def test_delete(self):
cache = arvados_fuse.InodeCache(1000, 4)
inodes = arvados_fuse.Inodes(cache)
ent1 = mock.MagicMock()
ent1.in_use.return_value = False
ent1.has_ref.return_value = False
ent1.persisted.return_value = True
ent1.objsize.return_value = 500
inodes.add_entry(ent1)
ent3 = mock.MagicMock()
ent3.in_use.return_value = False
ent3.has_ref.return_value = False
ent3.persisted.return_value = True
ent3.objsize.return_value = 600
# Delete ent1
self.assertEqual(500, cache.total())
ent1.ref_count = 0
with llfuse.lock:
inodes.del_entry(ent1)
self.assertEqual(0, cache.total())
cache.touch(ent3)
self.assertEqual(600, cache.total())
def test_inodes_basic(self):
cache = arvados_fuse.InodeCache(1000, 4)
inodes = arvados_fuse.Inodes(cache)
# Check that ent1 gets added to inodes
ent1 = mock.MagicMock()
ent1.in_use.return_value = False
ent1.has_ref.return_value = False
ent1.persisted.return_value = True
ent1.objsize.return_value = 500
inodes.add_entry(ent1)
self.assertIn(ent1.inode, inodes)
self.assertIs(inodes[ent1.inode], ent1)
self.assertEqual(500, cache.total())
def test_inodes_not_persisted(self):
cache = arvados_fuse.InodeCache(1000, 4)
inodes = arvados_fuse.Inodes(cache)
ent1 = mock.MagicMock()
ent1.in_use.return_value = False
ent1.persisted.return_value = True
ent1.clear.return_value = True
ent1.objsize.return_value = 500
inodes.add_entry(ent1)
# ent2 is not persisted, so it doesn't
# affect the cache total
ent2 = mock.MagicMock()
ent2.in_use.return_value = False
ent2.persisted.return_value = False
ent2.objsize.return_value = 600
inodes.add_entry(ent2)
self.assertEqual(500, cache.total())
def test_clear_false(self):
cache = arvados_fuse.InodeCache(1000, 4)
inodes = arvados_fuse.Inodes(cache)
ent1 = mock.MagicMock()
ent1.in_use.return_value = False
ent1.persisted.return_value = True
ent1.clear.return_value = True
ent1.objsize.return_value = 500
inodes.add_entry(ent1)
ent3 = mock.MagicMock()
ent3.in_use.return_value = False
ent3.persisted.return_value = True
ent3.objsize.return_value = 600
ent3.clear.return_value = True
inodes.add_entry(ent3)
cache.min_entries = 1
# ent1, ent3 clear return false, can't be cleared
ent1.clear.return_value = False
ent3.clear.return_value = False
ent1.clear.called = False
ent3.clear.called = False
self.assertFalse(ent1.clear.called)
self.assertFalse(ent3.clear.called)
cache.touch(ent3)
self.assertTrue(ent1.clear.called)
self.assertTrue(ent3.clear.called)
self.assertEqual(1100, cache.total())
# ent1 clear return false, so ent3
# gets cleared
ent1.clear.return_value = False
ent3.clear.return_value = True
ent1.clear.called = False
ent3.clear.called = False
cache.touch(ent3)
self.assertTrue(ent1.clear.called)
self.assertTrue(ent3.clear.called)
self.assertEqual(500, cache.total())
def test_clear_in_use(self):
cache = arvados_fuse.InodeCache(1000, 4)
inodes = arvados_fuse.Inodes(cache)
ent1 = mock.MagicMock()
ent1.in_use.return_value = True
ent1.has_ref.return_value = False
ent1.persisted.return_value = True
ent1.objsize.return_value = 500
inodes.add_entry(ent1)
ent3 = mock.MagicMock()
ent3.in_use.return_value = False
ent3.has_ref.return_value = True
ent3.persisted.return_value = True
ent3.objsize.return_value = 600
inodes.add_entry(ent3)
cache.min_entries = 1
# ent1, ent3 in use, has ref, can't be cleared
ent1.clear.called = False
ent3.clear.called = False
self.assertFalse(ent1.clear.called)
self.assertFalse(ent3.clear.called)
cache.touch(ent3)
self.assertFalse(ent1.clear.called)
self.assertFalse(ent3.clear.called)
self.assertTrue(ent3.kernel_invalidate.called)
self.assertEqual(1100, cache.total())
# ent1 still in use, ent3 doesn't have ref,
# so ent3 gets cleared
ent3.has_ref.return_value = False
ent1.clear.called = False
ent3.clear.called = False
cache.touch(ent3)
self.assertFalse(ent1.clear.called)
self.assertTrue(ent3.clear.called)
self.assertEqual(500, cache.total())
def test_inode_cleared(self):
cache = arvados_fuse.InodeCache(1000, 4)
inodes = arvados_fuse.Inodes(cache)
# Check that ent1 gets added to inodes
ent1 = mock.MagicMock()
ent1.in_use.return_value = False
ent1.has_ref.return_value = False
ent1.persisted.return_value = True
ent1.objsize.return_value = 500
inodes.add_entry(ent1)
# ent3 is persisted, adding it should cause ent1 to get cleared
ent3 = mock.MagicMock()
ent3.in_use.return_value = False
ent3.has_ref.return_value = False
ent3.persisted.return_value = True
ent3.objsize.return_value = 600
self.assertFalse(ent1.clear.called)
inodes.add_entry(ent3)
# Won't clear anything because min_entries = 4
self.assertEqual(2, len(cache._entries))
self.assertFalse(ent1.clear.called)
self.assertEqual(1100, cache.total())
# Change min_entries
cache.min_entries = 1
cache.cap_cache()
self.assertEqual(600, cache.total())
self.assertTrue(ent1.clear.called)
# Touching ent1 should cause ent3 to get cleared
self.assertFalse(ent3.clear.called)
cache.touch(ent1)
self.assertTrue(ent3.clear.called)
self.assertEqual(500, cache.total())
