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# Copyright 2010 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import shutil
import stat
import tempfile
import time
import unittest
import obnamlib
class ClientMetadataTreeTests(unittest.TestCase):
def current_time(self):
return time.time() if self.now is None else self.now
def setUp(self):
self.now = None
self.tempdir = tempfile.mkdtemp()
fs = obnamlib.LocalFS(self.tempdir)
self.hooks = obnamlib.HookManager()
self.hooks.new('repository-toplevel-init')
self.client = obnamlib.ClientMetadataTree(fs, 'clientid',
obnamlib.DEFAULT_NODE_SIZE,
obnamlib.DEFAULT_UPLOAD_QUEUE_SIZE,
obnamlib.DEFAULT_LRU_SIZE, self)
self.file_size = 123
self.file_metadata = obnamlib.Metadata(st_mode=stat.S_IFREG | 0666,
st_size=self.file_size)
self.file_encoded = obnamlib.fmt_6.metadata_codec.encode_metadata(
self.file_metadata)
def tearDown(self):
shutil.rmtree(self.tempdir)
def test_has_not_current_generation_initially(self):
self.assertEqual(self.client.tree, None)
def test_lists_no_generations_initially(self):
self.assertEqual(self.client.list_generations(), [])
def test_starts_generation(self):
self.now = 12765
self.client.start_generation()
self.assertNotEqual(self.client.tree, None)
def lookup(x):
key = self.client.genkey(x)
return self.client._lookup_int(self.client.tree, key)
genid = self.client.get_generation_id(self.client.tree)
self.assertEqual(lookup(self.client.GEN_ID), genid)
self.assertFalse(self.client.get_is_checkpoint(genid))
def test_starts_second_generation(self):
self.now = 1
self.client.start_generation()
genid1 = self.client.get_generation_id(self.client.tree)
self.client.commit()
self.assertEqual(self.client.tree, None)
self.now = 2
self.client.start_generation()
self.assertNotEqual(self.client.tree, None)
def lookup(x):
key = self.client.genkey(x)
return self.client._lookup_int(self.client.tree, key)
genid2 = self.client.get_generation_id(self.client.tree)
self.assertEqual(lookup(self.client.GEN_ID), genid2)
self.assertNotEqual(genid1, genid2)
self.assertFalse(self.client.get_is_checkpoint(genid2))
self.assertEqual(self.client.list_generations(), [genid1, genid2])
def test_sets_is_checkpoint(self):
self.client.start_generation()
genid = self.client.get_generation_id(self.client.tree)
self.client.set_current_generation_is_checkpoint(True)
self.assert_(self.client.get_is_checkpoint(genid))
def test_unsets_is_checkpoint(self):
self.client.start_generation()
genid = self.client.get_generation_id(self.client.tree)
self.client.set_current_generation_is_checkpoint(True)
self.client.set_current_generation_is_checkpoint(False)
self.assertFalse(self.client.get_is_checkpoint(genid))
def test_removes_generation(self):
self.client.start_generation()
self.client.commit()
genid = self.client.list_generations()[0]
self.client.remove_generation(genid)
self.assertEqual(self.client.list_generations(), [])
def test_removes_started_generation(self):
self.client.start_generation()
self.client.remove_generation(self.client.list_generations()[0])
self.assertEqual(self.client.list_generations(), [])
self.assertEqual(self.client.tree, None)
def test_finds_generation_the_first_time(self):
self.client.start_generation()
tree = self.client.tree
genid = self.client.get_generation_id(tree)
self.client.commit()
self.assertEqual(self.client.find_generation(genid), tree)
def test_finds_generation_the_second_time(self):
self.client.start_generation()
tree = self.client.tree
genid = self.client.get_generation_id(tree)
self.client.commit()
self.client.find_generation(genid)
self.assertEqual(self.client.find_generation(genid), tree)
def test_find_generation_raises_keyerror_for_empty_forest(self):
self.client.init_forest()
self.assertRaises(KeyError, self.client.find_generation, 0)
def test_find_generation_raises_keyerror_for_unknown_generation(self):
self.assertRaises(KeyError, self.client.find_generation, 0)
class ClientMetadataTreeFileOpsTests(unittest.TestCase):
def current_time(self):
return time.time() if self.now is None else self.now
def setUp(self):
self.now = None
self.tempdir = tempfile.mkdtemp()
fs = obnamlib.LocalFS(self.tempdir)
self.hooks = obnamlib.HookManager()
self.hooks.new('repository-toplevel-init')
self.client = obnamlib.ClientMetadataTree(fs, 'clientid',
obnamlib.DEFAULT_NODE_SIZE,
obnamlib.DEFAULT_UPLOAD_QUEUE_SIZE,
obnamlib.DEFAULT_LRU_SIZE,
self)
# Force use of filename hash collisions.
self.client.default_file_id = self.client._bad_default_file_id
self.client.start_generation()
self.clientid = self.client.get_generation_id(self.client.tree)
self.file_metadata = obnamlib.Metadata(st_mode=stat.S_IFREG | 0666)
self.file_encoded = obnamlib.fmt_6.metadata_codec.encode_metadata(
self.file_metadata)
self.dir_metadata = obnamlib.Metadata(st_mode=stat.S_IFDIR | 0777)
self.dir_encoded = obnamlib.fmt_6.metadata_codec.encode_metadata(
self.dir_metadata)
def tearDown(self):
shutil.rmtree(self.tempdir)
def test_has_empty_root_initially(self):
self.assertEqual(self.client.listdir(self.clientid, '/'), [])
def test_has_no_metadata_initially(self):
self.assertRaises(KeyError, self.client.get_metadata, self.clientid,
'/foo')
def test_sets_metadata(self):
self.client.set_metadata('/foo', self.file_encoded)
self.assertEqual(self.client.get_metadata(self.clientid, '/foo'),
self.file_encoded)
def test_creates_file_at_root(self):
self.client.create('/foo', self.file_encoded)
self.assertEqual(self.client.listdir(self.clientid, '/'), ['foo'])
self.assertEqual(self.client.get_metadata(self.clientid, '/foo'),
self.file_encoded)
def test_removes_file_at_root(self):
self.client.create('/foo', self.file_encoded)
self.client.remove('/foo')
self.assertEqual(self.client.listdir(self.clientid, '/'), [])
self.assertRaises(KeyError, self.client.get_metadata,
self.clientid, '/foo')
def test_creates_directory_at_root(self):
self.client.create('/foo', self.dir_encoded)
self.assertEqual(self.client.listdir(self.clientid, '/'), ['foo'])
self.assertEqual(self.client.get_metadata(self.clientid, '/foo'),
self.dir_encoded)
def test_removes_directory_at_root(self):
self.client.create('/foo', self.dir_encoded)
self.client.remove('/foo')
self.assertEqual(self.client.listdir(self.clientid, '/'), [])
self.assertRaises(KeyError, self.client.get_metadata,
self.clientid, '/foo')
def test_creates_directory_and_files_and_subdirs(self):
self.client.create('/foo', self.dir_encoded)
self.client.create('/foo/foobar', self.file_encoded)
self.client.create('/foo/bar', self.dir_encoded)
self.client.create('/foo/bar/baz', self.file_encoded)
self.assertEqual(self.client.listdir(self.clientid, '/'), ['foo'])
self.assertEqual(sorted(self.client.listdir(self.clientid, '/foo')),
['bar', 'foobar'])
self.assertEqual(self.client.listdir(self.clientid, '/foo/bar'),
['baz'])
self.assertEqual(self.client.get_metadata(self.clientid, '/foo'),
self.dir_encoded)
self.assertEqual(self.client.get_metadata(self.clientid, '/foo/bar'),
self.dir_encoded)
self.assertEqual(self.client.get_metadata(self.clientid, '/foo/foobar'),
self.file_encoded)
self.assertEqual(self.client.get_metadata(self.clientid,
'/foo/bar/baz'),
self.file_encoded)
def test_removes_directory_and_files_and_subdirs(self):
self.client.create('/foo', self.dir_encoded)
self.client.create('/foo/foobar', self.file_encoded)
self.client.create('/foo/bar', self.dir_encoded)
self.client.create('/foo/bar/baz', self.file_encoded)
self.client.remove('/foo')
self.assertEqual(self.client.listdir(self.clientid, '/'), [])
self.assertRaises(KeyError, self.client.get_metadata,
self.clientid, '/foo')
self.assertRaises(KeyError, self.client.get_metadata,
self.clientid, '/foo/foobar')
self.assertRaises(KeyError, self.client.get_metadata,
self.clientid, '/foo/bar')
self.assertRaises(KeyError, self.client.get_metadata,
self.clientid, '/foo/bar/baz')
def test_has_no_file_chunks_initially(self):
self.assertEqual(self.client.get_file_chunks(self.clientid, '/foo'), [])
def test_sets_file_chunks(self):
self.client.set_file_chunks('/foo', [1, 2, 3])
self.assertEqual(self.client.get_file_chunks(self.clientid, '/foo'),
[1, 2, 3])
def test_appends_file_chunks_to_empty_list(self):
self.client.append_file_chunks('/foo', [1, 2, 3])
self.assertEqual(self.client.get_file_chunks(self.clientid, '/foo'),
[1, 2, 3])
def test_appends_file_chunks_to_nonempty_list(self):
self.client.set_file_chunks('/foo', [1, 2, 3])
self.client.append_file_chunks('/foo', [4, 5, 6])
self.assertEqual(self.client.get_file_chunks(self.clientid, '/foo'),
[1, 2, 3, 4, 5, 6])
def test_generation_has_no_chunk_refs_initially(self):
minkey = self.client.chunk_key(0, 0)
maxkey = self.client.chunk_key(obnamlib.MAX_ID, obnamlib.MAX_ID)
self.assertEqual(list(self.client.tree.lookup_range(minkey, maxkey)),
[])
def test_generation_has_no_chunk_refs_initially(self):
minkey = self.client.chunk_key(0, 0)
maxkey = self.client.chunk_key(obnamlib.MAX_ID, obnamlib.MAX_ID)
self.assertEqual(list(self.client.tree.lookup_range(minkey, maxkey)),
[])
def test_sets_file_chunks(self):
self.client.set_file_chunks('/foo', [1, 2, 3])
self.assertEqual(self.client.get_file_chunks(self.clientid, '/foo'),
[1, 2, 3])
def test_generation_has_no_chunk_refs_initially(self):
minkey = self.client.chunk_key(0, 0)
maxkey = self.client.chunk_key(obnamlib.MAX_ID, obnamlib.MAX_ID)
self.assertEqual(list(self.client.tree.lookup_range(minkey, maxkey)),
[])
def test_set_file_chunks_adds_chunk_refs(self):
self.client.set_file_chunks('/foo', [1, 2])
file_id = self.client.get_file_id(self.client.tree, '/foo')
minkey = self.client.chunk_key(0, 0)
maxkey = self.client.chunk_key(obnamlib.MAX_ID, obnamlib.MAX_ID)
self.assertEqual(set(self.client.tree.lookup_range(minkey, maxkey)),
set([(self.client.chunk_key(1, file_id), ''),
(self.client.chunk_key(2, file_id), '')]))
def test_set_file_chunks_removes_now_unused_chunk_refs(self):
self.client.set_file_chunks('/foo', [1, 2])
self.client.set_file_chunks('/foo', [1])
file_id = self.client.get_file_id(self.client.tree, '/foo')
minkey = self.client.chunk_key(0, 0)
maxkey = self.client.chunk_key(obnamlib.MAX_ID, obnamlib.MAX_ID)
self.assertEqual(list(self.client.tree.lookup_range(minkey, maxkey)),
[(self.client.chunk_key(1, file_id), '')])
def test_remove_removes_chunk_refs(self):
self.client.set_file_chunks('/foo', [1, 2])
self.client.remove('/foo')
minkey = self.client.chunk_key(0, 0)
maxkey = self.client.chunk_key(obnamlib.MAX_ID, obnamlib.MAX_ID)
self.assertEqual(list(self.client.tree.lookup_range(minkey, maxkey)),
[])
def test_report_chunk_not_in_use_initially(self):
gen_id = self.client.get_generation_id(self.client.tree)
self.assertFalse(self.client.chunk_in_use(gen_id, 0))
def test_report_chunk_in_use_after_it_is(self):
gen_id = self.client.get_generation_id(self.client.tree)
self.client.set_file_chunks('/foo', [0])
self.assertTrue(self.client.chunk_in_use(gen_id, 0))
def test_lists_no_chunks_in_generation_initially(self):
gen_id = self.client.get_generation_id(self.client.tree)
self.assertEqual(self.client.list_chunks_in_generation(gen_id), [])
def test_lists_used_chunks_in_generation(self):
gen_id = self.client.get_generation_id(self.client.tree)
self.client.set_file_chunks('/foo', [0])
self.client.set_file_chunks('/bar', [1])
self.assertEqual(set(self.client.list_chunks_in_generation(gen_id)),
set([0, 1]))
def test_lists_chunks_in_generation_only_once(self):
gen_id = self.client.get_generation_id(self.client.tree)
self.client.set_file_chunks('/foo', [0])
self.client.set_file_chunks('/bar', [0])
self.assertEqual(self.client.list_chunks_in_generation(gen_id), [0])
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