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Adjust error reporting from merge failures and use LC_ALL=C for git (#8548)

Browse source 
There are two major components to this PR:

* This PR handles merge and rebase failures from merging a little more nicely with Flash errors rather a 500.
* All git commands are run in the LC_ALL="C" environment to ensure that error messages are in English. This DefaultLocale is defined in a way that if necessary (due to platform weirdness) it can be overridden at build time using LDFLAGS="-X "code.gitea.io/gitea/modules/git.DefaultLocale=C"" with C changed for the locale as necessary.
This commit is contained in:
zeripath 2019-11-10 08:42:51 +00:00 committed by GitHub
parent 31416a5f4e
commit 8eeb2877d5
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 483 additions and 95 deletions
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137
integrations/pull_merge_test.go
View file

@ -5,15 +5,22 @@
package integrations
import (
"bytes"
"fmt"
"net/http"
"net/http/httptest"
"net/url"
"os"
"path"
"strings"
"testing"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/test"
"code.gitea.io/gitea/services/pull"
"github.com/stretchr/testify/assert"
"github.com/unknwon/i18n"
@ -202,3 +209,133 @@ func TestCantMergeWorkInProgress(t *testing.T) {
assert.Equal(t, replacer.Replace(expected), text, "Unable to find WIP text")
})
}
func TestCantMergeConflict(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
prepareTestEnv(t)
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "conflict", "README.md", "Hello, World (Edited Once)\n")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "base", "README.md", "Hello, World (Edited Twice)\n")
// Use API to create a conflicting pr
token := getTokenForLoggedInUser(t, session)
req := NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls?token=%s", "user1", "repo1", token), &api.CreatePullRequestOption{
Head: "conflict",
Base: "base",
Title: "create a conflicting pr",
})
session.MakeRequest(t, req, 201)
// Now this PR will be marked conflict - or at least a race will do - so drop down to pure code at this point...
user1 := models.AssertExistsAndLoadBean(t, &models.User{
Name: "user1",
}).(*models.User)
repo1 := models.AssertExistsAndLoadBean(t, &models.Repository{
OwnerID: user1.ID,
Name: "repo1",
}).(*models.Repository)
pr := models.AssertExistsAndLoadBean(t, &models.PullRequest{
HeadRepoID: repo1.ID,
BaseRepoID: repo1.ID,
HeadBranch: "conflict",
BaseBranch: "base",
}).(*models.PullRequest)
gitRepo, err := git.OpenRepository(models.RepoPath(user1.Name, repo1.Name))
assert.NoError(t, err)
err = pull.Merge(pr, user1, gitRepo, models.MergeStyleMerge, "CONFLICT")
assert.Error(t, err, "Merge should return an error due to conflict")
assert.True(t, models.IsErrMergeConflicts(err), "Merge error is not a conflict error")
err = pull.Merge(pr, user1, gitRepo, models.MergeStyleRebase, "CONFLICT")
assert.Error(t, err, "Merge should return an error due to conflict")
assert.True(t, models.IsErrRebaseConflicts(err), "Merge error is not a conflict error")
})
}
func TestCantMergeUnrelated(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
prepareTestEnv(t)
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "base", "README.md", "Hello, World (Edited Twice)\n")
// Now we want to create a commit on a branch that is totally unrelated to our current head
// Drop down to pure code at this point
user1 := models.AssertExistsAndLoadBean(t, &models.User{
Name: "user1",
}).(*models.User)
repo1 := models.AssertExistsAndLoadBean(t, &models.Repository{
OwnerID: user1.ID,
Name: "repo1",
}).(*models.Repository)
path := models.RepoPath(user1.Name, repo1.Name)
_, err := git.NewCommand("read-tree", "--empty").RunInDir(path)
assert.NoError(t, err)
stdin := bytes.NewBufferString("Unrelated File")
var stdout strings.Builder
err = git.NewCommand("hash-object", "-w", "--stdin").RunInDirFullPipeline(path, &stdout, nil, stdin)
assert.NoError(t, err)
sha := strings.TrimSpace(stdout.String())
_, err = git.NewCommand("update-index", "--add", "--replace", "--cacheinfo", "100644", sha, "somewher-over-the-rainbow").RunInDir(path)
assert.NoError(t, err)
treeSha, err := git.NewCommand("write-tree").RunInDir(path)
assert.NoError(t, err)
treeSha = strings.TrimSpace(treeSha)
commitTimeStr := time.Now().Format(time.RFC3339)
doerSig := user1.NewGitSig()
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+doerSig.Name,
"GIT_AUTHOR_EMAIL="+doerSig.Email,
"GIT_AUTHOR_DATE="+commitTimeStr,
"GIT_COMMITTER_NAME="+doerSig.Name,
"GIT_COMMITTER_EMAIL="+doerSig.Email,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
messageBytes := new(bytes.Buffer)
_, _ = messageBytes.WriteString("Unrelated")
_, _ = messageBytes.WriteString("\n")
stdout.Reset()
err = git.NewCommand("commit-tree", treeSha).RunInDirTimeoutEnvFullPipeline(env, -1, path, &stdout, nil, messageBytes)
assert.NoError(t, err)
commitSha := strings.TrimSpace(stdout.String())
_, err = git.NewCommand("branch", "unrelated", commitSha).RunInDir(path)
assert.NoError(t, err)
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "conflict", "README.md", "Hello, World (Edited Once)\n")
// Use API to create a conflicting pr
token := getTokenForLoggedInUser(t, session)
req := NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls?token=%s", "user1", "repo1", token), &api.CreatePullRequestOption{
Head: "unrelated",
Base: "base",
Title: "create an unrelated pr",
})
session.MakeRequest(t, req, 201)
// Now this PR could be marked conflict - or at least a race may occur - so drop down to pure code at this point...
gitRepo, err := git.OpenRepository(path)
assert.NoError(t, err)
pr := models.AssertExistsAndLoadBean(t, &models.PullRequest{
HeadRepoID: repo1.ID,
BaseRepoID: repo1.ID,
HeadBranch: "unrelated",
BaseBranch: "base",
}).(*models.PullRequest)
err = pull.Merge(pr, user1, gitRepo, models.MergeStyleMerge, "UNRELATED")
assert.Error(t, err, "Merge should return an error due to unrelated")
assert.True(t, models.IsErrMergeUnrelatedHistories(err), "Merge error is not a unrelated histories error")
})
}

73
models/error.go
View file

@ -1206,6 +1206,79 @@ func (err ErrInvalidMergeStyle) Error() string {
err.ID, err.Style)
}
// ErrMergeConflicts represents an error if merging fails with a conflict
type ErrMergeConflicts struct {
Style MergeStyle
StdOut string
StdErr string
Err error
}
// IsErrMergeConflicts checks if an error is a ErrMergeConflicts.
func IsErrMergeConflicts(err error) bool {
_, ok := err.(ErrMergeConflicts)
return ok
}
func (err ErrMergeConflicts) Error() string {
return fmt.Sprintf("Merge Conflict Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrMergeUnrelatedHistories represents an error if merging fails due to unrelated histories
type ErrMergeUnrelatedHistories struct {
Style MergeStyle
StdOut string
StdErr string
Err error
}
// IsErrMergeUnrelatedHistories checks if an error is a ErrMergeUnrelatedHistories.
func IsErrMergeUnrelatedHistories(err error) bool {
_, ok := err.(ErrMergeUnrelatedHistories)
return ok
}
func (err ErrMergeUnrelatedHistories) Error() string {
return fmt.Sprintf("Merge UnrelatedHistories Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrMergePushOutOfDate represents an error if merging fails due to unrelated histories
type ErrMergePushOutOfDate struct {
Style MergeStyle
StdOut string
StdErr string
Err error
}
// IsErrMergePushOutOfDate checks if an error is a ErrMergePushOutOfDate.
func IsErrMergePushOutOfDate(err error) bool {
_, ok := err.(ErrMergePushOutOfDate)
return ok
}
func (err ErrMergePushOutOfDate) Error() string {
return fmt.Sprintf("Merge PushOutOfDate Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrRebaseConflicts represents an error if rebase fails with a conflict
type ErrRebaseConflicts struct {
Style MergeStyle
CommitSHA string
StdOut string
StdErr string
Err error
}
// IsErrRebaseConflicts checks if an error is a ErrRebaseConflicts.
func IsErrRebaseConflicts(err error) bool {
_, ok := err.(ErrRebaseConflicts)
return ok
}
func (err ErrRebaseConflicts) Error() string {
return fmt.Sprintf("Rebase Error: %v: Whilst Rebasing: %s\n%s\n%s", err.Err, err.CommitSHA, err.StdErr, err.StdOut)
}
// _________ __
// \_ ___ \ ____ _____ _____ ____ _____/ |_
// / \ \/ / _ \ / \ / \_/ __ \ / \ __\

11
modules/git/command.go
View file

@ -9,6 +9,7 @@ import (
"context"
"fmt"
"io"
"os"
"os/exec"
"strings"
"time"
@ -24,6 +25,9 @@ var (
DefaultCommandExecutionTimeout = 60 * time.Second
)
// DefaultLocale is the default LC_ALL to run git commands in.
const DefaultLocale = "C"
// Command represents a command with its subcommands or arguments.
type Command struct {
name string
@ -77,7 +81,12 @@ func (c *Command) RunInDirTimeoutEnvFullPipeline(env []string, timeout time.Dura
defer cancel()
cmd := exec.CommandContext(ctx, c.name, c.args...)
cmd.Env = env
if env == nil {
cmd.Env = append(os.Environ(), fmt.Sprintf("LC_ALL=%s", DefaultLocale))
} else {
cmd.Env = env
cmd.Env = append(cmd.Env, fmt.Sprintf("LC_ALL=%s", DefaultLocale))
}
cmd.Dir = dir
cmd.Stdout = stdout
cmd.Stderr = stderr

4
options/locale/locale_en-US.ini
View file

@ -1026,6 +1026,10 @@ pulls.rebase_merge_pull_request = Rebase and Merge
pulls.rebase_merge_commit_pull_request = Rebase and Merge (--no-ff)
pulls.squash_merge_pull_request = Squash and Merge
pulls.invalid_merge_option = You cannot use this merge option for this pull request.
pulls.merge_conflict = Merge Failed: There was a conflict whilst merging: %[1]s<br>%[2]s<br>Hint: Try a different strategy
pulls.rebase_conflict = Merge Failed: There was a conflict whilst rebasing commit: %s[1]<br>%[1]s<br>%[2]s<br>Hint:Try a different strategy
pulls.unrelated_histories = Merge Failed: The merge head and base do not share a common history. Hint: Try a different strategy
pulls.merge_out_of_date = Merge Failed: Whilst generating the merge, the base was updated. Hint: Try again.
pulls.open_unmerged_pull_exists = `You cannot perform a reopen operation because there is a pending pull request (#%d) with identical properties.`
pulls.status_checking = Some checks are pending
pulls.status_checks_success = All checks were successful

12
routers/api/v1/repo/pull.go
View file

@ -626,6 +626,18 @@ func MergePullRequest(ctx *context.APIContext, form auth.MergePullRequestForm) {
if models.IsErrInvalidMergeStyle(err) {
ctx.Status(405)
return
} else if models.IsErrMergeConflicts(err) {
conflictError := err.(models.ErrMergeConflicts)
ctx.JSON(http.StatusConflict, conflictError)
} else if models.IsErrRebaseConflicts(err) {
conflictError := err.(models.ErrRebaseConflicts)
ctx.JSON(http.StatusConflict, conflictError)
} else if models.IsErrMergeUnrelatedHistories(err) {
conflictError := err.(models.ErrMergeUnrelatedHistories)
ctx.JSON(http.StatusConflict, conflictError)
} else if models.IsErrMergePushOutOfDate(err) {
ctx.Status(http.StatusConflict)
return
}
ctx.Error(500, "Merge", err)
return

30
routers/repo/pull.go
View file

@ -10,6 +10,7 @@ import (
"container/list"
"crypto/subtle"
"fmt"
"html"
"io"
"path"
"strings"
@ -660,10 +661,39 @@ func MergePullRequest(ctx *context.Context, form auth.MergePullRequestForm) {
}
if err = pull_service.Merge(pr, ctx.User, ctx.Repo.GitRepo, models.MergeStyle(form.Do), message); err != nil {
sanitize := func(x string) string {
runes := []rune(x)
if len(runes) > 512 {
x = "..." + string(runes[len(runes)-512:])
}
return strings.Replace(html.EscapeString(x), "\n", "<br>", -1)
}
if models.IsErrInvalidMergeStyle(err) {
ctx.Flash.Error(ctx.Tr("repo.pulls.invalid_merge_option"))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
} else if models.IsErrMergeConflicts(err) {
conflictError := err.(models.ErrMergeConflicts)
ctx.Flash.Error(ctx.Tr("repo.pulls.merge_conflict", sanitize(conflictError.StdErr), sanitize(conflictError.StdOut)))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
} else if models.IsErrRebaseConflicts(err) {
conflictError := err.(models.ErrRebaseConflicts)
ctx.Flash.Error(ctx.Tr("repo.pulls.rebase_conflict", sanitize(conflictError.CommitSHA), sanitize(conflictError.StdErr), sanitize(conflictError.StdOut)))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
} else if models.IsErrMergeUnrelatedHistories(err) {
log.Debug("MergeUnrelatedHistories error: %v", err)
ctx.Flash.Error(ctx.Tr("repo.pulls.unrelated_histories"))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
} else if models.IsErrMergePushOutOfDate(err) {
log.Debug("MergePushOutOfDate error: %v", err)
ctx.Flash.Error(ctx.Tr("repo.pulls.merge_out_of_date"))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
}
ctx.ServerError("Merge", err)
return

311
services/pull/merge.go
View file

@ -32,22 +32,27 @@ import (
func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repository, mergeStyle models.MergeStyle, message string) (err error) {
binVersion, err := git.BinVersion()
if err != nil {
log.Error("git.BinVersion: %v", err)
return fmt.Errorf("Unable to get git version: %v", err)
}
if err = pr.GetHeadRepo(); err != nil {
log.Error("GetHeadRepo: %v", err)
return fmt.Errorf("GetHeadRepo: %v", err)
} else if err = pr.GetBaseRepo(); err != nil {
log.Error("GetBaseRepo: %v", err)
return fmt.Errorf("GetBaseRepo: %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()
if err := pr.CheckUserAllowedToMerge(doer); err != nil {
log.Error("CheckUserAllowedToMerge(%v): %v", doer, err)
return fmt.Errorf("CheckUserAllowedToMerge: %v", err)
}
@ -63,6 +68,7 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
// Clone base repo.
tmpBasePath, err := models.CreateTemporaryPath("merge")
if err != nil {
log.Error("CreateTemporaryPath: %v", err)
return err
}
@ -75,7 +81,8 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
headRepoPath := pr.HeadRepo.RepoPath()
if err := git.InitRepository(tmpBasePath, false); err != nil {
return fmt.Errorf("git init: %v", err)
log.Error("git init tmpBasePath: %v", err)
return err
}
remoteRepoName := "head_repo"
@ -86,102 +93,141 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
p := filepath.Join(staging, ".git", "objects", "info", "alternates")
f, err := os.OpenFile(p, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
if err != nil {
log.Error("Could not create .git/objects/info/alternates file in %s: %v", staging, err)
return err
}
defer f.Close()
data := filepath.Join(cache, "objects")
if _, err := fmt.Fprintln(f, data); err != nil {
log.Error("Could not write to .git/objects/info/alternates file in %s: %v", staging, err)
return err
}
return nil
}
if err := addCacheRepo(tmpBasePath, baseGitRepo.Path); err != nil {
return fmt.Errorf("addCacheRepo [%s -> %s]: %v", headRepoPath, tmpBasePath, err)
log.Error("Unable to add base repository to temporary repo [%s -> %s]: %v", pr.BaseRepo.FullName(), tmpBasePath, err)
return fmt.Errorf("Unable to add base repository to temporary repo [%s -> tmpBasePath]: %v", pr.BaseRepo.FullName(), err)
}
var errbuf strings.Builder
if err := git.NewCommand("remote", "add", "-t", pr.BaseBranch, "-m", pr.BaseBranch, "origin", baseGitRepo.Path).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git remote add [%s -> %s]: %s", baseGitRepo.Path, tmpBasePath, errbuf.String())
var outbuf, errbuf strings.Builder
if err := git.NewCommand("remote", "add", "-t", pr.BaseBranch, "-m", pr.BaseBranch, "origin", baseGitRepo.Path).RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("Unable to add base repository as origin [%s -> %s]: %v\n%s\n%s", pr.BaseRepo.FullName(), tmpBasePath, err, outbuf.String(), errbuf.String())
return fmt.Errorf("Unable to add base repository as origin [%s -> tmpBasePath]: %v\n%s\n%s", pr.BaseRepo.FullName(), err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := git.NewCommand("fetch", "origin", "--no-tags", pr.BaseBranch+":"+baseBranch, pr.BaseBranch+":original_"+baseBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git fetch [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
if err := git.NewCommand("fetch", "origin", "--no-tags", pr.BaseBranch+":"+baseBranch, pr.BaseBranch+":original_"+baseBranch).RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("Unable to fetch origin base branch [%s:%s -> base, original_base in %s]: %v:\n%s\n%s", pr.BaseRepo.FullName(), pr.BaseBranch, tmpBasePath, err, outbuf.String(), errbuf.String())
return fmt.Errorf("Unable to fetch origin base branch [%s:%s -> base, original_base in tmpBasePath]: %v\n%s\n%s", pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := git.NewCommand("symbolic-ref", "HEAD", git.BranchPrefix+baseBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git symbolic-ref HEAD base [%s]: %s", tmpBasePath, errbuf.String())
if err := git.NewCommand("symbolic-ref", "HEAD", git.BranchPrefix+baseBranch).RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("Unable to set HEAD as base branch [%s]: %v\n%s\n%s", tmpBasePath, err, outbuf.String(), errbuf.String())
return fmt.Errorf("Unable to set HEAD as base branch [tmpBasePath]: %v\n%s\n%s", err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
if err := addCacheRepo(tmpBasePath, headRepoPath); err != nil {
return fmt.Errorf("addCacheRepo [%s -> %s]: %v", headRepoPath, tmpBasePath, err)
log.Error("Unable to add head repository to temporary repo [%s -> %s]: %v", pr.HeadRepo.FullName(), tmpBasePath, err)
return fmt.Errorf("Unable to head base repository to temporary repo [%s -> tmpBasePath]: %v", pr.HeadRepo.FullName(), err)
}
if err := git.NewCommand("remote", "add", remoteRepoName, headRepoPath).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git remote add [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
if err := git.NewCommand("remote", "add", remoteRepoName, headRepoPath).RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("Unable to add head repository as head_repo [%s -> %s]: %v\n%s\n%s", pr.HeadRepo.FullName(), tmpBasePath, err, outbuf.String(), errbuf.String())
return fmt.Errorf("Unable to add head repository as head_repo [%s -> tmpBasePath]: %v\n%s\n%s", pr.HeadRepo.FullName(), err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
trackingBranch := "tracking"
// Fetch head branch
if err := git.NewCommand("fetch", "--no-tags", remoteRepoName, pr.HeadBranch+":"+trackingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git fetch [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
if err := git.NewCommand("fetch", "--no-tags", remoteRepoName, pr.HeadBranch+":"+trackingBranch).RunInDirPipeline(tmpBasePath, &outbuf, &errbuf); err != nil {
log.Error("Unable to fetch head_repo head branch [%s:%s -> tracking in %s]: %v:\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, tmpBasePath, err, outbuf.String(), errbuf.String())
return fmt.Errorf("Unable to fetch head_repo head branch [%s:%s -> tracking in tmpBasePath]: %v\n%s\n%s", pr.HeadRepo.FullName(), pr.HeadBranch, err, outbuf.String(), errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
stagingBranch := "staging"
// 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 {
return fmt.Errorf("creating directory failed [%s]: %v", infoPath, err)
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 {
return fmt.Errorf("Writing sparse-checkout file to %s: %v", sparseCheckoutListPath, err)
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)
}
gitConfigCommand := func() func() *git.Command {
binVersion, err := git.BinVersion()
if err != nil {
log.Fatal("Error retrieving git version: %v", err)
var gitConfigCommand func() *git.Command
if version.Compare(binVersion, "1.8.0", ">=") {
gitConfigCommand = func() *git.Command {
return git.NewCommand("config", "--local")
}
if version.Compare(binVersion, "1.8.0", ">=") {
return func() *git.Command {
return git.NewCommand("config", "--local")
}
}
return func() *git.Command {
} 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, nil, &errbuf); err != nil {
return fmt.Errorf("git config [filter.lfs.process -> <> ]: %v", errbuf.String())
}
if err := gitConfigCommand().AddArguments("filter.lfs.required", "false").RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git config [filter.lfs.required -> <false> ]: %v", errbuf.String())
}
if err := gitConfigCommand().AddArguments("filter.lfs.clean", "").RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git config [filter.lfs.clean -> <> ]: %v", errbuf.String())
}
if err := gitConfigCommand().AddArguments("filter.lfs.smudge", "").RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git config [filter.lfs.smudge -> <> ]: %v", errbuf.String())
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("core.sparseCheckout", "true").RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git config [core.sparsecheckout -> true]: %v", errbuf.String())
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, nil, &errbuf); err != nil {
return fmt.Errorf("git read-tree HEAD: %s", errbuf.String())
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()
// Determine if we should sign
signArg := ""
@ -210,80 +256,102 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
// Merge commits.
switch mergeStyle {
case models.MergeStyleMerge:
if err := git.NewCommand("merge", "--no-ff", "--no-commit", trackingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git merge --no-ff --no-commit [%s]: %v - %s", tmpBasePath, err, errbuf.String())
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 signArg == "" {
if err := git.NewCommand("commit", "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git commit [%s]: %v - %s", tmpBasePath, err, errbuf.String())
}
} else {
if err := git.NewCommand("commit", signArg, "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git commit [%s]: %v - %s", tmpBasePath, err, errbuf.String())
}
if err := commitAndSignNoAuthor(pr, message, signArg, tmpBasePath, env); err != nil {
log.Error("Unable to make final commit: %v", err)
return err
}
case models.MergeStyleRebase:
// Checkout head branch
if err := git.NewCommand("checkout", "-b", stagingBranch, trackingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git checkout: %s", errbuf.String())
}
// Rebase before merging
if err := git.NewCommand("rebase", "-q", baseBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git rebase [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
}
// Checkout base branch again
if err := git.NewCommand("checkout", baseBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git checkout: %s", errbuf.String())
}
// Merge fast forward
if err := git.NewCommand("merge", "--ff-only", "-q", stagingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git merge --ff-only [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
}
fallthrough
case models.MergeStyleRebaseMerge:
// Checkout head branch
if err := git.NewCommand("checkout", "-b", stagingBranch, trackingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git checkout: %s", errbuf.String())
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", "-q", baseBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git rebase [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
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 {
// The original commit SHA1 that is failing will be in .git/rebase-apply/original-commit
commitShaBytes, readErr := ioutil.ReadFile(filepath.Join(tmpBasePath, ".git", "rebase-apply", "original-commit"))
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())
}
log.Debug("RebaseConflict at %s [%s:%s -> %s:%s]: %v\n%s\n%s", strings.TrimSpace(string(commitShaBytes)), pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), pr.BaseBranch, err, outbuf.String(), errbuf.String())
return models.ErrRebaseConflicts{
Style: mergeStyle,
CommitSHA: strings.TrimSpace(string(commitShaBytes)),
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, nil, &errbuf); err != nil {
return fmt.Errorf("git checkout: %s", errbuf.String())
}
// Prepare merge with commit
if err := git.NewCommand("merge", "--no-ff", "--no-commit", "-q", stagingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git merge --no-ff [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
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()
// Set custom message and author and create merge commit
if signArg == "" {
if err := git.NewCommand("commit", "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git commit [%s]: %v - %s", tmpBasePath, err, errbuf.String())
}
cmd := git.NewCommand("merge")
if mergeStyle == models.MergeStyleRebase {
cmd.AddArguments("--ff-only")
} else {
if err := git.NewCommand("commit", signArg, "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git commit [%s]: %v - %s", tmpBasePath, err, errbuf.String())
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
if err := git.NewCommand("merge", "-q", "--squash", trackingBranch).RunInDirPipeline(tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git merge --squash [%s -> %s]: %s", headRepoPath, tmpBasePath, errbuf.String())
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
}
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, nil, &errbuf); err != nil {
return fmt.Errorf("git commit [%s]: %v - %s", tmpBasePath, err, errbuf.String())
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 err := git.NewCommand("commit", signArg, fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email), "-m", message).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {
return fmt.Errorf("git commit [%s]: %v - %s", tmpBasePath, err, errbuf.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}
}
@ -329,9 +397,19 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
)
// Push back to upstream.
if err := git.NewCommand("push", "origin", baseBranch+":"+pr.BaseBranch).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {
if err := git.NewCommand("push", "origin", baseBranch+":"+pr.BaseBranch).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &errbuf); err != nil {
if strings.Contains(errbuf.String(), "non-fast-forward") {
return models.ErrMergePushOutOfDate{
Style: mergeStyle,
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
}
return fmt.Errorf("git push: %s", errbuf.String())
}
outbuf.Reset()
errbuf.Reset()
pr.MergedCommitID, err = baseGitRepo.GetBranchCommitID(pr.BaseBranch)
if err != nil {
@ -364,6 +442,51 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
return 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) {