Monorepo for Tangled
knotmirror/xrpc: `cat-file` based `listCommits`
performance improvement for `listCommits`
Signed-off-by: Seongmin Lee <git@boltless.me>
authored by
Seongmin Lee
and committed by
Tangled
(May 28, 2026, 6:00 PM +0300)
ade27201
796ecc5b
+76
-14
+76
-14
knotmirror/xrpc/git_list_commits.go
+76
-14
knotmirror/xrpc/git_list_commits.go
···
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1
package xrpc
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import (
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+
"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"os/exec"
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"strconv"
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"github.com/bluesky-social/indigo/atproto/atclient"
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"github.com/bluesky-social/indigo/atproto/syntax"
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"tangled.org/core/knotserver/git"
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"github.com/go-git/go-git/v5/plumbing"
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"github.com/go-git/go-git/v5/plumbing/object"
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"tangled.org/core/knotmirror/xrpc/gitea"
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"tangled.org/core/types"
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)
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···
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if err != nil {
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return nil, fmt.Errorf("resolving repo did: %w", err)
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}
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rev := ref
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if rev == "" {
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rev = "HEAD"
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}
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gr, err := git.Open(repoPath, ref)
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// -> []hash
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logs, err := func(repoPath, rev string) ([]byte, error) {
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out, err := exec.Command(
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"git",
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"rev-list",
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rev,
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fmt.Sprintf("--skip=%d", cursor),
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fmt.Sprintf("--max-count=%d", limit),
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).Output()
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if err != nil {
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return nil, err
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}
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return bytes.TrimSpace(out), nil
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}(repoPath, rev)
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if err != nil {
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return nil, fmt.Errorf("opening git repo: %w", err)
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return nil, fmt.Errorf("reading rev-list: %w", err)
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}
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offset := int(cursor)
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commits, err := gr.Commits(offset, limit)
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commits, err := func(repoPath string, logs []byte) ([]*object.Commit, error) {
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bw, br, cancel := gitea.CatFileBatch(ctx, repoPath)
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defer cancel()
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var commits []*object.Commit
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for commitId := range bytes.SplitSeq(logs, []byte{'\n'}) {
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_, err := bw.Write([]byte(string(commitId) + "\n"))
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if err != nil {
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return nil, err
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}
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_, typ, size, err := gitea.ReadBatchLine(br)
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if err != nil {
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return nil, err
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}
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if typ != "commit" {
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if err := gitea.DiscardFull(br, size+1); err != nil {
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return nil, err
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}
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return nil, fmt.Errorf("unexpected type: %s for commit id: %s", typ, commitId)
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}
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c, err := gitea.ReadCommit(plumbing.NewHash(string(commitId)), io.LimitReader(br, size))
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if _, err := br.Discard(1); err != nil {
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return nil, err
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}
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commits = append(commits, c)
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}
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return commits, nil
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}(repoPath, logs)
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if err != nil {
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return nil, fmt.Errorf("listing git commits: %w", err)
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return nil, fmt.Errorf("parsing commits: %w", err)
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}
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-
tcommits := make([]types.Commit, len(commits))
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for i, c := range commits {
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tcommits[i].FromGoGitCommit(c)
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// -> total
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total, err := func(repoPath, rev string) (int, error) {
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out, err := exec.Command(
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"git",
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"rev-list",
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rev,
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"--count",
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).Output()
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if err != nil {
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return 0, err
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}
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count, err := strconv.Atoi(string(bytes.TrimSpace(out)))
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if err != nil {
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return 0, err
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}
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return count, nil
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}(repoPath, rev)
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if err != nil {
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return nil, fmt.Errorf("parsing total commits: %w", err)
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}
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total, err := gr.TotalCommits()
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-
if err != nil {
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return nil, fmt.Errorf("counting total commits: %w", err)
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+
tcommits := make([]types.Commit, len(commits))
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for i, commit := range commits {
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tcommits[i].FromGoGitCommit(commit)
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}
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return &types.RepoLogResponse{
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Commits: tcommits,
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Ref: ref,
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Page: (offset / limit) + 1,
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+
Page: (int(cursor) / limit) + 1,
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PerPage: limit,
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Total: total,
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Log: true,