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forgejo/services/pull/merge.go
a1012112796 a5279b74b6
Make manual merge autodetection optional and add manual merge as merge method (#12543)
* Make auto check manual merge as a chooseable mod and add manual merge way on ui

as title, Before this pr, we use same way with GH to check manually merge.
It good, but in some special cases, misjudgments can occur. and it's hard
to fix this bug. So I add option to allow repo manager block "auto check manual merge"
function, Then it will have same style like gitlab(allow empty pr). and to compensate for
not being able to detect THE PR merge automatically, I added a manual approach.

Signed-off-by: a1012112796 <1012112796@qq.com>

* make swager

* api support

* ping ci

* fix TestPullCreate_EmptyChangesWithCommits

* Apply suggestions from code review

Co-authored-by: zeripath <art27@cantab.net>

* Apply review suggestions and add test

* Apply suggestions from code review

Co-authored-by: zeripath <art27@cantab.net>

* fix build

* test error message

* make fmt

* Fix indentation issues identified by @silverwind

Co-authored-by: silverwind <me@silverwind.io>

* Fix tests and make manually merged disabled error on API the same

Signed-off-by: Andrew Thornton <art27@cantab.net>

* a small nit

* fix wrong commit id error

* fix bug

* simple test

* fix test

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2021-03-03 22:41:23 -05:00

668 lines
25 KiB
Go

// 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 (
"bufio"
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"strings"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/notification"
"code.gitea.io/gitea/modules/references"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
issue_service "code.gitea.io/gitea/services/issue"
)
// Merge merges pull request to base repository.
// Caller should check PR is ready to be merged (review and status checks)
// FIXME: add repoWorkingPull make sure two merges does not happen at same time.
func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repository, mergeStyle models.MergeStyle, message string) (err error) {
if err = pr.LoadHeadRepo(); err != nil {
log.Error("LoadHeadRepo: %v", err)
return fmt.Errorf("LoadHeadRepo: %v", err)
} else if err = pr.LoadBaseRepo(); err != nil {
log.Error("LoadBaseRepo: %v", err)
return fmt.Errorf("LoadBaseRepo: %v", err)
}
prUnit, err := pr.BaseRepo.GetUnit(models.UnitTypePullRequests)
if err != nil {
log.Error("pr.BaseRepo.GetUnit(models.UnitTypePullRequests): %v", err)
return err
}
prConfig := prUnit.PullRequestsConfig()
// Check if merge style is correct and allowed
if !prConfig.IsMergeStyleAllowed(mergeStyle) {
return models.ErrInvalidMergeStyle{ID: pr.BaseRepo.ID, Style: mergeStyle}
}
defer func() {
go AddTestPullRequestTask(doer, pr.BaseRepo.ID, pr.BaseBranch, false, "", "")
}()
pr.MergedCommitID, err = rawMerge(pr, doer, mergeStyle, message)
if err != nil {
return err
}
pr.MergedUnix = timeutil.TimeStampNow()
pr.Merger = doer
pr.MergerID = doer.ID
if _, err = pr.SetMerged(); err != nil {
log.Error("setMerged [%d]: %v", pr.ID, err)
}
if err := pr.LoadIssue(); err != nil {
log.Error("loadIssue [%d]: %v", pr.ID, err)
}
if err := pr.Issue.LoadRepo(); err != nil {
log.Error("loadRepo for issue [%d]: %v", pr.ID, err)
}
if err := pr.Issue.Repo.GetOwner(); err != nil {
log.Error("GetOwner for issue repo [%d]: %v", pr.ID, err)
}
notification.NotifyMergePullRequest(pr, doer)
// Reset cached commit count
cache.Remove(pr.Issue.Repo.GetCommitsCountCacheKey(pr.BaseBranch, true))
// Resolve cross references
refs, err := pr.ResolveCrossReferences()
if err != nil {
log.Error("ResolveCrossReferences: %v", err)
return nil
}
for _, ref := range refs {
if err = ref.LoadIssue(); err != nil {
return err
}
if err = ref.Issue.LoadRepo(); err != nil {
return err
}
close := (ref.RefAction == references.XRefActionCloses)
if close != ref.Issue.IsClosed {
if err = issue_service.ChangeStatus(ref.Issue, doer, close); err != nil {
return err
}
}
}
return nil
}
// rawMerge perform the merge operation without changing any pull information in database
func rawMerge(pr *models.PullRequest, doer *models.User, mergeStyle models.MergeStyle, message string) (string, error) {
err := git.LoadGitVersion()
if err != nil {
log.Error("git.LoadGitVersion: %v", err)
return "", fmt.Errorf("Unable to get git version: %v", err)
}
// Clone base repo.
tmpBasePath, err := createTemporaryRepo(pr)
if err != nil {
log.Error("CreateTemporaryPath: %v", err)
return "", err
}
defer func() {
if err := models.RemoveTemporaryPath(tmpBasePath); err != nil {
log.Error("Merge: RemoveTemporaryPath: %s", err)
}
}()
baseBranch := "base"
trackingBranch := "tracking"
stagingBranch := "staging"
var outbuf, errbuf strings.Builder
// Enable sparse-checkout
sparseCheckoutList, err := getDiffTree(tmpBasePath, baseBranch, trackingBranch)
if err != nil {
log.Error("getDiffTree(%s, %s, %s): %v", tmpBasePath, baseBranch, trackingBranch, err)
return "", fmt.Errorf("getDiffTree: %v", err)
}
infoPath := filepath.Join(tmpBasePath, ".git", "info")
if err := os.MkdirAll(infoPath, 0700); err != nil {
log.Error("Unable to create .git/info in %s: %v", tmpBasePath, err)
return "", fmt.Errorf("Unable to create .git/info in tmpBasePath: %v", err)
}
sparseCheckoutListPath := filepath.Join(infoPath, "sparse-checkout")
if err := ioutil.WriteFile(sparseCheckoutListPath, []byte(sparseCheckoutList), 0600); err != nil {
log.Error("Unable to write .git/info/sparse-checkout file in %s: %v", tmpBasePath, err)
return "", fmt.Errorf("Unable to write .git/info/sparse-checkout file in tmpBasePath: %v", err)
}
var gitConfigCommand func() *git.Command
if git.CheckGitVersionAtLeast("1.8.0") == nil {
gitConfigCommand = func() *git.Command {
return git.NewCommand("config", "--local")
}
} else {
gitConfigCommand = func() *git.Command {
return git.NewCommand("config")
}
}
// Switch off LFS process (set required, clean and smudge here also)
if err := gitConfigCommand().AddArguments("filter.lfs.process", "").RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("git config [filter.lfs.process -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
return "", fmt.Errorf("git config [filter.lfs.process -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := gitConfigCommand().AddArguments("filter.lfs.required", "false").RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("git config [filter.lfs.required -> <false> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
return "", fmt.Errorf("git config [filter.lfs.required -> <false> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := gitConfigCommand().AddArguments("filter.lfs.clean", "").RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("git config [filter.lfs.clean -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
return "", fmt.Errorf("git config [filter.lfs.clean -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := gitConfigCommand().AddArguments("filter.lfs.smudge", "").RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("git config [filter.lfs.smudge -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
return "", fmt.Errorf("git config [filter.lfs.smudge -> <> ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := gitConfigCommand().AddArguments("core.sparseCheckout", "true").RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("git config [core.sparseCheckout -> true ]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
return "", fmt.Errorf("git config [core.sparsecheckout -> true]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
// Read base branch index
if err := git.NewCommand("read-tree", "HEAD").RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("git read-tree HEAD: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
return "", fmt.Errorf("Unable to read base branch in to the index: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
sig := doer.NewGitSig()
committer := sig
// Determine if we should sign
signArg := ""
if git.CheckGitVersionAtLeast("1.7.9") == nil {
sign, keyID, signer, _ := pr.SignMerge(doer, tmpBasePath, "HEAD", trackingBranch)
if sign {
signArg = "-S" + keyID
if pr.BaseRepo.GetTrustModel() == models.CommitterTrustModel || pr.BaseRepo.GetTrustModel() == models.CollaboratorCommitterTrustModel {
committer = signer
}
} else if git.CheckGitVersionAtLeast("2.0.0") == nil {
signArg = "--no-gpg-sign"
}
}
commitTimeStr := time.Now().Format(time.RFC3339)
// Because this may call hooks we should pass in the environment
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+sig.Name,
"GIT_AUTHOR_EMAIL="+sig.Email,
"GIT_AUTHOR_DATE="+commitTimeStr,
"GIT_COMMITTER_NAME="+committer.Name,
"GIT_COMMITTER_EMAIL="+committer.Email,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
// Merge commits.
switch mergeStyle {
case models.MergeStyleMerge:
cmd := git.NewCommand("merge", "--no-ff", "--no-commit", trackingBranch)
if err := runMergeCommand(pr, mergeStyle, cmd, tmpBasePath); err != nil {
log.Error("Unable to merge tracking into base: %v", err)
return "", err
}
if err := commitAndSignNoAuthor(pr, message, signArg, tmpBasePath, env); err != nil {
log.Error("Unable to make final commit: %v", err)
return "", err
}
case models.MergeStyleRebase:
fallthrough
case models.MergeStyleRebaseMerge:
// Checkout head branch
if err := git.NewCommand("checkout", "-b", stagingBranch, trackingBranch).RunInDirPipeline(tmpBasePath, &outbuf, &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()
// Rebase before merging
if err := git.NewCommand("rebase", baseBranch).RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
// Rebase will leave a REBASE_HEAD file in .git if there is a conflict
if _, statErr := os.Stat(filepath.Join(tmpBasePath, ".git", "REBASE_HEAD")); statErr == nil {
var commitSha string
ok := false
failingCommitPaths := []string{
filepath.Join(tmpBasePath, ".git", "rebase-apply", "original-commit"), // Git < 2.26
filepath.Join(tmpBasePath, ".git", "rebase-merge", "stopped-sha"), // Git >= 2.26
}
for _, failingCommitPath := range failingCommitPaths {
if _, statErr := os.Stat(filepath.Join(failingCommitPath)); statErr == nil {
commitShaBytes, readErr := ioutil.ReadFile(filepath.Join(failingCommitPath))
if readErr != nil {
// 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()
// Checkout base branch again
if err := git.NewCommand("checkout", baseBranch).RunInDirPipeline(tmpBasePath, &outbuf, &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("merge")
if mergeStyle == models.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 == models.MergeStyleRebaseMerge {
if err := commitAndSignNoAuthor(pr, message, signArg, tmpBasePath, env); err != nil {
log.Error("Unable to make final commit: %v", err)
return "", err
}
}
case models.MergeStyleSquash:
// Merge with squash
cmd := git.NewCommand("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("commit", fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email), "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &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 committer != sig {
// add trailer
message += fmt.Sprintf("\nCo-authored-by: %s\nCo-committed-by: %s\n", sig.String(), sig.String())
}
if err := git.NewCommand("commit", signArg, fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email), "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &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(tmpBasePath, "HEAD")
if err != nil {
return "", fmt.Errorf("Failed to get full commit id for HEAD: %v", err)
}
mergeBaseSHA, err := git.GetFullCommitID(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(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(tmpBasePath, mergeHeadSHA, mergeBaseSHA, pr); err != nil {
return "", err
}
}
var headUser *models.User
err = pr.HeadRepo.GetOwner()
if err != nil {
if !models.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 = models.FullPushingEnvironment(
headUser,
doer,
pr.BaseRepo,
pr.BaseRepo.Name,
pr.ID,
)
// Push back to upstream.
if err := git.NewCommand("push", "origin", baseBranch+":refs/heads/"+pr.BaseBranch).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &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(pr *models.PullRequest, message, signArg, tmpBasePath string, env []string) error {
var outbuf, errbuf strings.Builder
if signArg == "" {
if err := git.NewCommand("commit", "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &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("commit", signArg, "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &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 *models.PullRequest, mergeStyle models.MergeStyle, cmd *git.Command, tmpBasePath string) error {
var outbuf, errbuf strings.Builder
if err := cmd.RunInDirPipeline(tmpBasePath, &outbuf, &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(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("diff-tree", "--no-commit-id", "--name-only", "-r", "-z", "--root", baseBranch, headBranch, "--").RunInDirPipeline(repoPath, &outbuf, &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
}
// IsSignedIfRequired check if merge will be signed if required
func IsSignedIfRequired(pr *models.PullRequest, doer *models.User) (bool, error) {
if err := pr.LoadProtectedBranch(); err != nil {
return false, err
}
if pr.ProtectedBranch == nil || !pr.ProtectedBranch.RequireSignedCommits {
return true, nil
}
sign, _, _, err := pr.SignMerge(doer, pr.BaseRepo.RepoPath(), pr.BaseBranch, pr.GetGitRefName())
return sign, err
}
// IsUserAllowedToMerge check if user is allowed to merge PR with given permissions and branch protections
func IsUserAllowedToMerge(pr *models.PullRequest, p models.Permission, user *models.User) (bool, error) {
if user == nil {
return false, nil
}
err := pr.LoadProtectedBranch()
if err != nil {
return false, err
}
if (p.CanWrite(models.UnitTypeCode) && pr.ProtectedBranch == nil) || (pr.ProtectedBranch != nil && pr.ProtectedBranch.IsUserMergeWhitelisted(user.ID, p)) {
return true, nil
}
return false, nil
}
// CheckPRReadyToMerge checks whether the PR is ready to be merged (reviews and status checks)
func CheckPRReadyToMerge(pr *models.PullRequest, skipProtectedFilesCheck bool) (err error) {
if err = pr.LoadBaseRepo(); err != nil {
return fmt.Errorf("LoadBaseRepo: %v", err)
}
if err = pr.LoadProtectedBranch(); err != nil {
return fmt.Errorf("LoadProtectedBranch: %v", err)
}
if pr.ProtectedBranch == nil {
return nil
}
isPass, err := IsPullCommitStatusPass(pr)
if err != nil {
return err
}
if !isPass {
return models.ErrNotAllowedToMerge{
Reason: "Not all required status checks successful",
}
}
if !pr.ProtectedBranch.HasEnoughApprovals(pr) {
return models.ErrNotAllowedToMerge{
Reason: "Does not have enough approvals",
}
}
if pr.ProtectedBranch.MergeBlockedByRejectedReview(pr) {
return models.ErrNotAllowedToMerge{
Reason: "There are requested changes",
}
}
if pr.ProtectedBranch.MergeBlockedByOfficialReviewRequests(pr) {
return models.ErrNotAllowedToMerge{
Reason: "There are official review requests",
}
}
if pr.ProtectedBranch.MergeBlockedByOutdatedBranch(pr) {
return models.ErrNotAllowedToMerge{
Reason: "The head branch is behind the base branch",
}
}
if skipProtectedFilesCheck {
return nil
}
if pr.ProtectedBranch.MergeBlockedByProtectedFiles(pr) {
return models.ErrNotAllowedToMerge{
Reason: "Changed protected files",
}
}
return nil
}
// MergedManually mark pr as merged manually
func MergedManually(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repository, commitID string) (err error) {
prUnit, err := pr.BaseRepo.GetUnit(models.UnitTypePullRequests)
if err != nil {
return
}
prConfig := prUnit.PullRequestsConfig()
// Check if merge style is correct and allowed
if !prConfig.IsMergeStyleAllowed(models.MergeStyleManuallyMerged) {
return models.ErrInvalidMergeStyle{ID: pr.BaseRepo.ID, Style: models.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
}
ok, err := baseGitRepo.IsCommitInBranch(commitID, pr.BaseBranch)
if err != nil {
return
}
if !ok {
return fmt.Errorf("Wrong commit ID")
}
pr.MergedCommitID = commitID
pr.MergedUnix = timeutil.TimeStamp(commit.Author.When.Unix())
pr.Status = models.PullRequestStatusManuallyMerged
pr.Merger = doer
pr.MergerID = doer.ID
merged := false
if merged, err = pr.SetMerged(); err != nil {
return
} else if !merged {
return fmt.Errorf("SetMerged failed")
}
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, commit.ID.String())
return nil
}