1 files changed, 154 insertions, 0 deletions
diff --git a/services/task/migrate.go b/services/task/migrate.go
new file mode 100644
index 0000000..9cef77a
--- /dev/null
+++ b/services/task/migrate.go
@@ -0,0 +1,154 @@
+// Copyright 2019 Gitea. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package task
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	admin_model "code.gitea.io/gitea/models/admin"
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/graceful"
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/migration"
+	"code.gitea.io/gitea/modules/process"
+	"code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/migrations"
+	notify_service "code.gitea.io/gitea/services/notify"
+)
+
+func handleCreateError(owner *user_model.User, err error) error {
+	switch {
+	case repo_model.IsErrReachLimitOfRepo(err):
+		return fmt.Errorf("you have already reached your limit of %d repositories", owner.MaxCreationLimit())
+	case repo_model.IsErrRepoAlreadyExist(err):
+		return errors.New("the repository name is already used")
+	case db.IsErrNameReserved(err):
+		return fmt.Errorf("the repository name '%s' is reserved", err.(db.ErrNameReserved).Name)
+	case db.IsErrNamePatternNotAllowed(err):
+		return fmt.Errorf("the pattern '%s' is not allowed in a repository name", err.(db.ErrNamePatternNotAllowed).Pattern)
+	default:
+		return err
+	}
+}
+
+func runMigrateTask(ctx context.Context, t *admin_model.Task) (err error) {
+	defer func(ctx context.Context) {
+		if e := recover(); e != nil {
+			err = fmt.Errorf("PANIC whilst trying to do migrate task: %v", e)
+			log.Critical("PANIC during runMigrateTask[%d] by DoerID[%d] to RepoID[%d] for OwnerID[%d]: %v\nStacktrace: %v", t.ID, t.DoerID, t.RepoID, t.OwnerID, e, log.Stack(2))
+		}
+		if err == nil {
+			err = admin_model.FinishMigrateTask(ctx, t)
+			if err == nil {
+				notify_service.MigrateRepository(ctx, t.Doer, t.Owner, t.Repo)
+				return
+			}
+
+			log.Error("FinishMigrateTask[%d] by DoerID[%d] to RepoID[%d] for OwnerID[%d] failed: %v", t.ID, t.DoerID, t.RepoID, t.OwnerID, err)
+		}
+
+		log.Error("runMigrateTask[%d] by DoerID[%d] to RepoID[%d] for OwnerID[%d] failed: %v", t.ID, t.DoerID, t.RepoID, t.OwnerID, err)
+
+		t.EndTime = timeutil.TimeStampNow()
+		t.Status = structs.TaskStatusFailed
+		t.Message = err.Error()
+		if err := t.UpdateCols(ctx, "status", "message", "end_time"); err != nil {
+			log.Error("Task UpdateCols failed: %v", err)
+		}
+
+		// then, do not delete the repository, otherwise the users won't be able to see the last error
+	}(graceful.GetManager().ShutdownContext()) // even if the parent ctx is canceled, this defer-function still needs to update the task record in database
+
+	if err = t.LoadRepo(ctx); err != nil {
+		return err
+	}
+
+	// if repository is ready, then just finish the task
+	if t.Repo.Status == repo_model.RepositoryReady {
+		return nil
+	}
+
+	if err = t.LoadDoer(ctx); err != nil {
+		return err
+	}
+	if err = t.LoadOwner(ctx); err != nil {
+		return err
+	}
+
+	var opts *migration.MigrateOptions
+	opts, err = t.MigrateConfig()
+	if err != nil {
+		return err
+	}
+
+	opts.MigrateToRepoID = t.RepoID
+
+	pm := process.GetManager()
+	ctx, cancel, finished := pm.AddContext(graceful.GetManager().ShutdownContext(), fmt.Sprintf("MigrateTask: %s/%s", t.Owner.Name, opts.RepoName))
+	defer finished()
+
+	t.StartTime = timeutil.TimeStampNow()
+	t.Status = structs.TaskStatusRunning
+	if err = t.UpdateCols(ctx, "start_time", "status"); err != nil {
+		return err
+	}
+
+	// check whether the task should be canceled, this goroutine is also managed by process manager
+	go func() {
+		for {
+			select {
+			case <-time.After(2 * time.Second):
+			case <-ctx.Done():
+				return
+			}
+			task, _ := admin_model.GetMigratingTask(ctx, t.RepoID)
+			if task != nil && task.Status != structs.TaskStatusRunning {
+				log.Debug("MigrateTask[%d] by DoerID[%d] to RepoID[%d] for OwnerID[%d] is canceled due to status is not 'running'", t.ID, t.DoerID, t.RepoID, t.OwnerID)
+				cancel()
+				return
+			}
+		}
+	}()
+
+	t.Repo, err = migrations.MigrateRepository(ctx, t.Doer, t.Owner.Name, *opts, func(format string, args ...any) {
+		message := admin_model.TranslatableMessage{
+			Format: format,
+			Args:   args,
+		}
+		bs, _ := json.Marshal(message)
+		t.Message = string(bs)
+		_ = t.UpdateCols(ctx, "message")
+	})
+
+	if err == nil {
+		log.Trace("Repository migrated [%d]: %s/%s", t.Repo.ID, t.Owner.Name, t.Repo.Name)
+		return nil
+	}
+
+	if repo_model.IsErrRepoAlreadyExist(err) {
+		return errors.New("the repository name is already used")
+	}
+
+	// remoteAddr may contain credentials, so we sanitize it
+	err = util.SanitizeErrorCredentialURLs(err)
+	if strings.Contains(err.Error(), "Authentication failed") ||
+		strings.Contains(err.Error(), "could not read Username") {
+		return fmt.Errorf("authentication failed: %w", err)
+	} else if strings.Contains(err.Error(), "fatal:") {
+		return fmt.Errorf("migration failed: %w", err)
+	}
+
+	// do not be tempted to coalesce this line with the return
+	err = handleCreateError(t.Owner, err)
+	return err
+}