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|
# Copyright (C) 2008 Canonical Ltd
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tests for pack repositories.
These tests are repeated for all pack-based repository formats.
"""
from cStringIO import StringIO
from stat import S_ISDIR
from bzrlib.index import GraphIndex, InMemoryGraphIndex
from bzrlib import (
bzrdir,
errors,
inventory,
progress,
repository,
revision as _mod_revision,
symbol_versioning,
tests,
ui,
upgrade,
workingtree,
)
from bzrlib.tests import (
TestCase,
TestCaseWithTransport,
TestNotApplicable,
TestSkipped,
)
from bzrlib.transport import (
fakenfs,
get_transport,
)
class TestPackRepository(TestCaseWithTransport):
"""Tests to be repeated across all pack-based formats.
The following are populated from the test scenario:
:ivar format_name: Registered name fo the format to test.
:ivar format_string: On-disk format marker.
:ivar format_supports_external_lookups: Boolean.
"""
def get_format(self):
return bzrdir.format_registry.make_bzrdir(self.format_name)
def test_attribute__fetch_order(self):
"""Packs do not need ordered data retrieval."""
format = self.get_format()
repo = self.make_repository('.', format=format)
self.assertEqual('unordered', repo._fetch_order)
def test_attribute__fetch_uses_deltas(self):
"""Packs reuse deltas."""
format = self.get_format()
repo = self.make_repository('.', format=format)
self.assertEqual(True, repo._fetch_uses_deltas)
def test_disk_layout(self):
format = self.get_format()
repo = self.make_repository('.', format=format)
# in case of side effects of locking.
repo.lock_write()
repo.unlock()
t = repo.bzrdir.get_repository_transport(None)
self.check_format(t)
# XXX: no locks left when unlocked at the moment
# self.assertEqualDiff('', t.get('lock').read())
self.check_databases(t)
def check_format(self, t):
self.assertEqualDiff(
self.format_string, # from scenario
t.get('format').read())
def assertHasNoKndx(self, t, knit_name):
"""Assert that knit_name has no index on t."""
self.assertFalse(t.has(knit_name + '.kndx'))
def assertHasNoKnit(self, t, knit_name):
"""Assert that knit_name exists on t."""
# no default content
self.assertFalse(t.has(knit_name + '.knit'))
def check_databases(self, t):
"""check knit content for a repository."""
# check conversion worked
self.assertHasNoKndx(t, 'inventory')
self.assertHasNoKnit(t, 'inventory')
self.assertHasNoKndx(t, 'revisions')
self.assertHasNoKnit(t, 'revisions')
self.assertHasNoKndx(t, 'signatures')
self.assertHasNoKnit(t, 'signatures')
self.assertFalse(t.has('knits'))
# revision-indexes file-container directory
self.assertEqual([],
list(GraphIndex(t, 'pack-names', None).iter_all_entries()))
self.assertTrue(S_ISDIR(t.stat('packs').st_mode))
self.assertTrue(S_ISDIR(t.stat('upload').st_mode))
self.assertTrue(S_ISDIR(t.stat('indices').st_mode))
self.assertTrue(S_ISDIR(t.stat('obsolete_packs').st_mode))
def test_shared_disk_layout(self):
format = self.get_format()
repo = self.make_repository('.', shared=True, format=format)
# we want:
t = repo.bzrdir.get_repository_transport(None)
self.check_format(t)
# XXX: no locks left when unlocked at the moment
# self.assertEqualDiff('', t.get('lock').read())
# We should have a 'shared-storage' marker file.
self.assertEqualDiff('', t.get('shared-storage').read())
self.check_databases(t)
def test_shared_no_tree_disk_layout(self):
format = self.get_format()
repo = self.make_repository('.', shared=True, format=format)
repo.set_make_working_trees(False)
# we want:
t = repo.bzrdir.get_repository_transport(None)
self.check_format(t)
# XXX: no locks left when unlocked at the moment
# self.assertEqualDiff('', t.get('lock').read())
# We should have a 'shared-storage' marker file.
self.assertEqualDiff('', t.get('shared-storage').read())
# We should have a marker for the no-working-trees flag.
self.assertEqualDiff('', t.get('no-working-trees').read())
# The marker should go when we toggle the setting.
repo.set_make_working_trees(True)
self.assertFalse(t.has('no-working-trees'))
self.check_databases(t)
def test_adding_revision_creates_pack_indices(self):
format = self.get_format()
tree = self.make_branch_and_tree('.', format=format)
trans = tree.branch.repository.bzrdir.get_repository_transport(None)
self.assertEqual([],
list(GraphIndex(trans, 'pack-names', None).iter_all_entries()))
tree.commit('foobarbaz')
index = GraphIndex(trans, 'pack-names', None)
index_nodes = list(index.iter_all_entries())
self.assertEqual(1, len(index_nodes))
node = index_nodes[0]
name = node[1][0]
# the pack sizes should be listed in the index
pack_value = node[2]
sizes = [int(digits) for digits in pack_value.split(' ')]
for size, suffix in zip(sizes, ['.rix', '.iix', '.tix', '.six']):
stat = trans.stat('indices/%s%s' % (name, suffix))
self.assertEqual(size, stat.st_size)
def test_pulling_nothing_leads_to_no_new_names(self):
format = self.get_format()
tree1 = self.make_branch_and_tree('1', format=format)
tree2 = self.make_branch_and_tree('2', format=format)
tree1.branch.repository.fetch(tree2.branch.repository)
trans = tree1.branch.repository.bzrdir.get_repository_transport(None)
self.assertEqual([],
list(GraphIndex(trans, 'pack-names', None).iter_all_entries()))
def test_commit_across_pack_shape_boundary_autopacks(self):
format = self.get_format()
tree = self.make_branch_and_tree('.', format=format)
trans = tree.branch.repository.bzrdir.get_repository_transport(None)
# This test could be a little cheaper by replacing the packs
# attribute on the repository to allow a different pack distribution
# and max packs policy - so we are checking the policy is honoured
# in the test. But for now 11 commits is not a big deal in a single
# test.
for x in range(9):
tree.commit('commit %s' % x)
# there should be 9 packs:
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(9, len(list(index.iter_all_entries())))
# insert some files in obsolete_packs which should be removed by pack.
trans.put_bytes('obsolete_packs/foo', '123')
trans.put_bytes('obsolete_packs/bar', '321')
# committing one more should coalesce to 1 of 10.
tree.commit('commit triggering pack')
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(1, len(list(index.iter_all_entries())))
# packing should not damage data
tree = tree.bzrdir.open_workingtree()
check_result = tree.branch.repository.check(
[tree.branch.last_revision()])
# We should have 50 (10x5) files in the obsolete_packs directory.
obsolete_files = list(trans.list_dir('obsolete_packs'))
self.assertFalse('foo' in obsolete_files)
self.assertFalse('bar' in obsolete_files)
self.assertEqual(50, len(obsolete_files))
# XXX: Todo check packs obsoleted correctly - old packs and indices
# in the obsolete_packs directory.
large_pack_name = list(index.iter_all_entries())[0][1][0]
# finally, committing again should not touch the large pack.
tree.commit('commit not triggering pack')
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(2, len(list(index.iter_all_entries())))
pack_names = [node[1][0] for node in index.iter_all_entries()]
self.assertTrue(large_pack_name in pack_names)
def test_fail_obsolete_deletion(self):
# failing to delete obsolete packs is not fatal
format = self.get_format()
server = fakenfs.FakeNFSServer()
server.setUp()
self.addCleanup(server.tearDown)
transport = get_transport(server.get_url())
bzrdir = self.get_format().initialize_on_transport(transport)
repo = bzrdir.create_repository()
repo_transport = bzrdir.get_repository_transport(None)
self.assertTrue(repo_transport.has('obsolete_packs'))
# these files are in use by another client and typically can't be deleted
repo_transport.put_bytes('obsolete_packs/.nfsblahblah', 'contents')
repo._pack_collection._clear_obsolete_packs()
self.assertTrue(repo_transport.has('obsolete_packs/.nfsblahblah'))
def test_pack_after_two_commits_packs_everything(self):
format = self.get_format()
tree = self.make_branch_and_tree('.', format=format)
trans = tree.branch.repository.bzrdir.get_repository_transport(None)
tree.commit('start')
tree.commit('more work')
tree.branch.repository.pack()
# there should be 1 pack:
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(1, len(list(index.iter_all_entries())))
self.assertEqual(2, len(tree.branch.repository.all_revision_ids()))
def test_pack_layout(self):
format = self.get_format()
tree = self.make_branch_and_tree('.', format=format)
trans = tree.branch.repository.bzrdir.get_repository_transport(None)
tree.commit('start', rev_id='1')
tree.commit('more work', rev_id='2')
tree.branch.repository.pack()
tree.lock_read()
self.addCleanup(tree.unlock)
pack = tree.branch.repository._pack_collection.get_pack_by_name(
tree.branch.repository._pack_collection.names()[0])
# revision access tends to be tip->ancestor, so ordering that way on
# disk is a good idea.
for _1, key, val, refs in pack.revision_index.iter_all_entries():
if key == ('1',):
pos_1 = int(val[1:].split()[0])
else:
pos_2 = int(val[1:].split()[0])
self.assertTrue(pos_2 < pos_1)
def test_pack_repositories_support_multiple_write_locks(self):
format = self.get_format()
self.make_repository('.', shared=True, format=format)
r1 = repository.Repository.open('.')
r2 = repository.Repository.open('.')
r1.lock_write()
self.addCleanup(r1.unlock)
r2.lock_write()
r2.unlock()
def _add_text(self, repo, fileid):
"""Add a text to the repository within a write group."""
repo.texts.add_lines((fileid, 'samplerev+'+fileid), [], [])
def test_concurrent_writers_merge_new_packs(self):
format = self.get_format()
self.make_repository('.', shared=True, format=format)
r1 = repository.Repository.open('.')
r2 = repository.Repository.open('.')
r1.lock_write()
try:
# access enough data to load the names list
list(r1.all_revision_ids())
r2.lock_write()
try:
# access enough data to load the names list
list(r2.all_revision_ids())
r1.start_write_group()
try:
r2.start_write_group()
try:
self._add_text(r1, 'fileidr1')
self._add_text(r2, 'fileidr2')
except:
r2.abort_write_group()
raise
except:
r1.abort_write_group()
raise
# both r1 and r2 have open write groups with data in them
# created while the other's write group was open.
# Commit both which requires a merge to the pack-names.
try:
r1.commit_write_group()
except:
r1.abort_write_group()
r2.abort_write_group()
raise
r2.commit_write_group()
# tell r1 to reload from disk
r1._pack_collection.reset()
# Now both repositories should know about both names
r1._pack_collection.ensure_loaded()
r2._pack_collection.ensure_loaded()
self.assertEqual(r1._pack_collection.names(), r2._pack_collection.names())
self.assertEqual(2, len(r1._pack_collection.names()))
finally:
r2.unlock()
finally:
r1.unlock()
def test_concurrent_writer_second_preserves_dropping_a_pack(self):
format = self.get_format()
self.make_repository('.', shared=True, format=format)
r1 = repository.Repository.open('.')
r2 = repository.Repository.open('.')
# add a pack to drop
r1.lock_write()
try:
r1.start_write_group()
try:
self._add_text(r1, 'fileidr1')
except:
r1.abort_write_group()
raise
else:
r1.commit_write_group()
r1._pack_collection.ensure_loaded()
name_to_drop = r1._pack_collection.all_packs()[0].name
finally:
r1.unlock()
r1.lock_write()
try:
# access enough data to load the names list
list(r1.all_revision_ids())
r2.lock_write()
try:
# access enough data to load the names list
list(r2.all_revision_ids())
r1._pack_collection.ensure_loaded()
try:
r2.start_write_group()
try:
# in r1, drop the pack
r1._pack_collection._remove_pack_from_memory(
r1._pack_collection.get_pack_by_name(name_to_drop))
# in r2, add a pack
self._add_text(r2, 'fileidr2')
except:
r2.abort_write_group()
raise
except:
r1._pack_collection.reset()
raise
# r1 has a changed names list, and r2 an open write groups with
# changes.
# save r1, and then commit the r2 write group, which requires a
# merge to the pack-names, which should not reinstate
# name_to_drop
try:
r1._pack_collection._save_pack_names()
r1._pack_collection.reset()
except:
r2.abort_write_group()
raise
try:
r2.commit_write_group()
except:
r2.abort_write_group()
raise
# Now both repositories should now about just one name.
r1._pack_collection.ensure_loaded()
r2._pack_collection.ensure_loaded()
self.assertEqual(r1._pack_collection.names(), r2._pack_collection.names())
self.assertEqual(1, len(r1._pack_collection.names()))
self.assertFalse(name_to_drop in r1._pack_collection.names())
finally:
r2.unlock()
finally:
r1.unlock()
def test_lock_write_does_not_physically_lock(self):
repo = self.make_repository('.', format=self.get_format())
repo.lock_write()
self.addCleanup(repo.unlock)
self.assertFalse(repo.get_physical_lock_status())
def prepare_for_break_lock(self):
# Setup the global ui factory state so that a break-lock method call
# will find usable input in the input stream.
old_factory = ui.ui_factory
def restoreFactory():
ui.ui_factory = old_factory
self.addCleanup(restoreFactory)
ui.ui_factory = ui.SilentUIFactory()
ui.ui_factory.stdin = StringIO("y\n")
def test_break_lock_breaks_physical_lock(self):
repo = self.make_repository('.', format=self.get_format())
repo._pack_collection.lock_names()
repo.control_files.leave_in_place()
repo.unlock()
repo2 = repository.Repository.open('.')
self.assertTrue(repo.get_physical_lock_status())
self.prepare_for_break_lock()
repo2.break_lock()
self.assertFalse(repo.get_physical_lock_status())
def test_broken_physical_locks_error_on__unlock_names_lock(self):
repo = self.make_repository('.', format=self.get_format())
repo._pack_collection.lock_names()
self.assertTrue(repo.get_physical_lock_status())
repo2 = repository.Repository.open('.')
self.prepare_for_break_lock()
repo2.break_lock()
self.assertRaises(errors.LockBroken, repo._pack_collection._unlock_names)
def test_fetch_without_find_ghosts_ignores_ghosts(self):
# we want two repositories at this point:
# one with a revision that is a ghost in the other
# repository.
# 'ghost' is present in has_ghost, 'ghost' is absent in 'missing_ghost'.
# 'references' is present in both repositories, and 'tip' is present
# just in has_ghost.
# has_ghost missing_ghost
#------------------------------
# 'ghost' -
# 'references' 'references'
# 'tip' -
# In this test we fetch 'tip' which should not fetch 'ghost'
has_ghost = self.make_repository('has_ghost', format=self.get_format())
missing_ghost = self.make_repository('missing_ghost',
format=self.get_format())
def add_commit(repo, revision_id, parent_ids):
repo.lock_write()
repo.start_write_group()
inv = inventory.Inventory(revision_id=revision_id)
inv.root.revision = revision_id
root_id = inv.root.file_id
sha1 = repo.add_inventory(revision_id, inv, [])
repo.texts.add_lines((root_id, revision_id), [], [])
rev = _mod_revision.Revision(timestamp=0,
timezone=None,
committer="Foo Bar <foo@example.com>",
message="Message",
inventory_sha1=sha1,
revision_id=revision_id)
rev.parent_ids = parent_ids
repo.add_revision(revision_id, rev)
repo.commit_write_group()
repo.unlock()
add_commit(has_ghost, 'ghost', [])
add_commit(has_ghost, 'references', ['ghost'])
add_commit(missing_ghost, 'references', ['ghost'])
add_commit(has_ghost, 'tip', ['references'])
missing_ghost.fetch(has_ghost, 'tip')
# missing ghost now has tip and not ghost.
rev = missing_ghost.get_revision('tip')
inv = missing_ghost.get_inventory('tip')
self.assertRaises(errors.NoSuchRevision,
missing_ghost.get_revision, 'ghost')
self.assertRaises(errors.NoSuchRevision,
missing_ghost.get_inventory, 'ghost')
def test_supports_external_lookups(self):
repo = self.make_repository('.', format=self.get_format())
self.assertEqual(self.format_supports_external_lookups,
repo._format.supports_external_lookups)
class TestPackRepositoryStacking(TestCaseWithTransport):
"""Tests for stacking pack repositories"""
def setUp(self):
if not self.format_supports_external_lookups:
raise TestNotApplicable("%r doesn't support stacking"
% (self.format_name,))
super(TestPackRepositoryStacking, self).setUp()
def get_format(self):
return bzrdir.format_registry.make_bzrdir(self.format_name)
def test_stack_checks_rich_root_compatibility(self):
# early versions of the packing code relied on pack internals to
# stack, but the current version should be able to stack on any
# format.
#
# TODO: Possibly this should be run per-repository-format and raise
# TestNotApplicable on formats that don't support stacking. -- mbp
# 20080729
repo = self.make_repository('repo', format=self.get_format())
if repo.supports_rich_root():
# can only stack on repositories that have compatible internal
# metadata
if getattr(repo._format, 'supports_tree_reference', False):
matching_format_name = 'pack-0.92-subtree'
else:
matching_format_name = 'rich-root-pack'
mismatching_format_name = 'pack-0.92'
else:
matching_format_name = 'pack-0.92'
mismatching_format_name = 'pack-0.92-subtree'
base = self.make_repository('base', format=matching_format_name)
repo.add_fallback_repository(base)
# you can't stack on something with incompatible data
bad_repo = self.make_repository('mismatch',
format=mismatching_format_name)
e = self.assertRaises(errors.IncompatibleRepositories,
repo.add_fallback_repository, bad_repo)
self.assertContainsRe(str(e),
r'(?m)KnitPackRepository.*/mismatch/.*\nis not compatible with\n'
r'KnitPackRepository.*/repo/.*\n'
r'different rich-root support')
def test_stack_checks_serializers_compatibility(self):
repo = self.make_repository('repo', format=self.get_format())
if getattr(repo._format, 'supports_tree_reference', False):
# can only stack on repositories that have compatible internal
# metadata
matching_format_name = 'pack-0.92-subtree'
mismatching_format_name = 'rich-root-pack'
else:
if repo.supports_rich_root():
matching_format_name = 'rich-root-pack'
mismatching_format_name = 'pack-0.92-subtree'
else:
raise TestNotApplicable('No formats use non-v5 serializer'
' without having rich-root also set')
base = self.make_repository('base', format=matching_format_name)
repo.add_fallback_repository(base)
# you can't stack on something with incompatible data
bad_repo = self.make_repository('mismatch',
format=mismatching_format_name)
e = self.assertRaises(errors.IncompatibleRepositories,
repo.add_fallback_repository, bad_repo)
self.assertContainsRe(str(e),
r'(?m)KnitPackRepository.*/mismatch/.*\nis not compatible with\n'
r'KnitPackRepository.*/repo/.*\n'
r'different serializers')
def test_adding_pack_does_not_record_pack_names_from_other_repositories(self):
base = self.make_branch_and_tree('base', format=self.get_format())
base.commit('foo')
referencing = self.make_branch_and_tree('repo', format=self.get_format())
referencing.branch.repository.add_fallback_repository(base.branch.repository)
referencing.commit('bar')
new_instance = referencing.bzrdir.open_repository()
new_instance.lock_read()
self.addCleanup(new_instance.unlock)
new_instance._pack_collection.ensure_loaded()
self.assertEqual(1, len(new_instance._pack_collection.all_packs()))
def test_autopack_only_considers_main_repo_packs(self):
base = self.make_branch_and_tree('base', format=self.get_format())
base.commit('foo')
tree = self.make_branch_and_tree('repo', format=self.get_format())
tree.branch.repository.add_fallback_repository(base.branch.repository)
trans = tree.branch.repository.bzrdir.get_repository_transport(None)
# This test could be a little cheaper by replacing the packs
# attribute on the repository to allow a different pack distribution
# and max packs policy - so we are checking the policy is honoured
# in the test. But for now 11 commits is not a big deal in a single
# test.
for x in range(9):
tree.commit('commit %s' % x)
# there should be 9 packs:
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(9, len(list(index.iter_all_entries())))
# committing one more should coalesce to 1 of 10.
tree.commit('commit triggering pack')
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(1, len(list(index.iter_all_entries())))
# packing should not damage data
tree = tree.bzrdir.open_workingtree()
check_result = tree.branch.repository.check(
[tree.branch.last_revision()])
# We should have 50 (10x5) files in the obsolete_packs directory.
obsolete_files = list(trans.list_dir('obsolete_packs'))
self.assertFalse('foo' in obsolete_files)
self.assertFalse('bar' in obsolete_files)
self.assertEqual(50, len(obsolete_files))
# XXX: Todo check packs obsoleted correctly - old packs and indices
# in the obsolete_packs directory.
large_pack_name = list(index.iter_all_entries())[0][1][0]
# finally, committing again should not touch the large pack.
tree.commit('commit not triggering pack')
index = GraphIndex(trans, 'pack-names', None)
self.assertEqual(2, len(list(index.iter_all_entries())))
pack_names = [node[1][0] for node in index.iter_all_entries()]
self.assertTrue(large_pack_name in pack_names)
def load_tests(basic_tests, module, test_loader):
# these give the bzrdir canned format name, and the repository on-disk
# format string
scenarios_params = [
dict(format_name='pack-0.92',
format_string="Bazaar pack repository format 1 (needs bzr 0.92)\n",
format_supports_external_lookups=False),
dict(format_name='pack-0.92-subtree',
format_string="Bazaar pack repository format 1 "
"with subtree support (needs bzr 0.92)\n",
format_supports_external_lookups=False),
dict(format_name='1.6',
format_string="Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n",
format_supports_external_lookups=True),
dict(format_name='1.6.1-rich-root',
format_string="Bazaar RepositoryFormatKnitPack5RichRoot "
"(bzr 1.6.1)\n",
format_supports_external_lookups=True),
dict(format_name='development',
format_string="Bazaar development format 1 "
"(needs bzr.dev from before 1.6)\n",
format_supports_external_lookups=True),
dict(format_name='development-subtree',
format_string="Bazaar development format 1 "
"with subtree support (needs bzr.dev from before 1.6)\n",
format_supports_external_lookups=True),
]
adapter = tests.TestScenarioApplier()
# name of the scenario is the format name
adapter.scenarios = [(s['format_name'], s) for s in scenarios_params]
suite = tests.TestSuite()
tests.adapt_tests(basic_tests, adapter, suite)
return suite
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