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source: fedd/federation/experiment_control.py @ ab662b6

Last change on this file since ab662b6 was ab662b6, checked in by Ted Faber <faber@…>, 12 years ago
Avoid an internal network at DETER. This will have to come out
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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	import shutil
16	import zipfile
17
18	import os.path
19
20	import traceback
21	# For parsing visualization output and splitter output
22	import xml.parsers.expat
23
24	from threading import Lock, Thread, Condition
25	from subprocess import call, Popen, PIPE
26	from string import join
27
28	from urlparse import urlparse
29	from urllib2 import urlopen, URLError
30
31	from util import *
32	from deter import fedid, generate_fedid
33	from remote_service import xmlrpc_handler, soap_handler, service_caller
34	from service_error import service_error
35	from synch_store import synch_store
36	from experiment_partition import experiment_partition
37	from experiment_control_legacy import experiment_control_legacy
38	from authorizer import abac_authorizer
39	from thread_pool import thread_pool, pooled_thread
40	from experiment_info import experiment_info, allocation_info, federated_service
41	from operation_status import operation_status
42
43	from deter import topdl
44	from deter import ip_allocator
45	from deter import ip_addr
46	import list_log
47
48
49	class nullHandler(logging.Handler):
50	def emit(self, record): pass
51
52	fl = logging.getLogger("fedd.experiment_control")
53	fl.addHandler(nullHandler())
54
55	class experiment_control_local(experiment_control_legacy):
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	call_RequestAccess = service_caller('RequestAccess')
66	call_ReleaseAccess = service_caller('ReleaseAccess')
67	call_StartSegment = service_caller('StartSegment')
68	call_TerminateSegment = service_caller('TerminateSegment')
69	call_InfoSegment = service_caller('InfoSegment')
70	call_OperationSegment = service_caller('OperationSegment')
71	call_Ns2Topdl = service_caller('Ns2Topdl')
72
73	def __init__(self, config=None, auth=None):
74	"""
75	Intialize the various attributes, most from the config object
76	"""
77
78	def parse_tarfile_list(tf):
79	"""
80	Parse a tarfile list from the configuration. This is a set of
81	paths and tarfiles separated by spaces.
82	"""
83	rv = [ ]
84	if tf is not None:
85	tl = tf.split()
86	while len(tl) > 1:
87	p, t = tl[0:2]
88	del tl[0:2]
89	rv.append((p, t))
90	return rv
91
92	self.list_log = list_log.list_log
93
94	self.cert_file = config.get("experiment_control", "cert_file")
95	if self.cert_file:
96	self.cert_pwd = config.get("experiment_control", "cert_pwd")
97	else:
98	self.cert_file = config.get("globals", "cert_file")
99	self.cert_pwd = config.get("globals", "cert_pwd")
100
101	self.trusted_certs = config.get("experiment_control", "trusted_certs") \
102	or config.get("globals", "trusted_certs")
103
104	self.repodir = config.get("experiment_control", "repodir")
105	self.repo_url = config.get("experiment_control", "repo_url",
106	"https://users.isi.deterlab.net:23235");
107
108	self.exp_stem = "fed-stem"
109	self.log = logging.getLogger("fedd.experiment_control")
110	set_log_level(config, "experiment_control", self.log)
111	self.muxmax = 2
112	self.nthreads = 10
113	self.randomize_experiments = False
114
115	self.splitter = None
116	self.ssh_keygen = "/usr/bin/ssh-keygen"
117	self.ssh_identity_file = None
118
119
120	self.debug = config.getboolean("experiment_control", "create_debug")
121	self.cleanup = not config.getboolean("experiment_control",
122	"leave_tmpfiles")
123	self.state_filename = config.get("experiment_control",
124	"experiment_state")
125	self.store_filename = config.get("experiment_control",
126	"synch_store")
127	self.store_url = config.get("experiment_control", "store_url")
128	self.splitter_url = config.get("experiment_control", "ns2topdl_uri")
129	self.grouper_url = config.get("experiment_control", "grouper_url")
130	self.fedkit = parse_tarfile_list(\
131	config.get("experiment_control", "fedkit"))
132	self.gatewaykit = parse_tarfile_list(\
133	config.get("experiment_control", "gatewaykit"))
134
135	dt = config.get("experiment_control", "direct_transit")
136	self.auth_type = config.get('experiment_control', 'auth_type') \
137	or 'legacy'
138	self.auth_dir = config.get('experiment_control', 'auth_dir')
139	# XXX: document this!
140	self.info_cache_limit = \
141	config.getint('experiment_control', 'info_cache', 600)
142	if dt: self.direct_transit = [ tb.strip() for tb in dt.split(",")]
143	else: self.direct_transit = [ ]
144	# NB for internal master/slave ops, not experiment setup
145	self.ssh_type = config.get("experiment_control", "sshkeytype", "rsa")
146
147	self.overrides = set([])
148	ovr = config.get('experiment_control', 'overrides')
149	if ovr:
150	for o in ovr.split(","):
151	o = o.strip()
152	if o.startswith('fedid:'): o = o[len('fedid:'):]
153	self.overrides.add(fedid(hexstr=o))
154
155	self.state = { }
156	self.state_lock = Lock()
157	self.tclsh = "/usr/local/bin/otclsh"
158	self.tcl_splitter = config.get("ns2topdl", "tcl_splitter") or \
159	config.get("experiment_control", "tcl_splitter",
160	"/usr/testbed/lib/ns2ir/parse.tcl")
161	mapdb_file = config.get("experiment_control", "mapdb")
162	self.trace_file = sys.stderr
163
164	self.def_expstart = \
165	"sudo -H /bin/sh /usr/local/federation/bin/federate.sh >& " +\
166	"/tmp/federate";
167	self.def_mexpstart = "sudo -H /usr/local/federation/bin/make_hosts " +\
168	"FEDDIR/hosts";
169	self.def_gwstart = \
170	"sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF>& " +\
171	"/tmp/bridge.log";
172	self.def_mgwstart = \
173	"sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF >& " +\
174	"/tmp/bridge.log";
175	self.def_gwimage = "FBSD61-TUNNEL2";
176	self.def_gwtype = "pc";
177	self.local_access = { }
178
179	if self.auth_type == 'legacy':
180	if auth:
181	self.auth = auth
182	else:
183	self.log.error( "[access]: No authorizer initialized, " +\
184	"creating local one.")
185	auth = authorizer()
186	self.get_access = self.legacy_get_access
187	elif self.auth_type == 'abac':
188	self.auth = abac_authorizer(load=self.auth_dir,
189	update=os.path.join(self.auth_dir,'update'))
190	else:
191	raise service_error(service_error.internal,
192	"Unknown auth_type: %s" % self.auth_type)
193
194	if mapdb_file:
195	self.read_mapdb(mapdb_file)
196	else:
197	self.log.warn("[experiment_control] No testbed map, using defaults")
198	self.tbmap = {
199	'deter':'https://users.isi.deterlab.net:23235',
200	'emulab':'https://users.isi.deterlab.net:23236',
201	'ucb':'https://users.isi.deterlab.net:23237',
202	}
203
204	# Grab saved state. OK to do this w/o locking because it's read only
205	# and only one thread should be in existence that can see self.state at
206	# this point.
207	if self.state_filename:
208	self.read_state()
209
210	if self.store_filename:
211	self.read_store()
212	else:
213	self.log.warning("No saved synch store")
214	self.synch_store = synch_store
215
216	# Dispatch tables
217	self.soap_services = {\
218	'New': soap_handler('New', self.new_experiment),
219	'Create': soap_handler('Create', self.create_experiment),
220	'Vtopo': soap_handler('Vtopo', self.get_vtopo),
221	'Vis': soap_handler('Vis', self.get_vis),
222	'Info': soap_handler('Info', self.get_info),
223	'MultiInfo': soap_handler('MultiInfo', self.get_multi_info),
224	'Operation': soap_handler('Operation', self.do_operation),
225	'Terminate': soap_handler('Terminate',
226	self.terminate_experiment),
227	'GetValue': soap_handler('GetValue', self.GetValue),
228	'SetValue': soap_handler('SetValue', self.SetValue),
229	}
230
231	self.xmlrpc_services = {\
232	'New': xmlrpc_handler('New', self.new_experiment),
233	'Create': xmlrpc_handler('Create', self.create_experiment),
234	'Vtopo': xmlrpc_handler('Vtopo', self.get_vtopo),
235	'Vis': xmlrpc_handler('Vis', self.get_vis),
236	'Info': xmlrpc_handler('Info', self.get_info),
237	'MultiInfo': xmlrpc_handler('MultiInfo', self.get_multi_info),
238	'Terminate': xmlrpc_handler('Terminate',
239	self.terminate_experiment),
240	'Operation': xmlrpc_handler('Operation', self.do_operation),
241	'GetValue': xmlrpc_handler('GetValue', self.GetValue),
242	'SetValue': xmlrpc_handler('SetValue', self.SetValue),
243	}
244
245	# Call while holding self.state_lock
246	def write_state(self):
247	"""
248	Write a new copy of experiment state after copying the existing state
249	to a backup.
250
251	State format is a simple pickling of the state dictionary.
252	"""
253	if os.access(self.state_filename, os.W_OK):
254	copy_file(self.state_filename, \
255	"%s.bak" % self.state_filename)
256	try:
257	f = open(self.state_filename, 'w')
258	pickle.dump(self.state, f)
259	except EnvironmentError, e:
260	self.log.error("Can't write file %s: %s" % \
261	(self.state_filename, e))
262	except pickle.PicklingError, e:
263	self.log.error("Pickling problem: %s" % e)
264	except TypeError, e:
265	self.log.error("Pickling problem (TypeError): %s" % e)
266
267	@staticmethod
268	def get_alloc_ids(exp):
269	"""
270	Used by read_store and read state. This used to be worse.
271	"""
272
273	return [ a.allocID for a in exp.get_all_allocations() ]
274
275
276	# Call while holding self.state_lock
277	def read_state(self):
278	"""
279	Read a new copy of experiment state. Old state is overwritten.
280
281	State format is a simple pickling of the state dictionary.
282	"""
283
284	try:
285	f = open(self.state_filename, "r")
286	self.state = pickle.load(f)
287	self.log.debug("[read_state]: Read state from %s" % \
288	self.state_filename)
289	except EnvironmentError, e:
290	self.log.warning("[read_state]: No saved state: Can't open %s: %s"\
291	% (self.state_filename, e))
292	except pickle.UnpicklingError, e:
293	self.log.warning(("[read_state]: No saved state: " + \
294	"Unpickling failed: %s") % e)
295
296	for s in self.state.values():
297	try:
298
299	eid = s.fedid
300	if eid :
301	if self.auth_type == 'legacy':
302	# XXX: legacy
303	# Give the owner rights to the experiment
304	#self.auth.set_attribute(s['owner'], eid)
305	# And holders of the eid as well
306	self.auth.set_attribute(eid, eid)
307	# allow overrides to control experiments as well
308	for o in self.overrides:
309	self.auth.set_attribute(o, eid)
310	# Set permissions to allow reading of the software
311	# repo, if any, as well.
312	for a in self.get_alloc_ids(s):
313	self.auth.set_attribute(a, 'repo/%s' % eid)
314	else:
315	raise KeyError("No experiment id")
316	except KeyError, e:
317	self.log.warning("[read_state]: State ownership or identity " +\
318	"misformatted in %s: %s" % (self.state_filename, e))
319
320	def read_mapdb(self, file):
321	"""
322	Read a simple colon separated list of mappings for the
323	label-to-testbed-URL mappings. Clears or creates self.tbmap.
324	also adds testbeds to active if they include , active after
325	their name.
326	"""
327
328	self.tbmap = { }
329	lineno =0
330	try:
331	f = open(file, "r")
332	for line in f:
333	lineno += 1
334	line = line.strip()
335	if line.startswith('#') or len(line) == 0:
336	continue
337	try:
338	label, url = line.split(':', 1)
339	self.tbmap[label] = url
340	except ValueError, e:
341	self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\
342	"map db: %s %s" % (lineno, line, e))
343	except EnvironmentError, e:
344	self.log.warning("[read_mapdb]: No saved map database: Can't " +\
345	"open %s: %s" % (file, e))
346	else:
347	f.close()
348
349	def read_store(self):
350	try:
351	self.synch_store = synch_store()
352	self.synch_store.load(self.store_filename)
353	self.log.debug("[read_store]: Read store from %s" % \
354	self.store_filename)
355	except EnvironmentError, e:
356	self.log.warning("[read_store]: No saved store: Can't open %s: %s"\
357	% (self.state_filename, e))
358	self.synch_store = synch_store()
359
360	# Set the initial permissions on data in the store. XXX: This ad hoc
361	# authorization attribute initialization is getting out of hand.
362	# XXX: legacy
363	if self.auth_type == 'legacy':
364	for k in self.synch_store.all_keys():
365	try:
366	if k.startswith('fedid:'):
367	fid = fedid(hexstr=k[6:46])
368	if self.state.has_key(fid):
369	for a in self.get_alloc_ids(self.state[fid]):
370	self.auth.set_attribute(a, k)
371	except ValueError, e:
372	self.log.warn("Cannot deduce permissions for %s" % k)
373
374
375	def write_store(self):
376	"""
377	Write a new copy of synch_store after writing current state
378	to a backup. We use the internal synch_store pickle method to avoid
379	incinsistent data.
380
381	State format is a simple pickling of the store.
382	"""
383	if os.access(self.store_filename, os.W_OK):
384	copy_file(self.store_filename, \
385	"%s.bak" % self.store_filename)
386	try:
387	self.synch_store.save(self.store_filename)
388	except EnvironmentError, e:
389	self.log.error("Can't write file %s: %s" % \
390	(self.store_filename, e))
391	except TypeError, e:
392	self.log.error("Pickling problem (TypeError): %s" % e)
393
394	# XXX this may belong somewhere else
395
396	def get_grouper_updates(self, fid):
397	if self.grouper_url is None: return
398	d = tempfile.mkdtemp()
399	try:
400	fstr = "%s" % fid
401	# XXX locking
402	zipname = os.path.join(d, 'grouper.zip')
403	dest = os.path.join(self.auth_dir, 'update')
404	resp = urlopen('%s?uid=%s' % (self.grouper_url, fstr))
405	f = open(zipname, 'w')
406	f.write(resp.read())
407	f.close()
408	zf = zipfile.ZipFile(zipname, 'r')
409	zf.extractall(dest)
410	zf.close()
411	except URLError, e:
412	self.log.error("Cannot connect to grouper: %s" % e)
413	pass
414	finally:
415	shutil.rmtree(d)
416
417
418	def remove_dirs(self, dir):
419	"""
420	Remove the directory tree and all files rooted at dir. Log any errors,
421	but continue.
422	"""
423	self.log.debug("[removedirs]: removing %s" % dir)
424	try:
425	for path, dirs, files in os.walk(dir, topdown=False):
426	for f in files:
427	os.remove(os.path.join(path, f))
428	for d in dirs:
429	os.rmdir(os.path.join(path, d))
430	os.rmdir(dir)
431	except EnvironmentError, e:
432	self.log.error("Error deleting directory tree in %s" % e);
433
434	@staticmethod
435	def make_temp_certfile(expcert, tmpdir):
436	"""
437	make a protected copy of the access certificate so the experiment
438	controller can act as the experiment principal. mkstemp is the most
439	secure way to do that. The directory should be created by
440	mkdtemp. Return the filename.
441	"""
442	if expcert and tmpdir:
443	try:
444	certf, certfn = tempfile.mkstemp(suffix=".pem", dir=tmpdir)
445	f = os.fdopen(certf, 'w')
446	print >> f, expcert
447	f.close()
448	except EnvironmentError, e:
449	raise service_error(service_error.internal,
450	"Cannot create temp cert file?")
451	return certfn
452	else:
453	return None
454
455
456	def generate_ssh_keys(self, dest, type="rsa" ):
457	"""
458	Generate a set of keys for the gateways to use to talk.
459
460	Keys are of type type and are stored in the required dest file.
461	"""
462	valid_types = ("rsa", "dsa")
463	t = type.lower();
464	if t not in valid_types: raise ValueError
465	cmd = [self.ssh_keygen, '-t', t, '-N', '', '-f', dest]
466
467	try:
468	trace = open("/dev/null", "w")
469	except EnvironmentError:
470	raise service_error(service_error.internal,
471	"Cannot open /dev/null??");
472
473	# May raise CalledProcessError
474	self.log.debug("[generate_ssh_keys]: %s" % " ".join(cmd))
475	rv = call(cmd, stdout=trace, stderr=trace, close_fds=True)
476	if rv != 0:
477	raise service_error(service_error.internal,
478	"Cannot generate nonce ssh keys. %s return code %d" \
479	% (self.ssh_keygen, rv))
480
481	def generate_seer_certs(self, destdir):
482	'''
483	Create a SEER ca cert and a node cert in destdir/ca.pem and
484	destdir/node.pem respectively. These will be distributed throughout
485	the federated experiment. This routine reports errors via
486	service_errors.
487	'''
488	openssl = '/usr/bin/openssl'
489	# All the filenames and parameters we need for openssl calls below
490	ca_key =os.path.join(destdir, 'ca.key')
491	ca_pem = os.path.join(destdir, 'ca.pem')
492	node_key =os.path.join(destdir, 'node.key')
493	node_pem = os.path.join(destdir, 'node.pem')
494	node_req = os.path.join(destdir, 'node.req')
495	node_signed = os.path.join(destdir, 'node.signed')
496	days = '%s' % (365 * 10)
497	serial = '%s' % random.randint(0, 1<<16)
498
499	try:
500	# Sequence of calls to create a CA key, create a ca cert, create a
501	# node key, node signing request, and finally a signed node
502	# certificate.
503	sequence = (
504	(openssl, 'genrsa', '-out', ca_key, '1024'),
505	(openssl, 'req', '-new', '-x509', '-key', ca_key, '-out',
506	ca_pem, '-days', days, '-subj',
507	'/C=US/ST=CA/O=DETER/OU=fedd/CN=CA' ),
508	(openssl, 'genrsa', '-out', node_key, '1024'),
509	(openssl, 'req', '-new', '-key', node_key, '-out',
510	node_req, '-days', days, '-subj',
511	'/C=US/ST=CA/O=DETER/OU=fedd/CN=node' ),
512	(openssl, 'x509', '-CA', ca_pem, '-CAkey', ca_key,
513	'-set_serial', serial, '-req', '-in', node_req,
514	'-out', node_signed, '-days', days),
515	)
516	# Do all that stuff; bail if there's an error, and push all the
517	# output to dev/null.
518	for cmd in sequence:
519	trace = open("/dev/null", "w")
520	rv = call(cmd, stdout=trace, stderr=trace, close_fds=True)
521	if rv != 0:
522	raise service_error(service_error.internal,
523	"Cannot generate SEER certs. %s return code %d" \
524	% (' '.join(cmd), rv))
525	# Concatinate the node key and signed certificate into node.pem
526	f = open(node_pem, 'w')
527	for comp in (node_signed, node_key):
528	g = open(comp, 'r')
529	f.write(g.read())
530	g.close()
531	f.close()
532
533	# Throw out intermediaries.
534	for fn in (ca_key, node_key, node_req, node_signed):
535	os.unlink(fn)
536
537	except EnvironmentError, e:
538	# Any difficulties with the file system wind up here
539	raise service_error(service_error.internal,
540	"File error on %s while creating SEER certs: %s" % \
541	(e.filename, e.strerror))
542
543
544
545	def gentopo(self, str):
546	"""
547	Generate the topology data structure from the splitter's XML
548	representation of it.
549
550	The topology XML looks like:
551	<experiment>
552	<nodes>
553	<node><vname></vname><ips>ip1:ip2</ips></node>
554	</nodes>
555	<lans>
556	<lan>
557	<vname></vname><vnode></vnode><ip></ip>
558	<bandwidth></bandwidth><member>node:port</member>
559	</lan>
560	</lans>
561	"""
562	class topo_parse:
563	"""
564	Parse the topology XML and create the dats structure.
565	"""
566	def __init__(self):
567	# Typing of the subelements for data conversion
568	self.str_subelements = ('vname', 'vnode', 'ips', 'ip', 'member')
569	self.int_subelements = ( 'bandwidth',)
570	self.float_subelements = ( 'delay',)
571	# The final data structure
572	self.nodes = [ ]
573	self.lans = [ ]
574	self.topo = { \
575	'node': self.nodes,\
576	'lan' : self.lans,\
577	}
578	self.element = { } # Current element being created
579	self.chars = "" # Last text seen
580
581	def end_element(self, name):
582	# After each sub element the contents is added to the current
583	# element or to the appropriate list.
584	if name == 'node':
585	self.nodes.append(self.element)
586	self.element = { }
587	elif name == 'lan':
588	self.lans.append(self.element)
589	self.element = { }
590	elif name in self.str_subelements:
591	self.element[name] = self.chars
592	self.chars = ""
593	elif name in self.int_subelements:
594	self.element[name] = int(self.chars)
595	self.chars = ""
596	elif name in self.float_subelements:
597	self.element[name] = float(self.chars)
598	self.chars = ""
599
600	def found_chars(self, data):
601	self.chars += data.rstrip()
602
603
604	tp = topo_parse();
605	parser = xml.parsers.expat.ParserCreate()
606	parser.EndElementHandler = tp.end_element
607	parser.CharacterDataHandler = tp.found_chars
608
609	parser.Parse(str)
610
611	return tp.topo
612
613
614	def genviz(self, topo):
615	"""
616	Generate the visualization the virtual topology
617	"""
618
619	neato = "/usr/local/bin/neato"
620	# These are used to parse neato output and to create the visualization
621	# file.
622	vis_re = re.compile('^\s"?([\w\-]+)"?\s+\[.pos="([\d\.]+),([\d\.]+)"')
623	vis_fmt = "<node><name>%s</name><x>%s</x><y>%s</y><type>" + \
624	"%s</type></node>"
625
626	try:
627	# Node names
628	nodes = [ n['vname'] for n in topo['node'] ]
629	topo_lans = topo['lan']
630	except KeyError, e:
631	raise service_error(service_error.internal, "Bad topology: %s" %e)
632
633	lans = { }
634	links = { }
635
636	# Walk through the virtual topology, organizing the connections into
637	# 2-node connections (links) and more-than-2-node connections (lans).
638	# When a lan is created, it's added to the list of nodes (there's a
639	# node in the visualization for the lan).
640	for l in topo_lans:
641	if links.has_key(l['vname']):
642	if len(links[l['vname']]) < 2:
643	links[l['vname']].append(l['vnode'])
644	else:
645	nodes.append(l['vname'])
646	lans[l['vname']] = links[l['vname']]
647	del links[l['vname']]
648	lans[l['vname']].append(l['vnode'])
649	elif lans.has_key(l['vname']):
650	lans[l['vname']].append(l['vnode'])
651	else:
652	links[l['vname']] = [ l['vnode'] ]
653
654
655	# Open up a temporary file for dot to turn into a visualization
656	try:
657	df, dotname = tempfile.mkstemp()
658	dotfile = os.fdopen(df, 'w')
659	except EnvironmentError:
660	raise service_error(service_error.internal,
661	"Failed to open file in genviz")
662
663	try:
664	dnull = open('/dev/null', 'w')
665	except EnvironmentError:
666	service_error(service_error.internal,
667	"Failed to open /dev/null in genviz")
668
669	# Generate a dot/neato input file from the links, nodes and lans
670	try:
671	print >>dotfile, "graph G {"
672	for n in nodes:
673	print >>dotfile, '\t"%s"' % n
674	for l in links.keys():
675	print >>dotfile, '\t"%s" -- "%s"' % tuple(links[l])
676	for l in lans.keys():
677	for n in lans[l]:
678	print >>dotfile, '\t "%s" -- "%s"' % (n,l)
679	print >>dotfile, "}"
680	dotfile.close()
681	except TypeError:
682	raise service_error(service_error.internal,
683	"Single endpoint link in vtopo")
684	except EnvironmentError:
685	raise service_error(service_error.internal, "Cannot write dot file")
686
687	# Use dot to create a visualization
688	try:
689	dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005',
690	'-Gmaxiter=2000', '-Gpack=true', dotname], stdout=PIPE,
691	stderr=dnull, close_fds=True)
692	except EnvironmentError:
693	raise service_error(service_error.internal,
694	"Cannot generate visualization: is graphviz available?")
695	dnull.close()
696
697	# Translate dot to vis format
698	vis_nodes = [ ]
699	vis = { 'node': vis_nodes }
700	for line in dot.stdout:
701	m = vis_re.match(line)
702	if m:
703	vn = m.group(1)
704	vis_node = {'name': vn, \
705	'x': float(m.group(2)),\
706	'y' : float(m.group(3)),\
707	}
708	if vn in links.keys() or vn in lans.keys():
709	vis_node['type'] = 'lan'
710	else:
711	vis_node['type'] = 'node'
712	vis_nodes.append(vis_node)
713	rv = dot.wait()
714
715	os.remove(dotname)
716	# XXX: graphviz seems to use low return codes for warnings, like
717	# "couldn't find font"
718	if rv < 2 : return vis
719	else: return None
720
721
722	def release_access(self, tb, aid, tbmap=None, uri=None, cert_file=None,
723	cert_pwd=None):
724	"""
725	Release access to testbed through fedd
726	"""
727
728	if not uri and tbmap:
729	uri = tbmap.get(tb, None)
730	if not uri:
731	raise service_error(service_error.server_config,
732	"Unknown testbed: %s" % tb)
733
734	if self.local_access.has_key(uri):
735	resp = self.local_access[uri].ReleaseAccess(\
736	{ 'ReleaseAccessRequestBody' :
737	{'allocID': {'fedid': aid}},},
738	fedid(file=cert_file))
739	resp = { 'ReleaseAccessResponseBody': resp }
740	else:
741	resp = self.call_ReleaseAccess(uri, {'allocID': {'fedid': aid} },
742	cert_file, cert_pwd, self.trusted_certs)
743
744	# better error coding
745
746	def remote_ns2topdl(self, uri, desc):
747
748	req = {
749	'description' : { 'ns2description': desc },
750	}
751
752	r = self.call_Ns2Topdl(uri, req, self.cert_file, self.cert_pwd,
753	self.trusted_certs)
754
755	if r.has_key('Ns2TopdlResponseBody'):
756	r = r['Ns2TopdlResponseBody']
757	ed = r.get('experimentdescription', None)
758	if ed.has_key('topdldescription'):
759	return topdl.Topology(**ed['topdldescription'])
760	else:
761	raise service_error(service_error.protocol,
762	"Bad splitter response (no output)")
763	else:
764	raise service_error(service_error.protocol, "Bad splitter response")
765
766	class start_segment:
767	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
768	cert_pwd=None, trusted_certs=None, caller=None,
769	log_collector=None):
770	self.log = log
771	self.debug = debug
772	self.cert_file = cert_file
773	self.cert_pwd = cert_pwd
774	self.trusted_certs = None
775	self.caller = caller
776	self.testbed = testbed
777	self.log_collector = log_collector
778	self.response = None
779	self.node = { }
780	self.subs = { }
781	self.tb = { }
782	self.proof = None
783
784	def make_map(self, resp):
785	if 'segmentdescription' not in resp or \
786	'topdldescription' not in resp['segmentdescription']:
787	self.log.warn('No topology returned from startsegment')
788	return
789
790	top = topdl.Topology(
791	**resp['segmentdescription']['topdldescription'])
792
793	for e in top.elements:
794	if isinstance(e, topdl.Computer):
795	self.node[e.name] = e
796	elif isinstance(e, topdl.Testbed):
797	self.tb[e.uri] = e
798	for s in top.substrates:
799	self.subs[s.name] = s
800
801	def __call__(self, uri, aid, topo, masters, attrs=None, connInfo=None):
802	req = {
803	'allocID': { 'fedid' : aid },
804	'segmentdescription': {
805	'topdldescription': topo.to_dict(),
806	},
807	}
808
809	if connInfo:
810	req['connection'] = connInfo
811
812	import_svcs = [ s for m in masters.values() \
813	for s in m if self.testbed in s.importers]
814
815	if import_svcs or self.testbed in masters:
816	req['service'] = []
817
818	for s in import_svcs:
819	for r in s.reqs:
820	sr = copy.deepcopy(r)
821	sr['visibility'] = 'import';
822	req['service'].append(sr)
823
824	for s in masters.get(self.testbed, []):
825	for r in s.reqs:
826	sr = copy.deepcopy(r)
827	sr['visibility'] = 'export';
828	req['service'].append(sr)
829
830	if attrs:
831	req['fedAttr'] = attrs
832
833	try:
834	self.log.debug("Calling StartSegment at %s " % uri)
835	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
836	self.trusted_certs)
837	if r.has_key('StartSegmentResponseBody'):
838	lval = r['StartSegmentResponseBody'].get('allocationLog',
839	None)
840	if lval and self.log_collector:
841	for line in lval.splitlines(True):
842	self.log_collector.write(line)
843	self.make_map(r['StartSegmentResponseBody'])
844	if 'proof' in r: self.proof = r['proof']
845	self.response = r
846	else:
847	raise service_error(service_error.internal,
848	"Bad response!?: %s" %r)
849	return True
850	except service_error, e:
851	self.log.error("Start segment failed on %s: %s" % \
852	(self.testbed, e))
853	return False
854
855
856
857	class terminate_segment:
858	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
859	cert_pwd=None, trusted_certs=None, caller=None):
860	self.log = log
861	self.debug = debug
862	self.cert_file = cert_file
863	self.cert_pwd = cert_pwd
864	self.trusted_certs = None
865	self.caller = caller
866	self.testbed = testbed
867
868	def __call__(self, uri, aid ):
869	req = {
870	'allocID': {'fedid': aid },
871	}
872	self.log.info("Calling terminate segment")
873	try:
874	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
875	self.trusted_certs)
876	self.log.info("Terminate segment succeeded")
877	return True
878	except service_error, e:
879	self.log.error("Terminate segment failed on %s: %s" % \
880	(self.testbed, e))
881	return False
882
883	class info_segment(start_segment):
884	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
885	cert_pwd=None, trusted_certs=None, caller=None,
886	log_collector=None):
887	experiment_control_local.start_segment.__init__(self, debug,
888	log, testbed, cert_file, cert_pwd, trusted_certs,
889	caller, log_collector)
890
891	def __call__(self, uri, aid):
892	req = { 'allocID': { 'fedid' : aid } }
893
894	try:
895	self.log.debug("Calling InfoSegment at %s " % uri)
896	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
897	self.trusted_certs)
898	if r.has_key('InfoSegmentResponseBody'):
899	self.make_map(r['InfoSegmentResponseBody'])
900	if 'proof' in r: self.proof = r['proof']
901	self.response = r
902	else:
903	raise service_error(service_error.internal,
904	"Bad response!?: %s" %r)
905	return True
906	except service_error, e:
907	self.log.error("Info segment failed on %s: %s" % \
908	(self.testbed, e))
909	return False
910
911	class operation_segment:
912	def __init__(self, debug=False, log=None, testbed="", cert_file=None,
913	cert_pwd=None, trusted_certs=None, caller=None,
914	log_collector=None):
915	self.log = log
916	self.debug = debug
917	self.cert_file = cert_file
918	self.cert_pwd = cert_pwd
919	self.trusted_certs = None
920	self.caller = caller
921	self.testbed = testbed
922	self.status = None
923
924	def __call__(self, uri, aid, op, targets, params):
925	req = {
926	'allocID': { 'fedid' : aid },
927	'operation': op,
928	'target': targets,
929	}
930	if params: req['parameter'] = params
931
932
933	try:
934	self.log.debug("Calling OperationSegment at %s " % uri)
935	r = self.caller(uri, req, self.cert_file, self.cert_pwd,
936	self.trusted_certs)
937	if 'OperationSegmentResponseBody' in r:
938	r = r['OperationSegmentResponseBody']
939	if 'status' in r:
940	self.status = r['status']
941	else:
942	raise service_error(service_error.internal,
943	"Bad response!?: %s" %r)
944	return True
945	except service_error, e:
946	self.log.error("Operation segment failed on %s: %s" % \
947	(self.testbed, e))
948	return False
949
950	def annotate_topology(self, top, data):
951	# These routines do various parts of the annotation
952	def add_new_names(nl, l):
953	""" add any names in nl to the list in l """
954	for n in nl:
955	if n not in l: l.append(n)
956
957	def merge_services(ne, e):
958	for ns in ne.service:
959	# NB: the else is on the for
960	for s in e.service:
961	if ns.name == s.name:
962	s.importer = ns.importer
963	s.param = ns.param
964	s.description = ns.description
965	s.status = ns.status
966	break
967	else:
968	e.service.append(ns)
969
970	def merge_oses(ne, e):
971	"""
972	Merge the operating system entries of ne into e
973	"""
974	for nos in ne.os:
975	# NB: the else is on the for
976	for os in e.os:
977	if nos.name == os.name:
978	os.version = nos.version
979	os.version = nos.distribution
980	os.version = nos.distributionversion
981	for a in nos.attribute:
982	if os.get_attribute(a.attribute):
983	os.remove_attribute(a.attribute)
984	os.set_attribute(a.attribute, a.value)
985	break
986	else:
987	# If both nodes have one OS, this is a replacement
988	if len(ne.os) == 1 and len(e.os) == 1: e.os = ne.os
989	else: e.os.append(nos)
990
991	# Annotate the topology with embedding info
992	for e in top.elements:
993	if isinstance(e, topdl.Computer):
994	for s in data:
995	ne = s.node.get(e.name, None)
996	if ne is not None:
997	add_new_names(ne.localname, e.localname)
998	e.status = ne.status
999	merge_services(ne, e)
1000	add_new_names(ne.operation, e.operation)
1001	if ne.os: merge_oses(ne, e)
1002	break
1003	elif isinstance(e,topdl.Testbed):
1004	for s in data:
1005	ne = s.tb.get(e.uri, None)
1006	if ne is not None:
1007	add_new_names(ne.localname, e.localname)
1008	add_new_names(ne.operation, e.operation)
1009	merge_services(ne, e)
1010	for a in ne.attribute:
1011	e.set_attribute(a.attribute, a.value)
1012	# Annotate substrates
1013	for s in top.substrates:
1014	for d in data:
1015	ss = d.subs.get(s.name, None)
1016	if ss is not None:
1017	if ss.capacity is not None:
1018	s.capacity = ss.capacity
1019	if s.latency is not None:
1020	s.latency = ss.latency
1021
1022
1023
1024	def allocate_resources(self, allocated, masters, eid, expid,
1025	tbparams, top, topo, tmpdir, alloc_log=None, log_collector=None,
1026	attrs=None, connInfo={}, tbmap=None, expcert=None):
1027
1028	started = { } # Testbeds where a sub-experiment started
1029	# successfully
1030
1031	# XXX
1032	fail_soft = False
1033
1034	if tbmap is None: tbmap = { }
1035
1036	log = alloc_log or self.log
1037
1038	tp = thread_pool(self.nthreads)
1039	threads = [ ]
1040	starters = [ ]
1041
1042	if expcert:
1043	cert = expcert
1044	pw = None
1045	else:
1046	cert = self.cert_file
1047	pw = self.cert_pwd
1048
1049	for tb in allocated.keys():
1050	# Create and start a thread to start the segment, and save it
1051	# to get the return value later
1052	tb_attrs = copy.copy(attrs)
1053	tp.wait_for_slot()
1054	uri = tbparams[tb].uri or tbmap.get(testbed_base(tb), None)
1055	base, suffix = split_testbed(tb)
1056	if suffix:
1057	tb_attrs.append({'attribute': 'experiment_name',
1058	'value': "%s-%s" % (eid, suffix)})
1059	else:
1060	tb_attrs.append({'attribute': 'experiment_name', 'value': eid})
1061	if not uri:
1062	raise service_error(service_error.internal,
1063	"Unknown testbed %s !?" % tb)
1064
1065	aid = tbparams[tb].allocID
1066	if not aid:
1067	raise service_error(service_error.internal,
1068	"No alloc id for testbed %s !?" % tb)
1069
1070	s = self.start_segment(log=log, debug=self.debug,
1071	testbed=tb, cert_file=cert,
1072	cert_pwd=pw, trusted_certs=self.trusted_certs,
1073	caller=self.call_StartSegment,
1074	log_collector=log_collector)
1075	starters.append(s)
1076	t = pooled_thread(\
1077	target=s, name=tb,
1078	args=(uri, aid, topo[tb], masters, tb_attrs, connInfo[tb]),
1079	pdata=tp, trace_file=self.trace_file)
1080	threads.append(t)
1081	t.start()
1082
1083	# Wait until all finish (keep pinging the log, though)
1084	mins = 0
1085	revoked = False
1086	while not tp.wait_for_all_done(60.0):
1087	mins += 1
1088	alloc_log.info("Waiting for sub threads (it has been %d mins)" \
1089	% mins)
1090	if not revoked and \
1091	len([ t.getName() for t in threads if t.rv == False]) > 0:
1092	# a testbed has failed. Revoke this experiment's
1093	# synchronizarion values so that sub experiments will not
1094	# deadlock waiting for synchronization that will never happen
1095	self.log.info("A subexperiment has failed to swap in, " + \
1096	"revoking synch keys")
1097	var_key = "fedid:%s" % expid
1098	for k in self.synch_store.all_keys():
1099	if len(k) > 45 and k[0:46] == var_key:
1100	self.synch_store.revoke_key(k)
1101	revoked = True
1102
1103	failed = [ t.getName() for t in threads if not t.rv ]
1104	succeeded = [tb for tb in allocated.keys() if tb not in failed]
1105
1106	# If one failed clean up, unless fail_soft is set
1107	if failed:
1108	if not fail_soft:
1109	tp.clear()
1110	for tb in succeeded:
1111	# Create and start a thread to stop the segment
1112	tp.wait_for_slot()
1113	uri = tbparams[tb].uri
1114	t = pooled_thread(\
1115	target=self.terminate_segment(log=log,
1116	testbed=tb,
1117	cert_file=cert,
1118	cert_pwd=pw,
1119	trusted_certs=self.trusted_certs,
1120	caller=self.call_TerminateSegment),
1121	args=(uri, tbparams[tb].allocID),
1122	name=tb,
1123	pdata=tp, trace_file=self.trace_file)
1124	t.start()
1125	# Wait until all finish (if any are being stopped)
1126	if succeeded:
1127	tp.wait_for_all_done()
1128
1129	# release the allocations
1130	for tb in tbparams.keys():
1131	try:
1132	self.release_access(tb, tbparams[tb].allocID,
1133	tbmap=tbmap, uri=tbparams[tb].uri,
1134	cert_file=cert, cert_pwd=pw)
1135	except service_error, e:
1136	self.log.warn("Error releasing access: %s" % e.desc)
1137	# Remove the placeholder
1138	self.state_lock.acquire()
1139	self.state[eid].status = 'failed'
1140	self.state[eid].updated()
1141	if self.state_filename: self.write_state()
1142	self.state_lock.release()
1143	# Remove the repo dir
1144	self.remove_dirs("%s/%s" %(self.repodir, expid))
1145	# Walk up tmpdir, deleting as we go
1146	if self.cleanup:
1147	self.remove_dirs(tmpdir)
1148	else:
1149	log.debug("[start_experiment]: not removing %s" % tmpdir)
1150
1151
1152	log.error("Swap in failed on %s" % ",".join(failed))
1153	return
1154	else:
1155	# Walk through the successes and gather the proofs
1156	proofs = { }
1157	for s in starters:
1158	if s.proof:
1159	proofs[s.testbed] = s.proof
1160	self.annotate_topology(top, starters)
1161	log.info("[start_segment]: Experiment %s active" % eid)
1162
1163
1164	# Walk up tmpdir, deleting as we go
1165	if self.cleanup:
1166	self.remove_dirs(tmpdir)
1167	else:
1168	log.debug("[start_experiment]: not removing %s" % tmpdir)
1169
1170	# Insert the experiment into our state and update the disk copy.
1171	self.state_lock.acquire()
1172	self.state[expid].status = 'active'
1173	self.state[eid] = self.state[expid]
1174	self.state[eid].top = top
1175	self.state[eid].updated()
1176	# Append startup proofs
1177	for f in self.state[eid].get_all_allocations():
1178	if f.tb in proofs:
1179	f.proof.append(proofs[f.tb])
1180
1181	if self.state_filename: self.write_state()
1182	self.state_lock.release()
1183	return
1184
1185
1186	def add_kit(self, e, kit):
1187	"""
1188	Add a Software object created from the list of (install, location)
1189	tuples passed as kit to the software attribute of an object e. We
1190	do this enough to break out the code, but it's kind of a hack to
1191	avoid changing the old tuple rep.
1192	"""
1193
1194	s = [ topdl.Software(install=i, location=l) for i, l in kit]
1195
1196	if isinstance(e.software, list): e.software.extend(s)
1197	else: e.software = s
1198
1199	def append_experiment_authorization(self, expid, attrs,
1200	need_state_lock=True):
1201	"""
1202	Append the authorization information to system state
1203	"""
1204
1205	for p, a in attrs:
1206	# PNNL Debug
1207	self.log.debug("Append auth: %s %s" % (p, a))
1208	if p and a:
1209	# Improperly configured overrides can add bad principals.
1210	self.auth.set_attribute(p, a)
1211	else:
1212	self.log.debug("Bad append experiment_authorization %s %s" \
1213	% (p, a))
1214	self.auth.save()
1215
1216	if need_state_lock: self.state_lock.acquire()
1217	# XXX: really a no op?
1218	#self.state[expid]['auth'].update(attrs)
1219	if self.state_filename: self.write_state()
1220	if need_state_lock: self.state_lock.release()
1221
1222	def clear_experiment_authorization(self, expid, need_state_lock=True):
1223	"""
1224	Attrs is a set of attribute principal pairs that need to be removed
1225	from the authenticator. Remove them and save the authenticator.
1226	"""
1227
1228	if need_state_lock: self.state_lock.acquire()
1229	# XXX: should be a no-op
1230	#if expid in self.state and 'auth' in self.state[expid]:
1231	#for p, a in self.state[expid]['auth']:
1232	#self.auth.unset_attribute(p, a)
1233	#self.state[expid]['auth'] = set()
1234	if self.state_filename: self.write_state()
1235	if need_state_lock: self.state_lock.release()
1236	self.auth.save()
1237
1238
1239	def create_experiment_state(self, fid, req, expid, expcert,
1240	state='starting'):
1241	"""
1242	Create the initial entry in the experiment's state. The expid and
1243	expcert are the experiment's fedid and certifacte that represents that
1244	ID, which are installed in the experiment state. If the request
1245	includes a suggested local name that is used if possible. If the local
1246	name is already taken by an experiment owned by this user that has
1247	failed, it is overwritten. Otherwise new letters are added until a
1248	valid localname is found. The generated local name is returned.
1249	"""
1250
1251	if req.has_key('experimentID') and \
1252	req['experimentID'].has_key('localname'):
1253	overwrite = False
1254	eid = req['experimentID']['localname']
1255	# If there's an old failed experiment here with the same local name
1256	# and accessible by this user, we'll overwrite it, otherwise we'll
1257	# fall through and do the collision avoidance.
1258	old_expid = self.get_experiment_fedid(eid)
1259	if old_expid:
1260	users_experiment = True
1261	try:
1262	self.check_experiment_access(fid, old_expid)
1263	except service_error, e:
1264	if e.code == service_error.access: users_experiment = False
1265	else: raise e
1266	if users_experiment:
1267	self.state_lock.acquire()
1268	status = self.state[eid].status
1269	if status and status == 'failed':
1270	# remove the old access attributes
1271	self.clear_experiment_authorization(eid,
1272	need_state_lock=False)
1273	overwrite = True
1274	del self.state[eid]
1275	del self.state[old_expid]
1276	self.state_lock.release()
1277	else:
1278	self.log.info('Experiment %s exists, ' % eid + \
1279	'but this user cannot access it')
1280	self.state_lock.acquire()
1281	while (self.state.has_key(eid) and not overwrite):
1282	eid += random.choice(string.ascii_letters)
1283	# Initial state
1284	self.state[eid] = experiment_info(fedid=expid, localname=eid,
1285	identity=expcert)
1286	self.state[expid] = self.state[eid]
1287	if self.state_filename: self.write_state()
1288	self.state_lock.release()
1289	else:
1290	eid = self.exp_stem
1291	for i in range(0,5):
1292	eid += random.choice(string.ascii_letters)
1293	self.state_lock.acquire()
1294	while (self.state.has_key(eid)):
1295	eid = self.exp_stem
1296	for i in range(0,5):
1297	eid += random.choice(string.ascii_letters)
1298	# Initial state
1299	self.state[eid] = experiment_info(fedid=expid, localname=eid,
1300	identity=expcert)
1301	self.state[expid] = self.state[eid]
1302	if self.state_filename: self.write_state()
1303	self.state_lock.release()
1304
1305	# Let users touch the state. Authorize this fid and the expid itself
1306	# to touch the experiment, as well as allowing th eoverrides.
1307	self.append_experiment_authorization(eid,
1308	set([(fid, expid), (expid,expid)] + \
1309	[ (o, expid) for o in self.overrides]))
1310
1311	return eid
1312
1313
1314	def allocate_ips_to_topo(self, top):
1315	"""
1316	Add an ip4_address attribute to all the hosts in the topology that have
1317	not already been assigned one by the user, based on the shared
1318	substrates on which they sit. An /etc/hosts file is also created and
1319	returned as a list of hostfiles entries. We also return the allocator,
1320	because we may need to allocate IPs to portals
1321	(specifically DRAGON portals).
1322	"""
1323	subs = sorted(top.substrates,
1324	cmp=lambda x,y: cmp(len(x.interfaces), len(y.interfaces)),
1325	reverse=True)
1326	ips = ip_allocator(int(ip_addr("10.0.0.0")), 2 **24)
1327	ifs = { }
1328	hosts = [ ]
1329
1330	assigned = { }
1331	assigned_subs = set()
1332	# Look for IP networks that were already assigned to the experiment by
1333	# the user. We assume that users are smart in making that assignment,
1334	# but we check them later.
1335	for e in top.elements:
1336	if not isinstance(e, topdl.Computer): continue
1337	for inf in e.interface:
1338	a = inf.get_attribute('ip4_address')
1339	if not a: continue
1340	for s in inf.substrate:
1341	assigned_subs.add(s)
1342	a = ip_addr(a)
1343	n = ip_addr(inf.get_attribute('ip4_netmask'))
1344
1345	sz = 0x100000000 - long(n)
1346	net = (long(a) & long(n)) & 0xffffffff
1347	if net in assigned:
1348	if sz > assigned[net]: assigned[net] = sz
1349	assigned[net] = sz
1350
1351	# XXX: hack attack - always avoid 10.0.23.0 which is special on DETER
1352	assigned[long(ip_addr('10.0.23.0'))] = 256
1353	# end of hack
1354
1355	# Walk all substrates, smallest to largest, assigning IP addresses to
1356	# the unassigned and checking the assigned. Build an /etc/hosts file
1357	# as well.
1358	for idx, s in enumerate(subs):
1359	if s.name not in assigned_subs:
1360	net_size = len(s.interfaces)+2
1361
1362	# Get an ip allocation for this substrate. Make sure the
1363	# allocation does not collide with any user allocations.
1364	ok = False
1365	while not ok:
1366	a = ips.allocate(net_size)
1367	if not a:
1368	raise service_error(service_error.req,
1369	"Cannot allocate IP addresses")
1370	base, num = a
1371	if num < net_size:
1372	raise service_error(service_error.internal,
1373	"Allocator returned wrong number of IPs??")
1374	# Check for overlap. An assigned network could contain an
1375	# endpoint of the new allocation or the new allocation
1376	# could contain an endpoint of an assigned network.
1377	# NB the else is attached to the for - if the loop is not
1378	# exited by a break, ok = True.
1379	for n, sz in assigned.items():
1380	if base >= n and base < n + sz:
1381	ok = False
1382	break
1383	if base + num > n and base + num < n + sz:
1384	ok = False
1385	break
1386	if n >= base and n < base + num:
1387	ok = False
1388	break
1389	if n+sz > base and n+sz < base + num:
1390	ok = False
1391	break
1392	else:
1393	ok = True
1394
1395	mask = ips.min_alloc
1396	while mask < net_size:
1397	mask *= 2
1398
1399	netmask = ((2**32-1) ^ (mask-1))
1400	else:
1401	base = 0
1402
1403	# Add the attributes and build hosts
1404	base += 1
1405	for i in s.interfaces:
1406	# Add address and masks to interfaces on unassigned substrates
1407	if s.name not in assigned_subs:
1408	i.attribute.append(
1409	topdl.Attribute('ip4_address',
1410	"%s" % ip_addr(base)))
1411	i.attribute.append(
1412	topdl.Attribute('ip4_netmask',
1413	"%s" % ip_addr(int(netmask))))
1414
1415	# Make /etc/hosts entries
1416	addr = i.get_attribute('ip4_address')
1417	if addr is None:
1418	raise service_error(service_error.req,
1419	"Partially assigned substrate %s" %s.name)
1420	hname = i.element.name
1421	if hname in ifs:
1422	hosts.append("%s\t%s-%s %s-%d" % \
1423	(addr, hname, s.name, hname, ifs[hname]))
1424	else:
1425	# First IP allocated it the default ip according to hosts,
1426	# so the extra alias is here.
1427	ifs[hname] = 0
1428	hosts.append("%s\t%s-%s %s-%d %s" % \
1429	(addr, hname, s.name, hname, ifs[hname], hname))
1430
1431	ifs[hname] += 1
1432	base += 1
1433	return hosts, ips
1434
1435	def get_access_to_testbeds(self, testbeds, fid, allocated,
1436	tbparam, masters, tbmap, expid=None, expcert=None):
1437	for tb in testbeds:
1438	self.get_access(tb, tbparam, fid, masters, tbmap, expid,
1439	expcert)
1440	allocated[tb] = 1
1441
1442	def get_access(self, tb, tbparam,fid, masters, tbmap, expid=None,
1443	expcert=None):
1444	"""
1445	Get access to testbed through fedd and set the parameters for that tb
1446	"""
1447	def get_export_project(svcs):
1448	"""
1449	Look through for the list of federated_service for this testbed
1450	objects for a project_export service, and extract the project
1451	parameter.
1452	"""
1453
1454	pe = [s for s in svcs if s.name=='project_export']
1455	if len(pe) == 1:
1456	return pe[0].params.get('project', None)
1457	elif len(pe) == 0:
1458	return None
1459	else:
1460	raise service_error(service_error.req,
1461	"More than one project export is not supported")
1462
1463	def add_services(svcs, type, slist, keys):
1464	"""
1465	Add the given services to slist. type is import or export. Also
1466	add a mapping entry from the assigned id to the original service
1467	record.
1468	"""
1469	for i, s in enumerate(svcs):
1470	idx = '%s%d' % (type, i)
1471	keys[idx] = s
1472	sr = {'id': idx, 'name': s.name, 'visibility': type }
1473	if s.params:
1474	sr['fedAttr'] = [ { 'attribute': k, 'value': v } \
1475	for k, v in s.params.items()]
1476	slist.append(sr)
1477
1478	uri = tbmap.get(testbed_base(tb), None)
1479	if not uri:
1480	raise service_error(service_error.server_config,
1481	"Unknown testbed: %s" % tb)
1482
1483	export_svcs = masters.get(tb,[])
1484	import_svcs = [ s for m in masters.values() \
1485	for s in m \
1486	if tb in s.importers ]
1487
1488	export_project = get_export_project(export_svcs)
1489	# Compose the credential list so that IDs come before attributes
1490	creds = set()
1491	keys = set()
1492	certs = self.auth.get_creds_for_principal(fid)
1493	# Append credenials about this experiment controller - e.g. that it is
1494	# trusted.
1495	certs.update(self.auth.get_creds_for_principal(
1496	fedid(file=self.cert_file)))
1497	if expid:
1498	certs.update(self.auth.get_creds_for_principal(expid))
1499	for c in certs:
1500	keys.add(c.issuer_cert())
1501	creds.add(c.attribute_cert())
1502	creds = list(keys) + list(creds)
1503
1504	if expcert: cert, pw = expcert, None
1505	else: cert, pw = self.cert_file, self.cert_pw
1506
1507	# Request credentials
1508	req = {
1509	'abac_credential': creds,
1510	}
1511	# Make the service request from the services we're importing and
1512	# exporting. Keep track of the export request ids so we can
1513	# collect the resulting info from the access response.
1514	e_keys = { }
1515	if import_svcs or export_svcs:
1516	slist = []
1517	add_services(import_svcs, 'import', slist, e_keys)
1518	add_services(export_svcs, 'export', slist, e_keys)
1519	req['service'] = slist
1520
1521	if self.local_access.has_key(uri):
1522	# Local access call
1523	req = { 'RequestAccessRequestBody' : req }
1524	r = self.local_access[uri].RequestAccess(req,
1525	fedid(file=self.cert_file))
1526	r = { 'RequestAccessResponseBody' : r }
1527	else:
1528	r = self.call_RequestAccess(uri, req, cert, pw, self.trusted_certs)
1529
1530	if r.has_key('RequestAccessResponseBody'):
1531	# Through to here we have a valid response, not a fault.
1532	# Access denied is a fault, so something better or worse than
1533	# access denied has happened.
1534	r = r['RequestAccessResponseBody']
1535	self.log.debug("[get_access] Access granted")
1536	else:
1537	raise service_error(service_error.protocol,
1538	"Bad proxy response")
1539	if 'proof' not in r:
1540	raise service_error(service_error.protocol,
1541	"Bad access response (no access proof)")
1542
1543	tbparam[tb] = allocation_info(allocID=r['allocID'].get('fedid', None),
1544	tb=tb, uri=uri, proof=[r['proof']],
1545	services=masters.get(tb, None))
1546
1547	# Collect the responses corresponding to the services this testbed
1548	# exports. These will be the service requests that we will include in
1549	# the start segment requests (with appropriate visibility values) to
1550	# import and export the segments.
1551	for s in r.get('service', []):
1552	id = s.get('id', None)
1553	# Note that this attaches the response to the object in the masters
1554	# data structure. (The e_keys index disappears when this fcn
1555	# returns)
1556	if id and id in e_keys:
1557	e_keys[id].reqs.append(s)
1558
1559	# Add attributes to parameter space. We don't allow attributes to
1560	# overlay any parameters already installed.
1561	for a in r.get('fedAttr', []):
1562	try:
1563	if a['attribute']:
1564	tbparam[tb].set_attribute(a['attribute'], a['value'])
1565	except KeyError:
1566	self.log.error("Bad attribute in response: %s" % a)
1567
1568
1569	def split_topology(self, top, topo, testbeds):
1570	"""
1571	Create the sub-topologies that are needed for experiment instantiation.
1572	"""
1573	for tb in testbeds:
1574	topo[tb] = top.clone()
1575	# copy in for loop allows deletions from the original
1576	for e in [ e for e in topo[tb].elements]:
1577	etb = e.get_attribute('testbed')
1578	# NB: elements without a testbed attribute won't appear in any
1579	# sub topologies.
1580	if not etb or etb != tb:
1581	for i in e.interface:
1582	for s in i.subs:
1583	try:
1584	s.interfaces.remove(i)
1585	except ValueError:
1586	raise service_error(service_error.internal,
1587	"Can't remove interface??")
1588	topo[tb].elements.remove(e)
1589	topo[tb].make_indices()
1590
1591	def confirm_software(self, top):
1592	"""
1593	Make sure that the software to be loaded in the topo is all available
1594	before we begin making access requests, etc. This is a subset of
1595	wrangle_software.
1596	"""
1597	pkgs = set([ d for i, d in self.fedkit + self.gatewaykit ])
1598	pkgs.update([x.location for e in top.elements for x in e.software])
1599
1600	for pkg in pkgs:
1601	loc = pkg
1602
1603	scheme, host, path = urlparse(loc)[0:3]
1604	dest = os.path.basename(path)
1605	if not scheme:
1606	if not loc.startswith('/'):
1607	loc = "/%s" % loc
1608	loc = "file://%s" %loc
1609	# NB: if scheme was found, loc == pkg
1610	try:
1611	u = urlopen(loc)
1612	u.close()
1613	except Exception, e:
1614	raise service_error(service_error.req,
1615	"Cannot open %s: %s" % (loc, e))
1616	return True
1617
1618	def wrangle_software(self, expid, top, topo, tbparams):
1619	"""
1620	Copy software out to the repository directory, allocate permissions and
1621	rewrite the segment topologies to look for the software in local
1622	places.
1623	"""
1624
1625	# XXX: PNNL debug
1626	self.log.debug("calling wrangle software")
1627	# Copy the rpms and tarfiles to a distribution directory from
1628	# which the federants can retrieve them
1629	linkpath = "%s/software" % expid
1630	softdir ="%s/%s" % ( self.repodir, linkpath)
1631	softmap = { }
1632
1633	# self.fedkit and self.gateway kit are lists of tuples of
1634	# (install_location, download_location) this extracts the download
1635	# locations.
1636	pkgs = set([ d for i, d in self.fedkit + self.gatewaykit ])
1637	pkgs.update([x.location for e in top.elements for x in e.software])
1638	try:
1639	# XXX: PNNL debug
1640	self.log.debug("wrangle software: makedirs")
1641	os.makedirs(softdir)
1642	# XXX: PNNL debug
1643	self.log.debug("wrangle software: makedirs success")
1644	except EnvironmentError, e:
1645	raise service_error(
1646	"Cannot create software directory: %s" % e)
1647	# The actual copying. Everything's converted into a url for copying.
1648	auth_attrs = set()
1649	for pkg in pkgs:
1650	loc = pkg
1651
1652	scheme, host, path = urlparse(loc)[0:3]
1653	dest = os.path.basename(path)
1654	if not scheme:
1655	if not loc.startswith('/'):
1656	loc = "/%s" % loc
1657	loc = "file://%s" %loc
1658	# NB: if scheme was found, loc == pkg
1659	try:
1660	u = urlopen(loc)
1661	except Exception, e:
1662	raise service_error(service_error.req,
1663	"Cannot open %s: %s" % (loc, e))
1664	try:
1665	f = open("%s/%s" % (softdir, dest) , "w")
1666	self.log.debug("Writing %s/%s" % (softdir,dest) )
1667	data = u.read(4096)
1668	while data:
1669	f.write(data)
1670	data = u.read(4096)
1671	f.close()
1672	u.close()
1673	except Exception, e:
1674	raise service_error(service_error.internal,
1675	"Could not copy %s: %s" % (loc, e))
1676	path = re.sub("/tmp", "", linkpath)
1677	# XXX
1678	softmap[pkg] = \
1679	"%s/%s/%s" %\
1680	( self.repo_url, path, dest)
1681
1682	# Allow the individual segments to access the software by assigning
1683	# an attribute to each testbed allocation that encodes the data to
1684	# be released. This expression collects the data for each run of
1685	# the loop.
1686	auth_attrs.update([
1687	(tbparams[tb].allocID, "/%s/%s" % ( path, dest)) \
1688	for tb in tbparams.keys()])
1689
1690	self.append_experiment_authorization(expid, auth_attrs)
1691
1692	# Convert the software locations in the segments into the local
1693	# copies on this host
1694	for soft in [ s for tb in topo.values() \
1695	for e in tb.elements \
1696	if getattr(e, 'software', False) \
1697	for s in e.software ]:
1698	if softmap.has_key(soft.location):
1699	soft.location = softmap[soft.location]
1700
1701
1702	def new_experiment(self, req, fid):
1703	"""
1704	The external interface to empty initial experiment creation called from
1705	the dispatcher.
1706
1707	Creates a working directory, splits the incoming description using the
1708	splitter script and parses out the avrious subsections using the
1709	lcasses above. Once each sub-experiment is created, use pooled threads
1710	to instantiate them and start it all up.
1711	"""
1712	self.log.info("New experiment call started for %s" % fid)
1713	req = req.get('NewRequestBody', None)
1714	if not req:
1715	raise service_error(service_error.req,
1716	"Bad request format (no NewRequestBody)")
1717
1718	# import may partially succeed so always save credentials and warn
1719	if not self.auth.import_credentials(data_list=req.get('credential', [])):
1720	self.log.debug("Failed to import delegation credentials(!)")
1721	self.get_grouper_updates(fid)
1722	self.auth.update()
1723	self.auth.save()
1724
1725	try:
1726	access_ok, proof = self.auth.check_attribute(fid, 'new',
1727	with_proof=True)
1728	except service_error, e:
1729	self.log.info("New experiment call for %s: access denied" % fid)
1730	raise e
1731
1732
1733	if not access_ok:
1734	self.log.info("New experiment call for %s: Access denied" % fid)
1735	raise service_error(service_error.access, "New access denied",
1736	proof=[proof])
1737
1738	try:
1739	tmpdir = tempfile.mkdtemp(prefix="split-")
1740	except EnvironmentError:
1741	raise service_error(service_error.internal, "Cannot create tmp dir")
1742
1743	# Generate an ID for the experiment (slice) and a certificate that the
1744	# allocator can use to prove they own it. We'll ship it back through
1745	# the encrypted connection. If the requester supplied one, use it.
1746	if 'experimentAccess' in req and 'X509' in req['experimentAccess']:
1747	expcert = req['experimentAccess']['X509']
1748	expid = fedid(certstr=expcert)
1749	self.state_lock.acquire()
1750	if expid in self.state:
1751	self.state_lock.release()
1752	raise service_error(service_error.req,
1753	'fedid %s identifies an existing experiment' % expid)
1754	self.state_lock.release()
1755	else:
1756	(expid, expcert) = generate_fedid("test", dir=tmpdir, log=self.log)
1757
1758	#now we're done with the tmpdir, and it should be empty
1759	if self.cleanup:
1760	self.log.debug("[new_experiment]: removing %s" % tmpdir)
1761	os.rmdir(tmpdir)
1762	else:
1763	self.log.debug("[new_experiment]: not removing %s" % tmpdir)
1764
1765	eid = self.create_experiment_state(fid, req, expid, expcert,
1766	state='empty')
1767
1768	rv = {
1769	'experimentID': [
1770	{'localname' : eid }, { 'fedid': copy.copy(expid) }
1771	],
1772	'experimentStatus': 'empty',
1773	'experimentAccess': { 'X509' : expcert },
1774	'proof': proof.to_dict(),
1775	}
1776
1777	self.log.info("New experiment call succeeded for %s" % fid)
1778	return rv
1779
1780	# create_experiment sub-functions
1781
1782	@staticmethod
1783	def get_experiment_key(req, field='experimentID'):
1784	"""
1785	Parse the experiment identifiers out of the request (the request body
1786	tag has been removed). Specifically this pulls either the fedid or the
1787	localname out of the experimentID field. A fedid is preferred. If
1788	neither is present or the request does not contain the fields,
1789	service_errors are raised.
1790	"""
1791	# Get the experiment access
1792	exp = req.get(field, None)
1793	if exp:
1794	if exp.has_key('fedid'):
1795	key = exp['fedid']
1796	elif exp.has_key('localname'):
1797	key = exp['localname']
1798	else:
1799	raise service_error(service_error.req, "Unknown lookup type")
1800	else:
1801	raise service_error(service_error.req, "No request?")
1802
1803	return key
1804
1805	def get_experiment_ids_and_start(self, key, tmpdir):
1806	"""
1807	Get the experiment name, id and access certificate from the state, and
1808	set the experiment state to 'starting'. returns a triple (fedid,
1809	localname, access_cert_file). The access_cert_file is a copy of the
1810	contents of the access certificate, created in the tempdir with
1811	restricted permissions. If things are confused, raise an exception.
1812	"""
1813
1814	expid = eid = None
1815	self.state_lock.acquire()
1816	if key in self.state:
1817	exp = self.state[key]
1818	exp.status = "starting"
1819	exp.updated()
1820	expid = exp.fedid
1821	eid = exp.localname
1822	expcert = exp.identity
1823	self.state_lock.release()
1824
1825	# make a protected copy of the access certificate so the experiment
1826	# controller can act as the experiment principal.
1827	if expcert:
1828	expcert_file = self.make_temp_certfile(expcert, tmpdir)
1829	if not expcert_file:
1830	raise service_error(service_error.internal,
1831	"Cannot create temp cert file?")
1832	else:
1833	expcert_file = None
1834
1835	return (eid, expid, expcert_file)
1836
1837	def get_topology(self, req, tmpdir):
1838	"""
1839	Get the ns2 content and put it into a file for parsing. Call the local
1840	or remote parser and return the topdl.Topology. Errors result in
1841	exceptions. req is the request and tmpdir is a work directory.
1842	"""
1843
1844	# The tcl parser needs to read a file so put the content into that file
1845	descr=req.get('experimentdescription', None)
1846	if descr:
1847	if 'ns2description' in descr:
1848	file_content=descr['ns2description']
1849	elif 'topdldescription' in descr:
1850	return topdl.Topology(**descr['topdldescription'])
1851	else:
1852	raise service_error(service_error.req,
1853	'Unknown experiment description type')
1854	else:
1855	raise service_error(service_error.req, "No experiment description")
1856
1857
1858	if self.splitter_url:
1859	self.log.debug("Calling remote topdl translator at %s" % \
1860	self.splitter_url)
1861	top = self.remote_ns2topdl(self.splitter_url, file_content)
1862	else:
1863	tclfile = os.path.join(tmpdir, "experiment.tcl")
1864	if file_content:
1865	try:
1866	f = open(tclfile, 'w')
1867	f.write(file_content)
1868	f.close()
1869	except EnvironmentError:
1870	raise service_error(service_error.internal,
1871	"Cannot write temp experiment description")
1872	else:
1873	raise service_error(service_error.req,
1874	"Only ns2descriptions supported")
1875	pid = "dummy"
1876	gid = "dummy"
1877	eid = "dummy"
1878
1879	tclcmd = [self.tclsh, self.tcl_splitter, '-t', '-x',
1880	str(self.muxmax), '-m', 'dummy']
1881
1882	tclcmd.extend([pid, gid, eid, tclfile])
1883
1884	self.log.debug("running local splitter %s", " ".join(tclcmd))
1885	# This is just fantastic. As a side effect the parser copies
1886	# tb_compat.tcl into the current directory, so that directory
1887	# must be writable by the fedd user. Doing this in the
1888	# temporary subdir ensures this is the case.
1889	tclparser = Popen(tclcmd, stdout=PIPE, close_fds=True,
1890	cwd=tmpdir)
1891	split_data = tclparser.stdout
1892
1893	top = topdl.topology_from_xml(file=split_data, top="experiment")
1894	os.remove(tclfile)
1895
1896	return top
1897
1898	def get_testbed_services(self, req, testbeds):
1899	"""
1900	Parse the services section of the request into two dicts mapping
1901	testbed to lists of federated_service objects. The first dict maps all
1902	exporters of services to those service objects, the second maps
1903	testbeds to service objects only for services requiring portals.
1904	"""
1905
1906	# Sanity check the services. Exports or imports from unknown testbeds
1907	# cause an exception.
1908	for s in req.get('service', []):
1909	for t in s.get('import', []):
1910	if t not in testbeds:
1911	raise service_error(service_error.req,
1912	'Service import to unknown testbed: %s' %t)
1913	for t in s.get('export', []):
1914	if t not in testbeds:
1915	raise service_error(service_error.req,
1916	'Service export from unknown testbed: %s' %t)
1917
1918
1919	# We construct both dicts here because deriving the second is more
1920	# complex than it looks - both the keys and lists can differ, and it's
1921	# much easier to generate both in one pass.
1922	masters = { }
1923	pmasters = { }
1924	for s in req.get('service', []):
1925	# If this is a service request with the importall field
1926	# set, fill it out.
1927
1928	if s.get('importall', False):
1929	s['import'] = [ tb for tb in testbeds \
1930	if tb not in s.get('export',[])]
1931	del s['importall']
1932
1933	# Add the service to masters
1934	for tb in s.get('export', []):
1935	if s.get('name', None):
1936
1937	params = { }
1938	for a in s.get('fedAttr', []):
1939	params[a.get('attribute', '')] = a.get('value','')
1940
1941	fser = federated_service(name=s['name'],
1942	exporter=tb, importers=s.get('import',[]),
1943	params=params)
1944	if fser.name == 'hide_hosts' \
1945	and 'hosts' not in fser.params:
1946	fser.params['hosts'] = \
1947	",".join(tb_hosts.get(fser.exporter, []))
1948	if tb in masters: masters[tb].append(fser)
1949	else: masters[tb] = [fser]
1950
1951	if fser.portal:
1952	if tb in pmasters: pmasters[tb].append(fser)
1953	else: pmasters[tb] = [fser]
1954	else:
1955	self.log.error('Testbed service does not have name " + \
1956	"and importers')
1957	return masters, pmasters
1958
1959	def generate_keys_and_hosts(self, tmpdir, expid, hosts, tbparams):
1960	"""
1961	Create the ssh keys necessary for interconnecting the portal nodes and
1962	the global hosts file for letting each segment know about the IP
1963	addresses in play. Save these into the repo. Add attributes to the
1964	autorizer allowing access controllers to download them and return a set
1965	of attributes that inform the segments where to find this stuff. May
1966	raise service_errors in if there are problems.
1967	"""
1968	gw_pubkey_base = "fed.%s.pub" % self.ssh_type
1969	gw_secretkey_base = "fed.%s" % self.ssh_type
1970	keydir = os.path.join(tmpdir, 'keys')
1971	gw_pubkey = os.path.join(keydir, gw_pubkey_base)
1972	gw_secretkey = os.path.join(keydir, gw_secretkey_base)
1973
1974	try:
1975	self.generate_ssh_keys(gw_secretkey, self.ssh_type)
1976	except ValueError:
1977	raise service_error(service_error.server_config,
1978	"Bad key type (%s)" % self.ssh_type)
1979
1980	self.generate_seer_certs(keydir)
1981
1982	# Copy configuration files into the remote file store
1983	# The config urlpath
1984	configpath = "/%s/config" % expid
1985	# The config file system location
1986	configdir ="%s%s" % ( self.repodir, configpath)
1987	try:
1988	os.makedirs(configdir)
1989	except EnvironmentError, e:
1990	raise service_error(service_error.internal,
1991	"Cannot create config directory: %s" % e)
1992	try:
1993	f = open("%s/hosts" % configdir, "w")
1994	print >> f, string.join(hosts, '\n')
1995	f.close()
1996	except EnvironmentError, e:
1997	raise service_error(service_error.internal,
1998	"Cannot write hosts file: %s" % e)
1999	try:
2000	copy_file(gw_pubkey, os.path.join(configdir, gw_pubkey_base))
2001	copy_file(gw_secretkey, os.path.join(configdir, gw_secretkey_base))
2002	copy_file(os.path.join(keydir, 'ca.pem'),
2003	os.path.join(configdir, 'ca.pem'))
2004	copy_file(os.path.join(keydir, 'node.pem'),
2005	os.path.join(configdir, 'node.pem'))
2006	except EnvironmentError, e:
2007	raise service_error(service_error.internal,
2008	"Cannot copy keyfiles: %s" % e)
2009
2010	# Allow the individual testbeds to access the configuration files,
2011	# again by setting an attribute for the relevant pathnames on each
2012	# allocation principal. Yeah, that's a long list comprehension.
2013	self.append_experiment_authorization(expid, set([
2014	(tbparams[tb].allocID, "%s/%s" % (configpath, f)) \
2015	for tb in tbparams.keys() \
2016	for f in ("hosts", 'ca.pem', 'node.pem',
2017	gw_secretkey_base, gw_pubkey_base)]))
2018
2019	attrs = [
2020	{
2021	'attribute': 'ssh_pubkey',
2022	'value': '%s/%s/config/%s' % \
2023	(self.repo_url, expid, gw_pubkey_base)
2024	},
2025	{
2026	'attribute': 'ssh_secretkey',
2027	'value': '%s/%s/config/%s' % \
2028	(self.repo_url, expid, gw_secretkey_base)
2029	},
2030	{
2031	'attribute': 'hosts',
2032	'value': '%s/%s/config/hosts' % \
2033	(self.repo_url, expid)
2034	},
2035	{
2036	'attribute': 'seer_ca_pem',
2037	'value': '%s/%s/config/%s' % \
2038	(self.repo_url, expid, 'ca.pem')
2039	},
2040	{
2041	'attribute': 'seer_node_pem',
2042	'value': '%s/%s/config/%s' % \
2043	(self.repo_url, expid, 'node.pem')
2044	},
2045	]
2046	return attrs
2047
2048
2049	def get_vtopo(self, req, fid):
2050	"""
2051	Return the stored virtual topology for this experiment
2052	"""
2053	rv = None
2054	state = None
2055	self.log.info("vtopo call started for %s" % fid)
2056
2057	req = req.get('VtopoRequestBody', None)
2058	if not req:
2059	raise service_error(service_error.req,
2060	"Bad request format (no VtopoRequestBody)")
2061	exp = req.get('experiment', None)
2062	if exp:
2063	if exp.has_key('fedid'):
2064	key = exp['fedid']
2065	keytype = "fedid"
2066	elif exp.has_key('localname'):
2067	key = exp['localname']
2068	keytype = "localname"
2069	else:
2070	raise service_error(service_error.req, "Unknown lookup type")
2071	else:
2072	raise service_error(service_error.req, "No request?")
2073
2074	try:
2075	proof = self.check_experiment_access(fid, key)
2076	except service_error, e:
2077	self.log.info("vtopo call failed for %s: access denied" % fid)
2078	raise e
2079
2080	self.state_lock.acquire()
2081	# XXX: this needs to be recalculated
2082	if key in self.state:
2083	if self.state[key].top is not None:
2084	vtopo = topdl.topology_to_vtopo(self.state[key].top)
2085	rv = { 'experiment' : {keytype: key },
2086	'vtopo': vtopo,
2087	'proof': proof.to_dict(),
2088	}
2089	else:
2090	state = self.state[key].status
2091	self.state_lock.release()
2092
2093	if rv:
2094	self.log.info("vtopo call completed for %s %s " % \
2095	(key, fid))
2096	return rv
2097	else:
2098	if state:
2099	self.log.info("vtopo call completed for %s %s (Not ready)" % \
2100	(key, fid))
2101	raise service_error(service_error.partial,
2102	"Not ready: %s" % state)
2103	else:
2104	self.log.info("vtopo call completed for %s %s (No experiment)"\
2105	% (key, fid))
2106	raise service_error(service_error.req, "No such experiment")
2107
2108	def get_vis(self, req, fid):
2109	"""
2110	Return the stored visualization for this experiment
2111	"""
2112	rv = None
2113	state = None
2114
2115	self.log.info("vis call started for %s" % fid)
2116	req = req.get('VisRequestBody', None)
2117	if not req:
2118	raise service_error(service_error.req,
2119	"Bad request format (no VisRequestBody)")
2120	exp = req.get('experiment', None)
2121	if exp:
2122	if exp.has_key('fedid'):
2123	key = exp['fedid']
2124	keytype = "fedid"
2125	elif exp.has_key('localname'):
2126	key = exp['localname']
2127	keytype = "localname"
2128	else:
2129	raise service_error(service_error.req, "Unknown lookup type")
2130	else:
2131	raise service_error(service_error.req, "No request?")
2132
2133	try:
2134	proof = self.check_experiment_access(fid, key)
2135	except service_error, e:
2136	self.log.info("vis call failed for %s: access denied" % fid)
2137	raise e
2138
2139	self.state_lock.acquire()
2140	# Generate the visualization
2141	if key in self.state:
2142	if self.state[key].top is not None:
2143	try:
2144	vis = self.genviz(
2145	topdl.topology_to_vtopo(self.state[key].top))
2146	except service_error, e:
2147	self.state_lock.release()
2148	raise e
2149	rv = { 'experiment' : {keytype: key },
2150	'vis': vis,
2151	'proof': proof.to_dict(),
2152	}
2153	else:
2154	state = self.state[key].status
2155	self.state_lock.release()
2156
2157	if rv:
2158	self.log.info("vis call completed for %s %s " % \
2159	(key, fid))
2160	return rv
2161	else:
2162	if state:
2163	self.log.info("vis call completed for %s %s (not ready)" % \
2164	(key, fid))
2165	raise service_error(service_error.partial,
2166	"Not ready: %s" % state)
2167	else:
2168	self.log.info("vis call completed for %s %s (no experiment)" % \
2169	(key, fid))
2170	raise service_error(service_error.req, "No such experiment")
2171
2172
2173	def save_federant_information(self, allocated, tbparams, eid, top):
2174	"""
2175	Store the various data that have changed in the experiment state
2176	between when it was started and the beginning of resource allocation.
2177	This is basically the information about each local allocation. This
2178	fills in the values of the placeholder allocation in the state. It
2179	also collects the access proofs and returns them as dicts for a
2180	response message.
2181	"""
2182	self.state_lock.acquire()
2183	exp = self.state[eid]
2184	exp.top = top.clone()
2185	# save federant information
2186	for k in allocated.keys():
2187	exp.add_allocation(tbparams[k])
2188	top.elements.append(topdl.Testbed(uri=tbparams[k].uri,
2189	type="testbed", localname=[k],
2190	service=[ s.to_topdl() for s in tbparams[k].services]))
2191
2192	# Access proofs for the response message
2193	proofs = [copy.deepcopy(p) for k in tbparams.keys()\
2194	for p in tbparams[k].proof]
2195	exp.updated()
2196	if self.state_filename:
2197	self.write_state()
2198	self.state_lock.release()
2199	return proofs
2200
2201	def clear_placeholder(self, eid, expid, tmpdir):
2202	"""
2203	Clear the placeholder and remove any allocated temporary dir.
2204	"""
2205
2206	self.state_lock.acquire()
2207	del self.state[eid]
2208	del self.state[expid]
2209	if self.state_filename: self.write_state()
2210	self.state_lock.release()
2211	if tmpdir and self.cleanup:
2212	self.remove_dirs(tmpdir)
2213
2214	# end of create_experiment sub-functions
2215
2216	def create_experiment(self, req, fid):
2217	"""
2218	The external interface to experiment creation called from the
2219	dispatcher.
2220
2221	Creates a working directory, splits the incoming description using the
2222	splitter script and parses out the various subsections using the
2223	classes above. Once each sub-experiment is created, use pooled threads
2224	to instantiate them and start it all up.
2225	"""
2226
2227	self.log.info("Create experiment call started for %s" % fid)
2228	req = req.get('CreateRequestBody', None)
2229	if req:
2230	key = self.get_experiment_key(req)
2231	else:
2232	raise service_error(service_error.req,
2233	"Bad request format (no CreateRequestBody)")
2234
2235	# Import information from the requester
2236	# import may partially succeed so always save credentials and warn
2237	if not self.auth.import_credentials(data_list=req.get('credential',[])):
2238	self.log.debug("Failed to import delegation credentials(!)")
2239	self.get_grouper_updates(fid)
2240	self.auth.update()
2241	self.auth.save()
2242
2243	try:
2244	# Make sure that the caller can talk to us
2245	proof = self.check_experiment_access(fid, key)
2246	except service_error, e:
2247	self.log.info("Create experiment call failed for %s: access denied"\
2248	% fid)
2249	raise e
2250
2251
2252	# Install the testbed map entries supplied with the request into a copy
2253	# of the testbed map.
2254	tbmap = dict(self.tbmap)
2255	for m in req.get('testbedmap', []):
2256	if 'testbed' in m and 'uri' in m:
2257	tbmap[m['testbed']] = m['uri']
2258
2259	# a place to work
2260	try:
2261	tmpdir = tempfile.mkdtemp(prefix="split-")
2262	os.mkdir(tmpdir+"/keys")
2263	except EnvironmentError:
2264	raise service_error(service_error.internal, "Cannot create tmp dir")
2265
2266	tbparams = { }
2267
2268	eid, expid, expcert_file = \
2269	self.get_experiment_ids_and_start(key, tmpdir)
2270
2271	# This catches exceptions to clear the placeholder if necessary
2272	try:
2273	if not (eid and expid):
2274	raise service_error(service_error.internal,
2275	"Cannot find local experiment info!?")
2276
2277	top = self.get_topology(req, tmpdir)
2278	self.confirm_software(top)
2279	# Assign the IPs
2280	hosts, ip_allocator = self.allocate_ips_to_topo(top)
2281	# Find the testbeds to look up
2282	tb_hosts = { }
2283	testbeds = [ ]
2284	for e in top.elements:
2285	if isinstance(e, topdl.Computer):
2286	tb = e.get_attribute('testbed') or 'default'
2287	if tb in tb_hosts: tb_hosts[tb].append(e.name)
2288	else:
2289	tb_hosts[tb] = [ e.name ]
2290	testbeds.append(tb)
2291
2292	masters, pmasters = self.get_testbed_services(req, testbeds)
2293	allocated = { } # Testbeds we can access
2294	topo ={ } # Sub topologies
2295	connInfo = { } # Connection information
2296
2297	self.get_access_to_testbeds(testbeds, fid, allocated,
2298	tbparams, masters, tbmap, expid, expcert_file)
2299
2300	# tbactive is the set of testbeds that have NATs in front of their
2301	# portals. They need to initiate connections.
2302	tbactive = set([k for k, v in tbparams.items() \
2303	if v.get_attribute('nat_portals')])
2304
2305	self.split_topology(top, topo, testbeds)
2306
2307	attrs = self.generate_keys_and_hosts(tmpdir, expid, hosts, tbparams)
2308	# XXX: PNNL debug
2309	self.log.debug("Back from generate keys")
2310
2311	part = experiment_partition(self.auth, self.store_url, tbmap,
2312	self.muxmax, self.direct_transit, tbactive)
2313	part.add_portals(top, topo, eid, pmasters, tbparams, ip_allocator,
2314	connInfo, expid)
2315	# XXX: PNNL debug
2316	self.log.debug("Back from add portals")
2317
2318	auth_attrs = set()
2319	# Now get access to the dynamic testbeds (those added above)
2320	for tb in [ t for t in topo if t not in allocated]:
2321	# XXX: PNNL debug
2322	self.log.debug("dynamic testbeds %s" %tb)
2323	self.get_access(tb, tbparams, fid, masters, tbmap,
2324	expid, expcert_file)
2325	allocated[tb] = 1
2326	store_keys = topo[tb].get_attribute('store_keys')
2327	# Give the testbed access to keys it exports or imports
2328	if store_keys:
2329	auth_attrs.update(set([
2330	(tbparams[tb].allocID, sk) \
2331	for sk in store_keys.split(" ")]))
2332
2333	# XXX: PNNL debug
2334	self.log.debug("done with dynamic testbeds %s" % auth_attrs)
2335	if auth_attrs:
2336	self.append_experiment_authorization(expid, auth_attrs)
2337
2338	# transit and disconnected testbeds may not have a connInfo entry.
2339	# Fill in the blanks.
2340	for t in allocated.keys():
2341	if not connInfo.has_key(t):
2342	connInfo[t] = { }
2343
2344	self.wrangle_software(expid, top, topo, tbparams)
2345
2346	proofs = self.save_federant_information(allocated, tbparams,
2347	eid, top)
2348	except service_error, e:
2349	# If something goes wrong in the parse (usually an access error)
2350	# clear the placeholder state. From here on out the code delays
2351	# exceptions. Failing at this point returns a fault to the remote
2352	# caller.
2353
2354	self.log.info("Create experiment call failed for %s %s: %s" %
2355	(eid, fid, e))
2356	self.clear_placeholder(eid, expid, tmpdir)
2357	raise e
2358
2359	# Start the background swapper and return the starting state. From
2360	# here on out, the state will stick around a while.
2361
2362	# Create a logger that logs to the experiment's state object as well as
2363	# to the main log file.
2364	alloc_log = logging.getLogger('fedd.experiment_control.%s' % eid)
2365	alloc_collector = self.list_log(self.state[eid].log)
2366	h = logging.StreamHandler(alloc_collector)
2367	# XXX: there should be a global one of these rather than repeating the
2368	# code.
2369	h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s",
2370	'%d %b %y %H:%M:%S'))
2371	alloc_log.addHandler(h)
2372
2373	# Start a thread to do the resource allocation
2374	t = Thread(target=self.allocate_resources,
2375	args=(allocated, masters, eid, expid, tbparams,
2376	top, topo, tmpdir, alloc_log, alloc_collector, attrs,
2377	connInfo, tbmap, expcert_file),
2378	name=eid)
2379	t.start()
2380
2381	rv = {
2382	'experimentID': [
2383	{'localname' : eid }, { 'fedid': copy.copy(expid) }
2384	],
2385	'experimentStatus': 'starting',
2386	'proof': [ proof.to_dict() ] + proofs,
2387	}
2388	self.log.info("Create experiment call succeeded for %s %s" % \
2389	(eid, fid))
2390
2391	return rv
2392
2393	def get_experiment_fedid(self, key):
2394	"""
2395	find the fedid associated with the localname key in the state database.
2396	"""
2397
2398	rv = None
2399	self.state_lock.acquire()
2400	if key in self.state:
2401	rv = self.state[key].fedid
2402	self.state_lock.release()
2403	return rv
2404
2405	def check_experiment_access(self, fid, key):
2406	"""
2407	Confirm that the fid has access to the experiment. Though a request
2408	may be made in terms of a local name, the access attribute is always
2409	the experiment's fedid.
2410	"""
2411	if not isinstance(key, fedid):
2412	key = self.get_experiment_fedid(key)
2413
2414	access_ok, proof = self.auth.check_attribute(fid, key, with_proof=True)
2415
2416	if access_ok:
2417	return proof
2418	else:
2419	raise service_error(service_error.access, "Access Denied",
2420	proof)
2421
2422
2423	def get_handler(self, path, fid):
2424	"""
2425	Perhaps surprisingly named, this function handles HTTP GET requests to
2426	this server (SOAP requests are POSTs).
2427	"""
2428	self.log.info("Get handler %s %s" % (path, fid))
2429	if len("%s" % fid) == 0:
2430	return (None, None)
2431	# XXX: log proofs?
2432	if self.auth.check_attribute(fid, path):
2433	return ("%s/%s" % (self.repodir, path), "application/binary")
2434	else:
2435	return (None, None)
2436
2437	def update_info(self, key, force=False):
2438	top = None
2439	self.state_lock.acquire()
2440	if key in self.state:
2441	if force or self.state[key].older_than(self.info_cache_limit):
2442	top = self.state[key].top
2443	if top is not None: top = top.clone()
2444	d1, info_params, cert, d2 = \
2445	self.get_segment_info(self.state[key], need_lock=False)
2446	self.state_lock.release()
2447
2448	if top is None: return
2449
2450	try:
2451	tmpdir = tempfile.mkdtemp(prefix="info-")
2452	except EnvironmentError:
2453	raise service_error(service_error.internal,
2454	"Cannot create tmp dir")
2455	cert_file = self.make_temp_certfile(cert, tmpdir)
2456
2457	data = []
2458	try:
2459	for k, (uri, aid) in info_params.items():
2460	info=self.info_segment(log=self.log, testbed=uri,
2461	cert_file=cert_file, cert_pwd=None,
2462	trusted_certs=self.trusted_certs,
2463	caller=self.call_InfoSegment)
2464	info(uri, aid)
2465	data.append(info)
2466	# Clean up the tmpdir no matter what
2467	finally:
2468	if tmpdir: self.remove_dirs(tmpdir)
2469
2470	self.annotate_topology(top, data)
2471	self.state_lock.acquire()
2472	if key in self.state:
2473	self.state[key].top = top
2474	self.state[key].updated()
2475	if self.state_filename: self.write_state()
2476	self.state_lock.release()
2477
2478
2479	def get_info(self, req, fid):
2480	"""
2481	Return all the stored info about this experiment
2482	"""
2483	rv = None
2484
2485	self.log.info("Info call started for %s" % fid)
2486	req = req.get('InfoRequestBody', None)
2487	if not req:
2488	raise service_error(service_error.req,
2489	"Bad request format (no InfoRequestBody)")
2490	exp = req.get('experiment', None)
2491	legacy = req.get('legacy', False)
2492	fresh = req.get('fresh', False)
2493	if exp:
2494	if exp.has_key('fedid'):
2495	key = exp['fedid']
2496	keytype = "fedid"
2497	elif exp.has_key('localname'):
2498	key = exp['localname']
2499	keytype = "localname"
2500	else:
2501	raise service_error(service_error.req, "Unknown lookup type")
2502	else:
2503	raise service_error(service_error.req, "No request?")
2504
2505	try:
2506	proof = self.check_experiment_access(fid, key)
2507	except service_error, e:
2508	self.log.info("Info call failed for %s: access denied" % fid)
2509
2510
2511	self.update_info(key, fresh)
2512
2513	self.state_lock.acquire()
2514	if self.state.has_key(key):
2515	rv = self.state[key].get_info()
2516	# Copy the topo if we need legacy annotations
2517	if legacy:
2518	top = self.state[key].top
2519	if top is not None: top = top.clone()
2520	self.state_lock.release()
2521	self.log.info("Gathered Info for %s %s" % (key, fid))
2522
2523	# If the legacy visualization and topology representations are
2524	# requested, calculate them and add them to the return.
2525	if legacy and rv is not None:
2526	self.log.info("Generating legacy Info for %s %s" % (key, fid))
2527	if top is not None:
2528	vtopo = topdl.topology_to_vtopo(top)
2529	if vtopo is not None:
2530	rv['vtopo'] = vtopo
2531	try:
2532	vis = self.genviz(vtopo)
2533	except service_error, e:
2534	self.log.debug('Problem generating visualization: %s' \
2535	% e)
2536	vis = None
2537	if vis is not None:
2538	rv['vis'] = vis
2539	if rv:
2540	self.log.info("Info succeded for %s %s" % (key, fid))
2541	rv['proof'] = proof.to_dict()
2542	return rv
2543	else:
2544	self.log.info("Info failed for %s %s: no experiment" % (key, fid))
2545	raise service_error(service_error.req, "No such experiment")
2546
2547	def operate_on_segments(self, op_params, cert, op, testbeds, params,
2548	results):
2549	"""
2550	Call OperateSegment on multiple testbeds and gather the results.
2551	op_params contains the parameters needed to contact that testbed, cert
2552	is a certificate containing the fedid to use, op is the operation,
2553	testbeds is a dict mapping testbed name to targets in that testbed,
2554	params are the parameters to include a,d results is a growing list of
2555	the results of the calls.
2556	"""
2557	try:
2558	tmpdir = tempfile.mkdtemp(prefix="info-")
2559	except EnvironmentError:
2560	raise service_error(service_error.internal,
2561	"Cannot create tmp dir")
2562	cert_file = self.make_temp_certfile(cert, tmpdir)
2563
2564	try:
2565	for tb, targets in testbeds.items():
2566	if tb in op_params:
2567	uri, aid = op_params[tb]
2568	operate=self.operation_segment(log=self.log, testbed=uri,
2569	cert_file=cert_file, cert_pwd=None,
2570	trusted_certs=self.trusted_certs,
2571	caller=self.call_OperationSegment)
2572	if operate(uri, aid, op, targets, params):
2573	if operate.status is not None:
2574	results.extend(operate.status)
2575	continue
2576	# Something went wrong in a weird way. Add statuses
2577	# that reflect that to results
2578	for t in targets:
2579	results.append(operation_status(t,
2580	operation_status.federant,
2581	'Unexpected error on %s' % tb))
2582	# Clean up the tmpdir no matter what
2583	finally:
2584	if tmpdir: self.remove_dirs(tmpdir)
2585
2586	def do_operation(self, req, fid):
2587	"""
2588	Find the testbeds holding each target and ask them to carry out the
2589	operation. Return the statuses.
2590	"""
2591	# Map an element to the testbed containing it
2592	def element_to_tb(e):
2593	if isinstance(e, topdl.Computer): return e.get_attribute("testbed")
2594	elif isinstance(e, topdl.Testbed): return e.name
2595	else: return None
2596	# If d is an operation_status object, make it a dict
2597	def make_dict(d):
2598	if isinstance(d, dict): return d
2599	elif isinstance(d, operation_status): return d.to_dict()
2600	else: return { }
2601
2602	def element_name(e):
2603	if isinstance(e, topdl.Computer): return e.name
2604	elif isinstance(e, topdl.Testbed):
2605	if e.localname: return e.localname[0]
2606	else: return None
2607	else: return None
2608
2609	self.log.info("Operation call started for %s" % fid)
2610	req = req.get('OperationRequestBody', None)
2611	if not req:
2612	raise service_error(service_error.req,
2613	"Bad request format (no OperationRequestBody)")
2614	exp = req.get('experiment', None)
2615	op = req.get('operation', None)
2616	targets = set(req.get('target', []))
2617	params = req.get('parameter', None)
2618
2619	if exp:
2620	if 'fedid' in exp:
2621	key = exp['fedid']
2622	keytype = "fedid"
2623	elif 'localname' in exp:
2624	key = exp['localname']
2625	keytype = "localname"
2626	else:
2627	raise service_error(service_error.req, "Unknown lookup type")
2628	else:
2629	raise service_error(service_error.req, "No request?")
2630
2631	if op is None or not targets:
2632	raise service_error(service_error.req, "No request?")
2633
2634	try:
2635	proof = self.check_experiment_access(fid, key)
2636	except service_error, e:
2637	self.log.info("Operation call failed for %s: access denied" % fid)
2638	raise e
2639
2640	self.state_lock.acquire()
2641	if key in self.state:
2642	d1, op_params, cert, d2 = \
2643	self.get_segment_info(self.state[key], need_lock=False,
2644	key='tb')
2645	top = self.state[key].top
2646	if top is not None:
2647	top = top.clone()
2648	self.state_lock.release()
2649
2650	if top is None:
2651	self.log.info("Operation call failed for %s: not active" % fid)
2652	raise service_error(service_error.partial, "No topology yet",
2653	proof=proof)
2654
2655	testbeds = { }
2656	results = []
2657	for e in top.elements:
2658	ename = element_name(e)
2659	if ename in targets:
2660	tb = element_to_tb(e)
2661	targets.remove(ename)
2662	if tb is not None:
2663	if tb in testbeds: testbeds[tb].append(ename)
2664	else: testbeds[tb] = [ ename ]
2665	else:
2666	results.append(operation_status(e.name,
2667	code=operation_status.no_target,
2668	description='Cannot map target to testbed'))
2669
2670	for t in targets:
2671	results.append(operation_status(t, operation_status.no_target))
2672
2673	self.operate_on_segments(op_params, cert, op, testbeds, params,
2674	results)
2675
2676	self.log.info("Operation call succeeded for %s" % fid)
2677	return {
2678	'experiment': exp,
2679	'status': [make_dict(r) for r in results],
2680	'proof': proof.to_dict()
2681	}
2682
2683
2684	def get_multi_info(self, req, fid):
2685	"""
2686	Return all the stored info that this fedid can access
2687	"""
2688	rv = { 'info': [ ], 'proof': [ ] }
2689
2690	self.log.info("Multi Info call started for %s" % fid)
2691	self.get_grouper_updates(fid)
2692	self.auth.update()
2693	self.auth.save()
2694	self.state_lock.acquire()
2695	for key in [ k for k in self.state.keys() if isinstance(k, fedid)]:
2696	try:
2697	proof = self.check_experiment_access(fid, key)
2698	except service_error, e:
2699	if e.code == service_error.access:
2700	continue
2701	else:
2702	self.log.info("Multi Info call failed for %s: %s" % \
2703	(e,fid))
2704	self.state_lock.release()
2705	raise e
2706
2707	if self.state.has_key(key):
2708	e = self.state[key].get_info()
2709	e['proof'] = proof.to_dict()
2710	rv['info'].append(e)
2711	rv['proof'].append(proof.to_dict())
2712	self.state_lock.release()
2713	self.log.info("Multi Info call succeeded for %s" % fid)
2714	return rv
2715
2716	def check_termination_status(self, fed_exp, force):
2717	"""
2718	Confirm that the experiment is sin a valid state to stop (or force it)
2719	return the state - invalid states for deletion and force settings cause
2720	exceptions.
2721	"""
2722	self.state_lock.acquire()
2723	status = fed_exp.status
2724
2725	if status:
2726	if status in ('starting', 'terminating'):
2727	if not force:
2728	self.state_lock.release()
2729	raise service_error(service_error.partial,
2730	'Experiment still being created or destroyed')
2731	else:
2732	self.log.warning('Experiment in %s state ' % status + \
2733	'being terminated by force.')
2734	self.state_lock.release()
2735	return status
2736	else:
2737	# No status??? trouble
2738	self.state_lock.release()
2739	raise service_error(service_error.internal,
2740	"Experiment has no status!?")
2741
2742	def get_segment_info(self, fed_exp, need_lock=True, key='aid'):
2743	ids = []
2744	term_params = { }
2745	if need_lock: self.state_lock.acquire()
2746	ids = [ x for x in (fed_exp.localname, fed_exp.fedid) if x is not None ]
2747	expcert = fed_exp.identity
2748	repo = "%s" % fed_exp.fedid
2749
2750	# Collect the allocation/segment ids into a dict keyed by the fedid
2751	# of the allocation that contains a tuple of uri, aid
2752	for i, fed in enumerate(fed_exp.get_all_allocations()):
2753	uri = fed.uri
2754	aid = fed.allocID
2755	if key == 'aid': term_params[aid] = (uri, aid)
2756	elif key == 'tb': term_params[fed.tb] = (uri, aid)
2757
2758	if need_lock: self.state_lock.release()
2759	return ids, term_params, expcert, repo
2760
2761
2762	def get_termination_info(self, fed_exp):
2763	self.state_lock.acquire()
2764	ids, term_params, expcert, repo = self.get_segment_info(fed_exp, False)
2765	# Change the experiment state
2766	fed_exp.status = 'terminating'
2767	fed_exp.updated()
2768	if self.state_filename: self.write_state()
2769	self.state_lock.release()
2770
2771	return ids, term_params, expcert, repo
2772
2773
2774	def deallocate_resources(self, term_params, expcert, status, force,
2775	dealloc_log):
2776	tmpdir = None
2777	# This try block makes sure the tempdir is cleared
2778	try:
2779	# If no expcert, try the deallocation as the experiment
2780	# controller instance.
2781	if expcert and self.auth_type != 'legacy':
2782	try:
2783	tmpdir = tempfile.mkdtemp(prefix="term-")
2784	except EnvironmentError:
2785	raise service_error(service_error.internal,
2786	"Cannot create tmp dir")
2787	cert_file = self.make_temp_certfile(expcert, tmpdir)
2788	pw = None
2789	else:
2790	cert_file = self.cert_file
2791	pw = self.cert_pwd
2792
2793	# Stop everyone. NB, wait_for_all waits until a thread starts
2794	# and then completes, so we can't wait if nothing starts. So,
2795	# no tbparams, no start.
2796	if len(term_params) > 0:
2797	tp = thread_pool(self.nthreads)
2798	for k, (uri, aid) in term_params.items():
2799	# Create and start a thread to stop the segment
2800	tp.wait_for_slot()
2801	t = pooled_thread(\
2802	target=self.terminate_segment(log=dealloc_log,
2803	testbed=uri,
2804	cert_file=cert_file,
2805	cert_pwd=pw,
2806	trusted_certs=self.trusted_certs,
2807	caller=self.call_TerminateSegment),
2808	args=(uri, aid), name=k,
2809	pdata=tp, trace_file=self.trace_file)
2810	t.start()
2811	# Wait for completions
2812	tp.wait_for_all_done()
2813
2814	# release the allocations (failed experiments have done this
2815	# already, and starting experiments may be in odd states, so we
2816	# ignore errors releasing those allocations
2817	try:
2818	for k, (uri, aid) in term_params.items():
2819	self.release_access(None, aid, uri=uri,
2820	cert_file=cert_file, cert_pwd=pw)
2821	except service_error, e:
2822	if status != 'failed' and not force:
2823	raise e
2824
2825	# Clean up the tmpdir no matter what
2826	finally:
2827	if tmpdir: self.remove_dirs(tmpdir)
2828
2829	def terminate_experiment(self, req, fid):
2830	"""
2831	Swap this experiment out on the federants and delete the shared
2832	information
2833	"""
2834	self.log.info("Terminate experiment call started for %s" % fid)
2835	tbparams = { }
2836	req = req.get('TerminateRequestBody', None)
2837	if not req:
2838	raise service_error(service_error.req,
2839	"Bad request format (no TerminateRequestBody)")
2840
2841	key = self.get_experiment_key(req, 'experiment')
2842	try:
2843	proof = self.check_experiment_access(fid, key)
2844	except service_error, e:
2845	self.log.info(
2846	"Terminate experiment call failed for %s: access denied" \
2847	% fid)
2848	raise e
2849	exp = req.get('experiment', False)
2850	force = req.get('force', False)
2851
2852	dealloc_list = [ ]
2853
2854
2855	# Create a logger that logs to the dealloc_list as well as to the main
2856	# log file.
2857	dealloc_log = logging.getLogger('fedd.experiment_control.%s' % key)
2858	dealloc_log.info("Terminating %s " %key)
2859	h = logging.StreamHandler(self.list_log(dealloc_list))
2860	# XXX: there should be a global one of these rather than repeating the
2861	# code.
2862	h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s",
2863	'%d %b %y %H:%M:%S'))
2864	dealloc_log.addHandler(h)
2865
2866	self.state_lock.acquire()
2867	fed_exp = self.state.get(key, None)
2868	self.state_lock.release()
2869	repo = None
2870
2871	if fed_exp:
2872	status = self.check_termination_status(fed_exp, force)
2873	# get_termination_info updates the experiment state
2874	ids, term_params, expcert, repo = self.get_termination_info(fed_exp)
2875	self.deallocate_resources(term_params, expcert, status, force,
2876	dealloc_log)
2877
2878	# Remove the terminated experiment
2879	self.state_lock.acquire()
2880	for id in ids:
2881	self.clear_experiment_authorization(id, need_state_lock=False)
2882	if id in self.state: del self.state[id]
2883
2884	if self.state_filename: self.write_state()
2885	self.state_lock.release()
2886
2887	# Delete any synch points associated with this experiment. All
2888	# synch points begin with the fedid of the experiment.
2889	fedid_keys = set(["fedid:%s" % f for f in ids \
2890	if isinstance(f, fedid)])
2891	for k in self.synch_store.all_keys():
2892	try:
2893	if len(k) > 45 and k[0:46] in fedid_keys:
2894	self.synch_store.del_value(k)
2895	except synch_store.BadDeletionError:
2896	pass
2897	self.write_store()
2898
2899	# Remove software and other cached stuff from the filesystem.
2900	if repo:
2901	self.remove_dirs("%s/%s" % (self.repodir, repo))
2902
2903	self.log.info("Terminate experiment succeeded for %s %s" % \
2904	(key, fid))
2905	return {
2906	'experiment': exp ,
2907	'deallocationLog': string.join(dealloc_list, ''),
2908	'proof': [proof.to_dict()],
2909	}
2910	else:
2911	self.log.info("Terminate experiment failed for %s %s: no state" % \
2912	(key, fid))
2913	raise service_error(service_error.req, "No saved state")
2914
2915
2916	def GetValue(self, req, fid):
2917	"""
2918	Get a value from the synchronized store
2919	"""
2920	req = req.get('GetValueRequestBody', None)
2921	if not req:
2922	raise service_error(service_error.req,
2923	"Bad request format (no GetValueRequestBody)")
2924
2925	name = req.get('name', None)
2926	wait = req.get('wait', False)
2927	rv = { 'name': name }
2928
2929	if not name:
2930	raise service_error(service_error.req, "No name?")
2931
2932	access_ok, proof = self.auth.check_attribute(fid, name, with_proof=True)
2933
2934	if access_ok:
2935	self.log.debug("[GetValue] asking for %s " % name)
2936	try:
2937	v = self.synch_store.get_value(name, wait)
2938	except synch_store.RevokedKeyError:
2939	# No more synch on this key
2940	raise service_error(service_error.federant,
2941	"Synch key %s revoked" % name)
2942	if v is not None:
2943	rv['value'] = v
2944	rv['proof'] = proof.to_dict()
2945	self.log.debug("[GetValue] got %s from %s" % (v, name))
2946	return rv
2947	else:
2948	raise service_error(service_error.access, "Access Denied",
2949	proof=proof)
2950
2951
2952	def SetValue(self, req, fid):
2953	"""
2954	Set a value in the synchronized store
2955	"""
2956	req = req.get('SetValueRequestBody', None)
2957	if not req:
2958	raise service_error(service_error.req,
2959	"Bad request format (no SetValueRequestBody)")
2960
2961	name = req.get('name', None)
2962	v = req.get('value', '')
2963
2964	if not name:
2965	raise service_error(service_error.req, "No name?")
2966
2967	access_ok, proof = self.auth.check_attribute(fid, name, with_proof=True)
2968
2969	if access_ok:
2970	try:
2971	self.synch_store.set_value(name, v)
2972	self.write_store()
2973	self.log.debug("[SetValue] set %s to %s" % (name, v))
2974	except synch_store.CollisionError:
2975	# Translate into a service_error
2976	raise service_error(service_error.req,
2977	"Value already set: %s" %name)
2978	except synch_store.RevokedKeyError:
2979	# No more synch on this key
2980	raise service_error(service_error.federant,
2981	"Synch key %s revoked" % name)
2982	return { 'name': name, 'value': v, 'proof': proof.to_dict() }
2983	else:
2984	raise service_error(service_error.access, "Access Denied",
2985	proof=proof)

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