1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
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)
}
}
}
|
