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forgejo/services/shared/automerge/automerge.go

120 lines
3.3 KiB
Go

// Copyright 2021 Gitea. All rights reserved.
// SPDX-License-Identifier: MIT
package automerge
import (
"context"
"fmt"
"strconv"
"strings"
issues_model "code.gitea.io/gitea/models/issues"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/queue"
)
// PRAutoMergeQueue represents a queue to handle update pull request tests
var PRAutoMergeQueue *queue.WorkerPoolQueue[string]
func addToQueue(pr *issues_model.PullRequest, sha string) {
log.Trace("Adding pullID: %d to the pull requests patch checking queue with sha %s", pr.ID, sha)
if err := PRAutoMergeQueue.Push(fmt.Sprintf("%d_%s", pr.ID, sha)); err != nil {
log.Error("Error adding pullID: %d to the pull requests patch checking queue %v", pr.ID, err)
}
}
// StartPRCheckAndAutoMergeBySHA start an automerge check and auto merge task for all pull requests of repository and SHA
func StartPRCheckAndAutoMergeBySHA(ctx context.Context, sha string, repo *repo_model.Repository) error {
pulls, err := getPullRequestsByHeadSHA(ctx, sha, repo, func(pr *issues_model.PullRequest) bool {
return !pr.HasMerged && pr.CanAutoMerge()
})
if err != nil {
return err
}
for _, pr := range pulls {
addToQueue(pr, sha)
}
return nil
}
// StartPRCheckAndAutoMerge start an automerge check and auto merge task for a pull request
func StartPRCheckAndAutoMerge(ctx context.Context, pull *issues_model.PullRequest) {
if pull == nil || pull.HasMerged || !pull.CanAutoMerge() {
return
}
if err := pull.LoadBaseRepo(ctx); err != nil {
log.Error("LoadBaseRepo: %v", err)
return
}
gitRepo, err := gitrepo.OpenRepository(ctx, pull.BaseRepo)
if err != nil {
log.Error("OpenRepository: %v", err)
return
}
defer gitRepo.Close()
commitID, err := gitRepo.GetRefCommitID(pull.GetGitRefName())
if err != nil {
log.Error("GetRefCommitID: %v", err)
return
}
addToQueue(pull, commitID)
}
func getPullRequestsByHeadSHA(ctx context.Context, sha string, repo *repo_model.Repository, filter func(*issues_model.PullRequest) bool) (map[int64]*issues_model.PullRequest, error) {
gitRepo, err := gitrepo.OpenRepository(ctx, repo)
if err != nil {
return nil, err
}
defer gitRepo.Close()
refs, err := gitRepo.GetRefsBySha(sha, "")
if err != nil {
return nil, err
}
pulls := make(map[int64]*issues_model.PullRequest)
for _, ref := range refs {
// Each pull branch starts with refs/pull/ we then go from there to find the index of the pr and then
// use that to get the pr.
if strings.HasPrefix(ref, git.PullPrefix) {
parts := strings.Split(ref[len(git.PullPrefix):], "/")
// e.g. 'refs/pull/1/head' would be []string{"1", "head"}
if len(parts) != 2 {
log.Error("getPullRequestsByHeadSHA found broken pull ref [%s] on repo [%-v]", ref, repo)
continue
}
prIndex, err := strconv.ParseInt(parts[0], 10, 64)
if err != nil {
log.Error("getPullRequestsByHeadSHA found broken pull ref [%s] on repo [%-v]", ref, repo)
continue
}
p, err := issues_model.GetPullRequestByIndex(ctx, repo.ID, prIndex)
if err != nil {
// If there is no pull request for this branch, we don't try to merge it.
if issues_model.IsErrPullRequestNotExist(err) {
continue
}
return nil, err
}
if filter(p) {
pulls[p.ID] = p
}
}
}
return pulls, nil
}