package packfile_test import ( "io" "os" "testing" "github.com/go-git/go-billy/v5/osfs" "github.com/go-git/go-billy/v5/util" fixtures "github.com/go-git/go-git-fixtures/v4" "github.com/go-git/go-git/v5" "github.com/go-git/go-git/v5/plumbing" "github.com/go-git/go-git/v5/plumbing/format/packfile" "github.com/go-git/go-git/v5/plumbing/storer" . "gopkg.in/check.v1" ) type ParserSuite struct { fixtures.Suite } var _ = Suite(&ParserSuite{}) func (s *ParserSuite) TestParserHashes(c *C) { f := fixtures.Basic().One() scanner := packfile.NewScanner(f.Packfile()) obs := new(testObserver) parser, err := packfile.NewParser(scanner, obs) c.Assert(err, IsNil) ch, err := parser.Parse() c.Assert(err, IsNil) checksum := "a3fed42da1e8189a077c0e6846c040dcf73fc9dd" c.Assert(ch.String(), Equals, checksum) c.Assert(obs.checksum, Equals, checksum) c.Assert(int(obs.count), Equals, int(31)) commit := plumbing.CommitObject blob := plumbing.BlobObject tree := plumbing.TreeObject objs := []observerObject{ {"e8d3ffab552895c19b9fcf7aa264d277cde33881", commit, 254, 12, 0xaa07ba4b}, {"6ecf0ef2c2dffb796033e5a02219af86ec6584e5", commit, 245, 186, 0xf706df58}, {"918c48b83bd081e863dbe1b80f8998f058cd8294", commit, 242, 286, 0x12438846}, {"af2d6a6954d532f8ffb47615169c8fdf9d383a1a", commit, 242, 449, 0x2905a38c}, {"1669dce138d9b841a518c64b10914d88f5e488ea", commit, 333, 615, 0xd9429436}, {"a5b8b09e2f8fcb0bb99d3ccb0958157b40890d69", commit, 332, 838, 0xbecfde4e}, {"35e85108805c84807bc66a02d91535e1e24b38b9", commit, 244, 1063, 0x780e4b3e}, {"b8e471f58bcbca63b07bda20e428190409c2db47", commit, 243, 1230, 0xdc18344f}, {"b029517f6300c2da0f4b651b8642506cd6aaf45d", commit, 187, 1392, 0xcf4e4280}, {"32858aad3c383ed1ff0a0f9bdf231d54a00c9e88", blob, 189, 1524, 0x1f08118a}, {"d3ff53e0564a9f87d8e84b6e28e5060e517008aa", blob, 18, 1685, 0xafded7b8}, {"c192bd6a24ea1ab01d78686e417c8bdc7c3d197f", blob, 1072, 1713, 0xcc1428ed}, {"d5c0f4ab811897cadf03aec358ae60d21f91c50d", blob, 76110, 2351, 0x1631d22f}, {"880cd14280f4b9b6ed3986d6671f907d7cc2a198", blob, 2780, 78050, 0xbfff5850}, {"49c6bb89b17060d7b4deacb7b338fcc6ea2352a9", blob, 217848, 78882, 0xd108e1d8}, {"c8f1d8c61f9da76f4cb49fd86322b6e685dba956", blob, 706, 80725, 0x8e97ba25}, {"9a48f23120e880dfbe41f7c9b7b708e9ee62a492", blob, 11488, 80998, 0x7316ff70}, {"9dea2395f5403188298c1dabe8bdafe562c491e3", blob, 78, 84032, 0xdb4fce56}, {"dbd3641b371024f44d0e469a9c8f5457b0660de1", tree, 272, 84115, 0x901cce2c}, {"a8d315b2b1c615d43042c3a62402b8a54288cf5c", tree, 271, 84375, 0xec4552b0}, {"a39771a7651f97faf5c72e08224d857fc35133db", tree, 38, 84430, 0x847905bf}, {"5a877e6a906a2743ad6e45d99c1793642aaf8eda", tree, 75, 84479, 0x3689459a}, {"586af567d0bb5e771e49bdd9434f5e0fb76d25fa", tree, 38, 84559, 0xe67af94a}, {"cf4aa3b38974fb7d81f367c0830f7d78d65ab86b", tree, 34, 84608, 0xc2314a2e}, {"7e59600739c96546163833214c36459e324bad0a", blob, 9, 84653, 0xcd987848}, {"fb72698cab7617ac416264415f13224dfd7a165e", tree, 238, 84671, 0x8a853a6d}, {"4d081c50e250fa32ea8b1313cf8bb7c2ad7627fd", tree, 179, 84688, 0x70c6518}, {"eba74343e2f15d62adedfd8c883ee0262b5c8021", tree, 148, 84708, 0x4f4108e2}, {"c2d30fa8ef288618f65f6eed6e168e0d514886f4", tree, 110, 84725, 0xd6fe09e9}, {"8dcef98b1d52143e1e2dbc458ffe38f925786bf2", tree, 111, 84741, 0xf07a2804}, {"aa9b383c260e1d05fbbf6b30a02914555e20c725", tree, 73, 84760, 0x1d75d6be}, } c.Assert(obs.objects, DeepEquals, objs) } func (s *ParserSuite) TestThinPack(c *C) { fs := osfs.New(os.TempDir()) path, err := util.TempDir(fs, "", "") c.Assert(err, IsNil) // Initialize an empty repository r, err := git.PlainInit(path, true) c.Assert(err, IsNil) // Try to parse a thin pack without having the required objects in the repo to // see if the correct errors are returned thinpack := fixtures.ByTag("thinpack").One() scanner := packfile.NewScanner(thinpack.Packfile()) parser, err := packfile.NewParserWithStorage(scanner, r.Storer) // ParserWithStorage writes to the storer all parsed objects! c.Assert(err, IsNil) _, err = parser.Parse() c.Assert(err, Equals, plumbing.ErrObjectNotFound) path, err = util.TempDir(fs, "", "") c.Assert(err, IsNil) // start over with a clean repo r, err = git.PlainInit(path, true) c.Assert(err, IsNil) // Now unpack a base packfile into our empty repo: f := fixtures.ByURL("https://github.com/spinnaker/spinnaker.git").One() w, err := r.Storer.(storer.PackfileWriter).PackfileWriter() c.Assert(err, IsNil) _, err = io.Copy(w, f.Packfile()) c.Assert(err, IsNil) w.Close() // Check that the test object that will come with our thin pack is *not* in the repo _, err = r.Storer.EncodedObject(plumbing.CommitObject, plumbing.NewHash(thinpack.Head)) c.Assert(err, Equals, plumbing.ErrObjectNotFound) // Now unpack the thin pack: scanner = packfile.NewScanner(thinpack.Packfile()) parser, err = packfile.NewParserWithStorage(scanner, r.Storer) // ParserWithStorage writes to the storer all parsed objects! c.Assert(err, IsNil) h, err := parser.Parse() c.Assert(err, IsNil) c.Assert(h, Equals, plumbing.NewHash("1288734cbe0b95892e663221d94b95de1f5d7be8")) // Check that our test object is now accessible _, err = r.Storer.EncodedObject(plumbing.CommitObject, plumbing.NewHash(thinpack.Head)) c.Assert(err, IsNil) } type observerObject struct { hash string otype plumbing.ObjectType size int64 offset int64 crc uint32 } type testObserver struct { count uint32 checksum string objects []observerObject pos map[int64]int } func (t *testObserver) OnHeader(count uint32) error { t.count = count t.pos = make(map[int64]int, count) return nil } func (t *testObserver) OnInflatedObjectHeader(otype plumbing.ObjectType, objSize int64, pos int64) error { o := t.get(pos) o.otype = otype o.size = objSize o.offset = pos t.put(pos, o) return nil } func (t *testObserver) OnInflatedObjectContent(h plumbing.Hash, pos int64, crc uint32, _ []byte) error { o := t.get(pos) o.hash = h.String() o.crc = crc t.put(pos, o) return nil } func (t *testObserver) OnFooter(h plumbing.Hash) error { t.checksum = h.String() return nil } func (t *testObserver) get(pos int64) observerObject { i, ok := t.pos[pos] if ok { return t.objects[i] } return observerObject{} } func (t *testObserver) put(pos int64, o observerObject) { i, ok := t.pos[pos] if ok { t.objects[i] = o return } t.pos[pos] = len(t.objects) t.objects = append(t.objects, o) } func BenchmarkParse(b *testing.B) { defer fixtures.Clean() for _, f := range fixtures.ByTag("packfile") { b.Run(f.URL, func(b *testing.B) { for i := 0; i < b.N; i++ { parser, err := packfile.NewParser(packfile.NewScanner(f.Packfile())) if err != nil { b.Fatal(err) } _, err = parser.Parse() if err != nil { b.Fatal(err) } } }) } } func BenchmarkParseBasic(b *testing.B) { defer fixtures.Clean() f := fixtures.Basic().One() for i := 0; i < b.N; i++ { parser, err := packfile.NewParser(packfile.NewScanner(f.Packfile())) if err != nil { b.Fatal(err) } _, err = parser.Parse() if err != nil { b.Fatal(err) } } }