src/allmydata/test/test_dirnode.py

   1
   2 import time
   3 from zope.interface import implements
   4 from twisted.trial import unittest
   5 from twisted.internet import defer
   6 from allmydata import uri, dirnode
   7 from allmydata.immutable import upload
   8 from allmydata.interfaces import IURI, IClient, IMutableFileNode, \
   9      INewDirectoryURI, IReadonlyNewDirectoryURI, IFileNode, \
  10      ExistingChildError, NoSuchChildError, \
  11      IDeepCheckResults, IDeepCheckAndRepairResults
  12 from allmydata.util import hashutil
  13 from allmydata.monitor import Monitor
  14 from allmydata.test.common import make_chk_file_uri, make_mutable_file_uri, \
  15      FakeDirectoryNode, create_chk_filenode
  16 from allmydata.checker_results import CheckerResults, CheckAndRepairResults
  17 import common_util as testutil
  18
  19 # to test dirnode.py, we want to construct a tree of real DirectoryNodes that
  20 # contain pointers to fake files. We start with a fake MutableFileNode that
  21 # stores all of its data in a static table.
  22
  23 class Marker:
  24     implements(IFileNode, IMutableFileNode) # sure, why not
  25     def __init__(self, nodeuri):
  26         if not isinstance(nodeuri, str):
  27             nodeuri = nodeuri.to_string()
  28         self.nodeuri = nodeuri
  29         si = hashutil.tagged_hash("tag1", nodeuri)[:16]
  30         fp = hashutil.tagged_hash("tag2", nodeuri)
  31         self.verifieruri = uri.SSKVerifierURI(storage_index=si, fingerprint=fp)
  32     def get_uri(self):
  33         return self.nodeuri
  34     def get_readonly_uri(self):
  35         return self.nodeuri
  36     def get_verifier(self):
  37         return self.verifieruri
  38
  39     def check(self, monitor, verify=False):
  40         r = CheckerResults("", None)
  41         r.set_healthy(True)
  42         r.set_recoverable(True)
  43         return defer.succeed(r)
  44
  45     def check_and_repair(self, monitor, verify=False):
  46         d = self.check(verify)
  47         def _got(cr):
  48             r = CheckAndRepairResults(None)
  49             r.pre_repair_results = r.post_repair_results = cr
  50             return r
  51         d.addCallback(_got)
  52         return d
  53
  54 # dirnode requires three methods from the client: upload(),
  55 # create_node_from_uri(), and create_empty_dirnode(). Of these, upload() is
  56 # only used by the convenience composite method add_file().
  57
  58 class FakeClient:
  59     implements(IClient)
  60
  61     def upload(self, uploadable):
  62         d = uploadable.get_size()
  63         d.addCallback(lambda size: uploadable.read(size))
  64         def _got_data(datav):
  65             data = "".join(datav)
  66             n = create_chk_filenode(self, data)
  67             results = upload.UploadResults()
  68             results.uri = n.get_uri()
  69             return results
  70         d.addCallback(_got_data)
  71         return d
  72
  73     def create_node_from_uri(self, u):
  74         u = IURI(u)
  75         if (INewDirectoryURI.providedBy(u)
  76             or IReadonlyNewDirectoryURI.providedBy(u)):
  77             return FakeDirectoryNode(self).init_from_uri(u)
  78         return Marker(u.to_string())
  79
  80     def create_empty_dirnode(self):
  81         n = FakeDirectoryNode(self)
  82         d = n.create()
  83         d.addCallback(lambda res: n)
  84         return d
  85
  86
  87 class Dirnode(unittest.TestCase, testutil.ShouldFailMixin, testutil.StallMixin):
  88     def setUp(self):
  89         self.client = FakeClient()
  90
  91     def test_basic(self):
  92         d = self.client.create_empty_dirnode()
  93         def _done(res):
  94             self.failUnless(isinstance(res, FakeDirectoryNode))
  95             rep = str(res)
  96             self.failUnless("RW" in rep)
  97         d.addCallback(_done)
  98         return d
  99
 100     def test_corrupt(self):
 101         d = self.client.create_empty_dirnode()
 102         def _created(dn):
 103             u = make_mutable_file_uri()
 104             d = dn.set_uri(u"child", u, {})
 105             d.addCallback(lambda res: dn.list())
 106             def _check1(children):
 107                 self.failUnless(u"child" in children)
 108             d.addCallback(_check1)
 109             d.addCallback(lambda res:
 110                           self.shouldFail(NoSuchChildError, "get bogus", None,
 111                                           dn.get, u"bogus"))
 112             def _corrupt(res):
 113                 filenode = dn._node
 114                 si = IURI(filenode.get_uri()).storage_index
 115                 old_contents = filenode.all_contents[si]
 116                 # we happen to know that the writecap is encrypted near the
 117                 # end of the string. Flip one of its bits and make sure we
 118                 # detect the corruption.
 119                 new_contents = testutil.flip_bit(old_contents, -10)
 120                 # TODO: also test flipping bits in the other portions
 121                 filenode.all_contents[si] = new_contents
 122             d.addCallback(_corrupt)
 123             def _check2(res):
 124                 self.shouldFail(hashutil.IntegrityCheckError, "corrupt",
 125                                 "HMAC does not match, crypttext is corrupted",
 126                                 dn.list)
 127             d.addCallback(_check2)
 128             return d
 129         d.addCallback(_created)
 130         return d
 131
 132     def test_check(self):
 133         d = self.client.create_empty_dirnode()
 134         d.addCallback(lambda dn: dn.check(Monitor()))
 135         def _done(res):
 136             self.failUnless(res.is_healthy())
 137         d.addCallback(_done)
 138         return d
 139
 140     def _test_deepcheck_create(self):
 141         # create a small tree with a loop, and some non-directories
 142         #  root/
 143         #  root/subdir/
 144         #  root/subdir/file1
 145         #  root/subdir/link -> root
 146         d = self.client.create_empty_dirnode()
 147         def _created_root(rootnode):
 148             self._rootnode = rootnode
 149             return rootnode.create_empty_directory(u"subdir")
 150         d.addCallback(_created_root)
 151         def _created_subdir(subdir):
 152             self._subdir = subdir
 153             d = subdir.add_file(u"file1", upload.Data("data", None))
 154             d.addCallback(lambda res: subdir.set_node(u"link", self._rootnode))
 155             return d
 156         d.addCallback(_created_subdir)
 157         def _done(res):
 158             return self._rootnode
 159         d.addCallback(_done)
 160         return d
 161
 162     def test_deepcheck(self):
 163         d = self._test_deepcheck_create()
 164         d.addCallback(lambda rootnode: rootnode.start_deep_check().when_done())
 165         def _check_results(r):
 166             self.failUnless(IDeepCheckResults.providedBy(r))
 167             c = r.get_counters()
 168             self.failUnlessEqual(c,
 169                                  {"count-objects-checked": 3,
 170                                   "count-objects-healthy": 3,
 171                                   "count-objects-unhealthy": 0,
 172                                   "count-objects-unrecoverable": 0,
 173                                   "count-corrupt-shares": 0,
 174                                   })
 175             self.failIf(r.get_corrupt_shares())
 176             self.failUnlessEqual(len(r.get_all_results()), 3)
 177         d.addCallback(_check_results)
 178         return d
 179
 180     def test_deepcheck_and_repair(self):
 181         d = self._test_deepcheck_create()
 182         d.addCallback(lambda rootnode:
 183                       rootnode.start_deep_check_and_repair().when_done())
 184         def _check_results(r):
 185             self.failUnless(IDeepCheckAndRepairResults.providedBy(r))
 186             c = r.get_counters()
 187             self.failUnlessEqual(c,
 188                                  {"count-objects-checked": 3,
 189                                   "count-objects-healthy-pre-repair": 3,
 190                                   "count-objects-unhealthy-pre-repair": 0,
 191                                   "count-objects-unrecoverable-pre-repair": 0,
 192                                   "count-corrupt-shares-pre-repair": 0,
 193                                   "count-objects-healthy-post-repair": 3,
 194                                   "count-objects-unhealthy-post-repair": 0,
 195                                   "count-objects-unrecoverable-post-repair": 0,
 196                                   "count-corrupt-shares-post-repair": 0,
 197                                   "count-repairs-attempted": 0,
 198                                   "count-repairs-successful": 0,
 199                                   "count-repairs-unsuccessful": 0,
 200                                   })
 201             self.failIf(r.get_corrupt_shares())
 202             self.failIf(r.get_remaining_corrupt_shares())
 203             self.failUnlessEqual(len(r.get_all_results()), 3)
 204         d.addCallback(_check_results)
 205         return d
 206
 207     def _mark_file_bad(self, rootnode):
 208         si = IURI(rootnode.get_uri())._filenode_uri.storage_index
 209         rootnode._node.bad_shares[si] = "unhealthy"
 210         return rootnode
 211
 212     def test_deepcheck_problems(self):
 213         d = self._test_deepcheck_create()
 214         d.addCallback(lambda rootnode: self._mark_file_bad(rootnode))
 215         d.addCallback(lambda rootnode: rootnode.start_deep_check().when_done())
 216         def _check_results(r):
 217             c = r.get_counters()
 218             self.failUnlessEqual(c,
 219                                  {"count-objects-checked": 3,
 220                                   "count-objects-healthy": 2,
 221                                   "count-objects-unhealthy": 1,
 222                                   "count-objects-unrecoverable": 0,
 223                                   "count-corrupt-shares": 0,
 224                                   })
 225             #self.failUnlessEqual(len(r.get_problems()), 1) # TODO
 226         d.addCallback(_check_results)
 227         return d
 228
 229     def test_readonly(self):
 230         fileuri = make_chk_file_uri(1234)
 231         filenode = self.client.create_node_from_uri(fileuri)
 232         uploadable = upload.Data("some data", convergence="some convergence string")
 233
 234         d = self.client.create_empty_dirnode()
 235         def _created(rw_dn):
 236             d2 = rw_dn.set_uri(u"child", fileuri)
 237             d2.addCallback(lambda res: rw_dn)
 238             return d2
 239         d.addCallback(_created)
 240
 241         def _ready(rw_dn):
 242             ro_uri = rw_dn.get_readonly_uri()
 243             ro_dn = self.client.create_node_from_uri(ro_uri)
 244             self.failUnless(ro_dn.is_readonly())
 245             self.failUnless(ro_dn.is_mutable())
 246
 247             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 248                             ro_dn.set_uri, u"newchild", fileuri)
 249             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 250                             ro_dn.set_node, u"newchild", filenode)
 251             self.shouldFail(dirnode.NotMutableError, "set_nodes ro", None,
 252                             ro_dn.set_nodes, [ (u"newchild", filenode) ])
 253             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 254                             ro_dn.add_file, u"newchild", uploadable)
 255             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 256                             ro_dn.delete, u"child")
 257             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 258                             ro_dn.create_empty_directory, u"newchild")
 259             self.shouldFail(dirnode.NotMutableError, "set_metadata_for ro", None,
 260                             ro_dn.set_metadata_for, u"child", {})
 261             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 262                             ro_dn.move_child_to, u"child", rw_dn)
 263             self.shouldFail(dirnode.NotMutableError, "set_uri ro", None,
 264                             rw_dn.move_child_to, u"child", ro_dn)
 265             return ro_dn.list()
 266         d.addCallback(_ready)
 267         def _listed(children):
 268             self.failUnless(u"child" in children)
 269         d.addCallback(_listed)
 270         return d
 271
 272     def failUnlessGreaterThan(self, a, b):
 273         self.failUnless(a > b, "%r should be > %r" % (a, b))
 274
 275     def failUnlessGreaterOrEqualThan(self, a, b):
 276         self.failUnless(a >= b, "%r should be >= %r" % (a, b))
 277
 278     def test_create(self):
 279         self.expected_manifest = []
 280
 281         d = self.client.create_empty_dirnode()
 282         def _then(n):
 283             # /
 284             self.failUnless(n.is_mutable())
 285             u = n.get_uri()
 286             self.failUnless(u)
 287             self.failUnless(u.startswith("URI:DIR2:"), u)
 288             u_ro = n.get_readonly_uri()
 289             self.failUnless(u_ro.startswith("URI:DIR2-RO:"), u_ro)
 290             u_v = n.get_verifier().to_string()
 291             self.failUnless(u_v.startswith("URI:DIR2-Verifier:"), u_v)
 292             self.expected_manifest.append( ((), u) )
 293             expected_si = n._uri._filenode_uri.storage_index
 294             self.failUnlessEqual(n.get_storage_index(), expected_si)
 295
 296             d = n.list()
 297             d.addCallback(lambda res: self.failUnlessEqual(res, {}))
 298             d.addCallback(lambda res: n.has_child(u"missing"))
 299             d.addCallback(lambda res: self.failIf(res))
 300             fake_file_uri = make_mutable_file_uri()
 301             other_file_uri = make_mutable_file_uri()
 302             m = Marker(fake_file_uri)
 303             ffu_v = m.get_verifier().to_string()
 304             self.expected_manifest.append( ((u"child",) , m.get_uri()) )
 305             d.addCallback(lambda res: n.set_uri(u"child", fake_file_uri))
 306             d.addCallback(lambda res:
 307                           self.shouldFail(ExistingChildError, "set_uri-no",
 308                                           "child 'child' already exists",
 309                                           n.set_uri, u"child", other_file_uri,
 310                                           overwrite=False))
 311             # /
 312             # /child = mutable
 313
 314             d.addCallback(lambda res: n.create_empty_directory(u"subdir"))
 315
 316             # /
 317             # /child = mutable
 318             # /subdir = directory
 319             def _created(subdir):
 320                 self.failUnless(isinstance(subdir, FakeDirectoryNode))
 321                 self.subdir = subdir
 322                 new_v = subdir.get_verifier().to_string()
 323                 assert isinstance(new_v, str)
 324                 self.expected_manifest.append( ((u"subdir",), subdir.get_uri()) )
 325             d.addCallback(_created)
 326
 327             d.addCallback(lambda res:
 328                           self.shouldFail(ExistingChildError, "mkdir-no",
 329                                           "child 'subdir' already exists",
 330                                           n.create_empty_directory, u"subdir",
 331                                           overwrite=False))
 332
 333             d.addCallback(lambda res: n.list())
 334             d.addCallback(lambda children:
 335                           self.failUnlessEqual(sorted(children.keys()),
 336                                                sorted([u"child", u"subdir"])))
 337
 338             d.addCallback(lambda res: n.start_deep_stats().when_done())
 339             def _check_deepstats(stats):
 340                 self.failUnless(isinstance(stats, dict))
 341                 expected = {"count-immutable-files": 0,
 342                             "count-mutable-files": 1,
 343                             "count-literal-files": 0,
 344                             "count-files": 1,
 345                             "count-directories": 2,
 346                             "size-immutable-files": 0,
 347                             "size-literal-files": 0,
 348                             #"size-directories": 616, # varies
 349                             #"largest-directory": 616,
 350                             "largest-directory-children": 2,
 351                             "largest-immutable-file": 0,
 352                             }
 353                 for k,v in expected.iteritems():
 354                     self.failUnlessEqual(stats[k], v,
 355                                          "stats[%s] was %s, not %s" %
 356                                          (k, stats[k], v))
 357                 self.failUnless(stats["size-directories"] > 500,
 358                                 stats["size-directories"])
 359                 self.failUnless(stats["largest-directory"] > 500,
 360                                 stats["largest-directory"])
 361                 self.failUnlessEqual(stats["size-files-histogram"], [])
 362             d.addCallback(_check_deepstats)
 363
 364             d.addCallback(lambda res: n.build_manifest().when_done())
 365             def _check_manifest(res):
 366                 manifest = res["manifest"]
 367                 self.failUnlessEqual(sorted(manifest),
 368                                      sorted(self.expected_manifest))
 369                 stats = res["stats"]
 370                 _check_deepstats(stats)
 371             d.addCallback(_check_manifest)
 372
 373             def _add_subsubdir(res):
 374                 return self.subdir.create_empty_directory(u"subsubdir")
 375             d.addCallback(_add_subsubdir)
 376             # /
 377             # /child = mutable
 378             # /subdir = directory
 379             # /subdir/subsubdir = directory
 380             d.addCallback(lambda res: n.get_child_at_path(u"subdir/subsubdir"))
 381             d.addCallback(lambda subsubdir:
 382                           self.failUnless(isinstance(subsubdir,
 383                                                      FakeDirectoryNode)))
 384             d.addCallback(lambda res: n.get_child_at_path(u""))
 385             d.addCallback(lambda res: self.failUnlessEqual(res.get_uri(),
 386                                                            n.get_uri()))
 387
 388             d.addCallback(lambda res: n.get_metadata_for(u"child"))
 389             d.addCallback(lambda metadata:
 390                           self.failUnlessEqual(sorted(metadata.keys()),
 391                                                ["ctime", "mtime"]))
 392
 393             d.addCallback(lambda res:
 394                           self.shouldFail(NoSuchChildError, "gcamap-no",
 395                                           "nope",
 396                                           n.get_child_and_metadata_at_path,
 397                                           u"subdir/nope"))
 398             d.addCallback(lambda res:
 399                           n.get_child_and_metadata_at_path(u""))
 400             def _check_child_and_metadata1(res):
 401                 child, metadata = res
 402                 self.failUnless(isinstance(child, FakeDirectoryNode))
 403                 # edge-metadata needs at least one path segment
 404                 self.failUnlessEqual(sorted(metadata.keys()), [])
 405             d.addCallback(_check_child_and_metadata1)
 406             d.addCallback(lambda res:
 407                           n.get_child_and_metadata_at_path(u"child"))
 408
 409             def _check_child_and_metadata2(res):
 410                 child, metadata = res
 411                 self.failUnlessEqual(child.get_uri(),
 412                                      fake_file_uri.to_string())
 413                 self.failUnlessEqual(sorted(metadata.keys()),
 414                                      ["ctime", "mtime"])
 415             d.addCallback(_check_child_and_metadata2)
 416
 417             d.addCallback(lambda res:
 418                           n.get_child_and_metadata_at_path(u"subdir/subsubdir"))
 419             def _check_child_and_metadata3(res):
 420                 child, metadata = res
 421                 self.failUnless(isinstance(child, FakeDirectoryNode))
 422                 self.failUnlessEqual(sorted(metadata.keys()),
 423                                      ["ctime", "mtime"])
 424             d.addCallback(_check_child_and_metadata3)
 425
 426             # set_uri + metadata
 427             # it should be possible to add a child without any metadata
 428             d.addCallback(lambda res: n.set_uri(u"c2", fake_file_uri, {}))
 429             d.addCallback(lambda res: n.get_metadata_for(u"c2"))
 430             d.addCallback(lambda metadata: self.failUnlessEqual(metadata, {}))
 431
 432             # if we don't set any defaults, the child should get timestamps
 433             d.addCallback(lambda res: n.set_uri(u"c3", fake_file_uri))
 434             d.addCallback(lambda res: n.get_metadata_for(u"c3"))
 435             d.addCallback(lambda metadata:
 436                           self.failUnlessEqual(sorted(metadata.keys()),
 437                                                ["ctime", "mtime"]))
 438
 439             # or we can add specific metadata at set_uri() time, which
 440             # overrides the timestamps
 441             d.addCallback(lambda res: n.set_uri(u"c4", fake_file_uri,
 442                                                 {"key": "value"}))
 443             d.addCallback(lambda res: n.get_metadata_for(u"c4"))
 444             d.addCallback(lambda metadata:
 445                           self.failUnlessEqual(metadata, {"key": "value"}))
 446
 447             d.addCallback(lambda res: n.delete(u"c2"))
 448             d.addCallback(lambda res: n.delete(u"c3"))
 449             d.addCallback(lambda res: n.delete(u"c4"))
 450
 451             # set_node + metadata
 452             # it should be possible to add a child without any metadata
 453             d.addCallback(lambda res: n.set_node(u"d2", n, {}))
 454             d.addCallback(lambda res: self.client.create_empty_dirnode())
 455             d.addCallback(lambda n2:
 456                           self.shouldFail(ExistingChildError, "set_node-no",
 457                                           "child 'd2' already exists",
 458                                           n.set_node, u"d2", n2,
 459                                           overwrite=False))
 460             d.addCallback(lambda res: n.get_metadata_for(u"d2"))
 461             d.addCallback(lambda metadata: self.failUnlessEqual(metadata, {}))
 462
 463             # if we don't set any defaults, the child should get timestamps
 464             d.addCallback(lambda res: n.set_node(u"d3", n))
 465             d.addCallback(lambda res: n.get_metadata_for(u"d3"))
 466             d.addCallback(lambda metadata:
 467                           self.failUnlessEqual(sorted(metadata.keys()),
 468                                                ["ctime", "mtime"]))
 469
 470             # or we can add specific metadata at set_node() time, which
 471             # overrides the timestamps
 472             d.addCallback(lambda res: n.set_node(u"d4", n,
 473                                                 {"key": "value"}))
 474             d.addCallback(lambda res: n.get_metadata_for(u"d4"))
 475             d.addCallback(lambda metadata:
 476                           self.failUnlessEqual(metadata, {"key": "value"}))
 477
 478             d.addCallback(lambda res: n.delete(u"d2"))
 479             d.addCallback(lambda res: n.delete(u"d3"))
 480             d.addCallback(lambda res: n.delete(u"d4"))
 481
 482             # metadata through set_children()
 483             d.addCallback(lambda res: n.set_children([ (u"e1", fake_file_uri),
 484                                                    (u"e2", fake_file_uri, {}),
 485                                                    (u"e3", fake_file_uri,
 486                                                     {"key": "value"}),
 487                                                    ]))
 488             d.addCallback(lambda res:
 489                           self.shouldFail(ExistingChildError, "set_children-no",
 490                                           "child 'e1' already exists",
 491                                           n.set_children,
 492                                           [ (u"e1", other_file_uri),
 493                                             (u"new", other_file_uri), ],
 494                                           overwrite=False))
 495             # and 'new' should not have been created
 496             d.addCallback(lambda res: n.list())
 497             d.addCallback(lambda children: self.failIf(u"new" in children))
 498             d.addCallback(lambda res: n.get_metadata_for(u"e1"))
 499             d.addCallback(lambda metadata:
 500                           self.failUnlessEqual(sorted(metadata.keys()),
 501                                                ["ctime", "mtime"]))
 502             d.addCallback(lambda res: n.get_metadata_for(u"e2"))
 503             d.addCallback(lambda metadata: self.failUnlessEqual(metadata, {}))
 504             d.addCallback(lambda res: n.get_metadata_for(u"e3"))
 505             d.addCallback(lambda metadata:
 506                           self.failUnlessEqual(metadata, {"key": "value"}))
 507
 508             d.addCallback(lambda res: n.delete(u"e1"))
 509             d.addCallback(lambda res: n.delete(u"e2"))
 510             d.addCallback(lambda res: n.delete(u"e3"))
 511
 512             # metadata through set_nodes()
 513             d.addCallback(lambda res: n.set_nodes([ (u"f1", n),
 514                                                     (u"f2", n, {}),
 515                                                     (u"f3", n,
 516                                                      {"key": "value"}),
 517                                                     ]))
 518             d.addCallback(lambda res:
 519                           self.shouldFail(ExistingChildError, "set_nodes-no",
 520                                           "child 'f1' already exists",
 521                                           n.set_nodes,
 522                                           [ (u"f1", n),
 523                                             (u"new", n), ],
 524                                           overwrite=False))
 525             # and 'new' should not have been created
 526             d.addCallback(lambda res: n.list())
 527             d.addCallback(lambda children: self.failIf(u"new" in children))
 528             d.addCallback(lambda res: n.get_metadata_for(u"f1"))
 529             d.addCallback(lambda metadata:
 530                           self.failUnlessEqual(sorted(metadata.keys()),
 531                                                ["ctime", "mtime"]))
 532             d.addCallback(lambda res: n.get_metadata_for(u"f2"))
 533             d.addCallback(lambda metadata: self.failUnlessEqual(metadata, {}))
 534             d.addCallback(lambda res: n.get_metadata_for(u"f3"))
 535             d.addCallback(lambda metadata:
 536                           self.failUnlessEqual(metadata, {"key": "value"}))
 537
 538             d.addCallback(lambda res: n.delete(u"f1"))
 539             d.addCallback(lambda res: n.delete(u"f2"))
 540             d.addCallback(lambda res: n.delete(u"f3"))
 541
 542
 543             d.addCallback(lambda res:
 544                           n.set_metadata_for(u"child",
 545                                              {"tags": ["web2.0-compatible"]}))
 546             d.addCallback(lambda n1: n1.get_metadata_for(u"child"))
 547             d.addCallback(lambda metadata:
 548                           self.failUnlessEqual(metadata,
 549                                                {"tags": ["web2.0-compatible"]}))
 550
 551             def _start(res):
 552                 self._start_timestamp = time.time()
 553             d.addCallback(_start)
 554             # simplejson-1.7.1 (as shipped on Ubuntu 'gutsy') rounds all
 555             # floats to hundredeths (it uses str(num) instead of repr(num)).
 556             # simplejson-1.7.3 does not have this bug. To prevent this bug
 557             # from causing the test to fail, stall for more than a few
 558             # hundrededths of a second.
 559             d.addCallback(self.stall, 0.1)
 560             d.addCallback(lambda res: n.add_file(u"timestamps",
 561                                                  upload.Data("stamp me", convergence="some convergence string")))
 562             d.addCallback(self.stall, 0.1)
 563             def _stop(res):
 564                 self._stop_timestamp = time.time()
 565             d.addCallback(_stop)
 566
 567             d.addCallback(lambda res: n.get_metadata_for(u"timestamps"))
 568             def _check_timestamp1(metadata):
 569                 self.failUnless("ctime" in metadata)
 570                 self.failUnless("mtime" in metadata)
 571                 self.failUnlessGreaterOrEqualThan(metadata["ctime"],
 572                                                   self._start_timestamp)
 573                 self.failUnlessGreaterOrEqualThan(self._stop_timestamp,
 574                                                   metadata["ctime"])
 575                 self.failUnlessGreaterOrEqualThan(metadata["mtime"],
 576                                                   self._start_timestamp)
 577                 self.failUnlessGreaterOrEqualThan(self._stop_timestamp,
 578                                                   metadata["mtime"])
 579                 # Our current timestamp rules say that replacing an existing
 580                 # child should preserve the 'ctime' but update the mtime
 581                 self._old_ctime = metadata["ctime"]
 582                 self._old_mtime = metadata["mtime"]
 583             d.addCallback(_check_timestamp1)
 584             d.addCallback(self.stall, 2.0) # accomodate low-res timestamps
 585             d.addCallback(lambda res: n.set_node(u"timestamps", n))
 586             d.addCallback(lambda res: n.get_metadata_for(u"timestamps"))
 587             def _check_timestamp2(metadata):
 588                 self.failUnlessEqual(metadata["ctime"], self._old_ctime,
 589                                      "%s != %s" % (metadata["ctime"],
 590                                                    self._old_ctime))
 591                 self.failUnlessGreaterThan(metadata["mtime"], self._old_mtime)
 592                 return n.delete(u"timestamps")
 593             d.addCallback(_check_timestamp2)
 594
 595             # also make sure we can add/update timestamps on a
 596             # previously-existing child that didn't have any, since there are
 597             # a lot of 0.7.0-generated edges around out there
 598             d.addCallback(lambda res: n.set_node(u"no_timestamps", n, {}))
 599             d.addCallback(lambda res: n.set_node(u"no_timestamps", n))
 600             d.addCallback(lambda res: n.get_metadata_for(u"no_timestamps"))
 601             d.addCallback(lambda metadata:
 602                           self.failUnlessEqual(sorted(metadata.keys()),
 603                                                ["ctime", "mtime"]))
 604             d.addCallback(lambda res: n.delete(u"no_timestamps"))
 605
 606             d.addCallback(lambda res: n.delete(u"subdir"))
 607             d.addCallback(lambda old_child:
 608                           self.failUnlessEqual(old_child.get_uri(),
 609                                                self.subdir.get_uri()))
 610
 611             d.addCallback(lambda res: n.list())
 612             d.addCallback(lambda children:
 613                           self.failUnlessEqual(sorted(children.keys()),
 614                                                sorted([u"child"])))
 615
 616             uploadable = upload.Data("some data", convergence="some convergence string")
 617             d.addCallback(lambda res: n.add_file(u"newfile", uploadable))
 618             d.addCallback(lambda newnode:
 619                           self.failUnless(IFileNode.providedBy(newnode)))
 620             other_uploadable = upload.Data("some data", convergence="stuff")
 621             d.addCallback(lambda res:
 622                           self.shouldFail(ExistingChildError, "add_file-no",
 623                                           "child 'newfile' already exists",
 624                                           n.add_file, u"newfile",
 625                                           other_uploadable,
 626                                           overwrite=False))
 627             d.addCallback(lambda res: n.list())
 628             d.addCallback(lambda children:
 629                           self.failUnlessEqual(sorted(children.keys()),
 630                                                sorted([u"child", u"newfile"])))
 631             d.addCallback(lambda res: n.get_metadata_for(u"newfile"))
 632             d.addCallback(lambda metadata:
 633                           self.failUnlessEqual(sorted(metadata.keys()),
 634                                                ["ctime", "mtime"]))
 635
 636             d.addCallback(lambda res: n.add_file(u"newfile-metadata",
 637                                                  uploadable,
 638                                                  {"key": "value"}))
 639             d.addCallback(lambda newnode:
 640                           self.failUnless(IFileNode.providedBy(newnode)))
 641             d.addCallback(lambda res: n.get_metadata_for(u"newfile-metadata"))
 642             d.addCallback(lambda metadata:
 643                           self.failUnlessEqual(metadata, {"key": "value"}))
 644             d.addCallback(lambda res: n.delete(u"newfile-metadata"))
 645
 646             d.addCallback(lambda res: n.create_empty_directory(u"subdir2"))
 647             def _created2(subdir2):
 648                 self.subdir2 = subdir2
 649                 # put something in the way, to make sure it gets overwritten
 650                 return subdir2.add_file(u"child", upload.Data("overwrite me",
 651                                                               "converge"))
 652             d.addCallback(_created2)
 653
 654             d.addCallback(lambda res:
 655                           n.move_child_to(u"child", self.subdir2))
 656             d.addCallback(lambda res: n.list())
 657             d.addCallback(lambda children:
 658                           self.failUnlessEqual(sorted(children.keys()),
 659                                                sorted([u"newfile", u"subdir2"])))
 660             d.addCallback(lambda res: self.subdir2.list())
 661             d.addCallback(lambda children:
 662                           self.failUnlessEqual(sorted(children.keys()),
 663                                                sorted([u"child"])))
 664             d.addCallback(lambda res: self.subdir2.get(u"child"))
 665             d.addCallback(lambda child:
 666                           self.failUnlessEqual(child.get_uri(),
 667                                                fake_file_uri.to_string()))
 668
 669             # move it back, using new_child_name=
 670             d.addCallback(lambda res:
 671                           self.subdir2.move_child_to(u"child", n, u"newchild"))
 672             d.addCallback(lambda res: n.list())
 673             d.addCallback(lambda children:
 674                           self.failUnlessEqual(sorted(children.keys()),
 675                                                sorted([u"newchild", u"newfile",
 676                                                        u"subdir2"])))
 677             d.addCallback(lambda res: self.subdir2.list())
 678             d.addCallback(lambda children:
 679                           self.failUnlessEqual(sorted(children.keys()), []))
 680
 681             # now make sure that we honor overwrite=False
 682             d.addCallback(lambda res:
 683                           self.subdir2.set_uri(u"newchild", other_file_uri))
 684
 685             d.addCallback(lambda res:
 686                           self.shouldFail(ExistingChildError, "move_child_to-no",
 687                                           "child 'newchild' already exists",
 688                                           n.move_child_to, u"newchild",
 689                                           self.subdir2,
 690                                           overwrite=False))
 691             d.addCallback(lambda res: self.subdir2.get(u"newchild"))
 692             d.addCallback(lambda child:
 693                           self.failUnlessEqual(child.get_uri(),
 694                                                other_file_uri.to_string()))
 695
 696             return d
 697
 698         d.addCallback(_then)
 699
 700         return d
 701
 702 class DeepStats(unittest.TestCase):
 703     def test_stats(self):
 704         ds = dirnode.DeepStats(None)
 705         ds.add("count-files")
 706         ds.add("size-immutable-files", 123)
 707         ds.histogram("size-files-histogram", 123)
 708         ds.max("largest-directory", 444)
 709
 710         s = ds.get_results()
 711         self.failUnlessEqual(s["count-files"], 1)
 712         self.failUnlessEqual(s["size-immutable-files"], 123)
 713         self.failUnlessEqual(s["largest-directory"], 444)
 714         self.failUnlessEqual(s["count-literal-files"], 0)
 715
 716         ds.add("count-files")
 717         ds.add("size-immutable-files", 321)
 718         ds.histogram("size-files-histogram", 321)
 719         ds.max("largest-directory", 2)
 720
 721         s = ds.get_results()
 722         self.failUnlessEqual(s["count-files"], 2)
 723         self.failUnlessEqual(s["size-immutable-files"], 444)
 724         self.failUnlessEqual(s["largest-directory"], 444)
 725         self.failUnlessEqual(s["count-literal-files"], 0)
 726         self.failUnlessEqual(s["size-files-histogram"],
 727                              [ (101, 316, 1), (317, 1000, 1) ])
 728
 729         ds = dirnode.DeepStats(None)
 730         for i in range(1, 1100):
 731             ds.histogram("size-files-histogram", i)
 732         ds.histogram("size-files-histogram", 4*1000*1000*1000*1000) # 4TB
 733         s = ds.get_results()
 734         self.failUnlessEqual(s["size-files-histogram"],
 735                              [ (1, 3, 3),
 736                                (4, 10, 7),
 737                                (11, 31, 21),
 738                                (32, 100, 69),
 739                                (101, 316, 216),
 740                                (317, 1000, 684),
 741                                (1001, 3162, 99),
 742                                (3162277660169L, 10000000000000L, 1),
 743                                ])
 744