From: Daira Hopwood Date: Fri, 26 Apr 2013 20:57:36 +0000 (+0100) Subject: Test that share methods are called with the shareset locked. refs #1869 X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/flags/-?a=commitdiff_plain;h=bb9c2a909fc98baf441e4aed95cc88169493146c;p=tahoe-lafs%2Ftahoe-lafs.git Test that share methods are called with the shareset locked. refs #1869 Signed-off-by: Daira Hopwood --- diff --git a/src/allmydata/test/test_storage.py b/src/allmydata/test/test_storage.py index 8e3843bb..b3dd08f2 100644 --- a/src/allmydata/test/test_storage.py +++ b/src/allmydata/test/test_storage.py @@ -31,6 +31,7 @@ from allmydata.storage.backends.disk.mutable import create_mutable_disk_share, M from allmydata.storage.backends.cloud.cloud_backend import CloudBackend from allmydata.storage.backends.cloud.cloud_common import CloudError, CloudServiceError, \ ContainerItem, ContainerListing +from allmydata.storage.backends.cloud.mutable import MutableCloudShare from allmydata.storage.backends.cloud import mock_cloud, cloud_common from allmydata.storage.backends.cloud.mock_cloud import MockContainer from allmydata.storage.backends.cloud.openstack import openstack_container @@ -2630,6 +2631,48 @@ class MutableServerTest(MutableServerMixin, ShouldFailMixin): d.addCallback(_check) return d + def test_shareset_locking(self): + server = self.create("test_shareset_locking") + aa = server.get_accountant().get_anonymous_account() + rstaraw = aa.remote_slot_testv_and_readv_and_writev + read = aa.remote_slot_readv + secrets = ( self.write_enabler("we1"), + self.renew_secret("we1"), + self.cancel_secret("we1") ) + data = "".join([ ("%d" % i) * 10 for i in range(10) ]) + + # Assert that the lock is held while share methods are called. + was_called = {} + def make_patched_share_method(old_method): + def _call(*args, **kwargs): + was_called[old_method.__name__] = True + self.failUnless(server.backend._get_lock("si1").locked) + return old_method(*args, **kwargs) + return _call + + ShareClass = self.get_mutable_share_class() + _old_init_share = ShareClass.__init__ + def _init_share(share, *args, **kwargs): + _old_init_share(share, *args, **kwargs) + self.patch(share, 'readv', make_patched_share_method(share.readv)) + self.patch(share, 'writev', make_patched_share_method(share.writev)) + self.patch(share, 'check_testv', make_patched_share_method(share.check_testv)) + self.patch(ShareClass, '__init__', _init_share) + + d = self.allocate(aa, "si1", "we1", set([0,1,2]), 100) + + d.addCallback(lambda ign: rstaraw("si1", secrets, + {0: ([], [(0,data)], None)}, + [])) + d.addCallback(lambda res: self.failUnlessEqual(res, (True, {0:[],1:[],2:[]}) )) + + d.addCallback(lambda ign: read("si1", [0], [(0,10)])) + d.addCallback(lambda res: self.failUnlessEqual(res, {0: [data[:10]]})) + + d.addCallback(lambda ign: + self.failUnlessEqual(was_called, {'readv': True, 'writev': True, 'check_testv': True})) + return d + class ServerWithNullBackend(ServiceParentMixin, WorkdirMixin, ServerMixin, unittest.TestCase): def test_null_backend(self): @@ -2679,6 +2722,9 @@ class WithMockCloudBackend(ServiceParentMixin, WorkdirMixin): self.failUnlessEqual((self._container.get_load_count(), self._container.get_store_count()), (expected_load_count, expected_store_count)) + def get_mutable_share_class(self): + return MutableCloudShare + class WithDiskBackend(ServiceParentMixin, WorkdirMixin): def create(self, name, detached=False, readonly=False, reserved_space=0, klass=StorageServer): @@ -2696,6 +2742,9 @@ class WithDiskBackend(ServiceParentMixin, WorkdirMixin): def check_load_store_counts(self, expected_loads, expected_stores): pass + def get_mutable_share_class(self): + return MutableDiskShare + class ServerWithMockCloudBackend(WithMockCloudBackend, ServerTest, unittest.TestCase): def setUp(self):