From: Brian Warner Date: Tue, 22 May 2012 22:18:26 +0000 (-0700) Subject: test_web.py: fix memory leak when run with --until-failure X-Git-Url: https://git.rkrishnan.org/%5B/frontends/%22news.html/cyclelanguage?a=commitdiff_plain;h=bfee999e20aa9fdc0b05c7d72cf11077cb319d78;p=tahoe-lafs%2Ftahoe-lafs.git test_web.py: fix memory leak when run with --until-failure The Fake*Node classes in test/common.py were accumulating share data in a class-level dictionary, which persisted from one test run to the next. As a result, running test_web.py over and over (with trial's --until-failure feature) made this dictionary grow without bound, eventually running out of memory. This fix moves that dictionary into the FakeClient built fresh for each test, so it doesn't build up. It does the same thing for "file_types", which was much smaller but still lived at the class level. Closes #1729 --- diff --git a/src/allmydata/test/common.py b/src/allmydata/test/common.py index a914baa8..77b1d08c 100644 --- a/src/allmydata/test/common.py +++ b/src/allmydata/test/common.py @@ -6,7 +6,7 @@ from twisted.python import failure from twisted.application import service from twisted.web.error import Error as WebError from foolscap.api import flushEventualQueue, fireEventually -from allmydata import uri, dirnode, client +from allmydata import uri, client from allmydata.introducer.server import IntroducerNode from allmydata.interfaces import IMutableFileNode, IImmutableFileNode,\ NotEnoughSharesError, ICheckable, \ @@ -43,10 +43,10 @@ class FakeCHKFileNode: """I provide IImmutableFileNode, but all of my data is stored in a class-level dictionary.""" implements(IImmutableFileNode) - all_contents = {} - def __init__(self, filecap): + def __init__(self, filecap, all_contents): precondition(isinstance(filecap, (uri.CHKFileURI, uri.LiteralFileURI)), filecap) + self.all_contents = all_contents self.my_uri = filecap self.storage_index = self.my_uri.get_storage_index() @@ -167,10 +167,10 @@ def make_chk_file_cap(size): def make_chk_file_uri(size): return make_chk_file_cap(size).to_string() -def create_chk_filenode(contents): +def create_chk_filenode(contents, all_contents): filecap = make_chk_file_cap(len(contents)) - n = FakeCHKFileNode(filecap) - FakeCHKFileNode.all_contents[filecap.to_string()] = contents + n = FakeCHKFileNode(filecap, all_contents) + all_contents[filecap.to_string()] = contents return n @@ -180,11 +180,11 @@ class FakeMutableFileNode: implements(IMutableFileNode, ICheckable) MUTABLE_SIZELIMIT = 10000 - all_contents = {} - file_types = {} # storage index => MDMF_VERSION or SDMF_VERSION def __init__(self, storage_broker, secret_holder, - default_encoding_parameters, history): + default_encoding_parameters, history, all_contents): + self.all_contents = all_contents + self.file_types = {} # storage index => MDMF_VERSION or SDMF_VERSION self.init_from_cap(make_mutable_file_cap()) self._k = default_encoding_parameters['k'] self._segsize = default_encoding_parameters['max_segment_size'] @@ -402,7 +402,7 @@ def make_verifier_uri(): return uri.SSKVerifierURI(storage_index=os.urandom(16), fingerprint=os.urandom(32)).to_string() -def create_mutable_filenode(contents, mdmf=False): +def create_mutable_filenode(contents, mdmf=False, all_contents=None): # XXX: All of these arguments are kind of stupid. if mdmf: cap = make_mdmf_mutable_file_cap() @@ -413,7 +413,8 @@ def create_mutable_filenode(contents, mdmf=False): encoding_params['k'] = 3 encoding_params['max_segment_size'] = 128*1024 - filenode = FakeMutableFileNode(None, None, encoding_params, None) + filenode = FakeMutableFileNode(None, None, encoding_params, None, + all_contents) filenode.init_from_cap(cap) if mdmf: filenode.create(MutableData(contents), version=MDMF_VERSION) @@ -422,14 +423,6 @@ def create_mutable_filenode(contents, mdmf=False): return filenode -class FakeDirectoryNode(dirnode.DirectoryNode): - """This offers IDirectoryNode, but uses a FakeMutableFileNode for the - backing store, so it doesn't go to the grid. The child data is still - encrypted and serialized, so this isn't useful for tests that want to - look inside the dirnodes and check their contents. - """ - filenode_class = FakeMutableFileNode - class LoggingServiceParent(service.MultiService): def log(self, *args, **kwargs): return log.msg(*args, **kwargs) diff --git a/src/allmydata/test/test_web.py b/src/allmydata/test/test_web.py index ca3c85f0..b99b9bb5 100644 --- a/src/allmydata/test/test_web.py +++ b/src/allmydata/test/test_web.py @@ -64,16 +64,17 @@ class FakeNodeMaker(NodeMaker): 'max_segment_size':128*1024 # 1024=KiB } def _create_lit(self, cap): - return FakeCHKFileNode(cap) + return FakeCHKFileNode(cap, self.all_contents) def _create_immutable(self, cap): - return FakeCHKFileNode(cap) + return FakeCHKFileNode(cap, self.all_contents) def _create_mutable(self, cap): - return FakeMutableFileNode(None, - None, - self.encoding_params, None).init_from_cap(cap) + return FakeMutableFileNode(None, None, + self.encoding_params, None, + self.all_contents).init_from_cap(cap) def create_mutable_file(self, contents="", keysize=None, version=SDMF_VERSION): - n = FakeMutableFileNode(None, None, self.encoding_params, None) + n = FakeMutableFileNode(None, None, self.encoding_params, None, + self.all_contents) return n.create(contents, version=version) class FakeUploader(service.Service): @@ -83,7 +84,7 @@ class FakeUploader(service.Service): d.addCallback(lambda size: uploadable.read(size)) def _got_data(datav): data = "".join(datav) - n = create_chk_filenode(data) + n = create_chk_filenode(data, self.all_contents) ur = upload.UploadResults(file_size=len(data), ciphertext_fetched=0, preexisting_shares=0, @@ -176,6 +177,7 @@ class FakeClient(Client): # don't upcall to Client.__init__, since we only want to initialize a # minimal subset service.MultiService.__init__(self) + self.all_contents = {} self.nodeid = "fake_nodeid" self.nickname = "fake_nickname" self.introducer_furl = "None" @@ -187,11 +189,13 @@ class FakeClient(Client): self.introducer_client = None self.history = FakeHistory() self.uploader = FakeUploader() + self.uploader.all_contents = self.all_contents self.uploader.setServiceParent(self) self.blacklist = None self.nodemaker = FakeNodeMaker(None, self._secret_holder, None, self.uploader, None, None, None, None) + self.nodemaker.all_contents = self.all_contents self.mutable_file_default = SDMF_VERSION def startService(self): @@ -270,7 +274,7 @@ class WebMixin(object): _ign, n, self._bad_file_uri = self.makefile(3) # this uri should not be downloadable - del FakeCHKFileNode.all_contents[self._bad_file_uri] + del self.s.all_contents[self._bad_file_uri] rodir = res[5][1] self.public_root.set_uri(u"reedownlee", rodir.get_readonly_uri(), @@ -297,14 +301,17 @@ class WebMixin(object): d.addCallback(_got_metadata) return d + def get_all_contents(self): + return self.s.all_contents + def makefile(self, number): contents = "contents of file %s\n" % number - n = create_chk_filenode(contents) + n = create_chk_filenode(contents, self.get_all_contents()) return contents, n, n.get_uri() def makefile_mutable(self, number, mdmf=False): contents = "contents of mutable file %s\n" % number - n = create_mutable_filenode(contents, mdmf) + n = create_mutable_filenode(contents, mdmf, self.s.all_contents) return contents, n, n.get_uri(), n.get_readonly_uri() def tearDown(self): @@ -1997,7 +2004,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixi return d def failUnlessCHKURIHasContents(self, got_uri, contents): - self.failUnless(FakeCHKFileNode.all_contents[got_uri] == contents) + self.failUnless(self.get_all_contents()[got_uri] == contents) def test_POST_upload(self): d = self.POST(self.public_url + "/foo", t="upload", @@ -2100,7 +2107,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixi self.failUnless(filecap.startswith("URI:SSK:"), filecap) self.filecap = filecap u = uri.WriteableSSKFileURI.init_from_string(filecap) - self.failUnlessIn(u.get_storage_index(), FakeMutableFileNode.all_contents) + self.failUnlessIn(u.get_storage_index(), self.get_all_contents()) n = self.s.create_node_from_uri(filecap) return n.download_best_version() d.addCallback(_check) @@ -2929,7 +2936,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixi def _create_immutable_children(self): contents, n, filecap1 = self.makefile(12) md1 = {"metakey1": "metavalue1"} - tnode = create_chk_filenode("immutable directory contents\n"*10) + tnode = create_chk_filenode("immutable directory contents\n"*10, + self.get_all_contents()) dnode = DirectoryNode(tnode, None, None) assert not dnode.is_mutable() immdircap = dnode.get_uri() @@ -3724,8 +3732,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixi d = self.PUT("/uri", file_contents) def _check(uri): assert isinstance(uri, str), uri - self.failUnlessIn(uri, FakeCHKFileNode.all_contents) - self.failUnlessReallyEqual(FakeCHKFileNode.all_contents[uri], + self.failUnlessIn(uri, self.get_all_contents()) + self.failUnlessReallyEqual(self.get_all_contents()[uri], file_contents) return self.GET("/uri/%s" % uri) d.addCallback(_check) @@ -3739,8 +3747,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixi d = self.PUT("/uri?mutable=false", file_contents) def _check(uri): assert isinstance(uri, str), uri - self.failUnlessIn(uri, FakeCHKFileNode.all_contents) - self.failUnlessReallyEqual(FakeCHKFileNode.all_contents[uri], + self.failUnlessIn(uri, self.get_all_contents()) + self.failUnlessReallyEqual(self.get_all_contents()[uri], file_contents) return self.GET("/uri/%s" % uri) d.addCallback(_check) @@ -3765,7 +3773,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixi self.failUnless(filecap.startswith("URI:SSK:"), filecap) self.filecap = filecap u = uri.WriteableSSKFileURI.init_from_string(filecap) - self.failUnlessIn(u.get_storage_index(), FakeMutableFileNode.all_contents) + self.failUnlessIn(u.get_storage_index(), self.get_all_contents()) n = self.s.create_node_from_uri(filecap) return n.download_best_version() d.addCallback(_check1)