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On open repository open common cat file batch and batch-check (#15667)

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Use common git cat-file --batch and git cat-file --batch-check to
significantly reduce calls to git.
    
Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-05-10 02:27:03 +01:00 • committed by GitHub
parent 038e1db4df
commit 270aab429e
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GPG key ID: 4AEE18F83AFDEB23
26 changed files with 468 additions and 166 deletions
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9
modules/git/pipeline/lfs_nogogit.go
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@ -43,8 +43,6 @@ func FindLFSFile(repo *git.Repository, hash git.SHA1) ([]*LFSResult, error) {
basePath := repo.Path
hashStr := hash.String()
// Use rev-list to provide us with all commits in order
revListReader, revListWriter := io.Pipe()
defer func() {
@ -64,7 +62,7 @@ func FindLFSFile(repo *git.Repository, hash git.SHA1) ([]*LFSResult, error) {
// Next feed the commits in order into cat-file --batch, followed by their trees and sub trees as necessary.
// so let's create a batch stdin and stdout
batchStdinWriter, batchReader, cancel := git.CatFileBatch(repo.Path)
batchStdinWriter, batchReader, cancel := repo.CatFileBatch()
defer cancel()
// We'll use a scanner for the revList because it's simpler than a bufio.Reader
@ -132,8 +130,7 @@ func FindLFSFile(repo *git.Repository, hash git.SHA1) ([]*LFSResult, error) {
return nil, err
}
n += int64(count)
sha := git.To40ByteSHA(sha20byte)
if bytes.Equal(sha, []byte(hashStr)) {
if bytes.Equal(sha20byte, hash[:]) {
result := LFSResult{
Name: curPath + string(fname),
SHA: curCommit.ID.String(),
@ -143,7 +140,7 @@ func FindLFSFile(repo *git.Repository, hash git.SHA1) ([]*LFSResult, error) {
}
resultsMap[curCommit.ID.String()+":"+curPath+string(fname)] = &result
} else if string(mode) == git.EntryModeTree.String() {
trees = append(trees, sha)
trees = append(trees, git.To40ByteSHA(sha20byte))
paths = append(paths, curPath+string(fname)+"/")
}
}