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Refactor the usage of batch catfile (#31754)

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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.
This commit is contained in:
Lunny Xiao 2024-08-21 01:04:57 +08:00 committed by GitHub
parent 8b92eba21f
commit c03baab678
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
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
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@ -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_nogogit.go
View File

@ -26,9 +26,12 @@ 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
@ -64,9 +67,13 @@ 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_nogogit.go
View File

@ -124,7 +124,10 @@ 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_nogogit.go
View File

@ -46,7 +46,10 @@ 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

84
modules/git/repo_base_nogogit.go
View File

@ -26,14 +26,10 @@ type Repository struct {
gpgSettings *GPGSettings
batchInUse bool
batchCancel context.CancelFunc
batchReader *bufio.Reader
batchWriter WriteCloserError
batch *Batch
checkInUse bool
checkCancel context.CancelFunc
checkReader *bufio.Reader
checkWriter WriteCloserError
check *Batch
Ctx context.Context
LastCommitCache *LastCommitCache
@ -55,63 +51,75 @@ func OpenRepository(ctx context.Context, repoPath string) (*Repository, error) {
return nil, util.NewNotExistErrorf("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
}
}
if !repo.batchInUse {
repo.batchInUse = true
return repo.batchWriter, repo.batchReader, func() {
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
}
}
if !repo.checkInUse {
repo.checkInUse = true
return repo.checkWriter, repo.checkReader, func() {
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_nogogit.go
View File

@ -22,9 +22,13 @@ 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
@ -39,9 +43,13 @@ 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_nogogit.go
View File

@ -33,9 +33,12 @@ 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
}
@ -61,12 +64,19 @@ 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"))
@ -143,7 +153,10 @@ 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_nogogit.go
View File

@ -20,7 +20,10 @@ import (
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_nogogit.go
View File

@ -31,9 +31,12 @@ 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
}
@ -89,7 +92,10 @@ 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_nogogit.go
View File

@ -10,7 +10,10 @@ import (
)
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"))

8
modules/git/tree_entry_nogogit.go
View File

@ -42,9 +42,13 @@ 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

5
modules/git/tree_nogogit.go
View File

@ -33,7 +33,10 @@ 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"))

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"
@ -189,21 +189,23 @@ 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 {