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