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forgejo/modules/git/notes_nogogit.go
zeripath 001dbf100d
Defer Last Commit Info (#16467)
One of the biggest reasons for slow repository browsing is that we wait
until last commit information has been generated for all files in the
repository.

This PR proposes deferring this generation to a new POST endpoint that
does the look up outside of the main page request.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-10-08 15:08:22 +02:00

87 lines
2.1 KiB
Go

// Copyright 2019 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.
//go:build !gogit
// +build !gogit
package git
import (
"context"
"io"
"strings"
"code.gitea.io/gitea/modules/log"
)
// GetNote retrieves the git-notes data for a given commit.
// FIXME: Add LastCommitCache support
func GetNote(ctx context.Context, repo *Repository, commitID string, note *Note) error {
log.Trace("Searching for git note corresponding to the commit %q in the repository %q", commitID, repo.Path)
notes, err := repo.GetCommit(NotesRef)
if err != nil {
log.Error("Unable to get commit from ref %q. Error: %v", NotesRef, err)
return err
}
path := ""
tree := &notes.Tree
log.Trace("Found tree with ID %q while searching for git note corresponding to the commit %q", tree.ID, commitID)
var entry *TreeEntry
originalCommitID := commitID
for len(commitID) > 2 {
entry, err = tree.GetTreeEntryByPath(commitID)
if err == nil {
path += commitID
break
}
if IsErrNotExist(err) {
tree, err = tree.SubTree(commitID[0:2])
path += commitID[0:2] + "/"
commitID = commitID[2:]
}
if err != nil {
log.Error("Unable to find git note corresponding to the commit %q. Error: %v", originalCommitID, err)
return err
}
}
blob := entry.Blob()
dataRc, err := blob.DataAsync()
if err != nil {
log.Error("Unable to read blob with ID %q. Error: %v", blob.ID, err)
return err
}
closed := false
defer func() {
if !closed {
_ = dataRc.Close()
}
}()
d, err := io.ReadAll(dataRc)
if err != nil {
log.Error("Unable to read blob with ID %q. Error: %v", blob.ID, err)
return err
}
_ = dataRc.Close()
closed = true
note.Message = d
treePath := ""
if idx := strings.LastIndex(path, "/"); idx > -1 {
treePath = path[:idx]
path = path[idx+1:]
}
lastCommits, err := GetLastCommitForPaths(ctx, nil, notes, treePath, []string{path})
if err != nil {
log.Error("Unable to get the commit for the path %q. Error: %v", treePath, err)
return err
}
note.Commit = lastCommits[path]
return nil
}