1 | #!/usr/local/bin/python |
---|
2 | |
---|
3 | import os,sys |
---|
4 | import re |
---|
5 | import string |
---|
6 | import copy |
---|
7 | import pickle |
---|
8 | import logging |
---|
9 | import time |
---|
10 | |
---|
11 | from threading import * |
---|
12 | from subprocess import Popen, call, PIPE, STDOUT |
---|
13 | |
---|
14 | from util import * |
---|
15 | from allocate_project import allocate_project_local, allocate_project_remote |
---|
16 | from access_project import access_project |
---|
17 | from fedid import fedid, generate_fedid |
---|
18 | from authorizer import authorizer |
---|
19 | from service_error import service_error |
---|
20 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
---|
21 | |
---|
22 | import httplib |
---|
23 | import tempfile |
---|
24 | from urlparse import urlparse |
---|
25 | |
---|
26 | import topdl |
---|
27 | import list_log |
---|
28 | import proxy_emulab_segment |
---|
29 | import local_emulab_segment |
---|
30 | |
---|
31 | |
---|
32 | # Make log messages disappear if noone configures a fedd logger |
---|
33 | class nullHandler(logging.Handler): |
---|
34 | def emit(self, record): pass |
---|
35 | |
---|
36 | fl = logging.getLogger("fedd.access") |
---|
37 | fl.addHandler(nullHandler()) |
---|
38 | |
---|
39 | class access: |
---|
40 | """ |
---|
41 | The implementation of access control based on mapping users to projects. |
---|
42 | |
---|
43 | Users can be mapped to existing projects or have projects created |
---|
44 | dynamically. This implements both direct requests and proxies. |
---|
45 | """ |
---|
46 | |
---|
47 | class parse_error(RuntimeError): pass |
---|
48 | |
---|
49 | |
---|
50 | proxy_RequestAccess= service_caller('RequestAccess') |
---|
51 | proxy_ReleaseAccess= service_caller('ReleaseAccess') |
---|
52 | |
---|
53 | def __init__(self, config=None, auth=None): |
---|
54 | """ |
---|
55 | Initializer. Pulls parameters out of the ConfigParser's access section. |
---|
56 | """ |
---|
57 | |
---|
58 | # Make sure that the configuration is in place |
---|
59 | if not config: |
---|
60 | raise RunTimeError("No config to dragon_access.access") |
---|
61 | |
---|
62 | self.project_priority = config.getboolean("access", "project_priority") |
---|
63 | self.allow_proxy = False |
---|
64 | self.certdir = config.get("access","certdir") |
---|
65 | self.create_debug = config.getboolean("access", "create_debug") |
---|
66 | self.cli_dir = config.get("access", "cli_dir") |
---|
67 | self.axis2_home = config.get("access", "axis2_home") |
---|
68 | self.idc_url = config.get("access", "idc") |
---|
69 | |
---|
70 | self.attrs = { } |
---|
71 | self.access = { } |
---|
72 | # State is a dict of dicts indexed by segment fedid that includes the |
---|
73 | # owners of the segment as fedids (who can manipulate it, key: owners), |
---|
74 | # the repo dir/user for the allocation (key: user), Current allocation |
---|
75 | # log (key: log), and GRI of the reservation once made (key: gri) |
---|
76 | self.state = { } |
---|
77 | self.log = logging.getLogger("fedd.access") |
---|
78 | set_log_level(config, "access", self.log) |
---|
79 | self.state_lock = Lock() |
---|
80 | if not (self.cli_dir and self.axis2_home and self.idc_url): |
---|
81 | self.log.error("Must specify all of cli_dir, axis2_home, " +\ |
---|
82 | "idc in the [access] section of the configuration") |
---|
83 | |
---|
84 | if auth: self.auth = auth |
---|
85 | else: |
---|
86 | self.log.error(\ |
---|
87 | "[access]: No authorizer initialized, creating local one.") |
---|
88 | auth = authorizer() |
---|
89 | |
---|
90 | tb = config.get('access', 'testbed') |
---|
91 | if tb: self.testbed = [ t.strip() for t in tb.split(',') ] |
---|
92 | else: self.testbed = [ ] |
---|
93 | |
---|
94 | if config.has_option("access", "accessdb"): |
---|
95 | self.read_access(config.get("access", "accessdb")) |
---|
96 | |
---|
97 | self.state_filename = config.get("access", "access_state") |
---|
98 | self.read_state() |
---|
99 | |
---|
100 | # Keep cert_file and cert_pwd coming from the same place |
---|
101 | self.cert_file = config.get("access", "cert_file") |
---|
102 | if self.cert_file: |
---|
103 | self.sert_pwd = config.get("access", "cert_pw") |
---|
104 | else: |
---|
105 | self.cert_file = config.get("globals", "cert_file") |
---|
106 | self.sert_pwd = config.get("globals", "cert_pw") |
---|
107 | |
---|
108 | self.trusted_certs = config.get("access", "trusted_certs") or \ |
---|
109 | config.get("globals", "trusted_certs") |
---|
110 | |
---|
111 | self.soap_services = {\ |
---|
112 | 'RequestAccess': soap_handler("RequestAccess", self.RequestAccess), |
---|
113 | 'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess), |
---|
114 | 'StartSegment': soap_handler("StartSegment", self.StartSegment), |
---|
115 | 'TerminateSegment': soap_handler("TerminateSegment", |
---|
116 | self.TerminateSegment), |
---|
117 | } |
---|
118 | self.xmlrpc_services = {\ |
---|
119 | 'RequestAccess': xmlrpc_handler('RequestAccess', |
---|
120 | self.RequestAccess), |
---|
121 | 'ReleaseAccess': xmlrpc_handler('ReleaseAccess', |
---|
122 | self.ReleaseAccess), |
---|
123 | 'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment), |
---|
124 | 'TerminateSegment': xmlrpc_handler('TerminateSegment', |
---|
125 | self.TerminateSegment), |
---|
126 | } |
---|
127 | |
---|
128 | def read_access(self, config): |
---|
129 | """ |
---|
130 | Read a configuration file and set internal parameters. |
---|
131 | |
---|
132 | There are access lines of the |
---|
133 | form (tb, proj, user) -> user that map the first tuple of |
---|
134 | names to the user for for access purposes. Names in the key (left side) |
---|
135 | can include "<NONE> or <ANY>" to act as wildcards or to require the |
---|
136 | fields to be empty. Similarly aproj or auser can be <SAME> or |
---|
137 | <DYNAMIC> indicating that either the matching key is to be used or a |
---|
138 | dynamic user or project will be created. These names can also be |
---|
139 | federated IDs (fedid's) if prefixed with fedid:. The user is the repo |
---|
140 | directory that contains the DRAGON user credentials. |
---|
141 | Testbed attributes outside the forms above can be given using the |
---|
142 | format attribute: name value: value. The name is a single word and the |
---|
143 | value continues to the end of the line. Empty lines and lines startin |
---|
144 | with a # are ignored. |
---|
145 | |
---|
146 | Parsing errors result in a self.parse_error exception being raised. |
---|
147 | """ |
---|
148 | lineno=0 |
---|
149 | name_expr = "["+string.ascii_letters + string.digits + "\.\-_]+" |
---|
150 | fedid_expr = "fedid:[" + string.hexdigits + "]+" |
---|
151 | key_name = "(<ANY>|<NONE>|"+fedid_expr + "|"+ name_expr + ")" |
---|
152 | |
---|
153 | attr_re = re.compile('attribute:\s*([\._\-a-z0-9]+)\s+value:\s*(.*)', |
---|
154 | re.IGNORECASE) |
---|
155 | access_re = re.compile('\('+key_name+'\s*,\s*'+key_name+'\s*,\s*'+ |
---|
156 | key_name+'\s*\)\s*->\s*\(('+name_expr +')\s*\)', re.IGNORECASE) |
---|
157 | |
---|
158 | def parse_name(n): |
---|
159 | if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):]) |
---|
160 | else: return n |
---|
161 | |
---|
162 | def auth_name(n): |
---|
163 | if isinstance(n, basestring): |
---|
164 | if n =='<any>' or n =='<none>': return None |
---|
165 | else: return unicode(n) |
---|
166 | else: |
---|
167 | return n |
---|
168 | |
---|
169 | f = open(config, "r"); |
---|
170 | for line in f: |
---|
171 | lineno += 1 |
---|
172 | line = line.strip(); |
---|
173 | if len(line) == 0 or line.startswith('#'): |
---|
174 | continue |
---|
175 | |
---|
176 | # Extended (attribute: x value: y) attribute line |
---|
177 | m = attr_re.match(line) |
---|
178 | if m != None: |
---|
179 | attr, val = m.group(1,2) |
---|
180 | self.attrs[attr] = val |
---|
181 | continue |
---|
182 | |
---|
183 | # Access line (t, p, u) -> (a) line |
---|
184 | # XXX: you are here |
---|
185 | m = access_re.match(line) |
---|
186 | if m != None: |
---|
187 | access_key = tuple([ parse_name(x) for x in m.group(1,2,3)]) |
---|
188 | auth_key = tuple([ auth_name(x) for x in access_key]) |
---|
189 | user_name = auth_name(parse_name(m.group(4))) |
---|
190 | |
---|
191 | self.access[access_key] = user_name |
---|
192 | self.auth.set_attribute(auth_key, "access") |
---|
193 | continue |
---|
194 | |
---|
195 | # Nothing matched to here: unknown line - raise exception |
---|
196 | f.close() |
---|
197 | raise self.parse_error("Unknown statement at line %d of %s" % \ |
---|
198 | (lineno, config)) |
---|
199 | f.close() |
---|
200 | |
---|
201 | print self.access |
---|
202 | |
---|
203 | def get_users(self, obj): |
---|
204 | """ |
---|
205 | Return a list of the IDs of the users in dict |
---|
206 | """ |
---|
207 | if obj.has_key('user'): |
---|
208 | return [ unpack_id(u['userID']) \ |
---|
209 | for u in obj['user'] if u.has_key('userID') ] |
---|
210 | else: |
---|
211 | return None |
---|
212 | |
---|
213 | def write_state(self): |
---|
214 | if self.state_filename: |
---|
215 | try: |
---|
216 | f = open(self.state_filename, 'w') |
---|
217 | pickle.dump(self.state, f) |
---|
218 | except IOError, e: |
---|
219 | self.log.error("Can't write file %s: %s" % \ |
---|
220 | (self.state_filename, e)) |
---|
221 | except pickle.PicklingError, e: |
---|
222 | self.log.error("Pickling problem: %s" % e) |
---|
223 | except TypeError, e: |
---|
224 | self.log.error("Pickling problem (TypeError): %s" % e) |
---|
225 | |
---|
226 | |
---|
227 | def read_state(self): |
---|
228 | """ |
---|
229 | Read a new copy of access state. Old state is overwritten. |
---|
230 | |
---|
231 | State format is a simple pickling of the state dictionary. |
---|
232 | """ |
---|
233 | if self.state_filename: |
---|
234 | try: |
---|
235 | f = open(self.state_filename, "r") |
---|
236 | self.state = pickle.load(f) |
---|
237 | self.log.debug("[read_state]: Read state from %s" % \ |
---|
238 | self.state_filename) |
---|
239 | except IOError, e: |
---|
240 | self.log.warning(("[read_state]: No saved state: " +\ |
---|
241 | "Can't open %s: %s") % (self.state_filename, e)) |
---|
242 | except EOFError, e: |
---|
243 | self.log.warning(("[read_state]: " +\ |
---|
244 | "Empty or damaged state file: %s:") % \ |
---|
245 | self.state_filename) |
---|
246 | except pickle.UnpicklingError, e: |
---|
247 | self.log.warning(("[read_state]: No saved state: " + \ |
---|
248 | "Unpickling failed: %s") % e) |
---|
249 | |
---|
250 | # Add the ownership attributes to the authorizer. Note that the |
---|
251 | # indices of the allocation dict are strings, but the attributes are |
---|
252 | # fedids, so there is a conversion. |
---|
253 | for k in self.state.keys(): |
---|
254 | for o in self.state[k].get('owners', []): |
---|
255 | self.auth.set_attribute(o, fedid(hexstr=k)) |
---|
256 | self.auth.set_attribute(fedid(hexstr=k),fedid(hexstr=k)) |
---|
257 | |
---|
258 | |
---|
259 | def permute_wildcards(self, a, p): |
---|
260 | """Return a copy of a with various fields wildcarded. |
---|
261 | |
---|
262 | The bits of p control the wildcards. A set bit is a wildcard |
---|
263 | replacement with the lowest bit being user then project then testbed. |
---|
264 | """ |
---|
265 | if p & 1: user = ["<any>"] |
---|
266 | else: user = a[2] |
---|
267 | if p & 2: proj = "<any>" |
---|
268 | else: proj = a[1] |
---|
269 | if p & 4: tb = "<any>" |
---|
270 | else: tb = a[0] |
---|
271 | |
---|
272 | return (tb, proj, user) |
---|
273 | |
---|
274 | def find_access(self, search): |
---|
275 | """ |
---|
276 | Search the access DB for a match on this tuple. Return the matching |
---|
277 | user (repo dir). |
---|
278 | |
---|
279 | NB, if the initial tuple fails to match we start inserting wildcards in |
---|
280 | an order determined by self.project_priority. Try the list of users in |
---|
281 | order (when wildcarded, there's only one user in the list). |
---|
282 | """ |
---|
283 | if self.project_priority: perm = (0, 1, 2, 3, 4, 5, 6, 7) |
---|
284 | else: perm = (0, 2, 1, 3, 4, 6, 5, 7) |
---|
285 | |
---|
286 | for p in perm: |
---|
287 | s = self.permute_wildcards(search, p) |
---|
288 | # s[2] is None on an anonymous, unwildcarded request |
---|
289 | if s[2] != None: |
---|
290 | for u in s[2]: |
---|
291 | if self.access.has_key((s[0], s[1], u)): |
---|
292 | return self.access[(s[0], s[1], u)] |
---|
293 | else: |
---|
294 | if self.access.has_key(s): |
---|
295 | return self.access[s] |
---|
296 | return None |
---|
297 | |
---|
298 | def lookup_access(self, req, fid): |
---|
299 | """ |
---|
300 | Determine the allowed access for this request. Return the access and |
---|
301 | which fields are dynamic. |
---|
302 | |
---|
303 | The fedid is needed to construct the request |
---|
304 | """ |
---|
305 | # Search keys |
---|
306 | tb = None |
---|
307 | project = None |
---|
308 | user = None |
---|
309 | # Return values |
---|
310 | rp = access_project(None, ()) |
---|
311 | ru = None |
---|
312 | |
---|
313 | if req.has_key('project'): |
---|
314 | p = req['project'] |
---|
315 | if p.has_key('name'): |
---|
316 | project = unpack_id(p['name']) |
---|
317 | user = self.get_users(p) |
---|
318 | else: |
---|
319 | user = self.get_users(req) |
---|
320 | |
---|
321 | user_fedids = [ u for u in user if isinstance(u, fedid)] |
---|
322 | # Determine how the caller is representing itself. If its fedid shows |
---|
323 | # up as a project or a singleton user, let that stand. If neither the |
---|
324 | # usernames nor the project name is a fedid, the caller is a testbed. |
---|
325 | if project and isinstance(project, fedid): |
---|
326 | if project == fid: |
---|
327 | # The caller is the project (which is already in the tuple |
---|
328 | # passed in to the authorizer) |
---|
329 | owners = user_fedids |
---|
330 | owners.append(project) |
---|
331 | else: |
---|
332 | raise service_error(service_error.req, |
---|
333 | "Project asserting different fedid") |
---|
334 | else: |
---|
335 | if fid not in user_fedids: |
---|
336 | tb = fid |
---|
337 | owners = user_fedids |
---|
338 | owners.append(fid) |
---|
339 | else: |
---|
340 | if len(fedids) > 1: |
---|
341 | raise service_error(service_error.req, |
---|
342 | "User asserting different fedid") |
---|
343 | else: |
---|
344 | # Which is a singleton |
---|
345 | owners = user_fedids |
---|
346 | # Confirm authorization |
---|
347 | |
---|
348 | for u in user: |
---|
349 | self.log.debug("[lookup_access] Checking access for %s" % \ |
---|
350 | ((tb, project, u),)) |
---|
351 | if self.auth.check_attribute((tb, project, u), 'access'): |
---|
352 | self.log.debug("[lookup_access] Access granted") |
---|
353 | break |
---|
354 | else: |
---|
355 | self.log.debug("[lookup_access] Access Denied") |
---|
356 | else: |
---|
357 | raise service_error(service_error.access, "Access denied") |
---|
358 | |
---|
359 | # This maps a valid user to the Emulab projects and users to use |
---|
360 | found = self.find_access((tb, project, user)) |
---|
361 | |
---|
362 | if found == None: |
---|
363 | raise service_error(service_error.access, |
---|
364 | "Access denied - cannot map access") |
---|
365 | return found, owners |
---|
366 | |
---|
367 | def RequestAccess(self, req, fid): |
---|
368 | """ |
---|
369 | Handle the access request. Proxy if not for us. |
---|
370 | |
---|
371 | Parse out the fields and make the allocations or rejections if for us, |
---|
372 | otherwise, assuming we're willing to proxy, proxy the request out. |
---|
373 | """ |
---|
374 | |
---|
375 | # The dance to get into the request body |
---|
376 | if req.has_key('RequestAccessRequestBody'): |
---|
377 | req = req['RequestAccessRequestBody'] |
---|
378 | else: |
---|
379 | raise service_error(service_error.req, "No request!?") |
---|
380 | |
---|
381 | if req.has_key('destinationTestbed'): |
---|
382 | dt = unpack_id(req['destinationTestbed']) |
---|
383 | |
---|
384 | if dt == None or dt in self.testbed: |
---|
385 | # Request for this fedd |
---|
386 | found, owners = self.lookup_access(req, fid) |
---|
387 | # keep track of what's been added |
---|
388 | allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log) |
---|
389 | aid = unicode(allocID) |
---|
390 | |
---|
391 | self.state_lock.acquire() |
---|
392 | self.state[aid] = { } |
---|
393 | self.state[aid]['user'] = found |
---|
394 | self.state[aid]['owners'] = owners |
---|
395 | self.write_state() |
---|
396 | self.state_lock.release() |
---|
397 | for o in owners: |
---|
398 | self.auth.set_attribute(o, allocID) |
---|
399 | self.auth.set_attribute(allocID, allocID) |
---|
400 | |
---|
401 | try: |
---|
402 | f = open("%s/%s.pem" % (self.certdir, aid), "w") |
---|
403 | print >>f, alloc_cert |
---|
404 | f.close() |
---|
405 | except IOError, e: |
---|
406 | raise service_error(service_error.internal, |
---|
407 | "Can't open %s/%s : %s" % (self.certdir, aid, e)) |
---|
408 | print { 'allocID': allocID } |
---|
409 | return { 'allocID': { 'fedid': allocID } } |
---|
410 | else: |
---|
411 | if self.allow_proxy: |
---|
412 | resp = self.proxy_RequestAccess.call_service(dt, req, |
---|
413 | self.cert_file, self.cert_pwd, |
---|
414 | self.trusted_certs) |
---|
415 | if resp.has_key('RequestAccessResponseBody'): |
---|
416 | return resp['RequestAccessResponseBody'] |
---|
417 | else: |
---|
418 | return None |
---|
419 | else: |
---|
420 | raise service_error(service_error.access, |
---|
421 | "Access proxying denied") |
---|
422 | |
---|
423 | def ReleaseAccess(self, req, fid): |
---|
424 | # The dance to get into the request body |
---|
425 | if req.has_key('ReleaseAccessRequestBody'): |
---|
426 | req = req['ReleaseAccessRequestBody'] |
---|
427 | else: |
---|
428 | raise service_error(service_error.req, "No request!?") |
---|
429 | |
---|
430 | if req.has_key('destinationTestbed'): |
---|
431 | dt = unpack_id(req['destinationTestbed']) |
---|
432 | else: |
---|
433 | dt = None |
---|
434 | |
---|
435 | if dt == None or dt in self.testbed: |
---|
436 | # Local request |
---|
437 | try: |
---|
438 | if req['allocID'].has_key('localname'): |
---|
439 | auth_attr = aid = req['allocID']['localname'] |
---|
440 | elif req['allocID'].has_key('fedid'): |
---|
441 | aid = unicode(req['allocID']['fedid']) |
---|
442 | auth_attr = req['allocID']['fedid'] |
---|
443 | else: |
---|
444 | raise service_error(service_error.req, |
---|
445 | "Only localnames and fedids are understood") |
---|
446 | except KeyError: |
---|
447 | raise service_error(service_error.req, "Badly formed request") |
---|
448 | |
---|
449 | self.log.debug("[access] deallocation requested for %s", aid) |
---|
450 | if not self.auth.check_attribute(fid, auth_attr): |
---|
451 | self.log.debug("[access] deallocation denied for %s", aid) |
---|
452 | raise service_error(service_error.access, "Access Denied") |
---|
453 | |
---|
454 | self.state_lock.acquire() |
---|
455 | if self.state.has_key(aid): |
---|
456 | self.log.debug("Found allocation for %s" %aid) |
---|
457 | del self.state[aid] |
---|
458 | self.write_state() |
---|
459 | self.state_lock.release() |
---|
460 | # And remove the access cert |
---|
461 | cf = "%s/%s.pem" % (self.certdir, aid) |
---|
462 | self.log.debug("Removing %s" % cf) |
---|
463 | os.remove(cf) |
---|
464 | return { 'allocID': req['allocID'] } |
---|
465 | else: |
---|
466 | self.state_lock.release() |
---|
467 | raise service_error(service_error.req, "No such allocation") |
---|
468 | |
---|
469 | else: |
---|
470 | if self.allow_proxy: |
---|
471 | resp = self.proxy_ReleaseAccess.call_service(dt, req, |
---|
472 | self.cert_file, self.cert_pwd, |
---|
473 | self.trusted_certs) |
---|
474 | if resp.has_key('ReleaseAccessResponseBody'): |
---|
475 | return resp['ReleaseAccessResponseBody'] |
---|
476 | else: |
---|
477 | return None |
---|
478 | else: |
---|
479 | raise service_error(service_error.access, |
---|
480 | "Access proxying denied") |
---|
481 | |
---|
482 | def extract_parameters(self, top): |
---|
483 | """ |
---|
484 | DRAGON currently supports a fixed capacity link between two endpoints. |
---|
485 | Those endpoints may specify a VPN (or list or range) to use. This |
---|
486 | extracts the DRAGON endpoints and vpn preferences from the segments (as |
---|
487 | attributes) and the capacity of the connection as given by the |
---|
488 | substrate. The two endpoints VLAN choices are intersected to get set |
---|
489 | of VLANs that are acceptable (no VLAN requiremnets means any is |
---|
490 | acceptable). |
---|
491 | """ |
---|
492 | segments = filter(lambda x: isinstance(x, topdl.Segment), top.elements) |
---|
493 | |
---|
494 | print segments |
---|
495 | |
---|
496 | if len(segments) != 2 or len(top.substrates) != 1: |
---|
497 | raise service_error(service_error.req, |
---|
498 | "Requests to DRAGON must have exactlty two segments " +\ |
---|
499 | "and one substrate") |
---|
500 | |
---|
501 | ends = [ ] |
---|
502 | for s in segments: |
---|
503 | ep = s.get_attribute('dragon_endpoint') |
---|
504 | if not ep: |
---|
505 | raise service_error(service_error.req, |
---|
506 | "Missing DRAGON endpoint for %s" % s.id) |
---|
507 | v = s.get_attribute('vlans') |
---|
508 | vlans = None |
---|
509 | vset = set() |
---|
510 | # the vlans can be a single integer, a comma separated list or a |
---|
511 | # comma separated lists of dashed ranges. E.g 100 or 100,300 or |
---|
512 | # 100,300-305,400 |
---|
513 | if v: |
---|
514 | if v.count(",") > 0 : |
---|
515 | vl = [ x.strip() for x in v.split(",") ] |
---|
516 | else: |
---|
517 | vl = [ v ] |
---|
518 | for v in vl: |
---|
519 | try: |
---|
520 | if v.count("-")> 0: |
---|
521 | f, t = v.split("-", 1) |
---|
522 | for i in range(int(f), int(t)+1): |
---|
523 | vset.add(i) |
---|
524 | else: |
---|
525 | vset.add(int(v)) |
---|
526 | except ValueError: |
---|
527 | raise service_error(service_error.req, |
---|
528 | "VLAN tags must be integers (%s)" %s.name) |
---|
529 | if len(vset) > 0: |
---|
530 | if vlans: vlans &= vest |
---|
531 | else: vlans = vset |
---|
532 | ends.append(ep) |
---|
533 | |
---|
534 | |
---|
535 | sub = top.substrates[0] |
---|
536 | if sub.capacity: |
---|
537 | cap = int(sub.capacity.rate / 1000.0) |
---|
538 | if cap < 1: cap = 1 |
---|
539 | else: |
---|
540 | cap = 100 |
---|
541 | |
---|
542 | return cap, ends[0], ends[1], vlans |
---|
543 | |
---|
544 | |
---|
545 | def start_segment(self, repo, fr, to, cap, vpns=[], start=None, end=None, |
---|
546 | log=None): |
---|
547 | """ |
---|
548 | Do the actual work of creating the dragon connecton. |
---|
549 | """ |
---|
550 | if not log: log = self.log |
---|
551 | gri_re = re.compile("GRI:\s*(.*)", re.IGNORECASE) |
---|
552 | status_re = re.compile("Status:\s*(.*)", re.IGNORECASE) |
---|
553 | source_re = re.compile("Source\s+Endpoint:\s*(.*)", re.IGNORECASE) |
---|
554 | dest_re = re.compile("Destination\s+Endpoint:\s*(.*)", re.IGNORECASE) |
---|
555 | path_re = re.compile("Path:") |
---|
556 | |
---|
557 | if not vpns: |
---|
558 | vpns = [ None, None, None, None, None] |
---|
559 | |
---|
560 | if not start: |
---|
561 | start = time.time() |
---|
562 | if not end: |
---|
563 | end = start + 120 *60 |
---|
564 | |
---|
565 | |
---|
566 | status = None |
---|
567 | gri = None |
---|
568 | rv = None |
---|
569 | vlan_no = None |
---|
570 | for v in vpns: |
---|
571 | cmd = ['env', 'AXIS2_HOME=%s' % self.axis2_home, './run.sh', |
---|
572 | 'createReservation', '-repo', repo , '-url', self.idc_url, |
---|
573 | '-l2source', fr, '-l2dest', to, '-bwidth', "%s" % cap, |
---|
574 | '-vlan', "%s" % v, '-desc', 'fedd created connection', |
---|
575 | '-pathsetup', 'timer-automatic', '-start', "%d" % int(start), |
---|
576 | '-end', "%d" % int(end)] |
---|
577 | log.debug("[start_segment]: %s" % " ".join(cmd)) |
---|
578 | if not self.create_debug: |
---|
579 | p = Popen(cmd, cwd=self.cli_dir, |
---|
580 | stdout=PIPE, stderr=STDOUT, |
---|
581 | close_fds=True) |
---|
582 | for line in p.stdout: |
---|
583 | m = status_re.match(line) |
---|
584 | if m: |
---|
585 | status = m.group(1) |
---|
586 | continue |
---|
587 | m = gri_re.match(line) |
---|
588 | if m: |
---|
589 | gri = m.group(1) |
---|
590 | rv = p.wait() |
---|
591 | else: |
---|
592 | rv = 0 |
---|
593 | status = 'ACCEPTED' |
---|
594 | gri = 'debug_gri' |
---|
595 | |
---|
596 | # Reservation in progress. Poll the IDC until we know the outcome |
---|
597 | cmd = ['env', 'AXIS2_HOME=%s' % self.axis2_home, './run.sh', |
---|
598 | 'query', '-repo', repo , '-url', self.idc_url, '-gri', gri] |
---|
599 | |
---|
600 | while status in ('ACCEPTED', 'INSETUP', 'INCREATE', 'PENDING'): |
---|
601 | log.debug("[start_segment]: %s" % " ".join(cmd)) |
---|
602 | if not self.create_debug: |
---|
603 | p = Popen(cmd, cwd=self.cli_dir, |
---|
604 | stdout=PIPE, stderr=STDOUT, |
---|
605 | close_fds=True) |
---|
606 | in_path = False |
---|
607 | vpn1 = None |
---|
608 | vpn2 = None |
---|
609 | src = None |
---|
610 | dest = None |
---|
611 | for line in p.stdout: |
---|
612 | if not in_path: |
---|
613 | m = status_re.match(line) |
---|
614 | if m: |
---|
615 | status = m.group(1) |
---|
616 | continue |
---|
617 | m = source_re.match(line) |
---|
618 | if m: |
---|
619 | src = m.group(1) |
---|
620 | continue |
---|
621 | m = dest_re.match(line) |
---|
622 | if m: |
---|
623 | dest = m.group(1) |
---|
624 | continue |
---|
625 | m = path_re.match(line) |
---|
626 | if m: |
---|
627 | in_path = True |
---|
628 | if src and dest: |
---|
629 | vpn1_re = re.compile( |
---|
630 | "\s*%s,\s*\w+\s*,\s*(\d+)" % \ |
---|
631 | src.replace("*", "\*")) |
---|
632 | vpn2_re = re.compile( |
---|
633 | "\s*%s,\s*\w+\s*,\s*(\d+)" % \ |
---|
634 | dest.replace("*", "\*")) |
---|
635 | else: |
---|
636 | raise service_error(service_error.internal, |
---|
637 | "Strange output from query") |
---|
638 | else: |
---|
639 | m = vpn1_re.match(line) |
---|
640 | if m: |
---|
641 | vpn1 = m.group(1) |
---|
642 | continue |
---|
643 | m = vpn2_re.match(line) |
---|
644 | if m: |
---|
645 | vpn2 = m.group(1) |
---|
646 | continue |
---|
647 | rv = p.wait() |
---|
648 | if vpn1 == vpn2: |
---|
649 | if v is not None: |
---|
650 | if int(vpn1) == v: |
---|
651 | vlan_no = int(v) |
---|
652 | else: |
---|
653 | raise service_error(service_error.federant, |
---|
654 | "Unexpected vlan assignment") |
---|
655 | else: |
---|
656 | vlan_no = int(v) |
---|
657 | else: |
---|
658 | raise service_error(service_error.internal, |
---|
659 | "Different VPNs on DRAGON ends") |
---|
660 | log.debug("Status: %s" % status or "none") |
---|
661 | else: |
---|
662 | status = 'ACTIVE' |
---|
663 | vlan_no = int(v) or 1 |
---|
664 | if status in ('ACCEPTED', 'INSETUP', 'INCREATE', 'PENDING'): |
---|
665 | time.sleep(45) |
---|
666 | if status in ('ACTIVE', 'FINISHED', 'CANCELLED'): |
---|
667 | break |
---|
668 | |
---|
669 | if (rv == 0 and gri and vlan_no and status == 'ACTIVE'): |
---|
670 | return gri, vlan_no |
---|
671 | else: |
---|
672 | raise service_error(service_error.federant, |
---|
673 | "Cannot make reservation") |
---|
674 | |
---|
675 | def stop_segment(self, repo, gri, log=None): |
---|
676 | if not log: log = self.log |
---|
677 | cmd = ['env', 'AXIS2_HOME=%s' % self.axis2_home, './run.sh', |
---|
678 | 'cancel', '-repo', repo , '-url', self.idc_url, '-gri', gri] |
---|
679 | |
---|
680 | |
---|
681 | self.log.debug("[stop_segment]: %s" % " ".join(cmd)) |
---|
682 | if not self.create_debug: |
---|
683 | try: |
---|
684 | f = open("/dev/null", "w") |
---|
685 | call(cmd, cwd=self.cli_dir, stdout=f, stderr=f, close_fds=True) |
---|
686 | f.close() |
---|
687 | except IOError, e: |
---|
688 | raise service_error(service_error.internal, |
---|
689 | "Failed to open /dev/null: %s" % e) |
---|
690 | |
---|
691 | def StartSegment(self, req, fid): |
---|
692 | err = None # Any service_error generated after tmpdir is created |
---|
693 | rv = None # Return value from segment creation |
---|
694 | |
---|
695 | try: |
---|
696 | req = req['StartSegmentRequestBody'] |
---|
697 | except KeyError: |
---|
698 | raise service_error(server_error.req, "Badly formed request") |
---|
699 | |
---|
700 | auth_attr = req['allocID']['fedid'] |
---|
701 | aid = "%s" % auth_attr |
---|
702 | attrs = req.get('fedAttr', []) |
---|
703 | if not self.auth.check_attribute(fid, auth_attr): |
---|
704 | raise service_error(service_error.access, "Access denied") |
---|
705 | |
---|
706 | if req.has_key('segmentdescription') and \ |
---|
707 | req['segmentdescription'].has_key('topdldescription'): |
---|
708 | topo = \ |
---|
709 | topdl.Topology(**req['segmentdescription']['topdldescription']) |
---|
710 | else: |
---|
711 | raise service_error(service_error.req, |
---|
712 | "Request missing segmentdescription'") |
---|
713 | |
---|
714 | cap, src, dest, vlans = self.extract_parameters(topo) |
---|
715 | ename = aid |
---|
716 | |
---|
717 | for a in attrs: |
---|
718 | if a['attribute'] == 'experiment_name': |
---|
719 | ename = a['value'] |
---|
720 | |
---|
721 | repo = None |
---|
722 | self.state_lock.acquire() |
---|
723 | if self.state.has_key(aid): |
---|
724 | repo = self.state[aid]['user'] |
---|
725 | self.state[aid]['log'] = [ ] |
---|
726 | # Create a logger that logs to the experiment's state object as |
---|
727 | # well as to the main log file. |
---|
728 | alloc_log = logging.getLogger('fedd.access.%s' % ename) |
---|
729 | h = logging.StreamHandler( |
---|
730 | list_log.list_log(self.state[aid]['log'])) |
---|
731 | # XXX: there should be a global one of these rather than |
---|
732 | # repeating the code. |
---|
733 | h.setFormatter(logging.Formatter( |
---|
734 | "%(asctime)s %(name)s %(message)s", |
---|
735 | '%d %b %y %H:%M:%S')) |
---|
736 | alloc_log.addHandler(h) |
---|
737 | self.write_state() |
---|
738 | self.state_lock.release() |
---|
739 | |
---|
740 | if not repo: |
---|
741 | raise service_error(service_error.internal, |
---|
742 | "Can't find creation user for %s" %aid) |
---|
743 | |
---|
744 | gri, vlan_no = self.start_segment(repo, src, dest, cap, vlans, |
---|
745 | log=alloc_log) |
---|
746 | |
---|
747 | if gri: |
---|
748 | # Grab the log (this is some anal locking, but better safe than |
---|
749 | # sorry) |
---|
750 | self.state_lock.acquire() |
---|
751 | self.state[aid]['gri'] = gri |
---|
752 | logv = "".join(self.state[aid]['log']) |
---|
753 | self.write_state() |
---|
754 | self.state_lock.release() |
---|
755 | |
---|
756 | return { |
---|
757 | 'allocID': req['allocID'], |
---|
758 | 'allocationLog': logv, |
---|
759 | 'fedAttr': [ |
---|
760 | {'attribute': 'vlan', 'value': '%d' % vlan_no } |
---|
761 | ] |
---|
762 | } |
---|
763 | elif err: |
---|
764 | raise service_error(service_error.federant, |
---|
765 | "Swapin failed: %s" % err) |
---|
766 | else: |
---|
767 | raise service_error(service_error.federant, "Swapin failed") |
---|
768 | |
---|
769 | def TerminateSegment(self, req, fid): |
---|
770 | try: |
---|
771 | req = req['TerminateSegmentRequestBody'] |
---|
772 | except KeyError: |
---|
773 | raise service_error(server_error.req, "Badly formed request") |
---|
774 | |
---|
775 | auth_attr = req['allocID']['fedid'] |
---|
776 | aid = "%s" % auth_attr |
---|
777 | |
---|
778 | self.log.debug("Terminate request for %s" %aid) |
---|
779 | attrs = req.get('fedAttr', []) |
---|
780 | if not self.auth.check_attribute(fid, auth_attr): |
---|
781 | raise service_error(service_error.access, "Access denied") |
---|
782 | |
---|
783 | self.state_lock.acquire() |
---|
784 | if self.state.has_key(aid): |
---|
785 | gri = self.state[aid].get('gri', None) |
---|
786 | user = self.state[aid].get('user', None) |
---|
787 | else: |
---|
788 | gri = None |
---|
789 | user = None |
---|
790 | self.state_lock.release() |
---|
791 | self.log.debug("Stop segment for user: %s gre %s" %(user, gri)) |
---|
792 | |
---|
793 | if not gri: |
---|
794 | raise service_error(service_error.internal, |
---|
795 | "Can't find gri for %s" % aid) |
---|
796 | |
---|
797 | if not user: |
---|
798 | raise service_error(service_error.internal, |
---|
799 | "Can't find creation user for %s" % aid) |
---|
800 | |
---|
801 | self.log.debug("Stop segment for GRI: %s" %gri) |
---|
802 | self.stop_segment(user, gri) |
---|
803 | return { 'allocID': req['allocID'] } |
---|