package filesystem import ( "fmt" "io" "io/ioutil" "os" "path/filepath" "testing" "github.com/go-git/go-git/v5/plumbing" "github.com/go-git/go-git/v5/plumbing/cache" "github.com/go-git/go-git/v5/storage/filesystem/dotgit" fixtures "github.com/go-git/go-git-fixtures/v4" . "gopkg.in/check.v1" ) type FsSuite struct { fixtures.Suite } var objectTypes = []plumbing.ObjectType{ plumbing.CommitObject, plumbing.TagObject, plumbing.TreeObject, plumbing.BlobObject, } var _ = Suite(&FsSuite{}) func (s *FsSuite) TestGetFromObjectFile(c *C) { fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) expected := plumbing.NewHash("f3dfe29d268303fc6e1bbce268605fc99573406e") obj, err := o.EncodedObject(plumbing.AnyObject, expected) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) } func (s *FsSuite) TestGetFromPackfile(c *C) { fixtures.Basic().ByTag(".git").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) expected := plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5") obj, err := o.EncodedObject(plumbing.AnyObject, expected) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) }) } func (s *FsSuite) TestGetFromPackfileKeepDescriptors(c *C) { fixtures.Basic().ByTag(".git").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() dg := dotgit.NewWithOptions(fs, dotgit.Options{KeepDescriptors: true}) o := NewObjectStorageWithOptions(dg, cache.NewObjectLRUDefault(), Options{KeepDescriptors: true}) expected := plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5") obj, err := o.EncodedObject(plumbing.AnyObject, expected) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) packfiles, err := dg.ObjectPacks() c.Assert(err, IsNil) pack1, err := dg.ObjectPack(packfiles[0]) c.Assert(err, IsNil) pack1.Seek(42, os.SEEK_SET) err = o.Close() c.Assert(err, IsNil) pack2, err := dg.ObjectPack(packfiles[0]) c.Assert(err, IsNil) offset, err := pack2.Seek(0, os.SEEK_CUR) c.Assert(err, IsNil) c.Assert(offset, Equals, int64(0)) err = o.Close() c.Assert(err, IsNil) }) } func (s *FsSuite) TestGetFromPackfileMaxOpenDescriptors(c *C) { fs := fixtures.ByTag(".git").ByTag("multi-packfile").One().DotGit() o := NewObjectStorageWithOptions(dotgit.New(fs), cache.NewObjectLRUDefault(), Options{MaxOpenDescriptors: 1}) expected := plumbing.NewHash("8d45a34641d73851e01d3754320b33bb5be3c4d3") obj, err := o.getFromPackfile(expected, false) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) expected = plumbing.NewHash("e9cfa4c9ca160546efd7e8582ec77952a27b17db") obj, err = o.getFromPackfile(expected, false) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) err = o.Close() c.Assert(err, IsNil) } func (s *FsSuite) TestGetSizeOfObjectFile(c *C) { fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) // Get the size of `tree_walker.go`. expected := plumbing.NewHash("cbd81c47be12341eb1185b379d1c82675aeded6a") size, err := o.EncodedObjectSize(expected) c.Assert(err, IsNil) c.Assert(size, Equals, int64(2412)) } func (s *FsSuite) TestGetSizeFromPackfile(c *C) { fixtures.Basic().ByTag(".git").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) // Get the size of `binary.jpg`. expected := plumbing.NewHash("d5c0f4ab811897cadf03aec358ae60d21f91c50d") size, err := o.EncodedObjectSize(expected) c.Assert(err, IsNil) c.Assert(size, Equals, int64(76110)) }) } func (s *FsSuite) TestGetSizeOfAllObjectFiles(c *C) { fs := fixtures.ByTag(".git").One().DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) // Get the size of `tree_walker.go`. err := o.ForEachObjectHash(func(h plumbing.Hash) error { size, err := o.EncodedObjectSize(h) c.Assert(err, IsNil) c.Assert(size, Not(Equals), int64(0)) return nil }) c.Assert(err, IsNil) } func (s *FsSuite) TestGetFromPackfileMultiplePackfiles(c *C) { fs := fixtures.ByTag(".git").ByTag("multi-packfile").One().DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) expected := plumbing.NewHash("8d45a34641d73851e01d3754320b33bb5be3c4d3") obj, err := o.getFromPackfile(expected, false) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) expected = plumbing.NewHash("e9cfa4c9ca160546efd7e8582ec77952a27b17db") obj, err = o.getFromPackfile(expected, false) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) } func (s *FsSuite) TestIter(c *C) { fixtures.ByTag(".git").ByTag("packfile").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) iter, err := o.IterEncodedObjects(plumbing.AnyObject) c.Assert(err, IsNil) var count int32 err = iter.ForEach(func(o plumbing.EncodedObject) error { count++ return nil }) c.Assert(err, IsNil) c.Assert(count, Equals, f.ObjectsCount) }) } func (s *FsSuite) TestIterWithType(c *C) { fixtures.ByTag(".git").Test(c, func(f *fixtures.Fixture) { for _, t := range objectTypes { fs := f.DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) iter, err := o.IterEncodedObjects(t) c.Assert(err, IsNil) err = iter.ForEach(func(o plumbing.EncodedObject) error { c.Assert(o.Type(), Equals, t) return nil }) c.Assert(err, IsNil) } }) } func (s *FsSuite) TestPackfileIter(c *C) { fixtures.ByTag(".git").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() dg := dotgit.New(fs) for _, t := range objectTypes { ph, err := dg.ObjectPacks() c.Assert(err, IsNil) for _, h := range ph { f, err := dg.ObjectPack(h) c.Assert(err, IsNil) idxf, err := dg.ObjectPackIdx(h) c.Assert(err, IsNil) iter, err := NewPackfileIter(fs, f, idxf, t, false) c.Assert(err, IsNil) err = iter.ForEach(func(o plumbing.EncodedObject) error { c.Assert(o.Type(), Equals, t) return nil }) c.Assert(err, IsNil) } } }) } func copyFile(c *C, dstDir, dstFilename string, srcFile *os.File) { _, err := srcFile.Seek(0, 0) c.Assert(err, IsNil) err = os.MkdirAll(dstDir, 0750|os.ModeDir) c.Assert(err, IsNil) dst, err := os.OpenFile(filepath.Join(dstDir, dstFilename), os.O_CREATE|os.O_WRONLY, 0666) c.Assert(err, IsNil) defer dst.Close() _, err = io.Copy(dst, srcFile) c.Assert(err, IsNil) } // TestPackfileReindex tests that externally-added packfiles are considered by go-git // after calling the Reindex method func (s *FsSuite) TestPackfileReindex(c *C) { // obtain a standalone packfile that is not part of any other repository // in the fixtures: packFixture := fixtures.ByTag("packfile").ByTag("standalone").One() packFile := packFixture.Packfile() idxFile := packFixture.Idx() packFilename := packFixture.PackfileHash testObjectHash := plumbing.NewHash("a771b1e94141480861332fd0e4684d33071306c6") // this is an object we know exists in the standalone packfile fixtures.ByTag(".git").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() storer := NewStorage(fs, cache.NewObjectLRUDefault()) // check that our test object is NOT found _, err := storer.EncodedObject(plumbing.CommitObject, testObjectHash) c.Assert(err, Equals, plumbing.ErrObjectNotFound) // add the external packfile+idx to the packs folder // this simulates a git bundle unbundle command, or a repack, for example. copyFile(c, filepath.Join(storer.Filesystem().Root(), "objects", "pack"), fmt.Sprintf("pack-%s.pack", packFilename), packFile) copyFile(c, filepath.Join(storer.Filesystem().Root(), "objects", "pack"), fmt.Sprintf("pack-%s.idx", packFilename), idxFile) // check that we cannot still retrieve the test object _, err = storer.EncodedObject(plumbing.CommitObject, testObjectHash) c.Assert(err, Equals, plumbing.ErrObjectNotFound) storer.Reindex() // actually reindex // Now check that the test object can be retrieved _, err = storer.EncodedObject(plumbing.CommitObject, testObjectHash) c.Assert(err, IsNil) }) } func (s *FsSuite) TestPackfileIterKeepDescriptors(c *C) { fixtures.ByTag(".git").Test(c, func(f *fixtures.Fixture) { fs := f.DotGit() ops := dotgit.Options{KeepDescriptors: true} dg := dotgit.NewWithOptions(fs, ops) for _, t := range objectTypes { ph, err := dg.ObjectPacks() c.Assert(err, IsNil) for _, h := range ph { f, err := dg.ObjectPack(h) c.Assert(err, IsNil) idxf, err := dg.ObjectPackIdx(h) c.Assert(err, IsNil) iter, err := NewPackfileIter(fs, f, idxf, t, true) c.Assert(err, IsNil) err = iter.ForEach(func(o plumbing.EncodedObject) error { c.Assert(o.Type(), Equals, t) return nil }) c.Assert(err, IsNil) // test twice to check that packfiles are not closed err = iter.ForEach(func(o plumbing.EncodedObject) error { c.Assert(o.Type(), Equals, t) return nil }) c.Assert(err, IsNil) } } }) } func (s *FsSuite) TestGetFromObjectFileSharedCache(c *C) { f1 := fixtures.ByTag("worktree").One().DotGit() f2 := fixtures.ByTag("worktree").ByTag("submodule").One().DotGit() ch := cache.NewObjectLRUDefault() o1 := NewObjectStorage(dotgit.New(f1), ch) o2 := NewObjectStorage(dotgit.New(f2), ch) expected := plumbing.NewHash("af2d6a6954d532f8ffb47615169c8fdf9d383a1a") obj, err := o1.EncodedObject(plumbing.CommitObject, expected) c.Assert(err, IsNil) c.Assert(obj.Hash(), Equals, expected) obj, err = o2.EncodedObject(plumbing.CommitObject, expected) c.Assert(err, Equals, plumbing.ErrObjectNotFound) } func BenchmarkPackfileIter(b *testing.B) { defer fixtures.Clean() for _, f := range fixtures.ByTag(".git") { b.Run(f.URL, func(b *testing.B) { fs := f.DotGit() dg := dotgit.New(fs) for i := 0; i < b.N; i++ { for _, t := range objectTypes { ph, err := dg.ObjectPacks() if err != nil { b.Fatal(err) } for _, h := range ph { f, err := dg.ObjectPack(h) if err != nil { b.Fatal(err) } idxf, err := dg.ObjectPackIdx(h) if err != nil { b.Fatal(err) } iter, err := NewPackfileIter(fs, f, idxf, t, false) if err != nil { b.Fatal(err) } err = iter.ForEach(func(o plumbing.EncodedObject) error { if o.Type() != t { b.Errorf("expecting %s, got %s", t, o.Type()) } return nil }) if err != nil { b.Fatal(err) } } } } }) } } func BenchmarkPackfileIterReadContent(b *testing.B) { defer fixtures.Clean() for _, f := range fixtures.ByTag(".git") { b.Run(f.URL, func(b *testing.B) { fs := f.DotGit() dg := dotgit.New(fs) for i := 0; i < b.N; i++ { for _, t := range objectTypes { ph, err := dg.ObjectPacks() if err != nil { b.Fatal(err) } for _, h := range ph { f, err := dg.ObjectPack(h) if err != nil { b.Fatal(err) } idxf, err := dg.ObjectPackIdx(h) if err != nil { b.Fatal(err) } iter, err := NewPackfileIter(fs, f, idxf, t, false) if err != nil { b.Fatal(err) } err = iter.ForEach(func(o plumbing.EncodedObject) error { if o.Type() != t { b.Errorf("expecting %s, got %s", t, o.Type()) } r, err := o.Reader() if err != nil { b.Fatal(err) } if _, err := ioutil.ReadAll(r); err != nil { b.Fatal(err) } return r.Close() }) if err != nil { b.Fatal(err) } } } } }) } } func BenchmarkGetObjectFromPackfile(b *testing.B) { defer fixtures.Clean() for _, f := range fixtures.Basic() { b.Run(f.URL, func(b *testing.B) { fs := f.DotGit() o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault()) for i := 0; i < b.N; i++ { expected := plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5") obj, err := o.EncodedObject(plumbing.AnyObject, expected) if err != nil { b.Fatal(err) } if obj.Hash() != expected { b.Errorf("expecting %s, got %s", expected, obj.Hash()) } } }) } }