Move migrating repository from frontend to backend (#6200)

* move migrating to backend * add loading image when migrating and fix tests * fix format * fix lint * add redis task queue support and improve docs * add redis vendor * fix vet * add database migrations and fix app.ini sample * add comments for task section on app.ini.sample * Update models/migrations/v84.go Co-Authored-By: lunny <xiaolunwen@gmail.com> * Update models/repo.go Co-Authored-By: lunny <xiaolunwen@gmail.com> * move migrating to backend * add loading image when migrating and fix tests * fix fmt * add redis task queue support and improve docs * fix fixtures * fix fixtures * fix duplicate function on index.js * fix tests * rename repository statuses * check if repository is being create when SSH request * fix lint * fix template * some improvements * fix template * unified migrate options * fix lint * fix loading page * refactor * When gitea restart, don't restart the running tasks because we may have servel gitea instances, that may break the migration * fix js * Update models/repo.go Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com> * Update docs/content/doc/advanced/config-cheat-sheet.en-us.md Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com> * fix tests * rename ErrTaskIsNotExist to ErrTaskDoesNotExist * delete release after add one on tests to make it run happy * fix tests * fix tests * improve codes * fix lint * fix lint * fix migrations
2024-12-25 01:10:37 +00:00 · 2019-10-13 21:23:14 +08:00 · 2019-10-13 21:23:14 +08:00 · f2a3abc683
commit f2a3abc683
parent 0a96e59884
37 changed files with 1192 additions and 222 deletions
--- a/.gitignore
+++ b/.gitignore
@ -77,3 +77,4 @@ prime/
 *.snap
 *.snap-build
 *_source.tar.bz2
+.DS_Store
--- a/custom/conf/app.ini.sample
+++ b/custom/conf/app.ini.sample
@ -808,3 +808,12 @@ IS_INPUT_FILE = false
 ENABLED = false
 ; If you want to add authorization, specify a token here
 TOKEN =
+
+[task]
+; Task queue type, could be `channel` or `redis`.
+QUEUE_TYPE = channel
+; Task queue length, available only when `QUEUE_TYPE` is `channel`.
+QUEUE_LENGTH = 1000
+; Task queue connction string, available only when `QUEUE_TYPE` is `redis`. 
+; If there is a password of redis, use `addrs=127.0.0.1:6379 password=123 db=0`.
+QUEUE_CONN_STR = "addrs=127.0.0.1:6379 db=0"
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@ -514,9 +514,16 @@ Two special environment variables are passed to the render command:
 - `GITEA_PREFIX_RAW`, which contains the current URL prefix in the `raw` path tree. To be used as prefix for image paths.

 ## Time (`time`)
+
 - `FORMAT`: Time format to diplay on UI. i.e. RFC1123 or 2006-01-02 15:04:05
 - `DEFAULT_UI_LOCATION`: Default location of time on the UI, so that we can display correct user's time on UI. i.e. Shanghai/Asia

+## Task (`task`)
+
+- `QUEUE_TYPE`: **channel**: Task queue type, could be `channel` or `redis`.
+- `QUEUE_LENGTH`: **1000**: Task queue length, available only when `QUEUE_TYPE` is `channel`.
+- `QUEUE_CONN_STR`: **addrs=127.0.0.1:6379 db=0**: Task queue connection string, available only when `QUEUE_TYPE` is `redis`. If there redis needs a password, use `addrs=127.0.0.1:6379 password=123 db=0`.
+
 ## Other (`other`)

 - `SHOW_FOOTER_BRANDING`: **false**: Show Gitea branding in the footer.
--- a/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
@ -241,9 +241,16 @@ IS_INPUT_FILE = false
 - IS_INPUT_FILE: 输入方式是最后一个参数为文件路径还是从标准输入读取。

 ## Time (`time`)
+
 - `FORMAT`: 显示在界面上的时间格式。比如： RFC1123 或者 2006-01-02 15:04:05
 - `DEFAULT_UI_LOCATION`: 默认显示在界面上的时区，默认为本地时区。比如： Asia/Shanghai

+## Task (`task`)
+
+- `QUEUE_TYPE`: **channel**: 任务队列类型，可以为 `channel` 或 `redis`。
+- `QUEUE_LENGTH`: **1000**: 任务队列长度，当 `QUEUE_TYPE` 为 `channel` 时有效。
+- `QUEUE_CONN_STR`: **addrs=127.0.0.1:6379 db=0**: 任务队列连接字符串，当 `QUEUE_TYPE` 为 `redis` 时有效。如果redis有密码，则可以 `addrs=127.0.0.1:6379 password=123 db=0`。
+
 ## Other (`other`)

 - `SHOW_FOOTER_BRANDING`: 为真则在页面底部显示Gitea的字样。
--- a/models/fixtures/repository.yml
+++ b/models/fixtures/repository.yml
@ -11,6 +11,7 @@
  num_milestones: 3
  num_closed_milestones: 1
  num_watches: 3
+  status: 0

 -
  id: 2
@ -24,6 +25,7 @@
  num_closed_pulls: 0
  num_stars: 1
  close_issues_via_commit_in_any_branch: true
+  status: 0

 -
  id: 3
@ -36,6 +38,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  num_watches: 0
+  status: 0

 -
  id: 4
@ -48,6 +51,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  num_stars: 1
+  status: 0

 -
  id: 5
@ -61,6 +65,7 @@
  num_closed_pulls: 0
  num_watches: 0
  is_mirror: true
+  status: 0

 -
  id: 6
@ -73,6 +78,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 7
@ -85,6 +91,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 8
@ -97,6 +104,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 9
@ -109,6 +117,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 10
@ -122,6 +131,7 @@
  num_closed_pulls: 0
  is_mirror: false
  num_forks: 1
+  status: 0

 -
  id: 11
@ -135,6 +145,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 12
@ -147,6 +158,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 13
@ -159,6 +171,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 14
@ -172,6 +185,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  is_mirror: false
+  status: 0

 -
  id: 15
@ -179,6 +193,7 @@
  lower_name: repo15
  name: repo15
  is_empty: true
+  status: 0

 -
  id: 16
@ -191,6 +206,7 @@
  num_pulls: 0
  num_closed_pulls: 0
  num_watches: 0
+  status: 0

 -
  id: 17
@ -205,6 +221,7 @@
  num_watches: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 18
@ -218,6 +235,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 19
@ -231,6 +249,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 20
@ -244,6 +263,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 21
@ -257,6 +277,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 22
@ -270,6 +291,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 23
@ -283,6 +305,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 24
@ -296,6 +319,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: false
+  status: 0

 -
  id: 25
@ -310,6 +334,7 @@
  num_watches: 0
  is_mirror: true
  is_fork: false
+  status: 0

 -
  id: 26
@ -324,6 +349,7 @@
  num_watches: 0
  is_mirror: true
  is_fork: false
+  status: 0

 -
  id: 27
@ -339,6 +365,7 @@
  is_mirror: true
  num_forks: 1
  is_fork: false
+  status: 0

 -
  id: 28
@ -354,6 +381,7 @@
  is_mirror: true
  num_forks: 1
  is_fork: false
+  status: 0

 -
  id: 29
@ -368,6 +396,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: true
+  status: 0

 -
  id: 30
@ -382,6 +411,7 @@
  num_closed_pulls: 0
  is_mirror: false
  is_fork: true
+  status: 0

 -
  id: 31
@ -392,6 +422,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 32 # org public repo
@ -403,6 +434,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 33
@ -410,6 +442,7 @@
  lower_name: utf8
  name: utf8
  is_private: false
+  status: 0

 -
  id: 34
@ -421,6 +454,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 35
@ -432,6 +466,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 36
@ -443,6 +478,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 37
@ -454,6 +490,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 38
@ -465,6 +502,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 39
@ -476,6 +514,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 40
@ -487,6 +526,7 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0

 -
  id: 41
@ -520,3 +560,4 @@
  num_forks: 0
  num_issues: 0
  is_mirror: false
+  status: 0
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@ -252,6 +252,8 @@ var migrations = []Migration{
 	NewMigration("add repo_admin_change_team_access to user", addRepoAdminChangeTeamAccessColumnForUser),
 	// v98 -> v99
 	NewMigration("add original author name and id on migrated release", addOriginalAuthorOnMigratedReleases),
+	// v99 -> v100
+	NewMigration("add task table and status column for repository table", addTaskTable),
 }

 // Migrate database to current version
--- a/models/migrations/v99.go
+++ b/models/migrations/v99.go
@ -0,0 +1,34 @@
+// 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 migrations
+
+import (
+	"code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"github.com/go-xorm/xorm"
+)
+
+func addTaskTable(x *xorm.Engine) error {
+	type Task struct {
+		ID             int64
+		DoerID         int64 `xorm:"index"` // operator
+		OwnerID        int64 `xorm:"index"` // repo owner id, when creating, the repoID maybe zero
+		RepoID         int64 `xorm:"index"`
+		Type           structs.TaskType
+		Status         structs.TaskStatus `xorm:"index"`
+		StartTime      timeutil.TimeStamp
+		EndTime        timeutil.TimeStamp
+		PayloadContent string             `xorm:"TEXT"`
+		Errors         string             `xorm:"TEXT"` // if task failed, saved the error reason
+		Created        timeutil.TimeStamp `xorm:"created"`
+	}
+
+	type Repository struct {
+		Status int `xorm:"NOT NULL DEFAULT 0"`
+	}
+
+	return x.Sync2(new(Task), new(Repository))
+}
--- a/models/models.go
+++ b/models/models.go
@ -112,6 +112,7 @@ func init() {
 		new(OAuth2Application),
 		new(OAuth2AuthorizationCode),
 		new(OAuth2Grant),
+		new(Task),
 	)

 	gonicNames := []string{"SSL", "UID"}
--- a/models/repo.go
+++ b/models/repo.go
@ -126,6 +126,15 @@ func NewRepoContext() {
 	RemoveAllWithNotice("Clean up repository temporary data", filepath.Join(setting.AppDataPath, "tmp"))
 }

+// RepositoryStatus defines the status of repository
+type RepositoryStatus int
+
+// all kinds of RepositoryStatus
+const (
+	RepositoryReady         RepositoryStatus = iota // a normal repository
+	RepositoryBeingMigrated                         // repository is migrating
+)
+
 // Repository represents a git repository.
 type Repository struct {
 	ID            int64  `xorm:"pk autoincr"`
@ -156,9 +165,9 @@ type Repository struct {
 	IsPrivate  bool `xorm:"INDEX"`
 	IsEmpty    bool `xorm:"INDEX"`
 	IsArchived bool `xorm:"INDEX"`
-
 	IsMirror   bool `xorm:"INDEX"`
 	*Mirror    `xorm:"-"`
+	Status     RepositoryStatus `xorm:"NOT NULL DEFAULT 0"`

 	ExternalMetas map[string]string `xorm:"-"`
 	Units         []*RepoUnit       `xorm:"-"`
@ -197,6 +206,16 @@ func (repo *Repository) ColorFormat(s fmt.State) {
 		repo.Name)
 }

+// IsBeingMigrated indicates that repository is being migtated
+func (repo *Repository) IsBeingMigrated() bool {
+	return repo.Status == RepositoryBeingMigrated
+}
+
+// IsBeingCreated indicates that repository is being migrated or forked
+func (repo *Repository) IsBeingCreated() bool {
+	return repo.IsBeingMigrated()
+}
+
 // AfterLoad is invoked from XORM after setting the values of all fields of this object.
 func (repo *Repository) AfterLoad() {
 	// FIXME: use models migration to solve all at once.
@ -884,18 +903,6 @@ func (repo *Repository) CloneLink() (cl *CloneLink) {
 	return repo.cloneLink(x, false)
 }

-// MigrateRepoOptions contains the repository migrate options
-type MigrateRepoOptions struct {
-	Name                 string
-	Description          string
-	OriginalURL          string
-	IsPrivate            bool
-	IsMirror             bool
-	RemoteAddr           string
-	Wiki                 bool // include wiki repository
-	SyncReleasesWithTags bool // sync releases from tags
-}
-
 /*
 	GitHub, GitLab, Gogs: *.wiki.git
 	BitBucket: *.git/wiki
@ -915,20 +922,28 @@ func wikiRemoteURL(remote string) string {
 	return ""
 }

-// MigrateRepository migrates an existing repository from other project hosting.
-func MigrateRepository(doer, u *User, opts MigrateRepoOptions) (*Repository, error) {
-	repo, err := CreateRepository(doer, u, CreateRepoOptions{
-		Name:        opts.Name,
-		Description: opts.Description,
-		OriginalURL: opts.OriginalURL,
-		IsPrivate:   opts.IsPrivate,
-		IsMirror:    opts.IsMirror,
-	})
-	if err != nil {
-		return nil, err
+// CheckCreateRepository check if could created a repository
+func CheckCreateRepository(doer, u *User, name string) error {
+	if !doer.CanCreateRepo() {
+		return ErrReachLimitOfRepo{u.MaxRepoCreation}
 	}

-	repoPath := RepoPath(u.Name, opts.Name)
+	if err := IsUsableRepoName(name); err != nil {
+		return err
+	}
+
+	has, err := isRepositoryExist(x, u, name)
+	if err != nil {
+		return fmt.Errorf("IsRepositoryExist: %v", err)
+	} else if has {
+		return ErrRepoAlreadyExist{u.Name, name}
+	}
+	return nil
+}
+
+// MigrateRepositoryGitData starts migrating git related data after created migrating repository
+func MigrateRepositoryGitData(doer, u *User, repo *Repository, opts api.MigrateRepoOption) (*Repository, error) {
+	repoPath := RepoPath(u.Name, opts.RepoName)

 	if u.IsOrganization() {
 		t, err := u.GetOwnerTeam()
@ -942,11 +957,12 @@ func MigrateRepository(doer, u *User, opts MigrateRepoOptions) (*Repository, err

 	migrateTimeout := time.Duration(setting.Git.Timeout.Migrate) * time.Second

-	if err := os.RemoveAll(repoPath); err != nil {
+	var err error
+	if err = os.RemoveAll(repoPath); err != nil {
 		return repo, fmt.Errorf("Failed to remove %s: %v", repoPath, err)
 	}

-	if err = git.Clone(opts.RemoteAddr, repoPath, git.CloneRepoOptions{
+	if err = git.Clone(opts.CloneAddr, repoPath, git.CloneRepoOptions{
 		Mirror:  true,
 		Quiet:   true,
 		Timeout: migrateTimeout,
@ -955,8 +971,8 @@ func MigrateRepository(doer, u *User, opts MigrateRepoOptions) (*Repository, err
 	}

 	if opts.Wiki {
-		wikiPath := WikiPath(u.Name, opts.Name)
-		wikiRemotePath := wikiRemoteURL(opts.RemoteAddr)
+		wikiPath := WikiPath(u.Name, opts.RepoName)
+		wikiRemotePath := wikiRemoteURL(opts.CloneAddr)
 		if len(wikiRemotePath) > 0 {
 			if err := os.RemoveAll(wikiPath); err != nil {
 				return repo, fmt.Errorf("Failed to remove %s: %v", wikiPath, err)
@ -986,7 +1002,7 @@ func MigrateRepository(doer, u *User, opts MigrateRepoOptions) (*Repository, err
 		return repo, fmt.Errorf("git.IsEmpty: %v", err)
 	}

-	if opts.SyncReleasesWithTags && !repo.IsEmpty {
+	if !opts.Releases && !repo.IsEmpty {
 		// Try to get HEAD branch and set it as default branch.
 		headBranch, err := gitRepo.GetHEADBranch()
 		if err != nil {
@ -1005,7 +1021,7 @@ func MigrateRepository(doer, u *User, opts MigrateRepoOptions) (*Repository, err
 		log.Error("Failed to update size for repository: %v", err)
 	}

-	if opts.IsMirror {
+	if opts.Mirror {
 		if _, err = x.InsertOne(&Mirror{
 			RepoID:         repo.ID,
 			Interval:       setting.Mirror.DefaultInterval,
@ -1143,6 +1159,7 @@ type CreateRepoOptions struct {
 	IsPrivate   bool
 	IsMirror    bool
 	AutoInit    bool
+	Status      RepositoryStatus
 }

 func getRepoInitFile(tp, name string) ([]byte, error) {
@ -1410,6 +1427,7 @@ func CreateRepository(doer, u *User, opts CreateRepoOptions) (_ *Repository, err
 		IsPrivate:                       opts.IsPrivate,
 		IsFsckEnabled:                   !opts.IsMirror,
 		CloseIssuesViaCommitInAnyBranch: setting.Repository.DefaultCloseIssuesViaCommitsInAnyBranch,
+		Status:                          opts.Status,
 	}

 	sess := x.NewSession()
@ -1856,6 +1874,7 @@ func DeleteRepository(doer *User, uid, repoID int64) error {
 		&CommitStatus{RepoID: repoID},
 		&RepoIndexerStatus{RepoID: repoID},
 		&Comment{RefRepoID: repoID},
+		&Task{RepoID: repoID},
 	); err != nil {
 		return fmt.Errorf("deleteBeans: %v", err)
 	}
--- a/models/task.go
+++ b/models/task.go
@ -0,0 +1,240 @@
+// Copyright 2019 Gitea. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package models
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/migrations/base"
+	"code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"xorm.io/builder"
+)
+
+// Task represents a task
+type Task struct {
+	ID             int64
+	DoerID         int64       `xorm:"index"` // operator
+	Doer           *User       `xorm:"-"`
+	OwnerID        int64       `xorm:"index"` // repo owner id, when creating, the repoID maybe zero
+	Owner          *User       `xorm:"-"`
+	RepoID         int64       `xorm:"index"`
+	Repo           *Repository `xorm:"-"`
+	Type           structs.TaskType
+	Status         structs.TaskStatus `xorm:"index"`
+	StartTime      timeutil.TimeStamp
+	EndTime        timeutil.TimeStamp
+	PayloadContent string             `xorm:"TEXT"`
+	Errors         string             `xorm:"TEXT"` // if task failed, saved the error reason
+	Created        timeutil.TimeStamp `xorm:"created"`
+}
+
+// LoadRepo loads repository of the task
+func (task *Task) LoadRepo() error {
+	return task.loadRepo(x)
+}
+
+func (task *Task) loadRepo(e Engine) error {
+	if task.Repo != nil {
+		return nil
+	}
+	var repo Repository
+	has, err := e.ID(task.RepoID).Get(&repo)
+	if err != nil {
+		return err
+	} else if !has {
+		return ErrRepoNotExist{
+			ID: task.RepoID,
+		}
+	}
+	task.Repo = &repo
+	return nil
+}
+
+// LoadDoer loads do user
+func (task *Task) LoadDoer() error {
+	if task.Doer != nil {
+		return nil
+	}
+
+	var doer User
+	has, err := x.ID(task.DoerID).Get(&doer)
+	if err != nil {
+		return err
+	} else if !has {
+		return ErrUserNotExist{
+			UID: task.DoerID,
+		}
+	}
+	task.Doer = &doer
+
+	return nil
+}
+
+// LoadOwner loads owner user
+func (task *Task) LoadOwner() error {
+	if task.Owner != nil {
+		return nil
+	}
+
+	var owner User
+	has, err := x.ID(task.OwnerID).Get(&owner)
+	if err != nil {
+		return err
+	} else if !has {
+		return ErrUserNotExist{
+			UID: task.OwnerID,
+		}
+	}
+	task.Owner = &owner
+
+	return nil
+}
+
+// UpdateCols updates some columns
+func (task *Task) UpdateCols(cols ...string) error {
+	_, err := x.ID(task.ID).Cols(cols...).Update(task)
+	return err
+}
+
+// MigrateConfig returns task config when migrate repository
+func (task *Task) MigrateConfig() (*structs.MigrateRepoOption, error) {
+	if task.Type == structs.TaskTypeMigrateRepo {
+		var opts structs.MigrateRepoOption
+		err := json.Unmarshal([]byte(task.PayloadContent), &opts)
+		if err != nil {
+			return nil, err
+		}
+		return &opts, nil
+	}
+	return nil, fmt.Errorf("Task type is %s, not Migrate Repo", task.Type.Name())
+}
+
+// ErrTaskDoesNotExist represents a "TaskDoesNotExist" kind of error.
+type ErrTaskDoesNotExist struct {
+	ID     int64
+	RepoID int64
+	Type   structs.TaskType
+}
+
+// IsErrTaskDoesNotExist checks if an error is a ErrTaskIsNotExist.
+func IsErrTaskDoesNotExist(err error) bool {
+	_, ok := err.(ErrTaskDoesNotExist)
+	return ok
+}
+
+func (err ErrTaskDoesNotExist) Error() string {
+	return fmt.Sprintf("task is not exist [id: %d, repo_id: %d, type: %d]",
+		err.ID, err.RepoID, err.Type)
+}
+
+// GetMigratingTask returns the migrating task by repo's id
+func GetMigratingTask(repoID int64) (*Task, error) {
+	var task = Task{
+		RepoID: repoID,
+		Type:   structs.TaskTypeMigrateRepo,
+	}
+	has, err := x.Get(&task)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrTaskDoesNotExist{0, repoID, task.Type}
+	}
+	return &task, nil
+}
+
+// FindTaskOptions find all tasks
+type FindTaskOptions struct {
+	Status int
+}
+
+// ToConds generates conditions for database operation.
+func (opts FindTaskOptions) ToConds() builder.Cond {
+	var cond = builder.NewCond()
+	if opts.Status >= 0 {
+		cond = cond.And(builder.Eq{"status": opts.Status})
+	}
+	return cond
+}
+
+// FindTasks find all tasks
+func FindTasks(opts FindTaskOptions) ([]*Task, error) {
+	var tasks = make([]*Task, 0, 10)
+	err := x.Where(opts.ToConds()).Find(&tasks)
+	return tasks, err
+}
+
+func createTask(e Engine, task *Task) error {
+	_, err := e.Insert(task)
+	return err
+}
+
+// CreateMigrateTask creates a migrate task
+func CreateMigrateTask(doer, u *User, opts base.MigrateOptions) (*Task, error) {
+	bs, err := json.Marshal(&opts)
+	if err != nil {
+		return nil, err
+	}
+
+	var task = Task{
+		DoerID:         doer.ID,
+		OwnerID:        u.ID,
+		Type:           structs.TaskTypeMigrateRepo,
+		Status:         structs.TaskStatusQueue,
+		PayloadContent: string(bs),
+	}
+
+	if err := createTask(x, &task); err != nil {
+		return nil, err
+	}
+
+	repo, err := CreateRepository(doer, u, CreateRepoOptions{
+		Name:        opts.RepoName,
+		Description: opts.Description,
+		OriginalURL: opts.CloneAddr,
+		IsPrivate:   opts.Private,
+		IsMirror:    opts.Mirror,
+		Status:      RepositoryBeingMigrated,
+	})
+	if err != nil {
+		task.EndTime = timeutil.TimeStampNow()
+		task.Status = structs.TaskStatusFailed
+		err2 := task.UpdateCols("end_time", "status")
+		if err2 != nil {
+			log.Error("UpdateCols Failed: %v", err2.Error())
+		}
+		return nil, err
+	}
+
+	task.RepoID = repo.ID
+	if err = task.UpdateCols("repo_id"); err != nil {
+		return nil, err
+	}
+
+	return &task, nil
+}
+
+// FinishMigrateTask updates database when migrate task finished
+func FinishMigrateTask(task *Task) error {
+	task.Status = structs.TaskStatusFinished
+	task.EndTime = timeutil.TimeStampNow()
+	sess := x.NewSession()
+	defer sess.Close()
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+	if _, err := sess.ID(task.ID).Cols("status", "end_time").Update(task); err != nil {
+		return err
+	}
+	task.Repo.Status = RepositoryReady
+	if _, err := sess.ID(task.RepoID).Cols("status").Update(task.Repo); err != nil {
+		return err
+	}
+
+	return sess.Commit()
+}
--- a/modules/context/repo.go
+++ b/modules/context/repo.go
@ -146,6 +146,9 @@ func (r *Repository) FileExists(path string, branch string) (bool, error) {
 // GetEditorconfig returns the .editorconfig definition if found in the
 // HEAD of the default repo branch.
 func (r *Repository) GetEditorconfig() (*editorconfig.Editorconfig, error) {
+	if r.GitRepo == nil {
+		return nil, nil
+	}
 	commit, err := r.GitRepo.GetBranchCommit(r.Repository.DefaultBranch)
 	if err != nil {
 		return nil, err
@ -358,12 +361,6 @@ func RepoAssignment() macaron.Handler {
 			return
 		}

-		gitRepo, err := git.OpenRepository(models.RepoPath(userName, repoName))
-		if err != nil {
-			ctx.ServerError("RepoAssignment Invalid repo "+models.RepoPath(userName, repoName), err)
-			return
-		}
-		ctx.Repo.GitRepo = gitRepo
 		ctx.Repo.RepoLink = repo.Link()
 		ctx.Data["RepoLink"] = ctx.Repo.RepoLink
 		ctx.Data["RepoRelPath"] = ctx.Repo.Owner.Name + "/" + ctx.Repo.Repository.Name
@ -373,13 +370,6 @@ func RepoAssignment() macaron.Handler {
 			ctx.Data["RepoExternalIssuesLink"] = unit.ExternalTrackerConfig().ExternalTrackerURL
 		}

-		tags, err := ctx.Repo.GitRepo.GetTags()
-		if err != nil {
-			ctx.ServerError("GetTags", err)
-			return
-		}
-		ctx.Data["Tags"] = tags
-
 		count, err := models.GetReleaseCountByRepoID(ctx.Repo.Repository.ID, models.FindReleasesOptions{
 			IncludeDrafts: false,
 			IncludeTags:   true,
@ -425,12 +415,25 @@ func RepoAssignment() macaron.Handler {
 		}

 		// repo is empty and display enable
-		if ctx.Repo.Repository.IsEmpty {
+		if ctx.Repo.Repository.IsEmpty || ctx.Repo.Repository.IsBeingCreated() {
 			ctx.Data["BranchName"] = ctx.Repo.Repository.DefaultBranch
 			return
 		}

-		ctx.Data["TagName"] = ctx.Repo.TagName
+		gitRepo, err := git.OpenRepository(models.RepoPath(userName, repoName))
+		if err != nil {
+			ctx.ServerError("RepoAssignment Invalid repo "+models.RepoPath(userName, repoName), err)
+			return
+		}
+		ctx.Repo.GitRepo = gitRepo
+
+		tags, err := ctx.Repo.GitRepo.GetTags()
+		if err != nil {
+			ctx.ServerError("GetTags", err)
+			return
+		}
+		ctx.Data["Tags"] = tags
+
 		brs, err := ctx.Repo.GitRepo.GetBranches()
 		if err != nil {
 			ctx.ServerError("GetBranches", err)
@ -439,6 +442,8 @@ func RepoAssignment() macaron.Handler {
 		ctx.Data["Branches"] = brs
 		ctx.Data["BranchesCount"] = len(brs)

+		ctx.Data["TagName"] = ctx.Repo.TagName
+
 		// If not branch selected, try default one.
 		// If default branch doesn't exists, fall back to some other branch.
 		if len(ctx.Repo.BranchName) == 0 {
--- a/modules/migrations/base/options.go
+++ b/modules/migrations/base/options.go
@ -5,22 +5,7 @@

 package base

-// MigrateOptions defines the way a repository gets migrated
-type MigrateOptions struct {
-	RemoteURL    string
-	AuthUsername string
-	AuthPassword string
-	Name         string
-	Description  string
-	OriginalURL  string
+import "code.gitea.io/gitea/modules/structs"

-	Wiki         bool
-	Issues       bool
-	Milestones   bool
-	Labels       bool
-	Releases     bool
-	Comments     bool
-	PullRequests bool
-	Private      bool
-	Mirror       bool
-}
+// MigrateOptions defines the way a repository gets migrated
+type MigrateOptions = structs.MigrateRepoOption
--- a/modules/migrations/gitea.go
+++ b/modules/migrations/gitea.go
@ -22,6 +22,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/migrations/base"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"

 	gouuid "github.com/satori/go.uuid"
@ -90,16 +91,33 @@ func (g *GiteaLocalUploader) CreateRepo(repo *base.Repository, opts base.Migrate
 		remoteAddr = u.String()
 	}

-	r, err := models.MigrateRepository(g.doer, owner, models.MigrateRepoOptions{
+	var r *models.Repository
+	if opts.MigrateToRepoID <= 0 {
+		r, err = models.CreateRepository(g.doer, owner, models.CreateRepoOptions{
 			Name:        g.repoName,
 			Description: repo.Description,
 			OriginalURL: repo.OriginalURL,
-		IsMirror:             repo.IsMirror,
-		RemoteAddr:           remoteAddr,
-		IsPrivate:            repo.IsPrivate,
-		Wiki:                 opts.Wiki,
-		SyncReleasesWithTags: !opts.Releases, // if didn't get releases, then sync them from tags
+			IsPrivate:   opts.Private,
+			IsMirror:    opts.Mirror,
+			Status:      models.RepositoryBeingMigrated,
 		})
+	} else {
+		r, err = models.GetRepositoryByID(opts.MigrateToRepoID)
+	}
+	if err != nil {
+		return err
+	}
+
+	r, err = models.MigrateRepositoryGitData(g.doer, owner, r, structs.MigrateRepoOption{
+		RepoName:    g.repoName,
+		Description: repo.Description,
+		Mirror:      repo.IsMirror,
+		CloneAddr:   remoteAddr,
+		Private:     repo.IsPrivate,
+		Wiki:        opts.Wiki,
+		Releases:    opts.Releases, // if didn't get releases, then sync them from tags
+	})
+
 	g.repo = r
 	if err != nil {
 		return err
--- a/modules/migrations/gitea_test.go
+++ b/modules/migrations/gitea_test.go
@ -10,6 +10,7 @@ import (
 	"time"

 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/util"

 	"github.com/stretchr/testify/assert"
@ -29,9 +30,9 @@ func TestGiteaUploadRepo(t *testing.T) {
 		uploader   = NewGiteaLocalUploader(user, user.Name, repoName)
 	)

-	err := migrateRepository(downloader, uploader, MigrateOptions{
-		RemoteURL:    "https://github.com/go-xorm/builder",
-		Name:         repoName,
+	err := migrateRepository(downloader, uploader, structs.MigrateRepoOption{
+		CloneAddr:    "https://github.com/go-xorm/builder",
+		RepoName:     repoName,
 		AuthUsername: "",

 		Wiki:         true,
--- a/modules/migrations/github.go
+++ b/modules/migrations/github.go
@ -34,7 +34,7 @@ type GithubDownloaderV3Factory struct {

 // Match returns ture if the migration remote URL matched this downloader factory
 func (f *GithubDownloaderV3Factory) Match(opts base.MigrateOptions) (bool, error) {
-	u, err := url.Parse(opts.RemoteURL)
+	u, err := url.Parse(opts.CloneAddr)
 	if err != nil {
 		return false, err
 	}
@ -44,7 +44,7 @@ func (f *GithubDownloaderV3Factory) Match(opts base.MigrateOptions) (bool, error

 // New returns a Downloader related to this factory according MigrateOptions
 func (f *GithubDownloaderV3Factory) New(opts base.MigrateOptions) (base.Downloader, error) {
-	u, err := url.Parse(opts.RemoteURL)
+	u, err := url.Parse(opts.CloneAddr)
 	if err != nil {
 		return nil, err
 	}
--- a/modules/migrations/migrate.go
+++ b/modules/migrations/migrate.go
@ -6,6 +6,8 @@
 package migrations

 import (
+	"fmt"
+
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/migrations/base"
@ -27,7 +29,7 @@ func RegisterDownloaderFactory(factory base.DownloaderFactory) {
 func MigrateRepository(doer *models.User, ownerName string, opts base.MigrateOptions) (*models.Repository, error) {
 	var (
 		downloader base.Downloader
-		uploader   = NewGiteaLocalUploader(doer, ownerName, opts.Name)
+		uploader   = NewGiteaLocalUploader(doer, ownerName, opts.RepoName)
 	)

 	for _, factory := range factories {
@ -50,14 +52,18 @@ func MigrateRepository(doer *models.User, ownerName string, opts base.MigrateOpt
 		opts.Comments = false
 		opts.Issues = false
 		opts.PullRequests = false
-		downloader = NewPlainGitDownloader(ownerName, opts.Name, opts.RemoteURL)
-		log.Trace("Will migrate from git: %s", opts.RemoteURL)
+		downloader = NewPlainGitDownloader(ownerName, opts.RepoName, opts.CloneAddr)
+		log.Trace("Will migrate from git: %s", opts.CloneAddr)
 	}

 	if err := migrateRepository(downloader, uploader, opts); err != nil {
 		if err1 := uploader.Rollback(); err1 != nil {
 			log.Error("rollback failed: %v", err1)
 		}
+
+		if err2 := models.CreateRepositoryNotice(fmt.Sprintf("Migrate repository from %s failed: %v", opts.CloneAddr, err)); err2 != nil {
+			log.Error("create respotiry notice failed: ", err2)
+		}
 		return nil, err
 	}

--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@ -1043,4 +1043,5 @@ func NewServices() {
 	newNotifyMailService()
 	newWebhookService()
 	newIndexerService()
+	newTaskService()
 }
--- a/modules/setting/task.go
+++ b/modules/setting/task.go
@ -0,0 +1,25 @@
+// 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 setting
+
+var (
+	// Task settings
+	Task = struct {
+		QueueType    string
+		QueueLength  int
+		QueueConnStr string
+	}{
+		QueueType:    ChannelQueueType,
+		QueueLength:  1000,
+		QueueConnStr: "addrs=127.0.0.1:6379 db=0",
+	}
+)
+
+func newTaskService() {
+	sec := Cfg.Section("task")
+	Task.QueueType = sec.Key("QUEUE_TYPE").MustString(ChannelQueueType)
+	Task.QueueLength = sec.Key("QUEUE_LENGTH").MustInt(1000)
+	Task.QueueConnStr = sec.Key("QUEUE_CONN_STR").MustString("addrs=127.0.0.1:6379 db=0")
+}
--- a/modules/structs/repo.go
+++ b/modules/structs/repo.go
@ -166,4 +166,12 @@ type MigrateRepoOption struct {
 	Mirror          bool   `json:"mirror"`
 	Private         bool   `json:"private"`
 	Description     string `json:"description"`
+	Wiki            bool
+	Issues          bool
+	Milestones      bool
+	Labels          bool
+	Releases        bool
+	Comments        bool
+	PullRequests    bool
+	MigrateToRepoID int64
 }
--- a/modules/structs/task.go
+++ b/modules/structs/task.go
@ -0,0 +1,34 @@
+// Copyright 2019 Gitea. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package structs
+
+// TaskType defines task type
+type TaskType int
+
+// all kinds of task types
+const (
+	TaskTypeMigrateRepo TaskType = iota // migrate repository from external or local disk
+)
+
+// Name returns the task type name
+func (taskType TaskType) Name() string {
+	switch taskType {
+	case TaskTypeMigrateRepo:
+		return "Migrate Repository"
+	}
+	return ""
+}
+
+// TaskStatus defines task status
+type TaskStatus int
+
+// enumerate all the kinds of task status
+const (
+	TaskStatusQueue    TaskStatus = iota // 0 task is queue
+	TaskStatusRunning                    // 1 task is running
+	TaskStatusStopped                    // 2 task is stopped
+	TaskStatusFailed                     // 3 task is failed
+	TaskStatusFinished                   // 4 task is finished
+)
--- a/modules/task/migrate.go
+++ b/modules/task/migrate.go
@ -0,0 +1,120 @@
+// Copyright 2019 Gitea. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package task
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/migrations"
+	"code.gitea.io/gitea/modules/notification"
+	"code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
+)
+
+func handleCreateError(owner *models.User, err error, name string) error {
+	switch {
+	case models.IsErrReachLimitOfRepo(err):
+		return fmt.Errorf("You have already reached your limit of %d repositories", owner.MaxCreationLimit())
+	case models.IsErrRepoAlreadyExist(err):
+		return errors.New("The repository name is already used")
+	case models.IsErrNameReserved(err):
+		return fmt.Errorf("The repository name '%s' is reserved", err.(models.ErrNameReserved).Name)
+	case models.IsErrNamePatternNotAllowed(err):
+		return fmt.Errorf("The pattern '%s' is not allowed in a repository name", err.(models.ErrNamePatternNotAllowed).Pattern)
+	default:
+		return err
+	}
+}
+
+func runMigrateTask(t *models.Task) (err error) {
+	defer func() {
+		if e := recover(); e != nil {
+			var buf bytes.Buffer
+			fmt.Fprintf(&buf, "Handler crashed with error: %v", log.Stack(2))
+
+			err = errors.New(buf.String())
+		}
+
+		if err == nil {
+			err = models.FinishMigrateTask(t)
+			if err == nil {
+				notification.NotifyMigrateRepository(t.Doer, t.Owner, t.Repo)
+				return
+			}
+
+			log.Error("FinishMigrateTask failed: %s", err.Error())
+		}
+
+		t.EndTime = timeutil.TimeStampNow()
+		t.Status = structs.TaskStatusFailed
+		t.Errors = err.Error()
+		if err := t.UpdateCols("status", "errors", "end_time"); err != nil {
+			log.Error("Task UpdateCols failed: %s", err.Error())
+		}
+
+		if t.Repo != nil {
+			if errDelete := models.DeleteRepository(t.Doer, t.OwnerID, t.Repo.ID); errDelete != nil {
+				log.Error("DeleteRepository: %v", errDelete)
+			}
+		}
+	}()
+
+	if err := t.LoadRepo(); err != nil {
+		return err
+	}
+
+	// if repository is ready, then just finsih the task
+	if t.Repo.Status == models.RepositoryReady {
+		return nil
+	}
+
+	if err := t.LoadDoer(); err != nil {
+		return err
+	}
+	if err := t.LoadOwner(); err != nil {
+		return err
+	}
+	t.StartTime = timeutil.TimeStampNow()
+	t.Status = structs.TaskStatusRunning
+	if err := t.UpdateCols("start_time", "status"); err != nil {
+		return err
+	}
+
+	var opts *structs.MigrateRepoOption
+	opts, err = t.MigrateConfig()
+	if err != nil {
+		return err
+	}
+
+	opts.MigrateToRepoID = t.RepoID
+	repo, err := migrations.MigrateRepository(t.Doer, t.Owner.Name, *opts)
+	if err == nil {
+		notification.NotifyMigrateRepository(t.Doer, t.Owner, repo)
+
+		log.Trace("Repository migrated [%d]: %s/%s", repo.ID, t.Owner.Name, repo.Name)
+		return nil
+	}
+
+	if models.IsErrRepoAlreadyExist(err) {
+		return errors.New("The repository name is already used")
+	}
+
+	// remoteAddr may contain credentials, so we sanitize it
+	err = util.URLSanitizedError(err, opts.CloneAddr)
+	if strings.Contains(err.Error(), "Authentication failed") ||
+		strings.Contains(err.Error(), "could not read Username") {
+		return fmt.Errorf("Authentication failed: %v", err.Error())
+	} else if strings.Contains(err.Error(), "fatal:") {
+		return fmt.Errorf("Migration failed: %v", err.Error())
+	}
+
+	return handleCreateError(t.Owner, err, "MigratePost")
+}
--- a/modules/task/queue.go
+++ b/modules/task/queue.go
@ -0,0 +1,14 @@
+// Copyright 2019 Gitea. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package task
+
+import "code.gitea.io/gitea/models"
+
+// Queue defines an interface to run task queue
+type Queue interface {
+	Run() error
+	Push(*models.Task) error
+	Stop()
+}
--- a/modules/task/queue_channel.go
+++ b/modules/task/queue_channel.go
@ -0,0 +1,48 @@
+// 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 task
+
+import (
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+)
+
+var (
+	_ Queue = &ChannelQueue{}
+)
+
+// ChannelQueue implements
+type ChannelQueue struct {
+	queue chan *models.Task
+}
+
+// NewChannelQueue create a memory channel queue
+func NewChannelQueue(queueLen int) *ChannelQueue {
+	return &ChannelQueue{
+		queue: make(chan *models.Task, queueLen),
+	}
+}
+
+// Run starts to run the queue
+func (c *ChannelQueue) Run() error {
+	for task := range c.queue {
+		err := Run(task)
+		if err != nil {
+			log.Error("Run task failed: %s", err.Error())
+		}
+	}
+	return nil
+}
+
+// Push will push the task ID to queue
+func (c *ChannelQueue) Push(task *models.Task) error {
+	c.queue <- task
+	return nil
+}
+
+// Stop stop the queue
+func (c *ChannelQueue) Stop() {
+	close(c.queue)
+}
--- a/modules/task/queue_redis.go
+++ b/modules/task/queue_redis.go
@ -0,0 +1,130 @@
+// 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 task
+
+import (
+	"encoding/json"
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+
+	"github.com/go-redis/redis"
+)
+
+var (
+	_ Queue = &RedisQueue{}
+)
+
+type redisClient interface {
+	RPush(key string, args ...interface{}) *redis.IntCmd
+	LPop(key string) *redis.StringCmd
+	Ping() *redis.StatusCmd
+}
+
+// RedisQueue redis queue
+type RedisQueue struct {
+	client    redisClient
+	queueName string
+	closeChan chan bool
+}
+
+func parseConnStr(connStr string) (addrs, password string, dbIdx int, err error) {
+	fields := strings.Fields(connStr)
+	for _, f := range fields {
+		items := strings.SplitN(f, "=", 2)
+		if len(items) < 2 {
+			continue
+		}
+		switch strings.ToLower(items[0]) {
+		case "addrs":
+			addrs = items[1]
+		case "password":
+			password = items[1]
+		case "db":
+			dbIdx, err = strconv.Atoi(items[1])
+			if err != nil {
+				return
+			}
+		}
+	}
+	return
+}
+
+// NewRedisQueue creates single redis or cluster redis queue
+func NewRedisQueue(addrs string, password string, dbIdx int) (*RedisQueue, error) {
+	dbs := strings.Split(addrs, ",")
+	var queue = RedisQueue{
+		queueName: "task_queue",
+		closeChan: make(chan bool),
+	}
+	if len(dbs) == 0 {
+		return nil, errors.New("no redis host found")
+	} else if len(dbs) == 1 {
+		queue.client = redis.NewClient(&redis.Options{
+			Addr:     strings.TrimSpace(dbs[0]), // use default Addr
+			Password: password,                  // no password set
+			DB:       dbIdx,                     // use default DB
+		})
+	} else {
+		// cluster will ignore db
+		queue.client = redis.NewClusterClient(&redis.ClusterOptions{
+			Addrs:    dbs,
+			Password: password,
+		})
+	}
+	if err := queue.client.Ping().Err(); err != nil {
+		return nil, err
+	}
+	return &queue, nil
+}
+
+// Run starts to run the queue
+func (r *RedisQueue) Run() error {
+	for {
+		select {
+		case <-r.closeChan:
+			return nil
+		case <-time.After(time.Millisecond * 100):
+		}
+
+		bs, err := r.client.LPop(r.queueName).Bytes()
+		if err != nil {
+			if err != redis.Nil {
+				log.Error("LPop failed: %v", err)
+			}
+			time.Sleep(time.Millisecond * 100)
+			continue
+		}
+
+		var task models.Task
+		err = json.Unmarshal(bs, &task)
+		if err != nil {
+			log.Error("Unmarshal task failed: %s", err.Error())
+		} else {
+			err = Run(&task)
+			if err != nil {
+				log.Error("Run task failed: %s", err.Error())
+			}
+		}
+	}
+}
+
+// Push implements Queue
+func (r *RedisQueue) Push(task *models.Task) error {
+	bs, err := json.Marshal(task)
+	if err != nil {
+		return err
+	}
+	return r.client.RPush(r.queueName, bs).Err()
+}
+
+// Stop stop the queue
+func (r *RedisQueue) Stop() {
+	r.closeChan <- true
+}
--- a/modules/task/task.go
+++ b/modules/task/task.go
@ -0,0 +1,66 @@
+// Copyright 2019 Gitea. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package task
+
+import (
+	"fmt"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/migrations/base"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/structs"
+)
+
+// taskQueue is a global queue of tasks
+var taskQueue Queue
+
+// Run a task
+func Run(t *models.Task) error {
+	switch t.Type {
+	case structs.TaskTypeMigrateRepo:
+		return runMigrateTask(t)
+	default:
+		return fmt.Errorf("Unknow task type: %d", t.Type)
+	}
+}
+
+// Init will start the service to get all unfinished tasks and run them
+func Init() error {
+	switch setting.Task.QueueType {
+	case setting.ChannelQueueType:
+		taskQueue = NewChannelQueue(setting.Task.QueueLength)
+	case setting.RedisQueueType:
+		var err error
+		addrs, pass, idx, err := parseConnStr(setting.Task.QueueConnStr)
+		if err != nil {
+			return err
+		}
+		taskQueue, err = NewRedisQueue(addrs, pass, idx)
+		if err != nil {
+			return err
+		}
+	default:
+		return fmt.Errorf("Unsupported task queue type: %v", setting.Task.QueueType)
+	}
+
+	go func() {
+		if err := taskQueue.Run(); err != nil {
+			log.Error("taskQueue.Run end failed: %v", err)
+		}
+	}()
+
+	return nil
+}
+
+// MigrateRepository add migration repository to task
+func MigrateRepository(doer, u *models.User, opts base.MigrateOptions) error {
+	task, err := models.CreateMigrateTask(doer, u, opts)
+	if err != nil {
+		return err
+	}
+
+	return taskQueue.Push(task)
+}
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@ -633,6 +633,8 @@ migrate.lfs_mirror_unsupported = Mirroring LFS objects is not supported - use 'g
 migrate.migrate_items_options = When migrating from github, input a username and migration options will be displayed.
 migrated_from = Migrated from <a href="%[1]s">%[2]s</a>
 migrated_from_fake = Migrated From %[1]s
+migrate.migrating = Migrating from <b>%s</b> ...
+migrate.migrating_failed = Migrating from <b>%s</b> failed.

 mirror_from = mirror of
 forked_from = forked from
--- a/public/img/loading.png
+++ b/public/img/loading.png
--- a/public/js/index.js
+++ b/public/js/index.js
@ -241,6 +241,41 @@ function updateIssuesMeta(url, action, issueIds, elementId) {
    })
 }

+function initRepoStatusChecker() {
+    const migrating = $("#repo_migrating");
+    $('#repo_migrating_failed').hide();
+    if (migrating) {
+        const repo_name = migrating.attr('repo');
+        if (typeof repo_name === 'undefined') {
+            return
+        }
+        $.ajax({
+            type: "GET",
+            url: suburl +"/"+repo_name+"/status",
+            data: {
+                "_csrf": csrf,
+            },
+            complete: function(xhr) {
+                if (xhr.status == 200) {
+                    if (xhr.responseJSON) {
+                        if (xhr.responseJSON["status"] == 0) {
+                            location.reload();
+                            return
+                        }
+            
+                        setTimeout(function () {
+                            initRepoStatusChecker()
+                        }, 2000);
+                        return
+                    }
+                }
+                $('#repo_migrating_progress').hide();
+                $('#repo_migrating_failed').show();
+            }
+        })
+    }
+}
+
 function initReactionSelector(parent) {
    let reactions = '';
    if (!parent) {
@ -2219,6 +2254,7 @@ $(document).ready(function () {
    initIssueList();
    initWipTitle();
    initPullRequestReview();
+    initRepoStatusChecker();

    // Repo clone url.
    if ($('#repo-clone-url').length > 0) {
--- a/routers/api/v1/repo/repo.go
+++ b/routers/api/v1/repo/repo.go
@ -398,8 +398,8 @@ func Migrate(ctx *context.APIContext, form auth.MigrateRepoForm) {
 	}

 	var opts = migrations.MigrateOptions{
-		RemoteURL:    remoteAddr,
-		Name:         form.RepoName,
+		CloneAddr:    remoteAddr,
+		RepoName:     form.RepoName,
 		Description:  form.Description,
 		Private:      form.Private || setting.Repository.ForcePrivate,
 		Mirror:       form.Mirror,
--- a/routers/init.go
+++ b/routers/init.go
@ -20,6 +20,7 @@ import (
 	"code.gitea.io/gitea/modules/markup/external"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/ssh"
+	"code.gitea.io/gitea/modules/task"
 	"code.gitea.io/gitea/services/mailer"
 	mirror_service "code.gitea.io/gitea/services/mirror"

@ -102,6 +103,9 @@ func GlobalInit() {
 		mirror_service.InitSyncMirrors()
 		models.InitDeliverHooks()
 		models.InitTestPullRequests()
+		if err := task.Init(); err != nil {
+			log.Fatal("Failed to initialize task scheduler: %v", err)
+		}
 	}
 	if setting.EnableSQLite3 {
 		log.Info("SQLite3 Supported")
--- a/routers/private/serv.go
+++ b/routers/private/serv.go
@ -119,6 +119,15 @@ func ServCommand(ctx *macaron.Context) {
 	repo.OwnerName = ownerName
 	results.RepoID = repo.ID

+	if repo.IsBeingCreated() {
+		ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
+			"results": results,
+			"type":    "InternalServerError",
+			"err":     "Repository is being created, you could retry after it finished",
+		})
+		return
+	}
+
 	// We can shortcut at this point if the repo is a mirror
 	if mode > models.AccessModeRead && repo.IsMirror {
 		ctx.JSON(http.StatusUnauthorized, map[string]interface{}{
--- a/routers/repo/repo.go
+++ b/routers/repo/repo.go
@ -19,6 +19,7 @@ import (
 	"code.gitea.io/gitea/modules/migrations"
 	"code.gitea.io/gitea/modules/notification"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/task"
 	"code.gitea.io/gitea/modules/util"

 	"github.com/unknwon/com"
@ -133,8 +134,6 @@ func Create(ctx *context.Context) {

 func handleCreateError(ctx *context.Context, owner *models.User, err error, name string, tpl base.TplName, form interface{}) {
 	switch {
-	case migrations.IsRateLimitError(err):
-		ctx.RenderWithErr(ctx.Tr("form.visit_rate_limit"), tpl, form)
 	case models.IsErrReachLimitOfRepo(err):
 		ctx.RenderWithErr(ctx.Tr("repo.form.reach_limit_of_creation", owner.MaxCreationLimit()), tpl, form)
 	case models.IsErrRepoAlreadyExist(err):
@ -221,6 +220,40 @@ func Migrate(ctx *context.Context) {
 	ctx.HTML(200, tplMigrate)
 }

+func handleMigrateError(ctx *context.Context, owner *models.User, err error, name string, tpl base.TplName, form *auth.MigrateRepoForm) {
+	switch {
+	case migrations.IsRateLimitError(err):
+		ctx.RenderWithErr(ctx.Tr("form.visit_rate_limit"), tpl, form)
+	case migrations.IsTwoFactorAuthError(err):
+		ctx.RenderWithErr(ctx.Tr("form.2fa_auth_required"), tpl, form)
+	case models.IsErrReachLimitOfRepo(err):
+		ctx.RenderWithErr(ctx.Tr("repo.form.reach_limit_of_creation", owner.MaxCreationLimit()), tpl, form)
+	case models.IsErrRepoAlreadyExist(err):
+		ctx.Data["Err_RepoName"] = true
+		ctx.RenderWithErr(ctx.Tr("form.repo_name_been_taken"), tpl, form)
+	case models.IsErrNameReserved(err):
+		ctx.Data["Err_RepoName"] = true
+		ctx.RenderWithErr(ctx.Tr("repo.form.name_reserved", err.(models.ErrNameReserved).Name), tpl, form)
+	case models.IsErrNamePatternNotAllowed(err):
+		ctx.Data["Err_RepoName"] = true
+		ctx.RenderWithErr(ctx.Tr("repo.form.name_pattern_not_allowed", err.(models.ErrNamePatternNotAllowed).Pattern), tpl, form)
+	default:
+		remoteAddr, _ := form.ParseRemoteAddr(owner)
+		err = util.URLSanitizedError(err, remoteAddr)
+		if strings.Contains(err.Error(), "Authentication failed") ||
+			strings.Contains(err.Error(), "Bad credentials") ||
+			strings.Contains(err.Error(), "could not read Username") {
+			ctx.Data["Err_Auth"] = true
+			ctx.RenderWithErr(ctx.Tr("form.auth_failed", err.Error()), tpl, form)
+		} else if strings.Contains(err.Error(), "fatal:") {
+			ctx.Data["Err_CloneAddr"] = true
+			ctx.RenderWithErr(ctx.Tr("repo.migrate.failed", err.Error()), tpl, form)
+		} else {
+			ctx.ServerError(name, err)
+		}
+	}
+}
+
 // MigratePost response for migrating from external git repository
 func MigratePost(ctx *context.Context, form auth.MigrateRepoForm) {
 	ctx.Data["Title"] = ctx.Tr("new_migrate")
@ -258,8 +291,8 @@ func MigratePost(ctx *context.Context, form auth.MigrateRepoForm) {
 	}

 	var opts = migrations.MigrateOptions{
-		RemoteURL:    remoteAddr,
-		Name:         form.RepoName,
+		CloneAddr:    remoteAddr,
+		RepoName:     form.RepoName,
 		Description:  form.Description,
 		Private:      form.Private || setting.Repository.ForcePrivate,
 		Mirror:       form.Mirror,
@ -282,47 +315,19 @@ func MigratePost(ctx *context.Context, form auth.MigrateRepoForm) {
 		opts.Releases = false
 	}

-	repo, err := migrations.MigrateRepository(ctx.User, ctxUser.Name, opts)
-	if err == nil {
-		notification.NotifyCreateRepository(ctx.User, ctxUser, repo)
-
-		log.Trace("Repository migrated [%d]: %s/%s successfully", repo.ID, ctxUser.Name, form.RepoName)
-		ctx.Redirect(setting.AppSubURL + "/" + ctxUser.Name + "/" + form.RepoName)
+	err = models.CheckCreateRepository(ctx.User, ctxUser, opts.RepoName)
+	if err != nil {
+		handleMigrateError(ctx, ctxUser, err, "MigratePost", tplMigrate, &form)
 		return
 	}

-	switch {
-	case models.IsErrReachLimitOfRepo(err):
-		ctx.RenderWithErr(ctx.Tr("repo.form.reach_limit_of_creation", ctxUser.MaxCreationLimit()), tplMigrate, &form)
-	case models.IsErrNameReserved(err):
-		ctx.Data["Err_RepoName"] = true
-		ctx.RenderWithErr(ctx.Tr("repo.form.name_reserved", err.(models.ErrNameReserved).Name), tplMigrate, &form)
-	case models.IsErrRepoAlreadyExist(err):
-		ctx.Data["Err_RepoName"] = true
-		ctx.RenderWithErr(ctx.Tr("form.repo_name_been_taken"), tplMigrate, &form)
-	case models.IsErrNamePatternNotAllowed(err):
-		ctx.Data["Err_RepoName"] = true
-		ctx.RenderWithErr(ctx.Tr("repo.form.name_pattern_not_allowed", err.(models.ErrNamePatternNotAllowed).Pattern), tplMigrate, &form)
-	case migrations.IsRateLimitError(err):
-		ctx.RenderWithErr(ctx.Tr("form.visit_rate_limit"), tplMigrate, &form)
-	case migrations.IsTwoFactorAuthError(err):
-		ctx.Data["Err_Auth"] = true
-		ctx.RenderWithErr(ctx.Tr("form.2fa_auth_required"), tplMigrate, &form)
-	default:
-		// remoteAddr may contain credentials, so we sanitize it
-		err = util.URLSanitizedError(err, remoteAddr)
-		if strings.Contains(err.Error(), "Authentication failed") ||
-			strings.Contains(err.Error(), "Bad credentials") ||
-			strings.Contains(err.Error(), "could not read Username") {
-			ctx.Data["Err_Auth"] = true
-			ctx.RenderWithErr(ctx.Tr("form.auth_failed", err.Error()), tplMigrate, &form)
-		} else if strings.Contains(err.Error(), "fatal:") {
-			ctx.Data["Err_CloneAddr"] = true
-			ctx.RenderWithErr(ctx.Tr("repo.migrate.failed", err.Error()), tplMigrate, &form)
-		} else {
-			ctx.ServerError("MigratePost", err)
-		}
+	err = task.MigrateRepository(ctx.User, ctxUser, opts)
+	if err == nil {
+		ctx.Redirect(setting.AppSubURL + "/" + ctxUser.Name + "/" + opts.RepoName)
+		return
 	}
+
+	handleMigrateError(ctx, ctxUser, err, "MigratePost", tplMigrate, &form)
 }

 // Action response for actions to a repository
@ -460,3 +465,19 @@ func Download(ctx *context.Context) {

 	ctx.ServeFile(archivePath, ctx.Repo.Repository.Name+"-"+refName+ext)
 }
+
+// Status returns repository's status
+func Status(ctx *context.Context) {
+	task, err := models.GetMigratingTask(ctx.Repo.Repository.ID)
+	if err != nil {
+		ctx.JSON(500, map[string]interface{}{
+			"err": err,
+		})
+		return
+	}
+
+	ctx.JSON(200, map[string]interface{}{
+		"status": ctx.Repo.Repository.Status,
+		"err":    task.Errors,
+	})
+}
--- a/routers/repo/view.go
+++ b/routers/repo/view.go
@ -11,6 +11,7 @@ import (
 	"fmt"
 	gotemplate "html/template"
 	"io/ioutil"
+	"net/url"
 	"path"
 	"strings"

@ -31,6 +32,7 @@ const (
 	tplRepoHome  base.TplName = "repo/home"
 	tplWatchers  base.TplName = "repo/watchers"
 	tplForks     base.TplName = "repo/forks"
+	tplMigrating base.TplName = "repo/migrating"
 )

 func renderDirectory(ctx *context.Context, treeLink string) {
@ -356,9 +358,37 @@ func renderFile(ctx *context.Context, entry *git.TreeEntry, treeLink, rawLink st
 	}
 }

+func safeURL(address string) string {
+	u, err := url.Parse(address)
+	if err != nil {
+		return address
+	}
+	u.User = nil
+	return u.String()
+}
+
 // Home render repository home page
 func Home(ctx *context.Context) {
 	if len(ctx.Repo.Units) > 0 {
+		if ctx.Repo.Repository.IsBeingCreated() {
+			task, err := models.GetMigratingTask(ctx.Repo.Repository.ID)
+			if err != nil {
+				ctx.ServerError("models.GetMigratingTask", err)
+				return
+			}
+			cfg, err := task.MigrateConfig()
+			if err != nil {
+				ctx.ServerError("task.MigrateConfig", err)
+				return
+			}
+
+			ctx.Data["Repo"] = ctx.Repo
+			ctx.Data["MigrateTask"] = task
+			ctx.Data["CloneAddr"] = safeURL(cfg.CloneAddr)
+			ctx.HTML(200, tplMigrating)
+			return
+		}
+
 		var firstUnit *models.Unit
 		for _, repoUnit := range ctx.Repo.Units {
 			if repoUnit.Type == models.UnitTypeCode {
--- a/routers/routes/routes.go
+++ b/routers/routes/routes.go
@ -845,6 +845,8 @@ func RegisterRoutes(m *macaron.Macaron) {

 		m.Get("/archive/*", repo.MustBeNotEmpty, reqRepoCodeReader, repo.Download)

+		m.Get("/status", reqRepoCodeReader, repo.Status)
+
 		m.Group("/branches", func() {
 			m.Get("", repo.Branches)
 		}, repo.MustBeNotEmpty, context.RepoRef(), reqRepoCodeReader)
--- a/services/mirror/mirror_test.go
+++ b/services/mirror/mirror_test.go
@ -10,6 +10,7 @@ import (

 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/structs"
 	release_service "code.gitea.io/gitea/services/release"

 	"github.com/stretchr/testify/assert"
@ -26,16 +27,26 @@ func TestRelease_MirrorDelete(t *testing.T) {
 	repo := models.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	repoPath := models.RepoPath(user.Name, repo.Name)

-	migrationOptions := models.MigrateRepoOptions{
-		Name:                 "test_mirror",
+	opts := structs.MigrateRepoOption{
+		RepoName:    "test_mirror",
 		Description: "Test mirror",
-		IsPrivate:            false,
-		IsMirror:             true,
-		RemoteAddr:           repoPath,
+		Private:     false,
+		Mirror:      true,
+		CloneAddr:   repoPath,
 		Wiki:        true,
-		SyncReleasesWithTags: true,
+		Releases:    false,
 	}
-	mirror, err := models.MigrateRepository(user, user, migrationOptions)
+
+	mirrorRepo, err := models.CreateRepository(user, user, models.CreateRepoOptions{
+		Name:        opts.RepoName,
+		Description: opts.Description,
+		IsPrivate:   opts.Private,
+		IsMirror:    opts.Mirror,
+		Status:      models.RepositoryBeingMigrated,
+	})
+	assert.NoError(t, err)
+
+	mirror, err := models.MigrateRepositoryGitData(user, user, mirrorRepo, opts)
 	assert.NoError(t, err)

 	gitRepo, err := git.OpenRepository(repoPath)
--- a/templates/repo/header.tmpl
+++ b/templates/repo/header.tmpl
@ -16,6 +16,7 @@
 				{{if .IsMirror}}<div class="fork-flag">{{$.i18n.Tr "repo.mirror_from"}} <a target="_blank" rel="noopener noreferrer" href="{{MirrorAddress $.Mirror}}">{{MirrorAddress $.Mirror}}</a></div>{{end}}
 				{{if .IsFork}}<div class="fork-flag">{{$.i18n.Tr "repo.forked_from"}} <a href="{{.BaseRepo.Link}}">{{SubStr .BaseRepo.RelLink 1 -1}}</a></div>{{end}}
 			</div>
+			{{if not .IsBeingCreated}}
 				<div class="repo-buttons">
 					<div class="ui labeled button" tabindex="0">
 						<a class="ui compact basic button" href="{{$.RepoLink}}/action/{{if $.IsWatchingRepo}}un{{end}}watch?redirect_to={{$.Link}}">
@ -44,11 +45,12 @@
 						</div>
 					{{end}}
 				</div>
+			{{end}}
 		</div><!-- end grid -->
 	</div><!-- end container -->
 {{end}}
-
 	<div class="ui tabs container">
+		{{if not .Repository.IsBeingCreated}}
 			<div class="ui tabular stackable menu navbar">
 				{{if .Permission.CanRead $.UnitTypeCode}}
 				<a class="{{if .PageIsViewCode}}active{{end}} item" href="{{.RepoLink}}{{if (ne .BranchName .Repository.DefaultBranch)}}/src/{{.BranchNameSubURL | EscapePound}}{{end}}">
@ -102,7 +104,7 @@
 					</div>
 				{{end}}
 			</div>
+		{{end}}
 	</div>
 	<div class="ui tabs divider"></div>
-
 </div>
--- a/templates/repo/migrating.tmpl
+++ b/templates/repo/migrating.tmpl
@ -0,0 +1,31 @@
+{{template "base/head" .}}
+<div class="repository quickstart">
+	{{template "repo/header" .}}
+	<div class="ui container">
+		<div class="ui grid">
+			<div class="sixteen wide column content">
+				{{template "base/alert" .}}
+				<div class="home">
+					<div class="ui stackable middle very relaxed page grid">
+						<div id="repo_migrating" class="sixteen wide center aligned centered column" repo="{{.Repo.Repository.FullName}}">
+							<div>
+								<img src="{{AppSubUrl}}/img/loading.png"/>
+							</div>
+						</div>
+					</div>
+					<div class="ui stackable middle very relaxed page grid">
+						<div class="sixteen wide center aligned centered column">
+							<div id="repo_migrating_progress">
+								<p>{{.i18n.Tr "repo.migrate.migrating" .CloneAddr | Safe}}</p>
+							</div>
+							<div id="repo_migrating_failed">
+								<p>{{.i18n.Tr "repo.migrate.migrating_failed" .CloneAddr | Safe}}</p>
+							</div>
+						</div>
+					</div>
+				</div>
+			</div>
+		</div>
+	</div>
+</div>
+{{template "base/footer" .}}