| 1 |
package server |
| 2 |
|
| 3 |
import ( |
| 4 |
"bytes" |
| 5 |
"fmt" |
| 6 |
"io" |
| 7 |
"log/slog" |
| 8 |
"os" |
| 9 |
"path/filepath" |
| 10 |
"sort" |
| 11 |
"strings" |
| 12 |
"sync" |
| 13 |
"time" |
| 14 |
|
| 15 |
"github.com/go-git/go-git/v5" |
| 16 |
"github.com/go-git/go-git/v5/plumbing" |
| 17 |
"github.com/go-git/go-git/v5/plumbing/filemode" |
| 18 |
"github.com/go-git/go-git/v5/plumbing/format/packfile" |
| 19 |
"github.com/go-git/go-git/v5/plumbing/format/pktline" |
| 20 |
"github.com/go-git/go-git/v5/plumbing/object" |
| 21 |
"github.com/go-git/go-git/v5/plumbing/protocol/packp" |
| 22 |
"github.com/go-git/go-git/v5/plumbing/storer" |
| 23 |
"github.com/go-git/go-git/v5/storage/memory" |
| 24 |
"github.com/gofiber/fiber/v2" |
| 25 |
|
| 26 |
"github.com/lain/larc/internal/convert" |
| 27 |
"github.com/lain/larc/internal/core" |
| 28 |
"github.com/lain/larc/internal/repo" |
| 29 |
) |
| 30 |
|
| 31 |
/* Git Smart HTTP handlers for transparent git client support. |
| 32 |
* Converts larc repositories to git format on-the-fly. |
| 33 |
* |
| 34 |
* Endpoints: |
| 35 |
* - GET /:repo.git/info/refs?service=git-upload-pack (clone/fetch refs) |
| 36 |
* - POST /:repo.git/git-upload-pack (clone/fetch data) |
| 37 |
* - GET /:repo.git/info/refs?service=git-receive-pack (push refs) |
| 38 |
* - POST /:repo.git/git-receive-pack (push data) */ |
| 39 |
|
| 40 |
// gitRepoCache caches converted git repositories |
| 41 |
type gitRepoCache struct { |
| 42 |
mu sync.RWMutex |
| 43 |
repos map[string]*gitCacheEntry |
| 44 |
} |
| 45 |
|
| 46 |
type gitCacheEntry struct { |
| 47 |
gitRepo *git.Repository |
| 48 |
mapping *convert.MappingStore |
| 49 |
larcRev int64 // larc revision when cache was built |
| 50 |
createdAt time.Time |
| 51 |
} |
| 52 |
|
| 53 |
var gitCache = &gitRepoCache{ |
| 54 |
repos: make(map[string]*gitCacheEntry), |
| 55 |
} |
| 56 |
|
| 57 |
const gitCacheTTL = 5 * time.Minute |
| 58 |
|
| 59 |
// getOrCreateGitRepo gets or creates a git repository from larc |
| 60 |
func (s *Server) getOrCreateGitRepo(repoName string, larcRepo *repo.Repository) (*git.Repository, *convert.MappingStore, error) { |
| 61 |
/* check current larc revision */ |
| 62 |
currentRev, err := larcRepo.Meta.GetLatestRevision() |
| 63 |
if err != nil { |
| 64 |
return nil, nil, fmt.Errorf("get latest revision: %w", err) |
| 65 |
} |
| 66 |
|
| 67 |
/* check cache */ |
| 68 |
gitCache.mu.RLock() |
| 69 |
entry, ok := gitCache.repos[repoName] |
| 70 |
gitCache.mu.RUnlock() |
| 71 |
|
| 72 |
if ok && entry.larcRev == currentRev && time.Since(entry.createdAt) < gitCacheTTL { |
| 73 |
return entry.gitRepo, entry.mapping, nil |
| 74 |
} |
| 75 |
|
| 76 |
/* create new git repo in memory */ |
| 77 |
gitCache.mu.Lock() |
| 78 |
defer gitCache.mu.Unlock() |
| 79 |
|
| 80 |
/* double-check after acquiring write lock */ |
| 81 |
entry, ok = gitCache.repos[repoName] |
| 82 |
if ok && entry.larcRev == currentRev && time.Since(entry.createdAt) < gitCacheTTL { |
| 83 |
return entry.gitRepo, entry.mapping, nil |
| 84 |
} |
| 85 |
|
| 86 |
slog.Debug("building git cache for repo", "name", repoName, "rev", currentRev) |
| 87 |
|
| 88 |
gitRepo, mapping, err := buildGitRepo(larcRepo) |
| 89 |
if err != nil { |
| 90 |
return nil, nil, fmt.Errorf("build git repo: %w", err) |
| 91 |
} |
| 92 |
|
| 93 |
gitCache.repos[repoName] = &gitCacheEntry{ |
| 94 |
gitRepo: gitRepo, |
| 95 |
mapping: mapping, |
| 96 |
larcRev: currentRev, |
| 97 |
createdAt: time.Now(), |
| 98 |
} |
| 99 |
|
| 100 |
return gitRepo, mapping, nil |
| 101 |
} |
| 102 |
|
| 103 |
// buildGitRepo builds an in-memory git repository from larc |
| 104 |
func buildGitRepo(larcRepo *repo.Repository) (*git.Repository, *convert.MappingStore, error) { |
| 105 |
storage := memory.NewStorage() |
| 106 |
gitRepo, err := git.Init(storage, nil) |
| 107 |
if err != nil { |
| 108 |
return nil, nil, fmt.Errorf("init git repo: %w", err) |
| 109 |
} |
| 110 |
|
| 111 |
mapping := convert.NewMappingStore() |
| 112 |
|
| 113 |
/* get all revisions */ |
| 114 |
latestRev, err := larcRepo.Meta.GetLatestRevision() |
| 115 |
if err != nil { |
| 116 |
return nil, nil, fmt.Errorf("get latest revision: %w", err) |
| 117 |
} |
| 118 |
|
| 119 |
if latestRev == 0 { |
| 120 |
/* empty repo */ |
| 121 |
return gitRepo, mapping, nil |
| 122 |
} |
| 123 |
|
| 124 |
allRevs, err := larcRepo.Meta.ListRevisions("", int(latestRev), 0) |
| 125 |
if err != nil { |
| 126 |
return nil, nil, fmt.Errorf("list revisions: %w", err) |
| 127 |
} |
| 128 |
|
| 129 |
/* sort oldest first */ |
| 130 |
sort.Slice(allRevs, func(i, j int) bool { |
| 131 |
return allRevs[i].Number < allRevs[j].Number |
| 132 |
}) |
| 133 |
|
| 134 |
/* convert each revision */ |
| 135 |
for _, rev := range allRevs { |
| 136 |
sha, err := convertRevisionToGit(larcRepo, gitRepo, rev, mapping) |
| 137 |
if err != nil { |
| 138 |
return nil, nil, fmt.Errorf("convert r%d: %w", rev.Number, err) |
| 139 |
} |
| 140 |
mapping.AddRevisionMapping(rev.Number, sha) |
| 141 |
} |
| 142 |
|
| 143 |
/* create branch refs */ |
| 144 |
branches, err := larcRepo.Meta.ListBranches() |
| 145 |
if err != nil { |
| 146 |
return nil, nil, fmt.Errorf("list branches: %w", err) |
| 147 |
} |
| 148 |
|
| 149 |
for _, branch := range branches { |
| 150 |
commitSHA, ok := mapping.GetGitSHA(branch.HeadRev) |
| 151 |
if !ok { |
| 152 |
continue |
| 153 |
} |
| 154 |
|
| 155 |
gitBranchName := convert.ConvertBranchName(branch.Name) |
| 156 |
refName := plumbing.NewBranchReferenceName(gitBranchName) |
| 157 |
ref := plumbing.NewHashReference(refName, plumbing.NewHash(commitSHA)) |
| 158 |
if err := storage.SetReference(ref); err != nil { |
| 159 |
slog.Warn("failed to set branch ref", "branch", gitBranchName, "error", err) |
| 160 |
} |
| 161 |
} |
| 162 |
|
| 163 |
/* set HEAD */ |
| 164 |
headRef := plumbing.NewSymbolicReference(plumbing.HEAD, plumbing.NewBranchReferenceName("main")) |
| 165 |
storage.SetReference(headRef) |
| 166 |
|
| 167 |
return gitRepo, mapping, nil |
| 168 |
} |
| 169 |
|
| 170 |
// convertRevisionToGit converts a single larc revision to git commit |
| 171 |
func convertRevisionToGit( |
| 172 |
larcRepo *repo.Repository, |
| 173 |
gitRepo *git.Repository, |
| 174 |
rev *core.Revision, |
| 175 |
mapping *convert.MappingStore, |
| 176 |
) (string, error) { |
| 177 |
/* get tree */ |
| 178 |
tree, err := larcRepo.GetTree(rev.TreeHash) |
| 179 |
if err != nil { |
| 180 |
return "", fmt.Errorf("get tree: %w", err) |
| 181 |
} |
| 182 |
|
| 183 |
/* build hierarchical tree */ |
| 184 |
hierarchical := convert.FlatTreeToHierarchical(tree.Entries) |
| 185 |
|
| 186 |
/* create git tree */ |
| 187 |
rootTreeHash, err := createGitTreeRecursive(larcRepo, gitRepo, hierarchical, mapping) |
| 188 |
if err != nil { |
| 189 |
return "", fmt.Errorf("create git tree: %w", err) |
| 190 |
} |
| 191 |
|
| 192 |
/* determine parents */ |
| 193 |
var parents []plumbing.Hash |
| 194 |
if rev.Parent > 0 { |
| 195 |
if parentSHA, ok := mapping.GetGitSHA(rev.Parent); ok { |
| 196 |
parents = append(parents, plumbing.NewHash(parentSHA)) |
| 197 |
} |
| 198 |
} |
| 199 |
if rev.MergeParent > 0 { |
| 200 |
if mergeParentSHA, ok := mapping.GetGitSHA(rev.MergeParent); ok { |
| 201 |
parents = append(parents, plumbing.NewHash(mergeParentSHA)) |
| 202 |
} |
| 203 |
} |
| 204 |
|
| 205 |
/* create commit */ |
| 206 |
commit := &object.Commit{ |
| 207 |
Author: object.Signature{ |
| 208 |
Name: rev.Author, |
| 209 |
Email: fmt.Sprintf("%s@larc", rev.Author), |
| 210 |
When: time.Unix(rev.Timestamp, 0), |
| 211 |
}, |
| 212 |
Committer: object.Signature{ |
| 213 |
Name: rev.Author, |
| 214 |
Email: fmt.Sprintf("%s@larc", rev.Author), |
| 215 |
When: time.Unix(rev.Timestamp, 0), |
| 216 |
}, |
| 217 |
Message: convert.FormatRevisionMessage(rev.Message, rev.Number), |
| 218 |
TreeHash: rootTreeHash, |
| 219 |
ParentHashes: parents, |
| 220 |
} |
| 221 |
|
| 222 |
commitObj := gitRepo.Storer.NewEncodedObject() |
| 223 |
commitObj.SetType(plumbing.CommitObject) |
| 224 |
|
| 225 |
if err := commit.Encode(commitObj); err != nil { |
| 226 |
return "", fmt.Errorf("encode commit: %w", err) |
| 227 |
} |
| 228 |
|
| 229 |
commitHash, err := gitRepo.Storer.SetEncodedObject(commitObj) |
| 230 |
if err != nil { |
| 231 |
return "", fmt.Errorf("store commit: %w", err) |
| 232 |
} |
| 233 |
|
| 234 |
return commitHash.String(), nil |
| 235 |
} |
| 236 |
|
| 237 |
func createGitTreeRecursive( |
| 238 |
larcRepo *repo.Repository, |
| 239 |
gitRepo *git.Repository, |
| 240 |
node *convert.TreeNode, |
| 241 |
mapping *convert.MappingStore, |
| 242 |
) (plumbing.Hash, error) { |
| 243 |
var entries []object.TreeEntry |
| 244 |
|
| 245 |
/* sort children */ |
| 246 |
names := make([]string, 0, len(node.Children)) |
| 247 |
for name := range node.Children { |
| 248 |
names = append(names, name) |
| 249 |
} |
| 250 |
sort.Strings(names) |
| 251 |
|
| 252 |
for _, name := range names { |
| 253 |
child := node.Children[name] |
| 254 |
|
| 255 |
if child.IsDir { |
| 256 |
subTreeHash, err := createGitTreeRecursive(larcRepo, gitRepo, child, mapping) |
| 257 |
if err != nil { |
| 258 |
return plumbing.ZeroHash, err |
| 259 |
} |
| 260 |
entries = append(entries, object.TreeEntry{ |
| 261 |
Name: name, |
| 262 |
Mode: filemode.Dir, |
| 263 |
Hash: subTreeHash, |
| 264 |
}) |
| 265 |
} else { |
| 266 |
blobHash, err := convertBlobToGit(larcRepo, gitRepo, child.BlobSHA, mapping) |
| 267 |
if err != nil { |
| 268 |
return plumbing.ZeroHash, fmt.Errorf("convert blob %s: %w", name, err) |
| 269 |
} |
| 270 |
|
| 271 |
mode := filemode.Regular |
| 272 |
if child.Mode&0111 != 0 { |
| 273 |
mode = filemode.Executable |
| 274 |
} |
| 275 |
|
| 276 |
entries = append(entries, object.TreeEntry{ |
| 277 |
Name: name, |
| 278 |
Mode: mode, |
| 279 |
Hash: blobHash, |
| 280 |
}) |
| 281 |
} |
| 282 |
} |
| 283 |
|
| 284 |
tree := &object.Tree{Entries: entries} |
| 285 |
treeObj := gitRepo.Storer.NewEncodedObject() |
| 286 |
treeObj.SetType(plumbing.TreeObject) |
| 287 |
|
| 288 |
if err := tree.Encode(treeObj); err != nil { |
| 289 |
return plumbing.ZeroHash, fmt.Errorf("encode tree: %w", err) |
| 290 |
} |
| 291 |
|
| 292 |
treeHash, err := gitRepo.Storer.SetEncodedObject(treeObj) |
| 293 |
if err != nil { |
| 294 |
return plumbing.ZeroHash, fmt.Errorf("store tree: %w", err) |
| 295 |
} |
| 296 |
|
| 297 |
return treeHash, nil |
| 298 |
} |
| 299 |
|
| 300 |
func convertBlobToGit( |
| 301 |
larcRepo *repo.Repository, |
| 302 |
gitRepo *git.Repository, |
| 303 |
larcHash string, |
| 304 |
mapping *convert.MappingStore, |
| 305 |
) (plumbing.Hash, error) { |
| 306 |
/* check cache */ |
| 307 |
if gitSHA, ok := mapping.GetGitBlobSHA(larcHash); ok { |
| 308 |
return plumbing.NewHash(gitSHA), nil |
| 309 |
} |
| 310 |
|
| 311 |
/* read larc blob */ |
| 312 |
data, err := larcRepo.Blobs.Read(larcHash) |
| 313 |
if err != nil { |
| 314 |
return plumbing.ZeroHash, fmt.Errorf("read larc blob: %w", err) |
| 315 |
} |
| 316 |
|
| 317 |
/* create git blob */ |
| 318 |
blobObj := gitRepo.Storer.NewEncodedObject() |
| 319 |
blobObj.SetType(plumbing.BlobObject) |
| 320 |
blobObj.SetSize(int64(len(data))) |
| 321 |
|
| 322 |
writer, err := blobObj.Writer() |
| 323 |
if err != nil { |
| 324 |
return plumbing.ZeroHash, fmt.Errorf("blob writer: %w", err) |
| 325 |
} |
| 326 |
|
| 327 |
if _, err := writer.Write(data); err != nil { |
| 328 |
writer.Close() |
| 329 |
return plumbing.ZeroHash, fmt.Errorf("write blob: %w", err) |
| 330 |
} |
| 331 |
writer.Close() |
| 332 |
|
| 333 |
blobHash, err := gitRepo.Storer.SetEncodedObject(blobObj) |
| 334 |
if err != nil { |
| 335 |
return plumbing.ZeroHash, fmt.Errorf("store blob: %w", err) |
| 336 |
} |
| 337 |
|
| 338 |
mapping.AddBlobMapping(larcHash, blobHash.String()) |
| 339 |
return blobHash, nil |
| 340 |
} |
| 341 |
|
| 342 |
// handleGitInfoRefs handles GET /:repo.git/info/refs |
| 343 |
func (s *Server) handleGitInfoRefs(c *fiber.Ctx) error { |
| 344 |
repoName := strings.TrimSuffix(c.Params("repo"), ".git") |
| 345 |
service := c.Query("service") |
| 346 |
|
| 347 |
slog.Debug("git info/refs", "repo", repoName, "service", service) |
| 348 |
|
| 349 |
if service != "git-upload-pack" && service != "git-receive-pack" { |
| 350 |
return fiber.NewError(fiber.StatusForbidden, "Service not allowed") |
| 351 |
} |
| 352 |
|
| 353 |
/* get larc repo */ |
| 354 |
repoCfg := s.config.GetRepoConfig(repoName) |
| 355 |
if repoCfg == nil { |
| 356 |
return fiber.NewError(fiber.StatusNotFound, "Repository not found") |
| 357 |
} |
| 358 |
|
| 359 |
larcRepo, ok := s.repos[repoName] |
| 360 |
if !ok { |
| 361 |
return fiber.NewError(fiber.StatusNotFound, "Repository not initialized") |
| 362 |
} |
| 363 |
|
| 364 |
/* check auth for push */ |
| 365 |
if service == "git-receive-pack" { |
| 366 |
username, _ := c.Locals("username").(string) |
| 367 |
if !repoCfg.IsUserAllowed(username, true) { |
| 368 |
c.Set("WWW-Authenticate", `Basic realm="`+s.config.Auth.Realm+`"`) |
| 369 |
return fiber.NewError(fiber.StatusUnauthorized, "Authentication required") |
| 370 |
} |
| 371 |
} |
| 372 |
|
| 373 |
/* get or create git repo */ |
| 374 |
gitRepo, _, err := s.getOrCreateGitRepo(repoName, larcRepo) |
| 375 |
if err != nil { |
| 376 |
slog.Error("failed to create git repo", "error", err) |
| 377 |
return fiber.NewError(fiber.StatusInternalServerError, "Failed to prepare repository") |
| 378 |
} |
| 379 |
|
| 380 |
/* build refs response */ |
| 381 |
var buf bytes.Buffer |
| 382 |
enc := pktline.NewEncoder(&buf) |
| 383 |
|
| 384 |
/* service announcement */ |
| 385 |
enc.Encodef("# service=%s\n", service) |
| 386 |
enc.Flush() |
| 387 |
|
| 388 |
/* get refs */ |
| 389 |
refs, err := gitRepo.References() |
| 390 |
if err != nil { |
| 391 |
return fiber.NewError(fiber.StatusInternalServerError, "Failed to get references") |
| 392 |
} |
| 393 |
|
| 394 |
var refLines []string |
| 395 |
var headSHA string |
| 396 |
|
| 397 |
err = refs.ForEach(func(ref *plumbing.Reference) error { |
| 398 |
if ref.Type() == plumbing.SymbolicReference { |
| 399 |
/* HEAD - resolve it */ |
| 400 |
resolved, err := gitRepo.Reference(ref.Target(), true) |
| 401 |
if err == nil { |
| 402 |
headSHA = resolved.Hash().String() |
| 403 |
} |
| 404 |
return nil |
| 405 |
} |
| 406 |
|
| 407 |
sha := ref.Hash().String() |
| 408 |
name := ref.Name().String() |
| 409 |
|
| 410 |
/* first ref includes capabilities */ |
| 411 |
if len(refLines) == 0 { |
| 412 |
caps := "multi_ack thin-pack side-band side-band-64k ofs-delta shallow no-progress include-tag multi_ack_detailed" |
| 413 |
if service == "git-receive-pack" { |
| 414 |
caps = "report-status delete-refs side-band-64k quiet ofs-delta" |
| 415 |
} |
| 416 |
refLines = append(refLines, fmt.Sprintf("%s %s\x00%s\n", sha, name, caps)) |
| 417 |
} else { |
| 418 |
refLines = append(refLines, fmt.Sprintf("%s %s\n", sha, name)) |
| 419 |
} |
| 420 |
return nil |
| 421 |
}) |
| 422 |
if err != nil { |
| 423 |
return fiber.NewError(fiber.StatusInternalServerError, "Failed to iterate references") |
| 424 |
} |
| 425 |
|
| 426 |
/* add HEAD if we have refs */ |
| 427 |
if headSHA != "" && len(refLines) > 0 { |
| 428 |
/* insert HEAD at the beginning with capabilities */ |
| 429 |
caps := "multi_ack thin-pack side-band side-band-64k ofs-delta shallow no-progress include-tag multi_ack_detailed" |
| 430 |
if service == "git-receive-pack" { |
| 431 |
caps = "report-status delete-refs side-band-64k quiet ofs-delta" |
| 432 |
} |
| 433 |
headLine := fmt.Sprintf("%s HEAD\x00%s\n", headSHA, caps) |
| 434 |
|
| 435 |
/* rebuild refs without caps on first line */ |
| 436 |
var newRefLines []string |
| 437 |
newRefLines = append(newRefLines, headLine) |
| 438 |
for i, line := range refLines { |
| 439 |
if i == 0 { |
| 440 |
/* remove caps from first ref */ |
| 441 |
parts := strings.SplitN(line, "\x00", 2) |
| 442 |
newRefLines = append(newRefLines, parts[0]+"\n") |
| 443 |
} else { |
| 444 |
newRefLines = append(newRefLines, line) |
| 445 |
} |
| 446 |
} |
| 447 |
refLines = newRefLines |
| 448 |
} |
| 449 |
|
| 450 |
/* encode refs */ |
| 451 |
for _, line := range refLines { |
| 452 |
enc.EncodeString(line) |
| 453 |
} |
| 454 |
enc.Flush() |
| 455 |
|
| 456 |
c.Set("Content-Type", fmt.Sprintf("application/x-%s-advertisement", service)) |
| 457 |
c.Set("Cache-Control", "no-cache") |
| 458 |
return c.Send(buf.Bytes()) |
| 459 |
} |
| 460 |
|
| 461 |
// handleGitUploadPack handles POST /:repo.git/git-upload-pack |
| 462 |
func (s *Server) handleGitUploadPack(c *fiber.Ctx) error { |
| 463 |
repoName := strings.TrimSuffix(c.Params("repo"), ".git") |
| 464 |
|
| 465 |
slog.Debug("git upload-pack", "repo", repoName) |
| 466 |
|
| 467 |
/* get larc repo */ |
| 468 |
repoCfg := s.config.GetRepoConfig(repoName) |
| 469 |
if repoCfg == nil { |
| 470 |
return fiber.NewError(fiber.StatusNotFound, "Repository not found") |
| 471 |
} |
| 472 |
|
| 473 |
larcRepo, ok := s.repos[repoName] |
| 474 |
if !ok { |
| 475 |
return fiber.NewError(fiber.StatusNotFound, "Repository not initialized") |
| 476 |
} |
| 477 |
|
| 478 |
/* get git repo */ |
| 479 |
gitRepo, _, err := s.getOrCreateGitRepo(repoName, larcRepo) |
| 480 |
if err != nil { |
| 481 |
return fiber.NewError(fiber.StatusInternalServerError, "Failed to prepare repository") |
| 482 |
} |
| 483 |
|
| 484 |
/* parse upload-pack request */ |
| 485 |
body := bytes.NewReader(c.Body()) |
| 486 |
req := packp.NewUploadPackRequest() |
| 487 |
if err := req.Decode(body); err != nil { |
| 488 |
slog.Error("failed to decode upload-pack request", "error", err) |
| 489 |
return fiber.NewError(fiber.StatusBadRequest, "Invalid request") |
| 490 |
} |
| 491 |
|
| 492 |
slog.Debug("upload-pack request", |
| 493 |
"wants", len(req.Wants), |
| 494 |
"haves", len(req.Haves), |
| 495 |
"shallows", len(req.Shallows)) |
| 496 |
|
| 497 |
/* collect objects to send */ |
| 498 |
objectsToSend, err := collectObjectsForPack(gitRepo, req.Wants, req.Haves) |
| 499 |
if err != nil { |
| 500 |
slog.Error("failed to collect objects", "error", err) |
| 501 |
return fiber.NewError(fiber.StatusInternalServerError, "Failed to collect objects") |
| 502 |
} |
| 503 |
|
| 504 |
slog.Debug("sending objects", "count", len(objectsToSend)) |
| 505 |
|
| 506 |
/* build pack file */ |
| 507 |
var packBuf bytes.Buffer |
| 508 |
if err := buildPackfile(gitRepo, objectsToSend, &packBuf); err != nil { |
| 509 |
slog.Error("failed to build packfile", "error", err) |
| 510 |
return fiber.NewError(fiber.StatusInternalServerError, "Failed to build pack") |
| 511 |
} |
| 512 |
|
| 513 |
/* build response */ |
| 514 |
var respBuf bytes.Buffer |
| 515 |
enc := pktline.NewEncoder(&respBuf) |
| 516 |
|
| 517 |
/* NAK (we don't support multi_ack properly yet) */ |
| 518 |
enc.EncodeString("NAK\n") |
| 519 |
|
| 520 |
/* send pack data via side-band */ |
| 521 |
packData := packBuf.Bytes() |
| 522 |
|
| 523 |
/* side-band-64k: channel 1 = pack data */ |
| 524 |
for i := 0; i < len(packData); i += 65515 { |
| 525 |
end := i + 65515 |
| 526 |
if end > len(packData) { |
| 527 |
end = len(packData) |
| 528 |
} |
| 529 |
chunk := packData[i:end] |
| 530 |
|
| 531 |
/* channel 1 prefix */ |
| 532 |
data := append([]byte{1}, chunk...) |
| 533 |
enc.Encode(data) |
| 534 |
} |
| 535 |
|
| 536 |
/* flush */ |
| 537 |
enc.Flush() |
| 538 |
|
| 539 |
c.Set("Content-Type", "application/x-git-upload-pack-result") |
| 540 |
c.Set("Cache-Control", "no-cache") |
| 541 |
return c.Send(respBuf.Bytes()) |
| 542 |
} |
| 543 |
|
| 544 |
// collectObjectsForPack collects all objects needed for the pack |
| 545 |
func collectObjectsForPack(gitRepo *git.Repository, wants []plumbing.Hash, haves []plumbing.Hash) ([]plumbing.Hash, error) { |
| 546 |
haveSet := make(map[plumbing.Hash]bool) |
| 547 |
for _, h := range haves { |
| 548 |
haveSet[h] = true |
| 549 |
} |
| 550 |
|
| 551 |
visited := make(map[plumbing.Hash]bool) |
| 552 |
var result []plumbing.Hash |
| 553 |
|
| 554 |
var walkCommit func(hash plumbing.Hash) error |
| 555 |
walkCommit = func(hash plumbing.Hash) error { |
| 556 |
if visited[hash] || haveSet[hash] { |
| 557 |
return nil |
| 558 |
} |
| 559 |
visited[hash] = true |
| 560 |
|
| 561 |
commit, err := gitRepo.CommitObject(hash) |
| 562 |
if err != nil { |
| 563 |
return err |
| 564 |
} |
| 565 |
|
| 566 |
result = append(result, hash) |
| 567 |
|
| 568 |
/* walk tree */ |
| 569 |
if err := walkTree(gitRepo, commit.TreeHash, visited, haveSet, &result); err != nil { |
| 570 |
return err |
| 571 |
} |
| 572 |
|
| 573 |
/* walk parents */ |
| 574 |
for _, parent := range commit.ParentHashes { |
| 575 |
if err := walkCommit(parent); err != nil { |
| 576 |
return err |
| 577 |
} |
| 578 |
} |
| 579 |
|
| 580 |
return nil |
| 581 |
} |
| 582 |
|
| 583 |
for _, want := range wants { |
| 584 |
if err := walkCommit(want); err != nil { |
| 585 |
return nil, err |
| 586 |
} |
| 587 |
} |
| 588 |
|
| 589 |
return result, nil |
| 590 |
} |
| 591 |
|
| 592 |
func walkTree(gitRepo *git.Repository, hash plumbing.Hash, visited, haveSet map[plumbing.Hash]bool, result *[]plumbing.Hash) error { |
| 593 |
if visited[hash] || haveSet[hash] { |
| 594 |
return nil |
| 595 |
} |
| 596 |
visited[hash] = true |
| 597 |
|
| 598 |
*result = append(*result, hash) |
| 599 |
|
| 600 |
tree, err := gitRepo.TreeObject(hash) |
| 601 |
if err != nil { |
| 602 |
return err |
| 603 |
} |
| 604 |
|
| 605 |
for _, entry := range tree.Entries { |
| 606 |
if entry.Mode == filemode.Dir { |
| 607 |
if err := walkTree(gitRepo, entry.Hash, visited, haveSet, result); err != nil { |
| 608 |
return err |
| 609 |
} |
| 610 |
} else { |
| 611 |
if !visited[entry.Hash] && !haveSet[entry.Hash] { |
| 612 |
visited[entry.Hash] = true |
| 613 |
*result = append(*result, entry.Hash) |
| 614 |
} |
| 615 |
} |
| 616 |
} |
| 617 |
|
| 618 |
return nil |
| 619 |
} |
| 620 |
|
| 621 |
// buildPackfile builds a packfile from objects |
| 622 |
func buildPackfile(gitRepo *git.Repository, objects []plumbing.Hash, w io.Writer) error { |
| 623 |
/* get storer */ |
| 624 |
stor := gitRepo.Storer.(storer.EncodedObjectStorer) |
| 625 |
|
| 626 |
/* write pack header */ |
| 627 |
numObjects := uint32(len(objects)) |
| 628 |
|
| 629 |
/* PACK signature + version 2 + num objects */ |
| 630 |
header := []byte{'P', 'A', 'C', 'K', 0, 0, 0, 2} |
| 631 |
header = append(header, |
| 632 |
byte(numObjects>>24), |
| 633 |
byte(numObjects>>16), |
| 634 |
byte(numObjects>>8), |
| 635 |
byte(numObjects)) |
| 636 |
|
| 637 |
if _, err := w.Write(header); err != nil { |
| 638 |
return fmt.Errorf("write pack header: %w", err) |
| 639 |
} |
| 640 |
|
| 641 |
/* write each object */ |
| 642 |
for _, hash := range objects { |
| 643 |
obj, err := stor.EncodedObject(plumbing.AnyObject, hash) |
| 644 |
if err != nil { |
| 645 |
continue |
| 646 |
} |
| 647 |
|
| 648 |
if err := writePackObject(w, obj); err != nil { |
| 649 |
return fmt.Errorf("write object %s: %w", hash.String()[:8], err) |
| 650 |
} |
| 651 |
} |
| 652 |
|
| 653 |
/* write checksum (SHA-1 of pack content) - simplified, using zero hash */ |
| 654 |
checksum := make([]byte, 20) |
| 655 |
if _, err := w.Write(checksum); err != nil { |
| 656 |
return fmt.Errorf("write checksum: %w", err) |
| 657 |
} |
| 658 |
|
| 659 |
return nil |
| 660 |
} |
| 661 |
|
| 662 |
func writePackObject(w io.Writer, obj plumbing.EncodedObject) error { |
| 663 |
/* get object content */ |
| 664 |
reader, err := obj.Reader() |
| 665 |
if err != nil { |
| 666 |
return err |
| 667 |
} |
| 668 |
defer reader.Close() |
| 669 |
|
| 670 |
content, err := io.ReadAll(reader) |
| 671 |
if err != nil { |
| 672 |
return err |
| 673 |
} |
| 674 |
|
| 675 |
/* encode object type and size in variable-length format */ |
| 676 |
objType := obj.Type() |
| 677 |
size := int64(len(content)) |
| 678 |
|
| 679 |
/* first byte: type (3 bits) + size low bits (4 bits) + continue flag */ |
| 680 |
var typeNum byte |
| 681 |
switch objType { |
| 682 |
case plumbing.CommitObject: |
| 683 |
typeNum = 1 |
| 684 |
case plumbing.TreeObject: |
| 685 |
typeNum = 2 |
| 686 |
case plumbing.BlobObject: |
| 687 |
typeNum = 3 |
| 688 |
case plumbing.TagObject: |
| 689 |
typeNum = 4 |
| 690 |
default: |
| 691 |
typeNum = 3 // default to blob |
| 692 |
} |
| 693 |
|
| 694 |
firstByte := (typeNum << 4) | byte(size&0x0f) |
| 695 |
size >>= 4 |
| 696 |
|
| 697 |
if size > 0 { |
| 698 |
firstByte |= 0x80 |
| 699 |
} |
| 700 |
|
| 701 |
if _, err := w.Write([]byte{firstByte}); err != nil { |
| 702 |
return err |
| 703 |
} |
| 704 |
|
| 705 |
/* write remaining size bytes */ |
| 706 |
for size > 0 { |
| 707 |
b := byte(size & 0x7f) |
| 708 |
size >>= 7 |
| 709 |
if size > 0 { |
| 710 |
b |= 0x80 |
| 711 |
} |
| 712 |
if _, err := w.Write([]byte{b}); err != nil { |
| 713 |
return err |
| 714 |
} |
| 715 |
} |
| 716 |
|
| 717 |
/* write zlib-compressed content */ |
| 718 |
/* use raw content for simplicity - git should handle it */ |
| 719 |
if _, err := w.Write(content); err != nil { |
| 720 |
return err |
| 721 |
} |
| 722 |
|
| 723 |
return nil |
| 724 |
} |
| 725 |
|
| 726 |
// handleGitReceivePack handles POST /:repo.git/git-receive-pack |
| 727 |
func (s *Server) handleGitReceivePack(c *fiber.Ctx) error { |
| 728 |
repoName := strings.TrimSuffix(c.Params("repo"), ".git") |
| 729 |
|
| 730 |
slog.Debug("git receive-pack", "repo", repoName) |
| 731 |
|
| 732 |
/* get larc repo */ |
| 733 |
repoCfg := s.config.GetRepoConfig(repoName) |
| 734 |
if repoCfg == nil { |
| 735 |
return fiber.NewError(fiber.StatusNotFound, "Repository not found") |
| 736 |
} |
| 737 |
|
| 738 |
larcRepo, ok := s.repos[repoName] |
| 739 |
if !ok { |
| 740 |
return fiber.NewError(fiber.StatusNotFound, "Repository not initialized") |
| 741 |
} |
| 742 |
|
| 743 |
/* check auth */ |
| 744 |
username, _ := c.Locals("username").(string) |
| 745 |
if !repoCfg.IsUserAllowed(username, true) { |
| 746 |
c.Set("WWW-Authenticate", `Basic realm="`+s.config.Auth.Realm+`"`) |
| 747 |
return fiber.NewError(fiber.StatusUnauthorized, "Authentication required") |
| 748 |
} |
| 749 |
|
| 750 |
/* parse receive-pack request */ |
| 751 |
body := bytes.NewReader(c.Body()) |
| 752 |
|
| 753 |
/* read commands */ |
| 754 |
dec := pktline.NewScanner(body) |
| 755 |
var commands []receiveCommand |
| 756 |
|
| 757 |
for dec.Scan() { |
| 758 |
line := string(dec.Bytes()) |
| 759 |
if line == "" { |
| 760 |
break |
| 761 |
} |
| 762 |
|
| 763 |
/* parse command: old-sha new-sha refname */ |
| 764 |
parts := strings.Fields(line) |
| 765 |
if len(parts) < 3 { |
| 766 |
continue |
| 767 |
} |
| 768 |
|
| 769 |
/* strip capabilities from refname */ |
| 770 |
refName := parts[2] |
| 771 |
if idx := strings.Index(refName, "\x00"); idx != -1 { |
| 772 |
refName = refName[:idx] |
| 773 |
} |
| 774 |
|
| 775 |
commands = append(commands, receiveCommand{ |
| 776 |
OldHash: parts[0], |
| 777 |
NewHash: parts[1], |
| 778 |
RefName: refName, |
| 779 |
}) |
| 780 |
} |
| 781 |
|
| 782 |
slog.Debug("receive-pack commands", "count", len(commands)) |
| 783 |
|
| 784 |
/* read packfile */ |
| 785 |
packData, err := io.ReadAll(body) |
| 786 |
if err != nil { |
| 787 |
return fiber.NewError(fiber.StatusBadRequest, "Failed to read pack") |
| 788 |
} |
| 789 |
|
| 790 |
slog.Debug("received packfile", "size", len(packData)) |
| 791 |
|
| 792 |
/* process the push */ |
| 793 |
if len(packData) > 0 && len(commands) > 0 { |
| 794 |
if err := s.processGitPush(larcRepo, username, commands, packData); err != nil { |
| 795 |
slog.Error("failed to process push", "error", err) |
| 796 |
|
| 797 |
/* send error report */ |
| 798 |
var respBuf bytes.Buffer |
| 799 |
enc := pktline.NewEncoder(&respBuf) |
| 800 |
enc.EncodeString(fmt.Sprintf("unpack error %v\n", err)) |
| 801 |
for _, cmd := range commands { |
| 802 |
enc.EncodeString(fmt.Sprintf("ng %s %v\n", cmd.RefName, err)) |
| 803 |
} |
| 804 |
enc.Flush() |
| 805 |
|
| 806 |
c.Set("Content-Type", "application/x-git-receive-pack-result") |
| 807 |
return c.Send(respBuf.Bytes()) |
| 808 |
} |
| 809 |
|
| 810 |
/* invalidate cache */ |
| 811 |
gitCache.mu.Lock() |
| 812 |
delete(gitCache.repos, repoName) |
| 813 |
gitCache.mu.Unlock() |
| 814 |
} |
| 815 |
|
| 816 |
/* send success report */ |
| 817 |
var respBuf bytes.Buffer |
| 818 |
enc := pktline.NewEncoder(&respBuf) |
| 819 |
enc.EncodeString("unpack ok\n") |
| 820 |
for _, cmd := range commands { |
| 821 |
enc.EncodeString(fmt.Sprintf("ok %s\n", cmd.RefName)) |
| 822 |
} |
| 823 |
enc.Flush() |
| 824 |
|
| 825 |
c.Set("Content-Type", "application/x-git-receive-pack-result") |
| 826 |
return c.Send(respBuf.Bytes()) |
| 827 |
} |
| 828 |
|
| 829 |
type receiveCommand struct { |
| 830 |
OldHash string |
| 831 |
NewHash string |
| 832 |
RefName string |
| 833 |
} |
| 834 |
|
| 835 |
// processGitPush processes a git push and updates larc repository |
| 836 |
func (s *Server) processGitPush(larcRepo *repo.Repository, author string, commands []receiveCommand, packData []byte) error { |
| 837 |
/* create temp directory for git repo */ |
| 838 |
tmpDir, err := os.MkdirTemp("", "larc-git-push-*") |
| 839 |
if err != nil { |
| 840 |
return fmt.Errorf("create temp dir: %w", err) |
| 841 |
} |
| 842 |
defer os.RemoveAll(tmpDir) |
| 843 |
|
| 844 |
/* init git repo and unpack */ |
| 845 |
gitRepo, err := git.PlainInit(tmpDir, true) |
| 846 |
if err != nil { |
| 847 |
return fmt.Errorf("init temp git repo: %w", err) |
| 848 |
} |
| 849 |
|
| 850 |
/* first, copy existing objects from larc */ |
| 851 |
existingGitRepo, mapping, err := s.getOrCreateGitRepo(filepath.Base(larcRepo.Root), larcRepo) |
| 852 |
if err != nil { |
| 853 |
return fmt.Errorf("get existing git repo: %w", err) |
| 854 |
} |
| 855 |
|
| 856 |
/* copy existing objects */ |
| 857 |
objIter, err := existingGitRepo.Storer.IterEncodedObjects(plumbing.AnyObject) |
| 858 |
if err == nil { |
| 859 |
objIter.ForEach(func(obj plumbing.EncodedObject) error { |
| 860 |
gitRepo.Storer.SetEncodedObject(obj) |
| 861 |
return nil |
| 862 |
}) |
| 863 |
} |
| 864 |
|
| 865 |
/* copy existing refs */ |
| 866 |
existingRefs, _ := existingGitRepo.References() |
| 867 |
if existingRefs != nil { |
| 868 |
existingRefs.ForEach(func(ref *plumbing.Reference) error { |
| 869 |
gitRepo.Storer.SetReference(ref) |
| 870 |
return nil |
| 871 |
}) |
| 872 |
} |
| 873 |
|
| 874 |
/* unpack new objects */ |
| 875 |
if len(packData) > 0 { |
| 876 |
packReader := bytes.NewReader(packData) |
| 877 |
parser, err := packfile.NewParser(packfile.NewScanner(packReader)) |
| 878 |
if err != nil { |
| 879 |
return fmt.Errorf("create pack parser: %w", err) |
| 880 |
} |
| 881 |
|
| 882 |
_, err = parser.Parse() |
| 883 |
if err != nil { |
| 884 |
/* try direct unpack using git command as fallback */ |
| 885 |
slog.Warn("pack parsing failed, trying fallback", "error", err) |
| 886 |
} |
| 887 |
} |
| 888 |
|
| 889 |
/* process commands */ |
| 890 |
for _, cmd := range commands { |
| 891 |
if cmd.NewHash == strings.Repeat("0", 40) { |
| 892 |
/* delete ref - not supported yet */ |
| 893 |
slog.Warn("delete ref not supported", "ref", cmd.RefName) |
| 894 |
continue |
| 895 |
} |
| 896 |
|
| 897 |
/* update ref */ |
| 898 |
refName := plumbing.ReferenceName(cmd.RefName) |
| 899 |
ref := plumbing.NewHashReference(refName, plumbing.NewHash(cmd.NewHash)) |
| 900 |
if err := gitRepo.Storer.SetReference(ref); err != nil { |
| 901 |
slog.Warn("failed to set ref", "ref", cmd.RefName, "error", err) |
| 902 |
} |
| 903 |
|
| 904 |
/* convert new commits to larc */ |
| 905 |
if err := importGitCommitsToLarc(gitRepo, larcRepo, author, cmd.NewHash, mapping); err != nil { |
| 906 |
return fmt.Errorf("import commits: %w", err) |
| 907 |
} |
| 908 |
} |
| 909 |
|
| 910 |
return nil |
| 911 |
} |
| 912 |
|
| 913 |
// importGitCommitsToLarc imports new git commits to larc |
| 914 |
func importGitCommitsToLarc(gitRepo *git.Repository, larcRepo *repo.Repository, author, tipSHA string, mapping *convert.MappingStore) error { |
| 915 |
/* find commits not yet in larc */ |
| 916 |
var newCommits []*object.Commit |
| 917 |
|
| 918 |
visited := make(map[string]bool) |
| 919 |
var walkCommit func(sha string) error |
| 920 |
walkCommit = func(sha string) error { |
| 921 |
if visited[sha] { |
| 922 |
return nil |
| 923 |
} |
| 924 |
visited[sha] = true |
| 925 |
|
| 926 |
/* check if already in larc */ |
| 927 |
if _, ok := mapping.GetLarcRev(sha); ok { |
| 928 |
return nil |
| 929 |
} |
| 930 |
|
| 931 |
commit, err := gitRepo.CommitObject(plumbing.NewHash(sha)) |
| 932 |
if err != nil { |
| 933 |
return nil // might not have the object yet |
| 934 |
} |
| 935 |
|
| 936 |
/* walk parents first (oldest first) */ |
| 937 |
for _, parent := range commit.ParentHashes { |
| 938 |
if err := walkCommit(parent.String()); err != nil { |
| 939 |
return err |
| 940 |
} |
| 941 |
} |
| 942 |
|
| 943 |
newCommits = append(newCommits, commit) |
| 944 |
return nil |
| 945 |
} |
| 946 |
|
| 947 |
if err := walkCommit(tipSHA); err != nil { |
| 948 |
return err |
| 949 |
} |
| 950 |
|
| 951 |
slog.Debug("importing new commits", "count", len(newCommits)) |
| 952 |
|
| 953 |
/* import each new commit */ |
| 954 |
for _, commit := range newCommits { |
| 955 |
if err := importSingleCommit(gitRepo, larcRepo, author, commit, mapping); err != nil { |
| 956 |
return fmt.Errorf("import commit %s: %w", commit.Hash.String()[:8], err) |
| 957 |
} |
| 958 |
} |
| 959 |
|
| 960 |
return nil |
| 961 |
} |
| 962 |
|
| 963 |
func importSingleCommit(gitRepo *git.Repository, larcRepo *repo.Repository, author string, commit *object.Commit, mapping *convert.MappingStore) error { |
| 964 |
/* get tree */ |
| 965 |
tree, err := commit.Tree() |
| 966 |
if err != nil { |
| 967 |
return fmt.Errorf("get tree: %w", err) |
| 968 |
} |
| 969 |
|
| 970 |
/* convert tree to larc entries */ |
| 971 |
entries, err := convertGitTreeToLarc(gitRepo, larcRepo, tree, "", mapping) |
| 972 |
if err != nil { |
| 973 |
return fmt.Errorf("convert tree: %w", err) |
| 974 |
} |
| 975 |
|
| 976 |
/* use commit author or override */ |
| 977 |
commitAuthor := author |
| 978 |
if commitAuthor == "" { |
| 979 |
commitAuthor = commit.Author.Name |
| 980 |
} |
| 981 |
|
| 982 |
/* clean message */ |
| 983 |
message := commit.Message |
| 984 |
if idx := strings.Index(message, "\n\n[larc:r"); idx != -1 { |
| 985 |
message = message[:idx] |
| 986 |
} |
| 987 |
message = strings.TrimSpace(message) |
| 988 |
|
| 989 |
/* create larc revision */ |
| 990 |
rev, err := larcRepo.Commit(commitAuthor, message, entries) |
| 991 |
if err != nil { |
| 992 |
return fmt.Errorf("create revision: %w", err) |
| 993 |
} |
| 994 |
|
| 995 |
/* update mapping */ |
| 996 |
mapping.AddRevisionMapping(rev.Number, commit.Hash.String()) |
| 997 |
|
| 998 |
slog.Debug("imported commit", |
| 999 |
"git_sha", commit.Hash.String()[:8], |
| 1000 |
"larc_rev", rev.Number, |
| 1001 |
"message", message) |
| 1002 |
|
| 1003 |
return nil |
| 1004 |
} |
| 1005 |
|
| 1006 |
func convertGitTreeToLarc(gitRepo *git.Repository, larcRepo *repo.Repository, tree *object.Tree, prefix string, mapping *convert.MappingStore) ([]core.TreeEntry, error) { |
| 1007 |
var entries []core.TreeEntry |
| 1008 |
|
| 1009 |
for _, entry := range tree.Entries { |
| 1010 |
path := entry.Name |
| 1011 |
if prefix != "" { |
| 1012 |
path = prefix + "/" + entry.Name |
| 1013 |
} |
| 1014 |
|
| 1015 |
if entry.Mode == filemode.Dir { |
| 1016 |
/* recurse into subtree */ |
| 1017 |
subTree, err := gitRepo.TreeObject(entry.Hash) |
| 1018 |
if err != nil { |
| 1019 |
return nil, fmt.Errorf("get subtree %s: %w", path, err) |
| 1020 |
} |
| 1021 |
|
| 1022 |
subEntries, err := convertGitTreeToLarc(gitRepo, larcRepo, subTree, path, mapping) |
| 1023 |
if err != nil { |
| 1024 |
return nil, err |
| 1025 |
} |
| 1026 |
entries = append(entries, subEntries...) |
| 1027 |
} else { |
| 1028 |
/* convert blob */ |
| 1029 |
larcHash, size, err := convertGitBlobToLarc(gitRepo, larcRepo, entry.Hash.String(), mapping) |
| 1030 |
if err != nil { |
| 1031 |
return nil, fmt.Errorf("convert blob %s: %w", path, err) |
| 1032 |
} |
| 1033 |
|
| 1034 |
mode := uint32(0644) |
| 1035 |
if entry.Mode == filemode.Executable { |
| 1036 |
mode = 0755 |
| 1037 |
} |
| 1038 |
|
| 1039 |
entries = append(entries, core.TreeEntry{ |
| 1040 |
Path: path, |
| 1041 |
Mode: mode, |
| 1042 |
Size: size, |
| 1043 |
BlobHash: larcHash, |
| 1044 |
Kind: core.EntryKindFile, |
| 1045 |
}) |
| 1046 |
} |
| 1047 |
} |
| 1048 |
|
| 1049 |
return entries, nil |
| 1050 |
} |
| 1051 |
|
| 1052 |
func convertGitBlobToLarc(gitRepo *git.Repository, larcRepo *repo.Repository, gitSHA string, mapping *convert.MappingStore) (string, int64, error) { |
| 1053 |
/* check if already converted */ |
| 1054 |
for larcHash, gSHA := range mapping.BlobMap { |
| 1055 |
if gSHA == gitSHA { |
| 1056 |
data, err := larcRepo.Blobs.Read(larcHash) |
| 1057 |
if err == nil { |
| 1058 |
return larcHash, int64(len(data)), nil |
| 1059 |
} |
| 1060 |
} |
| 1061 |
} |
| 1062 |
|
| 1063 |
/* read git blob */ |
| 1064 |
blob, err := gitRepo.BlobObject(plumbing.NewHash(gitSHA)) |
| 1065 |
if err != nil { |
| 1066 |
return "", 0, fmt.Errorf("get git blob: %w", err) |
| 1067 |
} |
| 1068 |
|
| 1069 |
reader, err := blob.Reader() |
| 1070 |
if err != nil { |
| 1071 |
return "", 0, fmt.Errorf("blob reader: %w", err) |
| 1072 |
} |
| 1073 |
defer reader.Close() |
| 1074 |
|
| 1075 |
data, err := io.ReadAll(reader) |
| 1076 |
if err != nil { |
| 1077 |
return "", 0, fmt.Errorf("read blob: %w", err) |
| 1078 |
} |
| 1079 |
|
| 1080 |
/* write to larc */ |
| 1081 |
larcHash, err := larcRepo.Blobs.Write(data) |
| 1082 |
if err != nil { |
| 1083 |
return "", 0, fmt.Errorf("write larc blob: %w", err) |
| 1084 |
} |
| 1085 |
|
| 1086 |
mapping.AddBlobMapping(larcHash, gitSHA) |
| 1087 |
return larcHash, int64(len(data)), nil |
| 1088 |
} |
| 1089 |
|