mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-28 22:14:20 -04:00
355 lines
9.6 KiB
Go
355 lines
9.6 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package models
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/base"
|
|
"code.gitea.io/gitea/modules/git"
|
|
"code.gitea.io/gitea/modules/indexer"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
|
|
"github.com/ethantkoenig/rupture"
|
|
)
|
|
|
|
// RepoIndexerStatus status of a repo's entry in the repo indexer
|
|
// For now, implicitly refers to default branch
|
|
type RepoIndexerStatus struct {
|
|
ID int64 `xorm:"pk autoincr"`
|
|
RepoID int64 `xorm:"INDEX"`
|
|
CommitSha string `xorm:"VARCHAR(40)"`
|
|
}
|
|
|
|
func (repo *Repository) getIndexerStatus() error {
|
|
if repo.IndexerStatus != nil {
|
|
return nil
|
|
}
|
|
status := &RepoIndexerStatus{RepoID: repo.ID}
|
|
has, err := x.Get(status)
|
|
if err != nil {
|
|
return err
|
|
} else if !has {
|
|
status.CommitSha = ""
|
|
}
|
|
repo.IndexerStatus = status
|
|
return nil
|
|
}
|
|
|
|
func (repo *Repository) updateIndexerStatus(sha string) error {
|
|
if err := repo.getIndexerStatus(); err != nil {
|
|
return err
|
|
}
|
|
if len(repo.IndexerStatus.CommitSha) == 0 {
|
|
repo.IndexerStatus.CommitSha = sha
|
|
_, err := x.Insert(repo.IndexerStatus)
|
|
return err
|
|
}
|
|
repo.IndexerStatus.CommitSha = sha
|
|
_, err := x.ID(repo.IndexerStatus.ID).Cols("commit_sha").
|
|
Update(repo.IndexerStatus)
|
|
return err
|
|
}
|
|
|
|
type repoIndexerOperation struct {
|
|
repo *Repository
|
|
deleted bool
|
|
watchers []chan<- error
|
|
}
|
|
|
|
var repoIndexerOperationQueue chan repoIndexerOperation
|
|
|
|
// InitRepoIndexer initialize the repo indexer
|
|
func InitRepoIndexer() {
|
|
if !setting.Indexer.RepoIndexerEnabled {
|
|
return
|
|
}
|
|
repoIndexerOperationQueue = make(chan repoIndexerOperation, setting.Indexer.UpdateQueueLength)
|
|
indexer.InitRepoIndexer(populateRepoIndexerAsynchronously)
|
|
go processRepoIndexerOperationQueue()
|
|
}
|
|
|
|
// populateRepoIndexerAsynchronously asynchronously populates the repo indexer
|
|
// with pre-existing data. This should only be run when the indexer is created
|
|
// for the first time.
|
|
func populateRepoIndexerAsynchronously() error {
|
|
exist, err := x.Table("repository").Exist()
|
|
if err != nil {
|
|
return err
|
|
} else if !exist {
|
|
return nil
|
|
}
|
|
|
|
// if there is any existing repo indexer metadata in the DB, delete it
|
|
// since we are starting afresh. Also, xorm requires deletes to have a
|
|
// condition, and we want to delete everything, thus 1=1.
|
|
if _, err := x.Where("1=1").Delete(new(RepoIndexerStatus)); err != nil {
|
|
return err
|
|
}
|
|
|
|
var maxRepoID int64
|
|
if _, err = x.Select("MAX(id)").Table("repository").Get(&maxRepoID); err != nil {
|
|
return err
|
|
}
|
|
go populateRepoIndexer(maxRepoID)
|
|
return nil
|
|
}
|
|
|
|
// populateRepoIndexer populate the repo indexer with pre-existing data. This
|
|
// should only be run when the indexer is created for the first time.
|
|
func populateRepoIndexer(maxRepoID int64) {
|
|
log.Info("Populating the repo indexer with existing repositories")
|
|
// start with the maximum existing repo ID and work backwards, so that we
|
|
// don't include repos that are created after gitea starts; such repos will
|
|
// already be added to the indexer, and we don't need to add them again.
|
|
for maxRepoID > 0 {
|
|
repos := make([]*Repository, 0, RepositoryListDefaultPageSize)
|
|
err := x.Where("id <= ?", maxRepoID).
|
|
OrderBy("id DESC").
|
|
Limit(RepositoryListDefaultPageSize).
|
|
Find(&repos)
|
|
if err != nil {
|
|
log.Error("populateRepoIndexer: %v", err)
|
|
return
|
|
} else if len(repos) == 0 {
|
|
break
|
|
}
|
|
for _, repo := range repos {
|
|
repoIndexerOperationQueue <- repoIndexerOperation{
|
|
repo: repo,
|
|
deleted: false,
|
|
}
|
|
maxRepoID = repo.ID - 1
|
|
}
|
|
}
|
|
log.Info("Done populating the repo indexer with existing repositories")
|
|
}
|
|
|
|
func updateRepoIndexer(repo *Repository) error {
|
|
sha, err := getDefaultBranchSha(repo)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
changes, err := getRepoChanges(repo, sha)
|
|
if err != nil {
|
|
return err
|
|
} else if changes == nil {
|
|
return nil
|
|
}
|
|
|
|
batch := indexer.RepoIndexerBatch()
|
|
for _, update := range changes.Updates {
|
|
if err := addUpdate(update, repo, batch); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
for _, filename := range changes.RemovedFilenames {
|
|
if err := addDelete(filename, repo, batch); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if err = batch.Flush(); err != nil {
|
|
return err
|
|
}
|
|
return repo.updateIndexerStatus(sha)
|
|
}
|
|
|
|
// repoChanges changes (file additions/updates/removals) to a repo
|
|
type repoChanges struct {
|
|
Updates []fileUpdate
|
|
RemovedFilenames []string
|
|
}
|
|
|
|
type fileUpdate struct {
|
|
Filename string
|
|
BlobSha string
|
|
}
|
|
|
|
func getDefaultBranchSha(repo *Repository) (string, error) {
|
|
stdout, err := git.NewCommand("show-ref", "-s", repo.DefaultBranch).RunInDir(repo.RepoPath())
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return strings.TrimSpace(stdout), nil
|
|
}
|
|
|
|
// getRepoChanges returns changes to repo since last indexer update
|
|
func getRepoChanges(repo *Repository, revision string) (*repoChanges, error) {
|
|
if err := repo.getIndexerStatus(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if len(repo.IndexerStatus.CommitSha) == 0 {
|
|
return genesisChanges(repo, revision)
|
|
}
|
|
return nonGenesisChanges(repo, revision)
|
|
}
|
|
|
|
func addUpdate(update fileUpdate, repo *Repository, batch rupture.FlushingBatch) error {
|
|
stdout, err := git.NewCommand("cat-file", "-s", update.BlobSha).
|
|
RunInDir(repo.RepoPath())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if size, err := strconv.Atoi(strings.TrimSpace(stdout)); err != nil {
|
|
return fmt.Errorf("Misformatted git cat-file output: %v", err)
|
|
} else if int64(size) > setting.Indexer.MaxIndexerFileSize {
|
|
return nil
|
|
}
|
|
|
|
fileContents, err := git.NewCommand("cat-file", "blob", update.BlobSha).
|
|
RunInDirBytes(repo.RepoPath())
|
|
if err != nil {
|
|
return err
|
|
} else if !base.IsTextFile(fileContents) {
|
|
return nil
|
|
}
|
|
indexerUpdate := indexer.RepoIndexerUpdate{
|
|
Filepath: update.Filename,
|
|
Op: indexer.RepoIndexerOpUpdate,
|
|
Data: &indexer.RepoIndexerData{
|
|
RepoID: repo.ID,
|
|
Content: string(fileContents),
|
|
},
|
|
}
|
|
return indexerUpdate.AddToFlushingBatch(batch)
|
|
}
|
|
|
|
func addDelete(filename string, repo *Repository, batch rupture.FlushingBatch) error {
|
|
indexerUpdate := indexer.RepoIndexerUpdate{
|
|
Filepath: filename,
|
|
Op: indexer.RepoIndexerOpDelete,
|
|
Data: &indexer.RepoIndexerData{
|
|
RepoID: repo.ID,
|
|
},
|
|
}
|
|
return indexerUpdate.AddToFlushingBatch(batch)
|
|
}
|
|
|
|
// parseGitLsTreeOutput parses the output of a `git ls-tree -r --full-name` command
|
|
func parseGitLsTreeOutput(stdout []byte) ([]fileUpdate, error) {
|
|
entries, err := git.ParseTreeEntries(stdout)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
updates := make([]fileUpdate, len(entries))
|
|
for i, entry := range entries {
|
|
updates[i] = fileUpdate{
|
|
Filename: entry.Name(),
|
|
BlobSha: entry.ID.String(),
|
|
}
|
|
}
|
|
return updates, nil
|
|
}
|
|
|
|
// genesisChanges get changes to add repo to the indexer for the first time
|
|
func genesisChanges(repo *Repository, revision string) (*repoChanges, error) {
|
|
var changes repoChanges
|
|
stdout, err := git.NewCommand("ls-tree", "--full-tree", "-r", revision).
|
|
RunInDirBytes(repo.RepoPath())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
changes.Updates, err = parseGitLsTreeOutput(stdout)
|
|
return &changes, err
|
|
}
|
|
|
|
// nonGenesisChanges get changes since the previous indexer update
|
|
func nonGenesisChanges(repo *Repository, revision string) (*repoChanges, error) {
|
|
diffCmd := git.NewCommand("diff", "--name-status",
|
|
repo.IndexerStatus.CommitSha, revision)
|
|
stdout, err := diffCmd.RunInDir(repo.RepoPath())
|
|
if err != nil {
|
|
// previous commit sha may have been removed by a force push, so
|
|
// try rebuilding from scratch
|
|
log.Warn("git diff: %v", err)
|
|
if err = indexer.DeleteRepoFromIndexer(repo.ID); err != nil {
|
|
return nil, err
|
|
}
|
|
return genesisChanges(repo, revision)
|
|
}
|
|
var changes repoChanges
|
|
updatedFilenames := make([]string, 0, 10)
|
|
for _, line := range strings.Split(stdout, "\n") {
|
|
line = strings.TrimSpace(line)
|
|
if len(line) == 0 {
|
|
continue
|
|
}
|
|
filename := strings.TrimSpace(line[1:])
|
|
if len(filename) == 0 {
|
|
continue
|
|
} else if filename[0] == '"' {
|
|
filename, err = strconv.Unquote(filename)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
switch status := line[0]; status {
|
|
case 'M', 'A':
|
|
updatedFilenames = append(updatedFilenames, filename)
|
|
case 'D':
|
|
changes.RemovedFilenames = append(changes.RemovedFilenames, filename)
|
|
default:
|
|
log.Warn("Unrecognized status: %c (line=%s)", status, line)
|
|
}
|
|
}
|
|
|
|
cmd := git.NewCommand("ls-tree", "--full-tree", revision, "--")
|
|
cmd.AddArguments(updatedFilenames...)
|
|
lsTreeStdout, err := cmd.RunInDirBytes(repo.RepoPath())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
changes.Updates, err = parseGitLsTreeOutput(lsTreeStdout)
|
|
return &changes, err
|
|
}
|
|
|
|
func processRepoIndexerOperationQueue() {
|
|
for {
|
|
op := <-repoIndexerOperationQueue
|
|
var err error
|
|
if op.deleted {
|
|
if err = indexer.DeleteRepoFromIndexer(op.repo.ID); err != nil {
|
|
log.Error("DeleteRepoFromIndexer: %v", err)
|
|
}
|
|
} else {
|
|
if err = updateRepoIndexer(op.repo); err != nil {
|
|
log.Error("updateRepoIndexer: %v", err)
|
|
}
|
|
}
|
|
for _, watcher := range op.watchers {
|
|
watcher <- err
|
|
}
|
|
}
|
|
}
|
|
|
|
// DeleteRepoFromIndexer remove all of a repository's entries from the indexer
|
|
func DeleteRepoFromIndexer(repo *Repository, watchers ...chan<- error) {
|
|
addOperationToQueue(repoIndexerOperation{repo: repo, deleted: true, watchers: watchers})
|
|
}
|
|
|
|
// UpdateRepoIndexer update a repository's entries in the indexer
|
|
func UpdateRepoIndexer(repo *Repository, watchers ...chan<- error) {
|
|
addOperationToQueue(repoIndexerOperation{repo: repo, deleted: false, watchers: watchers})
|
|
}
|
|
|
|
func addOperationToQueue(op repoIndexerOperation) {
|
|
if !setting.Indexer.RepoIndexerEnabled {
|
|
return
|
|
}
|
|
select {
|
|
case repoIndexerOperationQueue <- op:
|
|
break
|
|
default:
|
|
go func() {
|
|
repoIndexerOperationQueue <- op
|
|
}()
|
|
}
|
|
}
|