A fork of Gitea (see branch `mj`) adding Majority Judgment Polls 𐄷 over Issues and Merge Requests. https://git.mieuxvoter.fr
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// Copyright 2019 The Gitea Authors.
// All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package pull
import (
"context"
"fmt"
"io/ioutil"
"os"
"strconv"
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/notification"
"code.gitea.io/gitea/modules/queue"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
"github.com/unknwon/com"
)
// prQueue represents a queue to handle update pull request tests
var prQueue queue.UniqueQueue
// AddToTaskQueue adds itself to pull request test task queue.
func AddToTaskQueue(pr *models.PullRequest) {
go func() {
err := prQueue.PushFunc(strconv.FormatInt(pr.ID, 10), func() error {
pr.Status = models.PullRequestStatusChecking
err := pr.UpdateColsIfNotMerged("status")
if err != nil {
log.Error("AddToTaskQueue.UpdateCols[%d].(add to queue): %v", pr.ID, err)
} else {
log.Trace("Adding PR ID: %d to the test pull requests queue", pr.ID)
}
return err
})
if err != nil && err != queue.ErrAlreadyInQueue {
log.Error("Error adding prID %d to the test pull requests queue: %v", pr.ID, err)
}
}()
}
// checkAndUpdateStatus checks if pull request is possible to leaving checking status,
// and set to be either conflict or mergeable.
func checkAndUpdateStatus(pr *models.PullRequest) {
// Status is not changed to conflict means mergeable.
if pr.Status == models.PullRequestStatusChecking {
pr.Status = models.PullRequestStatusMergeable
}
// Make sure there is no waiting test to process before leaving the checking status.
has, err := prQueue.Has(strconv.FormatInt(pr.ID, 10))
if err != nil {
log.Error("Unable to check if the queue is waiting to reprocess pr.ID %d. Error: %v", pr.ID, err)
}
if !has {
if err := pr.UpdateColsIfNotMerged("merge_base", "status", "conflicted_files", "changed_protected_files"); err != nil {
log.Error("Update[%d]: %v", pr.ID, err)
}
}
}
// getMergeCommit checks if a pull request got merged
// Returns the git.Commit of the pull request if merged
func getMergeCommit(pr *models.PullRequest) (*git.Commit, error) {
if pr.BaseRepo == nil {
var err error
pr.BaseRepo, err = models.GetRepositoryByID(pr.BaseRepoID)
if err != nil {
return nil, fmt.Errorf("GetRepositoryByID: %v", err)
}
}
indexTmpPath, err := ioutil.TempDir(os.TempDir(), "gitea-"+pr.BaseRepo.Name)
if err != nil {
return nil, fmt.Errorf("Failed to create temp dir for repository %s: %v", pr.BaseRepo.RepoPath(), err)
}
defer func() {
if err := util.RemoveAll(indexTmpPath); err != nil {
log.Warn("Unable to remove temporary index path: %s: Error: %v", indexTmpPath, err)
}
}()
headFile := pr.GetGitRefName()
// Check if a pull request is merged into BaseBranch
_, err = git.NewCommand("merge-base", "--is-ancestor", headFile, pr.BaseBranch).
RunInDirWithEnv(pr.BaseRepo.RepoPath(), []string{"GIT_INDEX_FILE=" + indexTmpPath, "GIT_DIR=" + pr.BaseRepo.RepoPath()})
if err != nil {
// Errors are signaled by a non-zero status that is not 1
if strings.Contains(err.Error(), "exit status 1") {
return nil, nil
}
return nil, fmt.Errorf("git merge-base --is-ancestor: %v", err)
}
commitIDBytes, err := ioutil.ReadFile(pr.BaseRepo.RepoPath() + "/" + headFile)
if err != nil {
return nil, fmt.Errorf("ReadFile(%s): %v", headFile, err)
}
commitID := string(commitIDBytes)
if len(commitID) < 40 {
return nil, fmt.Errorf(`ReadFile(%s): invalid commit-ID "%s"`, headFile, commitID)
}
cmd := commitID[:40] + ".." + pr.BaseBranch
// Get the commit from BaseBranch where the pull request got merged
mergeCommit, err := git.NewCommand("rev-list", "--ancestry-path", "--merges", "--reverse", cmd).
RunInDirWithEnv("", []string{"GIT_INDEX_FILE=" + indexTmpPath, "GIT_DIR=" + pr.BaseRepo.RepoPath()})
if err != nil {
return nil, fmt.Errorf("git rev-list --ancestry-path --merges --reverse: %v", err)
} else if len(mergeCommit) < 40 {
// PR was fast-forwarded, so just use last commit of PR
mergeCommit = commitID[:40]
}
gitRepo, err := git.OpenRepository(pr.BaseRepo.RepoPath())
if err != nil {
return nil, fmt.Errorf("OpenRepository: %v", err)
}
defer gitRepo.Close()
commit, err := gitRepo.GetCommit(mergeCommit[:40])
if err != nil {
return nil, fmt.Errorf("GetCommit: %v", err)
}
return commit, nil
}
// manuallyMerged checks if a pull request got manually merged
// When a pull request got manually merged mark the pull request as merged
func manuallyMerged(pr *models.PullRequest) bool {
commit, err := getMergeCommit(pr)
if err != nil {
log.Error("PullRequest[%d].getMergeCommit: %v", pr.ID, err)
return false
}
if commit != nil {
pr.MergedCommitID = commit.ID.String()
pr.MergedUnix = timeutil.TimeStamp(commit.Author.When.Unix())
pr.Status = models.PullRequestStatusManuallyMerged
merger, _ := models.GetUserByEmail(commit.Author.Email)
// When the commit author is unknown set the BaseRepo owner as merger
if merger == nil {
if pr.BaseRepo.Owner == nil {
if err = pr.BaseRepo.GetOwner(); err != nil {
log.Error("BaseRepo.GetOwner[%d]: %v", pr.ID, err)
return false
}
}
merger = pr.BaseRepo.Owner
}
pr.Merger = merger
pr.MergerID = merger.ID
if merged, err := pr.SetMerged(); err != nil {
log.Error("PullRequest[%d].setMerged : %v", pr.ID, err)
return false
} else if !merged {
return false
}
notification.NotifyMergePullRequest(pr, merger)
log.Info("manuallyMerged[%d]: Marked as manually merged into %s/%s by commit id: %s", pr.ID, pr.BaseRepo.Name, pr.BaseBranch, commit.ID.String())
return true
}
return false
}
// InitializePullRequests checks and tests untested patches of pull requests.
func InitializePullRequests(ctx context.Context) {
prs, err := models.GetPullRequestIDsByCheckStatus(models.PullRequestStatusChecking)
if err != nil {
log.Error("Find Checking PRs: %v", err)
return
}
for _, prID := range prs {
select {
case <-ctx.Done():
return
default:
if err := prQueue.PushFunc(strconv.FormatInt(prID, 10), func() error {
log.Trace("Adding PR ID: %d to the pull requests patch checking queue", prID)
return nil
}); err != nil {
log.Error("Error adding prID: %s to the pull requests patch checking queue %v", prID, err)
}
}
}
}
// handle passed PR IDs and test the PRs
func handle(data ...queue.Data) {
for _, datum := range data {
prID := datum.(string)
id := com.StrTo(prID).MustInt64()
log.Trace("Testing PR ID %d from the pull requests patch checking queue", id)
pr, err := models.GetPullRequestByID(id)
if err != nil {
log.Error("GetPullRequestByID[%s]: %v", prID, err)
continue
} else if pr.HasMerged {
continue
} else if manuallyMerged(pr) {
continue
} else if err = TestPatch(pr); err != nil {
log.Error("testPatch[%d]: %v", pr.ID, err)
pr.Status = models.PullRequestStatusError
if err := pr.UpdateCols("status"); err != nil {
log.Error("update pr [%d] status to PullRequestStatusError failed: %v", pr.ID, err)
}
continue
}
checkAndUpdateStatus(pr)
}
}
// CheckPrsForBaseBranch check all pulls with bseBrannch
func CheckPrsForBaseBranch(baseRepo *models.Repository, baseBranchName string) error {
prs, err := models.GetUnmergedPullRequestsByBaseInfo(baseRepo.ID, baseBranchName)
if err != nil {
return err
}
for _, pr := range prs {
AddToTaskQueue(pr)
}
return nil
}
// Init runs the task queue to test all the checking status pull requests
func Init() error {
prQueue = queue.CreateUniqueQueue("pr_patch_checker", handle, "").(queue.UniqueQueue)
if prQueue == nil {
return fmt.Errorf("Unable to create pr_patch_checker Queue")
}
go graceful.GetManager().RunWithShutdownFns(prQueue.Run)
go graceful.GetManager().RunWithShutdownContext(InitializePullRequests)
return nil
}