Move database operations of merging a pull request to post receive hook and add a transaction (#30805)

Merging PR may fail because of various problems. The pull request may
have a dirty state because there is no transaction when merging a pull
request. ref
https://github.com/go-gitea/gitea/pull/25741#issuecomment-2074126393

This PR moves all database update operations to post-receive handler for
merging a pull request and having a database transaction. That means if
database operations fail, then the git merging will fail, the git client
will get a fail result.

There are already many tests for pull request merging, so we don't need
to add a new one.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit ebf0c969403d91ed80745ff5bd7dfbdb08174fc7)

Conflicts:
	modules/private/hook.go
	routers/private/hook_post_receive.go
	trivial conflicts because
	  263a716cb5 * Performance optimization for git push (#30104)
	was not cherry-picked and because of
	  998a431747 Do not update PRs based on events that happened before they existed
This commit is contained in:
Lunny Xiao 2024-05-07 15:36:48 +08:00 committed by Earl Warren
parent 1f56a49f28
commit eb792d9f8a
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8 changed files with 150 additions and 18 deletions

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@ -15,6 +15,7 @@ import (
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/repository"
)
// Update updates pull request with base branch.
@ -72,7 +73,7 @@ func Update(ctx context.Context, pr *issues_model.PullRequest, doer *user_model.
BaseBranch: pr.HeadBranch,
}
_, err = doMergeAndPush(ctx, reversePR, doer, repo_model.MergeStyleMerge, "", message)
_, err = doMergeAndPush(ctx, reversePR, doer, repo_model.MergeStyleMerge, "", message, repository.PushTriggerPRUpdateWithBase)
defer func() {
AddTestPullRequestTask(ctx, doer, reversePR.HeadRepo.ID, reversePR.HeadBranch, false, "", "", 0)