[RIC-432] - Support Update eNB REST API - use RanListManager in red buttom and get nodeb id list

Change-Id: I105b9145cfc6a71bd419a5b8809080f1d9c77a19
Signed-off-by: Irina <ib565x@intl.att.com>
diff --git a/E2Manager/container-tag.yaml b/E2Manager/container-tag.yaml
index d09274c..06fe115 100644
--- a/E2Manager/container-tag.yaml
+++ b/E2Manager/container-tag.yaml
@@ -1,4 +1,4 @@
 # The Jenkins job requires a tag to build the Docker image.
 # Global-JJB script assumes this file is in the repo root.
 ---
-tag: 5.2.15
+tag: 5.2.16
diff --git a/E2Manager/controllers/nodeb_controller_test.go b/E2Manager/controllers/nodeb_controller_test.go
index a872777..eb7b917 100644
--- a/E2Manager/controllers/nodeb_controller_test.go
+++ b/E2Manager/controllers/nodeb_controller_test.go
@@ -302,7 +302,7 @@
 	return ret
 }
 
-func setupControllerTest(t *testing.T) (*NodebController, *mocks.RnibReaderMock, *mocks.RnibWriterMock, *mocks.RmrMessengerMock, *mocks.E2TInstancesManagerMock) {
+func setupControllerTest(t *testing.T) (*NodebController, *mocks.RnibReaderMock, *mocks.RnibWriterMock, *mocks.RmrMessengerMock, *mocks.E2TInstancesManagerMock, managers.RanListManager) {
 	log := initLog(t)
 	config := configuration.ParseConfiguration()
 
@@ -324,11 +324,11 @@
 
 	handlerProvider := httpmsghandlerprovider.NewIncomingRequestHandlerProvider(log, rmrSender, config, rnibDataService, e2tInstancesManager, rmClient, ranConnectStatusChangeManager, nodebValidator, updateEnbManager, ranListManager)
 	controller := NewNodebController(log, handlerProvider)
-	return controller, readerMock, writerMock, rmrMessengerMock, e2tInstancesManager
+	return controller, readerMock, writerMock, rmrMessengerMock, e2tInstancesManager, ranListManager
 }
 
 func TestShutdownHandlerRnibError(t *testing.T) {
-	controller, _, _, _, e2tInstancesManagerMock := setupControllerTest(t)
+	controller, _, _, _, e2tInstancesManagerMock, _ := setupControllerTest(t)
 	e2tInstancesManagerMock.On("GetE2TAddresses").Return([]string{}, e2managererrors.NewRnibDbError())
 
 	writer := httptest.NewRecorder()
@@ -342,7 +342,7 @@
 }
 
 func TestSetGeneralConfigurationHandlerRnibError(t *testing.T) {
-	controller, readerMock, _, _, _ := setupControllerTest(t)
+	controller, readerMock, _, _, _ , _:= setupControllerTest(t)
 
 	configuration := &entities.GeneralConfiguration{}
 	readerMock.On("GetGeneralConfiguration").Return(configuration, e2managererrors.NewRnibDbError())
@@ -360,7 +360,7 @@
 }
 
 func TestSetGeneralConfigurationInvalidJson(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	writer := httptest.NewRecorder()
 
@@ -375,7 +375,7 @@
 }
 
 func controllerGetNodebTestExecuter(t *testing.T, context *controllerGetNodebTestContext) {
-	controller, readerMock, _, _, _ := setupControllerTest(t)
+	controller, readerMock, _, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 	readerMock.On("GetNodeb", context.ranName).Return(context.nodebInfo, context.rnibError)
 	req, _ := http.NewRequest(http.MethodGet, "/nodeb", nil)
@@ -387,10 +387,16 @@
 }
 
 func controllerGetNodebIdListTestExecuter(t *testing.T, context *controllerGetNodebIdListTestContext) {
-	controller, readerMock, _, _, _ := setupControllerTest(t)
+	controller, readerMock, _, _, _, ranListManager := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 	readerMock.On("GetListNodebIds").Return(context.nodebIdList, context.rnibError)
-	req, _ := http.NewRequest(http.MethodGet, "/nodeb/ids", nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
+	req, _ := http.NewRequest(http.MethodGet, "/nodeb/states", nil)
 	controller.GetNodebIdList(writer, req)
 	assert.Equal(t, context.expectedStatusCode, writer.Result().StatusCode)
 	bodyBytes, _ := ioutil.ReadAll(writer.Body)
@@ -491,7 +497,7 @@
 }
 
 func controllerUpdateEnbTestExecuter(t *testing.T, context *controllerUpdateEnbTestContext) {
-	controller, readerMock, writerMock, _, _ := setupControllerTest(t)
+	controller, readerMock, writerMock, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 
 	r := buildUpdateEnbRequest(context)
@@ -510,7 +516,7 @@
 }
 
 func controllerUpdateGnbTestExecuter(t *testing.T, context *controllerUpdateGnbTestContext) {
-	controller, readerMock, writerMock, _, _ := setupControllerTest(t)
+	controller, readerMock, writerMock, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 
 	activateControllerUpdateGnbMocks(context, readerMock, writerMock)
@@ -545,7 +551,7 @@
 }
 
 func controllerAddEnbTestExecuter(t *testing.T, context *controllerAddEnbTestContext) {
-	controller, readerMock, writerMock, _, _ := setupControllerTest(t)
+	controller, readerMock, writerMock, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 	r := buildAddEnbRequest(context)
 	body, _ := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
@@ -561,7 +567,7 @@
 }
 
 func controllerDeleteEnbTestExecuter(t *testing.T, context *controllerDeleteEnbTestContext) {
-	controller, readerMock, writerMock, _, _ := setupControllerTest(t)
+	controller, readerMock, writerMock, _, _, _ := setupControllerTest(t)
 	readerMock.On("GetNodeb", RanName).Return(context.getNodebInfoResult.nodebInfo, context.getNodebInfoResult.rnibError)
 	if context.getNodebInfoResult.rnibError == nil && context.getNodebInfoResult.nodebInfo.GetNodeType() == entities.Node_ENB {
 		writerMock.On("RemoveEnb", context.getNodebInfoResult.nodebInfo).Return(nil)
@@ -861,7 +867,7 @@
 }
 
 func TestControllerUpdateEnbInvalidRequest(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	writer := httptest.NewRecorder()
 	invalidJson := strings.NewReader("{enb:\"whatever\"")
@@ -1120,7 +1126,7 @@
 }
 
 func TestControllerAddEnbInvalidRequest(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 
 	// Invalid json: attribute name without quotes (should be "cause":).
@@ -1365,20 +1371,8 @@
 	controllerGetNodebIdListTestExecuter(t, &context)
 }
 
-func TestControllerGetNodebIdListInternal(t *testing.T) {
-	var nodebIdList []*entities.NbIdentity
-	context := controllerGetNodebIdListTestContext{
-		nodebIdList:          nodebIdList,
-		rnibError:            common.NewInternalError(errors.New("#reader.GetNodeb - Internal Error")),
-		expectedStatusCode:   http.StatusInternalServerError,
-		expectedJsonResponse: RnibErrorJson,
-	}
-
-	controllerGetNodebIdListTestExecuter(t, &context)
-}
-
 func TestHeaderValidationFailed(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	writer := httptest.NewRecorder()
 
@@ -1395,7 +1389,7 @@
 }
 
 func TestShutdownStatusNoContent(t *testing.T) {
-	controller, readerMock, _, _, e2tInstancesManagerMock := setupControllerTest(t)
+	controller, readerMock, _, _, e2tInstancesManagerMock, _ := setupControllerTest(t)
 	e2tInstancesManagerMock.On("GetE2TAddresses").Return([]string{}, nil)
 	readerMock.On("GetListNodebIds").Return([]*entities.NbIdentity{}, nil)
 
@@ -1406,7 +1400,7 @@
 }
 
 func TestHandleInternalError(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	writer := httptest.NewRecorder()
 	err := e2managererrors.NewInternalError()
@@ -1420,7 +1414,7 @@
 }
 
 func TestHandleCommandAlreadyInProgressError(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 	err := e2managererrors.NewCommandAlreadyInProgressError()
 
@@ -1433,7 +1427,7 @@
 }
 
 func TestHandleRoutingManagerError(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 	writer := httptest.NewRecorder()
 	err := e2managererrors.NewRoutingManagerError()
 
@@ -1446,7 +1440,7 @@
 }
 
 func TestHandleE2TInstanceAbsenceError(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	writer := httptest.NewRecorder()
 	err := e2managererrors.NewE2TInstanceAbsenceError()
@@ -1460,7 +1454,7 @@
 }
 
 func TestValidateHeaders(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	header := http.Header{}
 	header.Set("Content-Type", "application/json")
@@ -1490,7 +1484,7 @@
 }
 
 func TestX2ResetHandleSuccessfulRequestedCause(t *testing.T) {
-	controller, readerMock, _, rmrMessengerMock, _ := setupControllerTest(t)
+	controller, readerMock, _, rmrMessengerMock, _, _ := setupControllerTest(t)
 
 	ranName := "test1"
 	payload := []byte{0x00, 0x07, 0x00, 0x08, 0x00, 0x00, 0x01, 0x00, 0x05, 0x40, 0x01, 0x40}
@@ -1516,7 +1510,7 @@
 }
 
 func TestX2ResetHandleSuccessfulRequestedDefault(t *testing.T) {
-	controller, readerMock, _, rmrMessengerMock, _ := setupControllerTest(t)
+	controller, readerMock, _, rmrMessengerMock, _, _ := setupControllerTest(t)
 
 	ranName := "test1"
 	// o&m intervention
@@ -1543,7 +1537,7 @@
 }
 
 func TestX2ResetHandleFailureInvalidBody(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	ranName := "test1"
 
@@ -1560,7 +1554,7 @@
 }
 
 func TestHandleErrorResponse(t *testing.T) {
-	controller, _, _, _, _ := setupControllerTest(t)
+	controller, _, _, _, _, _ := setupControllerTest(t)
 
 	writer := httptest.NewRecorder()
 	controller.handleErrorResponse(e2managererrors.NewRnibDbError(), writer)
diff --git a/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go b/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go
index 4e4142e..80f1a04 100644
--- a/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go
+++ b/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go
@@ -43,11 +43,12 @@
 	e2tInstancesManager           managers.IE2TInstancesManager
 	rmClient                      clients.IRoutingManagerClient
 	ranConnectStatusChangeManager managers.IRanConnectStatusChangeManager
+	ranListManager                managers.RanListManager
 }
 
 const PartialSuccessDueToRmErrorMessage = "Operation succeeded except for routing manager outbound call"
 
-func NewDeleteAllRequestHandler(logger *logger.Logger, rmrSender *rmrsender.RmrSender, config *configuration.Configuration, rnibDataService services.RNibDataService, e2tInstancesManager managers.IE2TInstancesManager, rmClient clients.IRoutingManagerClient, ranConnectStatusChangeManager managers.IRanConnectStatusChangeManager) *DeleteAllRequestHandler {
+func NewDeleteAllRequestHandler(logger *logger.Logger, rmrSender *rmrsender.RmrSender, config *configuration.Configuration, rnibDataService services.RNibDataService, e2tInstancesManager managers.IE2TInstancesManager, rmClient clients.IRoutingManagerClient, ranConnectStatusChangeManager managers.IRanConnectStatusChangeManager, ranListManager managers.RanListManager) *DeleteAllRequestHandler {
 	return &DeleteAllRequestHandler{
 		logger:                        logger,
 		rnibDataService:               rnibDataService,
@@ -56,6 +57,7 @@
 		e2tInstancesManager:           e2tInstancesManager,
 		rmClient:                      rmClient,
 		ranConnectStatusChangeManager: ranConnectStatusChangeManager,
+		ranListManager:                ranListManager,
 	}
 }
 
@@ -127,13 +129,7 @@
 }
 
 func (h *DeleteAllRequestHandler) updateNodebs(updateCb func(node *entities.NodebInfo) (error, bool)) (error, bool) {
-	nbIdentityList, err := h.rnibDataService.GetListNodebIds()
-
-	if err != nil {
-		h.logger.Errorf("#DeleteAllRequestHandler.updateNodebs - failed to get nodes list from rNib. Error: %s", err)
-		return e2managererrors.NewRnibDbError(), false
-	}
-
+	nbIdentityList := h.ranListManager.GetNbIdentityList()
 	updatedAtLeastOnce := false
 
 	for _, nbIdentity := range nbIdentityList {
diff --git a/E2Manager/handlers/httpmsghandlers/delete_all_request_handler_test.go b/E2Manager/handlers/httpmsghandlers/delete_all_request_handler_test.go
index ef9a765..58971bd 100644
--- a/E2Manager/handlers/httpmsghandlers/delete_all_request_handler_test.go
+++ b/E2Manager/handlers/httpmsghandlers/delete_all_request_handler_test.go
@@ -45,9 +45,9 @@
 const E2TAddress = "10.0.2.15:8989"
 const BaseRMUrl = "http://10.10.2.15:12020/routingmanager"
 
-func setupDeleteAllRequestHandlerTest(t *testing.T) (*DeleteAllRequestHandler, *mocks.RnibReaderMock, *mocks.RnibWriterMock, *mocks.RmrMessengerMock, *mocks.HttpClientMock) {
+func setupDeleteAllRequestHandlerTest(t *testing.T) (*DeleteAllRequestHandler, *mocks.RnibReaderMock, *mocks.RnibWriterMock, *mocks.RmrMessengerMock, *mocks.HttpClientMock, managers.RanListManager) {
 	log := initLog(t)
-	config := &configuration.Configuration{RnibWriter: configuration.RnibWriterConfig{ StateChangeMessageChannel: "RAN_CONNECTION_STATUS_CHANGE"}}
+	config := &configuration.Configuration{RnibWriter: configuration.RnibWriterConfig{StateChangeMessageChannel: "RAN_CONNECTION_STATUS_CHANGE"}}
 	config.BigRedButtonTimeoutSec = 1
 	config.RoutingManager.BaseUrl = BaseRMUrl
 
@@ -64,10 +64,10 @@
 
 	ranListManager := managers.NewRanListManager(log, rnibDataService)
 	ranAlarmService := services.NewRanAlarmService(log, config)
-	ranConnectStatusChangeManager := managers.NewRanConnectStatusChangeManager(log, rnibDataService,ranListManager, ranAlarmService)
+	ranConnectStatusChangeManager := managers.NewRanConnectStatusChangeManager(log, rnibDataService, ranListManager, ranAlarmService)
 
-	handler := NewDeleteAllRequestHandler(log, rmrSender, config, rnibDataService, e2tInstancesManager, rmClient, ranConnectStatusChangeManager)
-	return handler, readerMock, writerMock, rmrMessengerMock, httpClientMock
+	handler := NewDeleteAllRequestHandler(log, rmrSender, config, rnibDataService, e2tInstancesManager, rmClient, ranConnectStatusChangeManager, ranListManager)
+	return handler, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager
 }
 
 func mapE2TAddressesToE2DataList(e2tAddresses []string) models.RoutingManagerE2TDataList {
@@ -97,7 +97,7 @@
 }
 
 func TestGetE2TAddressesFailure(t *testing.T) {
-	h, readerMock, _, _, _ := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, _, _, _ , _:= setupDeleteAllRequestHandlerTest(t)
 	readerMock.On("GetE2TAddresses").Return([]string{}, common.NewInternalError(errors.New("error")))
 	_, err := h.Handle(nil)
 	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
@@ -105,25 +105,39 @@
 }
 
 func TestOneRanGetE2TAddressesEmptyList(t *testing.T) {
-	h, readerMock, writerMock, _, _ := setupDeleteAllRequestHandlerTest(t)
-	readerMock.On("GetE2TAddresses").Return([]string{}, nil)
+	h, readerMock, writerMock, _, _, ranListManager:= setupDeleteAllRequestHandlerTest(t)
+
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
+	readerMock.On("GetE2TAddresses").Return([]string{}, nil)
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 	updatedNb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN,}
 	writerMock.On("UpdateNodebInfo", updatedNb1).Return(nil)
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 	assert.Nil(t, err)
 	readerMock.AssertExpectations(t)
 	writerMock.AssertExpectations(t)
 }
 
 func TestTwoRansGetE2TAddressesEmptyListOneGetNodebFailure(t *testing.T) {
-	h, readerMock, writerMock, _, _ := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, _, _ , ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	readerMock.On("GetE2TAddresses").Return([]string{}, nil)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}, {InventoryName: "RanName_2"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -136,18 +150,25 @@
 
 	var nb2 *entities.NodebInfo
 	readerMock.On("GetNodeb", "RanName_2").Return(nb2, common.NewInternalError(errors.New("error")))
-	_, err := h.Handle(nil)
-	assert.IsType(t,&e2managererrors.RnibDbError{}, err)
+	_, err = h.Handle(nil)
+	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
 	writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 2)
 	writerMock.AssertNumberOfCalls(t, "UpdateNodebInfoOnConnectionStatusInversion", 0)
 	readerMock.AssertExpectations(t)
 }
 
 func TestUpdateNodebInfoOnConnectionStatusInversionFailure(t *testing.T) {
-	h, readerMock, writerMock, _, _ := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, _, _ , ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	readerMock.On("GetE2TAddresses").Return([]string{}, nil)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}, {InventoryName: "RanName_2"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_CONNECTED}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -155,20 +176,26 @@
 	updatedNb1.ConnectionStatus = entities.ConnectionStatus_SHUT_DOWN
 	writerMock.On("UpdateNodebInfoOnConnectionStatusInversion", &updatedNb1, "RanName_1_DISCONNECTED").Return(common.NewInternalError(errors.New("error")))
 
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 
-	assert.IsType(t,&e2managererrors.RnibDbError{}, err)
+	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
 	writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 0)
 	writerMock.AssertNumberOfCalls(t, "UpdateNodebInfoOnConnectionStatusInversion", 1)
 	readerMock.AssertExpectations(t)
 }
 
 func TestTwoRansGetE2TAddressesEmptyListOneUpdateNodebInfoFailure(t *testing.T) {
-	h, readerMock, writerMock, _, _ := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, _, _, ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	readerMock.On("GetE2TAddresses").Return([]string{}, nil)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}, {InventoryName: "RanName_2"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 	updatedNb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN,}
@@ -178,47 +205,25 @@
 	readerMock.On("GetNodeb", "RanName_2").Return(nb2, nil)
 	updatedNb2 := &entities.NodebInfo{RanName: "RanName_2", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN,}
 	writerMock.On("UpdateNodebInfo", updatedNb2).Return(common.NewInternalError(errors.New("error")))
-	_, err := h.Handle(nil)
-	assert.IsType(t,&e2managererrors.RnibDbError{}, err)
-	readerMock.AssertExpectations(t)
-	writerMock.AssertExpectations(t)
-}
-
-func TestOneRanDissociateSucceedsTryShuttingDownFailure(t *testing.T) {
-	h, readerMock, writerMock, _, httpClientMock := setupDeleteAllRequestHandlerTest(t)
-	e2tAddresses := []string{E2TAddress}
-	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
-	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
-	nbIdentityList := []*entities.NbIdentity{}
-	readerMock.On("GetListNodebIds").Return(nbIdentityList, common.NewInternalError(errors.New("error")))
-	_, err := h.Handle(nil)
-	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
-	readerMock.AssertExpectations(t)
-	writerMock.AssertExpectations(t)
-}
-
-func TestOneRanDissociateFailsTryShuttingDownFailure(t *testing.T) {
-	h, readerMock, writerMock, _, httpClientMock := setupDeleteAllRequestHandlerTest(t)
-	e2tAddresses := []string{E2TAddress}
-
-	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
-	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, false)
-	nbIdentityList := []*entities.NbIdentity{}
-	readerMock.On("GetListNodebIds").Return(nbIdentityList, common.NewInternalError(errors.New("error")))
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
 	readerMock.AssertExpectations(t)
 	writerMock.AssertExpectations(t)
 }
 
 func TestOneRanWithStateShutDown(t *testing.T) {
-	h, readerMock, writerMock, rmrMessengerMock, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 	readerMock.On("GetE2TAddresses").Return([]string{E2TAddress}, nil)
@@ -233,7 +238,7 @@
 	mbuf := rmrCgo.NewMBuf(rmrMessage.MsgType, len(rmrMessage.Payload), rmrMessage.RanName, &rmrMessage.Payload, &rmrMessage.XAction, rmrMessage.GetMsgSrc())
 	rmrMessengerMock.On("SendMsg", mbuf, true).Return(mbuf, nil)
 
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 
 	assert.Nil(t, err)
 	rmrMessengerMock.AssertCalled(t, "SendMsg", mbuf, true)
@@ -242,13 +247,18 @@
 }
 
 func TestOneRanShutDown(t *testing.T) {
-	h, readerMock, writerMock, _, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, _, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
 	e2tAddresses := []string{}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUTTING_DOWN}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -257,7 +267,7 @@
 
 	readerMock.On("GetE2TAddresses").Return([]string{E2TAddress}, nil)
 
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 
 	assert.Nil(t, err)
 	readerMock.AssertExpectations(t)
@@ -265,13 +275,19 @@
 }
 
 func TestOneRanTryShuttingDownSucceedsClearFails(t *testing.T) {
-	h, readerMock, writerMock, _, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, _, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_CONNECTED, AssociatedE2TInstanceAddress: E2TAddress}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -284,20 +300,26 @@
 
 	readerMock.On("GetE2TAddresses").Return([]string{E2TAddress}, nil)
 	readerMock.On("GetE2TInstances", []string{E2TAddress}).Return([]*entities.E2TInstance{}, common.NewInternalError(errors.New("error")))
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
 	readerMock.AssertExpectations(t)
 	writerMock.AssertExpectations(t)
 }
 
 func TestOneRanTryShuttingDownUpdateNodebError(t *testing.T) {
-	h, readerMock, writerMock, _, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, _, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_CONNECTED, AssociatedE2TInstanceAddress: E2TAddress}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -308,7 +330,7 @@
 	nodeb1NotAssociated := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUTTING_DOWN,}
 	writerMock.On("UpdateNodebInfo", nodeb1NotAssociated).Return(common.NewInternalError(errors.New("error")))
 
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 
 	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
 	readerMock.AssertExpectations(t)
@@ -316,12 +338,19 @@
 }
 
 func TestOneRanTryShuttingDownSucceedsClearSucceedsRmrSendFails(t *testing.T) {
-	h, readerMock, writerMock, rmrMessengerMock, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_CONNECTED, AssociatedE2TInstanceAddress: E2TAddress}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -342,7 +371,7 @@
 	rmrMessage := models.RmrMessage{MsgType: rmrCgo.RIC_SCTP_CLEAR_ALL}
 	mbuf := rmrCgo.NewMBuf(rmrMessage.MsgType, len(rmrMessage.Payload), rmrMessage.RanName, &rmrMessage.Payload, &rmrMessage.XAction, rmrMessage.GetMsgSrc())
 	rmrMessengerMock.On("SendMsg", mbuf, true).Return(mbuf, e2managererrors.NewRmrError())
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 	assert.IsType(t, &e2managererrors.RmrError{}, err)
 	rmrMessengerMock.AssertCalled(t, "SendMsg", mbuf, true)
 	readerMock.AssertExpectations(t)
@@ -350,12 +379,19 @@
 }
 
 func testTwoRansTryShuttingDownSucceedsClearSucceedsRmrSucceedsAllRansAreShutdown(t *testing.T, partial bool) {
-	h, readerMock, writerMock, rmrMessengerMock, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
+
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, !partial)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}, {InventoryName: "RanName_2"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN}
 	nb2 := &entities.NodebInfo{RanName: "RanName_2", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
@@ -393,13 +429,18 @@
 }
 
 func TestOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDownUpdateFailure(t *testing.T) {
-	h, readerMock, writerMock, rmrMessengerMock, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	nb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUTTING_DOWN, AssociatedE2TInstanceAddress: E2TAddress}
 	readerMock.On("GetNodeb", "RanName_1").Return(nb1, nil)
 
@@ -425,12 +466,12 @@
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 	readerMock.On("GetNodeb", "RanName_1").Return(updatedNb1, nil)
 
-	updatedNb2 := *nb1//&entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN,}
+	updatedNb2 := *nb1 //&entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN,}
 	updatedNb2.ConnectionStatus = entities.ConnectionStatus_SHUT_DOWN
 	updatedNb2.AssociatedE2TInstanceAddress = ""
 	writerMock.On("UpdateNodebInfo", &updatedNb2).Return(common.NewInternalError(errors.New("error")))
 
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 
 	assert.IsType(t, &e2managererrors.RnibDbError{}, err)
 	rmrMessengerMock.AssertCalled(t, "SendMsg", mbuf, true)
@@ -439,12 +480,18 @@
 }
 
 func testOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDown(t *testing.T, partial bool) {
-	h, readerMock, writerMock, rmrMessengerMock, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
 	e2tAddresses := []string{E2TAddress}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, !partial)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	updatedNb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUTTING_DOWN,}
 	writerMock.On("UpdateNodebInfo", updatedNb1).Return(nil)
 	readerMock.On("GetE2TAddresses").Return([]string{E2TAddress}, nil)
@@ -462,7 +509,7 @@
 	readerMock.On("GetNodeb", "RanName_1").Return(updatedNb1, nil)
 	updatedNb2 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUT_DOWN,}
 	writerMock.On("UpdateNodebInfo", updatedNb2).Return(nil)
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 	assert.Nil(t, err)
 	rmrMessengerMock.AssertCalled(t, "SendMsg", mbuf, true)
 	readerMock.AssertExpectations(t)
@@ -470,22 +517,27 @@
 	writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 3)
 }
 
-func TestOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDownSuccess (t *testing.T) {
+func TestOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDownSuccess(t *testing.T) {
 	testOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDown(t, false)
 }
 
-func TestOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDownPartialSuccess (t *testing.T) {
+func TestOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDownPartialSuccess(t *testing.T) {
 	testOneRanTryShuttingDownSucceedsClearSucceedsRmrSucceedsRanStatusIsShuttingDown(t, true)
 }
 
 func TestSuccessTwoE2TInstancesSixRans(t *testing.T) {
-	h, readerMock, writerMock, rmrMessengerMock, httpClientMock := setupDeleteAllRequestHandlerTest(t)
+	h, readerMock, writerMock, rmrMessengerMock, httpClientMock, ranListManager := setupDeleteAllRequestHandlerTest(t)
 	e2tAddresses := []string{E2TAddress, E2TAddress2}
 	readerMock.On("GetE2TAddresses").Return(e2tAddresses, nil)
 	mockHttpClientDissociateAllRans(httpClientMock, e2tAddresses, true)
 	nbIdentityList := []*entities.NbIdentity{{InventoryName: "RanName_1"}, {InventoryName: "RanName_2"}, {InventoryName: "RanName_3"}, {InventoryName: "RanName_4"}, {InventoryName: "RanName_5"}, {InventoryName: "RanName_6"}}
 	readerMock.On("GetListNodebIds").Return(nbIdentityList, nil)
 
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	updatedNb1 := &entities.NodebInfo{RanName: "RanName_1", ConnectionStatus: entities.ConnectionStatus_SHUTTING_DOWN,}
 	writerMock.On("UpdateNodebInfo", updatedNb1).Return(nil)
 	updatedNb2 := &entities.NodebInfo{RanName: "RanName_2", ConnectionStatus: entities.ConnectionStatus_SHUTTING_DOWN,}
@@ -540,7 +592,7 @@
 	updatedNb6AfterTimer := *updatedNb6
 	updatedNb6AfterTimer.ConnectionStatus = entities.ConnectionStatus_SHUT_DOWN
 	writerMock.On("UpdateNodebInfo", &updatedNb6AfterTimer).Return(nil)
-	_, err := h.Handle(nil)
+	_, err = h.Handle(nil)
 	assert.Nil(t, err)
 	rmrMessengerMock.AssertCalled(t, "SendMsg", mbuf, true)
 	readerMock.AssertExpectations(t)
diff --git a/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler.go b/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler.go
index 0ab1f74..a6ade7b 100644
--- a/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler.go
+++ b/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler.go
@@ -17,12 +17,11 @@
 //  This source code is part of the near-RT RIC (RAN Intelligent Controller)
 //  platform project (RICP).
 
-
 package httpmsghandlers
 
 import (
-	"e2mgr/e2managererrors"
 	"e2mgr/logger"
+	"e2mgr/managers"
 	"e2mgr/models"
 	"e2mgr/services"
 )
@@ -30,23 +29,20 @@
 type GetNodebIdListRequestHandler struct {
 	rNibDataService services.RNibDataService
 	logger          *logger.Logger
+	ranListManager  managers.RanListManager
 }
 
-func NewGetNodebIdListRequestHandler(logger *logger.Logger, rNibDataService services.RNibDataService) *GetNodebIdListRequestHandler {
+func NewGetNodebIdListRequestHandler(logger *logger.Logger, rNibDataService services.RNibDataService, ranListManager managers.RanListManager) *GetNodebIdListRequestHandler {
 	return &GetNodebIdListRequestHandler{
 		logger:          logger,
 		rNibDataService: rNibDataService,
+		ranListManager:  ranListManager,
 	}
 }
 
 func (handler *GetNodebIdListRequestHandler) Handle(request models.Request) (models.IResponse, error) {
 
-	nodebIdList, err := handler.rNibDataService.GetListNodebIds()
-
-	if err != nil {
-		handler.logger.Errorf("#GetNodebIdListRequestHandler.Handle - Error fetching Nodeb Identity list from rNib: %v", err)
-		return nil, e2managererrors.NewRnibDbError()
-	}
+	nodebIdList := handler.ranListManager.GetNbIdentityList()
 
 	return models.NewGetNodebIdListResponse(nodebIdList), nil
 }
diff --git a/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler_test.go b/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler_test.go
index eb5bae3..6442885 100644
--- a/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler_test.go
+++ b/E2Manager/handlers/httpmsghandlers/get_nodeb_id_list_request_handler_test.go
@@ -22,41 +22,39 @@
 
 import (
 	"e2mgr/configuration"
+	"e2mgr/managers"
 	"e2mgr/mocks"
 	"e2mgr/models"
 	"e2mgr/services"
-	"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
 	"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
-	"github.com/pkg/errors"
 	"github.com/stretchr/testify/assert"
 	"testing"
 )
 
-func setupGetNodebIdListRequestHandlerTest(t *testing.T) (*GetNodebIdListRequestHandler, *mocks.RnibReaderMock) {
+func setupGetNodebIdListRequestHandlerTest(t *testing.T) (*GetNodebIdListRequestHandler, *mocks.RnibReaderMock, managers.RanListManager) {
 	log := initLog(t)
 	config := &configuration.Configuration{RnibRetryIntervalMs: 10, MaxRnibConnectionAttempts: 3}
 	readerMock := &mocks.RnibReaderMock{}
 
 	rnibDataService := services.NewRnibDataService(log, config, readerMock, nil)
-	handler := NewGetNodebIdListRequestHandler(log, rnibDataService)
-	return handler, readerMock
+	ranListManager := managers.NewRanListManager(log, rnibDataService)
+
+	handler := NewGetNodebIdListRequestHandler(log, rnibDataService, ranListManager)
+	return handler, readerMock, ranListManager
 }
 
 func TestHandleGetNodebIdListSuccess(t *testing.T) {
-	handler, readerMock := setupGetNodebIdListRequestHandlerTest(t)
+	handler, readerMock, ranListManager := setupGetNodebIdListRequestHandlerTest(t)
 	var rnibError error
 	readerMock.On("GetListNodebIds").Return([]*entities.NbIdentity{}, rnibError)
+
+	err := ranListManager.InitNbIdentityMap()
+	if err != nil {
+		t.Errorf("Error cannot init identity")
+	}
+
 	response, err := handler.Handle(nil)
 	assert.Nil(t, err)
 	assert.NotNil(t, response)
 	assert.IsType(t, &models.GetNodebIdListResponse{}, response)
 }
-
-func TestHandleGetNodebIdListFailure(t *testing.T) {
-	handler, readerMock := setupGetNodebIdListRequestHandlerTest(t)
-	var nodebIdList []*entities.NbIdentity
-	readerMock.On("GetListNodebIds").Return(nodebIdList, common.NewInternalError(errors.New("#reader.GetListNodebIds - Internal Error")))
-	response, err := handler.Handle(nil)
-	assert.NotNil(t, err)
-	assert.Nil(t, response)
-}
diff --git a/E2Manager/httpserver/http_server.go b/E2Manager/httpserver/http_server.go
index 157f5bd..3ee48ef 100644
--- a/E2Manager/httpserver/http_server.go
+++ b/E2Manager/httpserver/http_server.go
@@ -45,7 +45,7 @@
 	r.HandleFunc("/health", rootController.HandleHealthCheckRequest).Methods(http.MethodGet)
 
 	rr := r.PathPrefix("/nodeb").Subrouter()
-	rr.HandleFunc("/ids", nodebController.GetNodebIdList).Methods(http.MethodGet)
+	rr.HandleFunc("/states", nodebController.GetNodebIdList).Methods(http.MethodGet)
 	rr.HandleFunc("/{ranName}", nodebController.GetNodeb).Methods(http.MethodGet)
 	rr.HandleFunc("/enb", nodebController.AddEnb).Methods(http.MethodPost)
 	rr.HandleFunc("/enb/{ranName}", nodebController.DeleteEnb).Methods(http.MethodDelete)
diff --git a/E2Manager/httpserver/http_server_test.go b/E2Manager/httpserver/http_server_test.go
index fbaecbe..0a98999 100644
--- a/E2Manager/httpserver/http_server_test.go
+++ b/E2Manager/httpserver/http_server_test.go
@@ -55,7 +55,7 @@
 func TestRouteGetNodebIds(t *testing.T) {
 	router, _, nodebControllerMock, _ := setupRouterAndMocks()
 
-	req, err := http.NewRequest("GET", "/v1/nodeb/ids", nil)
+	req, err := http.NewRequest("GET", "/v1/nodeb/states", nil)
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/E2Manager/managers/ran_list_manager.go b/E2Manager/managers/ran_list_manager.go
index 26de59d..d6dbd8e 100644
--- a/E2Manager/managers/ran_list_manager.go
+++ b/E2Manager/managers/ran_list_manager.go
@@ -102,7 +102,7 @@
 }
 
 func (m *ranListManagerInstance) GetNbIdentityList() []*entities.NbIdentity {
-	nbIds := make([]*entities.NbIdentity, len(m.nbIdentityMap))
+	nbIds := make([]*entities.NbIdentity, 0, len(m.nbIdentityMap))
 	for _, v := range m.nbIdentityMap {
 		nbIds = append(nbIds, v)
 	}
diff --git a/E2Manager/providers/httpmsghandlerprovider/incoming_request_handler_provider.go b/E2Manager/providers/httpmsghandlerprovider/incoming_request_handler_provider.go
index e52aab7..77128c5 100644
--- a/E2Manager/providers/httpmsghandlerprovider/incoming_request_handler_provider.go
+++ b/E2Manager/providers/httpmsghandlerprovider/incoming_request_handler_provider.go
@@ -63,11 +63,11 @@
 func initRequestHandlerMap(logger *logger.Logger, rmrSender *rmrsender.RmrSender, config *configuration.Configuration, rNibDataService services.RNibDataService, e2tInstancesManager managers.IE2TInstancesManager, rmClient clients.IRoutingManagerClient, ranConnectStatusChangeManager managers.IRanConnectStatusChangeManager, nodebValidator *managers.NodebValidator, updateEnbManager managers.IUpdateNodebManager, ranListManager managers.RanListManager) map[IncomingRequest]httpmsghandlers.RequestHandler {
 
 	return map[IncomingRequest]httpmsghandlers.RequestHandler{
-		ShutdownRequest:                httpmsghandlers.NewDeleteAllRequestHandler(logger, rmrSender, config, rNibDataService, e2tInstancesManager, rmClient, ranConnectStatusChangeManager),
+		ShutdownRequest:                httpmsghandlers.NewDeleteAllRequestHandler(logger, rmrSender, config, rNibDataService, e2tInstancesManager, rmClient, ranConnectStatusChangeManager, ranListManager),
 		ResetRequest:                   httpmsghandlers.NewX2ResetRequestHandler(logger, rmrSender, rNibDataService),
 		SetGeneralConfigurationRequest: httpmsghandlers.NewSetGeneralConfigurationHandler(logger, rNibDataService),
 		GetNodebRequest:                httpmsghandlers.NewGetNodebRequestHandler(logger, rNibDataService),
-		GetNodebIdListRequest:          httpmsghandlers.NewGetNodebIdListRequestHandler(logger, rNibDataService),
+		GetNodebIdListRequest:          httpmsghandlers.NewGetNodebIdListRequestHandler(logger, rNibDataService, ranListManager),
 		GetE2TInstancesRequest:         httpmsghandlers.NewGetE2TInstancesRequestHandler(logger, e2tInstancesManager),
 		UpdateGnbRequest:               httpmsghandlers.NewUpdateGnbRequestHandler(logger, rNibDataService),
 		UpdateEnbRequest:               httpmsghandlers.NewUpdateNodebRequestHandler(logger, rNibDataService, updateEnbManager),