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Refactor git command stdio pipe (#36422)

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Most potential deadlock problems should have been fixed, and new code is
unlikely to cause new problems with the new design.

Also raise the minimum Git version required to 2.6.0 (released in 2015)
This commit is contained in:
wxiaoguang
2026-01-22 14:04:26 +08:00
committed by GitHub
parent 2a56c4ec3b
commit 3a09d7aa8d
63 changed files with 767 additions and 1016 deletions
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modules/git/pipeline/lfs_gogit.go
+5 -66
View File
@@ -6,11 +6,10 @@
package pipeline
import (
"bufio"
"fmt"
"io"
"sort"
"strings"
"sync"
"code.gitea.io/gitea/modules/git"
@@ -24,7 +23,6 @@ func FindLFSFile(repo *git.Repository, objectID git.ObjectID) ([]*LFSResult, err
resultsMap := map[string]*LFSResult{}
results := make([]*LFSResult, 0)
basePath := repo.Path
gogitRepo := repo.GoGitRepo()
commitsIter, err := gogitRepo.Log(&gogit.LogOptions{
@@ -32,7 +30,7 @@ func FindLFSFile(repo *git.Repository, objectID git.ObjectID) ([]*LFSResult, err
All: true,
})
if err != nil {
return nil, lfsError("failed to get GoGit CommitsIter", err)
return nil, fmt.Errorf("LFS error occurred, failed to get GoGit CommitsIter: err: %w", err)
}
err = commitsIter.ForEach(func(gitCommit *object.Commit) error {
@@ -66,7 +64,7 @@ func FindLFSFile(repo *git.Repository, objectID git.ObjectID) ([]*LFSResult, err
return nil
})
if err != nil && err != io.EOF {
return nil, lfsError("failure in CommitIter.ForEach", err)
return nil, fmt.Errorf("LFS error occurred, failure in CommitIter.ForEach: %w", err)
}
for _, result := range resultsMap {
@@ -82,65 +80,6 @@ func FindLFSFile(repo *git.Repository, objectID git.ObjectID) ([]*LFSResult, err
}
sort.Sort(lfsResultSlice(results))
// Should really use a go-git function here but name-rev is not completed and recapitulating it is not simple
shasToNameReader, shasToNameWriter := io.Pipe()
nameRevStdinReader, nameRevStdinWriter := io.Pipe()
errChan := make(chan error, 1)
wg := sync.WaitGroup{}
wg.Add(3)
go func() {
defer wg.Done()
scanner := bufio.NewScanner(nameRevStdinReader)
i := 0
for scanner.Scan() {
line := scanner.Text()
if len(line) == 0 {
continue
}
result := results[i]
result.FullCommitName = line
result.BranchName = strings.Split(line, "~")[0]
i++
}
}()
go NameRevStdin(repo.Ctx, shasToNameReader, nameRevStdinWriter, &wg, basePath)
go func() {
defer wg.Done()
defer shasToNameWriter.Close()
for _, result := range results {
i := 0
if i < len(result.SHA) {
n, err := shasToNameWriter.Write([]byte(result.SHA)[i:])
if err != nil {
errChan <- err
break
}
i += n
}
n := 0
for n < 1 {
n, err = shasToNameWriter.Write([]byte{'\n'})
if err != nil {
errChan <- err
break
}
}
}
}()
wg.Wait()
select {
case err, has := <-errChan:
if has {
return nil, lfsError("unable to obtain name for LFS files", err)
}
default:
}
return results, nil
err = fillResultNameRev(repo.Ctx, repo.Path, results)
return results, err
}