diff --git a/job/syncimg/statehandlers.go b/job/syncimg/statehandlers.go
deleted file mode 100644
index 0f1e19d36..000000000
--- a/job/syncimg/statehandlers.go
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
-   Copyright (c) 2016 VMware, Inc. All Rights Reserved.
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package syncimg
-
-/*
-import (
-	"strings"
-
-	"github.com/docker/distribution"
-	"github.com/docker/distribution/manifest/schema1"
-	"github.com/docker/distribution/manifest/schema2"
-	"github.com/vmware/harbor/job"
-	"github.com/vmware/harbor/models"
-	"github.com/vmware/harbor/utils/registry"
-	"github.com/vmware/harbor/utils/registry/auth"
-)
-
-const (
-	//jobType           = "sync_img"
-	stateCheck        = "check"
-	statePullManifest = "pull_manifest"
-	stateTransferBlob = "transfer_blob"
-	statePushManifest = "push_manifest"
-)
-
-func addTransition(sm *job.JobSM) error {
-	base, err := initBaseHandler(sm)
-	if err != nil {
-		return err
-	}
-
-	sm.AddTransition(models.JobRunning, stateCheck, &checker{baseHandler: base})
-	sm.AddTransition(stateCheck, statePullManifest, &manifestPuller{baseHandler: base})
-	sm.AddTransition(statePullManifest, stateTransferBlob, &blobTransfer{baseHandler: base})
-	sm.AddTransition(statePullManifest, models.JobFinished, &job.StatusUpdater{job.DummyHandler{JobID: sm.JobID}, models.JobFinished})
-	sm.AddTransition(stateTransferBlob, statePushManifest, &manifestPusher{baseHandler: base})
-	sm.AddTransition(statePushManifest, statePullManifest, &manifestPuller{baseHandler: base})
-
-	return nil
-}
-
-type baseHandler struct {
-	project    string // project_name
-	repository string // prject_name/repo_name
-	tags       []string
-
-	srcURL       string // url of source registry
-	srcSecretKey string // secretKey ...
-
-	dstURL string // url of target registry
-	dstUsr string // username ...
-	dstPwd string // password ...
-
-	srcClient *registry.Repository
-	dstClient *registry.Repository
-
-	manifest distribution.Manifest // manifest of tags[0]
-	blobs    []string              // blobs need to be transferred for tags[0]
-
-	logger *job.Logger
-}
-
-func initBaseHandler(sm *job.JobSM) (*baseHandler, error) {
-	base := &baseHandler{
-		repository: sm.Parms.Repository,
-		srcURL:     sm.Parms.LocalRegURL,
-		dstURL:     sm.Parms.TargetURL,
-		dstUsr:     sm.Parms.TargetUsername,
-		dstPwd:     sm.Parms.TargetPassword,
-		logger:     &(sm.Logger),
-	}
-
-	base.project = getProjectName(base.repository)
-
-	//TODO using secret key
-	srcCred := auth.NewBasicAuthCredential("admin", "Harbor12345")
-	srcClient, err := registry.NewRepositoryWithCredential(base.repository, base.srcURL, srcCred)
-	if err != nil {
-		return nil, err
-	}
-	base.srcClient = srcClient
-
-	dstCred := auth.NewBasicAuthCredential(base.dstUsr, base.dstPwd)
-	dstClient, err := registry.NewRepositoryWithCredential(base.repository, base.dstURL, dstCred)
-	if err != nil {
-		return nil, err
-	}
-	base.dstClient = dstClient
-
-	if len(base.tags) == 0 {
-		tags, err := base.srcClient.ListTag()
-		if err != nil {
-			return nil, err
-		}
-		base.tags = tags
-	}
-
-	base.logger.Infof("initialization of base handler completed: project: %s, repository: %s, tags: %v, source URL: %s, destination URL: %s, destination user: %s",
-		base.project, base.repository, base.tags, base.srcURL, base.dstURL, base.dstUsr)
-
-	return base, nil
-}
-
-func (b *baseHandler) Exit() error {
-	return nil
-}
-
-func getProjectName(repository string) string {
-	repository = strings.TrimSpace(repository)
-	repository = strings.TrimRight(repository, "/")
-	return repository[:strings.LastIndex(repository, "/")]
-}
-
-type checker struct {
-	*baseHandler
-}
-
-// check existence of project, if it does not exist, create it,
-// if it exists, check whether the user has write privilege to it.
-func (c *checker) Enter() (string, error) {
-	exist, err := c.projectExist()
-	if err != nil {
-		c.logger.Errorf("an error occurred while checking existence of project %s on %s with user %s : %v", c.project, c.dstURL, c.dstUsr, err)
-		return "", err
-	}
-	if !exist {
-		if err := c.createProject(); err != nil {
-			c.logger.Errorf("an error occurred while creating project %s on %s with user %s : %v", c.project, c.dstURL, c.dstUsr, err)
-			return "", err
-		}
-		c.logger.Infof("project %s is created on %s with user %s", c.project, c.dstURL, c.dstUsr)
-		return statePullManifest, nil
-	}
-
-	c.logger.Infof("project %s already exists on %s", c.project, c.dstURL)
-	canWrite, err := c.canWrite()
-	if err != nil {
-		c.logger.Errorf("an error occurred while checking %s 's privileges to project %s on %s : %v", c.dstUsr, c.project, c.dstURL, err)
-		return "", err
-	}
-
-	if !canWrite {
-		c.logger.Errorf("the user %s has no write privilege to project %s on %s", c.dstUsr, c.project, c.dstURL)
-		return "", err
-	}
-	c.logger.Infof("the user %s has write privilege to project %s on %s", c.dstUsr, c.project, c.dstURL)
-
-	return statePullManifest, nil
-}
-
-func (c *checker) projectExist() (bool, error) {
-	exist := true
-	return exist, nil
-}
-
-func (c *checker) createProject() error {
-	return nil
-}
-
-func (c *checker) canWrite() (bool, error) {
-	canWrite := true
-	return canWrite, nil
-}
-
-type manifestPuller struct {
-	*baseHandler
-}
-
-func (m *manifestPuller) Enter() (string, error) {
-	if len(m.tags) == 0 {
-		m.logger.Infof("no tag needs to be replicated, entering finish state")
-		return models.JobFinished, nil
-	}
-
-	name := m.repository
-	tag := m.tags[0]
-
-	acceptMediaTypes := []string{schema1.MediaTypeManifest, schema2.MediaTypeManifest}
-	digest, mediaType, payload, err := m.srcClient.PullManifest(tag, acceptMediaTypes)
-	if err != nil {
-		m.logger.Errorf("an error occurred while pulling manifest of %s:%s from %s: %v", name, tag, m.srcURL, err)
-		return "", err
-	}
-	m.logger.Infof("manifest of %s:%s pulled successfully from %s: %s", name, tag, m.srcURL, digest)
-
-	if strings.Contains(mediaType, "application/json") {
-		mediaType = schema1.MediaTypeManifest
-	}
-
-	manifest, _, err := registry.UnMarshal(mediaType, payload)
-	if err != nil {
-		m.logger.Errorf("an error occurred while parsing manifest of %s:%s from %s: %v", name, tag, m.srcURL, err)
-		return "", err
-	}
-
-	m.manifest = manifest
-
-	// all blobs(layers and config)
-	var blobs []string
-
-	for _, discriptor := range manifest.References() {
-		blobs = append(blobs, discriptor.Digest.String())
-	}
-
-	// config is also need to be transferred if the schema of manifest is v2
-	manifest2, ok := manifest.(*schema2.DeserializedManifest)
-	if ok {
-		blobs = append(blobs, manifest2.Target().Digest.String())
-	}
-
-	m.logger.Infof("all blobs of %s:%s from %s: %v", name, tag, m.srcURL, blobs)
-
-	for _, blob := range blobs {
-		exist, err := m.dstClient.BlobExist(blob)
-		if err != nil {
-			m.logger.Errorf("an error occurred while checking existence of blob %s of %s:%s on %s: %v", blob, name, tag, m.dstURL, err)
-			return "", err
-		}
-		if !exist {
-			m.blobs = append(m.blobs, blob)
-		}
-	}
-	m.logger.Infof("blobs of %s:%s need to be transferred to %s: %v", name, tag, m.dstURL, m.blobs)
-
-	m.blobs = blobs
-
-	return stateTransferBlob, nil
-}
-
-type blobTransfer struct {
-	*baseHandler
-}
-
-func (b *blobTransfer) Enter() (string, error) {
-	name := b.repository
-	tag := b.tags[0]
-	for _, blob := range b.blobs {
-		size, data, err := b.srcClient.PullBlob(blob)
-		if err != nil {
-			b.logger.Errorf("an error occurred while pulling blob %s of %s:%s from %s: %v", blob, name, tag, b.srcURL, err)
-			return "", err
-		}
-		if err = b.dstClient.PushBlob(blob, size, data); err != nil {
-			b.logger.Errorf("an error occurred while pushing blob %s of %s:%s to %s : %v", blob, name, tag, b.dstURL, err)
-			return "", err
-		}
-		b.logger.Infof("blob %s of %s:%s tranferred to %s completed", blob, name, tag, b.dstURL)
-	}
-
-	return statePushManifest, nil
-}
-
-type manifestPusher struct {
-	*baseHandler
-}
-
-func (m *manifestPusher) Enter() (string, error) {
-	name := m.repository
-	tag := m.tags[0]
-	_, exist, err := m.srcClient.ManifestExist(tag)
-	if err != nil {
-		m.logger.Infof("an error occurred while checking the existence of manifest of %s:%s on %s: %v", name, tag, m.srcURL, err)
-		return "", err
-	}
-	if !exist {
-		m.logger.Infof("manifest of %s:%s does not exist on source registry %s, cancel manifest pushing", name, tag, m.srcURL)
-	} else {
-		m.logger.Infof("manifest of %s:%s exists on source registry %s, continue manifest pushing", name, tag, m.srcURL)
-		mediaType, data, err := m.manifest.Payload()
-		if err != nil {
-			m.logger.Errorf("an error occurred while getting payload of manifest for %s:%s : %v", name, tag, err)
-			return "", err
-		}
-		if _, err = m.dstClient.PushManifest(tag, mediaType, data); err != nil {
-			m.logger.Errorf("an error occurred while pushing manifest of %s:%s to %s : %v", name, tag, m.dstURL, err)
-			return "", err
-		}
-		m.logger.Infof("manifest of %s:%s has been pushed to %s", name, tag, m.dstURL)
-	}
-
-	m.tags = m.tags[1:]
-
-	return statePullManifest, nil
-}
-*/