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source: fedd/federation/experiment_control.py @ 4f2f41f

axis_examplecompt_changesinfo-opsversion-3.01version-3.02

Last change on this file since 4f2f41f was 4f2f41f, checked in by Ted Faber <faber@…>, 14 years ago
needs to go, but not yet
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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	from experiment_partition import experiment_partition
32
33	import topdl
34	import list_log
35	from ip_allocator import ip_allocator
36	from ip_addr import ip_addr
37
38
39	class nullHandler(logging.Handler):
40	def emit(self, record): pass
41
42	fl = logging.getLogger("fedd.experiment_control")
43	fl.addHandler(nullHandler())
44
45
46	# Right now, no support for composition.
47	class federated_service:
48	def __init__(self, name, exporter=None, importers=[], params={ }, reqs=[]):
49	self.name=name
50	self.exporter=exporter
51	self.importers=importers
52	self.params = params
53	self.reqs = reqs
54
55	class experiment_control_local:
56	"""
57	Control of experiments that this system can directly access.
58
59	Includes experiment creation, termination and information dissemination.
60	Thred safe.
61	"""
62
63	class ssh_cmd_timeout(RuntimeError): pass
64
65	class thread_pool:
66	"""
67	A class to keep track of a set of threads all invoked for the same
68	task. Manages the mutual exclusion of the states.
69	"""
70	def __init__(self, nthreads):
71	"""
72	Start a pool.
73	"""
74	self.changed = Condition()
75	self.started = 0
76	self.terminated = 0
77	self.nthreads = nthreads
78
79	def acquire(self):
80	"""
81	Get the pool's lock.
82	"""
83	self.changed.acquire()
84
85	def release(self):
86	"""
87	Release the pool's lock.
88	"""
89	self.changed.release()
90
91	def wait(self, timeout = None):
92	"""
93	Wait for a pool thread to start or stop.
94	"""
95	self.changed.wait(timeout)
96
97	def start(self):
98	"""
99	Called by a pool thread to report starting.
100	"""
101	self.changed.acquire()
102	self.started += 1
103	self.changed.notifyAll()
104	self.changed.release()
105
106	def terminate(self):
107	"""
108	Called by a pool thread to report finishing.
109	"""
110	self.changed.acquire()
111	self.terminated += 1
112	self.changed.notifyAll()
113	self.changed.release()
114
115	def clear(self):
116	"""
117	Clear all pool data.
118	"""
119	self.changed.acquire()
120	self.started = 0
121	self.terminated =0
122	self.changed.notifyAll()
123	self.changed.release()
124
125	def wait_for_slot(self):
126	"""
127	Wait until we have a free slot to start another pooled thread
128	"""
129	self.acquire()
130	while self.started - self.terminated >= self.nthreads:
131	self.wait()
132	self.release()
133
134	def wait_for_all_done(self, timeout=None):
135	"""
136	Wait until all active threads finish (and at least one has
137	started). If a timeout is given, return after waiting that long
138	for termination. If all threads are done (and one has started in
139	the since the last clear()) return True, otherwise False.
140	"""
141	if timeout:
142	deadline = time.time() + timeout
143	self.acquire()
144	while self.started == 0 or self.started > self.terminated:
145	self.wait(timeout)
146	if timeout:
147	if time.time() > deadline:
148	break
149	timeout = deadline - time.time()
150	self.release()
151	return not (self.started == 0 or self.started > self.terminated)
152
153	class pooled_thread(Thread):
154	"""
155	One of a set of threads dedicated to a specific task. Uses the
156	thread_pool class above for coordination.
157	"""
158	def __init__(self, group=None, target=None, name=None, args=(),
159	kwargs={}, pdata=None, trace_file=None):
160	Thread.__init__(self, group, target, name, args, kwargs)
161	self.rv = None # Return value of the ops in this thread
162	self.exception = None # Exception that terminated this thread
163	self.target=target # Target function to run on start()
164	self.args = args # Args to pass to target
165	self.kwargs = kwargs # Additional kw args
166	self.pdata = pdata # thread_pool for this class
167	# Logger for this thread
168	self.log = logging.getLogger("fedd.experiment_control")
169
170	def run(self):
171	"""
172	Emulate Thread.run, except add pool data manipulation and error
173	logging.
174	"""
175	if self.pdata:
176	self.pdata.start()
177
178	if self.target:
179	try:
180	self.rv = self.target(self.args, *self.kwargs)
181	except service_error, s:
182	self.exception = s
183	self.log.error("Thread exception: %s %s" % \
184	(s.code_string(), s.desc))
185	except:
186	self.exception = sys.exc_info()[1]
187	self.log.error(("Unexpected thread exception: %s" +\
188	"Trace %s") % (self.exception,\
189	traceback.format_exc()))
190	if self.pdata:
191	self.pdata.terminate()
192
193	call_RequestAccess = service_caller('RequestAccess')
194	call_ReleaseAccess = service_caller('ReleaseAccess')
195	call_StartSegment = service_caller('StartSegment')
196	call_TerminateSegment = service_caller('TerminateSegment')
197	call_Ns2Topdl = service_caller('Ns2Topdl')
198
199	def __init__(self, config=None, auth=None):
200	"""
201	Intialize the various attributes, most from the config object
202	"""
203
204	def parse_tarfile_list(tf):
205	"""
206	Parse a tarfile list from the configuration. This is a set of
207	paths and tarfiles separated by spaces.
208	"""
209	rv = [ ]
210	if tf is not None:
211	tl = tf.split()
212	while len(tl) > 1:
213	p, t = tl[0:2]
214	del tl[0:2]
215	rv.append((p, t))
216	return rv
217
218	self.thread_with_rv = experiment_control_local.pooled_thread
219	self.thread_pool = experiment_control_local.thread_pool
220	self.list_log = list_log.list_log
221
222	self.cert_file = config.get("experiment_control", "cert_file")
223	if self.cert_file:
224	self.cert_pwd = config.get("experiment_control", "cert_pwd")
225	else:
226	self.cert_file = config.get("globals", "cert_file")
227	self.cert_pwd = config.get("globals", "cert_pwd")
228
229	self.trusted_certs = config.get("experiment_control", "trusted_certs") \
230	or config.get("globals", "trusted_certs")
231
232	self.repodir = config.get("experiment_control", "repodir")
233	self.repo_url = config.get("experiment_control", "repo_url",
234	"https://users.isi.deterlab.net:23235");
235
236	self.exp_stem = "fed-stem"
237	self.log = logging.getLogger("fedd.experiment_control")
238	set_log_level(config, "experiment_control", self.log)
239	self.muxmax = 2
240	self.nthreads = 10
241	self.randomize_experiments = False
242
243	self.splitter = None
244	self.ssh_keygen = "/usr/bin/ssh-keygen"
245	self.ssh_identity_file = None
246
247
248	self.debug = config.getboolean("experiment_control", "create_debug")
249	self.cleanup = not config.getboolean("experiment_control",
250	"leave_tmpfiles")
251	self.state_filename = config.get("experiment_control",
252	"experiment_state")
253	self.store_filename = config.get("experiment_control",
254	"synch_store")
255	self.store_url = config.get("experiment_control", "store_url")
256	self.splitter_url = config.get("experiment_control", "ns2topdl_uri")
257	self.fedkit = parse_tarfile_list(\
258	config.get("experiment_control", "fedkit"))
259	self.gatewaykit = parse_tarfile_list(\
260	config.get("experiment_control", "gatewaykit"))
261	accessdb_file = config.get("experiment_control", "accessdb")
262
263	self.ssh_pubkey_file = config.get("experiment_control",
264	"ssh_pubkey_file")
265	self.ssh_privkey_file = config.get("experiment_control",
266	"ssh_privkey_file")
267	# NB for internal master/slave ops, not experiment setup
268	self.ssh_type = config.get("experiment_control", "sshkeytype", "rsa")
269
270	self.overrides = set([])
271	ovr = config.get('experiment_control', 'overrides')
272	if ovr:
273	for o in ovr.split(","):
274	o = o.strip()
275	if o.startswith('fedid:'): o = o[len('fedid:'):]
276	self.overrides.add(fedid(hexstr=o))
277
278	self.state = { }
279	self.state_lock = Lock()
280	self.tclsh = "/usr/local/bin/otclsh"
281	self.tcl_splitter = config.get("ns2topdl", "tcl_splitter") or \
282	config.get("experiment_control", "tcl_splitter",
283	"/usr/testbed/lib/ns2ir/parse.tcl")
284	mapdb_file = config.get("experiment_control", "mapdb")
285	self.trace_file = sys.stderr
286
287	self.def_expstart = \
288	"sudo -H /bin/sh /usr/local/federation/bin/federate.sh >& " +\
289	"/tmp/federate";
290	self.def_mexpstart = "sudo -H /usr/local/federation/bin/make_hosts " +\
291	"FEDDIR/hosts";
292	self.def_gwstart = \
293	"sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF>& " +\
294	"/tmp/bridge.log";
295	self.def_mgwstart = \
296	"sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF >& " +\
297	"/tmp/bridge.log";
298	self.def_gwimage = "FBSD61-TUNNEL2";
299	self.def_gwtype = "pc";
300	self.local_access = { }
301
302	if auth:
303	self.auth = auth
304	else:
305	self.log.error(\
306	"[access]: No authorizer initialized, creating local one.")
307	auth = authorizer()
308
309
310	if self.ssh_pubkey_file:
311	try:
312	f = open(self.ssh_pubkey_file, 'r')
313	self.ssh_pubkey = f.read()
314	f.close()
315	except IOError:
316	raise service_error(service_error.internal,
317	"Cannot read sshpubkey")
318	else:
319	raise service_error(service_error.internal,
320	"No SSH public key file?")
321
322	if not self.ssh_privkey_file:
323	raise service_error(service_error.internal,
324	"No SSH public key file?")
325
326
327	if mapdb_file:
328	self.read_mapdb(mapdb_file)
329	else:
330	self.log.warn("[experiment_control] No testbed map, using defaults")
331	self.tbmap = {
332	'deter':'https://users.isi.deterlab.net:23235',
333	'emulab':'https://users.isi.deterlab.net:23236',
334	'ucb':'https://users.isi.deterlab.net:23237',
335	}
336
337	if accessdb_file:
338	self.read_accessdb(accessdb_file)
339	else:
340	raise service_error(service_error.internal,
341	"No accessdb specified in config")
342
343	# Grab saved state. OK to do this w/o locking because it's read only
344	# and only one thread should be in existence that can see self.state at
345	# this point.
346	if self.state_filename:
347	self.read_state()
348
349	if self.store_filename:
350	self.read_store()
351	else:
352	self.log.warning("No saved synch store")
353	self.synch_store = synch_store
354
355	# Dispatch tables
356	self.soap_services = {\
357	'New': soap_handler('New', self.new_experiment),
358	'Create': soap_handler('Create', self.create_experiment),
359	'Vtopo': soap_handler('Vtopo', self.get_vtopo),
360	'Vis': soap_handler('Vis', self.get_vis),
361	'Info': soap_handler('Info', self.get_info),
362	'MultiInfo': soap_handler('MultiInfo', self.get_multi_info),
363	'Terminate': soap_handler('Terminate',
364	self.terminate_experiment),
365	'GetValue': soap_handler('GetValue', self.GetValue),
366	'SetValue': soap_handler('SetValue', self.SetValue),
367	}
368
369	self.xmlrpc_services = {\
370	'New': xmlrpc_handler('New', self.new_experiment),
371	'Create': xmlrpc_handler('Create', self.create_experiment),
372	'Vtopo': xmlrpc_handler('Vtopo', self.get_vtopo),
373	'Vis': xmlrpc_handler('Vis', self.get_vis),
374	'Info': xmlrpc_handler('Info', self.get_info),
375	'MultiInfo': xmlrpc_handler('MultiInfo', self.get_multi_info),
376	'Terminate': xmlrpc_handler('Terminate',
377	self.terminate_experiment),
378	'GetValue': xmlrpc_handler('GetValue', self.GetValue),
379	'SetValue': xmlrpc_handler('SetValue', self.SetValue),
380	}
381
382	# Call while holding self.state_lock
383	def write_state(self):
384	"""
385	Write a new copy of experiment state after copying the existing state
386	to a backup.
387
388	State format is a simple pickling of the state dictionary.
389	"""
390	if os.access(self.state_filename, os.W_OK):
391	copy_file(self.state_filename, \
392	"%s.bak" % self.state_filename)
393	try:
394	f = open(self.state_filename, 'w')
395	pickle.dump(self.state, f)
396	except IOError, e:
397	self.log.error("Can't write file %s: %s" % \
398	(self.state_filename, e))
399	except pickle.PicklingError, e:
400	self.log.error("Pickling problem: %s" % e)
401	except TypeError, e:
402	self.log.error("Pickling problem (TypeError): %s" % e)
403
404	@staticmethod
405	def get_alloc_ids(state):
406	"""
407	Pull the fedids of the identifiers of each allocation from the
408	state. Again, a dict dive that's best isolated.
409
410	Used by read_store and read state
411	"""
412
413	return [ f['allocID']['fedid']
414	for f in state.get('federant',[]) \
415	if f.has_key('allocID') and \
416	f['allocID'].has_key('fedid')]
417
418	# Call while holding self.state_lock
419	def read_state(self):
420	"""
421	Read a new copy of experiment state. Old state is overwritten.
422
423	State format is a simple pickling of the state dictionary.
424	"""
425
426	def get_experiment_id(state):
427	"""
428	Pull the fedid experimentID out of the saved state. This is kind
429	of a gross walk through the dict.
430	"""
431
432	if state.has_key('experimentID'):
433	for e in state['experimentID']:
434	if e.has_key('fedid'):
435	return e['fedid']
436	else:
437	return None
438	else:
439	return None
440
441	try:
442	f = open(self.state_filename, "r")
443	self.state = pickle.load(f)
444	self.log.debug("[read_state]: Read state from %s" % \
445	self.state_filename)
446	except IOError, e:
447	self.log.warning("[read_state]: No saved state: Can't open %s: %s"\
448	% (self.state_filename, e))
449	except pickle.UnpicklingError, e:
450	self.log.warning(("[read_state]: No saved state: " + \
451	"Unpickling failed: %s") % e)
452
453	for s in self.state.values():
454	try:
455
456	eid = get_experiment_id(s)
457	if eid :
458	# Give the owner rights to the experiment
459	self.auth.set_attribute(s['owner'], eid)
460	# And holders of the eid as well
461	self.auth.set_attribute(eid, eid)
462	# allow overrides to control experiments as well
463	for o in self.overrides:
464	self.auth.set_attribute(o, eid)
465	# Set permissions to allow reading of the software repo, if
466	# any, as well.
467	for a in self.get_alloc_ids(s):
468	self.auth.set_attribute(a, 'repo/%s' % eid)
469	else:
470	raise KeyError("No experiment id")
471	except KeyError, e:
472	self.log.warning("[read_state]: State ownership or identity " +\
473	"misformatted in %s: %s" % (self.state_filename, e))
474
475
476	def read_accessdb(self, accessdb_file):
477	"""
478	Read the mapping from fedids that can create experiments to their name
479	in the 3-level access namespace. All will be asserted from this
480	testbed and can include the local username and porject that will be
481	asserted on their behalf by this fedd. Each fedid is also added to the
482	authorization system with the "create" attribute.
483	"""
484	self.accessdb = {}
485	# These are the regexps for parsing the db
486	name_expr = "[" + string.ascii_letters + string.digits + "\.\-]+"
487	project_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \
488	"\s->\(\s("+name_expr+")\s,\s("+name_expr+")\s\)\s$")
489	user_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \
490	"\s->\s(" + name_expr + ")\s*$")
491	lineno = 0
492
493	# Parse the mappings and store in self.authdb, a dict of
494	# fedid -> (proj, user)
495	try:
496	f = open(accessdb_file, "r")
497	for line in f:
498	lineno += 1
499	line = line.strip()
500	if len(line) == 0 or line.startswith('#'):
501	continue
502	m = project_line.match(line)
503	if m:
504	fid = fedid(hexstr=m.group(1))
505	project, user = m.group(2,3)
506	if not self.accessdb.has_key(fid):
507	self.accessdb[fid] = []
508	self.accessdb[fid].append((project, user))
509	continue
510
511	m = user_line.match(line)
512	if m:
513	fid = fedid(hexstr=m.group(1))
514	project = None
515	user = m.group(2)
516	if not self.accessdb.has_key(fid):
517	self.accessdb[fid] = []
518	self.accessdb[fid].append((project, user))
519	continue
520	self.log.warn("[experiment_control] Error parsing access " +\
521	"db %s at line %d" % (accessdb_file, lineno))
522	except IOError:
523	raise service_error(service_error.internal,
524	"Error opening/reading %s as experiment " +\
525	"control accessdb" % accessdb_file)
526	f.close()
527
528	# Initialize the authorization attributes
529	for fid in self.accessdb.keys():
530	self.auth.set_attribute(fid, 'create')
531	self.auth.set_attribute(fid, 'new')
532
533	def read_mapdb(self, file):
534	"""
535	Read a simple colon separated list of mappings for the
536	label-to-testbed-URL mappings. Clears or creates self.tbmap.
537	"""
538
539	self.tbmap = { }
540	lineno =0
541	try:
542	f = open(file, "r")
543	for line in f:
544	lineno += 1
545	line = line.strip()
546	if line.startswith('#') or len(line) == 0:
547	continue
548	try:
549	label, url = line.split(':', 1)
550	self.tbmap[label] = url
551	except ValueError, e:
552	self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\
553	"map db: %s %s" % (lineno, line, e))
554	except IOError, e:
555	self.log.warning("[read_mapdb]: No saved map database: Can't " +\
556	"open %s: %s" % (file, e))
557	f.close()
558
559	def read_store(self):
560	try:
561	self.synch_store = synch_store()
562	self.synch_store.load(self.store_filename)
563	self.log.debug("[read_store]: Read store from %s" % \
564	self.store_filename)
565	except IOError, e:
566	self.log.warning("[read_store]: No saved store: Can't open %s: %s"\
567	% (self.state_filename, e))
568	self.synch_store = synch_store()
569
570	# Set the initial permissions on data in the store. XXX: This ad hoc
571	# authorization attribute initialization is getting out of hand.
572	for k in self.synch_store.all_keys():
573	try:
574	if k.startswith('fedid:'):
575	fid = fedid(hexstr=k[6:46])
576	if self.state.has_key(fid):
577	for a in self.get_alloc_ids(self.state[fid]):
578	self.auth.set_attribute(a, k)
579	except ValueError, e:
580	self.log.warn("Cannot deduce permissions for %s" % k)
581
582
583	def write_store(self):
584	"""
585	Write a new copy of synch_store after writing current state
586	to a backup. We use the internal synch_store pickle method to avoid
587	incinsistent data.
588
589	State format is a simple pickling of the store.
590	"""
591	if os.access(self.store_filename, os.W_OK):
592	copy_file(self.store_filename, \
593	"%s.bak" % self.store_filename)
594	try:
595	self.synch_store.save(self.store_filename)
596	except IOError, e:
597	self.log.error("Can't write file %s: %s" % \
598	(self.store_filename, e))
599	except TypeError, e:
600	self.log.error("Pickling problem (TypeError): %s" % e)
601
602
603	def generate_ssh_keys(self, dest, type="rsa" ):
604	"""
605	Generate a set of keys for the gateways to use to talk.
606
607	Keys are of type type and are stored in the required dest file.
608	"""
609	valid_types = ("rsa", "dsa")
610	t = type.lower();
611	if t not in valid_types: raise ValueError
612	cmd = [self.ssh_keygen, '-t', t, '-N', '', '-f', dest]
613
614	try:
615	trace = open("/dev/null", "w")
616	except IOError:
617	raise service_error(service_error.internal,
618	"Cannot open /dev/null??");
619
620	# May raise CalledProcessError
621	self.log.debug("[generate_ssh_keys]: %s" % " ".join(cmd))
622	rv = call(cmd, stdout=trace, stderr=trace, close_fds=True)
623	if rv != 0:
624	raise service_error(service_error.internal,
625	"Cannot generate nonce ssh keys. %s return code %d" \
626	% (self.ssh_keygen, rv))
627
628	def gentopo(self, str):
629	"""
630	Generate the topology dtat structure from the splitter's XML
631	representation of it.
632
633	The topology XML looks like:
634	<experiment>
635	<nodes>
636	<node><vname></vname><ips>ip1:ip2</ips></node>
637	</nodes>
638	<lans>
639	<lan>
640	<vname></vname><vnode></vnode><ip></ip>
641	<bandwidth></bandwidth><member>node:port</member>
642	</lan>
643	</lans>
644	"""
645	class topo_parse:
646	"""
647	Parse the topology XML and create the dats structure.
648	"""
649	def __init__(self):
650	# Typing of the subelements for data conversion
651	self.str_subelements = ('vname', 'vnode', 'ips', 'ip', 'member')
652	self.int_subelements = ( 'bandwidth',)
653	self.float_subelements = ( 'delay',)
654	# The final data structure
655	self.nodes = [ ]
656	self.lans = [ ]
657	self.topo = { \
658	'node': self.nodes,\
659	'lan' : self.lans,\
660	}
661	self.element = { } # Current element being created
662	self.chars = "" # Last text seen
663
664	def end_element(self, name):
665	# After each sub element the contents is added to the current
666	# element or to the appropriate list.
667	if name == 'node':
668	self.nodes.append(self.element)
669	self.element = { }
670	elif name == 'lan':
671	self.lans.append(self.element)
672	self.element = { }
673	elif name in self.str_subelements:
674	self.element[name] = self.chars
675	self.chars = ""
676	elif name in self.int_subelements:
677	self.element[name] = int(self.chars)
678	self.chars = ""
679	elif name in self.float_subelements:
680	self.element[name] = float(self.chars)
681	self.chars = ""
682
683	def found_chars(self, data):
684	self.chars += data.rstrip()
685
686
687	tp = topo_parse();
688	parser = xml.parsers.expat.ParserCreate()
689	parser.EndElementHandler = tp.end_element
690	parser.CharacterDataHandler = tp.found_chars
691
692	parser.Parse(str)
693
694	return tp.topo
695
696
697	def genviz(self, topo):
698	"""
699	Generate the visualization the virtual topology
700	"""
701
702	neato = "/usr/local/bin/neato"
703	# These are used to parse neato output and to create the visualization
704	# file.
705	vis_re = re.compile('^\s"?([\w\-]+)"?\s+\[.pos="([\d\.]+),([\d\.]+)"')
706	vis_fmt = "<node><name>%s</name><x>%s</x><y>%s</y><type>" + \
707	"%s</type></node>"
708
709	try:
710	# Node names
711	nodes = [ n['vname'] for n in topo['node'] ]
712	topo_lans = topo['lan']
713	except KeyError, e:
714	raise service_error(service_error.internal, "Bad topology: %s" %e)
715
716	lans = { }
717	links = { }
718
719	# Walk through the virtual topology, organizing the connections into
720	# 2-node connections (links) and more-than-2-node connections (lans).
721	# When a lan is created, it's added to the list of nodes (there's a
722	# node in the visualization for the lan).
723	for l in topo_lans:
724	if links.has_key(l['vname']):
725	if len(links[l['vname']]) < 2:
726	links[l['vname']].append(l['vnode'])
727	else:
728	nodes.append(l['vname'])
729	lans[l['vname']] = links[l['vname']]
730	del links[l['vname']]
731	lans[l['vname']].append(l['vnode'])
732	elif lans.has_key(l['vname']):
733	lans[l['vname']].append(l['vnode'])
734	else:
735	links[l['vname']] = [ l['vnode'] ]
736
737
738	# Open up a temporary file for dot to turn into a visualization
739	try:
740	df, dotname = tempfile.mkstemp()
741	dotfile = os.fdopen(df, 'w')
742	except IOError:
743	raise service_error(service_error.internal,
744	"Failed to open file in genviz")
745
746	try:
747	dnull = open('/dev/null', 'w')
748	except IOError:
749	service_error(service_error.internal,
750	"Failed to open /dev/null in genviz")
751
752	# Generate a dot/neato input file from the links, nodes and lans
753	try:
754	print >>dotfile, "graph G {"
755	for n in nodes:
756	print >>dotfile, '\t"%s"' % n
757	for l in links.keys():
758	print >>dotfile, '\t"%s" -- "%s"' % tuple(links[l])
759	for l in lans.keys():
760	for n in lans[l]:
761	print >>dotfile, '\t "%s" -- "%s"' % (n,l)
762	print >>dotfile, "}"
763	dotfile.close()
764	except TypeError:
765	raise service_error(service_error.internal,
766	"Single endpoint link in vtopo")
767	except IOError:
768	raise service_error(service_error.internal, "Cannot write dot file")
769
770	# Use dot to create a visualization
771	dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005', '-Gmaxiter=2000',
772	'-Gpack=true', dotname], stdout=PIPE, stderr=dnull,
773	close_fds=True)
774	dnull.close()
775
776	# Translate dot to vis format
777	vis_nodes = [ ]
778	vis = { 'node': vis_nodes }
779	for line in dot.stdout:
780	m = vis_re.match(line)
781	if m:
782	vn = m.group(1)
783	vis_node = {'name': vn, \
784	'x': float(m.group(2)),\
785	'y' : float(m.group(3)),\
786	}
787	if vn in links.keys() or vn in lans.keys():
788	vis_node['type'] = 'lan'
789	else:
790	vis_node['type'] = 'node'
791	vis_nodes.append(vis_node)
792	rv = dot.wait()
793
794	os.remove(dotname)
795	if rv == 0 : return vis
796	else: return None
797
798	def get_access(self, tb, nodes, tbparam, access_user, masters):
799	"""
800	Get access to testbed through fedd and set the parameters for that tb
801	"""
802	def get_export_project(svcs):
803	"""
804	Look through for the list of federated_service for this testbed
805	objects for a project_export service, and extract the project
806	parameter.
807	"""
808
809	pe = [s for s in svcs if s.name=='project_export']
810	if len(pe) == 1:
811	return pe[0].params.get('project', None)
812	elif len(pe) == 0:
813	return None
814	else:
815	raise service_error(service_error.req,
816	"More than one project export is not supported")
817
818	uri = self.tbmap.get(tb, None)
819	if not uri:
820	raise service_error(service_error.server_config,
821	"Unknown testbed: %s" % tb)
822
823	export_svcs = masters.get(tb,[])
824	import_svcs = [ s for m in masters.values() \
825	for s in m \
826	if tb in s.importers ]
827
828	export_project = get_export_project(export_svcs)
829
830	# Tweak search order so that if there are entries in access_user that
831	# have a project matching the export project, we try them first
832	if export_project:
833	access_sequence = [ (p, u) for p, u in access_user \
834	if p == export_project]
835	access_sequence.extend([(p, u) for p, u in access_user \
836	if p != export_project])
837	else:
838	access_sequence = access_user
839
840	for p, u in access_sequence:
841	self.log.debug(("[get_access] Attempting access from (%s, %s) " + \
842	"to %s") % ((p or "None"), u, uri))
843
844	if p:
845	# Request with user and project specified
846	req = {\
847	'destinationTestbed' : { 'uri' : uri },
848	'credential': [ "project: %s" % p, "user: %s" % u],
849	'allocID' : { 'localname': 'test' },
850	}
851	else:
852	# Request with only user specified
853	req = {\
854	'destinationTestbed' : { 'uri' : uri },
855	'credential': [ 'user: %s' % u ],
856	'allocID' : { 'localname': 'test' },
857	}
858
859	# Make the service request from the services we're importing and
860	# exporting. Keep track of the export request ids so we can
861	# collect the resulting info from the access response.
862	e_keys = { }
863	if import_svcs or export_svcs:
864	req['service'] = [ ]
865
866	for i, s in enumerate(import_svcs):
867	idx = 'import%d' % i
868	sr = {'id': idx, 'name': s.name, 'visibility': 'import' }
869	if s.params:
870	sr['fedAttr'] = [ { 'attribute': k, 'value': v } \
871	for k, v in s.params.items()]
872	req['service'].append(sr)
873
874	for i, s in enumerate(export_svcs):
875	idx = 'export%d' % i
876	e_keys[idx] = s
877	sr = {'id': idx, 'name': s.name, 'visibility': 'export' }
878	if s.params:
879	sr['fedAttr'] = [ { 'attribute': k, 'value': v }
880	for k, v in s.params.items()]
881	req['service'].append(sr)
882
883	# node resources if any
884	if nodes != None and len(nodes) > 0:
885	rnodes = [ ]
886	for n in nodes:
887	rn = { }
888	image, hw, count = n.split(":")
889	if image: rn['image'] = [ image ]
890	if hw: rn['hardware'] = [ hw ]
891	if count and int(count) >0 : rn['count'] = int(count)
892	rnodes.append(rn)
893	req['resources']= { }
894	req['resources']['node'] = rnodes
895
896	try:
897	if self.local_access.has_key(uri):
898	# Local access call
899	req = { 'RequestAccessRequestBody' : req }
900	r = self.local_access[uri].RequestAccess(req,
901	fedid(file=self.cert_file))
902	r = { 'RequestAccessResponseBody' : r }
903	else:
904	r = self.call_RequestAccess(uri, req,
905	self.cert_file, self.cert_pwd, self.trusted_certs)
906	except service_error, e:
907	if e.code == service_error.access:
908	self.log.debug("[get_access] Access denied")
909	r = None
910	continue
911	else:
912	raise e
913
914	if r.has_key('RequestAccessResponseBody'):
915	# Through to here we have a valid response, not a fault.
916	# Access denied is a fault, so something better or worse than
917	# access denied has happened.
918	r = r['RequestAccessResponseBody']
919	self.log.debug("[get_access] Access granted")
920	break
921	else:
922	raise service_error(service_error.protocol,
923	"Bad proxy response")
924
925	if not r:
926	raise service_error(service_error.access,
927	"Access denied by %s (%s)" % (tb, uri))
928
929	tbparam[tb] = {
930	"allocID" : r['allocID'],
931	"uri": uri,
932	}
933
934	# Collect the responses corresponding to the services this testbed
935	# exports. These will be the service requests that we will include in
936	# the start segment requests (with appropriate visibility values) to
937	# import and export the segments.
938	for s in r.get('service', []):
939	id = s.get('id', None)
940	if id and id in e_keys:
941	e_keys[id].reqs.append(s)
942
943	# Add attributes to parameter space. We don't allow attributes to
944	# overlay any parameters already installed.
945	for a in r.get('fedAttr', []):
946	try:
947	if a['attribute'] and \
948	isinstance(a['attribute'], basestring)\
949	and not tbparam[tb].has_key(a['attribute'].lower()):
950	tbparam[tb][a['attribute'].lower()] = a['value']
951	except KeyError:
952	self.log.error("Bad attribute in response: %s" % a)
953
954	def release_access(self, tb, aid, uri=None):
955	"""
956	Release access to testbed through fedd
957	"""
958
959	if not uri:
960	uri = self.tbmap.get(tb, None)
961	if not uri:
962	raise service_error(service_error.server_config,
963	"Unknown testbed: %s" % tb)
964
965	if self.local_access.has_key(uri):
966	resp = self.local_access[uri].ReleaseAccess(\
967	{ 'ReleaseAccessRequestBody' : {'allocID': aid},},
968	fedid(file=self.cert_file))
969	resp = { 'ReleaseAccessResponseBody': resp }
970	else:
971	resp = self.call_ReleaseAccess(uri, {'allocID': aid},
972	self.cert_file, self.cert_pwd, self.trusted_certs)
973
974	# better error coding
975
976	def remote_ns2topdl(self, uri, desc):
977
978	req = {
979	'description' : { 'ns2description': desc },
980	}
981
982	r = self.call_Ns2Topdl(uri, req, self.cert_file, self.cert_pwd,
983	self.trusted_certs)
984
985	if r.has_key('Ns2TopdlResponseBody'):
986	r = r['Ns2TopdlResponseBody']
987	ed = r.get('experimentdescription', None)
988	if ed.has_key('topdldescription'):
989	return topdl.Topology(**ed['topdldescription'])
990	else:
991	raise service_error(service_error.protocol,
992	"Bad splitter response (no output)")
993	else:
994	raise service_error(service_error.protocol, "Bad splitter response")
995
996	class start_segment:
997	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
998	cert_pwd=None, trusted_certs=None, caller=None,
999	log_collector=None):
1000	self.log = log
1001	self.debug = debug
1002	self.cert_file = cert_file
1003	self.cert_pwd = cert_pwd
1004	self.trusted_certs = None
1005	self.caller = caller
1006	self.testbed = testbed
1007	self.log_collector = log_collector
1008	self.response = None
1009
1010	def __call__(self, uri, aid, topo, masters, attrs=None, connInfo=None):
1011	req = {
1012	'allocID': { 'fedid' : aid },
1013	'segmentdescription': {
1014	'topdldescription': topo.to_dict(),
1015	},
1016	# XXX: deprecated
1017	'master': False,
1018	}
1019
1020	if connInfo:
1021	req['connection'] = connInfo
1022
1023	import_svcs = [ s for m in masters.values() \
1024	for s in m if self.testbed in s.importers]
1025
1026	if import_svcs or self.testbed in masters:
1027	req['service'] = []
1028
1029	for s in import_svcs:
1030	for r in s.reqs:
1031	sr = copy.deepcopy(r)
1032	sr['visibility'] = 'import';
1033	req['service'].append(sr)
1034
1035	for s in masters.get(self.testbed, []):
1036	for r in s.reqs:
1037	sr = copy.deepcopy(r)
1038	sr['visibility'] = 'export';
1039	req['service'].append(sr)
1040
1041	if attrs:
1042	req['fedAttr'] = attrs
1043
1044	try:
1045	self.log.debug("Calling StartSegment at %s " % uri)
1046	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
1047	self.trusted_certs)
1048	if r.has_key('StartSegmentResponseBody'):
1049	lval = r['StartSegmentResponseBody'].get('allocationLog',
1050	None)
1051	if lval and self.log_collector:
1052	for line in lval.splitlines(True):
1053	self.log_collector.write(line)
1054	self.response = r
1055	else:
1056	raise service_error(service_error.internal,
1057	"Bad response!?: %s" %r)
1058	return True
1059	except service_error, e:
1060	self.log.error("Start segment failed on %s: %s" % \
1061	(self.testbed, e))
1062	return False
1063
1064
1065
1066	class terminate_segment:
1067	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
1068	cert_pwd=None, trusted_certs=None, caller=None):
1069	self.log = log
1070	self.debug = debug
1071	self.cert_file = cert_file
1072	self.cert_pwd = cert_pwd
1073	self.trusted_certs = None
1074	self.caller = caller
1075	self.testbed = testbed
1076
1077	def __call__(self, uri, aid ):
1078	req = {
1079	'allocID': aid ,
1080	}
1081	try:
1082	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
1083	self.trusted_certs)
1084	return True
1085	except service_error, e:
1086	self.log.error("Terminate segment failed on %s: %s" % \
1087	(self.testbed, e))
1088	return False
1089
1090
1091	def allocate_resources(self, allocated, masters, eid, expid,
1092	tbparams, topo, tmpdir, alloc_log=None, log_collector=None,
1093	attrs=None, connInfo={}):
1094
1095	started = { } # Testbeds where a sub-experiment started
1096	# successfully
1097
1098	# XXX
1099	fail_soft = False
1100
1101	log = alloc_log or self.log
1102
1103	thread_pool = self.thread_pool(self.nthreads)
1104	threads = [ ]
1105
1106	for tb in allocated.keys():
1107	# Create and start a thread to start the segment, and save it
1108	# to get the return value later
1109	thread_pool.wait_for_slot()
1110	uri = tbparams[tb].get('uri', self.tbmap.get(tb, None))
1111	if not uri:
1112	raise service_error(service_error.internal,
1113	"Unknown testbed %s !?" % tb)
1114
1115	if tbparams[tb].has_key('allocID') and \
1116	tbparams[tb]['allocID'].has_key('fedid'):
1117	aid = tbparams[tb]['allocID']['fedid']
1118	else:
1119	raise service_error(service_error.internal,
1120	"No alloc id for testbed %s !?" % tb)
1121
1122	t = self.pooled_thread(\
1123	target=self.start_segment(log=log, debug=self.debug,
1124	testbed=tb, cert_file=self.cert_file,
1125	cert_pwd=self.cert_pwd,
1126	trusted_certs=self.trusted_certs,
1127	caller=self.call_StartSegment,
1128	log_collector=log_collector),
1129	args=(uri, aid, topo[tb], masters, attrs, connInfo[tb]),
1130	name=tb,
1131	pdata=thread_pool, trace_file=self.trace_file)
1132	threads.append(t)
1133	t.start()
1134
1135	# Wait until all finish (keep pinging the log, though)
1136	mins = 0
1137	revoked = False
1138	while not thread_pool.wait_for_all_done(60.0):
1139	mins += 1
1140	alloc_log.info("Waiting for sub threads (it has been %d mins)" \
1141	% mins)
1142	if not revoked and \
1143	len([ t.getName() for t in threads if t.rv == False]) > 0:
1144	# a testbed has failed. Revoke this experiment's
1145	# synchronizarion values so that sub experiments will not
1146	# deadlock waiting for synchronization that will never happen
1147	self.log.info("A subexperiment has failed to swap in, " + \
1148	"revoking synch keys")
1149	var_key = "fedid:%s" % expid
1150	for k in self.synch_store.all_keys():
1151	if len(k) > 45 and k[0:46] == var_key:
1152	self.synch_store.revoke_key(k)
1153	revoked = True
1154
1155	failed = [ t.getName() for t in threads if not t.rv ]
1156	succeeded = [tb for tb in allocated.keys() if tb not in failed]
1157
1158	# If one failed clean up, unless fail_soft is set
1159	if failed:
1160	if not fail_soft:
1161	thread_pool.clear()
1162	for tb in succeeded:
1163	# Create and start a thread to stop the segment
1164	thread_pool.wait_for_slot()
1165	uri = tbparams[tb]['uri']
1166	t = self.pooled_thread(\
1167	target=self.terminate_segment(log=log,
1168	testbed=tb,
1169	cert_file=self.cert_file,
1170	cert_pwd=self.cert_pwd,
1171	trusted_certs=self.trusted_certs,
1172	caller=self.call_TerminateSegment),
1173	args=(uri, tbparams[tb]['federant']['allocID']),
1174	name=tb,
1175	pdata=thread_pool, trace_file=self.trace_file)
1176	t.start()
1177	# Wait until all finish (if any are being stopped)
1178	if succeeded:
1179	thread_pool.wait_for_all_done()
1180
1181	# release the allocations
1182	for tb in tbparams.keys():
1183	self.release_access(tb, tbparams[tb]['allocID'],
1184	tbparams[tb].get('uri', None))
1185	# Remove the placeholder
1186	self.state_lock.acquire()
1187	self.state[eid]['experimentStatus'] = 'failed'
1188	if self.state_filename: self.write_state()
1189	self.state_lock.release()
1190
1191	log.error("Swap in failed on %s" % ",".join(failed))
1192	return
1193	else:
1194	log.info("[start_segment]: Experiment %s active" % eid)
1195
1196
1197	# Walk up tmpdir, deleting as we go
1198	if self.cleanup:
1199	log.debug("[start_experiment]: removing %s" % tmpdir)
1200	for path, dirs, files in os.walk(tmpdir, topdown=False):
1201	for f in files:
1202	os.remove(os.path.join(path, f))
1203	for d in dirs:
1204	os.rmdir(os.path.join(path, d))
1205	os.rmdir(tmpdir)
1206	else:
1207	log.debug("[start_experiment]: not removing %s" % tmpdir)
1208
1209	# Insert the experiment into our state and update the disk copy
1210	self.state_lock.acquire()
1211	self.state[expid]['experimentStatus'] = 'active'
1212	self.state[eid] = self.state[expid]
1213	if self.state_filename: self.write_state()
1214	self.state_lock.release()
1215	return
1216
1217
1218	def add_kit(self, e, kit):
1219	"""
1220	Add a Software object created from the list of (install, location)
1221	tuples passed as kit to the software attribute of an object e. We
1222	do this enough to break out the code, but it's kind of a hack to
1223	avoid changing the old tuple rep.
1224	"""
1225
1226	s = [ topdl.Software(install=i, location=l) for i, l in kit]
1227
1228	if isinstance(e.software, list): e.software.extend(s)
1229	else: e.software = s
1230
1231
1232	def create_experiment_state(self, fid, req, expid, expcert,
1233	state='starting'):
1234	"""
1235	Create the initial entry in the experiment's state. The expid and
1236	expcert are the experiment's fedid and certifacte that represents that
1237	ID, which are installed in the experiment state. If the request
1238	includes a suggested local name that is used if possible. If the local
1239	name is already taken by an experiment owned by this user that has
1240	failed, it is overwritten. Otherwise new letters are added until a
1241	valid localname is found. The generated local name is returned.
1242	"""
1243
1244	if req.has_key('experimentID') and \
1245	req['experimentID'].has_key('localname'):
1246	overwrite = False
1247	eid = req['experimentID']['localname']
1248	# If there's an old failed experiment here with the same local name
1249	# and accessible by this user, we'll overwrite it, otherwise we'll
1250	# fall through and do the collision avoidance.
1251	old_expid = self.get_experiment_fedid(eid)
1252	if old_expid and self.check_experiment_access(fid, old_expid):
1253	self.state_lock.acquire()
1254	status = self.state[eid].get('experimentStatus', None)
1255	if status and status == 'failed':
1256	# remove the old access attribute
1257	self.auth.unset_attribute(fid, old_expid)
1258	overwrite = True
1259	del self.state[eid]
1260	del self.state[old_expid]
1261	self.state_lock.release()
1262	self.state_lock.acquire()
1263	while (self.state.has_key(eid) and not overwrite):
1264	eid += random.choice(string.ascii_letters)
1265	# Initial state
1266	self.state[eid] = {
1267	'experimentID' : \
1268	[ { 'localname' : eid }, {'fedid': expid } ],
1269	'experimentStatus': state,
1270	'experimentAccess': { 'X509' : expcert },
1271	'owner': fid,
1272	'log' : [],
1273	}
1274	self.state[expid] = self.state[eid]
1275	if self.state_filename: self.write_state()
1276	self.state_lock.release()
1277	else:
1278	eid = self.exp_stem
1279	for i in range(0,5):
1280	eid += random.choice(string.ascii_letters)
1281	self.state_lock.acquire()
1282	while (self.state.has_key(eid)):
1283	eid = self.exp_stem
1284	for i in range(0,5):
1285	eid += random.choice(string.ascii_letters)
1286	# Initial state
1287	self.state[eid] = {
1288	'experimentID' : \
1289	[ { 'localname' : eid }, {'fedid': expid } ],
1290	'experimentStatus': state,
1291	'experimentAccess': { 'X509' : expcert },
1292	'owner': fid,
1293	'log' : [],
1294	}
1295	self.state[expid] = self.state[eid]
1296	if self.state_filename: self.write_state()
1297	self.state_lock.release()
1298
1299	return eid
1300
1301
1302	def allocate_ips_to_topo(self, top):
1303	"""
1304	Add an ip4_address attribute to all the hosts in the topology, based on
1305	the shared substrates on which they sit. An /etc/hosts file is also
1306	created and returned as a list of hostfiles entries. We also return
1307	the allocator, because we may need to allocate IPs to portals
1308	(specifically DRAGON portals).
1309	"""
1310	subs = sorted(top.substrates,
1311	cmp=lambda x,y: cmp(len(x.interfaces), len(y.interfaces)),
1312	reverse=True)
1313	ips = ip_allocator(int(ip_addr("10.0.0.0")), 2 **24)
1314	ifs = { }
1315	hosts = [ ]
1316
1317	for idx, s in enumerate(subs):
1318	net_size = len(s.interfaces)+2
1319
1320	a = ips.allocate(net_size)
1321	if a :
1322	base, num = a
1323	if num < net_size:
1324	raise service_error(service_error.internal,
1325	"Allocator returned wrong number of IPs??")
1326	else:
1327	raise service_error(service_error.req,
1328	"Cannot allocate IP addresses")
1329	mask = ips.min_alloc
1330	while mask < net_size:
1331	mask *= 2
1332
1333	netmask = ((2**32-1) ^ (mask-1))
1334
1335	base += 1
1336	for i in s.interfaces:
1337	i.attribute.append(
1338	topdl.Attribute('ip4_address',
1339	"%s" % ip_addr(base)))
1340	i.attribute.append(
1341	topdl.Attribute('ip4_netmask',
1342	"%s" % ip_addr(int(netmask))))
1343
1344	hname = i.element.name[0]
1345	if ifs.has_key(hname):
1346	hosts.append("%s\t%s-%s %s-%d" % \
1347	(ip_addr(base), hname, s.name, hname,
1348	ifs[hname]))
1349	else:
1350	ifs[hname] = 0
1351	hosts.append("%s\t%s-%s %s-%d %s" % \
1352	(ip_addr(base), hname, s.name, hname,
1353	ifs[hname], hname))
1354
1355	ifs[hname] += 1
1356	base += 1
1357	return hosts, ips
1358
1359	def get_access_to_testbeds(self, testbeds, access_user, allocated,
1360	tbparams, masters):
1361	"""
1362	Request access to the various testbeds required for this instantiation
1363	(passed in as testbeds). User, access_user, expoert_project and master
1364	are used to construct the correct requests. Per-testbed parameters are
1365	returned in tbparams.
1366	"""
1367	for tb in testbeds:
1368	self.get_access(tb, None, tbparams, access_user, masters)
1369	allocated[tb] = 1
1370
1371	def split_topology(self, top, topo, testbeds):
1372	"""
1373	Create the sub-topologies that are needed for experiment instantiation.
1374	"""
1375	for tb in testbeds:
1376	topo[tb] = top.clone()
1377	# copy in for loop allows deletions from the original
1378	for e in [ e for e in topo[tb].elements]:
1379	etb = e.get_attribute('testbed')
1380	# NB: elements without a testbed attribute won't appear in any
1381	# sub topologies.
1382	if not etb or etb != tb:
1383	for i in e.interface:
1384	for s in i.subs:
1385	try:
1386	s.interfaces.remove(i)
1387	except ValueError:
1388	raise service_error(service_error.internal,
1389	"Can't remove interface??")
1390	topo[tb].elements.remove(e)
1391	topo[tb].make_indices()
1392
1393	def wrangle_software(self, expid, top, topo, tbparams):
1394	"""
1395	Copy software out to the repository directory, allocate permissions and
1396	rewrite the segment topologies to look for the software in local
1397	places.
1398	"""
1399
1400	# Copy the rpms and tarfiles to a distribution directory from
1401	# which the federants can retrieve them
1402	linkpath = "%s/software" % expid
1403	softdir ="%s/%s" % ( self.repodir, linkpath)
1404	softmap = { }
1405	# These are in a list of tuples format (each kit). This comprehension
1406	# unwraps them into a single list of tuples that initilaizes the set of
1407	# tuples.
1408	pkgs = set([ t for l in [self.fedkit, self.gatewaykit] \
1409	for p, t in l ])
1410	pkgs.update([x.location for e in top.elements \
1411	for x in e.software])
1412	try:
1413	os.makedirs(softdir)
1414	except IOError, e:
1415	raise service_error(
1416	"Cannot create software directory: %s" % e)
1417	# The actual copying. Everything's converted into a url for copying.
1418	for pkg in pkgs:
1419	loc = pkg
1420
1421	scheme, host, path = urlparse(loc)[0:3]
1422	dest = os.path.basename(path)
1423	if not scheme:
1424	if not loc.startswith('/'):
1425	loc = "/%s" % loc
1426	loc = "file://%s" %loc
1427	try:
1428	u = urlopen(loc)
1429	except Exception, e:
1430	raise service_error(service_error.req,
1431	"Cannot open %s: %s" % (loc, e))
1432	try:
1433	f = open("%s/%s" % (softdir, dest) , "w")
1434	self.log.debug("Writing %s/%s" % (softdir,dest) )
1435	data = u.read(4096)
1436	while data:
1437	f.write(data)
1438	data = u.read(4096)
1439	f.close()
1440	u.close()
1441	except Exception, e:
1442	raise service_error(service_error.internal,
1443	"Could not copy %s: %s" % (loc, e))
1444	path = re.sub("/tmp", "", linkpath)
1445	# XXX
1446	softmap[pkg] = \
1447	"%s/%s/%s" %\
1448	( self.repo_url, path, dest)
1449
1450	# Allow the individual segments to access the software.
1451	for tb in tbparams.keys():
1452	self.auth.set_attribute(tbparams[tb]['allocID']['fedid'],
1453	"/%s/%s" % ( path, dest))
1454
1455	# Convert the software locations in the segments into the local
1456	# copies on this host
1457	for soft in [ s for tb in topo.values() \
1458	for e in tb.elements \
1459	if getattr(e, 'software', False) \
1460	for s in e.software ]:
1461	if softmap.has_key(soft.location):
1462	soft.location = softmap[soft.location]
1463
1464
1465	def new_experiment(self, req, fid):
1466	"""
1467	The external interface to empty initial experiment creation called from
1468	the dispatcher.
1469
1470	Creates a working directory, splits the incoming description using the
1471	splitter script and parses out the avrious subsections using the
1472	lcasses above. Once each sub-experiment is created, use pooled threads
1473	to instantiate them and start it all up.
1474	"""
1475	if not self.auth.check_attribute(fid, 'new'):
1476	raise service_error(service_error.access, "New access denied")
1477
1478	try:
1479	tmpdir = tempfile.mkdtemp(prefix="split-")
1480	except IOError:
1481	raise service_error(service_error.internal, "Cannot create tmp dir")
1482
1483	try:
1484	access_user = self.accessdb[fid]
1485	except KeyError:
1486	raise service_error(service_error.internal,
1487	"Access map and authorizer out of sync in " + \
1488	"new_experiment for fedid %s" % fid)
1489
1490	pid = "dummy"
1491	gid = "dummy"
1492
1493	req = req.get('NewRequestBody', None)
1494	if not req:
1495	raise service_error(service_error.req,
1496	"Bad request format (no NewRequestBody)")
1497
1498	# Generate an ID for the experiment (slice) and a certificate that the
1499	# allocator can use to prove they own it. We'll ship it back through
1500	# the encrypted connection.
1501	(expid, expcert) = generate_fedid("test", dir=tmpdir, log=self.log)
1502
1503	#now we're done with the tmpdir, and it should be empty
1504	if self.cleanup:
1505	self.log.debug("[new_experiment]: removing %s" % tmpdir)
1506	os.rmdir(tmpdir)
1507	else:
1508	self.log.debug("[new_experiment]: not removing %s" % tmpdir)
1509
1510	eid = self.create_experiment_state(fid, req, expid, expcert,
1511	state='empty')
1512
1513	# Let users touch the state
1514	self.auth.set_attribute(fid, expid)
1515	self.auth.set_attribute(expid, expid)
1516	# Override fedids can manipulate state as well
1517	for o in self.overrides:
1518	self.auth.set_attribute(o, expid)
1519
1520	rv = {
1521	'experimentID': [
1522	{'localname' : eid }, { 'fedid': copy.copy(expid) }
1523	],
1524	'experimentStatus': 'empty',
1525	'experimentAccess': { 'X509' : expcert }
1526	}
1527
1528	return rv
1529
1530	def create_experiment(self, req, fid):
1531	"""
1532	The external interface to experiment creation called from the
1533	dispatcher.
1534
1535	Creates a working directory, splits the incoming description using the
1536	splitter script and parses out the various subsections using the
1537	classes above. Once each sub-experiment is created, use pooled threads
1538	to instantiate them and start it all up.
1539	"""
1540
1541	req = req.get('CreateRequestBody', None)
1542	if not req:
1543	raise service_error(service_error.req,
1544	"Bad request format (no CreateRequestBody)")
1545
1546	# Get the experiment access
1547	exp = req.get('experimentID', None)
1548	if exp:
1549	if exp.has_key('fedid'):
1550	key = exp['fedid']
1551	expid = key
1552	eid = None
1553	elif exp.has_key('localname'):
1554	key = exp['localname']
1555	eid = key
1556	expid = None
1557	else:
1558	raise service_error(service_error.req, "Unknown lookup type")
1559	else:
1560	raise service_error(service_error.req, "No request?")
1561
1562	self.check_experiment_access(fid, key)
1563
1564	try:
1565	tmpdir = tempfile.mkdtemp(prefix="split-")
1566	os.mkdir(tmpdir+"/keys")
1567	except IOError:
1568	raise service_error(service_error.internal, "Cannot create tmp dir")
1569
1570	gw_pubkey_base = "fed.%s.pub" % self.ssh_type
1571	gw_secretkey_base = "fed.%s" % self.ssh_type
1572	gw_pubkey = tmpdir + "/keys/" + gw_pubkey_base
1573	gw_secretkey = tmpdir + "/keys/" + gw_secretkey_base
1574	tclfile = tmpdir + "/experiment.tcl"
1575	tbparams = { }
1576	try:
1577	access_user = self.accessdb[fid]
1578	except KeyError:
1579	raise service_error(service_error.internal,
1580	"Access map and authorizer out of sync in " + \
1581	"create_experiment for fedid %s" % fid)
1582
1583	pid = "dummy"
1584	gid = "dummy"
1585
1586	# The tcl parser needs to read a file so put the content into that file
1587	descr=req.get('experimentdescription', None)
1588	if descr:
1589	file_content=descr.get('ns2description', None)
1590	if file_content:
1591	try:
1592	f = open(tclfile, 'w')
1593	f.write(file_content)
1594	f.close()
1595	except IOError:
1596	raise service_error(service_error.internal,
1597	"Cannot write temp experiment description")
1598	else:
1599	raise service_error(service_error.req,
1600	"Only ns2descriptions supported")
1601	else:
1602	raise service_error(service_error.req, "No experiment description")
1603
1604	self.state_lock.acquire()
1605	if self.state.has_key(key):
1606	self.state[key]['experimentStatus'] = "starting"
1607	for e in self.state[key].get('experimentID',[]):
1608	if not expid and e.has_key('fedid'):
1609	expid = e['fedid']
1610	elif not eid and e.has_key('localname'):
1611	eid = e['localname']
1612	self.state_lock.release()
1613
1614	if not (eid and expid):
1615	raise service_error(service_error.internal,
1616	"Cannot find local experiment info!?")
1617
1618	try:
1619	# This catches exceptions to clear the placeholder if necessary
1620	try:
1621	self.generate_ssh_keys(gw_secretkey, self.ssh_type)
1622	except ValueError:
1623	raise service_error(service_error.server_config,
1624	"Bad key type (%s)" % self.ssh_type)
1625
1626	# Copy the service request
1627	tb_services = [ s for s in req.get('service',[]) ]
1628	# Translate to topdl
1629	if self.splitter_url:
1630	# XXX: need remote topdl translator
1631	self.log.debug("Calling remote splitter at %s" % \
1632	self.splitter_url)
1633	top = self.remote_ns2topdl(self.splitter_url, file_content)
1634	else:
1635	tclcmd = [self.tclsh, self.tcl_splitter, '-t', '-x',
1636	str(self.muxmax), '-m', 'dummy']
1637
1638	tclcmd.extend([pid, gid, eid, tclfile])
1639
1640	self.log.debug("running local splitter %s", " ".join(tclcmd))
1641	# This is just fantastic. As a side effect the parser copies
1642	# tb_compat.tcl into the current directory, so that directory
1643	# must be writable by the fedd user. Doing this in the
1644	# temporary subdir ensures this is the case.
1645	tclparser = Popen(tclcmd, stdout=PIPE, close_fds=True,
1646	cwd=tmpdir)
1647	split_data = tclparser.stdout
1648
1649	top = topdl.topology_from_xml(file=split_data, top="experiment")
1650
1651	hosts, ip_allocator = self.allocate_ips_to_topo(top)
1652	# Find the testbeds to look up
1653	testbeds = set([ a.value for e in top.elements \
1654	for a in e.attribute \
1655	if a.attribute == 'testbed'])
1656
1657	masters = { } # testbeds exporting services
1658	for s in tb_services:
1659	# If this is a project_export request with the imports field
1660	# blank, fill it in.
1661	if s.get('name', '') == 'project_export':
1662	if 'import' not in s or len(s['import']) == 0:
1663	s['import'] = [ tb for tb in testbeds \
1664	if tb not in s.get('export',[])]
1665	# Add the service to masters
1666	for tb in s.get('export', []):
1667	if s.get('name', None) and s.get('import', None):
1668	if tb not in masters:
1669	masters[tb] = [ ]
1670
1671	params = { }
1672	if 'fedAttr' in s:
1673	for a in s['fedAttr']:
1674	params[a.get('attribute', '')] = \
1675	a.get('value','')
1676
1677	masters[tb].append(federated_service(name=s['name'],
1678	exporter=tb, importers=s.get('import',[]),
1679	params=params))
1680	else:
1681	log.error('Testbed service does not have name " + \
1682	"and importers')
1683
1684
1685	allocated = { } # Testbeds we can access
1686	topo ={ } # Sub topologies
1687	connInfo = { } # Connection information
1688	self.get_access_to_testbeds(testbeds, access_user, allocated,
1689	tbparams, masters)
1690
1691	self.split_topology(top, topo, testbeds)
1692
1693	# Copy configuration files into the remote file store
1694	# The config urlpath
1695	configpath = "/%s/config" % expid
1696	# The config file system location
1697	configdir ="%s%s" % ( self.repodir, configpath)
1698	try:
1699	os.makedirs(configdir)
1700	except IOError, e:
1701	raise service_error(
1702	"Cannot create config directory: %s" % e)
1703	try:
1704	f = open("%s/hosts" % configdir, "w")
1705	f.write('\n'.join(hosts))
1706	f.close()
1707	except IOError, e:
1708	raise service_error(service_error.internal,
1709	"Cannot write hosts file: %s" % e)
1710	try:
1711	copy_file("%s" % gw_pubkey, "%s/%s" % \
1712	(configdir, gw_pubkey_base))
1713	copy_file("%s" % gw_secretkey, "%s/%s" % \
1714	(configdir, gw_secretkey_base))
1715	except IOError, e:
1716	raise service_error(service_error.internal,
1717	"Cannot copy keyfiles: %s" % e)
1718
1719	# Allow the individual testbeds to access the configuration files.
1720	for tb in tbparams.keys():
1721	asignee = tbparams[tb]['allocID']['fedid']
1722	for f in ("hosts", gw_secretkey_base, gw_pubkey_base):
1723	self.auth.set_attribute(asignee, "%s/%s" % (configpath, f))
1724
1725	part = experiment_partition(self.auth, self.store_url, self.tbmap,
1726	self.muxmax)
1727	part.add_portals(top, topo, eid, masters, tbparams, ip_allocator,
1728	connInfo, expid)
1729	# Now get access to the dynamic testbeds
1730	for k, t in topo.items():
1731	if not t.get_attribute('dynamic'):
1732	continue
1733	tb = t.get_attribute('testbed')
1734	if tb:
1735	self.get_access(tb, None, tbparams, export_project,
1736	access_user, masters)
1737	tbparams[k] = tbparams[tb]
1738	del tbparams[tb]
1739	allocated[k] = 1
1740	store_keys = t.get_attribute('store_keys')
1741	# Give the testbed access to keys it exports or imports
1742	if store_keys:
1743	for sk in store_keys.split(" "):
1744	self.auth.set_attribute(\
1745	tbparams[k]['allocID']['fedid'], sk)
1746	else:
1747	raise service_error(service_error.internal,
1748	"Dynamic allocation from no testbed!?")
1749
1750	self.wrangle_software(expid, top, topo, tbparams)
1751
1752	vtopo = topdl.topology_to_vtopo(top)
1753	vis = self.genviz(vtopo)
1754
1755	# save federant information
1756	for k in allocated.keys():
1757	tbparams[k]['federant'] = {
1758	'name': [ { 'localname' : eid} ],
1759	'allocID' : tbparams[k]['allocID'],
1760	# XXX:
1761	'master' : False,
1762	'uri': tbparams[k]['uri'],
1763	}
1764	if tbparams[k].has_key('emulab'):
1765	tbparams[k]['federant']['emulab'] = \
1766	tbparams[k]['emulab']
1767
1768	self.state_lock.acquire()
1769	self.state[eid]['vtopo'] = vtopo
1770	self.state[eid]['vis'] = vis
1771	self.state[expid]['federant'] = \
1772	[ tbparams[tb]['federant'] for tb in tbparams.keys() \
1773	if tbparams[tb].has_key('federant') ]
1774	if self.state_filename:
1775	self.write_state()
1776	self.state_lock.release()
1777	except service_error, e:
1778	# If something goes wrong in the parse (usually an access error)
1779	# clear the placeholder state. From here on out the code delays
1780	# exceptions. Failing at this point returns a fault to the remote
1781	# caller.
1782
1783	self.state_lock.acquire()
1784	del self.state[eid]
1785	del self.state[expid]
1786	if self.state_filename: self.write_state()
1787	self.state_lock.release()
1788	raise e
1789
1790
1791	# Start the background swapper and return the starting state. From
1792	# here on out, the state will stick around a while.
1793
1794	# Let users touch the state
1795	self.auth.set_attribute(fid, expid)
1796	self.auth.set_attribute(expid, expid)
1797	# Override fedids can manipulate state as well
1798	for o in self.overrides:
1799	self.auth.set_attribute(o, expid)
1800
1801	# Create a logger that logs to the experiment's state object as well as
1802	# to the main log file.
1803	alloc_log = logging.getLogger('fedd.experiment_control.%s' % eid)
1804	alloc_collector = self.list_log(self.state[eid]['log'])
1805	h = logging.StreamHandler(alloc_collector)
1806	# XXX: there should be a global one of these rather than repeating the
1807	# code.
1808	h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s",
1809	'%d %b %y %H:%M:%S'))
1810	alloc_log.addHandler(h)
1811
1812	attrs = [
1813	{
1814	'attribute': 'ssh_pubkey',
1815	'value': '%s/%s/config/%s' % \
1816	(self.repo_url, expid, gw_pubkey_base)
1817	},
1818	{
1819	'attribute': 'ssh_secretkey',
1820	'value': '%s/%s/config/%s' % \
1821	(self.repo_url, expid, gw_secretkey_base)
1822	},
1823	{
1824	'attribute': 'hosts',
1825	'value': '%s/%s/config/hosts' % \
1826	(self.repo_url, expid)
1827	},
1828	{
1829	'attribute': 'experiment_name',
1830	'value': eid,
1831	},
1832	]
1833
1834	# transit and disconnected testbeds may not have a connInfo entry.
1835	# Fill in the blanks.
1836	for t in allocated.keys():
1837	if not connInfo.has_key(t):
1838	connInfo[t] = { }
1839
1840	# Start a thread to do the resource allocation
1841	t = Thread(target=self.allocate_resources,
1842	args=(allocated, masters, eid, expid, tbparams,
1843	topo, tmpdir, alloc_log, alloc_collector, attrs, connInfo),
1844	name=eid)
1845	t.start()
1846
1847	rv = {
1848	'experimentID': [
1849	{'localname' : eid }, { 'fedid': copy.copy(expid) }
1850	],
1851	'experimentStatus': 'starting',
1852	}
1853
1854	return rv
1855
1856	def get_experiment_fedid(self, key):
1857	"""
1858	find the fedid associated with the localname key in the state database.
1859	"""
1860
1861	rv = None
1862	self.state_lock.acquire()
1863	if self.state.has_key(key):
1864	if isinstance(self.state[key], dict):
1865	try:
1866	kl = [ f['fedid'] for f in \
1867	self.state[key]['experimentID']\
1868	if f.has_key('fedid') ]
1869	except KeyError:
1870	self.state_lock.release()
1871	raise service_error(service_error.internal,
1872	"No fedid for experiment %s when getting "+\
1873	"fedid(!?)" % key)
1874	if len(kl) == 1:
1875	rv = kl[0]
1876	else:
1877	self.state_lock.release()
1878	raise service_error(service_error.internal,
1879	"multiple fedids for experiment %s when " +\
1880	"getting fedid(!?)" % key)
1881	else:
1882	self.state_lock.release()
1883	raise service_error(service_error.internal,
1884	"Unexpected state for %s" % key)
1885	self.state_lock.release()
1886	return rv
1887
1888	def check_experiment_access(self, fid, key):
1889	"""
1890	Confirm that the fid has access to the experiment. Though a request
1891	may be made in terms of a local name, the access attribute is always
1892	the experiment's fedid.
1893	"""
1894	if not isinstance(key, fedid):
1895	key = self.get_experiment_fedid(key)
1896
1897	if self.auth.check_attribute(fid, key):
1898	return True
1899	else:
1900	raise service_error(service_error.access, "Access Denied")
1901
1902
1903	def get_handler(self, path, fid):
1904	self.log.info("Get handler %s %s" % (path, fid))
1905	if self.auth.check_attribute(fid, path):
1906	return ("%s/%s" % (self.repodir, path), "application/binary")
1907	else:
1908	return (None, None)
1909
1910	def get_vtopo(self, req, fid):
1911	"""
1912	Return the stored virtual topology for this experiment
1913	"""
1914	rv = None
1915	state = None
1916
1917	req = req.get('VtopoRequestBody', None)
1918	if not req:
1919	raise service_error(service_error.req,
1920	"Bad request format (no VtopoRequestBody)")
1921	exp = req.get('experiment', None)
1922	if exp:
1923	if exp.has_key('fedid'):
1924	key = exp['fedid']
1925	keytype = "fedid"
1926	elif exp.has_key('localname'):
1927	key = exp['localname']
1928	keytype = "localname"
1929	else:
1930	raise service_error(service_error.req, "Unknown lookup type")
1931	else:
1932	raise service_error(service_error.req, "No request?")
1933
1934	self.check_experiment_access(fid, key)
1935
1936	self.state_lock.acquire()
1937	if self.state.has_key(key):
1938	if self.state[key].has_key('vtopo'):
1939	rv = { 'experiment' : {keytype: key },\
1940	'vtopo': self.state[key]['vtopo'],\
1941	}
1942	else:
1943	state = self.state[key]['experimentStatus']
1944	self.state_lock.release()
1945
1946	if rv: return rv
1947	else:
1948	if state:
1949	raise service_error(service_error.partial,
1950	"Not ready: %s" % state)
1951	else:
1952	raise service_error(service_error.req, "No such experiment")
1953
1954	def get_vis(self, req, fid):
1955	"""
1956	Return the stored visualization for this experiment
1957	"""
1958	rv = None
1959	state = None
1960
1961	req = req.get('VisRequestBody', None)
1962	if not req:
1963	raise service_error(service_error.req,
1964	"Bad request format (no VisRequestBody)")
1965	exp = req.get('experiment', None)
1966	if exp:
1967	if exp.has_key('fedid'):
1968	key = exp['fedid']
1969	keytype = "fedid"
1970	elif exp.has_key('localname'):
1971	key = exp['localname']
1972	keytype = "localname"
1973	else:
1974	raise service_error(service_error.req, "Unknown lookup type")
1975	else:
1976	raise service_error(service_error.req, "No request?")
1977
1978	self.check_experiment_access(fid, key)
1979
1980	self.state_lock.acquire()
1981	if self.state.has_key(key):
1982	if self.state[key].has_key('vis'):
1983	rv = { 'experiment' : {keytype: key },\
1984	'vis': self.state[key]['vis'],\
1985	}
1986	else:
1987	state = self.state[key]['experimentStatus']
1988	self.state_lock.release()
1989
1990	if rv: return rv
1991	else:
1992	if state:
1993	raise service_error(service_error.partial,
1994	"Not ready: %s" % state)
1995	else:
1996	raise service_error(service_error.req, "No such experiment")
1997
1998	def clean_info_response(self, rv):
1999	"""
2000	Remove the information in the experiment's state object that is not in
2001	the info response.
2002	"""
2003	# Remove the owner info (should always be there, but...)
2004	if rv.has_key('owner'): del rv['owner']
2005
2006	# Convert the log into the allocationLog parameter and remove the
2007	# log entry (with defensive programming)
2008	if rv.has_key('log'):
2009	rv['allocationLog'] = "".join(rv['log'])
2010	del rv['log']
2011	else:
2012	rv['allocationLog'] = ""
2013
2014	if rv['experimentStatus'] != 'active':
2015	if rv.has_key('federant'): del rv['federant']
2016	else:
2017	# remove the allocationID and uri info from each federant
2018	for f in rv.get('federant', []):
2019	if f.has_key('allocID'): del f['allocID']
2020	if f.has_key('uri'): del f['uri']
2021	return rv
2022
2023	def get_info(self, req, fid):
2024	"""
2025	Return all the stored info about this experiment
2026	"""
2027	rv = None
2028
2029	req = req.get('InfoRequestBody', None)
2030	if not req:
2031	raise service_error(service_error.req,
2032	"Bad request format (no InfoRequestBody)")
2033	exp = req.get('experiment', None)
2034	if exp:
2035	if exp.has_key('fedid'):
2036	key = exp['fedid']
2037	keytype = "fedid"
2038	elif exp.has_key('localname'):
2039	key = exp['localname']
2040	keytype = "localname"
2041	else:
2042	raise service_error(service_error.req, "Unknown lookup type")
2043	else:
2044	raise service_error(service_error.req, "No request?")
2045
2046	self.check_experiment_access(fid, key)
2047
2048	# The state may be massaged by the service function that called
2049	# get_info (e.g., encoded for XMLRPC transport) so send a copy of the
2050	# state.
2051	self.state_lock.acquire()
2052	if self.state.has_key(key):
2053	rv = copy.deepcopy(self.state[key])
2054	self.state_lock.release()
2055
2056	if rv:
2057	return self.clean_info_response(rv)
2058	else:
2059	raise service_error(service_error.req, "No such experiment")
2060
2061	def get_multi_info(self, req, fid):
2062	"""
2063	Return all the stored info that this fedid can access
2064	"""
2065	rv = { 'info': [ ] }
2066
2067	self.state_lock.acquire()
2068	for key in [ k for k in self.state.keys() if isinstance(k, fedid)]:
2069	try:
2070	self.check_experiment_access(fid, key)
2071	except service_error, e:
2072	if e.code == service_error.access:
2073	continue
2074	else:
2075	self.state_lock.release()
2076	raise e
2077
2078	if self.state.has_key(key):
2079	e = copy.deepcopy(self.state[key])
2080	e = self.clean_info_response(e)
2081	rv['info'].append(e)
2082	self.state_lock.release()
2083	return rv
2084
2085	def terminate_experiment(self, req, fid):
2086	"""
2087	Swap this experiment out on the federants and delete the shared
2088	information
2089	"""
2090	tbparams = { }
2091	req = req.get('TerminateRequestBody', None)
2092	if not req:
2093	raise service_error(service_error.req,
2094	"Bad request format (no TerminateRequestBody)")
2095	force = req.get('force', False)
2096	exp = req.get('experiment', None)
2097	if exp:
2098	if exp.has_key('fedid'):
2099	key = exp['fedid']
2100	keytype = "fedid"
2101	elif exp.has_key('localname'):
2102	key = exp['localname']
2103	keytype = "localname"
2104	else:
2105	raise service_error(service_error.req, "Unknown lookup type")
2106	else:
2107	raise service_error(service_error.req, "No request?")
2108
2109	self.check_experiment_access(fid, key)
2110
2111	dealloc_list = [ ]
2112
2113
2114	# Create a logger that logs to the dealloc_list as well as to the main
2115	# log file.
2116	dealloc_log = logging.getLogger('fedd.experiment_control.%s' % key)
2117	h = logging.StreamHandler(self.list_log(dealloc_list))
2118	# XXX: there should be a global one of these rather than repeating the
2119	# code.
2120	h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s",
2121	'%d %b %y %H:%M:%S'))
2122	dealloc_log.addHandler(h)
2123
2124	self.state_lock.acquire()
2125	fed_exp = self.state.get(key, None)
2126
2127	if fed_exp:
2128	# This branch of the conditional holds the lock to generate a
2129	# consistent temporary tbparams variable to deallocate experiments.
2130	# It releases the lock to do the deallocations and reacquires it to
2131	# remove the experiment state when the termination is complete.
2132
2133	# First make sure that the experiment creation is complete.
2134	status = fed_exp.get('experimentStatus', None)
2135
2136	if status:
2137	if status in ('starting', 'terminating'):
2138	if not force:
2139	self.state_lock.release()
2140	raise service_error(service_error.partial,
2141	'Experiment still being created or destroyed')
2142	else:
2143	self.log.warning('Experiment in %s state ' % status + \
2144	'being terminated by force.')
2145	else:
2146	# No status??? trouble
2147	self.state_lock.release()
2148	raise service_error(service_error.internal,
2149	"Experiment has no status!?")
2150
2151	ids = []
2152	# experimentID is a list of dicts that are self-describing
2153	# identifiers. This finds all the fedids and localnames - the
2154	# keys of self.state - and puts them into ids.
2155	for id in fed_exp.get('experimentID', []):
2156	if id.has_key('fedid'): ids.append(id['fedid'])
2157	if id.has_key('localname'): ids.append(id['localname'])
2158
2159	# Collect the allocation/segment ids into a dict keyed by the fedid
2160	# of the allocation (or a monotonically increasing integer) that
2161	# contains a tuple of uri, aid (which is a dict...)
2162	for i, fed in enumerate(fed_exp.get('federant', [])):
2163	try:
2164	uri = fed['uri']
2165	aid = fed['allocID']
2166	k = fed['allocID'].get('fedid', i)
2167	except KeyError, e:
2168	continue
2169	tbparams[k] = (uri, aid)
2170	fed_exp['experimentStatus'] = 'terminating'
2171	if self.state_filename: self.write_state()
2172	self.state_lock.release()
2173
2174	# Stop everyone. NB, wait_for_all waits until a thread starts and
2175	# then completes, so we can't wait if nothing starts. So, no
2176	# tbparams, no start.
2177	if len(tbparams) > 0:
2178	thread_pool = self.thread_pool(self.nthreads)
2179	for k in tbparams.keys():
2180	# Create and start a thread to stop the segment
2181	thread_pool.wait_for_slot()
2182	uri, aid = tbparams[k]
2183	t = self.pooled_thread(\
2184	target=self.terminate_segment(log=dealloc_log,
2185	testbed=uri,
2186	cert_file=self.cert_file,
2187	cert_pwd=self.cert_pwd,
2188	trusted_certs=self.trusted_certs,
2189	caller=self.call_TerminateSegment),
2190	args=(uri, aid), name=k,
2191	pdata=thread_pool, trace_file=self.trace_file)
2192	t.start()
2193	# Wait for completions
2194	thread_pool.wait_for_all_done()
2195
2196	# release the allocations (failed experiments have done this
2197	# already, and starting experiments may be in odd states, so we
2198	# ignore errors releasing those allocations
2199	try:
2200	for k in tbparams.keys():
2201	# This releases access by uri
2202	uri, aid = tbparams[k]
2203	self.release_access(None, aid, uri=uri)
2204	except service_error, e:
2205	if status != 'failed' and not force:
2206	raise e
2207
2208	# Remove the terminated experiment
2209	self.state_lock.acquire()
2210	for id in ids:
2211	if self.state.has_key(id): del self.state[id]
2212
2213	if self.state_filename: self.write_state()
2214	self.state_lock.release()
2215
2216	# Delete any synch points associated with this experiment. All
2217	# synch points begin with the fedid of the experiment.
2218	fedid_keys = set(["fedid:%s" % f for f in ids \
2219	if isinstance(f, fedid)])
2220	for k in self.synch_store.all_keys():
2221	try:
2222	if len(k) > 45 and k[0:46] in fedid_keys:
2223	self.synch_store.del_value(k)
2224	except synch_store.BadDeletionError:
2225	pass
2226	self.write_store()
2227
2228	return {
2229	'experiment': exp ,
2230	'deallocationLog': "".join(dealloc_list),
2231	}
2232	else:
2233	# Don't forget to release the lock
2234	self.state_lock.release()
2235	raise service_error(service_error.req, "No saved state")
2236
2237
2238	def GetValue(self, req, fid):
2239	"""
2240	Get a value from the synchronized store
2241	"""
2242	req = req.get('GetValueRequestBody', None)
2243	if not req:
2244	raise service_error(service_error.req,
2245	"Bad request format (no GetValueRequestBody)")
2246
2247	name = req['name']
2248	wait = req['wait']
2249	rv = { 'name': name }
2250
2251	if self.auth.check_attribute(fid, name):
2252	try:
2253	v = self.synch_store.get_value(name, wait)
2254	except synch_store.RevokedKeyError:
2255	# No more synch on this key
2256	raise service_error(service_error.federant,
2257	"Synch key %s revoked" % name)
2258	if v is not None:
2259	rv['value'] = v
2260	self.log.debug("[GetValue] got %s from %s" % (v, name))
2261	return rv
2262	else:
2263	raise service_error(service_error.access, "Access Denied")
2264
2265
2266	def SetValue(self, req, fid):
2267	"""
2268	Set a value in the synchronized store
2269	"""
2270	req = req.get('SetValueRequestBody', None)
2271	if not req:
2272	raise service_error(service_error.req,
2273	"Bad request format (no SetValueRequestBody)")
2274
2275	name = req['name']
2276	v = req['value']
2277
2278	if self.auth.check_attribute(fid, name):
2279	try:
2280	self.synch_store.set_value(name, v)
2281	self.write_store()
2282	self.log.debug("[SetValue] set %s to %s" % (name, v))
2283	except synch_store.CollisionError:
2284	# Translate into a service_error
2285	raise service_error(service_error.req,
2286	"Value already set: %s" %name)
2287	except synch_store.RevokedKeyError:
2288	# No more synch on this key
2289	raise service_error(service_error.federant,
2290	"Synch key %s revoked" % name)
2291	return { 'name': name, 'value': v }
2292	else:
2293	raise service_error(service_error.access, "Access Denied")

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