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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
package modules
import (
"archive/zip"
"bytes"
"fmt"
"io"
"path/filepath"
"sort"
"time"
"github.com/Masterminds/semver/v3"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/object"
)
// getVersions returns all available versions (tags) for a repository
func (h *ModuleHandler) getVersions(repoPath string) ([]string, error) {
repo, err := git.PlainOpen(repoPath)
if err != nil {
return nil, fmt.Errorf("failed to open repository: %w", err)
}
tagRefs, err := repo.Tags()
if err != nil {
return nil, fmt.Errorf("failed to get tags: %w", err)
}
semverVersions := semver.Collection{}
err = tagRefs.ForEach(func(ref *plumbing.Reference) error {
tagName := ref.Name().Short()
// Only include semantic version tags
if version, err := semver.NewVersion(tagName); err == nil {
semverVersions = append(semverVersions, version)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("failed to iterate tags: %w", err)
}
// Sort versions in descending order (newest first)
sort.Sort(sort.Reverse(semverVersions))
// Convert back to strings with v prefix
versions := make([]string, len(semverVersions))
for i, v := range semverVersions {
versions[i] = "v" + v.String()
}
return versions, nil
}
// getLatestVersion returns the latest version tag or a pseudo-version
func (h *ModuleHandler) getLatestVersion(repoPath string) (string, error) {
versions, err := h.getVersions(repoPath)
if err != nil {
return "", err
}
if len(versions) > 0 {
return versions[0], nil
}
// No tags found, generate pseudo-version from latest commit
return h.generatePseudoVersion(repoPath)
}
// generatePseudoVersion creates a pseudo-version from the latest commit
func (h *ModuleHandler) generatePseudoVersion(repoPath string) (string, error) {
repo, err := git.PlainOpen(repoPath)
if err != nil {
return "", fmt.Errorf("failed to open repository: %w", err)
}
head, err := repo.Head()
if err != nil {
return "", fmt.Errorf("failed to get HEAD: %w", err)
}
commit, err := repo.CommitObject(head.Hash())
if err != nil {
return "", fmt.Errorf("failed to get commit: %w", err)
}
// Format: v0.0.0-yyyymmddhhmmss-abcdefabcdef
timestamp := commit.Committer.When.UTC().Format("20060102150405")
shortHash := head.Hash().String()[:12]
return fmt.Sprintf("v0.0.0-%s-%s", timestamp, shortHash), nil
}
// getVersionTimestamp returns the timestamp for a specific version
func (h *ModuleHandler) getVersionTimestamp(repoPath, version string) (string, error) {
repo, err := git.PlainOpen(repoPath)
if err != nil {
return "", fmt.Errorf("failed to open repository: %w", err)
}
// Try to resolve as tag first
tagRef, err := repo.Tag(version)
if err != nil && len(version) > 0 && version[0] == 'v' {
// Try without v prefix
tagRef, err = repo.Tag(version[1:])
}
if err == nil {
// Try to get commit directly first (lightweight tag)
hash := tagRef.Hash()
if hash.IsZero() {
return "", fmt.Errorf("tag reference has zero hash for version %s", version)
}
commit, err := repo.CommitObject(hash)
if err == nil && commit != nil {
return commit.Committer.When.UTC().Format(time.RFC3339), nil
}
// Try as annotated tag
tagObj, err := repo.TagObject(hash)
if err == nil && tagObj != nil {
return tagObj.Tagger.When.UTC().Format(time.RFC3339), nil
}
return "", fmt.Errorf("failed to get timestamp for tag %s: %w", version, err)
}
// Try to resolve as commit hash
hash := plumbing.NewHash(version)
commit, err := repo.CommitObject(hash)
if err != nil {
return "", fmt.Errorf("version not found: %s", version)
}
return commit.Committer.When.UTC().Format(time.RFC3339), nil
}
// getModFile returns the go.mod file content for a specific version
func (h *ModuleHandler) getModFile(repoPath, version string) ([]byte, error) {
repo, err := git.PlainOpen(repoPath)
if err != nil {
return nil, fmt.Errorf("failed to open repository: %w", err)
}
hash, err := h.resolveVersion(repo, version)
if err != nil {
return nil, err
}
commit, err := repo.CommitObject(hash)
if err != nil {
return nil, fmt.Errorf("failed to get commit: %w", err)
}
tree, err := commit.Tree()
if err != nil {
return nil, fmt.Errorf("failed to get tree: %w", err)
}
file, err := tree.File("go.mod")
if err != nil {
return nil, fmt.Errorf("go.mod not found: %w", err)
}
content, err := file.Contents()
if err != nil {
return nil, fmt.Errorf("failed to read go.mod: %w", err)
}
return []byte(content), nil
}
// getModuleZip creates a zip archive of the module source for a specific version
func (h *ModuleHandler) getModuleZip(repoPath, version string) ([]byte, error) {
repo, err := git.PlainOpen(repoPath)
if err != nil {
return nil, fmt.Errorf("failed to open repository: %w", err)
}
hash, err := h.resolveVersion(repo, version)
if err != nil {
return nil, err
}
commit, err := repo.CommitObject(hash)
if err != nil {
return nil, fmt.Errorf("failed to get commit: %w", err)
}
tree, err := commit.Tree()
if err != nil {
return nil, fmt.Errorf("failed to get tree: %w", err)
}
buf := bytes.Buffer{}
zipWriter := zip.NewWriter(&buf)
// Walk the tree and add files to zip
err = tree.Files().ForEach(func(file *object.File) error {
// Skip files in nested modules (subdirectories with go.mod)
if h.isInNestedModule(tree, filepath.Dir(file.Name)) && file.Name != "go.mod" {
return nil
}
fileWriter, err := zipWriter.Create(file.Name)
if err != nil {
return err
}
reader, err := file.Reader()
if err != nil {
return err
}
defer reader.Close()
_, err = io.Copy(fileWriter, reader)
return err
})
if err != nil {
return nil, fmt.Errorf("failed to create zip: %w", err)
}
err = zipWriter.Close()
if err != nil {
return nil, fmt.Errorf("failed to close zip: %w", err)
}
return buf.Bytes(), nil
}
// resolveVersion converts a version string to a commit hash
func (h *ModuleHandler) resolveVersion(repo *git.Repository, version string) (plumbing.Hash, error) {
// Try as tag first
tagRef, err := repo.Tag(version)
if err == nil {
return tagRef.Hash(), nil
}
// Try without v prefix if version starts with v
if len(version) > 0 && version[0] == 'v' {
tagRef, err := repo.Tag(version[1:])
if err == nil {
return tagRef.Hash(), nil
}
}
// Try as commit hash
if len(version) >= 7 {
hash := plumbing.NewHash(version)
_, err := repo.CommitObject(hash)
if err == nil {
return hash, nil
}
}
return plumbing.ZeroHash, fmt.Errorf("version not found: %s", version)
}
// isInNestedModule checks if a directory contains a go.mod file (nested module)
func (h *ModuleHandler) isInNestedModule(tree *object.Tree, dir string) bool {
if dir == "" || dir == "." {
return false
}
modPath := filepath.Join(dir, "go.mod")
_, err := tree.File(modPath)
return err == nil
}
|
