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source: fedd/federation/protogeni_access.py @ 181aeb4

axis_examplecompt_changesinfo-opsversion-3.01version-3.02

Last change on this file since 181aeb4 was 1b6cc95, checked in by Ted Faber <faber@…>, 14 years ago
A couple random bugs that didn't get spotted until we swapped something in for real.
Property mode set to `100644`
File size: 47.4 KB

Line
1	#!/usr/local/bin/python
2
3	import os,sys
4	import stat # for chmod constants
5	import re
6	import time
7	import string
8	import copy
9	import pickle
10	import logging
11	import subprocess
12	import random
13	import traceback
14	import xml.parsers.expat
15
16	from threading import Thread, Timer, Lock
17	from M2Crypto.SSL import SSLError
18
19	from util import *
20	from access_project import access_project
21	from fedid import fedid, generate_fedid
22	from authorizer import authorizer
23	from service_error import service_error
24	from remote_service import xmlrpc_handler, soap_handler, service_caller
25
26	import httplib
27	import tempfile
28	from urlparse import urlparse
29
30	from access import access_base
31	from proxy_segment import proxy_segment
32
33	import topdl
34	import list_log
35
36
37	# Make log messages disappear if noone configures a fedd logger
38	class nullHandler(logging.Handler):
39	def emit(self, record): pass
40
41	fl = logging.getLogger("fedd.access")
42	fl.addHandler(nullHandler())
43
44	class protogeni_proxy(proxy_segment):
45	class ProtoGENIError(Exception):
46	def __init__(self, op, code, output):
47	Exception.__init__(self, output)
48	self.op = op
49	self.code = code
50	self.output = output
51
52	def __init__(self, log=None, keyfile=None, debug=False,
53	ch_url=None, sa_url=None, cm_url=None):
54	proxy_segment.__init__(self, log=log, keyfile=keyfile, debug=debug)
55
56	self.ProtoGENIError = protogeni_proxy.ProtoGENIError
57	self.ch_url = ch_url
58	self.sa_url = sa_url
59	self.cm_url = cm_url
60
61	self.call_SetValue = service_caller('SetValue')
62
63	self.debug_fail = ['Resolve']
64	self.debug_response = {
65	'RedeemTicket': ("XML blob1", "XML blob2"),
66	'SliceStatus': { 'status': 'ready' },
67	}
68
69
70	def pg_call(self, url, method, params, context):
71	max_retries = 5
72	retries = 0
73
74	s = service_caller(method, request_body_name="", strict=False)
75	self.log.debug("Calling %s %s" % (url, method))
76	if not self.debug:
77	while retries < max_retries:
78	r = s.call_xmlrpc_service(url, params, context=context)
79	code = r.get('code', -1)
80	if code == 0:
81	# Success leaves the loop here
82	return r.get('value', None)
83	elif code == 14 and retries +1 < max_retries:
84	# Busy resource
85	retries+= 1
86	self.log.info("Resource busy, retrying in 30 secs")
87	time.sleep(30)
88	else:
89	# NB: out of retries falls through to here
90	raise self.ProtoGENIError(op=method,
91	code=r.get('code', 'unknown'),
92	output=r.get('output', 'No output'))
93	else:
94	if method in self.debug_fail:
95	raise self.ProtoGENIError(op=method, code='unknown',
96	output='No output')
97	elif self.debug_response.has_key(method):
98	return self.debug_response[method]
99	else:
100	return "%s XML blob" % method
101
102
103
104	class access(access_base):
105	"""
106	The implementation of access control based on mapping users to projects.
107
108	Users can be mapped to existing projects or have projects created
109	dynamically. This implements both direct requests and proxies.
110	"""
111
112	def __init__(self, config=None, auth=None):
113	"""
114	Initializer. Pulls parameters out of the ConfigParser's access section.
115	"""
116
117	access_base.__init__(self, config, auth)
118
119	self.domain = config.get("access", "domain")
120	self.userconfdir = config.get("access","userconfdir")
121	self.userconfcmd = config.get("access","userconfcmd")
122	self.userconfurl = config.get("access","userconfurl")
123	self.federation_software = config.get("access", "federation_software")
124	self.portal_software = config.get("access", "portal_software")
125	self.ssh_port = config.get("access","ssh_port") or "22"
126	self.sshd = config.get("access","sshd")
127	self.sshd_config = config.get("access", "sshd_config")
128	self.access_type = config.get("access", "type")
129	self.staging_dir = config.get("access", "staging_dir") or "/tmp"
130	self.staging_host = config.get("access", "staging_host") \
131	or "ops.emulab.net"
132	self.local_seer_software = config.get("access", "local_seer_software")
133	self.local_seer_image = config.get("access", "local_seer_image")
134	self.local_seer_start = config.get("access", "local_seer_start")
135
136	self.dragon_endpoint = config.get("access", "dragon")
137	self.dragon_vlans = config.get("access", "dragon_vlans")
138	self.deter_internal = config.get("access", "deter_internal")
139
140	self.tunnel_config = config.getboolean("access", "tunnel_config")
141	self.portal_command = config.get("access", "portal_command")
142	self.portal_image = config.get("access", "portal_image")
143	self.portal_type = config.get("access", "portal_type") or "pc"
144	self.portal_startcommand = config.get("access", "portal_startcommand")
145	self.node_startcommand = config.get("access", "node_startcommand")
146
147	self.federation_software = self.software_list(self.federation_software)
148	self.portal_software = self.software_list(self.portal_software)
149	self.local_seer_software = self.software_list(self.local_seer_software)
150
151	self.renewal_interval = config.get("access", "renewal") or (3 * 60 )
152	self.renewal_interval = int(self.renewal_interval) * 60
153
154	self.ch_url = config.get("access", "ch_url")
155	self.sa_url = config.get("access", "sa_url")
156	self.cm_url = config.get("access", "cm_url")
157
158	self.restricted = [ ]
159
160	# read_state in the base_class
161	self.state_lock.acquire()
162	for a in ('allocation', 'projects', 'keys', 'types'):
163	if a not in self.state:
164	self.state[a] = { }
165	self.allocation = self.state['allocation']
166	self.projects = self.state['projects']
167	self.keys = self.state['keys']
168	self.types = self.state['types']
169	# Add the ownership attributes to the authorizer. Note that the
170	# indices of the allocation dict are strings, but the attributes are
171	# fedids, so there is a conversion.
172	for k in self.state.get('allocation', {}).keys():
173	for o in self.state['allocation'][k].get('owners', []):
174	self.auth.set_attribute(o, fedid(hexstr=k))
175	self.auth.set_attribute(fedid(hexstr=k),fedid(hexstr=k))
176
177	self.state_lock.release()
178
179
180	self.log = logging.getLogger("fedd.access")
181	set_log_level(config, "access", self.log)
182
183	self.access = { }
184	if config.has_option("access", "accessdb"):
185	self.read_access(config.get("access", "accessdb"),
186	access_obj=self.make_access_info)
187
188	self.lookup_access = self.lookup_access_base
189
190	self.call_SetValue = service_caller('SetValue')
191	self.call_GetValue = service_caller('GetValue')
192	self.exports = {
193	'local_seer_control': self.export_local_seer,
194	'seer_master': self.export_seer_master,
195	'hide_hosts': self.export_hide_hosts,
196	}
197
198	if not self.local_seer_image or not self.local_seer_software or \
199	not self.local_seer_start:
200	if 'local_seer_control' in self.exports:
201	del self.exports['local_seer_control']
202
203	if not self.local_seer_image or not self.local_seer_software or \
204	not self.seer_master_start:
205	if 'seer_master' in self.exports:
206	del self.exports['seer_master']
207
208	self.RenewSlices()
209
210	self.soap_services = {\
211	'RequestAccess': soap_handler("RequestAccess", self.RequestAccess),
212	'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess),
213	'StartSegment': soap_handler("StartSegment", self.StartSegment),
214	'TerminateSegment': soap_handler("TerminateSegment",
215	self.TerminateSegment),
216	}
217	self.xmlrpc_services = {\
218	'RequestAccess': xmlrpc_handler('RequestAccess',
219	self.RequestAccess),
220	'ReleaseAccess': xmlrpc_handler('ReleaseAccess',
221	self.ReleaseAccess),
222	'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment),
223	'TerminateSegment': xmlrpc_handler('TerminateSegment',
224	self.TerminateSegment),
225	}
226
227	@staticmethod
228	def make_access_info(s):
229	"""
230	Split a string of the form (id, id, id, id) ito its constituent tuples
231	and return them as a tuple. Use to import access info from the
232	access_db.
233	"""
234
235	ss = s.strip()
236	if ss.startswith('(') and ss.endswith(')'):
237	l = [ s.strip() for s in ss[1:-1].split(",")]
238	if len(l) == 4:
239	return tuple(l)
240	else:
241	raise self.parse_error(
242	"Exactly 4 elements in access info required")
243	else:
244	raise self.parse_error("Expecting parenthezied values")
245
246
247	def get_handler(self, path, fid):
248	self.log.info("Get handler %s %s" % (path, fid))
249	if self.auth.check_attribute(fid, path) and self.userconfdir:
250	return ("%s/%s" % (self.userconfdir, path), "application/binary")
251	else:
252	return (None, None)
253
254	def build_access_response(self, alloc_id, services):
255	"""
256	Create the SOAP response.
257
258	Build the dictionary description of the response and use
259	fedd_utils.pack_soap to create the soap message. ap is the allocate
260	project message returned from a remote project allocation (even if that
261	allocation was done locally).
262	"""
263	# Because alloc_id is already a fedd_services_types.IDType_Holder,
264	# there's no need to repack it
265	msg = {
266	'allocID': alloc_id,
267	'fedAttr': [
268	{ 'attribute': 'domain', 'value': self.domain } ,
269	]
270	}
271	if self.dragon_endpoint:
272	msg['fedAttr'].append({'attribute': 'dragon',
273	'value': self.dragon_endpoint})
274	if self.deter_internal:
275	msg['fedAttr'].append({'attribute': 'deter_internal',
276	'value': self.deter_internal})
277	#XXX: ??
278	if self.dragon_vlans:
279	msg['fedAttr'].append({'attribute': 'vlans',
280	'value': self.dragon_vlans})
281
282	if services:
283	msg['service'] = services
284	return msg
285
286	def RequestAccess(self, req, fid):
287	"""
288	Handle the access request.
289	"""
290
291	# The dance to get into the request body
292	if req.has_key('RequestAccessRequestBody'):
293	req = req['RequestAccessRequestBody']
294	else:
295	raise service_error(service_error.req, "No request!?")
296
297	if req.has_key('destinationTestbed'):
298	dt = unpack_id(req['destinationTestbed'])
299
300	# Request for this fedd
301	found, match = self.lookup_access(req, fid)
302	services, svc_state = self.export_services(req.get('service',[]),
303	None, None)
304	# keep track of what's been added
305	allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log)
306	aid = unicode(allocID)
307
308	self.state_lock.acquire()
309	self.allocation[aid] = { }
310	# The protoGENI certificate
311	self.allocation[aid]['credentials'] = found
312	# The list of owner FIDs
313	self.allocation[aid]['owners'] = [ fid ]
314	self.write_state()
315	self.state_lock.release()
316	self.auth.set_attribute(fid, allocID)
317	self.auth.set_attribute(allocID, allocID)
318
319	try:
320	f = open("%s/%s.pem" % (self.certdir, aid), "w")
321	print >>f, alloc_cert
322	f.close()
323	except EnvironmentError, e:
324	raise service_error(service_error.internal,
325	"Can't open %s/%s : %s" % (self.certdir, aid, e))
326	return self.build_access_response({ 'fedid': allocID }, None)
327
328
329	def ReleaseAccess(self, req, fid):
330	# The dance to get into the request body
331	if req.has_key('ReleaseAccessRequestBody'):
332	req = req['ReleaseAccessRequestBody']
333	else:
334	raise service_error(service_error.req, "No request!?")
335
336	# Local request
337	try:
338	if req['allocID'].has_key('localname'):
339	auth_attr = aid = req['allocID']['localname']
340	elif req['allocID'].has_key('fedid'):
341	aid = unicode(req['allocID']['fedid'])
342	auth_attr = req['allocID']['fedid']
343	else:
344	raise service_error(service_error.req,
345	"Only localnames and fedids are understood")
346	except KeyError:
347	raise service_error(service_error.req, "Badly formed request")
348
349	self.log.debug("[access] deallocation requested for %s", aid)
350	if not self.auth.check_attribute(fid, auth_attr):
351	self.log.debug("[access] deallocation denied for %s", aid)
352	raise service_error(service_error.access, "Access Denied")
353
354	self.state_lock.acquire()
355	if self.allocation.has_key(aid):
356	self.log.debug("Found allocation for %s" %aid)
357	del self.allocation[aid]
358	self.write_state()
359	self.state_lock.release()
360	# And remove the access cert
361	cf = "%s/%s.pem" % (self.certdir, aid)
362	self.log.debug("Removing %s" % cf)
363	os.remove(cf)
364	return { 'allocID': req['allocID'] }
365	else:
366	self.state_lock.release()
367	raise service_error(service_error.req, "No such allocation")
368
369	def manifest_to_dict(self, manifest, ignore_debug=False):
370	"""
371	Turn the manifest into a dict were each virtual nodename (i.e. the
372	topdl name) has an entry with the allocated machine in hostname and the
373	interfaces in 'interfaces'. I love having XML parser code lying
374	around.
375	"""
376	if self.create_debug and not ignore_debug:
377	self.log.debug("Returning null manifest dict")
378	return { }
379
380	# The class allows us to keep a little state - the dict under
381	# consteruction and the current entry in that dict for the interface
382	# element code.
383	class manifest_parser:
384	def __init__(self):
385	self.d = { }
386	self.current_key=None
387
388	# If the element is a node, create a dict entry for it. If it's an
389	# interface inside a node, add an entry in the interfaces list with
390	# the virtual name and component id.
391	def start_element(self, name, attrs):
392	if name == 'node':
393	self.current_key = attrs.get('virtual_id',"")
394	if self.current_key:
395	self.d[self.current_key] = {
396	'hostname': attrs.get('hostname', None),
397	'interfaces': { }
398	}
399	elif name == 'interface' and self.current_key:
400	self.d[self.current_key]['interfaces']\
401	[attrs.get('virtual_id','')] = \
402	attrs.get('component_id', None)
403	# When a node is finished, clear current_key
404	def end_element(self, name):
405	if name == 'node': self.current_key = None
406
407	node = { }
408
409	mp = manifest_parser()
410	p = xml.parsers.expat.ParserCreate()
411	# These are bound to the class we just created
412	p.StartElementHandler = mp.start_element
413	p.EndElementHandler = mp.end_element
414
415	p.Parse(manifest)
416	# Make the node dict that the callers expect
417	for k in mp.d:
418	node[k] = mp.d.get('hostname', '')
419	return mp.d
420
421	def fake_manifest(self, topo):
422	"""
423	Fake the output of manifest_to_dict with a bunch of generic node an
424	interface names, for debugging.
425	"""
426	node = { }
427	for i, e in enumerate([ e for e in topo.elements \
428	if isinstance(e, topdl.Computer)]):
429	node[e.name] = {
430	'hostname': "node%03d" % i,
431	'interfaces': { }
432	}
433	for j, inf in enumerate(e.interface):
434	node[e.name]['interfaces'][inf.name] = 'eth%d' % j
435
436	return node
437
438
439	def generate_portal_configs(self, topo, pubkey_base,
440	secretkey_base, tmpdir, leid, connInfo, services, nodes):
441
442	def conninfo_to_dict(key, info):
443	"""
444	Make a cpoy of the connection information about key, and flatten it
445	into a single dict by parsing out any feddAttrs.
446	"""
447
448	rv = None
449	for i in info:
450	if key == i.get('portal', "") or \
451	key in [e.get('element', "") \
452	for e in i.get('member', [])]:
453	rv = i.copy()
454	break
455
456	else:
457	return rv
458
459	if 'fedAttr' in rv:
460	for a in rv['fedAttr']:
461	attr = a.get('attribute', "")
462	val = a.get('value', "")
463	if attr and attr not in rv:
464	rv[attr] = val
465	del rv['fedAttr']
466	return rv
467
468	# XXX: un hardcode this
469	def client_null(f, s):
470	print >>f, "Service: %s" % s['name']
471
472	def client_seer_master(f, s):
473	print >>f, 'PortalAlias: seer-master'
474
475	def client_smb(f, s):
476	print >>f, "Service: %s" % s['name']
477	smbshare = None
478	smbuser = None
479	smbproj = None
480	for a in s.get('fedAttr', []):
481	if a.get('attribute', '') == 'SMBSHARE':
482	smbshare = a.get('value', None)
483	elif a.get('attribute', '') == 'SMBUSER':
484	smbuser = a.get('value', None)
485	elif a.get('attribute', '') == 'SMBPROJ':
486	smbproj = a.get('value', None)
487
488	if all((smbshare, smbuser, smbproj)):
489	print >>f, "SMBshare: %s" % smbshare
490	print >>f, "ProjectUser: %s" % smbuser
491	print >>f, "ProjectName: %s" % smbproj
492
493	def client_hide_hosts(f, s):
494	for a in s.get('fedAttr', [ ]):
495	if a.get('attribute', "") == 'hosts':
496	print >>f, 'Hide: %s' % a.get('value', "")
497
498	client_service_out = {
499	'SMB': client_smb,
500	'tmcd': client_null,
501	'seer': client_null,
502	'userconfig': client_null,
503	'project_export': client_null,
504	'seer_master': client_seer_master,
505	'hide_hosts': client_hide_hosts,
506	}
507
508	def client_seer_master_export(f, s):
509	print >>f, "AddedNode: seer-master"
510
511	def client_seer_local_export(f, s):
512	print >>f, "AddedNode: control"
513
514	client_export_service_out = {
515	'seer_master': client_seer_master_export,
516	'local_seer_control': client_seer_local_export,
517	}
518
519	def server_port(f, s):
520	p = urlparse(s.get('server', 'http://localhost'))
521	print >>f, 'port: remote:%s:%s:%s' % (p.port, p.hostname, p.port)
522
523	def server_null(f,s): pass
524
525	def server_seer(f, s):
526	print >>f, 'seer: true'
527
528	server_service_out = {
529	'SMB': server_port,
530	'tmcd': server_port,
531	'userconfig': server_null,
532	'project_export': server_null,
533	'seer': server_seer,
534	'seer_master': server_port,
535	'hide_hosts': server_null,
536	}
537	# XXX: end un hardcode this
538
539
540	seer_out = False
541	client_out = False
542	for e in [ e for e in topo.elements \
543	if isinstance(e, topdl.Computer) and e.get_attribute('portal')]:
544	myname = e.name
545	type = e.get_attribute('portal_type')
546
547	info = conninfo_to_dict(myname, connInfo)
548
549	if not info:
550	raise service_error(service_error.req,
551	"No connectivity info for %s" % myname)
552
553	# Translate to physical name (ProtoGENI doesn't have DNS)
554	physname = nodes.get(myname, { }).get('hostname', None)
555	peer = info.get('peer', "")
556	ldomain = self.domain
557	ssh_port = info.get('ssh_port', 22)
558
559	# Collect this for the client.conf file
560	if 'masterexperiment' in info:
561	mproj, meid = info['masterexperiment'].split("/", 1)
562
563	active = info.get('active', 'False')
564
565	if type in ('control', 'both'):
566	testbed = e.get_attribute('testbed')
567	control_gw = myname
568
569	cfn = "%s/%s.gw.conf" % (tmpdir, myname.lower())
570	tunnelconfig = self.tunnel_config
571	try:
572	f = open(cfn, "w")
573	if active == 'True':
574	print >>f, "active: True"
575	print >>f, "ssh_port: %s" % ssh_port
576	if type in ('control', 'both'):
577	for s in [s for s in services \
578	if s.get('name', "") in self.imports]:
579	server_service_out[s['name']](f, s)
580
581	if tunnelconfig:
582	print >>f, "tunnelip: %s" % tunnelconfig
583	print >>f, "peer: %s" % peer.lower()
584	print >>f, "ssh_pubkey: /usr/local/federation/etc/%s" % \
585	pubkey_base
586	print >>f, "ssh_privkey: /usr/local/federation/etc/%s" % \
587	secretkey_base
588	f.close()
589	except EnvironmentError, e:
590	raise service_error(service_error.internal,
591	"Can't write protal config %s: %s" % (cfn, e))
592
593	# Done with portals, write the client config file.
594	try:
595	f = open("%s/client.conf" % tmpdir, "w")
596	if control_gw:
597	print >>f, "ControlGateway: %s" % physname.lower()
598	for s in services:
599	if s.get('name',"") in self.imports and \
600	s.get('visibility','') == 'import':
601	client_service_out[s['name']](f, s)
602	if s.get('name', '') in self.exports and \
603	s.get('visibility', '') == 'export' and \
604	s['name'] in client_export_service_out:
605	client_export_service_out[s['name']](f, s)
606	# Seer uses this.
607	if mproj and meid:
608	print >>f, "ExperimentID: %s/%s" % (mproj, meid)
609	f.close()
610	except EnvironmentError, e:
611	raise service_error(service_error.internal,
612	"Cannot write client.conf: %s" %s)
613
614
615
616	def export_store_info(self, cf, nodes, ssh_port, connInfo):
617	"""
618	For the export requests in the connection info, install the peer names
619	at the experiment controller via SetValue calls.
620	"""
621
622	for c in connInfo:
623	for p in [ p for p in c.get('parameter', []) \
624	if p.get('type', '') == 'output']:
625
626	if p.get('name', '') == 'peer':
627	k = p.get('key', None)
628	surl = p.get('store', None)
629	if surl and k and k.index('/') != -1:
630	if self.create_debug:
631	req = { 'name': k, 'value': 'debug' }
632	self.call_SetValue(surl, req, cf)
633	else:
634	n = nodes.get(k[k.index('/')+1:], { })
635	value = n.get('hostname', None)
636	if value:
637	req = { 'name': k, 'value': value }
638	self.call_SetValue(surl, req, cf)
639	else:
640	self.log.error("No hostname for %s" % \
641	k[k.index('/'):])
642	else:
643	self.log.error("Bad export request: %s" % p)
644	elif p.get('name', '') == 'ssh_port':
645	k = p.get('key', None)
646	surl = p.get('store', None)
647	if surl and k:
648	req = { 'name': k, 'value': ssh_port }
649	self.call_SetValue(surl, req, cf)
650	else:
651	self.log.error("Bad export request: %s" % p)
652	else:
653
654	self.log.error("Unknown export parameter: %s" % \
655	p.get('name'))
656	continue
657
658	def write_node_config_script(self, elem, node, user, pubkey,
659	secretkey, stagingdir, tmpdir):
660	"""
661	Write out the configuration script that is to run on the node
662	represented by elem in the topology. This is called
663	once per node to configure.
664	"""
665	# These little functions/functors just make things more readable. Each
666	# one encapsulates a small task of copying software files or installing
667	# them.
668	class stage_file_type:
669	"""
670	Write code copying file sfrom the staging host to the host on which
671	this will run.
672	"""
673	def __init__(self, user, host, stagingdir):
674	self.user = user
675	self.host = host
676	self.stagingdir = stagingdir
677	self.scp = "/usr/bin/scp -i .ssh/id_rsa -o " + \
678	"'ForwardX11 no' -o 'StrictHostKeyChecking no' "
679
680	def __call__(self, script, file, dest="."):
681	# If the file is a full pathname, do not use stagingdir
682	if file.find('/') == -1:
683	file = "%s/%s" % (self.stagingdir, file)
684	print >>script, "%s %s@%s:%s %s" % \
685	(self.scp, self.user, self.host, file, dest)
686
687	def install_tar(script, loc, base):
688	"""
689	Print code to script to install a tarfile in loc.
690	"""
691	tar = "/bin/tar"
692	mkdir="/bin/mkdir"
693
694	print >>script, "%s -p %s" % (mkdir, loc)
695	print >>script, "%s -C %s -xzf %s" % (tar, loc, base)
696
697	def install_rpm(script, base):
698	"""
699	Print code to script to install an rpm
700	"""
701	rpm = "/bin/rpm"
702	print >>script, "%s --install %s" % (rpm, base)
703
704	ifconfig = "/sbin/ifconfig"
705	stage_file = stage_file_type(user, self.staging_host, stagingdir)
706	pname = node.get('hostname', None)
707	fed_dir = "/usr/local/federation"
708	fed_etc_dir = "%s/etc" % fed_dir
709	fed_bin_dir = "%s/bin" % fed_dir
710	fed_lib_dir = "%s/lib" % fed_dir
711
712	if pname:
713	sfile = "%s/%s.startup" % (tmpdir, pname)
714	script = open(sfile, "w")
715	# Reset the interfaces to the ones in the topo file
716	for i in [ i for i in elem.interface \
717	if not i.get_attribute('portal')]:
718	pinf = node['interfaces'].get(i.name, None)
719	addr = i.get_attribute('ip4_address')
720	netmask = i.get_attribute('ip4_netmask') or '255.255.255.0'
721	if pinf and addr:
722	print >>script, \
723	"%s %s %s netmask %s" % \
724	(ifconfig, pinf, addr, netmask)
725	else:
726	self.log.error("Missing interface or address for %s" \
727	% i.name)
728
729	for l, f in self.federation_software:
730	base = os.path.basename(f)
731	stage_file(script, base)
732	if l: install_tar(script, l, base)
733	else: install_rpm(script, base)
734
735	for s in elem.software:
736	s_base = s.location.rpartition('/')[2]
737	stage_file(script, s_base)
738	if s.install: install_tar(script, s.install, s_base)
739	else: install_rpm(script, s_base)
740
741	for f in ('hosts', pubkey, secretkey, 'client.conf',
742	'userconf'):
743	stage_file(script, f, fed_etc_dir)
744	if self.sshd:
745	stage_file(script, self.sshd, fed_bin_dir)
746	if self.sshd_config:
747	stage_file(script, self.sshd_config, fed_etc_dir)
748
749	# Look in tmpdir to get the names. They've all been copied
750	# into the (remote) staging dir
751	if os.access("%s/%s.gw.conf" % (tmpdir, elem.name), os.R_OK):
752	stage_file(script, "%s.gw.conf" % elem.name, fed_etc_dir)
753
754	# Hackery dackery dock: the ProtoGENI python is really ancient.
755	# A modern version (though packaged for Mandrake (remember
756	# Mandrake? good times, good times)) should be in the
757	# federation_software list, but we need to move rename is for
758	# SEER.
759	print >>script, "rm /usr/bin/python"
760	print >>script, "ln /usr/bin/python2.4 /usr/bin/python"
761	# Back to less hacky stuff
762
763	# Start commands
764	if elem.get_attribute('portal') and self.portal_startcommand:
765	# Install portal software
766	for l, f in self.portal_software:
767	base = os.path.basename(f)
768	stage_file(script, base)
769	if l: install_tar(script, l, base)
770	else: install_rpm(script, base)
771
772	# Portals never have a user-specified start command
773	print >>script, self.portal_startcommand
774	elif self.node_startcommand:
775	# XXX: debug
776	print >>script, "sudo perl -I%s %s/import_key.pl /users/%s/.ssh/authorized_keys /root/.ssh/authorized_keys" % (fed_lib_dir, fed_bin_dir, user)
777	# XXX: debug
778	if elem.get_attribute('startup'):
779	print >>script, "%s \\$USER '%s'" % \
780	(self.node_startcommand,
781	elem.get_attribute('startup'))
782	else:
783	print >>script, self.node_startcommand
784	script.close()
785	return sfile, pname
786	else:
787	return None, None
788
789
790	def configure_nodes(self, segment_commands, topo, nodes, user,
791	pubkey, secretkey, stagingdir, tmpdir):
792	"""
793	For each node in the topology, generate a script file that copies
794	software onto it and installs it in the proper places and then runs the
795	startup command (including the federation commands.
796	"""
797
798
799
800	for e in [ e for e in topo.elements if isinstance(e, topdl.Computer)]:
801	vname = e.name
802	sfile, pname = self.write_node_config_script(e,
803	nodes.get(vname, { }),
804	user, pubkey, secretkey, stagingdir, tmpdir)
805	if sfile:
806	if not segment_commands.scp_file(sfile, user, pname):
807	self.log.error("Could not copy script to %s" % pname)
808	else:
809	self.log.error("Unmapped node: %s" % vname)
810
811	def start_node(self, user, host, node, segment_commands):
812	"""
813	Copy an identity to a node for the configuration script to be able to
814	import data and then run the startup script remotely.
815	"""
816	# Place an identity on the node so that the copying can succeed
817	segment_commands.ssh_cmd(user, host, "scp .ssh/id_rsa %s:.ssh" % node)
818	segment_commands.ssh_cmd(user, node,
819	"sudo /bin/sh ./%s.startup &" % node)
820
821	def start_nodes(self, user, host, nodes, segment_commands):
822	"""
823	Start a thread to initialize each node and wait for them to complete.
824	Each thread runs start_node.
825	"""
826	threads = [ ]
827	for n in nodes:
828	t = Thread(target=self.start_node, args=(user, host, n,
829	segment_commands))
830	t.start()
831	threads.append(t)
832
833	done = [not t.isAlive() for t in threads]
834	while not all(done):
835	self.log.info("Waiting for threads %s" % done)
836	time.sleep(10)
837	done = [not t.isAlive() for t in threads]
838
839	def set_up_staging_filespace(self, segment_commands, user, host,
840	stagingdir):
841	"""
842	Set up teh staging area on the staging machine. To reduce the number
843	of ssh commands, we compose a script and execute it remotely.
844	"""
845
846	self.log.info("[start_segment]: creating script file")
847	try:
848	sf, scriptname = tempfile.mkstemp()
849	scriptfile = os.fdopen(sf, 'w')
850	except EnvironmentError:
851	return False
852
853	scriptbase = os.path.basename(scriptname)
854
855	# Script the filesystem changes
856	print >>scriptfile, "/bin/rm -rf %s" % stagingdir
857	print >>scriptfile, 'mkdir -p %s' % stagingdir
858	print >>scriptfile, "rm -f %s" % scriptbase
859	scriptfile.close()
860
861	# Move the script to the remote machine
862	# XXX: could collide tempfile names on the remote host
863	if segment_commands.scp_file(scriptname, user, host, scriptbase):
864	os.remove(scriptname)
865	else:
866	return False
867
868	# Execute the script (and the script's last line deletes it)
869	if not segment_commands.ssh_cmd(user, host, "sh -x %s" % scriptbase):
870	return False
871
872	def initialize_protogeni_context(self, segment_commands, certfile, certpw):
873	"""
874	Protogeni interactions take a context and a protogeni certificate.
875	This establishes both for later calls and returns them.
876	"""
877	if os.access(certfile, os.R_OK):
878	ctxt = fedd_ssl_context(my_cert=certfile, password=certpw)
879	else:
880	self.log.error("[start_segment]: Cannot read certfile: %s" % \
881	certfile)
882	return None, None
883
884	try:
885	gcred = segment_commands.pg_call(self.sa_url,
886	'GetCredential', {}, ctxt)
887	except self.ProtoGENIError, e:
888	raise service_error(service_error.federant,
889	"ProtoGENI: %s" % e)
890
891	return ctxt, gcred
892
893	def get_free_slicename(self, segment_commands, user, gcred, ctxt):
894	"""
895	Find a usable slice name by trying random ones until there's no
896	collision.
897	"""
898
899	def random_slicename(user):
900	"""
901	Return a random slicename by appending 5 letters to the username.
902	"""
903	slicename = user
904	for i in range(0,5):
905	slicename += random.choice(string.ascii_letters)
906	return slicename
907
908	while True:
909	slicename = random_slicename(user)
910	try:
911	param = {
912	'credential': gcred,
913	'hrn': slicename,
914	'type': 'Slice'
915	}
916	segment_commands.pg_call(self.sa_url, 'Resolve', param, ctxt)
917	except segment_commands.ProtoGENIError, e:
918	print e
919	break
920
921	return slicename
922
923	def allocate_slice(self, segment_commands, slicename, rspec, gcred, ctxt):
924	"""
925	Create the slice and allocate resources. If any of this stuff fails,
926	the allocations will time out on PG in short order, so we just raise
927	the service_error. Return the slice and sliver credentials as well as
928	the manifest.
929	"""
930	try:
931	param = {
932	'credential': gcred,
933	'hrn': slicename,
934	'type': 'Slice'
935	}
936	slice_cred = segment_commands.pg_call(self.sa_url, 'Register',
937	param, ctxt)
938	f = open("./slice_cred", "w")
939	print >>f, slice_cred
940	f.close()
941	# Populate the ssh keys (let PG format them)
942	param = {
943	'credential': gcred,
944	}
945	keys = segment_commands.pg_call(self.sa_url, 'GetKeys', param,
946	ctxt)
947	# Grab and redeem a ticket
948	param = {
949	'credential': slice_cred,
950	'rspec': rspec,
951	}
952	ticket = segment_commands.pg_call(self.cm_url, 'GetTicket', param,
953	ctxt)
954	f = open("./ticket", "w")
955	print >>f, ticket
956	f.close()
957	param = {
958	'credential': slice_cred,
959	'keys': keys,
960	'ticket': ticket,
961	}
962	sliver_cred, manifest = segment_commands.pg_call(self.cm_url,
963	'RedeemTicket', param, ctxt)
964	f = open("./sliver_cred", "w")
965	print >>f, sliver_cred
966	f.close()
967	f = open("./manifest", "w")
968	print >>f, manifest
969	f.close()
970	# start 'em up
971	param = {
972	'credential': sliver_cred,
973	}
974	segment_commands.pg_call(self.cm_url, 'StartSliver', param, ctxt)
975	except segment_commands.ProtoGENIError, e:
976	raise service_error(service_error.federant,
977	"ProtoGENI: %s %s" % (e.code, e))
978
979	return (slice_cred, sliver_cred, manifest)
980
981	def wait_for_slice(self, segment_commands, slice_cred, ctxt):
982	"""
983	Wait for the given slice to finish its startup. Return the final
984	status.
985	"""
986	status = 'notready'
987	try:
988	while status == 'notready':
989	param = {
990	'credential': slice_cred
991	}
992	r = segment_commands.pg_call(self.cm_url,
993	'SliceStatus', param, ctxt)
994	status = r.get('status', 'notready')
995	if status == 'notready':
996	time.sleep(30)
997	except segment_commands.ProtoGENIError, e:
998	raise service_error(service_error.federant,
999	"ProtoGENI: %s %s" % (e.code, e))
1000
1001	return status
1002
1003	def delete_slice(self, segment_commands, slice_cred, ctxt):
1004	"""
1005	Delete the slice resources. An error from the service is ignores,
1006	because the soft state will go away anyway.
1007	"""
1008	try:
1009	param = { 'credential': slice_cred }
1010	segment_commands.pg_call(self.cm_url, 'DeleteSlice',
1011	param, ctxt)
1012	except segment_commands.ProtoGENIError, e:
1013	self.log.warn("ProtoGENI: %s" % e)
1014
1015
1016
1017	def start_segment(self, segment_commands, aid, user, rspec, pubkey,
1018	secretkey, ename, stagingdir, tmpdir, certfile, certpw,
1019	export_certfile, topo, connInfo, services, timeout=0):
1020	"""
1021	Start a sub-experiment on a federant.
1022
1023	Get the current state, modify or create as appropriate, ship data
1024	and configs and start the experiment. There are small ordering
1025	differences based on the initial state of the sub-experiment.
1026	"""
1027
1028	# Local software dir
1029	lsoftdir = "%s/software" % tmpdir
1030	host = self.staging_host
1031
1032	ctxt, gcred = self.initialize_protogeni_context(segment_commands,
1033	certfile, certpw)
1034
1035	if not ctxt: return False
1036
1037	self.set_up_staging_filespace(segment_commands, user, host, stagingdir)
1038	slicename = self.get_free_slicename(segment_commands, user, gcred, ctxt)
1039	self.log.info("Creating %s" % slicename)
1040	slice_cred, sliver_cred, manifest = self.allocate_slice(
1041	segment_commands, slicename, rspec, gcred, ctxt)
1042
1043	# With manifest in hand, we can export the portal node names.
1044	if self.create_debug: nodes = self.fake_manifest(topo)
1045	else: nodes = self.manifest_to_dict(manifest)
1046
1047	self.export_store_info(export_certfile, nodes, self.ssh_port,
1048	connInfo)
1049	self.generate_portal_configs(topo, pubkey, secretkey, tmpdir,
1050	ename, connInfo, services, nodes)
1051
1052	# Copy software to the staging machine (done after generation to copy
1053	# those, too)
1054	for d in (tmpdir, lsoftdir):
1055	if os.path.isdir(d):
1056	for f in os.listdir(d):
1057	if not os.path.isdir("%s/%s" % (d, f)):
1058	if not segment_commands.scp_file("%s/%s" % (d, f),
1059	user, host, "%s/%s" % (stagingdir, f)):
1060	self.log.error("Scp failed")
1061	return False
1062
1063
1064	# Now we wait for the nodes to start on PG
1065	status = self.wait_for_slice(segment_commands, slice_cred, ctxt)
1066	if status == 'failed':
1067	self.log.error('Sliver failed to start on ProtoGENI')
1068	self.delete_slice(segment_commands, slice_cred, ctxt)
1069	return False
1070	else:
1071	# All good: save ProtoGENI info in shared state
1072	self.state_lock.acquire()
1073	self.allocation[aid]['slice_name'] = slicename
1074	self.allocation[aid]['slice_credential'] = slice_cred
1075	self.allocation[aid]['sliver_credential'] = sliver_cred
1076	self.allocation[aid]['manifest'] = manifest
1077	self.allocation[aid]['certfile'] = certfile
1078	self.allocation[aid]['certpw'] = certpw
1079	self.write_state()
1080	self.state_lock.release()
1081
1082	# Now we have configuration to do for ProtoGENI
1083	self.configure_nodes(segment_commands, topo, nodes, user, pubkey,
1084	secretkey, stagingdir, tmpdir)
1085
1086	self.start_nodes(user, self.staging_host,
1087	[ n.get('hostname', None) for n in nodes.values()],
1088	segment_commands)
1089
1090	# Everything has gone OK.
1091	return True, dict([(k, n.get('hostname', None)) \
1092	for k, n in nodes.items()])
1093
1094	def generate_rspec(self, topo, softdir, connInfo):
1095	t = topo.clone()
1096
1097	starts = { }
1098	# Weed out the things we aren't going to instantiate: Segments, portal
1099	# substrates, and portal interfaces. (The copy in the for loop allows
1100	# us to delete from e.elements in side the for loop). While we're
1101	# touching all the elements, we also adjust paths from the original
1102	# testbed to local testbed paths and put the federation commands and
1103	# startcommands into a dict so we can start them manually later.
1104	# ProtoGENI requires setup before the federation commands run, so we
1105	# run them by hand after we've seeded configurations.
1106	for e in [e for e in t.elements]:
1107	if isinstance(e, topdl.Segment):
1108	t.elements.remove(e)
1109	# Fix software paths
1110	for s in getattr(e, 'software', []):
1111	s.location = re.sub("^.*/", softdir, s.location)
1112	if isinstance(e, topdl.Computer):
1113	if e.get_attribute('portal') and self.portal_startcommand:
1114	# Portals never have a user-specified start command
1115	starts[e.name] = self.portal_startcommand
1116	elif self.node_startcommand:
1117	if e.get_attribute('startup'):
1118	starts[e.name] = "%s \\$USER '%s'" % \
1119	(self.node_startcommand,
1120	e.get_attribute('startup'))
1121	e.remove_attribute('startup')
1122	else:
1123	starts[e.name] = self.node_startcommand
1124
1125	# Remove portal interfaces
1126	e.interface = [i for i in e.interface \
1127	if not i.get_attribute('portal')]
1128
1129	t.substrates = [ s.clone() for s in t.substrates ]
1130	t.incorporate_elements()
1131
1132	# Customize the ns2 output for local portal commands and images
1133	filters = []
1134
1135	# NB: these are extra commands issued for the node, not the startcmds
1136	if self.portal_command:
1137	filters.append(topdl.generate_portal_command_filter(
1138	self.portal_command))
1139
1140	# Convert to rspec and return it
1141	exp_rspec = topdl.topology_to_rspec(t, filters)
1142
1143	return exp_rspec
1144
1145	def retrieve_software(self, topo, certfile, softdir):
1146	"""
1147	Collect the software that nodes in the topology need loaded and stage
1148	it locally. This implies retrieving it from the experiment_controller
1149	and placing it into softdir. Certfile is used to prove that this node
1150	has access to that data (it's the allocation/segment fedid). Finally
1151	local portal and federation software is also copied to the same staging
1152	directory for simplicity - all software needed for experiment creation
1153	is in softdir.
1154	"""
1155	sw = set()
1156	for e in topo.elements:
1157	for s in getattr(e, 'software', []):
1158	sw.add(s.location)
1159	os.mkdir(softdir)
1160	for s in sw:
1161	self.log.debug("Retrieving %s" % s)
1162	try:
1163	get_url(s, certfile, softdir)
1164	except:
1165	t, v, st = sys.exc_info()
1166	raise service_error(service_error.internal,
1167	"Error retrieving %s: %s" % (s, v))
1168
1169	# Copy local portal node software to the tempdir
1170	for s in (self.portal_software, self.federation_software):
1171	for l, f in s:
1172	base = os.path.basename(f)
1173	copy_file(f, "%s/%s" % (softdir, base))
1174
1175	# Ick. Put this python rpm in a place that it will get moved into
1176	# the staging area. It's a hack to install a modern (in a Roman
1177	# sense of modern) python on ProtoGENI
1178	python_rpm ="python2.4-2.4-1pydotorg.i586.rpm"
1179	if os.access("./%s" % python_rpm, os.R_OK):
1180	copy_file("./%s" % python_rpm, "%s/%s" % (softdir, python_rpm))
1181
1182
1183	def initialize_experiment_info(self, attrs, aid, certfile, tmpdir):
1184	"""
1185	Gather common configuration files, retrieve or create an experiment
1186	name and project name, and return the ssh_key filenames. Create an
1187	allocation log bound to the state log variable as well.
1188	"""
1189	configs = set(('hosts', 'ssh_pubkey', 'ssh_secretkey'))
1190	ename = None
1191	pubkey_base = None
1192	secretkey_base = None
1193	alloc_log = None
1194
1195	for a in attrs:
1196	if a['attribute'] in configs:
1197	try:
1198	self.log.debug("Retrieving %s" % a['value'])
1199	get_url(a['value'], certfile, tmpdir)
1200	except:
1201	t, v, st = sys.exc_info()
1202	raise service_error(service_error.internal,
1203	"Error retrieving %s: %s" % (a.get('value', ""), v))
1204	if a['attribute'] == 'ssh_pubkey':
1205	pubkey_base = a['value'].rpartition('/')[2]
1206	if a['attribute'] == 'ssh_secretkey':
1207	secretkey_base = a['value'].rpartition('/')[2]
1208	if a['attribute'] == 'experiment_name':
1209	ename = a['value']
1210
1211	if not ename:
1212	ename = ""
1213	for i in range(0,5):
1214	ename += random.choice(string.ascii_letters)
1215	self.log.warn("No experiment name: picked one randomly: %s" \
1216	% ename)
1217
1218	self.state_lock.acquire()
1219	if self.allocation.has_key(aid):
1220	cf, user, ssh_key, cpw = self.allocation[aid]['credentials']
1221	self.allocation[aid]['experiment'] = ename
1222	self.allocation[aid]['log'] = [ ]
1223	# Create a logger that logs to the experiment's state object as
1224	# well as to the main log file.
1225	alloc_log = logging.getLogger('fedd.access.%s' % ename)
1226	h = logging.StreamHandler(
1227	list_log.list_log(self.allocation[aid]['log']))
1228	# XXX: there should be a global one of these rather than
1229	# repeating the code.
1230	h.setFormatter(logging.Formatter(
1231	"%(asctime)s %(name)s %(message)s",
1232	'%d %b %y %H:%M:%S'))
1233	alloc_log.addHandler(h)
1234	self.write_state()
1235	else:
1236	self.log.error("No allocation for %s!?" % aid)
1237	self.state_lock.release()
1238
1239	return (ename, pubkey_base, secretkey_base, cf, user, ssh_key,
1240	cpw, alloc_log)
1241
1242	def finalize_experiment(self, topo, nodes, aid, alloc_id):
1243	# Copy the assigned names into the return topology
1244	rvtopo = topo.clone()
1245	embedding = [ ]
1246	for k, n in nodes.items():
1247	embedding.append({
1248	'toponame': k,
1249	'physname': [n ],
1250	})
1251	# Grab the log (this is some anal locking, but better safe than
1252	# sorry)
1253	self.state_lock.acquire()
1254	logv = "".join(self.allocation[aid]['log'])
1255	# It's possible that the StartSegment call gets retried (!).
1256	# if the 'started' key is in the allocation, we'll return it rather
1257	# than redo the setup.
1258	self.allocation[aid]['started'] = {
1259	'allocID': alloc_id,
1260	'allocationLog': logv,
1261	'segmentdescription': {
1262	'topdldescription': rvtopo.to_dict() },
1263	'embedding': embedding,
1264	}
1265	retval = copy.deepcopy(self.allocation[aid]['started'])
1266	self.write_state()
1267	self.state_lock.release()
1268
1269	return retval
1270
1271	def StartSegment(self, req, fid):
1272	err = None # Any service_error generated after tmpdir is created
1273	rv = None # Return value from segment creation
1274
1275	try:
1276	req = req['StartSegmentRequestBody']
1277	topref = req['segmentdescription']['topdldescription']
1278	except KeyError:
1279	raise service_error(service_error.req, "Badly formed request")
1280
1281	connInfo = req.get('connection', [])
1282	services = req.get('service', [])
1283	auth_attr = req['allocID']['fedid']
1284	aid = "%s" % auth_attr
1285	attrs = req.get('fedAttr', [])
1286	if not self.auth.check_attribute(fid, auth_attr):
1287	raise service_error(service_error.access, "Access denied")
1288	else:
1289	# See if this is a replay of an earlier succeeded StartSegment -
1290	# sometimes SSL kills 'em. If so, replay the response rather than
1291	# redoing the allocation.
1292	self.state_lock.acquire()
1293	retval = self.allocation[aid].get('started', None)
1294	self.state_lock.release()
1295	if retval:
1296	self.log.warning("Duplicate StartSegment for %s: " % aid + \
1297	"replaying response")
1298	return retval
1299
1300	if topref:
1301	topo = topdl.Topology(**topref)
1302	else:
1303	raise service_error(service_error.req,
1304	"Request missing segmentdescription'")
1305
1306	certfile = "%s/%s.pem" % (self.certdir, auth_attr)
1307	try:
1308	tmpdir = tempfile.mkdtemp(prefix="access-")
1309	softdir = "%s/software" % tmpdir
1310	except EnvironmentError:
1311	raise service_error(service_error.internal, "Cannot create tmp dir")
1312
1313	# Try block alllows us to clean up temporary files.
1314	try:
1315	self.retrieve_software(topo, certfile, softdir)
1316	self.configure_userconf(services, tmpdir)
1317	ename, pubkey_base, secretkey_base, cf, user, ssh_key, \
1318	cpw, alloc_log = self.initialize_experiment_info(attrs,
1319	aid, certfile, tmpdir)
1320	self.import_store_info(certfile, connInfo)
1321	rspec = self.generate_rspec(topo, "%s/%s/" \
1322	% (self.staging_dir, ename), connInfo)
1323
1324	segment_commands = protogeni_proxy(keyfile=ssh_key,
1325	debug=self.create_debug, log=alloc_log,
1326	ch_url = self.ch_url, sa_url=self.sa_url,
1327	cm_url=self.cm_url)
1328	rv, nodes = self.start_segment(segment_commands, aid, user, rspec,
1329	pubkey_base,
1330	secretkey_base, ename,
1331	"%s/%s" % (self.staging_dir, ename), tmpdir, cf, cpw,
1332	certfile, topo, connInfo, services)
1333	except EnvironmentError, e:
1334	err = service_error(service_error.internal, "%s" % e)
1335	except service_error, e:
1336	err = e
1337	except:
1338	t, v, st = sys.exc_info()
1339	err = service_error(service_error.internal, "%s: %s" % \
1340	(v, traceback.extract_tb(st)))
1341
1342	# Walk up tmpdir, deleting as we go
1343	if self.cleanup: self.remove_dirs(tmpdir)
1344	else: self.log.debug("[StartSegment]: not removing %s" % tmpdir)
1345
1346	if rv:
1347	return self.finalize_experiment(topo, nodes, aid, req['allocID'])
1348	elif err:
1349	raise service_error(service_error.federant,
1350	"Swapin failed: %s" % err)
1351	else:
1352	raise service_error(service_error.federant, "Swapin failed")
1353
1354	def stop_segment(self, segment_commands, user, stagingdir, slice_cred,
1355	certfile, certpw):
1356	"""
1357	Stop a sub experiment by calling swapexp on the federant
1358	"""
1359	host = self.staging_host
1360	rv = False
1361	try:
1362	# Clean out tar files: we've gone over quota in the past
1363	if stagingdir:
1364	segment_commands.ssh_cmd(user, host, "rm -rf %s" % stagingdir)
1365	if slice_cred:
1366	self.log.error('Removing Sliver on ProtoGENI')
1367	ctxt = fedd_ssl_context(my_cert=certfile, password=certpw)
1368	self.delete_slice(segment_commands, slice_cred, ctxt)
1369	return True
1370	except self.ssh_cmd_timeout:
1371	rv = False
1372	return rv
1373
1374	def TerminateSegment(self, req, fid):
1375	try:
1376	req = req['TerminateSegmentRequestBody']
1377	except KeyError:
1378	raise service_error(service_error.req, "Badly formed request")
1379
1380	auth_attr = req['allocID']['fedid']
1381	aid = "%s" % auth_attr
1382	attrs = req.get('fedAttr', [])
1383	if not self.auth.check_attribute(fid, auth_attr):
1384	raise service_error(service_error.access, "Access denied")
1385
1386	self.state_lock.acquire()
1387	if self.allocation.has_key(aid):
1388	cf, user, ssh_key, cpw = self.allocation[aid]['credentials']
1389	slice_cred = self.allocation[aid].get('slice_credential', None)
1390	ename = self.allocation[aid].get('experiment', None)
1391	else:
1392	cf, user, ssh_key, cpw = (None, None, None, None)
1393	slice_cred = None
1394	ename = None
1395	self.state_lock.release()
1396
1397	if ename:
1398	staging = "%s/%s" % ( self.staging_dir, ename)
1399	else:
1400	self.log.warn("Can't find experiment name for %s" % aid)
1401	staging = None
1402
1403	segment_commands = protogeni_proxy(keyfile=ssh_key,
1404	debug=self.create_debug, ch_url = self.ch_url,
1405	sa_url=self.sa_url, cm_url=self.cm_url)
1406	self.stop_segment(segment_commands, user, staging, slice_cred, cf, cpw)
1407	return { 'allocID': req['allocID'] }
1408
1409	def renew_segment(self, segment_commands, name, scred, interval,
1410	certfile, certpw):
1411	"""
1412	Linear code through the segment renewal calls.
1413	"""
1414	ctxt = fedd_ssl_context(my_cert=certfile, password=certpw)
1415	try:
1416	expiration = time.strftime("%Y%m%dT%H:%M:%S",
1417	time.gmtime(time.time() + interval))
1418	cred = segment_commands.pg_call(self.sa_url, 'GetCredential',
1419	{}, ctxt)
1420
1421	param = {
1422	'credential': scred,
1423	'expiration': expiration
1424	}
1425	r = segment_commands.pg_call(self.sa_url, 'RenewSlice', param, ctxt)
1426	param = {
1427	'credential': cred,
1428	'hrn': name,
1429	'type': 'Slice',
1430	}
1431	slice = segment_commands.pg_call(self.sa_url, 'Resolve',
1432	param, ctxt)
1433	uuid = slice.get('uuid', None)
1434	if uuid == None:
1435	sys.exit('No uuid for %s' % slicename)
1436
1437	print 'Calling GetCredential (uuid)'
1438	param = {
1439	'credential': cred,
1440	'uuid': uuid,
1441	'type': 'Slice',
1442	}
1443	new_scred = segment_commands.pg_call(self.sa_url, 'GetCredential',
1444	param, ctxt)
1445	f = open('./new_slice_cred', 'w')
1446	print >>f, new_scred
1447	f.close()
1448
1449	except segment_commands.ProtoGENIError, e:
1450	self.log.error("Failed to extend slice %s: %s" % (name, e))
1451	return None
1452	try:
1453	print 'Calling RenewSlice (CM)'
1454	param = {
1455	'credential': new_scred,
1456	}
1457	r = segment_commands.pg_call(self.cm_url, 'RenewSlice', param, ctxt)
1458	except segment_commands.ProtoGENIError, e:
1459	self.log.warn("Failed to renew sliver for %s: %s" % (name, e))
1460
1461	return new_scred
1462
1463
1464	def RenewSlices(self):
1465	self.log.info("Scanning for slices to renew")
1466	self.state_lock.acquire()
1467	aids = self.allocation.keys()
1468	self.state_lock.release()
1469
1470	for aid in aids:
1471	self.state_lock.acquire()
1472	if self.allocation.has_key(aid):
1473	name = self.allocation[aid].get('slice_name', None)
1474	scred = self.allocation[aid].get('slice_credential', None)
1475	cf, user, ssh_key, cpw = self.allocation[aid]['credentials']
1476	else:
1477	name = None
1478	scred = None
1479	self.state_lock.release()
1480
1481	if not os.access(cf, os.R_OK):
1482	self.log.error(
1483	"[RenewSlices] cred.file %s unreadable, ignoring" % cf)
1484	continue
1485
1486	# There's a ProtoGENI slice associated with the segment; renew it.
1487	if name and scred:
1488	segment_commands = protogeni_proxy(log=self.log,
1489	debug=self.create_debug, keyfile=ssh_key,
1490	cm_url = self.cm_url, sa_url = self.sa_url,
1491	ch_url = self.ch_url)
1492	new_scred = self.renew_segment(segment_commands, name, scred,
1493	self.renewal_interval, cf, cpw)
1494	if new_scred:
1495	self.log.info("Slice %s renewed until %s GMT" % \
1496	(name, time.asctime(time.gmtime(\
1497	time.time()+self.renewal_interval))))
1498	self.state_lock.acquire()
1499	if self.allocation.has_key(aid):
1500	self.allocation[aid]['slice_credential'] = new_scred
1501	self.state_lock.release()
1502	else:
1503	self.log.info("Failed to renew slice %s " % name)
1504
1505	# Let's do this all again soon. (4 tries before the slices time out)
1506	t = Timer(self.renewal_interval/4, self.RenewSlices)
1507	t.start()

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