Files
gitea/services/pull/merge_ff_only.go
Lunny Xiao 1463426a27 Use merge tree to detect conflicts when possible (#36400)
In Git 2.38, the `merge-tree` command introduced the `--write-tree`
option, which works directly on bare repositories. In Git 2.40, a new parameter `--merge-base` introduced so we require Git 2.40 to use the merge tree feature.

This option produces the merged tree object ID, allowing us to perform
diffs between commits without creating a temporary repository. By
avoiding the overhead of setting up and tearing down temporary repos,
this approach delivers a notable performance improvement.

It also fixes a possible situation that conflict files might be empty
but it's a conflict status according to
https://git-scm.com/docs/git-merge-tree#_mistakes_to_avoid

Replace #35542

---------

Signed-off-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2026-01-27 11:57:20 -08:00

22 lines
724 B
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package pull
import (
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/git/gitcmd"
"code.gitea.io/gitea/modules/log"
)
// doMergeStyleFastForwardOnly merges the tracking into the current HEAD - which is assumed to be staging branch (equal to the pr.BaseBranch)
func doMergeStyleFastForwardOnly(ctx *mergeContext) error {
cmd := gitcmd.NewCommand("merge", "--ff-only").AddDynamicArguments(tmpRepoTrackingBranch)
if err := runMergeCommand(ctx, repo_model.MergeStyleFastForwardOnly, cmd); err != nil {
log.Error("%-v Unable to merge tracking into base: %v", ctx.pr, err)
return err
}
return nil
}