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[PORT] Refactor the usage of batch catfile (gitea#31754)

Browse source 
When opening a repository, it will call `ensureValidRepository` and also
`CatFileBatch`. But sometimes these will not be used until repository
closed. So it's a waste of CPU to invoke 3 times git command for every
open repository.

This PR removed all of these from `OpenRepository` but only kept
checking whether the folder exists. When a batch is necessary, the
necessary functions will be invoked.

---
Conflict resolution: Because of the removal of go-git in (#4941)
`_nogogit.go` files were either renamed or merged into the 'common'
file. Git does handle the renames correctly, but for those that were
merged has to be manually copied pasted over. The patch looks the same,
201 additions 90 deletions as the original patch.

(cherry picked from commit c03baab678ba5b2e9d974aea147e660417f5d3f7)
This commit is contained in:
Lunny Xiao 2024-08-21 01:04:57 +08:00 committed by Gusted
parent cbedd7e5be
commit 0ca13c5eae
No known key found for this signature in database
GPG key ID: FD821B732837125F
15 changed files with 201 additions and 90 deletions
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46
modules/git/batch.go Normal file
View file

@ -0,0 +1,46 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"bufio"
"context"
)
type Batch struct {
cancel context.CancelFunc
Reader *bufio.Reader
Writer WriteCloserError
}
func (repo *Repository) NewBatch(ctx context.Context) (*Batch, error) {
// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
if err := ensureValidGitRepository(ctx, repo.Path); err != nil {
return nil, err
}
var batch Batch
batch.Writer, batch.Reader, batch.cancel = catFileBatch(ctx, repo.Path)
return &batch, nil
}
func (repo *Repository) NewBatchCheck(ctx context.Context) (*Batch, error) {
// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
if err := ensureValidGitRepository(ctx, repo.Path); err != nil {
return nil, err
}
var check Batch
check.Writer, check.Reader, check.cancel = catFileBatchCheck(ctx, repo.Path)
return &check, nil
}
func (b *Batch) Close() {
if b.cancel != nil {
b.cancel()
b.Reader = nil
b.Writer = nil
b.cancel = nil
}
}

12
modules/git/batch_reader.go
View file

@ -26,10 +26,10 @@ type WriteCloserError interface {
CloseWithError(err error) error
}
// EnsureValidGitRepository runs git rev-parse in the repository path - thus ensuring that the repository is a valid repository.
// ensureValidGitRepository runs git rev-parse in the repository path - thus ensuring that the repository is a valid repository.
// Run before opening git cat-file.
// This is needed otherwise the git cat-file will hang for invalid repositories.
func EnsureValidGitRepository(ctx context.Context, repoPath string) error {
func ensureValidGitRepository(ctx context.Context, repoPath string) error {
stderr := strings.Builder{}
err := NewCommand(ctx, "rev-parse").
SetDescription(fmt.Sprintf("%s rev-parse [repo_path: %s]", GitExecutable, repoPath)).
@ -43,8 +43,8 @@ func EnsureValidGitRepository(ctx context.Context, repoPath string) error {
return nil
}
// CatFileBatchCheck opens git cat-file --batch-check in the provided repo and returns a stdin pipe, a stdout reader and cancel function
func CatFileBatchCheck(ctx context.Context, repoPath string) (WriteCloserError, *bufio.Reader, func()) {
// catFileBatchCheck opens git cat-file --batch-check in the provided repo and returns a stdin pipe, a stdout reader and cancel function
func catFileBatchCheck(ctx context.Context, repoPath string) (WriteCloserError, *bufio.Reader, func()) {
batchStdinReader, batchStdinWriter := io.Pipe()
batchStdoutReader, batchStdoutWriter := io.Pipe()
ctx, ctxCancel := context.WithCancel(ctx)
@ -93,8 +93,8 @@ func CatFileBatchCheck(ctx context.Context, repoPath string) (WriteCloserError,
return batchStdinWriter, batchReader, cancel
}
// CatFileBatch opens git cat-file --batch in the provided repo and returns a stdin pipe, a stdout reader and cancel function
func CatFileBatch(ctx context.Context, repoPath string) (WriteCloserError, *bufio.Reader, func()) {
// catFileBatch opens git cat-file --batch in the provided repo and returns a stdin pipe, a stdout reader and cancel function
func catFileBatch(ctx context.Context, repoPath string) (WriteCloserError, *bufio.Reader, func()) {
// We often want to 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
batchStdinReader, batchStdinWriter := io.Pipe()

15
modules/git/blob.go
View file

@ -28,9 +28,12 @@ type Blob struct {
// DataAsync gets a ReadCloser for the contents of a blob without reading it all.
// Calling the Close function on the result will discard all unread output.
func (b *Blob) DataAsync() (io.ReadCloser, error) {
wr, rd, cancel := b.repo.CatFileBatch(b.repo.Ctx)
wr, rd, cancel, err := b.repo.CatFileBatch(b.repo.Ctx)
if err != nil {
return nil, err
}
_, err := wr.Write([]byte(b.ID.String() + "\n"))
_, err = wr.Write([]byte(b.ID.String() + "\n"))
if err != nil {
cancel()
return nil, err
@ -66,9 +69,13 @@ func (b *Blob) Size() int64 {
return b.size
}
wr, rd, cancel := b.repo.CatFileBatchCheck(b.repo.Ctx)
wr, rd, cancel, err := b.repo.CatFileBatchCheck(b.repo.Ctx)
if err != nil {
log.Debug("error whilst reading size for %s in %s. Error: %v", b.ID.String(), b.repo.Path, err)
return 0
}
defer cancel()
_, err := wr.Write([]byte(b.ID.String() + "\n"))
_, err = wr.Write([]byte(b.ID.String() + "\n"))
if err != nil {
log.Debug("error whilst reading size for %s in %s. Error: %v", b.ID.String(), b.repo.Path, err)
return 0

5
modules/git/commit_info.go
View file

@ -129,7 +129,10 @@ func GetLastCommitForPaths(ctx context.Context, commit *Commit, treePath string,
return nil, err
}
batchStdinWriter, batchReader, cancel := commit.repo.CatFileBatch(ctx)
batchStdinWriter, batchReader, cancel, err := commit.repo.CatFileBatch(ctx)
if err != nil {
return nil, err
}
defer cancel()
commitsMap := map[string]*Commit{}

5
modules/git/pipeline/lfs.go
View file

@ -67,7 +67,10 @@ func FindLFSFile(repo *git.Repository, objectID git.ObjectID) ([]*LFSResult, err
// 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 := repo.CatFileBatch(repo.Ctx)
batchStdinWriter, batchReader, cancel, err := repo.CatFileBatch(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
// We'll use a scanner for the revList because it's simpler than a bufio.Reader

96
modules/git/repo_base.go
View file

@ -21,15 +21,11 @@ type Repository struct {
gpgSettings *GPGSettings
batchInUse bool
batchCancel context.CancelFunc
batchReader *bufio.Reader
batchWriter WriteCloserError
batchInUse bool
batch *Batch
checkInUse bool
checkCancel context.CancelFunc
checkReader *bufio.Reader
checkWriter WriteCloserError
checkInUse bool
check *Batch
Ctx context.Context
LastCommitCache *LastCommitCache
@ -51,63 +47,75 @@ func OpenRepository(ctx context.Context, repoPath string) (*Repository, error) {
return nil, errors.New("no such file or directory")
}
// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
if err := EnsureValidGitRepository(ctx, repoPath); err != nil {
return nil, err
}
repo := &Repository{
return &Repository{
Path: repoPath,
tagCache: newObjectCache(),
Ctx: ctx,
}
repo.batchWriter, repo.batchReader, repo.batchCancel = CatFileBatch(ctx, repoPath)
repo.checkWriter, repo.checkReader, repo.checkCancel = CatFileBatchCheck(ctx, repoPath)
return repo, nil
}, nil
}
// CatFileBatch obtains a CatFileBatch for this repository
func (repo *Repository) CatFileBatch(ctx context.Context) (WriteCloserError, *bufio.Reader, func()) {
if repo.batchCancel == nil || repo.batchInUse {
log.Debug("Opening temporary cat file batch for: %s", repo.Path)
return CatFileBatch(ctx, repo.Path)
func (repo *Repository) CatFileBatch(ctx context.Context) (WriteCloserError, *bufio.Reader, func(), error) {
if repo.batch == nil {
var err error
repo.batch, err = repo.NewBatch(ctx)
if err != nil {
return nil, nil, nil, err
}
}
repo.batchInUse = true
return repo.batchWriter, repo.batchReader, func() {
repo.batchInUse = false
if !repo.batchInUse {
repo.batchInUse = true
return repo.batch.Writer, repo.batch.Reader, func() {
repo.batchInUse = false
}, nil
}
log.Debug("Opening temporary cat file batch for: %s", repo.Path)
tempBatch, err := repo.NewBatch(ctx)
if err != nil {
return nil, nil, nil, err
}
return tempBatch.Writer, tempBatch.Reader, tempBatch.Close, nil
}
// CatFileBatchCheck obtains a CatFileBatchCheck for this repository
func (repo *Repository) CatFileBatchCheck(ctx context.Context) (WriteCloserError, *bufio.Reader, func()) {
if repo.checkCancel == nil || repo.checkInUse {
log.Debug("Opening temporary cat file batch-check for: %s", repo.Path)
return CatFileBatchCheck(ctx, repo.Path)
func (repo *Repository) CatFileBatchCheck(ctx context.Context) (WriteCloserError, *bufio.Reader, func(), error) {
if repo.check == nil {
var err error
repo.check, err = repo.NewBatchCheck(ctx)
if err != nil {
return nil, nil, nil, err
}
}
repo.checkInUse = true
return repo.checkWriter, repo.checkReader, func() {
repo.checkInUse = false
if !repo.checkInUse {
repo.checkInUse = true
return repo.check.Writer, repo.check.Reader, func() {
repo.checkInUse = false
}, nil
}
log.Debug("Opening temporary cat file batch-check for: %s", repo.Path)
tempBatchCheck, err := repo.NewBatchCheck(ctx)
if err != nil {
return nil, nil, nil, err
}
return tempBatchCheck.Writer, tempBatchCheck.Reader, tempBatchCheck.Close, nil
}
func (repo *Repository) Close() error {
if repo == nil {
return nil
}
if repo.batchCancel != nil {
repo.batchCancel()
repo.batchReader = nil
repo.batchWriter = nil
repo.batchCancel = nil
if repo.batch != nil {
repo.batch.Close()
repo.batch = nil
repo.batchInUse = false
}
if repo.checkCancel != nil {
repo.checkCancel()
repo.checkCancel = nil
repo.checkReader = nil
repo.checkWriter = nil
if repo.check != nil {
repo.check.Close()
repo.check = nil
repo.checkInUse = false
}
repo.LastCommitCache = nil

16
modules/git/repo_branch.go
View file

@ -169,9 +169,13 @@ func (repo *Repository) IsObjectExist(name string) bool {
return false
}
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatchCheck(repo.Ctx)
if err != nil {
log.Debug("Error writing to CatFileBatchCheck %v", err)
return false
}
defer cancel()
_, err := wr.Write([]byte(name + "\n"))
_, err = wr.Write([]byte(name + "\n"))
if err != nil {
log.Debug("Error writing to CatFileBatchCheck %v", err)
return false
@ -186,9 +190,13 @@ func (repo *Repository) IsReferenceExist(name string) bool {
return false
}
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatchCheck(repo.Ctx)
if err != nil {
log.Debug("Error writing to CatFileBatchCheck %v", err)
return false
}
defer cancel()
_, err := wr.Write([]byte(name + "\n"))
_, err = wr.Write([]byte(name + "\n"))
if err != nil {
log.Debug("Error writing to CatFileBatchCheck %v", err)
return false

21
modules/git/repo_commit.go
View file

@ -536,9 +536,12 @@ func (repo *Repository) ResolveReference(name string) (string, error) {
// GetRefCommitID returns the last commit ID string of given reference (branch or tag).
func (repo *Repository) GetRefCommitID(name string) (string, error) {
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatchCheck(repo.Ctx)
if err != nil {
return "", err
}
defer cancel()
_, err := wr.Write([]byte(name + "\n"))
_, err = wr.Write([]byte(name + "\n"))
if err != nil {
return "", err
}
@ -564,12 +567,19 @@ func (repo *Repository) RemoveReference(name string) error {
// IsCommitExist returns true if given commit exists in current repository.
func (repo *Repository) IsCommitExist(name string) bool {
if err := ensureValidGitRepository(repo.Ctx, repo.Path); err != nil {
log.Error("IsCommitExist: %v", err)
return false
}
_, _, err := NewCommand(repo.Ctx, "cat-file", "-e").AddDynamicArguments(name).RunStdString(&RunOpts{Dir: repo.Path})
return err == nil
}
func (repo *Repository) getCommit(id ObjectID) (*Commit, error) {
wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatch(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
_, _ = wr.Write([]byte(id.String() + "\n"))
@ -646,7 +656,10 @@ func (repo *Repository) ConvertToGitID(commitID string) (ObjectID, error) {
}
}
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatchCheck(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
_, err = wr.Write([]byte(commitID + "\n"))
if err != nil {

5
modules/git/repo_language_stats.go
View file

@ -60,7 +60,10 @@ func mergeLanguageStats(stats map[string]int64) map[string]int64 {
func (repo *Repository) GetLanguageStats(commitID string) (map[string]int64, error) {
// We will feed the commit IDs in order into cat-file --batch, followed by blobs as necessary.
// so let's create a batch stdin and stdout
batchStdinWriter, batchReader, cancel := repo.CatFileBatch(repo.Ctx)
batchStdinWriter, batchReader, cancel, err := repo.CatFileBatch(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
writeID := func(id string) error {

12
modules/git/repo_tag.go
View file

@ -257,9 +257,12 @@ func (repo *Repository) GetTags(skip, limit int) (tags []string, err error) {
// GetTagType gets the type of the tag, either commit (simple) or tag (annotated)
func (repo *Repository) GetTagType(id ObjectID) (string, error) {
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatchCheck(repo.Ctx)
if err != nil {
return "", err
}
defer cancel()
_, err := wr.Write([]byte(id.String() + "\n"))
_, err = wr.Write([]byte(id.String() + "\n"))
if err != nil {
return "", err
}
@ -315,7 +318,10 @@ func (repo *Repository) getTag(tagID ObjectID, name string) (*Tag, error) {
}
// The tag is an annotated tag with a message.
wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatch(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
if _, err := wr.Write([]byte(tagID.String() + "\n")); err != nil {

5
modules/git/repo_tree.go
View file

@ -68,7 +68,10 @@ func (repo *Repository) CommitTree(author, committer *Signature, tree *Tree, opt
}
func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
wr, rd, cancel, err := repo.CatFileBatch(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
_, _ = wr.Write([]byte(id.String() + "\n"))

5
modules/git/tree.go
View file

@ -41,7 +41,10 @@ func (t *Tree) ListEntries() (Entries, error) {
}
if t.repo != nil {
wr, rd, cancel := t.repo.CatFileBatch(t.repo.Ctx)
wr, rd, cancel, err := t.repo.CatFileBatch(t.repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
_, _ = wr.Write([]byte(t.ID.String() + "\n"))

8
modules/git/tree_entry.go
View file

@ -47,9 +47,13 @@ func (te *TreeEntry) Size() int64 {
return te.size
}
wr, rd, cancel := te.ptree.repo.CatFileBatchCheck(te.ptree.repo.Ctx)
wr, rd, cancel, err := te.ptree.repo.CatFileBatchCheck(te.ptree.repo.Ctx)
if err != nil {
log.Debug("error whilst reading size for %s in %s. Error: %v", te.ID.String(), te.ptree.repo.Path, err)
return 0
}
defer cancel()
_, err := wr.Write([]byte(te.ID.String() + "\n"))
_, err = wr.Write([]byte(te.ID.String() + "\n"))
if err != nil {
log.Debug("error whilst reading size for %s in %s. Error: %v", te.ID.String(), te.ptree.repo.Path, err)
return 0

20
modules/indexer/code/bleve/bleve.go
View file

@ -16,10 +16,10 @@ import (
"code.gitea.io/gitea/modules/analyze"
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/indexer/code/internal"
indexer_internal "code.gitea.io/gitea/modules/indexer/internal"
inner_bleve "code.gitea.io/gitea/modules/indexer/internal/bleve"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/typesniffer"
@ -193,21 +193,23 @@ func (b *Indexer) addDelete(filename string, repo *repo_model.Repository, batch
func (b *Indexer) Index(ctx context.Context, repo *repo_model.Repository, sha string, changes *internal.RepoChanges) error {
batch := inner_bleve.NewFlushingBatch(b.inner.Indexer, maxBatchSize)
if len(changes.Updates) > 0 {
// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
if err := git.EnsureValidGitRepository(ctx, repo.RepoPath()); err != nil {
log.Error("Unable to open git repo: %s for %-v: %v", repo.RepoPath(), repo, err)
r, err := gitrepo.OpenRepository(ctx, repo)
if err != nil {
return err
}
batchWriter, batchReader, cancel := git.CatFileBatch(ctx, repo.RepoPath())
defer cancel()
defer r.Close()
gitBatch, err := r.NewBatch(ctx)
if err != nil {
return err
}
defer gitBatch.Close()
for _, update := range changes.Updates {
if err := b.addUpdate(ctx, batchWriter, batchReader, sha, update, repo, batch); err != nil {
if err := b.addUpdate(ctx, gitBatch.Writer, gitBatch.Reader, sha, update, repo, batch); err != nil {
return err
}
}
cancel()
gitBatch.Close()
}
for _, filename := range changes.RemovedFilenames {
if err := b.addDelete(filename, repo, batch); err != nil {

20
modules/indexer/code/elasticsearch/elasticsearch.go
View file

@ -15,11 +15,11 @@ import (
"code.gitea.io/gitea/modules/analyze"
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/indexer/code/internal"
indexer_internal "code.gitea.io/gitea/modules/indexer/internal"
inner_elasticsearch "code.gitea.io/gitea/modules/indexer/internal/elasticsearch"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/typesniffer"
@ -154,17 +154,19 @@ func (b *Indexer) addDelete(filename string, repo *repo_model.Repository) elasti
func (b *Indexer) Index(ctx context.Context, repo *repo_model.Repository, sha string, changes *internal.RepoChanges) error {
reqs := make([]elastic.BulkableRequest, 0)
if len(changes.Updates) > 0 {
// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
if err := git.EnsureValidGitRepository(ctx, repo.RepoPath()); err != nil {
log.Error("Unable to open git repo: %s for %-v: %v", repo.RepoPath(), repo, err)
r, err := gitrepo.OpenRepository(ctx, repo)
if err != nil {
return err
}
batchWriter, batchReader, cancel := git.CatFileBatch(ctx, repo.RepoPath())
defer cancel()
defer r.Close()
batch, err := r.NewBatch(ctx)
if err != nil {
return err
}
defer batch.Close()
for _, update := range changes.Updates {
updateReqs, err := b.addUpdate(ctx, batchWriter, batchReader, sha, update, repo)
updateReqs, err := b.addUpdate(ctx, batch.Writer, batch.Reader, sha, update, repo)
if err != nil {
return err
}
@ -172,7 +174,7 @@ func (b *Indexer) Index(ctx context.Context, repo *repo_model.Repository, sha st
reqs = append(reqs, updateReqs...)
}
}
cancel()
batch.Close()
}
for _, filename := range changes.RemovedFilenames {