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author | Christopher Larson <kergoth@gmail.com> | 2017-05-13 02:46:27 +0500 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-05-26 21:58:58 +0100 |
commit | 0254020f0e1911c0eaf99111b91828d2a74a4ee1 (patch) | |
tree | b4d0ca563a0a25559b66691d5acb2cfe5681ddbf /lib/bb/tests | |
parent | 02eebee6709e57b523862257f75929e64f16d6b0 (diff) | |
download | bitbake-contrib-0254020f0e1911c0eaf99111b91828d2a74a4ee1.tar.gz |
git-make-shallow: add script to make a git repo shallow
This script will be used by the git fetcher to create shallow mirror tarballs.
usage: git-make-shallow [-h] [--ref REF] [--shrink] REVISION [REVISION ...]
Remove the history of the specified revisions, then optionally filter the
available refs to those specified.
positional arguments:
REVISION a git revision/commit
optional arguments:
-h, --help show this help message and exit
--ref REF, -r REF remove all but the specified refs (cumulative)
--shrink, -s shrink the git repository by repacking and pruning
While git does provide the ability to clone at a specific depth, and fetch all
remote refs at a particular depth, the depth is across all branches/tags, and
doesn't provide the flexibility we need, hence this script.
Refs (branches+tags) can be filtered, as the process of history removal scales
up rapidly with the number of refs. Even the existing `git fetch --depth=` is
extremely slow on an upstream kernel repository with all the branches and tags
kept.
This uses the same underlying mechanism to implement the history removal which
git itself uses (.git/shallow), and the results, when configured similarly, are
in line with the results git itself produces with `fetch --depth`.
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'lib/bb/tests')
-rw-r--r-- | lib/bb/tests/fetch.py | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/lib/bb/tests/fetch.py b/lib/bb/tests/fetch.py index 0fd2c0216..510071d25 100644 --- a/lib/bb/tests/fetch.py +++ b/lib/bb/tests/fetch.py @@ -852,3 +852,130 @@ class FetchCheckStatusTest(FetcherTest): self.assertTrue(ret, msg="URI %s, can't check status" % (u)) connection_cache.close_connections() + + +class GitMakeShallowTest(FetcherTest): + bitbake_dir = os.path.join(os.path.dirname(os.path.join(__file__)), '..', '..', '..') + make_shallow_path = os.path.join(bitbake_dir, 'bin', 'git-make-shallow') + + def setUp(self): + FetcherTest.setUp(self) + self.gitdir = os.path.join(self.tempdir, 'gitshallow') + bb.utils.mkdirhier(self.gitdir) + bb.process.run('git init', cwd=self.gitdir) + + def assertRefs(self, expected_refs): + actual_refs = self.git(['for-each-ref', '--format=%(refname)']).splitlines() + full_expected = self.git(['rev-parse', '--symbolic-full-name'] + expected_refs).splitlines() + self.assertEqual(sorted(full_expected), sorted(actual_refs)) + + def assertRevCount(self, expected_count, args=None): + if args is None: + args = ['HEAD'] + revs = self.git(['rev-list'] + args) + actual_count = len(revs.splitlines()) + self.assertEqual(expected_count, actual_count, msg='Object count `%d` is not the expected `%d`' % (actual_count, expected_count)) + + def git(self, cmd): + if isinstance(cmd, str): + cmd = 'git ' + cmd + else: + cmd = ['git'] + cmd + return bb.process.run(cmd, cwd=self.gitdir)[0] + + def make_shallow(self, args=None): + if args is None: + args = ['HEAD'] + return bb.process.run([self.make_shallow_path] + args, cwd=self.gitdir) + + def add_empty_file(self, path, msg=None): + if msg is None: + msg = path + open(os.path.join(self.gitdir, path), 'w').close() + self.git(['add', path]) + self.git(['commit', '-m', msg, path]) + + def test_make_shallow_single_branch_no_merge(self): + self.add_empty_file('a') + self.add_empty_file('b') + self.assertRevCount(2) + self.make_shallow() + self.assertRevCount(1) + + def test_make_shallow_single_branch_one_merge(self): + self.add_empty_file('a') + self.add_empty_file('b') + self.git('checkout -b a_branch') + self.add_empty_file('c') + self.git('checkout master') + self.add_empty_file('d') + self.git('merge --no-ff --no-edit a_branch') + self.git('branch -d a_branch') + self.add_empty_file('e') + self.assertRevCount(6) + self.make_shallow(['HEAD~2']) + self.assertRevCount(5) + + def test_make_shallow_at_merge(self): + self.add_empty_file('a') + self.git('checkout -b a_branch') + self.add_empty_file('b') + self.git('checkout master') + self.git('merge --no-ff --no-edit a_branch') + self.git('branch -d a_branch') + self.assertRevCount(3) + self.make_shallow() + self.assertRevCount(1) + + def test_make_shallow_annotated_tag(self): + self.add_empty_file('a') + self.add_empty_file('b') + self.git('tag -a -m a_tag a_tag') + self.assertRevCount(2) + self.make_shallow(['a_tag']) + self.assertRevCount(1) + + def test_make_shallow_multi_ref(self): + self.add_empty_file('a') + self.add_empty_file('b') + self.git('checkout -b a_branch') + self.add_empty_file('c') + self.git('checkout master') + self.add_empty_file('d') + self.git('checkout -b a_branch_2') + self.add_empty_file('a_tag') + self.git('tag a_tag') + self.git('checkout master') + self.git('branch -D a_branch_2') + self.add_empty_file('e') + self.assertRevCount(6, ['--all']) + self.make_shallow() + self.assertRevCount(5, ['--all']) + + def test_make_shallow_multi_ref_trim(self): + self.add_empty_file('a') + self.git('checkout -b a_branch') + self.add_empty_file('c') + self.git('checkout master') + self.assertRevCount(1) + self.assertRevCount(2, ['--all']) + self.assertRefs(['master', 'a_branch']) + self.make_shallow(['-r', 'master', 'HEAD']) + self.assertRevCount(1, ['--all']) + self.assertRefs(['master']) + + def test_make_shallow_noop(self): + self.add_empty_file('a') + self.assertRevCount(1) + self.make_shallow() + self.assertRevCount(1) + + if os.environ.get("BB_SKIP_NETTESTS") == "yes": + print("Unset BB_SKIP_NETTESTS to run network tests") + else: + def test_make_shallow_bitbake(self): + self.git('remote add origin https://github.com/openembedded/bitbake') + self.git('fetch --tags origin') + orig_revs = len(self.git('rev-list --all').splitlines()) + self.make_shallow(['refs/tags/1.10.0']) + self.assertRevCount(orig_revs - 1746, ['--all']) |