Ensure that git daemon export ok is created for mirrors (#17243) (#17306)

Backport #17243

There is an issue with #16508 where it appears that create repo requires that the
repo does not exist. This causes #17241 where an error is reported because of this.

This PR fixes this and also runs update-server-info for mirrors and generated repos.

Fix #17241

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

models/repo.go

@@ -1152,16 +1152,6 @@ func CreateRepository(ctx DBContext, doer, u *User, repo *Repository, overwriteO
 		return fmt.Errorf("recalculateAccesses: %v", err)
 	}
 
-	if u.Visibility == api.VisibleTypePublic && !repo.IsPrivate {
-		// Create/Remove git-daemon-export-ok for git-daemon...
-		daemonExportFile := path.Join(repo.RepoPath(), `git-daemon-export-ok`)
-		if f, err := os.Create(daemonExportFile); err != nil {
-			log.Error("Failed to create %s: %v", daemonExportFile, err)
-		} else {
-			f.Close()
-		}
-	}
-
 	if setting.Service.AutoWatchNewRepos {
 		if err = watchRepo(ctx.e, doer.ID, repo.ID, true); err != nil {
 			return fmt.Errorf("watchRepo: %v", err)
@@ -1175,6 +1165,46 @@ func CreateRepository(ctx DBContext, doer, u *User, repo *Repository, overwriteO
 	return nil
 }
 
+// CheckDaemonExportOK creates/removes git-daemon-export-ok for git-daemon...
+func (repo *Repository) CheckDaemonExportOK() error {
+	return repo.checkDaemonExportOK(x)
+}
+
+// CheckDaemonExportOKCtx creates/removes git-daemon-export-ok for git-daemon...
+func (repo *Repository) CheckDaemonExportOKCtx(ctx DBContext) error {
+	return repo.checkDaemonExportOK(ctx.e)
+}
+
+func (repo *Repository) checkDaemonExportOK(e Engine) error {
+	if err := repo.getOwner(e); err != nil {
+		return err
+	}
+
+	// Create/Remove git-daemon-export-ok for git-daemon...
+	daemonExportFile := path.Join(repo.RepoPath(), `git-daemon-export-ok`)
+
+	isExist, err := util.IsExist(daemonExportFile)
+	if err != nil {
+		log.Error("Unable to check if %s exists. Error: %v", daemonExportFile, err)
+		return err
+	}
+
+	isPublic := !repo.IsPrivate && repo.Owner.Visibility == api.VisibleTypePublic
+	if !isPublic && isExist {
+		if err = util.Remove(daemonExportFile); err != nil {
+			log.Error("Failed to remove %s: %v", daemonExportFile, err)
+		}
+	} else if isPublic && !isExist {
+		if f, err := os.Create(daemonExportFile); err != nil {
+			log.Error("Failed to create %s: %v", daemonExportFile, err)
+		} else {
+			f.Close()
+		}
+	}
+
+	return nil
+}
+
 func countRepositories(userID int64, private bool) int64 {
 	sess := x.Where("id > 0")
 
@@ -1324,24 +1354,9 @@ func updateRepository(e Engine, repo *Repository, visibilityChanged bool) (err e
 		}
 
 		// Create/Remove git-daemon-export-ok for git-daemon...
-		daemonExportFile := path.Join(repo.RepoPath(), `git-daemon-export-ok`)
+		if err := repo.checkDaemonExportOK(e); err != nil {
-		isExist, err := util.IsExist(daemonExportFile)
-		isPublic := !repo.IsPrivate && repo.Owner.Visibility == api.VisibleTypePublic
-		if err != nil {
-			log.Error("Unable to check if %s exists. Error: %v", daemonExportFile, err)
 			return err
 		}
-		if !isPublic && isExist {
-			if err = util.Remove(daemonExportFile); err != nil {
-				log.Error("Failed to remove %s: %v", daemonExportFile, err)
-			}
-		} else if isPublic && !isExist {
-			if f, err := os.Create(daemonExportFile); err != nil {
-				log.Error("Failed to create %s: %v", daemonExportFile, err)
-			} else {
-				f.Close()
-			}
-		}
 
 		forkRepos, err := getRepositoriesByForkID(e, repo.ID)
 		if err != nil {

modules/repository/adopt.go

@@ -66,6 +66,9 @@ func AdoptRepository(doer, u *models.User, opts models.CreateRepoOptions) (*mode
 		if err := adoptRepository(ctx, repoPath, doer, repo, opts); err != nil {
 			return fmt.Errorf("createDelegateHooks: %v", err)
 		}
+		if err := repo.CheckDaemonExportOKCtx(ctx); err != nil {
+			return fmt.Errorf("checkDaemonExportOK: %v", err)
+		}
 
 		// Initialize Issue Labels if selected
 		if len(opts.IssueLabels) > 0 {

modules/repository/create.go

@@ -103,6 +103,10 @@ func CreateRepository(doer, u *models.User, opts models.CreateRepoOptions) (*mod
 			}
 		}
 
+		if err := repo.CheckDaemonExportOKCtx(ctx); err != nil {
+			return fmt.Errorf("checkDaemonExportOK: %v", err)
+		}
+
 		if stdout, err := git.NewCommand("update-server-info").
 			SetDescription(fmt.Sprintf("CreateRepository(git update-server-info): %s", repoPath)).
 			RunInDir(repoPath); err != nil {

modules/repository/fork.go

@@ -95,14 +95,17 @@ func ForkRepository(doer, owner *models.User, oldRepo *models.Repository, name,
 		needsRollback = true
 
 		repoPath := models.RepoPath(owner.Name, repo.Name)
-		if stdout, err := git.NewCommand(
+		if stdout, err := git.NewCommand("clone", "--bare", oldRepoPath, repoPath).
-			"clone", "--bare", oldRepoPath, repoPath).
 			SetDescription(fmt.Sprintf("ForkRepository(git clone): %s to %s", oldRepo.FullName(), repo.FullName())).
 			RunInDirTimeout(10*time.Minute, ""); err != nil {
 			log.Error("Fork Repository (git clone) Failed for %v (from %v):\nStdout: %s\nError: %v", repo, oldRepo, stdout, err)
 			return fmt.Errorf("git clone: %v", err)
 		}
 
+		if err := repo.CheckDaemonExportOKCtx(ctx); err != nil {
+			return fmt.Errorf("checkDaemonExportOK: %v", err)
+		}
+
 		if stdout, err := git.NewCommand("update-server-info").
 			SetDescription(fmt.Sprintf("ForkRepository(git update-server-info): %s", repo.FullName())).
 			RunInDir(repoPath); err != nil {

modules/repository/generate.go

@@ -275,5 +275,16 @@ func GenerateRepository(ctx models.DBContext, doer, owner *models.User, template
 		return generateRepo, err
 	}
 
+	if err = generateRepo.CheckDaemonExportOKCtx(ctx); err != nil {
+		return generateRepo, fmt.Errorf("checkDaemonExportOK: %v", err)
+	}
+
+	if stdout, err := git.NewCommand("update-server-info").
+		SetDescription(fmt.Sprintf("GenerateRepository(git update-server-info): %s", repoPath)).
+		RunInDir(repoPath); err != nil {
+		log.Error("GenerateRepository(git update-server-info) in %v: Stdout: %s\nError: %v", generateRepo, stdout, err)
+		return generateRepo, fmt.Errorf("error in GenerateRepository(git update-server-info): %v", err)
+	}
+
 	return generateRepo, nil
 }

modules/repository/repo.go

@@ -95,6 +95,21 @@ func MigrateRepositoryGitData(ctx context.Context, u *models.User, repo *models.
 		}
 	}
 
+	if repo.OwnerID == u.ID {
+		repo.Owner = u
+	}
+
+	if err = repo.CheckDaemonExportOK(); err != nil {
+		return repo, fmt.Errorf("checkDaemonExportOK: %v", err)
+	}
+
+	if stdout, err := git.NewCommandContext(ctx, "update-server-info").
+		SetDescription(fmt.Sprintf("MigrateRepositoryGitData(git update-server-info): %s", repoPath)).
+		RunInDir(repoPath); err != nil {
+		log.Error("MigrateRepositoryGitData(git update-server-info) in %v: Stdout: %s\nError: %v", repo, stdout, err)
+		return repo, fmt.Errorf("error in MigrateRepositoryGitData(git update-server-info): %v", err)
+	}
+
 	gitRepo, err := git.OpenRepository(repoPath)
 	if err != nil {
 		return repo, fmt.Errorf("OpenRepository: %v", err)