876 lines
31 KiB
Go
876 lines
31 KiB
Go
// Copyright 2019 The Gitea Authors.
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// All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package pull
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import (
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"bufio"
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"bytes"
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"context"
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/models/db"
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git_model "code.gitea.io/gitea/models/git"
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issues_model "code.gitea.io/gitea/models/issues"
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access_model "code.gitea.io/gitea/models/perm/access"
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pull_model "code.gitea.io/gitea/models/pull"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/models/unit"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/cache"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/notification"
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"code.gitea.io/gitea/modules/references"
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repo_module "code.gitea.io/gitea/modules/repository"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/timeutil"
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asymkey_service "code.gitea.io/gitea/services/asymkey"
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issue_service "code.gitea.io/gitea/services/issue"
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)
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// GetDefaultMergeMessage returns default message used when merging pull request
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func GetDefaultMergeMessage(baseGitRepo *git.Repository, pr *issues_model.PullRequest, mergeStyle repo_model.MergeStyle) (string, error) {
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if err := pr.LoadHeadRepo(); err != nil {
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return "", err
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}
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if err := pr.LoadBaseRepo(); err != nil {
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return "", err
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}
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if pr.BaseRepo == nil {
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return "", repo_model.ErrRepoNotExist{ID: pr.BaseRepoID}
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}
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if err := pr.LoadIssue(); err != nil {
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return "", err
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}
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isExternalTracker := pr.BaseRepo.UnitEnabled(unit.TypeExternalTracker)
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issueReference := "#"
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if isExternalTracker {
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issueReference = "!"
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}
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if mergeStyle != "" {
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templateFilepath := fmt.Sprintf(".gitea/default_merge_message/%s_TEMPLATE.md", strings.ToUpper(string(mergeStyle)))
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commit, err := baseGitRepo.GetBranchCommit(pr.BaseRepo.DefaultBranch)
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if err != nil {
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return "", err
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}
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templateContent, err := commit.GetFileContent(templateFilepath, setting.Repository.PullRequest.DefaultMergeMessageSize)
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if err != nil {
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if !git.IsErrNotExist(err) {
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return "", err
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}
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} else {
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vars := map[string]string{
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"BaseRepoOwnerName": pr.BaseRepo.OwnerName,
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"BaseRepoName": pr.BaseRepo.Name,
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"BaseBranch": pr.BaseBranch,
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"HeadRepoOwnerName": "",
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"HeadRepoName": "",
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"HeadBranch": pr.HeadBranch,
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"PullRequestTitle": pr.Issue.Title,
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"PullRequestDescription": pr.Issue.Content,
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"PullRequestPosterName": pr.Issue.Poster.Name,
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"PullRequestIndex": strconv.FormatInt(pr.Index, 10),
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"PullRequestReference": fmt.Sprintf("%s%d", issueReference, pr.Index),
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}
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if pr.HeadRepo != nil {
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vars["HeadRepoOwnerName"] = pr.HeadRepo.OwnerName
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vars["HeadRepoName"] = pr.HeadRepo.Name
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}
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refs, err := pr.ResolveCrossReferences(baseGitRepo.Ctx)
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if err == nil {
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closeIssueIndexes := make([]string, 0, len(refs))
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closeWord := "close"
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if len(setting.Repository.PullRequest.CloseKeywords) > 0 {
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closeWord = setting.Repository.PullRequest.CloseKeywords[0]
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}
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for _, ref := range refs {
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if ref.RefAction == references.XRefActionCloses {
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closeIssueIndexes = append(closeIssueIndexes, fmt.Sprintf("%s %s%d", closeWord, issueReference, ref.Issue.Index))
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}
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}
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if len(closeIssueIndexes) > 0 {
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vars["ClosingIssues"] = strings.Join(closeIssueIndexes, ", ")
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} else {
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vars["ClosingIssues"] = ""
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}
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}
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return os.Expand(templateContent, func(s string) string {
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return vars[s]
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}), nil
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}
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}
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// Squash merge has a different from other styles.
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if mergeStyle == repo_model.MergeStyleSquash {
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return fmt.Sprintf("%s (%s%d)", pr.Issue.Title, issueReference, pr.Issue.Index), nil
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}
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if pr.BaseRepoID == pr.HeadRepoID {
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return fmt.Sprintf("Merge pull request '%s' (%s%d) from %s into %s", pr.Issue.Title, issueReference, pr.Issue.Index, pr.HeadBranch, pr.BaseBranch), nil
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}
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if pr.HeadRepo == nil {
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return fmt.Sprintf("Merge pull request '%s' (%s%d) from <deleted>:%s into %s", pr.Issue.Title, issueReference, pr.Issue.Index, pr.HeadBranch, pr.BaseBranch), nil
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}
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return fmt.Sprintf("Merge pull request '%s' (%s%d) from %s:%s into %s", pr.Issue.Title, issueReference, pr.Issue.Index, pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseBranch), nil
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}
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// Merge merges pull request to base repository.
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// Caller should check PR is ready to be merged (review and status checks)
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func Merge(ctx context.Context, pr *issues_model.PullRequest, doer *user_model.User, baseGitRepo *git.Repository, mergeStyle repo_model.MergeStyle, expectedHeadCommitID, message string) error {
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if err := pr.LoadHeadRepo(); err != nil {
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log.Error("LoadHeadRepo: %v", err)
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return fmt.Errorf("LoadHeadRepo: %v", err)
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} else if err := pr.LoadBaseRepo(); err != nil {
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log.Error("LoadBaseRepo: %v", err)
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return fmt.Errorf("LoadBaseRepo: %v", err)
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}
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pullWorkingPool.CheckIn(fmt.Sprint(pr.ID))
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defer pullWorkingPool.CheckOut(fmt.Sprint(pr.ID))
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// Removing an auto merge pull and ignore if not exist
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if err := pull_model.DeleteScheduledAutoMerge(db.DefaultContext, pr.ID); err != nil && !db.IsErrNotExist(err) {
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return err
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}
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prUnit, err := pr.BaseRepo.GetUnit(unit.TypePullRequests)
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if err != nil {
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log.Error("pr.BaseRepo.GetUnit(unit.TypePullRequests): %v", err)
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return err
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}
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prConfig := prUnit.PullRequestsConfig()
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// Check if merge style is correct and allowed
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if !prConfig.IsMergeStyleAllowed(mergeStyle) {
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return models.ErrInvalidMergeStyle{ID: pr.BaseRepo.ID, Style: mergeStyle}
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}
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defer func() {
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go AddTestPullRequestTask(doer, pr.BaseRepo.ID, pr.BaseBranch, false, "", "")
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}()
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// TODO: make it able to do this in a database session
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mergeCtx := context.Background()
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pr.MergedCommitID, err = rawMerge(mergeCtx, pr, doer, mergeStyle, expectedHeadCommitID, message)
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if err != nil {
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return err
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}
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pr.MergedUnix = timeutil.TimeStampNow()
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pr.Merger = doer
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pr.MergerID = doer.ID
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if _, err := pr.SetMerged(ctx); err != nil {
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log.Error("setMerged [%d]: %v", pr.ID, err)
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}
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if err := pr.LoadIssueCtx(ctx); err != nil {
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log.Error("loadIssue [%d]: %v", pr.ID, err)
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}
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if err := pr.Issue.LoadRepo(ctx); err != nil {
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log.Error("loadRepo for issue [%d]: %v", pr.ID, err)
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}
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if err := pr.Issue.Repo.GetOwner(ctx); err != nil {
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log.Error("GetOwner for issue repo [%d]: %v", pr.ID, err)
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}
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notification.NotifyMergePullRequest(pr, doer)
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// Reset cached commit count
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cache.Remove(pr.Issue.Repo.GetCommitsCountCacheKey(pr.BaseBranch, true))
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// Resolve cross references
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refs, err := pr.ResolveCrossReferences(ctx)
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if err != nil {
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log.Error("ResolveCrossReferences: %v", err)
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return nil
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}
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for _, ref := range refs {
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if err = ref.LoadIssueCtx(ctx); err != nil {
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return err
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}
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if err = ref.Issue.LoadRepo(ctx); err != nil {
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return err
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}
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close := ref.RefAction == references.XRefActionCloses
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if close != ref.Issue.IsClosed {
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if err = issue_service.ChangeStatus(ref.Issue, doer, close); err != nil {
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// Allow ErrDependenciesLeft
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if !issues_model.IsErrDependenciesLeft(err) {
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return err
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}
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}
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}
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}
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return nil
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}
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// rawMerge perform the merge operation without changing any pull information in database
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func rawMerge(ctx context.Context, pr *issues_model.PullRequest, doer *user_model.User, mergeStyle repo_model.MergeStyle, expectedHeadCommitID, message string) (string, error) {
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// Clone base repo.
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tmpBasePath, err := createTemporaryRepo(ctx, pr)
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if err != nil {
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log.Error("CreateTemporaryPath: %v", err)
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return "", err
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}
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defer func() {
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if err := repo_module.RemoveTemporaryPath(tmpBasePath); err != nil {
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log.Error("Merge: RemoveTemporaryPath: %s", err)
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}
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}()
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baseBranch := "base"
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trackingBranch := "tracking"
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stagingBranch := "staging"
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if expectedHeadCommitID != "" {
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trackingCommitID, _, err := git.NewCommand(ctx, "show-ref", "--hash", git.BranchPrefix+trackingBranch).RunStdString(&git.RunOpts{Dir: tmpBasePath})
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if err != nil {
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log.Error("show-ref[%s] --hash refs/heads/trackingn: %v", tmpBasePath, git.BranchPrefix+trackingBranch, err)
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return "", fmt.Errorf("getDiffTree: %v", err)
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}
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if strings.TrimSpace(trackingCommitID) != expectedHeadCommitID {
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return "", models.ErrSHADoesNotMatch{
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GivenSHA: expectedHeadCommitID,
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CurrentSHA: trackingCommitID,
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}
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}
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}
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var outbuf, errbuf strings.Builder
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// Enable sparse-checkout
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sparseCheckoutList, err := getDiffTree(ctx, tmpBasePath, baseBranch, trackingBranch)
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if err != nil {
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log.Error("getDiffTree(%s, %s, %s): %v", tmpBasePath, baseBranch, trackingBranch, err)
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return "", fmt.Errorf("getDiffTree: %v", err)
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}
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infoPath := filepath.Join(tmpBasePath, ".git", "info")
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if err := os.MkdirAll(infoPath, 0o700); err != nil {
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log.Error("Unable to create .git/info in %s: %v", tmpBasePath, err)
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return "", fmt.Errorf("Unable to create .git/info in tmpBasePath: %v", err)
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}
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sparseCheckoutListPath := filepath.Join(infoPath, "sparse-checkout")
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if err := os.WriteFile(sparseCheckoutListPath, []byte(sparseCheckoutList), 0o600); err != nil {
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log.Error("Unable to write .git/info/sparse-checkout file in %s: %v", tmpBasePath, err)
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return "", fmt.Errorf("Unable to write .git/info/sparse-checkout file in tmpBasePath: %v", err)
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}
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gitConfigCommand := func() *git.Command {
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return git.NewCommand(ctx, "config", "--local")
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}
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// Switch off LFS process (set required, clean and smudge here also)
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if err := gitConfigCommand().AddArguments("filter.lfs.process", "").
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git config [filter.lfs.process -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("git config [filter.lfs.process -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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if err := gitConfigCommand().AddArguments("filter.lfs.required", "false").
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git config [filter.lfs.required -> <false> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("git config [filter.lfs.required -> <false> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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if err := gitConfigCommand().AddArguments("filter.lfs.clean", "").
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git config [filter.lfs.clean -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("git config [filter.lfs.clean -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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if err := gitConfigCommand().AddArguments("filter.lfs.smudge", "").
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git config [filter.lfs.smudge -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("git config [filter.lfs.smudge -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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if err := gitConfigCommand().AddArguments("core.sparseCheckout", "true").
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git config [core.sparseCheckout -> true ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("git config [core.sparsecheckout -> true]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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// Read base branch index
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if err := git.NewCommand(ctx, "read-tree", "HEAD").
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git read-tree HEAD: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("Unable to read base branch in to the index: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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sig := doer.NewGitSig()
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committer := sig
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// Determine if we should sign
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signArg := ""
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sign, keyID, signer, _ := asymkey_service.SignMerge(ctx, pr, doer, tmpBasePath, "HEAD", trackingBranch)
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if sign {
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signArg = "-S" + keyID
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if pr.BaseRepo.GetTrustModel() == repo_model.CommitterTrustModel || pr.BaseRepo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
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committer = signer
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}
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} else {
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signArg = "--no-gpg-sign"
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}
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commitTimeStr := time.Now().Format(time.RFC3339)
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// Because this may call hooks we should pass in the environment
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env := append(os.Environ(),
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"GIT_AUTHOR_NAME="+sig.Name,
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"GIT_AUTHOR_EMAIL="+sig.Email,
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"GIT_AUTHOR_DATE="+commitTimeStr,
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"GIT_COMMITTER_NAME="+committer.Name,
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"GIT_COMMITTER_EMAIL="+committer.Email,
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"GIT_COMMITTER_DATE="+commitTimeStr,
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)
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// Merge commits.
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switch mergeStyle {
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case repo_model.MergeStyleMerge:
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cmd := git.NewCommand(ctx, "merge", "--no-ff", "--no-commit", trackingBranch)
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if err := runMergeCommand(pr, mergeStyle, cmd, tmpBasePath); err != nil {
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log.Error("Unable to merge tracking into base: %v", err)
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return "", err
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}
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if err := commitAndSignNoAuthor(ctx, pr, message, signArg, tmpBasePath, env); err != nil {
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log.Error("Unable to make final commit: %v", err)
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return "", err
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}
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case repo_model.MergeStyleRebase:
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fallthrough
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case repo_model.MergeStyleRebaseUpdate:
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fallthrough
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case repo_model.MergeStyleRebaseMerge:
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// Checkout head branch
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if err := git.NewCommand(ctx, "checkout", "-b", stagingBranch, trackingBranch).
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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log.Error("git checkout base prior to merge post staging rebase [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
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return "", fmt.Errorf("git checkout base prior to merge post staging rebase [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
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}
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outbuf.Reset()
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errbuf.Reset()
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// Rebase before merging
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if err := git.NewCommand(ctx, "rebase", baseBranch).
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Run(&git.RunOpts{
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Dir: tmpBasePath,
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Stdout: &outbuf,
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Stderr: &errbuf,
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}); err != nil {
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// Rebase will leave a REBASE_HEAD file in .git if there is a conflict
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if _, statErr := os.Stat(filepath.Join(tmpBasePath, ".git", "REBASE_HEAD")); statErr == nil {
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var commitSha string
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ok := false
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failingCommitPaths := []string{
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filepath.Join(tmpBasePath, ".git", "rebase-apply", "original-commit"), // Git < 2.26
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filepath.Join(tmpBasePath, ".git", "rebase-merge", "stopped-sha"), // Git >= 2.26
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}
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for _, failingCommitPath := range failingCommitPaths {
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if _, statErr := os.Stat(failingCommitPath); statErr == nil {
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commitShaBytes, readErr := os.ReadFile(failingCommitPath)
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if readErr != nil {
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// Abandon this attempt to handle the error
|
|
log.Error("git rebase staging on to base [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", fmt.Errorf("git rebase staging on to base [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
commitSha = strings.TrimSpace(string(commitShaBytes))
|
|
ok = true
|
|
break
|
|
}
|
|
}
|
|
if !ok {
|
|
log.Error("Unable to determine failing commit sha for this rebase message. Cannot cast as models.ErrRebaseConflicts.")
|
|
log.Error("git rebase staging on to base [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", fmt.Errorf("git rebase staging on to base [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
log.Debug("RebaseConflict at %s [%s:%s -> %s:%s]: %v\n%s\n%s", commitSha, pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", models.ErrRebaseConflicts{
|
|
Style: mergeStyle,
|
|
CommitSHA: commitSha,
|
|
StdOut: outbuf.String(),
|
|
StdErr: errbuf.String(),
|
|
Err: err,
|
|
}
|
|
}
|
|
log.Error("git rebase staging on to base [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", fmt.Errorf("git rebase staging on to base [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
outbuf.Reset()
|
|
errbuf.Reset()
|
|
|
|
// not need merge, just update by rebase. so skip
|
|
if mergeStyle == repo_model.MergeStyleRebaseUpdate {
|
|
break
|
|
}
|
|
|
|
// Checkout base branch again
|
|
if err := git.NewCommand(ctx, "checkout", baseBranch).
|
|
Run(&git.RunOpts{
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
log.Error("git checkout base prior to merge post staging rebase [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", fmt.Errorf("git checkout base prior to merge post staging rebase [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
outbuf.Reset()
|
|
errbuf.Reset()
|
|
|
|
cmd := git.NewCommand(ctx, "merge")
|
|
if mergeStyle == repo_model.MergeStyleRebase {
|
|
cmd.AddArguments("--ff-only")
|
|
} else {
|
|
cmd.AddArguments("--no-ff", "--no-commit")
|
|
}
|
|
cmd.AddArguments(stagingBranch)
|
|
|
|
// Prepare merge with commit
|
|
if err := runMergeCommand(pr, mergeStyle, cmd, tmpBasePath); err != nil {
|
|
log.Error("Unable to merge staging into base: %v", err)
|
|
return "", err
|
|
}
|
|
if mergeStyle == repo_model.MergeStyleRebaseMerge {
|
|
if err := commitAndSignNoAuthor(ctx, pr, message, signArg, tmpBasePath, env); err != nil {
|
|
log.Error("Unable to make final commit: %v", err)
|
|
return "", err
|
|
}
|
|
}
|
|
case repo_model.MergeStyleSquash:
|
|
// Merge with squash
|
|
cmd := git.NewCommand(ctx, "merge", "--squash", trackingBranch)
|
|
if err := runMergeCommand(pr, mergeStyle, cmd, tmpBasePath); err != nil {
|
|
log.Error("Unable to merge --squash tracking into base: %v", err)
|
|
return "", err
|
|
}
|
|
|
|
if err = pr.Issue.LoadPoster(); err != nil {
|
|
log.Error("LoadPoster: %v", err)
|
|
return "", fmt.Errorf("LoadPoster: %v", err)
|
|
}
|
|
sig := pr.Issue.Poster.NewGitSig()
|
|
if signArg == "" {
|
|
if err := git.NewCommand(ctx, "commit", fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email), "-m", message).
|
|
Run(&git.RunOpts{
|
|
Env: env,
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
log.Error("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", fmt.Errorf("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
} else {
|
|
if setting.Repository.PullRequest.AddCoCommitterTrailers && committer.String() != sig.String() {
|
|
// add trailer
|
|
message += fmt.Sprintf("\nCo-authored-by: %s\nCo-committed-by: %s\n", sig.String(), sig.String())
|
|
}
|
|
if err := git.NewCommand(ctx, "commit", signArg, fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email), "-m", message).
|
|
Run(&git.RunOpts{
|
|
Env: env,
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
log.Error("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return "", fmt.Errorf("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
}
|
|
outbuf.Reset()
|
|
errbuf.Reset()
|
|
default:
|
|
return "", models.ErrInvalidMergeStyle{ID: pr.BaseRepo.ID, Style: mergeStyle}
|
|
}
|
|
|
|
// OK we should cache our current head and origin/headbranch
|
|
mergeHeadSHA, err := git.GetFullCommitID(ctx, tmpBasePath, "HEAD")
|
|
if err != nil {
|
|
return "", fmt.Errorf("Failed to get full commit id for HEAD: %v", err)
|
|
}
|
|
mergeBaseSHA, err := git.GetFullCommitID(ctx, tmpBasePath, "original_"+baseBranch)
|
|
if err != nil {
|
|
return "", fmt.Errorf("Failed to get full commit id for origin/%s: %v", pr.BaseBranch, err)
|
|
}
|
|
mergeCommitID, err := git.GetFullCommitID(ctx, tmpBasePath, baseBranch)
|
|
if err != nil {
|
|
return "", fmt.Errorf("Failed to get full commit id for the new merge: %v", err)
|
|
}
|
|
|
|
// Now it's questionable about where this should go - either after or before the push
|
|
// I think in the interests of data safety - failures to push to the lfs should prevent
|
|
// the merge as you can always remerge.
|
|
if setting.LFS.StartServer {
|
|
if err := LFSPush(ctx, tmpBasePath, mergeHeadSHA, mergeBaseSHA, pr); err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
|
|
var headUser *user_model.User
|
|
err = pr.HeadRepo.GetOwner(ctx)
|
|
if err != nil {
|
|
if !user_model.IsErrUserNotExist(err) {
|
|
log.Error("Can't find user: %d for head repository - %v", pr.HeadRepo.OwnerID, err)
|
|
return "", err
|
|
}
|
|
log.Error("Can't find user: %d for head repository - defaulting to doer: %s - %v", pr.HeadRepo.OwnerID, doer.Name, err)
|
|
headUser = doer
|
|
} else {
|
|
headUser = pr.HeadRepo.Owner
|
|
}
|
|
|
|
env = repo_module.FullPushingEnvironment(
|
|
headUser,
|
|
doer,
|
|
pr.BaseRepo,
|
|
pr.BaseRepo.Name,
|
|
pr.ID,
|
|
)
|
|
|
|
var pushCmd *git.Command
|
|
if mergeStyle == repo_model.MergeStyleRebaseUpdate {
|
|
// force push the rebase result to head branch
|
|
pushCmd = git.NewCommand(ctx, "push", "-f", "head_repo", stagingBranch+":"+git.BranchPrefix+pr.HeadBranch)
|
|
} else {
|
|
pushCmd = git.NewCommand(ctx, "push", "origin", baseBranch+":"+git.BranchPrefix+pr.BaseBranch)
|
|
}
|
|
|
|
// Push back to upstream.
|
|
// TODO: this cause an api call to "/api/internal/hook/post-receive/...",
|
|
// that prevents us from doint the whole merge in one db transaction
|
|
if err := pushCmd.Run(&git.RunOpts{
|
|
Env: env,
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
if strings.Contains(errbuf.String(), "non-fast-forward") {
|
|
return "", &git.ErrPushOutOfDate{
|
|
StdOut: outbuf.String(),
|
|
StdErr: errbuf.String(),
|
|
Err: err,
|
|
}
|
|
} else if strings.Contains(errbuf.String(), "! [remote rejected]") {
|
|
err := &git.ErrPushRejected{
|
|
StdOut: outbuf.String(),
|
|
StdErr: errbuf.String(),
|
|
Err: err,
|
|
}
|
|
err.GenerateMessage()
|
|
return "", err
|
|
}
|
|
return "", fmt.Errorf("git push: %s", errbuf.String())
|
|
}
|
|
outbuf.Reset()
|
|
errbuf.Reset()
|
|
|
|
return mergeCommitID, nil
|
|
}
|
|
|
|
func commitAndSignNoAuthor(ctx context.Context, pr *issues_model.PullRequest, message, signArg, tmpBasePath string, env []string) error {
|
|
var outbuf, errbuf strings.Builder
|
|
if signArg == "" {
|
|
if err := git.NewCommand(ctx, "commit", "-m", message).
|
|
Run(&git.RunOpts{
|
|
Env: env,
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
log.Error("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return fmt.Errorf("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
} else {
|
|
if err := git.NewCommand(ctx, "commit", signArg, "-m", message).
|
|
Run(&git.RunOpts{
|
|
Env: env,
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
log.Error("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return fmt.Errorf("git commit [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func runMergeCommand(pr *issues_model.PullRequest, mergeStyle repo_model.MergeStyle, cmd *git.Command, tmpBasePath string) error {
|
|
var outbuf, errbuf strings.Builder
|
|
if err := cmd.Run(&git.RunOpts{
|
|
Dir: tmpBasePath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
// Merge will leave a MERGE_HEAD file in the .git folder if there is a conflict
|
|
if _, statErr := os.Stat(filepath.Join(tmpBasePath, ".git", "MERGE_HEAD")); statErr == nil {
|
|
// We have a merge conflict error
|
|
log.Debug("MergeConflict [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return models.ErrMergeConflicts{
|
|
Style: mergeStyle,
|
|
StdOut: outbuf.String(),
|
|
StdErr: errbuf.String(),
|
|
Err: err,
|
|
}
|
|
} else if strings.Contains(errbuf.String(), "refusing to merge unrelated histories") {
|
|
log.Debug("MergeUnrelatedHistories [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return models.ErrMergeUnrelatedHistories{
|
|
Style: mergeStyle,
|
|
StdOut: outbuf.String(),
|
|
StdErr: errbuf.String(),
|
|
Err: err,
|
|
}
|
|
}
|
|
log.Error("git merge [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
return fmt.Errorf("git merge [%s:%s -> %s:%s]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
var escapedSymbols = regexp.MustCompile(`([*[?! \\])`)
|
|
|
|
func getDiffTree(ctx context.Context, repoPath, baseBranch, headBranch string) (string, error) {
|
|
getDiffTreeFromBranch := func(repoPath, baseBranch, headBranch string) (string, error) {
|
|
var outbuf, errbuf strings.Builder
|
|
// Compute the diff-tree for sparse-checkout
|
|
if err := git.NewCommand(ctx, "diff-tree", "--no-commit-id", "--name-only", "-r", "-z", "--root", baseBranch, headBranch, "--").
|
|
Run(&git.RunOpts{
|
|
Dir: repoPath,
|
|
Stdout: &outbuf,
|
|
Stderr: &errbuf,
|
|
}); err != nil {
|
|
return "", fmt.Errorf("git diff-tree [%s base:%s head:%s]: %s", repoPath, baseBranch, headBranch, errbuf.String())
|
|
}
|
|
return outbuf.String(), nil
|
|
}
|
|
|
|
scanNullTerminatedStrings := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
|
|
if atEOF && len(data) == 0 {
|
|
return 0, nil, nil
|
|
}
|
|
if i := bytes.IndexByte(data, '\x00'); i >= 0 {
|
|
return i + 1, data[0:i], nil
|
|
}
|
|
if atEOF {
|
|
return len(data), data, nil
|
|
}
|
|
return 0, nil, nil
|
|
}
|
|
|
|
list, err := getDiffTreeFromBranch(repoPath, baseBranch, headBranch)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// Prefixing '/' for each entry, otherwise all files with the same name in subdirectories would be matched.
|
|
out := bytes.Buffer{}
|
|
scanner := bufio.NewScanner(strings.NewReader(list))
|
|
scanner.Split(scanNullTerminatedStrings)
|
|
for scanner.Scan() {
|
|
filepath := scanner.Text()
|
|
// escape '*', '?', '[', spaces and '!' prefix
|
|
filepath = escapedSymbols.ReplaceAllString(filepath, `\$1`)
|
|
// no necessary to escape the first '#' symbol because the first symbol is '/'
|
|
fmt.Fprintf(&out, "/%s\n", filepath)
|
|
}
|
|
|
|
return out.String(), nil
|
|
}
|
|
|
|
// IsUserAllowedToMerge check if user is allowed to merge PR with given permissions and branch protections
|
|
func IsUserAllowedToMerge(ctx context.Context, pr *issues_model.PullRequest, p access_model.Permission, user *user_model.User) (bool, error) {
|
|
if user == nil {
|
|
return false, nil
|
|
}
|
|
|
|
err := pr.LoadProtectedBranchCtx(ctx)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
if (p.CanWrite(unit.TypeCode) && pr.ProtectedBranch == nil) || (pr.ProtectedBranch != nil && git_model.IsUserMergeWhitelisted(ctx, pr.ProtectedBranch, user.ID, p)) {
|
|
return true, nil
|
|
}
|
|
|
|
return false, nil
|
|
}
|
|
|
|
// CheckPullBranchProtections checks whether the PR is ready to be merged (reviews and status checks)
|
|
func CheckPullBranchProtections(ctx context.Context, pr *issues_model.PullRequest, skipProtectedFilesCheck bool) (err error) {
|
|
if err = pr.LoadBaseRepoCtx(ctx); err != nil {
|
|
return fmt.Errorf("LoadBaseRepo: %v", err)
|
|
}
|
|
|
|
if err = pr.LoadProtectedBranchCtx(ctx); err != nil {
|
|
return fmt.Errorf("LoadProtectedBranch: %v", err)
|
|
}
|
|
if pr.ProtectedBranch == nil {
|
|
return nil
|
|
}
|
|
|
|
isPass, err := IsPullCommitStatusPass(ctx, pr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !isPass {
|
|
return models.ErrDisallowedToMerge{
|
|
Reason: "Not all required status checks successful",
|
|
}
|
|
}
|
|
|
|
if !issues_model.HasEnoughApprovals(ctx, pr.ProtectedBranch, pr) {
|
|
return models.ErrDisallowedToMerge{
|
|
Reason: "Does not have enough approvals",
|
|
}
|
|
}
|
|
if issues_model.MergeBlockedByRejectedReview(ctx, pr.ProtectedBranch, pr) {
|
|
return models.ErrDisallowedToMerge{
|
|
Reason: "There are requested changes",
|
|
}
|
|
}
|
|
if issues_model.MergeBlockedByOfficialReviewRequests(ctx, pr.ProtectedBranch, pr) {
|
|
return models.ErrDisallowedToMerge{
|
|
Reason: "There are official review requests",
|
|
}
|
|
}
|
|
|
|
if issues_model.MergeBlockedByOutdatedBranch(pr.ProtectedBranch, pr) {
|
|
return models.ErrDisallowedToMerge{
|
|
Reason: "The head branch is behind the base branch",
|
|
}
|
|
}
|
|
|
|
if skipProtectedFilesCheck {
|
|
return nil
|
|
}
|
|
|
|
if pr.ProtectedBranch.MergeBlockedByProtectedFiles(pr.ChangedProtectedFiles) {
|
|
return models.ErrDisallowedToMerge{
|
|
Reason: "Changed protected files",
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// MergedManually mark pr as merged manually
|
|
func MergedManually(pr *issues_model.PullRequest, doer *user_model.User, baseGitRepo *git.Repository, commitID string) error {
|
|
pullWorkingPool.CheckIn(fmt.Sprint(pr.ID))
|
|
defer pullWorkingPool.CheckOut(fmt.Sprint(pr.ID))
|
|
|
|
if err := db.WithTx(func(ctx context.Context) error {
|
|
prUnit, err := pr.BaseRepo.GetUnitCtx(ctx, unit.TypePullRequests)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
prConfig := prUnit.PullRequestsConfig()
|
|
|
|
// Check if merge style is correct and allowed
|
|
if !prConfig.IsMergeStyleAllowed(repo_model.MergeStyleManuallyMerged) {
|
|
return models.ErrInvalidMergeStyle{ID: pr.BaseRepo.ID, Style: repo_model.MergeStyleManuallyMerged}
|
|
}
|
|
|
|
if len(commitID) < 40 {
|
|
return fmt.Errorf("Wrong commit ID")
|
|
}
|
|
|
|
commit, err := baseGitRepo.GetCommit(commitID)
|
|
if err != nil {
|
|
if git.IsErrNotExist(err) {
|
|
return fmt.Errorf("Wrong commit ID")
|
|
}
|
|
return err
|
|
}
|
|
commitID = commit.ID.String()
|
|
|
|
ok, err := baseGitRepo.IsCommitInBranch(commitID, pr.BaseBranch)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !ok {
|
|
return fmt.Errorf("Wrong commit ID")
|
|
}
|
|
|
|
pr.MergedCommitID = commitID
|
|
pr.MergedUnix = timeutil.TimeStamp(commit.Author.When.Unix())
|
|
pr.Status = issues_model.PullRequestStatusManuallyMerged
|
|
pr.Merger = doer
|
|
pr.MergerID = doer.ID
|
|
|
|
merged := false
|
|
if merged, err = pr.SetMerged(ctx); err != nil {
|
|
return err
|
|
} else if !merged {
|
|
return fmt.Errorf("SetMerged failed")
|
|
}
|
|
return nil
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
|
|
notification.NotifyMergePullRequest(pr, doer)
|
|
log.Info("manuallyMerged[%d]: Marked as manually merged into %s/%s by commit id: %s", pr.ID, pr.BaseRepo.Name, pr.BaseBranch, commitID)
|
|
return nil
|
|
}
|