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Code Issues Projects Releases Packages Wiki Activity Actions 8

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

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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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GPG key ID: 0579CB2928A78A00
8 changed files with 150 additions and 18 deletions
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63
routers/private/hook_post_receive.go
View file

@ -4,20 +4,26 @@
package private
import (
"context"
"fmt"
"net/http"
"strconv"
"time"
"code.gitea.io/gitea/models/db"
git_model "code.gitea.io/gitea/models/git"
issues_model "code.gitea.io/gitea/models/issues"
pull_model "code.gitea.io/gitea/models/pull"
repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/private"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
timeutil "code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
"code.gitea.io/gitea/modules/web"
gitea_context "code.gitea.io/gitea/services/context"
@ -155,6 +161,14 @@ func HookPostReceive(ctx *gitea_context.PrivateContext) {
}
}
// handle pull request merging, a pull request action should push at least 1 commit
if opts.PushTrigger == repo_module.PushTriggerPRMergeToBase {
handlePullRequestMerging(ctx, opts, ownerName, repoName, updates)
if ctx.Written() {
return
}
}
// Handle Push Options
if len(opts.GitPushOptions) > 0 {
// load the repository
@ -302,3 +316,52 @@ func HookPostReceive(ctx *gitea_context.PrivateContext) {
RepoWasEmpty: wasEmpty,
})
}
func loadContextCacheUser(ctx context.Context, id int64) (*user_model.User, error) {
return cache.GetWithContextCache(ctx, "hook_post_receive_user", id, func() (*user_model.User, error) {
return user_model.GetUserByID(ctx, id)
})
}
// handlePullRequestMerging handle pull request merging, a pull request action should push at least 1 commit
func handlePullRequestMerging(ctx *gitea_context.PrivateContext, opts *private.HookOptions, ownerName, repoName string, updates []*repo_module.PushUpdateOptions) {
if len(updates) == 0 {
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Pushing a merged PR (pr:%d) no commits pushed ", opts.PullRequestID),
})
return
}
pr, err := issues_model.GetPullRequestByID(ctx, opts.PullRequestID)
if err != nil {
log.Error("GetPullRequestByID[%d]: %v", opts.PullRequestID, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{Err: "GetPullRequestByID failed"})
return
}
pusher, err := loadContextCacheUser(ctx, opts.UserID)
if err != nil {
log.Error("Failed to Update: %s/%s Error: %v", ownerName, repoName, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{Err: "Load pusher user failed"})
return
}
pr.MergedCommitID = updates[len(updates)-1].NewCommitID
pr.MergedUnix = timeutil.TimeStampNow()
pr.Merger = pusher
pr.MergerID = pusher.ID
err = db.WithTx(ctx, func(ctx context.Context) error {
// Removing an auto merge pull and ignore if not exist
if err := pull_model.DeleteScheduledAutoMerge(ctx, pr.ID); err != nil && !db.IsErrNotExist(err) {
return fmt.Errorf("DeleteScheduledAutoMerge[%d]: %v", opts.PullRequestID, err)
}
if _, err := pr.SetMerged(ctx); err != nil {
return fmt.Errorf("SetMerged failed: %s/%s Error: %v", ownerName, repoName, err)
}
return nil
})
if err != nil {
log.Error("Failed to update PR to merged: %v", err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{Err: "Failed to update PR to merged"})
}
}