit)
1703	if self.gatewaykit:
1704	self.add_kit(portal, self.gatewaykit)
1705
1706	topo[st].elements.append(portal)
1707	portals[st][dt].append(portal)
1708	connInfo[st].append(info)
1709
1710	def add_control_portal(self, st, dt, master, eid, topo, tbparams, connInfo, expid):
1711	# Add to the master testbed
1712	tsubstrate, segment_element = \
1713	self.new_portal_substrate(st, dt, eid, tbparams, expid)
1714	myname = "%stunnel" % dt
1715	desthost = "%stunnel" % st
1716
1717	portal, info = self.new_portal_node(st, dt, tbparams, master,
1718	eid, myname, desthost, "control",
1719	((tsubstrate.name,(('portal','true'),)),), conn_type="ssh",
1720	conn_attrs=[], expid=expid)
1721	if self.fedkit:
1722	self.add_kit(portal, self.fedkit)
1723	if self.gatewaykit:
1724	self.add_kit(portal, self.gatewaykit)
1725
1726	topo[st].substrates.append(tsubstrate)
1727	topo[st].elements.append(segment_element)
1728	topo[st].elements.append(portal)
1729	if not connInfo.has_key(st):
1730	connInfo[st] = [ ]
1731	connInfo[st].append(info)
1732
1733	def new_dragon_portal(self, st, dt, master, eid, myip, dip, idx,
1734	substrate, tbparams, expid):
1735	# Add to the master testbed
1736	myname = "%stunnel" % dt
1737	desthost = "%s" % ip_addr(dip)
1738
1739	portal, info = self.new_portal_node(st, dt, tbparams, master,
1740	eid, myname, desthost, "control",
1741	((substrate.name,(
1742	('portal','true'),
1743	('ip4_address', "%s" % ip_addr(myip)),)),),
1744	conn_type="transit", conn_attrs=[], expid=expid)
1745	if self.fedkit:
1746	self.add_kit(portal, self.fedkit)
1747	if self.gatewaykit:
1748	self.add_kit(portal, self.gatewaykit)
1749
1750	return portal
1751
1752	def add_portals(self, top, topo, eid, master, tbparams, ip_allocator,
1753	connInfo, expid):
1754	"""
1755	For each substrate in the main topology, find those that
1756	have nodes on more than one testbed. Insert portal nodes
1757	into the copies of those substrates on the sub topologies.
1758	"""
1759	segment_substrate = { }
1760	portals = { }
1761	for s in top.substrates:
1762	# tbs will contain an ip address on this subsrate that is in
1763	# each testbed.
1764	tbs = { }
1765	for i in s.interfaces:
1766	e = i.element
1767	tb = e.get_attribute('testbed')
1768	if tb and not tbs.has_key(tb):
1769	for i in e.interface:
1770	if s in i.subs:
1771	tbs[tb]= i.get_attribute('ip4_address')
1772	if len(tbs) < 2:
1773	continue
1774
1775	# DRAGON will not create multi-site vlans yet
1776	if len(tbs) == 2 and \
1777	all([tbparams[x].has_key('dragon') for x in tbs]):
1778	self.create_dragon_substrate(s, topo, tbs, tbparams,
1779	master, eid, connInfo, expid)
1780	else:
1781	self.insert_internet_portals(s, topo, tbs, tbparams, master,
1782	eid, segment_substrate, portals, connInfo, expid)
1783
1784	# Make sure that all the slaves have a control portal back to the
1785	# master.
1786	for tb in [ t for t in tbparams.keys() if t != master ]:
1787	if len([e for e in topo[tb].elements \
1788	if isinstance(e, topdl.Computer) and \
1789	e.get_attribute('portal') and \
1790	e.get_attribute('portal_type') == 'both']) == 0:
1791
1792	if tbparams[master].has_key('dragon') \
1793	and tbparams[tb].has_key('dragon'):
1794
1795	idx = len([x for x in topo.keys() \
1796	if x.startswith('dragon')])
1797	dip, leng = ip_allocator.allocate(4)
1798	dip += 1
1799	mip = dip+1
1800	csub = topdl.Substrate(
1801	name="dragon-control-%s" % tb,
1802	capacity=topdl.Capacity(100000.0, 'max'),
1803	attribute=[
1804	topdl.Attribute(
1805	attribute='portal',
1806	value='true'
1807	)
1808	]
1809	)
1810	seg = topdl.Segment(
1811	id= tbparams[master]['allocID'],
1812	type='emulab',
1813	uri = self.tbmap.get(master, None),
1814	interface=[
1815	topdl.Interface(
1816	substrate=csub.name),
1817	],
1818	attribute = [
1819	topdl.Attribute(attribute=n, value=v)
1820	for n, v in (\
1821	('domain',
1822	tbparams[master].get('domain',
1823	".example.com")),
1824	('experiment', "%s/%s" % \
1825	(tbparams[master].get(
1826	'project',
1827	'project'),
1828	eid)),)
1829	],
1830	)
1831	portal = self.new_dragon_portal(tb, master,
1832	master, eid, dip, mip, idx, csub, tbparams, expid)
1833	topo[tb].substrates.append(csub)
1834	topo[tb].elements.append(portal)
1835	topo[tb].elements.append(seg)
1836
1837	mcsub = csub.clone()
1838	seg = topdl.Segment(
1839	id= tbparams[tb]['allocID'],
1840	type='emulab',
1841	uri = self.tbmap.get(tb, None),
1842	interface=[
1843	topdl.Interface(
1844	substrate=csub.name),
1845	],
1846	attribute = [
1847	topdl.Attribute(attribute=n, value=v)
1848	for n, v in (\
1849	('domain',
1850	tbparams[tb].get('domain',
1851	".example.com")),
1852	('experiment', "%s/%s" % \
1853	(tbparams[tb].get('project',
1854	'project'),
1855	eid)),)
1856	],
1857	)
1858	portal = self.new_dragon_portal(master, tb, master,
1859	eid, mip, dip, idx, mcsub, tbparams, expid)
1860	topo[master].substrates.append(mcsub)
1861	topo[master].elements.append(portal)
1862	topo[master].elements.append(seg)
1863	for t in (master, tb):
1864	topo[t].incorporate_elements()
1865
1866	self.create_dragon_substrate(csub, topo,
1867	{tb: ip_addr(mip), master: ip_addr(dip)},
1868	tbparams, master, eid, connInfo,
1869	expid)
1870	else:
1871	self.add_control_portal(master, tb, master, eid, topo,
1872	tbparams, connInfo, expid)
1873	self.add_control_portal(tb, master, master, eid, topo,
1874	tbparams, connInfo, expid)
1875
1876	# Connect the portal nodes into the topologies and clear out
1877	# substrates that are not in the topologies
1878	for tb in tbparams.keys():
1879	topo[tb].incorporate_elements()
1880	topo[tb].substrates = \
1881	[s for s in topo[tb].substrates \
1882	if len(s.interfaces) >0]
1883
1884	def wrangle_software(self, expid, top, topo, tbparams):
1885	"""
1886	Copy software out to the repository directory, allocate permissions and
1887	rewrite the segment topologies to look for the software in local
1888	places.
1889	"""
1890
1891	# Copy the rpms and tarfiles to a distribution directory from
1892	# which the federants can retrieve them
1893	linkpath = "%s/software" % expid
1894	softdir ="%s/%s" % ( self.repodir, linkpath)
1895	softmap = { }
1896	# These are in a list of tuples format (each kit). This comprehension
1897	# unwraps them into a single list of tuples that initilaizes the set of
1898	# tuples.
1899	pkgs = set([ t for l in [self.fedkit, self.gatewaykit] \
1900	for p, t in l ])
1901	pkgs.update([x.location for e in top.elements \
1902	for x in e.software])
1903	try:
1904	os.makedirs(softdir)
1905	except IOError, e:
1906	raise service_error(
1907	"Cannot create software directory: %s" % e)
1908	# The actual copying. Everything's converted into a url for copying.
1909	for pkg in pkgs:
1910	loc = pkg
1911
1912	scheme, host, path = urlparse(loc)[0:3]
1913	dest = os.path.basename(path)
1914	if not scheme:
1915	if not loc.startswith('/'):
1916	loc = "/%s" % loc
1917	loc = "file://%s" %loc
1918	try:
1919	u = urlopen(loc)
1920	except Exception, e:
1921	raise service_error(service_error.req,
1922	"Cannot open %s: %s" % (loc, e))
1923	try:
1924	f = open("%s/%s" % (softdir, dest) , "w")
1925	self.log.debug("Writing %s/%s" % (softdir,dest) )
1926	data = u.read(4096)
1927	while data:
1928	f.write(data)
1929	data = u.read(4096)
1930	f.close()
1931	u.close()
1932	except Exception, e:
1933	raise service_error(service_error.internal,
1934	"Could not copy %s: %s" % (loc, e))
1935	path = re.sub("/tmp", "", linkpath)
1936	# XXX
1937	softmap[pkg] = \
1938	"%s/%s/%s" %\
1939	( self.repo_url, path, dest)
1940
1941	# Allow the individual segments to access the software.
1942	for tb in tbparams.keys():
1943	self.auth.set_attribute(tbparams[tb]['allocID']['fedid'],
1944	"/%s/%s" % ( path, dest))
1945
1946	# Convert the software locations in the segments into the local
1947	# copies on this host
1948	for soft in [ s for tb in topo.values() \
1949	for e in tb.elements \
1950	if getattr(e, 'software', False) \
1951	for s in e.software ]:
1952	if softmap.has_key(soft.location):
1953	soft.location = softmap[soft.location]
1954
1955
1956	def new_experiment(self, req, fid):
1957	"""
1958	The external interface to empty initial experiment creation called from
1959	the dispatcher.
1960
1961	Creates a working directory, splits the incoming description using the
1962	splitter script and parses out the avrious subsections using the
1963	lcasses above. Once each sub-experiment is created, use pooled threads
1964	to instantiate them and start it all up.
1965	"""
1966	if not self.auth.check_attribute(fid, 'new'):
1967	raise service_error(service_error.access, "New access denied")
1968
1969	try:
1970	tmpdir = tempfile.mkdtemp(prefix="split-")
1971	except IOError:
1972	raise service_error(service_error.internal, "Cannot create tmp dir")
1973
1974	try:
1975	access_user = self.accessdb[fid]
1976	except KeyError:
1977	raise service_error(service_error.internal,
1978	"Access map and authorizer out of sync in " + \
1979	"new_experiment for fedid %s" % fid)
1980
1981	pid = "dummy"
1982	gid = "dummy"
1983
1984	req = req.get('NewRequestBody', None)
1985	if not req:
1986	raise service_error(service_error.req,
1987	"Bad request format (no NewRequestBody)")
1988
1989	# Generate an ID for the experiment (slice) and a certificate that the
1990	# allocator can use to prove they own it. We'll ship it back through
1991	# the encrypted connection.
1992	(expid, expcert) = generate_fedid("test", dir=tmpdir, log=self.log)
1993
1994	#now we're done with the tmpdir, and it should be empty
1995	if self.cleanup:
1996	self.log.debug("[new_experiment]: removing %s" % tmpdir)
1997	os.rmdir(tmpdir)
1998	else:
1999	self.log.debug("[new_experiment]: not removing %s" % tmpdir)
2000
2001	eid = self.create_experiment_state(fid, req, expid, expcert,
2002	state='empty')
2003
2004	# Let users touch the state
2005	self.auth.set_attribute(fid, expid)
2006	self.auth.set_attribute(expid, expid)
2007	# Override fedids can manipulate state as well
2008	for o in self.overrides:
2009	self.auth.set_attribute(o, expid)
2010
2011	rv = {
2012	'experimentID': [
2013	{'localname' : eid }, { 'fedid': copy.copy(expid) }
2014	],
2015	'experimentStatus': 'empty',
2016	'experimentAccess': { 'X509' : expcert }
2017	}
2018
2019	return rv
2020
2021
2022	def create_experiment(self, req, fid):
2023	"""
2024	The external interface to experiment creation called from the
2025	dispatcher.
2026
2027	Creates a working directory, splits the incoming description using the
2028	splitter script and parses out the avrious subsections using the
2029	lcasses above. Once each sub-experiment is created, use pooled threads
2030	to instantiate them and start it all up.
2031	"""
2032
2033	req = req.get('CreateRequestBody', None)
2034	if not req:
2035	raise service_error(service_error.req,
2036	"Bad request format (no CreateRequestBody)")
2037
2038	# Get the experiment access
2039	exp = req.get('experimentID', None)
2040	if exp:
2041	if exp.has_key('fedid'):
2042	key = exp['fedid']
2043	expid = key
2044	eid = None
2045	elif exp.has_key('localname'):
2046	key = exp['localname']
2047	eid = key
2048	expid = None
2049	else:
2050	raise service_error(service_error.req, "Unknown lookup type")
2051	else:
2052	raise service_error(service_error.req, "No request?")
2053
2054	self.check_experiment_access(fid, key)
2055
2056	try:
2057	tmpdir = tempfile.mkdtemp(prefix="split-")
2058	os.mkdir(tmpdir+"/keys")
2059	except IOError:
2060	raise service_error(service_error.internal, "Cannot create tmp dir")
2061
2062	gw_pubkey_base = "fed.%s.pub" % self.ssh_type
2063	gw_secretkey_base = "fed.%s" % self.ssh_type
2064	gw_pubkey = tmpdir + "/keys/" + gw_pubkey_base
2065	gw_secretkey = tmpdir + "/keys/" + gw_secretkey_base
2066	tclfile = tmpdir + "/experiment.tcl"
2067	tbparams = { }
2068	try:
2069	access_user = self.accessdb[fid]
2070	except KeyError:
2071	raise service_error(service_error.internal,
2072	"Access map and authorizer out of sync in " + \
2073	"create_experiment for fedid %s" % fid)
2074
2075	pid = "dummy"
2076	gid = "dummy"
2077
2078	# The tcl parser needs to read a file so put the content into that file
2079	descr=req.get('experimentdescription', None)
2080	if descr:
2081	file_content=descr.get('ns2description', None)
2082	if file_content:
2083	try:
2084	f = open(tclfile, 'w')
2085	f.write(file_content)
2086	f.close()
2087	except IOError:
2088	raise service_error(service_error.internal,
2089	"Cannot write temp experiment description")
2090	else:
2091	raise service_error(service_error.req,
2092	"Only ns2descriptions supported")
2093	else:
2094	raise service_error(service_error.req, "No experiment description")
2095
2096	self.state_lock.acquire()
2097	if self.state.has_key(key):
2098	self.state[key]['experimentStatus'] = "starting"
2099	for e in self.state[key].get('experimentID',[]):
2100	if not expid and e.has_key('fedid'):
2101	expid = e['fedid']
2102	elif not eid and e.has_key('localname'):
2103	eid = e['localname']
2104	self.state_lock.release()
2105
2106	if not (eid and expid):
2107	raise service_error(service_error.internal,
2108	"Cannot find local experiment info!?")
2109
2110	try:
2111	# This catches exceptions to clear the placeholder if necessary
2112	try:
2113	self.generate_ssh_keys(gw_secretkey, self.ssh_type)
2114	except ValueError:
2115	raise service_error(service_error.server_config,
2116	"Bad key type (%s)" % self.ssh_type)
2117
2118	master = req.get('master', None)
2119	if not master:
2120	raise service_error(service_error.req,
2121	"No master testbed label")
2122	export_project = req.get('exportProject', None)
2123	if not export_project:
2124	raise service_error(service_error.req, "No export project")
2125
2126	# Translate to topdl
2127	if self.splitter_url:
2128	# XXX: need remote topdl translator
2129	self.log.debug("Calling remote splitter at %s" % \
2130	self.splitter_url)
2131	split_data = self.remote_splitter(self.splitter_url,
2132	file_content, master)
2133	else:
2134	tclcmd = [self.tclsh, self.tcl_splitter, '-t', '-x',
2135	str(self.muxmax), '-m', master]
2136
2137	if self.fedkit:
2138	tclcmd.append('-k')
2139
2140	if self.gatewaykit:
2141	tclcmd.append('-K')
2142
2143	tclcmd.extend([pid, gid, eid, tclfile])
2144
2145	self.log.debug("running local splitter %s", " ".join(tclcmd))
2146	# This is just fantastic. As a side effect the parser copies
2147	# tb_compat.tcl into the current directory, so that directory
2148	# must be writable by the fedd user. Doing this in the
2149	# temporary subdir ensures this is the case.
2150	tclparser = Popen(tclcmd, stdout=PIPE, close_fds=True,
2151	cwd=tmpdir)
2152	split_data = tclparser.stdout
2153
2154	top = topdl.topology_from_xml(file=split_data, top="experiment")
2155
2156	hosts, ip_allocator = self.allocate_ips_to_topo(top)
2157	# Find the testbeds to look up
2158	testbeds = set([ a.value for e in top.elements \
2159	for a in e.attribute \
2160	if a.attribute == 'testbed'] )
2161
2162	allocated = { } # Testbeds we can access
2163	topo ={ } # Sub topologies
2164	connInfo = { } # Connection information
2165	services = [ ]
2166	self.get_access_to_testbeds(testbeds, access_user,
2167	export_project, master, allocated, tbparams, services)
2168	self.split_topology(top, topo, testbeds, eid, master, tbparams)
2169
2170	# Copy configuration files into the remote file store
2171	# The config urlpath
2172	configpath = "/%s/config" % expid
2173	# The config file system location
2174	configdir ="%s%s" % ( self.repodir, configpath)
2175	try:
2176	os.makedirs(configdir)
2177	except IOError, e:
2178	raise service_error(
2179	"Cannot create config directory: %s" % e)
2180	try:
2181	f = open("%s/hosts" % configdir, "w")
2182	f.write('\n'.join(hosts))
2183	f.close()
2184	except IOError, e:
2185	raise service_error(service_error.internal,
2186	"Cannot write hosts file: %s" % e)
2187	try:
2188	copy_file("%s" % gw_pubkey, "%s/%s" % \
2189	(configdir, gw_pubkey_base))
2190	copy_file("%s" % gw_secretkey, "%s/%s" % \
2191	(configdir, gw_secretkey_base))
2192	except IOError, e:
2193	raise service_error(service_error.internal,
2194	"Cannot copy keyfiles: %s" % e)
2195
2196	# Allow the individual testbeds to access the configuration files.
2197	for tb in tbparams.keys():
2198	asignee = tbparams[tb]['allocID']['fedid']
2199	for f in ("hosts", gw_secretkey_base, gw_pubkey_base):
2200	self.auth.set_attribute(asignee, "%s/%s" % (configpath, f))
2201
2202	self.add_portals(top, topo, eid, master, tbparams, ip_allocator,
2203	connInfo, expid)
2204	# Now get access to the dynamic testbeds
2205	for k, t in topo.items():
2206	if not t.get_attribute('dynamic'):
2207	continue
2208	tb = t.get_attribute('testbed')
2209	if tb:
2210	self.get_access(tb, None, tbparams, master,
2211	export_project, access_user, services)
2212	tbparams[k] = tbparams[tb]
2213	del tbparams[tb]
2214	allocated[k] = 1
2215	store_keys = t.get_attribute('store_keys')
2216	# Give the testbed access to keys it exports or imports
2217	if store_keys:
2218	for sk in store_keys.split(" "):
2219	self.auth.set_attribute(\
2220	tbparams[k]['allocID']['fedid'], sk)
2221	else:
2222	raise service_error(service_error.internal,
2223	"Dynamic allocation from no testbed!?")
2224
2225	self.wrangle_software(expid, top, topo, tbparams)
2226
2227	vtopo = topdl.topology_to_vtopo(top)
2228	vis = self.genviz(vtopo)
2229
2230	# save federant information
2231	for k in allocated.keys():
2232	tbparams[k]['federant'] = {
2233	'name': [ { 'localname' : eid} ],
2234	'allocID' : tbparams[k]['allocID'],
2235	'master' : k == master,
2236	'uri': tbparams[k]['uri'],
2237	}
2238	if tbparams[k].has_key('emulab'):
2239	tbparams[k]['federant']['emulab'] = \
2240	tbparams[k]['emulab']
2241
2242	self.state_lock.acquire()
2243	self.state[eid]['vtopo'] = vtopo
2244	self.state[eid]['vis'] = vis
2245	self.state[expid]['federant'] = \
2246	[ tbparams[tb]['federant'] for tb in tbparams.keys() \
2247	if tbparams[tb].has_key('federant') ]
2248	if self.state_filename:
2249	self.write_state()
2250	self.state_lock.release()
2251	except service_error, e:
2252	# If something goes wrong in the parse (usually an access error)
2253	# clear the placeholder state. From here on out the code delays
2254	# exceptions. Failing at this point returns a fault to the remote
2255	# caller.
2256
2257	self.state_lock.acquire()
2258	del self.state[eid]
2259	del self.state[expid]
2260	if self.state_filename: self.write_state()
2261	self.state_lock.release()
2262	raise e
2263
2264
2265	# Start the background swapper and return the starting state. From
2266	# here on out, the state will stick around a while.
2267
2268	# Let users touch the state
2269	self.auth.set_attribute(fid, expid)
2270	self.auth.set_attribute(expid, expid)
2271	# Override fedids can manipulate state as well
2272	for o in self.overrides:
2273	self.auth.set_attribute(o, expid)
2274
2275	# Create a logger that logs to the experiment's state object as well as
2276	# to the main log file.
2277	alloc_log = logging.getLogger('fedd.experiment_control.%s' % eid)
2278	alloc_collector = self.list_log(self.state[eid]['log'])
2279	h = logging.StreamHandler(alloc_collector)
2280	# XXX: there should be a global one of these rather than repeating the
2281	# code.
2282	h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s",
2283	'%d %b %y %H:%M:%S'))
2284	alloc_log.addHandler(h)
2285
2286	attrs = [
2287	{
2288	'attribute': 'ssh_pubkey',
2289	'value': '%s/%s/config/%s' % \
2290	(self.repo_url, expid, gw_pubkey_base)
2291	},
2292	{
2293	'attribute': 'ssh_secretkey',
2294	'value': '%s/%s/config/%s' % \
2295	(self.repo_url, expid, gw_secretkey_base)
2296	},
2297	{
2298	'attribute': 'hosts',
2299	'value': '%s/%s/config/hosts' % \
2300	(self.repo_url, expid)
2301	},
2302	{
2303	'attribute': 'experiment_name',
2304	'value': eid,
2305	},
2306	]
2307
2308	# transit and disconnected testbeds may not have a connInfo entry.
2309	# Fill in the blanks.
2310	for t in allocated.keys():
2311	if not connInfo.has_key(t):
2312	connInfo[t] = { }
2313
2314	# Start a thread to do the resource allocation
2315	t = Thread(target=self.allocate_resources,
2316	args=(allocated, master, eid, expid, tbparams,
2317	topo, tmpdir, alloc_log, alloc_collector, attrs, connInfo,
2318	services),
2319	name=eid)
2320	t.start()
2321
2322	rv = {
2323	'experimentID': [
2324	{'localname' : eid }, { 'fedid': copy.copy(expid) }
2325	],
2326	'experimentStatus': 'starting',
2327	}
2328
2329	return rv
2330
2331	def get_experiment_fedid(self, key):
2332	"""
2333	find the fedid associated with the localname key in the state database.
2334	"""
2335
2336	rv = None
2337	self.state_lock.acquire()
2338	if self.state.has_key(key):
2339	if isinstance(self.state[key], dict):
2340	try:
2341	kl = [ f['fedid'] for f in \
2342	self.state[key]['experimentID']\
2343	if f.has_key('fedid') ]
2344	except KeyError:
2345	self.state_lock.release()
2346	raise service_error(service_error.internal,
2347	"No fedid for experiment %s when getting "+\
2348	"fedid(!?)" % key)
2349	if len(kl) == 1:
2350	rv = kl[0]
2351	else:
2352	self.state_lock.release()
2353	raise service_error(service_error.internal,
2354	"multiple fedids for experiment %s when " +\
2355	"getting fedid(!?)" % key)
2356	else:
2357	self.state_lock.release()
2358	raise service_error(service_error.internal,
2359	"Unexpected state for %s" % key)
2360	self.state_lock.release()
2361	return rv
2362
2363	def check_experiment_access(self, fid, key):
2364	"""
2365	Confirm that the fid has access to the experiment. Though a request
2366	may be made in terms of a local name, the access attribute is always
2367	the experiment's fedid.
2368	"""
2369	if not isinstance(key, fedid):
2370	key = self.get_experiment_fedid(key)
2371
2372	if self.auth.check_attribute(fid, key):
2373	return True
2374	else:
2375	raise service_error(service_error.access, "Access Denied")
2376
2377
2378	def get_handler(self, path, fid):
2379	self.log.info("Get handler %s %s" % (path, fid))
2380	if self.auth.check_attribute(fid, path):
2381	return ("%s/%s" % (self.repodir, path), "application/binary")
2382	else:
2383	return (None, None)
2384
2385	def get_vtopo(self, req, fid):
2386	"""
2387	Return the stored virtual topology for this experiment
2388	"""
2389	rv = None
2390	state = None
2391
2392	req = req.get('VtopoRequestBody', None)
2393	if not req:
2394	raise service_error(service_error.req,
2395	"Bad request format (no VtopoRequestBody)")
2396	exp = req.get('experiment', None)
2397	if exp:
2398	if exp.has_key('fedid'):
2399	key = exp['fedid']
2400	keytype = "fedid"
2401	elif exp.has_key('localname'):
2402	key = exp['localname']
2403	keytype = "localname"
2404	else:
2405	raise service_error(service_error.req, "Unknown lookup type")
2406	else:
2407	raise service_error(service_error.req, "No request?")
2408
2409	self.check_experiment_access(fid, key)
2410
2411	self.state_lock.acquire()
2412	if self.state.has_key(key):
2413	if self.state[key].has_key('vtopo'):
2414	rv = { 'experiment' : {keytype: key },\
2415	'vtopo': self.state[key]['vtopo'],\
2416	}
2417	else:
2418	state = self.state[key]['experimentStatus']
2419	self.state_lock.release()
2420
2421	if rv: return rv
2422	else:
2423	if state:
2424	raise service_error(service_error.partial,
2425	"Not ready: %s" % state)
2426	else:
2427	raise service_error(service_error.req, "No such experiment")
2428
2429	def get_vis(self, req, fid):
2430	"""
2431	Return the stored visualization for this experiment
2432	"""
2433	rv = None
2434	state = None
2435
2436	req = req.get('VisRequestBody', None)
2437	if not req:
2438	raise service_error(service_error.req,
2439	"Bad request format (no VisRequestBody)")
2440	exp = req.get('experiment', None)
2441	if exp:
2442	if exp.has_key('fedid'):
2443	key = exp['fedid']
2444	keytype = "fedid"
2445	elif exp.has_key('localname'):
2446	key = exp['localname']
2447	keytype = "localname"
2448	else:
2449	raise service_error(service_error.req, "Unknown lookup type")
2450	else:
2451	raise service_error(service_error.req, "No request?")
2452
2453	self.check_experiment_access(fid, key)
2454
2455	self.state_lock.acquire()
2456	if self.state.has_key(key):
2457	if self.state[key].has_key('vis'):
2458	rv = { 'experiment' : {keytype: key },\
2459	'vis': self.state[key]['vis'],\
2460	}
2461	else:
2462	state = self.state[key]['experimentStatus']
2463	self.state_lock.release()
2464
2465	if rv: return rv
2466	else:
2467	if state:
2468	raise service_error(service_error.partial,
2469	"Not ready: %s" % state)
2470	else:
2471	raise service_error(service_error.req, "No such experiment")
2472
2473	def clean_info_response(self, rv):
2474	"""
2475	Remove the information in the experiment's state object that is not in
2476	the info response.
2477	"""
2478	# Remove the owner info (should always be there, but...)
2479	if rv.has_key('owner'): del rv['owner']
2480
2481	# Convert the log into the allocationLog parameter and remove the
2482	# log entry (with defensive programming)
2483	if rv.has_key('log'):
2484	rv['allocationLog'] = "".join(rv['log'])
2485	del rv['log']
2486	else:
2487	rv['allocationLog'] = ""
2488
2489	if rv['experimentStatus'] != 'active':
2490	if rv.has_key('federant'): del rv['federant']
2491	else:
2492	# remove the allocationID and uri info from each federant
2493	for f in rv.get('federant', []):
2494	if f.has_key('allocID'): del f['allocID']
2495	if f.has_key('uri'): del f['uri']
2496	return rv
2497
2498	def get_info(self, req, fid):
2499	"""
2500	Return all the stored info about this experiment
2501	"""
2502	rv = None
2503
2504	req = req.get('InfoRequestBody', None)
2505	if not req:
2506	raise service_error(service_error.req,
2507	"Bad request format (no InfoRequestBody)")
2508	exp = req.get('experiment', None)
2509	if exp:
2510	if exp.has_key('fedid'):
2511	key = exp['fedid']
2512	keytype = "fedid"
2513	elif exp.has_key('localname'):
2514	key = exp['localname']
2515	keytype = "localname"
2516	else:
2517	raise service_error(service_error.req, "Unknown lookup type")
2518	else:
2519	raise service_error(service_error.req, "No request?")
2520
2521	self.check_experiment_access(fid, key)
2522
2523	# The state may be massaged by the service function that called
2524	# get_info (e.g., encoded for XMLRPC transport) so send a copy of the
2525	# state.
2526	self.state_lock.acquire()
2527	if self.state.has_key(key):
2528	rv = copy.deepcopy(self.state[key])
2529	self.state_lock.release()
2530
2531	if rv:
2532	return self.clean_info_response(rv)
2533	else:
2534	raise service_error(service_error.req, "No such experiment")
2535
2536	def get_multi_info(self, req, fid):
2537	"""
2538	Return all the stored info that this fedid can access
2539	"""
2540	rv = { 'info': [ ] }
2541
2542	self.state_lock.acquire()
2543	for key in [ k for k in self.state.keys() if isinstance(k, fedid)]:
2544	try:
2545	self.check_experiment_access(fid, key)
2546	except service_error, e:
2547	if e.code == service_error.access:
2548	continue
2549	else:
2550	self.state_lock.release()
2551	raise e
2552
2553	if self.state.has_key(key):
2554	e = copy.deepcopy(self.state[key])
2555	e = self.clean_info_response(e)
2556	rv['info'].append(e)
2557	self.state_lock.release()
2558	return rv
2559
2560	def terminate_experiment(self, req, fid):
2561	"""
2562	Swap this experiment out on the federants and delete the shared
2563	information
2564	"""
2565	tbparams = { }
2566	req = req.get('TerminateRequestBody', None)
2567	if not req:
2568	raise service_error(service_error.req,
2569	"Bad request format (no TerminateRequestBody)")
2570	force = req.get('force', False)
2571	exp = req.get('experiment', None)
2572	if exp:
2573	if exp.has_key('fedid'):
2574	key = exp['fedid']
2575	keytype = "fedid"
2576	elif exp.has_key('localname'):
2577	key = exp['localname']
2578	keytype = "localname"
2579	else:
2580	raise service_error(service_error.req, "Unknown lookup type")
2581	else:
2582	raise service_error(service_error.req, "No request?")
2583
2584	self.check_experiment_access(fid, key)
2585
2586	dealloc_list = [ ]
2587
2588
2589	# Create a logger that logs to the dealloc_list as well as to the main
2590	# log file.
2591	dealloc_log = logging.getLogger('fedd.experiment_control.%s' % key)
2592	h = logging.StreamHandler(self.list_log(dealloc_list))
2593	# XXX: there should be a global one of these rather than repeating the
2594	# code.
2595	h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s",
2596	'%d %b %y %H:%M:%S'))
2597	dealloc_log.addHandler(h)
2598
2599	self.state_lock.acquire()
2600	fed_exp = self.state.get(key, None)
2601
2602	if fed_exp:
2603	# This branch of the conditional holds the lock to generate a
2604	# consistent temporary tbparams variable to deallocate experiments.
2605	# It releases the lock to do the deallocations and reacquires it to
2606	# remove the experiment state when the termination is complete.
2607
2608	# First make sure that the experiment creation is complete.
2609	status = fed_exp.get('experimentStatus', None)
2610
2611	if status:
2612	if status in ('starting', 'terminating'):
2613	if not force:
2614	self.state_lock.release()
2615	raise service_error(service_error.partial,
2616	'Experiment still being created or destroyed')
2617	else:
2618	self.log.warning('Experiment in %s state ' % status + \
2619	'being terminated by force.')
2620	else:
2621	# No status??? trouble
2622	self.state_lock.release()
2623	raise service_error(service_error.internal,
2624	"Experiment has no status!?")
2625
2626	ids = []
2627	# experimentID is a list of dicts that are self-describing
2628	# identifiers. This finds all the fedids and localnames - the
2629	# keys of self.state - and puts them into ids.
2630	for id in fed_exp.get('experimentID', []):
2631	if id.has_key('fedid'): ids.append(id['fedid'])
2632	if id.has_key('localname'): ids.append(id['localname'])
2633
2634	# Collect the allocation/segment ids into a dict keyed by the fedid
2635	# of the allocation (or a monotonically increasing integer) that
2636	# contains a tuple of uri, aid (which is a dict...)
2637	for i, fed in enumerate(fed_exp.get('federant', [])):
2638	try:
2639	uri = fed['uri']
2640	aid = fed['allocID']
2641	k = fed['allocID'].get('fedid', i)
2642	except KeyError, e:
2643	continue
2644	tbparams[k] = (uri, aid)
2645	fed_exp['experimentStatus'] = 'terminating'
2646	if self.state_filename: self.write_state()
2647	self.state_lock.release()
2648
2649	# Stop everyone. NB, wait_for_all waits until a thread starts and
2650	# then completes, so we can't wait if nothing starts. So, no
2651	# tbparams, no start.
2652	if len(tbparams) > 0:
2653	thread_pool = self.thread_pool(self.nthreads)
2654	for k in tbparams.keys():
2655	# Create and start a thread to stop the segment
2656	thread_pool.wait_for_slot()
2657	uri, aid = tbparams[k]
2658	t = self.pooled_thread(\
2659	target=self.terminate_segment(log=dealloc_log,
2660	testbed=uri,
2661	cert_file=self.cert_file,
2662	cert_pwd=self.cert_pwd,
2663	trusted_certs=self.trusted_certs,
2664	caller=self.call_TerminateSegment),
2665	args=(uri, aid), name=k,
2666	pdata=thread_pool, trace_file=self.trace_file)
2667	t.start()
2668	# Wait for completions
2669	thread_pool.wait_for_all_done()
2670
2671	# release the allocations (failed experiments have done this
2672	# already, and starting experiments may be in odd states, so we
2673	# ignore errors releasing those allocations
2674	try:
2675	for k in tbparams.keys():
2676	# This releases access by uri
2677	uri, aid = tbparams[k]
2678	self.release_access(None, aid, uri=uri)
2679	except service_error, e:
2680	if status != 'failed' and not force:
2681	raise e
2682
2683	# Remove the terminated experiment
2684	self.state_lock.acquire()
2685	for id in ids:
2686	if self.state.has_key(id): del self.state[id]
2687
2688	if self.state_filename: self.write_state()
2689	self.state_lock.release()
2690
2691	# Delete any synch points associated with this experiment. All
2692	# synch points begin with the fedid of the experiment.
2693	fedid_keys = set(["fedid:%s" % f for f in ids \
2694	if isinstance(f, fedid)])
2695	for k in self.synch_store.all_keys():
2696	try:
2697	if len(k) > 45 and k[0:46] in fedid_keys:
2698	self.synch_store.del_value(k)
2699	except synch_store.BadDeletionError:
2700	pass
2701	self.write_store()
2702
2703	return {
2704	'experiment': exp ,
2705	'deallocationLog': "".join(dealloc_list),
2706	}
2707	else:
2708	# Don't forget to release the lock
2709	self.state_lock.release()
2710	raise service_error(service_error.req, "No saved state")
2711
2712
2713	def GetValue(self, req, fid):
2714	"""
2715	Get a value from the synchronized store
2716	"""
2717	req = req.get('GetValueRequestBody', None)
2718	if not req:
2719	raise service_error(service_error.req,
2720	"Bad request format (no GetValueRequestBody)")
2721
2722	name = req['name']
2723	wait = req['wait']
2724	rv = { 'name': name }
2725
2726	if self.auth.check_attribute(fid, name):
2727	try:
2728	v = self.synch_store.get_value(name, wait)
2729	except synch_store.RevokedKeyError:
2730	# No more synch on this key
2731	raise service_error(service_error.federant,
2732	"Synch key %s revoked" % name)
2733	if v is not None:
2734	rv['value'] = v
2735	self.log.debug("[GetValue] got %s from %s" % (v, name))
2736	return rv
2737	else:
2738	raise service_error(service_error.access, "Access Denied")
2739
2740
2741	def SetValue(self, req, fid):
2742	"""
2743	Set a value in the synchronized store
2744	"""
2745	req = req.get('SetValueRequestBody', None)
2746	if not req:
2747	raise service_error(service_error.req,
2748	"Bad request format (no SetValueRequestBody)")
2749
2750	name = req['name']
2751	v = req['value']
2752
2753	if self.auth.check_attribute(fid, name):
2754	try:
2755	self.synch_store.set_value(name, v)
2756	self.write_store()
2757	self.log.debug("[SetValue] set %s to %s" % (name, v))
2758	except synch_store.CollisionError:
2759	# Translate into a service_error
2760	raise service_error(service_error.req,
2761	"Value already set: %s" %name)
2762	except synch_store.RevokedKeyError:
2763	# No more synch on this key
2764	raise service_error(service_error.federant,
2765	"Synch key %s revoked" % name)
2766	return { 'name': name, 'value': v }
2767	else:
2768	raise service_error(service_error.access, "Access Denied")

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