diff --git a/src/api/tag/controller.go b/src/api/tag/controller.go
index d152d9345..ba5e792d9 100644
--- a/src/api/tag/controller.go
+++ b/src/api/tag/controller.go
@@ -6,8 +6,8 @@ import (
 	"github.com/goharbor/harbor/src/common/utils/log"
 	ierror "github.com/goharbor/harbor/src/internal/error"
 	"github.com/goharbor/harbor/src/internal/orm"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/artifact"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
 	"github.com/goharbor/harbor/src/pkg/immutabletag/match"
 	"github.com/goharbor/harbor/src/pkg/immutabletag/match/rule"
 	"github.com/goharbor/harbor/src/pkg/q"
@@ -207,7 +207,7 @@ func (c *controller) populateImmutableStatus(ctx context.Context, tag *Tag) {
 		return
 	}
 	_, repoName := utils.ParseRepository(artifact.RepositoryName)
-	matched, err := c.immutableMtr.Match(artifact.ProjectID, artifactselector.Candidate{
+	matched, err := c.immutableMtr.Match(artifact.ProjectID, selector.Candidate{
 		Repository:  repoName,
 		Tags:        []string{tag.Name},
 		NamespaceID: artifact.ProjectID,
diff --git a/src/pkg/artifactselector/candidate.go b/src/internal/selector/candidate.go
similarity index 99%
rename from src/pkg/artifactselector/candidate.go
rename to src/internal/selector/candidate.go
index 8a3996f29..de5a7e932 100644
--- a/src/pkg/artifactselector/candidate.go
+++ b/src/internal/selector/candidate.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package artifactselector
+package selector
 
 import (
 	"encoding/base64"
diff --git a/src/pkg/artifactselector/result.go b/src/internal/selector/result.go
similarity index 97%
rename from src/pkg/artifactselector/result.go
rename to src/internal/selector/result.go
index 489cea879..216f2134b 100644
--- a/src/pkg/artifactselector/result.go
+++ b/src/internal/selector/result.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package artifactselector
+package selector
 
 // Result keeps the action result
 type Result struct {
diff --git a/src/pkg/artifactselector/selector.go b/src/internal/selector/selector.go
similarity index 84%
rename from src/pkg/artifactselector/selector.go
rename to src/internal/selector/selector.go
index 62cb80837..24ec1b89d 100644
--- a/src/pkg/artifactselector/selector.go
+++ b/src/internal/selector/selector.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package artifactselector
+package selector
 
 // Selector is used to filter the inputting list
 type Selector interface {
@@ -26,5 +26,5 @@ type Selector interface {
 	Select(artifacts []*Candidate) ([]*Candidate, error)
 }
 
-// SelectorFactory is factory method to return a selector implementation
-type SelectorFactory func(decoration string, pattern string) Selector
+// Factory is factory method to return a selector implementation
+type Factory func(decoration string, pattern string) Selector
diff --git a/src/pkg/artifactselector/selectors/doublestar/selector.go b/src/internal/selector/selectors/doublestar/selector.go
similarity index 86%
rename from src/pkg/artifactselector/selectors/doublestar/selector.go
rename to src/internal/selector/selectors/doublestar/selector.go
index 106d3c128..96f1e8918 100644
--- a/src/pkg/artifactselector/selectors/doublestar/selector.go
+++ b/src/internal/selector/selectors/doublestar/selector.go
@@ -16,7 +16,7 @@ package doublestar
 
 import (
 	"github.com/bmatcuk/doublestar"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	iselector "github.com/goharbor/harbor/src/internal/selector"
 )
 
 const (
@@ -46,7 +46,7 @@ type selector struct {
 }
 
 // Select candidates by regular expressions
-func (s *selector) Select(artifacts []*artifactselector.Candidate) (selected []*artifactselector.Candidate, err error) {
+func (s *selector) Select(artifacts []*iselector.Candidate) (selected []*iselector.Candidate, err error) {
 	value := ""
 	excludes := false
 
@@ -96,7 +96,7 @@ func (s *selector) Select(artifacts []*artifactselector.Candidate) (selected []*
 	return selected, nil
 }
 
-func (s *selector) tagSelectMatch(artifact *artifactselector.Candidate) (selected bool, err error) {
+func (s *selector) tagSelectMatch(artifact *iselector.Candidate) (selected bool, err error) {
 	for _, t := range artifact.Tags {
 		matched, err := match(s.pattern, t)
 		if err != nil {
@@ -109,7 +109,7 @@ func (s *selector) tagSelectMatch(artifact *artifactselector.Candidate) (selecte
 	return false, nil
 }
 
-func (s *selector) tagSelectExclude(artifact *artifactselector.Candidate) (selected bool, err error) {
+func (s *selector) tagSelectExclude(artifact *iselector.Candidate) (selected bool, err error) {
 	for _, t := range artifact.Tags {
 		matched, err := match(s.pattern, t)
 		if err != nil {
@@ -123,7 +123,7 @@ func (s *selector) tagSelectExclude(artifact *artifactselector.Candidate) (selec
 }
 
 // New is factory method for doublestar selector
-func New(decoration string, pattern string) artifactselector.Selector {
+func New(decoration string, pattern string) iselector.Selector {
 	return &selector{
 		decoration: decoration,
 		pattern:    pattern,
diff --git a/src/pkg/artifactselector/selectors/doublestar/selector_test.go b/src/internal/selector/selectors/doublestar/selector_test.go
similarity index 95%
rename from src/pkg/artifactselector/selectors/doublestar/selector_test.go
rename to src/internal/selector/selectors/doublestar/selector_test.go
index 8440736d7..aa140abbd 100644
--- a/src/pkg/artifactselector/selectors/doublestar/selector_test.go
+++ b/src/internal/selector/selectors/doublestar/selector_test.go
@@ -16,7 +16,7 @@ package doublestar
 
 import (
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	iselector "github.com/goharbor/harbor/src/internal/selector"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
@@ -28,7 +28,7 @@ import (
 type RegExpSelectorTestSuite struct {
 	suite.Suite
 
-	artifacts []*artifactselector.Candidate
+	artifacts []*iselector.Candidate
 }
 
 // TestRegExpSelector is entrance for RegExpSelectorTestSuite
@@ -38,13 +38,13 @@ func TestRegExpSelector(t *testing.T) {
 
 // SetupSuite to do preparation work
 func (suite *RegExpSelectorTestSuite) SetupSuite() {
-	suite.artifacts = []*artifactselector.Candidate{
+	suite.artifacts = []*iselector.Candidate{
 		{
 			NamespaceID:  1,
 			Namespace:    "library",
 			Repository:   "harbor",
 			Tags:         []string{"latest"},
-			Kind:         artifactselector.Image,
+			Kind:         iselector.Image,
 			PushedTime:   time.Now().Unix() - 3600,
 			PulledTime:   time.Now().Unix(),
 			CreationTime: time.Now().Unix() - 7200,
@@ -55,7 +55,7 @@ func (suite *RegExpSelectorTestSuite) SetupSuite() {
 			Namespace:    "retention",
 			Repository:   "redis",
 			Tags:         []string{"4.0"},
-			Kind:         artifactselector.Image,
+			Kind:         iselector.Image,
 			PushedTime:   time.Now().Unix() - 3600,
 			PulledTime:   time.Now().Unix(),
 			CreationTime: time.Now().Unix() - 7200,
@@ -66,7 +66,7 @@ func (suite *RegExpSelectorTestSuite) SetupSuite() {
 			Namespace:    "retention",
 			Repository:   "redis",
 			Tags:         []string{"4.1"},
-			Kind:         artifactselector.Image,
+			Kind:         iselector.Image,
 			PushedTime:   time.Now().Unix() - 3600,
 			PulledTime:   time.Now().Unix(),
 			CreationTime: time.Now().Unix() - 7200,
@@ -235,7 +235,7 @@ func (suite *RegExpSelectorTestSuite) TestNSExcludes() {
 }
 
 // Check whether the returned result matched the expected ones (only check repo:tag)
-func expect(expected []string, candidates []*artifactselector.Candidate) bool {
+func expect(expected []string, candidates []*iselector.Candidate) bool {
 	hash := make(map[string]bool)
 
 	for _, art := range candidates {
diff --git a/src/pkg/artifactselector/selectors/index/index.go b/src/internal/selector/selectors/index/index.go
similarity index 87%
rename from src/pkg/artifactselector/selectors/index/index.go
rename to src/internal/selector/selectors/index/index.go
index 8c6c605ba..158828e03 100644
--- a/src/pkg/artifactselector/selectors/index/index.go
+++ b/src/internal/selector/selectors/index/index.go
@@ -15,10 +15,10 @@
 package index
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"sync"
 
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/doublestar"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/doublestar"
 	"github.com/pkg/errors"
 )
 
@@ -49,11 +49,11 @@ type IndexedMeta struct {
 // indexedItem defined item kept in the index
 type indexedItem struct {
 	Meta    *IndexedMeta
-	Factory artifactselector.SelectorFactory
+	Factory selector.Factory
 }
 
 // Register the selector with the corresponding selector kind and decoration
-func Register(kind string, decorations []string, factory artifactselector.SelectorFactory) {
+func Register(kind string, decorations []string, factory selector.Factory) {
 	if len(kind) == 0 || factory == nil {
 		// do nothing
 		return
@@ -69,7 +69,7 @@ func Register(kind string, decorations []string, factory artifactselector.Select
 }
 
 // Get selector with the provided kind and decoration
-func Get(kind, decoration, pattern string) (artifactselector.Selector, error) {
+func Get(kind, decoration, pattern string) (selector.Selector, error) {
 	if len(kind) == 0 || len(decoration) == 0 {
 		return nil, errors.New("empty selector kind or decoration")
 	}
diff --git a/src/pkg/artifactselector/selectors/label/selector.go b/src/internal/selector/selectors/label/selector.go
similarity index 87%
rename from src/pkg/artifactselector/selectors/label/selector.go
rename to src/internal/selector/selectors/label/selector.go
index 17c784869..4c3b87d2b 100644
--- a/src/pkg/artifactselector/selectors/label/selector.go
+++ b/src/internal/selector/selectors/label/selector.go
@@ -15,7 +15,7 @@
 package label
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	iselector "github.com/goharbor/harbor/src/internal/selector"
 	"strings"
 )
 
@@ -38,7 +38,7 @@ type selector struct {
 }
 
 // Select candidates by the labels
-func (s *selector) Select(artifacts []*artifactselector.Candidate) (selected []*artifactselector.Candidate, err error) {
+func (s *selector) Select(artifacts []*iselector.Candidate) (selected []*iselector.Candidate, err error) {
 	for _, art := range artifacts {
 		if isMatched(s.labels, art.Labels, s.decoration) {
 			selected = append(selected, art)
@@ -49,7 +49,7 @@ func (s *selector) Select(artifacts []*artifactselector.Candidate) (selected []*
 }
 
 // New is factory method for list selector
-func New(decoration string, pattern string) artifactselector.Selector {
+func New(decoration string, pattern string) iselector.Selector {
 	labels := make([]string, 0)
 	if len(pattern) > 0 {
 		labels = append(labels, strings.Split(pattern, ",")...)
diff --git a/src/pkg/artifactselector/selectors/label/selector_test.go b/src/internal/selector/selectors/label/selector_test.go
similarity index 92%
rename from src/pkg/artifactselector/selectors/label/selector_test.go
rename to src/internal/selector/selectors/label/selector_test.go
index cf19e6707..21058d935 100644
--- a/src/pkg/artifactselector/selectors/label/selector_test.go
+++ b/src/internal/selector/selectors/label/selector_test.go
@@ -16,7 +16,7 @@ package label
 
 import (
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	iselector "github.com/goharbor/harbor/src/internal/selector"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
@@ -28,7 +28,7 @@ import (
 type LabelSelectorTestSuite struct {
 	suite.Suite
 
-	artifacts []*artifactselector.Candidate
+	artifacts []*iselector.Candidate
 }
 
 // TestLabelSelector is entrance for LabelSelectorTestSuite
@@ -38,13 +38,13 @@ func TestLabelSelector(t *testing.T) {
 
 // SetupSuite to do preparation work
 func (suite *LabelSelectorTestSuite) SetupSuite() {
-	suite.artifacts = []*artifactselector.Candidate{
+	suite.artifacts = []*iselector.Candidate{
 		{
 			NamespaceID:  1,
 			Namespace:    "library",
 			Repository:   "harbor",
 			Tags:         []string{"1.9"},
-			Kind:         artifactselector.Image,
+			Kind:         iselector.Image,
 			PushedTime:   time.Now().Unix() - 3600,
 			PulledTime:   time.Now().Unix(),
 			CreationTime: time.Now().Unix() - 7200,
@@ -55,7 +55,7 @@ func (suite *LabelSelectorTestSuite) SetupSuite() {
 			Namespace:    "library",
 			Repository:   "harbor",
 			Tags:         []string{"dev"},
-			Kind:         artifactselector.Image,
+			Kind:         iselector.Image,
 			PushedTime:   time.Now().Unix() - 3600,
 			PulledTime:   time.Now().Unix(),
 			CreationTime: time.Now().Unix() - 7200,
@@ -131,7 +131,7 @@ func (suite *LabelSelectorTestSuite) TestWithoutNoneExistingLabels() {
 }
 
 // Check whether the returned result matched the expected ones (only check repo:tag)
-func expect(expected []string, candidates []*artifactselector.Candidate) bool {
+func expect(expected []string, candidates []*iselector.Candidate) bool {
 	hash := make(map[string]bool)
 
 	for _, art := range candidates {
diff --git a/src/pkg/immutabletag/match/matcher.go b/src/pkg/immutabletag/match/matcher.go
index ddff57bff..0d1717c52 100644
--- a/src/pkg/immutabletag/match/matcher.go
+++ b/src/pkg/immutabletag/match/matcher.go
@@ -1,11 +1,11 @@
 package match
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 )
 
 // ImmutableTagMatcher ...
 type ImmutableTagMatcher interface {
 	// Match whether the candidate is in the immutable list
-	Match(pid int64, c artifactselector.Candidate) (bool, error)
+	Match(pid int64, c selector.Candidate) (bool, error)
 }
diff --git a/src/pkg/immutabletag/match/rule/match.go b/src/pkg/immutabletag/match/rule/match.go
index 2ef2dadba..da0405b07 100644
--- a/src/pkg/immutabletag/match/rule/match.go
+++ b/src/pkg/immutabletag/match/rule/match.go
@@ -1,8 +1,8 @@
 package rule
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/index"
+	iselector "github.com/goharbor/harbor/src/internal/selector"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/index"
 	"github.com/goharbor/harbor/src/pkg/immutabletag"
 	"github.com/goharbor/harbor/src/pkg/immutabletag/match"
 	"github.com/goharbor/harbor/src/pkg/immutabletag/model"
@@ -14,19 +14,19 @@ type Matcher struct {
 }
 
 // Match ...
-func (rm *Matcher) Match(pid int64, c artifactselector.Candidate) (bool, error) {
+func (rm *Matcher) Match(pid int64, c iselector.Candidate) (bool, error) {
 	if err := rm.getImmutableRules(pid); err != nil {
 		return false, err
 	}
 
-	cands := []*artifactselector.Candidate{&c}
+	cands := []*iselector.Candidate{&c}
 	for _, r := range rm.rules {
 		if r.Disabled {
 			continue
 		}
 
 		// match repositories according to the repository selectors
-		var repositoryCandidates []*artifactselector.Candidate
+		var repositoryCandidates []*iselector.Candidate
 		repositorySelectors := r.ScopeSelectors["repository"]
 		if len(repositorySelectors) < 1 {
 			continue
@@ -46,7 +46,7 @@ func (rm *Matcher) Match(pid int64, c artifactselector.Candidate) (bool, error)
 		}
 
 		// match tag according to the tag selectors
-		var tagCandidates []*artifactselector.Candidate
+		var tagCandidates []*iselector.Candidate
 		tagSelectors := r.TagSelectors
 		if len(tagSelectors) < 0 {
 			continue
diff --git a/src/pkg/immutabletag/match/rule/match_test.go b/src/pkg/immutabletag/match/rule/match_test.go
index 274f74850..ce839bdd3 100644
--- a/src/pkg/immutabletag/match/rule/match_test.go
+++ b/src/pkg/immutabletag/match/rule/match_test.go
@@ -2,7 +2,7 @@ package rule
 
 import (
 	"github.com/goharbor/harbor/src/common/dao"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/immutabletag"
 	"github.com/goharbor/harbor/src/pkg/immutabletag/model"
 	"github.com/stretchr/testify/assert"
@@ -87,7 +87,7 @@ func (s *MatchTestSuite) TestImmuMatch() {
 
 	match := NewRuleMatcher()
 
-	c1 := artifactselector.Candidate{
+	c1 := selector.Candidate{
 		NamespaceID: 1,
 		Namespace:   "library",
 		Repository:  "redis",
@@ -97,34 +97,34 @@ func (s *MatchTestSuite) TestImmuMatch() {
 	s.require.Equal(isMatch, true)
 	s.require.Nil(err)
 
-	c2 := artifactselector.Candidate{
+	c2 := selector.Candidate{
 		NamespaceID: 1,
 		Namespace:   "library",
 		Repository:  "redis",
 		Tags:        []string{"1.10"},
-		Kind:        artifactselector.Image,
+		Kind:        selector.Image,
 	}
 	isMatch, err = match.Match(1, c2)
 	s.require.Equal(isMatch, false)
 	s.require.Nil(err)
 
-	c3 := artifactselector.Candidate{
+	c3 := selector.Candidate{
 		NamespaceID: 1,
 		Namespace:   "immutable",
 		Repository:  "mysql",
 		Tags:        []string{"9.4.8"},
-		Kind:        artifactselector.Image,
+		Kind:        selector.Image,
 	}
 	isMatch, err = match.Match(1, c3)
 	s.require.Equal(isMatch, true)
 	s.require.Nil(err)
 
-	c4 := artifactselector.Candidate{
+	c4 := selector.Candidate{
 		NamespaceID: 1,
 		Namespace:   "immutable",
 		Repository:  "hello",
 		Tags:        []string{"world"},
-		Kind:        artifactselector.Image,
+		Kind:        selector.Image,
 	}
 	isMatch, err = match.Match(1, c4)
 	s.require.Equal(isMatch, false)
diff --git a/src/pkg/retention/dep/client.go b/src/pkg/retention/dep/client.go
index 4448e3e87..93e5208ef 100644
--- a/src/pkg/retention/dep/client.go
+++ b/src/pkg/retention/dep/client.go
@@ -17,7 +17,7 @@ package dep
 import (
 	"errors"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"net/http"
 	"time"
 
@@ -39,7 +39,7 @@ type Client interface {
 	//  Returns:
 	//    []*art.Candidate : candidates returned
 	//    error            : common error if any errors occurred
-	GetCandidates(repo *artifactselector.Repository) ([]*artifactselector.Candidate, error)
+	GetCandidates(repo *selector.Repository) ([]*selector.Candidate, error)
 
 	// Delete the given repository
 	//
@@ -48,7 +48,7 @@ type Client interface {
 	//
 	//  Returns:
 	//    error            : common error if any errors occurred
-	DeleteRepository(repo *artifactselector.Repository) error
+	DeleteRepository(repo *selector.Repository) error
 
 	// Delete the specified candidate
 	//
@@ -57,7 +57,7 @@ type Client interface {
 	//
 	//  Returns:
 	//    error : common error if any errors occurred
-	Delete(candidate *artifactselector.Candidate) error
+	Delete(candidate *selector.Candidate) error
 }
 
 // NewClient new a basic client
@@ -89,13 +89,13 @@ type basicClient struct {
 }
 
 // GetCandidates gets the tag candidates under the repository
-func (bc *basicClient) GetCandidates(repository *artifactselector.Repository) ([]*artifactselector.Candidate, error) {
+func (bc *basicClient) GetCandidates(repository *selector.Repository) ([]*selector.Candidate, error) {
 	if repository == nil {
 		return nil, errors.New("repository is nil")
 	}
-	candidates := make([]*artifactselector.Candidate, 0)
+	candidates := make([]*selector.Candidate, 0)
 	switch repository.Kind {
-	case artifactselector.Image:
+	case selector.Image:
 		artifacts, err := bc.coreClient.ListAllArtifacts(repository.Namespace, repository.Name)
 		if err != nil {
 			return nil, err
@@ -120,8 +120,8 @@ func (bc *basicClient) GetCandidates(repository *artifactselector.Repository) ([
 					lastPushedTime = t.PushTime
 				}
 			}
-			candidate := &artifactselector.Candidate{
-				Kind:         artifactselector.Image,
+			candidate := &selector.Candidate{
+				Kind:         selector.Image,
 				NamespaceID:  repository.NamespaceID,
 				Namespace:    repository.Namespace,
 				Repository:   repository.Name,
@@ -165,12 +165,12 @@ func (bc *basicClient) GetCandidates(repository *artifactselector.Repository) ([
 }
 
 // DeleteRepository deletes the specified repository
-func (bc *basicClient) DeleteRepository(repo *artifactselector.Repository) error {
+func (bc *basicClient) DeleteRepository(repo *selector.Repository) error {
 	if repo == nil {
 		return errors.New("repository is nil")
 	}
 	switch repo.Kind {
-	case artifactselector.Image:
+	case selector.Image:
 		return bc.coreClient.DeleteArtifactRepository(repo.Namespace, repo.Name)
 	/*
 		case art.Chart:
@@ -182,12 +182,12 @@ func (bc *basicClient) DeleteRepository(repo *artifactselector.Repository) error
 }
 
 // Deletes the specified candidate
-func (bc *basicClient) Delete(candidate *artifactselector.Candidate) error {
+func (bc *basicClient) Delete(candidate *selector.Candidate) error {
 	if candidate == nil {
 		return errors.New("candidate is nil")
 	}
 	switch candidate.Kind {
-	case artifactselector.Image:
+	case selector.Image:
 		return bc.coreClient.DeleteArtifact(candidate.Namespace, candidate.Repository, candidate.Digest)
 	/*
 		case art.Chart:
diff --git a/src/pkg/retention/dep/client_test.go b/src/pkg/retention/dep/client_test.go
index f70e084da..3dd3b5c7b 100644
--- a/src/pkg/retention/dep/client_test.go
+++ b/src/pkg/retention/dep/client_test.go
@@ -17,7 +17,7 @@ package dep
 import (
 	modelsv2 "github.com/goharbor/harbor/src/api/artifact"
 	"github.com/goharbor/harbor/src/api/tag"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	model_tag "github.com/goharbor/harbor/src/pkg/tag/model/tag"
 	"testing"
 
@@ -82,20 +82,20 @@ type clientTestSuite struct {
 func (c *clientTestSuite) TestGetCandidates() {
 	client := &basicClient{}
 	client.coreClient = &fakeCoreClient{}
-	var repository *artifactselector.Repository
+	var repository *selector.Repository
 	// nil repository
 	candidates, err := client.GetCandidates(repository)
 	require.NotNil(c.T(), err)
 
 	// image repository
-	repository = &artifactselector.Repository{}
-	repository.Kind = artifactselector.Image
+	repository = &selector.Repository{}
+	repository.Kind = selector.Image
 	repository.Namespace = "library"
 	repository.Name = "hello-world"
 	candidates, err = client.GetCandidates(repository)
 	require.Nil(c.T(), err)
 	assert.Equal(c.T(), 1, len(candidates))
-	assert.Equal(c.T(), artifactselector.Image, candidates[0].Kind)
+	assert.Equal(c.T(), selector.Image, candidates[0].Kind)
 	assert.Equal(c.T(), "library", candidates[0].Namespace)
 	assert.Equal(c.T(), "hello-world", candidates[0].Repository)
 	assert.Equal(c.T(), "latest", candidates[0].Tags[0])
@@ -118,14 +118,14 @@ func (c *clientTestSuite) TestDelete() {
 	client := &basicClient{}
 	client.coreClient = &fakeCoreClient{}
 
-	var candidate *artifactselector.Candidate
+	var candidate *selector.Candidate
 	// nil candidate
 	err := client.Delete(candidate)
 	require.NotNil(c.T(), err)
 
 	// image
-	candidate = &artifactselector.Candidate{}
-	candidate.Kind = artifactselector.Image
+	candidate = &selector.Candidate{}
+	candidate.Kind = selector.Image
 	err = client.Delete(candidate)
 	require.Nil(c.T(), err)
 
diff --git a/src/pkg/retention/job.go b/src/pkg/retention/job.go
index cd69bec46..2201396b5 100644
--- a/src/pkg/retention/job.go
+++ b/src/pkg/retention/job.go
@@ -18,7 +18,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"strings"
 	"time"
 
@@ -117,18 +117,18 @@ func (pj *Job) Run(ctx job.Context, params job.Parameters) error {
 	return saveRetainNum(ctx, results, allCandidates, isDryRun)
 }
 
-func saveRetainNum(ctx job.Context, results []*artifactselector.Result, allCandidates []*artifactselector.Candidate, isDryRun bool) error {
-	var realDelete []*artifactselector.Result
+func saveRetainNum(ctx job.Context, results []*selector.Result, allCandidates []*selector.Candidate, isDryRun bool) error {
+	var realDelete []*selector.Result
 	for _, r := range results {
 		if r.Error == nil {
 			realDelete = append(realDelete, r)
 		}
 	}
 	retainObj := struct {
-		Total    int                        `json:"total"`
-		Retained int                        `json:"retained"`
-		DryRun   bool                       `json:"dry_run"`
-		Deleted  []*artifactselector.Result `json:"deleted"`
+		Total    int                `json:"total"`
+		Retained int                `json:"retained"`
+		DryRun   bool               `json:"dry_run"`
+		Deleted  []*selector.Result `json:"deleted"`
 	}{
 		Total:    len(allCandidates),
 		Retained: len(allCandidates) - len(realDelete),
@@ -143,7 +143,7 @@ func saveRetainNum(ctx job.Context, results []*artifactselector.Result, allCandi
 	return nil
 }
 
-func logResults(logger logger.Interface, all []*artifactselector.Candidate, results []*artifactselector.Result) {
+func logResults(logger logger.Interface, all []*selector.Candidate, results []*selector.Result) {
 	hash := make(map[string]error, len(results))
 	for _, r := range results {
 		if r.Target != nil {
@@ -151,10 +151,10 @@ func logResults(logger logger.Interface, all []*artifactselector.Candidate, resu
 		}
 	}
 
-	op := func(c *artifactselector.Candidate) string {
+	op := func(c *selector.Candidate) string {
 		if e, exists := hash[c.Hash()]; exists {
 			if e != nil {
-				if _, ok := e.(*artifactselector.ImmutableError); ok {
+				if _, ok := e.(*selector.ImmutableError); ok {
 					return actionMarkImmutable
 				}
 				return actionMarkError
@@ -202,7 +202,7 @@ func logResults(logger logger.Interface, all []*artifactselector.Candidate, resu
 	}
 }
 
-func arn(art *artifactselector.Candidate) string {
+func arn(art *selector.Candidate) string {
 	return fmt.Sprintf("%s/%s:%s", art.Namespace, art.Repository, art.Digest)
 }
 
@@ -245,7 +245,7 @@ func getParamDryRun(params job.Parameters) (bool, error) {
 	return dryRun, nil
 }
 
-func getParamRepo(params job.Parameters) (*artifactselector.Repository, error) {
+func getParamRepo(params job.Parameters) (*selector.Repository, error) {
 	v, ok := params[ParamRepo]
 	if !ok {
 		return nil, errors.Errorf("missing parameter: %s", ParamRepo)
@@ -256,7 +256,7 @@ func getParamRepo(params job.Parameters) (*artifactselector.Repository, error) {
 		return nil, errors.Errorf("invalid parameter: %s", ParamRepo)
 	}
 
-	repo := &artifactselector.Repository{}
+	repo := &selector.Repository{}
 	if err := repo.FromJSON(repoJSON); err != nil {
 		return nil, errors.Wrap(err, "parse repository from JSON")
 	}
diff --git a/src/pkg/retention/job_test.go b/src/pkg/retention/job_test.go
index 3e6133ea4..5d063d768 100644
--- a/src/pkg/retention/job_test.go
+++ b/src/pkg/retention/job_test.go
@@ -17,13 +17,13 @@ package retention
 import (
 	"context"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
+	"github.com/goharbor/harbor/src/internal/selector/selectors/doublestar"
 	"github.com/goharbor/harbor/src/jobservice/job"
 	"github.com/goharbor/harbor/src/jobservice/logger"
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/doublestar"
 	"github.com/goharbor/harbor/src/pkg/retention/dep"
 	"github.com/goharbor/harbor/src/pkg/retention/policy"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/action"
@@ -60,10 +60,10 @@ func (suite *JobTestSuite) TearDownSuite() {
 func (suite *JobTestSuite) TestRunSuccess() {
 	params := make(job.Parameters)
 	params[ParamDryRun] = false
-	repository := &artifactselector.Repository{
+	repository := &selector.Repository{
 		Namespace: "library",
 		Name:      "harbor",
-		Kind:      artifactselector.Image,
+		Kind:      selector.Image,
 	}
 	repoJSON, err := repository.ToJSON()
 	require.Nil(suite.T(), err)
@@ -112,8 +112,8 @@ func (suite *JobTestSuite) TestRunSuccess() {
 type fakeRetentionClient struct{}
 
 // GetCandidates ...
-func (frc *fakeRetentionClient) GetCandidates(repo *artifactselector.Repository) ([]*artifactselector.Candidate, error) {
-	return []*artifactselector.Candidate{
+func (frc *fakeRetentionClient) GetCandidates(repo *selector.Repository) ([]*selector.Candidate, error) {
+	return []*selector.Candidate{
 		{
 			Namespace:    "library",
 			Repository:   "harbor",
@@ -140,12 +140,12 @@ func (frc *fakeRetentionClient) GetCandidates(repo *artifactselector.Repository)
 }
 
 // Delete ...
-func (frc *fakeRetentionClient) Delete(candidate *artifactselector.Candidate) error {
+func (frc *fakeRetentionClient) Delete(candidate *selector.Candidate) error {
 	return nil
 }
 
 // SubmitTask ...
-func (frc *fakeRetentionClient) DeleteRepository(repo *artifactselector.Repository) error {
+func (frc *fakeRetentionClient) DeleteRepository(repo *selector.Repository) error {
 	return nil
 }
 
diff --git a/src/pkg/retention/launcher.go b/src/pkg/retention/launcher.go
index 92279246f..32d0a1fe0 100644
--- a/src/pkg/retention/launcher.go
+++ b/src/pkg/retention/launcher.go
@@ -18,11 +18,11 @@ import (
 	"fmt"
 	beegoorm "github.com/astaxie/beego/orm"
 	"github.com/goharbor/harbor/src/internal/orm"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"time"
 
+	"github.com/goharbor/harbor/src/internal/selector/selectors/index"
 	"github.com/goharbor/harbor/src/jobservice/job"
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/index"
 
 	cjob "github.com/goharbor/harbor/src/common/job"
 	"github.com/goharbor/harbor/src/common/job/models"
@@ -87,7 +87,7 @@ func NewLauncher(projectMgr project.Manager, repositoryMgr repository.Manager,
 
 type jobData struct {
 	TaskID     int64
-	Repository artifactselector.Repository
+	Repository selector.Repository
 	JobName    string
 	JobParams  map[string]interface{}
 }
@@ -114,9 +114,9 @@ func (l *launcher) Launch(ply *policy.Metadata, executionID int64, isDryRun bool
 	if scope == nil {
 		return 0, launcherError(fmt.Errorf("the scope of policy is nil"))
 	}
-	repositoryRules := make(map[artifactselector.Repository]*lwp.Metadata, 0)
+	repositoryRules := make(map[selector.Repository]*lwp.Metadata, 0)
 	level := scope.Level
-	var allProjects []*artifactselector.Candidate
+	var allProjects []*selector.Candidate
 	var err error
 	if level == "system" {
 		// get projects
@@ -147,12 +147,12 @@ func (l *launcher) Launch(ply *policy.Metadata, executionID int64, isDryRun bool
 				}
 			}
 		case "project":
-			projectCandidates = append(projectCandidates, &artifactselector.Candidate{
+			projectCandidates = append(projectCandidates, &selector.Candidate{
 				NamespaceID: scope.Reference,
 			})
 		}
 
-		var repositoryCandidates []*artifactselector.Candidate
+		var repositoryCandidates []*selector.Candidate
 		// get repositories of projects
 		for _, projectCandidate := range projectCandidates {
 			repositories, err := getRepositories(l.projectMgr, l.repositoryMgr, projectCandidate.NamespaceID, l.chartServerEnabled)
@@ -177,7 +177,7 @@ func (l *launcher) Launch(ply *policy.Metadata, executionID int64, isDryRun bool
 		}
 
 		for _, repositoryCandidate := range repositoryCandidates {
-			reposit := artifactselector.Repository{
+			reposit := selector.Repository{
 				NamespaceID: repositoryCandidate.NamespaceID,
 				Namespace:   repositoryCandidate.Namespace,
 				Name:        repositoryCandidate.Repository,
@@ -218,7 +218,7 @@ func (l *launcher) Launch(ply *policy.Metadata, executionID int64, isDryRun bool
 	return int64(len(jobDatas)), nil
 }
 
-func createJobs(repositoryRules map[artifactselector.Repository]*lwp.Metadata, isDryRun bool) ([]*jobData, error) {
+func createJobs(repositoryRules map[selector.Repository]*lwp.Metadata, isDryRun bool) ([]*jobData, error) {
 	jobDatas := []*jobData{}
 	for repository, policy := range repositoryRules {
 		jobData := &jobData{
@@ -324,14 +324,14 @@ func launcherError(err error) error {
 	return errors.Wrap(err, "launcher")
 }
 
-func getProjects(projectMgr project.Manager) ([]*artifactselector.Candidate, error) {
+func getProjects(projectMgr project.Manager) ([]*selector.Candidate, error) {
 	projects, err := projectMgr.List()
 	if err != nil {
 		return nil, err
 	}
-	var candidates []*artifactselector.Candidate
+	var candidates []*selector.Candidate
 	for _, pro := range projects {
-		candidates = append(candidates, &artifactselector.Candidate{
+		candidates = append(candidates, &selector.Candidate{
 			NamespaceID: pro.ProjectID,
 			Namespace:   pro.Name,
 		})
@@ -340,8 +340,8 @@ func getProjects(projectMgr project.Manager) ([]*artifactselector.Candidate, err
 }
 
 func getRepositories(projectMgr project.Manager, repositoryMgr repository.Manager,
-	projectID int64, chartServerEnabled bool) ([]*artifactselector.Candidate, error) {
-	var candidates []*artifactselector.Candidate
+	projectID int64, chartServerEnabled bool) ([]*selector.Candidate, error) {
+	var candidates []*selector.Candidate
 	/*
 		pro, err := projectMgr.Get(projectID)
 		if err != nil {
@@ -360,7 +360,7 @@ func getRepositories(projectMgr project.Manager, repositoryMgr repository.Manage
 	}
 	for _, r := range imageRepositories {
 		namespace, repo := utils.ParseRepository(r.Name)
-		candidates = append(candidates, &artifactselector.Candidate{
+		candidates = append(candidates, &selector.Candidate{
 			NamespaceID: projectID,
 			Namespace:   namespace,
 			Repository:  repo,
diff --git a/src/pkg/retention/launcher_test.go b/src/pkg/retention/launcher_test.go
index 314a7b507..f0cfe02ed 100644
--- a/src/pkg/retention/launcher_test.go
+++ b/src/pkg/retention/launcher_test.go
@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"github.com/goharbor/harbor/src/common/job"
 	"github.com/goharbor/harbor/src/common/models"
-	_ "github.com/goharbor/harbor/src/pkg/artifactselector/selectors/doublestar"
+	_ "github.com/goharbor/harbor/src/internal/selector/selectors/doublestar"
 	"github.com/goharbor/harbor/src/pkg/project"
 	"github.com/goharbor/harbor/src/pkg/retention/policy"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
diff --git a/src/pkg/retention/policy/action/index/index_test.go b/src/pkg/retention/policy/action/index/index_test.go
index 47d925750..db14805ea 100644
--- a/src/pkg/retention/policy/action/index/index_test.go
+++ b/src/pkg/retention/policy/action/index/index_test.go
@@ -15,7 +15,7 @@
 package index
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
@@ -29,7 +29,7 @@ import (
 type IndexTestSuite struct {
 	suite.Suite
 
-	candidates []*artifactselector.Candidate
+	candidates []*selector.Candidate
 }
 
 // TestIndexEntry is entry of IndexTestSuite
@@ -41,7 +41,7 @@ func TestIndexEntry(t *testing.T) {
 func (suite *IndexTestSuite) SetupSuite() {
 	Register("fakeAction", newFakePerformer)
 
-	suite.candidates = []*artifactselector.Candidate{{
+	suite.candidates = []*selector.Candidate{{
 		Namespace:  "library",
 		Repository: "harbor",
 		Kind:       "image",
@@ -77,9 +77,9 @@ type fakePerformer struct {
 }
 
 // Perform the artifacts
-func (p *fakePerformer) Perform(candidates []*artifactselector.Candidate) (results []*artifactselector.Result, err error) {
+func (p *fakePerformer) Perform(candidates []*selector.Candidate) (results []*selector.Result, err error) {
 	for _, c := range candidates {
-		results = append(results, &artifactselector.Result{
+		results = append(results, &selector.Result{
 			Target: c,
 		})
 	}
diff --git a/src/pkg/retention/policy/action/performer.go b/src/pkg/retention/policy/action/performer.go
index fbe8a7efb..b74b683b3 100644
--- a/src/pkg/retention/policy/action/performer.go
+++ b/src/pkg/retention/policy/action/performer.go
@@ -17,7 +17,7 @@ package action
 import (
 	"github.com/goharbor/harbor/src/common/utils"
 	"github.com/goharbor/harbor/src/common/utils/log"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/immutabletag/match/rule"
 	"github.com/goharbor/harbor/src/pkg/retention/dep"
 )
@@ -37,7 +37,7 @@ type Performer interface {
 	//  Returns:
 	//    []*art.Result : result infos
 	//    error     : common error if any errors occurred
-	Perform(candidates []*artifactselector.Candidate) ([]*artifactselector.Result, error)
+	Perform(candidates []*selector.Candidate) ([]*selector.Result, error)
 }
 
 // PerformerFactory is factory method for creating Performer
@@ -45,13 +45,13 @@ type PerformerFactory func(params interface{}, isDryRun bool) Performer
 
 // retainAction make sure all the candidates will be retained and others will be cleared
 type retainAction struct {
-	all []*artifactselector.Candidate
+	all []*selector.Candidate
 	// Indicate if it is a dry run
 	isDryRun bool
 }
 
 // Perform the action
-func (ra *retainAction) Perform(candidates []*artifactselector.Candidate) (results []*artifactselector.Result, err error) {
+func (ra *retainAction) Perform(candidates []*selector.Candidate) (results []*selector.Result, err error) {
 	retainedShare := make(map[string]bool)
 	immutableShare := make(map[string]bool)
 	for _, c := range candidates {
@@ -71,11 +71,11 @@ func (ra *retainAction) Perform(candidates []*artifactselector.Candidate) (resul
 	if len(ra.all) > 0 {
 		for _, c := range ra.all {
 			if _, ok := retainedShare[c.Hash()]; !ok {
-				result := &artifactselector.Result{
+				result := &selector.Result{
 					Target: c,
 				}
 				if _, ok = immutableShare[c.Hash()]; ok {
-					result.Error = &artifactselector.ImmutableError{}
+					result.Error = &selector.ImmutableError{}
 				} else {
 					if !ra.isDryRun {
 						if err := dep.DefaultClient.Delete(c); err != nil {
@@ -91,11 +91,11 @@ func (ra *retainAction) Perform(candidates []*artifactselector.Candidate) (resul
 	return
 }
 
-func isImmutable(c *artifactselector.Candidate) bool {
+func isImmutable(c *selector.Candidate) bool {
 	projectID := c.NamespaceID
 	repo := c.Repository
 	_, repoName := utils.ParseRepository(repo)
-	matched, err := rule.NewRuleMatcher().Match(projectID, artifactselector.Candidate{
+	matched, err := rule.NewRuleMatcher().Match(projectID, selector.Candidate{
 		Repository:  repoName,
 		Tags:        c.Tags,
 		NamespaceID: projectID,
@@ -110,7 +110,7 @@ func isImmutable(c *artifactselector.Candidate) bool {
 // NewRetainAction is factory method for RetainAction
 func NewRetainAction(params interface{}, isDryRun bool) Performer {
 	if params != nil {
-		if all, ok := params.([]*artifactselector.Candidate); ok {
+		if all, ok := params.([]*selector.Candidate); ok {
 			return &retainAction{
 				all:      all,
 				isDryRun: isDryRun,
@@ -119,7 +119,7 @@ func NewRetainAction(params interface{}, isDryRun bool) Performer {
 	}
 
 	return &retainAction{
-		all:      make([]*artifactselector.Candidate, 0),
+		all:      make([]*selector.Candidate, 0),
 		isDryRun: isDryRun,
 	}
 }
diff --git a/src/pkg/retention/policy/action/performer_test.go b/src/pkg/retention/policy/action/performer_test.go
index 8fb024aab..54783065a 100644
--- a/src/pkg/retention/policy/action/performer_test.go
+++ b/src/pkg/retention/policy/action/performer_test.go
@@ -16,7 +16,7 @@ package action
 
 import (
 	"github.com/goharbor/harbor/src/common/dao"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/immutabletag"
 	"testing"
 	"time"
@@ -34,7 +34,7 @@ type TestPerformerSuite struct {
 	suite.Suite
 
 	oldClient dep.Client
-	all       []*artifactselector.Candidate
+	all       []*selector.Candidate
 }
 
 // TestPerformer is the entry of the TestPerformerSuite
@@ -44,7 +44,7 @@ func TestPerformer(t *testing.T) {
 
 // SetupSuite ...
 func (suite *TestPerformerSuite) SetupSuite() {
-	suite.all = []*artifactselector.Candidate{
+	suite.all = []*selector.Candidate{
 		{
 			Namespace:  "library",
 			Repository: "harbor",
@@ -81,7 +81,7 @@ func (suite *TestPerformerSuite) TestPerform() {
 		all: suite.all,
 	}
 
-	candidates := []*artifactselector.Candidate{
+	candidates := []*selector.Candidate{
 		{
 			Namespace:  "library",
 			Repository: "harbor",
@@ -103,7 +103,7 @@ func (suite *TestPerformerSuite) TestPerform() {
 
 // TestPerform tests Perform action
 func (suite *TestPerformerSuite) TestPerformImmutable() {
-	all := []*artifactselector.Candidate{
+	all := []*selector.Candidate{
 		{
 			NamespaceID: 1,
 			Namespace:   "library",
@@ -177,7 +177,7 @@ func (suite *TestPerformerSuite) TestPerformImmutable() {
 		assert.NoError(suite.T(), immutabletag.ImmuCtr.DeleteImmutableRule(imid))
 	}()
 
-	candidates := []*artifactselector.Candidate{
+	candidates := []*selector.Candidate{
 		{
 			NamespaceID: 1,
 			Namespace:   "library",
@@ -200,7 +200,7 @@ func (suite *TestPerformerSuite) TestPerformImmutable() {
 			require.Equal(suite.T(), "dev", r.Target.Tags[0])
 		} else if r.Target.Digest == "d2" {
 			require.Error(suite.T(), r.Error)
-			require.IsType(suite.T(), (*artifactselector.ImmutableError)(nil), r.Error)
+			require.IsType(suite.T(), (*selector.ImmutableError)(nil), r.Error)
 		} else {
 			require.Fail(suite.T(), "should not delete "+r.Target.Hash())
 		}
@@ -213,16 +213,16 @@ func (suite *TestPerformerSuite) TestPerformImmutable() {
 type fakeRetentionClient struct{}
 
 // GetCandidates ...
-func (frc *fakeRetentionClient) GetCandidates(repo *artifactselector.Repository) ([]*artifactselector.Candidate, error) {
+func (frc *fakeRetentionClient) GetCandidates(repo *selector.Repository) ([]*selector.Candidate, error) {
 	return nil, errors.New("not implemented")
 }
 
 // Delete ...
-func (frc *fakeRetentionClient) Delete(candidate *artifactselector.Candidate) error {
+func (frc *fakeRetentionClient) Delete(candidate *selector.Candidate) error {
 	return nil
 }
 
 // DeleteRepository ...
-func (frc *fakeRetentionClient) DeleteRepository(repo *artifactselector.Repository) error {
+func (frc *fakeRetentionClient) DeleteRepository(repo *selector.Repository) error {
 	panic("implement me")
 }
diff --git a/src/pkg/retention/policy/alg/or/processor.go b/src/pkg/retention/policy/alg/or/processor.go
index bd404c896..e5dbb72ae 100644
--- a/src/pkg/retention/policy/alg/or/processor.go
+++ b/src/pkg/retention/policy/alg/or/processor.go
@@ -15,7 +15,7 @@
 package or
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"sync"
 
 	"github.com/goharbor/harbor/src/common/utils/log"
@@ -29,7 +29,7 @@ import (
 type processor struct {
 	// keep evaluator and its related selector if existing
 	// attentions here, the selectors can be empty/nil, that means match all "**"
-	evaluators map[*rule.Evaluator][]artifactselector.Selector
+	evaluators map[*rule.Evaluator][]selector.Selector
 	// action performer
 	performers map[string]action.Performer
 }
@@ -37,7 +37,7 @@ type processor struct {
 // New processor
 func New(parameters []*alg.Parameter) alg.Processor {
 	p := &processor{
-		evaluators: make(map[*rule.Evaluator][]artifactselector.Selector),
+		evaluators: make(map[*rule.Evaluator][]selector.Selector),
 		performers: make(map[string]action.Performer),
 	}
 
@@ -59,10 +59,10 @@ func New(parameters []*alg.Parameter) alg.Processor {
 }
 
 // Process the candidates with the rules
-func (p *processor) Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Result, error) {
+func (p *processor) Process(artifacts []*selector.Candidate) ([]*selector.Result, error) {
 	if len(artifacts) == 0 {
 		log.Debug("no artifacts to retention")
-		return make([]*artifactselector.Result, 0), nil
+		return make([]*selector.Result, 0), nil
 	}
 
 	var (
@@ -75,7 +75,7 @@ func (p *processor) Process(artifacts []*artifactselector.Candidate) ([]*artifac
 	// for sync
 	type chanItem struct {
 		action    string
-		processed []*artifactselector.Candidate
+		processed []*selector.Candidate
 	}
 
 	resChan := make(chan *chanItem, 1)
@@ -124,9 +124,9 @@ func (p *processor) Process(artifacts []*artifactselector.Candidate) ([]*artifac
 	for eva, selectors := range p.evaluators {
 		var evaluator = *eva
 
-		go func(evaluator rule.Evaluator, selectors []artifactselector.Selector) {
+		go func(evaluator rule.Evaluator, selectors []selector.Selector) {
 			var (
-				processed []*artifactselector.Candidate
+				processed []*selector.Candidate
 				err       error
 			)
 
@@ -173,7 +173,7 @@ func (p *processor) Process(artifacts []*artifactselector.Candidate) ([]*artifac
 		return nil, err
 	}
 
-	results := make([]*artifactselector.Result, 0)
+	results := make([]*selector.Result, 0)
 	// Perform actions
 	for act, hash := range processedCandidates {
 		var attachedErr error
@@ -192,7 +192,7 @@ func (p *processor) Process(artifacts []*artifactselector.Candidate) ([]*artifac
 
 		if attachedErr != nil {
 			for _, c := range cl {
-				results = append(results, &artifactselector.Result{
+				results = append(results, &selector.Result{
 					Target: c,
 					Error:  attachedErr,
 				})
@@ -203,10 +203,10 @@ func (p *processor) Process(artifacts []*artifactselector.Candidate) ([]*artifac
 	return results, nil
 }
 
-type cHash map[string]*artifactselector.Candidate
+type cHash map[string]*selector.Candidate
 
-func (ch cHash) toList() []*artifactselector.Candidate {
-	l := make([]*artifactselector.Candidate, 0)
+func (ch cHash) toList() []*selector.Candidate {
+	l := make([]*selector.Candidate, 0)
 
 	for _, v := range ch {
 		l = append(l, v)
diff --git a/src/pkg/retention/policy/alg/or/processor_test.go b/src/pkg/retention/policy/alg/or/processor_test.go
index 375bfe580..16abb15dc 100644
--- a/src/pkg/retention/policy/alg/or/processor_test.go
+++ b/src/pkg/retention/policy/alg/or/processor_test.go
@@ -17,12 +17,12 @@ package or
 import (
 	"errors"
 	"github.com/goharbor/harbor/src/common/dao"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/doublestar"
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/label"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/doublestar"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/label"
 	"github.com/goharbor/harbor/src/pkg/retention/dep"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/action"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/alg"
@@ -39,7 +39,7 @@ import (
 type ProcessorTestSuite struct {
 	suite.Suite
 
-	all []*artifactselector.Candidate
+	all []*selector.Candidate
 
 	oldClient dep.Client
 }
@@ -52,7 +52,7 @@ func TestProcessor(t *testing.T) {
 // SetupSuite ...
 func (suite *ProcessorTestSuite) SetupSuite() {
 	dao.PrepareTestForPostgresSQL()
-	suite.all = []*artifactselector.Candidate{
+	suite.all = []*selector.Candidate{
 		{
 			Namespace:  "library",
 			Repository: "harbor",
@@ -92,7 +92,7 @@ func (suite *ProcessorTestSuite) TestProcess() {
 	lastxParams[lastx.ParameterX] = 10
 	params = append(params, &alg.Parameter{
 		Evaluator: lastx.New(lastxParams),
-		Selectors: []artifactselector.Selector{
+		Selectors: []selector.Selector{
 			doublestar.New(doublestar.Matches, "*dev*"),
 			label.New(label.With, "L1,L2"),
 		},
@@ -103,7 +103,7 @@ func (suite *ProcessorTestSuite) TestProcess() {
 	latestKParams[latestps.ParameterK] = 10
 	params = append(params, &alg.Parameter{
 		Evaluator: latestps.New(latestKParams),
-		Selectors: []artifactselector.Selector{
+		Selectors: []selector.Selector{
 			label.New(label.With, "L3"),
 		},
 		Performer: perf,
@@ -133,7 +133,7 @@ func (suite *ProcessorTestSuite) TestProcess2() {
 	alwaysParams := make(map[string]rule.Parameter)
 	params = append(params, &alg.Parameter{
 		Evaluator: always.New(alwaysParams),
-		Selectors: []artifactselector.Selector{
+		Selectors: []selector.Selector{
 			doublestar.New(doublestar.Matches, "latest"),
 			label.New(label.With, ""),
 		},
@@ -165,16 +165,16 @@ func (suite *ProcessorTestSuite) TestProcess2() {
 type fakeRetentionClient struct{}
 
 // GetCandidates ...
-func (frc *fakeRetentionClient) GetCandidates(repo *artifactselector.Repository) ([]*artifactselector.Candidate, error) {
+func (frc *fakeRetentionClient) GetCandidates(repo *selector.Repository) ([]*selector.Candidate, error) {
 	return nil, errors.New("not implemented")
 }
 
 // Delete ...
-func (frc *fakeRetentionClient) Delete(candidate *artifactselector.Candidate) error {
+func (frc *fakeRetentionClient) Delete(candidate *selector.Candidate) error {
 	return nil
 }
 
 // DeleteRepository ...
-func (frc *fakeRetentionClient) DeleteRepository(repo *artifactselector.Repository) error {
+func (frc *fakeRetentionClient) DeleteRepository(repo *selector.Repository) error {
 	panic("implement me")
 }
diff --git a/src/pkg/retention/policy/alg/processor.go b/src/pkg/retention/policy/alg/processor.go
index baa63af93..394579373 100644
--- a/src/pkg/retention/policy/alg/processor.go
+++ b/src/pkg/retention/policy/alg/processor.go
@@ -15,7 +15,7 @@
 package alg
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/action"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
 )
@@ -32,7 +32,7 @@ type Processor interface {
 	//  Returns:
 	//    []*art.Result : the processed results
 	//    error         : common error object if any errors occurred
-	Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Result, error)
+	Process(artifacts []*selector.Candidate) ([]*selector.Result, error)
 }
 
 // Parameter for constructing a processor
@@ -42,7 +42,7 @@ type Parameter struct {
 	Evaluator rule.Evaluator
 
 	// Selectors for the rule
-	Selectors []artifactselector.Selector
+	Selectors []selector.Selector
 
 	// Performer for the rule evaluator
 	Performer action.Performer
diff --git a/src/pkg/retention/policy/builder.go b/src/pkg/retention/policy/builder.go
index b5482fe3a..b9a62b4d6 100644
--- a/src/pkg/retention/policy/builder.go
+++ b/src/pkg/retention/policy/builder.go
@@ -16,13 +16,13 @@ package policy
 
 import (
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 
 	index4 "github.com/goharbor/harbor/src/pkg/retention/policy/action/index"
 
 	index3 "github.com/goharbor/harbor/src/pkg/retention/policy/alg/index"
 
-	index2 "github.com/goharbor/harbor/src/pkg/artifactselector/selectors/index"
+	index2 "github.com/goharbor/harbor/src/internal/selector/selectors/index"
 
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule/index"
 
@@ -46,7 +46,7 @@ type Builder interface {
 }
 
 // NewBuilder news a basic builder
-func NewBuilder(all []*artifactselector.Candidate) Builder {
+func NewBuilder(all []*selector.Candidate) Builder {
 	return &basicBuilder{
 		allCandidates: all,
 	}
@@ -54,7 +54,7 @@ func NewBuilder(all []*artifactselector.Candidate) Builder {
 
 // basicBuilder is default implementation of Builder interface
 type basicBuilder struct {
-	allCandidates []*artifactselector.Candidate
+	allCandidates []*selector.Candidate
 }
 
 // Build policy processor from the raw policy
@@ -76,7 +76,7 @@ func (bb *basicBuilder) Build(policy *lwp.Metadata, isDryRun bool) (alg.Processo
 			return nil, errors.Wrap(err, "get action performer by metadata")
 		}
 
-		sl := make([]artifactselector.Selector, 0)
+		sl := make([]selector.Selector, 0)
 		for _, s := range r.TagSelectors {
 			sel, err := index2.Get(s.Kind, s.Decoration, s.Pattern)
 			if err != nil {
diff --git a/src/pkg/retention/policy/builder_test.go b/src/pkg/retention/policy/builder_test.go
index 2974c51e6..88e4359f5 100644
--- a/src/pkg/retention/policy/builder_test.go
+++ b/src/pkg/retention/policy/builder_test.go
@@ -16,7 +16,7 @@ package policy
 
 import (
 	"github.com/goharbor/harbor/src/common/dao"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
@@ -24,7 +24,7 @@ import (
 
 	index2 "github.com/goharbor/harbor/src/pkg/retention/policy/alg/index"
 
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/index"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/index"
 
 	"github.com/goharbor/harbor/src/pkg/retention/dep"
 
@@ -32,9 +32,9 @@ import (
 
 	"github.com/goharbor/harbor/src/pkg/retention/policy/alg/or"
 
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/label"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/label"
 
-	"github.com/goharbor/harbor/src/pkg/artifactselector/selectors/doublestar"
+	"github.com/goharbor/harbor/src/internal/selector/selectors/doublestar"
 
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule/latestps"
 
@@ -55,7 +55,7 @@ import (
 type TestBuilderSuite struct {
 	suite.Suite
 
-	all       []*artifactselector.Candidate
+	all       []*selector.Candidate
 	oldClient dep.Client
 }
 
@@ -67,7 +67,7 @@ func TestBuilder(t *testing.T) {
 // SetupSuite prepares the testing content if needed
 func (suite *TestBuilderSuite) SetupSuite() {
 	dao.PrepareTestForPostgresSQL()
-	suite.all = []*artifactselector.Candidate{
+	suite.all = []*selector.Candidate{
 		{
 			NamespaceID: 1,
 			Namespace:   "library",
@@ -164,21 +164,21 @@ func (suite *TestBuilderSuite) TestBuild() {
 
 type fakeRetentionClient struct{}
 
-func (frc *fakeRetentionClient) DeleteRepository(repo *artifactselector.Repository) error {
+func (frc *fakeRetentionClient) DeleteRepository(repo *selector.Repository) error {
 	panic("implement me")
 }
 
 // GetCandidates ...
-func (frc *fakeRetentionClient) GetCandidates(repo *artifactselector.Repository) ([]*artifactselector.Candidate, error) {
+func (frc *fakeRetentionClient) GetCandidates(repo *selector.Repository) ([]*selector.Candidate, error) {
 	return nil, errors.New("not implemented")
 }
 
 // Delete ...
-func (frc *fakeRetentionClient) Delete(candidate *artifactselector.Candidate) error {
+func (frc *fakeRetentionClient) Delete(candidate *selector.Candidate) error {
 	return nil
 }
 
 // SubmitTask ...
-func (frc *fakeRetentionClient) SubmitTask(taskID int64, repository *artifactselector.Repository, meta *lwp.Metadata) (string, error) {
+func (frc *fakeRetentionClient) SubmitTask(taskID int64, repository *selector.Repository, meta *lwp.Metadata) (string, error) {
 	return "", errors.New("not implemented")
 }
diff --git a/src/pkg/retention/policy/rule/always/evaluator.go b/src/pkg/retention/policy/rule/always/evaluator.go
index b24f786fa..7cd35968d 100644
--- a/src/pkg/retention/policy/rule/always/evaluator.go
+++ b/src/pkg/retention/policy/rule/always/evaluator.go
@@ -15,7 +15,7 @@
 package always
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/action"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
 )
@@ -28,7 +28,7 @@ const (
 type evaluator struct{}
 
 // Process for the "always" Evaluator simply returns the input with no error
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Candidate, error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) ([]*selector.Candidate, error) {
 	return artifacts, nil
 }
 
diff --git a/src/pkg/retention/policy/rule/always/evaluator_test.go b/src/pkg/retention/policy/rule/always/evaluator_test.go
index 5ee67914d..3e767612e 100644
--- a/src/pkg/retention/policy/rule/always/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/always/evaluator_test.go
@@ -15,7 +15,7 @@
 package always
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
@@ -36,7 +36,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 
 func (e *EvaluatorTestSuite) TestProcess() {
 	sut := New(rule.Parameters{})
-	input := []*artifactselector.Candidate{{PushedTime: 0}, {PushedTime: 1}, {PushedTime: 2}, {PushedTime: 3}}
+	input := []*selector.Candidate{{PushedTime: 0}, {PushedTime: 1}, {PushedTime: 2}, {PushedTime: 3}}
 
 	result, err := sut.Process(input)
 
diff --git a/src/pkg/retention/policy/rule/dayspl/evaluator.go b/src/pkg/retention/policy/rule/dayspl/evaluator.go
index ca1dc5364..71bb04ca6 100644
--- a/src/pkg/retention/policy/rule/dayspl/evaluator.go
+++ b/src/pkg/retention/policy/rule/dayspl/evaluator.go
@@ -17,7 +17,7 @@ package dayspl
 import (
 	"fmt"
 	"github.com/goharbor/harbor/src/common/utils"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"time"
 
 	"github.com/goharbor/harbor/src/common/utils/log"
@@ -41,7 +41,7 @@ type evaluator struct {
 	n int
 }
 
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) (result []*artifactselector.Candidate, err error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) (result []*selector.Candidate, err error) {
 	minPullTime := time.Now().UTC().Add(time.Duration(-1*24*e.n) * time.Hour).Unix()
 	for _, a := range artifacts {
 		if a.PulledTime >= minPullTime {
diff --git a/src/pkg/retention/policy/rule/dayspl/evaluator_test.go b/src/pkg/retention/policy/rule/dayspl/evaluator_test.go
index 568c9f87b..3c49b6b27 100644
--- a/src/pkg/retention/policy/rule/dayspl/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/dayspl/evaluator_test.go
@@ -17,7 +17,7 @@ package dayspl
 import (
 	"errors"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/stretchr/testify/assert"
 	"testing"
 	"time"
@@ -54,7 +54,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 
 func (e *EvaluatorTestSuite) TestProcess() {
 	now := time.Now().UTC()
-	data := []*artifactselector.Candidate{
+	data := []*selector.Candidate{
 		{PulledTime: daysAgo(now, 1, time.Hour)},
 		{PulledTime: daysAgo(now, 2, time.Hour)},
 		{PulledTime: daysAgo(now, 3, time.Hour)},
diff --git a/src/pkg/retention/policy/rule/daysps/evaluator.go b/src/pkg/retention/policy/rule/daysps/evaluator.go
index b2a76ba17..b17d55c98 100644
--- a/src/pkg/retention/policy/rule/daysps/evaluator.go
+++ b/src/pkg/retention/policy/rule/daysps/evaluator.go
@@ -17,7 +17,7 @@ package daysps
 import (
 	"fmt"
 	"github.com/goharbor/harbor/src/common/utils"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"time"
 
 	"github.com/goharbor/harbor/src/common/utils/log"
@@ -41,7 +41,7 @@ type evaluator struct {
 	n int
 }
 
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) (result []*artifactselector.Candidate, err error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) (result []*selector.Candidate, err error) {
 	minPushTime := time.Now().UTC().Add(time.Duration(-1*24*e.n) * time.Hour).Unix()
 	for _, a := range artifacts {
 		if a.PushedTime >= minPushTime {
diff --git a/src/pkg/retention/policy/rule/daysps/evaluator_test.go b/src/pkg/retention/policy/rule/daysps/evaluator_test.go
index 71a643485..e694c6fbc 100644
--- a/src/pkg/retention/policy/rule/daysps/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/daysps/evaluator_test.go
@@ -17,7 +17,7 @@ package daysps
 import (
 	"errors"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
@@ -54,7 +54,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 
 func (e *EvaluatorTestSuite) TestProcess() {
 	now := time.Now().UTC()
-	data := []*artifactselector.Candidate{
+	data := []*selector.Candidate{
 		{PushedTime: daysAgo(now, 1, time.Hour)},
 		{PushedTime: daysAgo(now, 2, time.Hour)},
 		{PushedTime: daysAgo(now, 3, time.Hour)},
diff --git a/src/pkg/retention/policy/rule/evaluator.go b/src/pkg/retention/policy/rule/evaluator.go
index 2c466828a..ff3f73e44 100644
--- a/src/pkg/retention/policy/rule/evaluator.go
+++ b/src/pkg/retention/policy/rule/evaluator.go
@@ -15,7 +15,7 @@
 package rule
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 )
 
 // Evaluator defines method of executing rule
@@ -28,7 +28,7 @@ type Evaluator interface {
 	//  Returns:
 	//    []*art.Candidate : matched candidates for next stage
 	//    error            : common error object if any errors occurred
-	Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Candidate, error)
+	Process(artifacts []*selector.Candidate) ([]*selector.Candidate, error)
 
 	// Specify what action is performed to the candidates processed by this evaluator
 	Action() string
diff --git a/src/pkg/retention/policy/rule/index/index_test.go b/src/pkg/retention/policy/rule/index/index_test.go
index 9e9564b26..ff5c69b74 100644
--- a/src/pkg/retention/policy/rule/index/index_test.go
+++ b/src/pkg/retention/policy/rule/index/index_test.go
@@ -15,7 +15,7 @@
 package index
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
@@ -63,7 +63,7 @@ func (suite *IndexTestSuite) TestGet() {
 	require.NoError(suite.T(), err)
 	require.NotNil(suite.T(), evaluator)
 
-	candidates := []*artifactselector.Candidate{{
+	candidates := []*selector.Candidate{{
 		Namespace:  "library",
 		Repository: "harbor",
 		Kind:       "image",
@@ -102,7 +102,7 @@ type fakeEvaluator struct {
 }
 
 // Process rule
-func (e *fakeEvaluator) Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Candidate, error) {
+func (e *fakeEvaluator) Process(artifacts []*selector.Candidate) ([]*selector.Candidate, error) {
 	return artifacts, nil
 }
 
diff --git a/src/pkg/retention/policy/rule/lastx/evaluator.go b/src/pkg/retention/policy/rule/lastx/evaluator.go
index 3aa50b6c7..382eda9ba 100644
--- a/src/pkg/retention/policy/rule/lastx/evaluator.go
+++ b/src/pkg/retention/policy/rule/lastx/evaluator.go
@@ -16,7 +16,7 @@ package lastx
 
 import (
 	"github.com/goharbor/harbor/src/common/utils"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"time"
 
 	"github.com/goharbor/harbor/src/common/utils/log"
@@ -40,7 +40,7 @@ type evaluator struct {
 }
 
 // Process the candidates based on the rule definition
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) (retain []*artifactselector.Candidate, err error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) (retain []*selector.Candidate, err error) {
 	cutoff := time.Now().Add(time.Duration(e.x*-24) * time.Hour)
 	for _, a := range artifacts {
 		if time.Unix(a.PushedTime, 0).UTC().After(cutoff) {
diff --git a/src/pkg/retention/policy/rule/lastx/evaluator_test.go b/src/pkg/retention/policy/rule/lastx/evaluator_test.go
index b30474a70..97fc595e3 100644
--- a/src/pkg/retention/policy/rule/lastx/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/lastx/evaluator_test.go
@@ -2,7 +2,7 @@ package lastx
 
 import (
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 	"time"
 
@@ -38,7 +38,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 
 func (e *EvaluatorTestSuite) TestProcess() {
 	now := time.Now().UTC()
-	data := []*artifactselector.Candidate{
+	data := []*selector.Candidate{
 		{PushedTime: now.Add(time.Duration(1*-24) * time.Hour).Unix()},
 		{PushedTime: now.Add(time.Duration(2*-24) * time.Hour).Unix()},
 		{PushedTime: now.Add(time.Duration(3*-24) * time.Hour).Unix()},
diff --git a/src/pkg/retention/policy/rule/latestk/evaluator.go b/src/pkg/retention/policy/rule/latestk/evaluator.go
index 4c9581903..3a2ce890b 100644
--- a/src/pkg/retention/policy/rule/latestk/evaluator.go
+++ b/src/pkg/retention/policy/rule/latestk/evaluator.go
@@ -16,7 +16,7 @@ package latestk
 
 import (
 	"github.com/goharbor/harbor/src/common/utils"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"sort"
 
 	"github.com/goharbor/harbor/src/common/utils/log"
@@ -40,7 +40,7 @@ type evaluator struct {
 }
 
 // Process the candidates based on the rule definition
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Candidate, error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) ([]*selector.Candidate, error) {
 	// Sort artifacts by their "active time"
 	//
 	// Active time is defined as the selection of c.PulledTime or c.PushedTime,
@@ -81,7 +81,7 @@ func New(params rule.Parameters) rule.Evaluator {
 	}
 }
 
-func activeTime(c *artifactselector.Candidate) int64 {
+func activeTime(c *selector.Candidate) int64 {
 	if c.PulledTime > c.PushedTime {
 		return c.PulledTime
 	}
diff --git a/src/pkg/retention/policy/rule/latestk/evaluator_test.go b/src/pkg/retention/policy/rule/latestk/evaluator_test.go
index 9055ba4f8..42f88f0c1 100644
--- a/src/pkg/retention/policy/rule/latestk/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/latestk/evaluator_test.go
@@ -16,7 +16,7 @@ package latestk
 
 import (
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
@@ -29,11 +29,11 @@ import (
 type EvaluatorTestSuite struct {
 	suite.Suite
 
-	artifacts []*artifactselector.Candidate
+	artifacts []*selector.Candidate
 }
 
 func (e *EvaluatorTestSuite) SetupSuite() {
-	e.artifacts = []*artifactselector.Candidate{
+	e.artifacts = []*selector.Candidate{
 		{PulledTime: 1, PushedTime: 2},
 		{PulledTime: 3, PushedTime: 4},
 		{PulledTime: 6, PushedTime: 5},
diff --git a/src/pkg/retention/policy/rule/latestpl/evaluator.go b/src/pkg/retention/policy/rule/latestpl/evaluator.go
index c4043287a..422a2c40d 100644
--- a/src/pkg/retention/policy/rule/latestpl/evaluator.go
+++ b/src/pkg/retention/policy/rule/latestpl/evaluator.go
@@ -17,7 +17,7 @@ package latestpl
 import (
 	"fmt"
 	"github.com/goharbor/harbor/src/common/utils"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"math"
 	"sort"
 
@@ -41,7 +41,7 @@ type evaluator struct {
 	n int
 }
 
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Candidate, error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) ([]*selector.Candidate, error) {
 	sort.Slice(artifacts, func(i, j int) bool {
 		return artifacts[i].PulledTime > artifacts[j].PulledTime
 	})
diff --git a/src/pkg/retention/policy/rule/latestpl/evaluator_test.go b/src/pkg/retention/policy/rule/latestpl/evaluator_test.go
index 13b873ad7..bcb74de6d 100644
--- a/src/pkg/retention/policy/rule/latestpl/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/latestpl/evaluator_test.go
@@ -17,7 +17,7 @@ package latestpl
 import (
 	"errors"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"math/rand"
 	"testing"
 
@@ -52,7 +52,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 }
 
 func (e *EvaluatorTestSuite) TestProcess() {
-	data := []*artifactselector.Candidate{{PulledTime: 0}, {PulledTime: 1}, {PulledTime: 2}, {PulledTime: 3}, {PulledTime: 4}}
+	data := []*selector.Candidate{{PulledTime: 0}, {PulledTime: 1}, {PulledTime: 2}, {PulledTime: 3}, {PulledTime: 4}}
 	rand.Shuffle(len(data), func(i, j int) {
 		data[i], data[j] = data[j], data[i]
 	})
diff --git a/src/pkg/retention/policy/rule/latestps/evaluator.go b/src/pkg/retention/policy/rule/latestps/evaluator.go
index eacecddb3..796810003 100644
--- a/src/pkg/retention/policy/rule/latestps/evaluator.go
+++ b/src/pkg/retention/policy/rule/latestps/evaluator.go
@@ -17,7 +17,7 @@ package latestps
 import (
 	"fmt"
 	"github.com/goharbor/harbor/src/common/utils"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"math"
 	"sort"
 
@@ -42,7 +42,7 @@ type evaluator struct {
 }
 
 // Process the candidates based on the rule definition
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) ([]*artifactselector.Candidate, error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) ([]*selector.Candidate, error) {
 	// The updated proposal does not guarantee the order artifacts are provided, so we have to sort them first
 	sort.Slice(artifacts, func(i, j int) bool {
 		return artifacts[i].PushedTime > artifacts[j].PushedTime
diff --git a/src/pkg/retention/policy/rule/latestps/evaluator_test.go b/src/pkg/retention/policy/rule/latestps/evaluator_test.go
index 2b25eded0..37cfbe20e 100644
--- a/src/pkg/retention/policy/rule/latestps/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/latestps/evaluator_test.go
@@ -3,7 +3,7 @@ package latestps
 import (
 	"errors"
 	"fmt"
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"math/rand"
 	"testing"
 
@@ -39,7 +39,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 }
 
 func (e *EvaluatorTestSuite) TestProcess() {
-	data := []*artifactselector.Candidate{{PushedTime: 0}, {PushedTime: 1}, {PushedTime: 2}, {PushedTime: 3}, {PushedTime: 4}}
+	data := []*selector.Candidate{{PushedTime: 0}, {PushedTime: 1}, {PushedTime: 2}, {PushedTime: 3}, {PushedTime: 4}}
 	rand.Shuffle(len(data), func(i, j int) {
 		data[i], data[j] = data[j], data[i]
 	})
diff --git a/src/pkg/retention/policy/rule/nothing/evaluator.go b/src/pkg/retention/policy/rule/nothing/evaluator.go
index 0dbada3a9..1884037ea 100644
--- a/src/pkg/retention/policy/rule/nothing/evaluator.go
+++ b/src/pkg/retention/policy/rule/nothing/evaluator.go
@@ -15,7 +15,7 @@
 package nothing
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/action"
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
 )
@@ -28,7 +28,7 @@ const (
 type evaluator struct{}
 
 // Process for the "nothing" Evaluator simply returns the input with no error
-func (e *evaluator) Process(artifacts []*artifactselector.Candidate) (processed []*artifactselector.Candidate, err error) {
+func (e *evaluator) Process(artifacts []*selector.Candidate) (processed []*selector.Candidate, err error) {
 	return processed, err
 }
 
diff --git a/src/pkg/retention/policy/rule/nothing/evaluator_test.go b/src/pkg/retention/policy/rule/nothing/evaluator_test.go
index 19e8b1e2d..64f8b3f2c 100644
--- a/src/pkg/retention/policy/rule/nothing/evaluator_test.go
+++ b/src/pkg/retention/policy/rule/nothing/evaluator_test.go
@@ -15,7 +15,7 @@
 package nothing
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"testing"
 
 	"github.com/goharbor/harbor/src/pkg/retention/policy/rule"
@@ -36,7 +36,7 @@ func (e *EvaluatorTestSuite) TestNew() {
 
 func (e *EvaluatorTestSuite) TestProcess() {
 	sut := New(rule.Parameters{})
-	input := []*artifactselector.Candidate{{PushedTime: 0}, {PushedTime: 1}, {PushedTime: 2}, {PushedTime: 3}}
+	input := []*selector.Candidate{{PushedTime: 0}, {PushedTime: 1}, {PushedTime: 2}, {PushedTime: 3}}
 
 	result, err := sut.Process(input)
 
diff --git a/src/testing/pkg/immutabletag/matcher.go b/src/testing/pkg/immutabletag/matcher.go
index 6b1c52e38..8b4d17f0c 100644
--- a/src/testing/pkg/immutabletag/matcher.go
+++ b/src/testing/pkg/immutabletag/matcher.go
@@ -1,7 +1,7 @@
 package immutabletag
 
 import (
-	"github.com/goharbor/harbor/src/pkg/artifactselector"
+	"github.com/goharbor/harbor/src/internal/selector"
 	"github.com/stretchr/testify/mock"
 )
 
@@ -11,7 +11,7 @@ type FakeMatcher struct {
 }
 
 // Match ...
-func (f *FakeMatcher) Match(pid int64, c artifactselector.Candidate) (bool, error) {
+func (f *FakeMatcher) Match(pid int64, c selector.Candidate) (bool, error) {
 	args := f.Called()
 	return args.Bool(0), args.Error(1)
 }