[RIC-431] REDESIGN - Add RanListManager methods | Add/Update RnibWriter methods

[ric-plt/e2mgr.git] / E2Manager / handlers / rmrmsghandlers / e2_setup_request_notification_handler_test.go

diff --git a/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler_test.go b/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler_test.go
index 41ddcca..2e2c693 100644 (file)
--- a/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler_test.go
+++ b/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler_test.go
@@ -32,7 +32,6 @@ import (
        "errors"
        "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/golang/protobuf/ptypes/wrappers"
        "github.com/stretchr/testify/assert"
        "github.com/stretchr/testify/mock"
        "io/ioutil"
@@ -41,16 +40,17 @@ import (
 )
 
 const (
-       prefix                                 = "10.0.2.15:9999|"
-       e2tInstanceFullAddress                 = "10.0.2.15:9999"
-       nodebRanName                           = "gnb:310-410-b5c67788"
-       GnbSetupRequestXmlPath                 = "../../tests/resources/setupRequest_gnb.xml"
-       EnGnbSetupRequestXmlPath               = "../../tests/resources/setupRequest_en-gNB.xml"
-       NgEnbSetupRequestXmlPath               = "../../tests/resources/setupRequest_ng-eNB.xml"
-       EnbSetupRequestXmlPath                 = "../../tests/resources/setupRequest_enb.xml"
-       GnbWithoutFunctionsSetupRequestXmlPath = "../../tests/resources/setupRequest_gnb_without_functions.xml"
-       E2SetupFailureResponseWithMiscCause    = "<E2AP-PDU><unsuccessfulOutcome><procedureCode>1</procedureCode><criticality><reject/></criticality><value><E2setupFailure><protocolIEs><E2setupFailureIEs><id>1</id><criticality><ignore/></criticality><value><Cause><misc><om-intervention/></misc></Cause></value></E2setupFailureIEs><E2setupFailureIEs><id>31</id><criticality><ignore/></criticality><value><TimeToWait><v60s/></TimeToWait></value></E2setupFailureIEs></protocolIEs></E2setupFailure></value></unsuccessfulOutcome></E2AP-PDU>"
+       e2tInstanceFullAddress                   = "10.0.2.15:9999"
+       e2SetupMsgPrefix                         = e2tInstanceFullAddress + "|"
+       nodebRanName                             = "gnb:310-410-b5c67788"
+       GnbSetupRequestXmlPath                   = "../../tests/resources/setupRequest_gnb.xml"
+       EnGnbSetupRequestXmlPath                 = "../../tests/resources/setupRequest_en-gNB.xml"
+       NgEnbSetupRequestXmlPath                 = "../../tests/resources/setupRequest_ng-eNB.xml"
+       EnbSetupRequestXmlPath                   = "../../tests/resources/setupRequest_enb.xml"
+       GnbWithoutFunctionsSetupRequestXmlPath   = "../../tests/resources/setupRequest_gnb_without_functions.xml"
+       E2SetupFailureResponseWithMiscCause      = "<E2AP-PDU><unsuccessfulOutcome><procedureCode>1</procedureCode><criticality><reject/></criticality><value><E2setupFailure><protocolIEs><E2setupFailureIEs><id>1</id><criticality><ignore/></criticality><value><Cause><misc><om-intervention/></misc></Cause></value></E2setupFailureIEs><E2setupFailureIEs><id>31</id><criticality><ignore/></criticality><value><TimeToWait><v60s/></TimeToWait></value></E2setupFailureIEs></protocolIEs></E2setupFailure></value></unsuccessfulOutcome></E2AP-PDU>"
        E2SetupFailureResponseWithTransportCause = "<E2AP-PDU><unsuccessfulOutcome><procedureCode>1</procedureCode><criticality><reject/></criticality><value><E2setupFailure><protocolIEs><E2setupFailureIEs><id>1</id><criticality><ignore/></criticality><value><Cause><transport><transport-resource-unavailable/></transport></Cause></value></E2setupFailureIEs><E2setupFailureIEs><id>31</id><criticality><ignore/></criticality><value><TimeToWait><v60s/></TimeToWait></value></E2setupFailureIEs></protocolIEs></E2setupFailure></value></unsuccessfulOutcome></E2AP-PDU>"
+       StateChangeMessageChannel                = "RAN_CONNECTION_STATUS_CHANGE"
 )
 
 func readXmlFile(t *testing.T, xmlPath string) []byte {
@@ -69,7 +69,7 @@ func readXmlFile(t *testing.T, xmlPath string) []byte {
 func TestParseGnbSetupRequest_Success(t *testing.T) {
        xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
        handler, _, _, _, _, _ := initMocks(t)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        request, _, err := handler.parseSetupRequest(append(prefBytes, xmlGnb...))
        assert.Equal(t, "02F829", request.GetPlmnId())
        assert.Equal(t, "001100000011000000110000", request.GetNbId())
@@ -79,7 +79,7 @@ func TestParseGnbSetupRequest_Success(t *testing.T) {
 func TestParseEnGnbSetupRequest_Success(t *testing.T) {
        enGnbXml := readXmlFile(t, EnGnbSetupRequestXmlPath)
        handler, _, _, _, _, _ := initMocks(t)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        request, _, err := handler.parseSetupRequest(append(prefBytes, enGnbXml...))
        assert.Equal(t, "131014", request.GetPlmnId())
        assert.Equal(t, "11000101110001101100011111111000", request.GetNbId())
@@ -89,7 +89,7 @@ func TestParseEnGnbSetupRequest_Success(t *testing.T) {
 func TestParseNgEnbSetupRequest_Success(t *testing.T) {
        ngEnbXml := readXmlFile(t, NgEnbSetupRequestXmlPath)
        handler, _, _, _, _, _ := initMocks(t)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        request, _, err := handler.parseSetupRequest(append(prefBytes, ngEnbXml...))
        assert.Equal(t, "131014", request.GetPlmnId())
        assert.Equal(t, "101010101010101010", request.GetNbId())
@@ -99,7 +99,7 @@ func TestParseNgEnbSetupRequest_Success(t *testing.T) {
 func TestParseEnbSetupRequest_Success(t *testing.T) {
        enbXml := readXmlFile(t, EnbSetupRequestXmlPath)
        handler, _, _, _, _, _ := initMocks(t)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        request, _, err := handler.parseSetupRequest(append(prefBytes, enbXml...))
        assert.Equal(t, "6359AB", request.GetPlmnId())
        assert.Equal(t, "101010101010101010", request.GetNbId())
@@ -118,7 +118,7 @@ func TestParseSetupRequest_PipFailure(t *testing.T) {
 
 func TestParseSetupRequest_UnmarshalFailure(t *testing.T) {
        handler, _, _, _, _, _ := initMocks(t)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        request, _, err := handler.parseSetupRequest(append(prefBytes, 1, 2, 3))
        assert.Nil(t, request)
        assert.NotNil(t, err)
@@ -129,7 +129,7 @@ func TestE2SetupRequestNotificationHandler_GetGeneralConfigurationFailure(t *tes
        xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{}, common.NewInternalError(errors.New("some error")))
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xmlGnb...)}
        handler.Handle(notificationRequest)
        rmrMessengerMock.AssertNotCalled(t, "SendMsg")
        e2tInstancesManagerMock.AssertNotCalled(t, "GetE2TInstance")
@@ -140,7 +140,7 @@ func TestE2SetupRequestNotificationHandler_GetGeneralConfigurationFailure(t *tes
 
 func getMbuf(msgType int, payloadStr string, request *models.NotificationRequest) *rmrCgo.MBuf {
        payload := []byte(payloadStr)
-       mbuf := rmrCgo.NewMBuf(msgType, len(payload), nodebRanName,&payload,&request.TransactionId, request.GetMsgSrc() )
+       mbuf := rmrCgo.NewMBuf(msgType, len(payload), nodebRanName, &payload, &request.TransactionId, request.GetMsgSrc())
        return mbuf
 }
 
@@ -148,158 +148,165 @@ func TestE2SetupRequestNotificationHandler_EnableRicFalse(t *testing.T) {
        xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: false}, nil)
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xmlGnb...)}
        mbuf := getMbuf(rmrCgo.RIC_E2_SETUP_FAILURE, E2SetupFailureResponseWithMiscCause, notificationRequest)
        rmrMessengerMock.On("WhSendMsg", mbuf, true).Return(&rmrCgo.MBuf{}, nil)
        handler.Handle(notificationRequest)
-       rmrMessengerMock.AssertCalled(t, "WhSendMsg", mbuf,true )
+       rmrMessengerMock.AssertCalled(t, "WhSendMsg", mbuf, true)
        e2tInstancesManagerMock.AssertNotCalled(t, "GetE2TInstance")
        routingManagerClientMock.AssertNotCalled(t, "AssociateRanToE2TInstance")
        readerMock.AssertNotCalled(t, "GetNodeb")
        writerMock.AssertNotCalled(t, "SaveNodeb")
 }
 
-func TestE2SetupRequestNotificationHandler_HandleNewGnbSuccess(t *testing.T) {
-       xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
-       handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
+
+func TestE2SetupRequestNotificationHandler_HandleNewRanError(t *testing.T) {
+       xml := readXmlFile(t, GnbSetupRequestXmlPath)
+       handler, readerMock, writerMock, _, e2tInstancesManagerMock, _ := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
        var gnb *entities.NodebInfo
-       readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewResourceNotFoundError("Not found"))
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
-       nodebInfo := getExpectedNodebWithFunctionsForNewRan(notificationRequest.Payload)
-       writerMock.On("SaveNodeb", mock.Anything, nodebInfo).Return(nil)
-       routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
-       writerMock.On("UpdateNodebInfo", mock.Anything).Return(nil)
-       e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
-       rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(&rmrCgo.MBuf{}, nil)
+       readerMock.On("GetNodeb", nodebRanName).Return(gnb, common.NewResourceNotFoundError("Not found"))
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xml...)}
+       nodebInfo := getExpectedNodebForNewRan(notificationRequest.Payload)
+       writerMock.On("SaveNodeb", nodebInfo).Return(common.NewInternalError(errors.New("error")))
+       //nbIdentity := &entities.NbIdentity{InventoryName: nodebRanName, GlobalNbId: nodebInfo.GlobalNbId}
+       // TODO: add writerMock.On("AddNbIdentity")
        handler.Handle(notificationRequest)
-       writerMock.AssertCalled(t, "SaveNodeb", mock.Anything, nodebInfo)
-       assertNewNodebSuccessCalls(readerMock, t, e2tInstancesManagerMock, writerMock, routingManagerClientMock, rmrMessengerMock)
+
+       readerMock.AssertExpectations(t)
+       writerMock.AssertExpectations(t)
+       e2tInstancesManagerMock.AssertExpectations(t)
 }
 
-func TestE2SetupRequestNotificationHandler_HandleNewGnbWithoutFunctionsSuccess(t *testing.T) {
-       xmlGnb := readXmlFile(t, GnbWithoutFunctionsSetupRequestXmlPath)
+func testE2SetupRequestNotificationHandler_HandleNewRanSuccess(t *testing.T, xmlPath string) {
+       xml := readXmlFile(t, xmlPath)
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
        var gnb *entities.NodebInfo
-       readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewResourceNotFoundError("Not found"))
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
-       nodebInfo := getExpectedNodebWithFunctionsForNewRan(notificationRequest.Payload)
-       writerMock.On("SaveNodeb", mock.Anything, nodebInfo).Return(nil)
+       readerMock.On("GetNodeb", nodebRanName).Return(gnb, common.NewResourceNotFoundError("Not found"))
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xml...)}
+       nodebInfo := getExpectedNodebForNewRan(notificationRequest.Payload)
+       writerMock.On("SaveNodeb", nodebInfo).Return(nil)
+       //nbIdentity := &entities.NbIdentity{InventoryName: nodebRanName, GlobalNbId: nodebInfo.GlobalNbId}
+       // TODO: add writerMock.On("AddNbIdentity")
+       updatedNodebInfo := *nodebInfo
+       updatedNodebInfo.ConnectionStatus = entities.ConnectionStatus_CONNECTED
+       writerMock.On("UpdateNodebInfoOnConnectionStatusInversion", &updatedNodebInfo, nodebRanName+"_CONNECTED").Return(nil)
        routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
-       writerMock.On("UpdateNodebInfo", mock.Anything).Return(nil)
-       e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
-       var errEmpty error
-       rmrMessage := &rmrCgo.MBuf{}
-       rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(rmrMessage, errEmpty)
+       updatedNodebInfo2 := *nodebInfo
+       updatedNodebInfo2.ConnectionStatus = entities.ConnectionStatus_CONNECTED
+       updatedNodebInfo2.AssociatedE2TInstanceAddress = e2tInstanceFullAddress
+       writerMock.On("UpdateNodebInfo", &updatedNodebInfo2).Return(nil)
+       e2tInstancesManagerMock.On("AddRansToInstance", e2tInstanceFullAddress, []string{nodebRanName}).Return(nil)
+       rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(&rmrCgo.MBuf{}, nil)
+
        handler.Handle(notificationRequest)
-       writerMock.AssertCalled(t, "SaveNodeb", mock.Anything, nodebInfo)
-       assertNewNodebSuccessCalls(readerMock, t, e2tInstancesManagerMock, writerMock, routingManagerClientMock, rmrMessengerMock)
+
+       readerMock.AssertExpectations(t)
+       writerMock.AssertExpectations(t)
+       e2tInstancesManagerMock.AssertExpectations(t)
+}
+
+
+
+func TestE2SetupRequestNotificationHandler_HandleNewGnbSuccess(t *testing.T) {
+       testE2SetupRequestNotificationHandler_HandleNewRanSuccess(t, GnbSetupRequestXmlPath)
+}
+
+func TestE2SetupRequestNotificationHandler_HandleNewGnbWithoutFunctionsSuccess(t *testing.T) {
+       testE2SetupRequestNotificationHandler_HandleNewRanSuccess(t, GnbWithoutFunctionsSetupRequestXmlPath)
 }
 
 func TestE2SetupRequestNotificationHandler_HandleNewEnGnbSuccess(t *testing.T) {
-       xmlEnGnb := readXmlFile(t, EnGnbSetupRequestXmlPath)
-       handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
-       readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
-       e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
-       var gnb *entities.NodebInfo
-       readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewResourceNotFoundError("Not found"))
-       writerMock.On("SaveNodeb", mock.Anything, mock.Anything).Return(nil)
-       routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
-       writerMock.On("UpdateNodebInfo", mock.Anything).Return(nil)
-       e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
-       var errEmpty error
-       rmrMessage := &rmrCgo.MBuf{}
-       rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(rmrMessage, errEmpty)
-       prefBytes := []byte(prefix)
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append(prefBytes, xmlEnGnb...)}
-       handler.Handle(notificationRequest)
-       assertNewNodebSuccessCalls(readerMock, t, e2tInstancesManagerMock, writerMock, routingManagerClientMock, rmrMessengerMock)
+       testE2SetupRequestNotificationHandler_HandleNewRanSuccess(t, EnGnbSetupRequestXmlPath)
 }
 
 func TestE2SetupRequestNotificationHandler_HandleNewNgEnbSuccess(t *testing.T) {
-       xmlNgEnb := readXmlFile(t, NgEnbSetupRequestXmlPath)
-       handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
-       readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
-       e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
-       var gnb *entities.NodebInfo
-       readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewResourceNotFoundError("Not found"))
-       writerMock.On("SaveNodeb", mock.Anything, mock.Anything).Return(nil)
-       routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
-       writerMock.On("UpdateNodebInfo", mock.Anything).Return(nil)
-       e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
-       var errEmpty error
-       rmrMessage := &rmrCgo.MBuf{}
-       rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(rmrMessage, errEmpty)
-       prefBytes := []byte(prefix)
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append(prefBytes, xmlNgEnb...)}
-       handler.Handle(notificationRequest)
-       assertNewNodebSuccessCalls(readerMock, t, e2tInstancesManagerMock, writerMock, routingManagerClientMock, rmrMessengerMock)
+       testE2SetupRequestNotificationHandler_HandleNewRanSuccess(t, NgEnbSetupRequestXmlPath)
 }
 
-func TestE2SetupRequestNotificationHandler_HandleExistingGnbSuccess(t *testing.T) {
+func testE2SetupRequestNotificationHandler_HandleExistingConnectedGnbSuccess(t *testing.T, withFunctions bool) {
        xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
-
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
-       var gnb = &entities.NodebInfo{
+       var nodebInfo = &entities.NodebInfo{
                RanName:                      nodebRanName,
                AssociatedE2TInstanceAddress: e2tInstanceFullAddress,
                ConnectionStatus:             entities.ConnectionStatus_CONNECTED,
                NodeType:                     entities.Node_GNB,
                Configuration:                &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{}},
        }
-       readerMock.On("GetNodeb", mock.Anything).Return(gnb, nil)
+
+       if withFunctions {
+               gnb := nodebInfo.GetGnb()
+               gnb.RanFunctions = []*entities.RanFunction{{RanFunctionId: 2, RanFunctionRevision: 2}}
+       }
+
+       readerMock.On("GetNodeb", nodebRanName).Return(nodebInfo, nil)
        routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
 
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
-       gnbToUpdate := getExpectedNodebWithFunctionsForExistingRan(*gnb, notificationRequest.Payload)
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xmlGnb...)}
+       gnbToUpdate := getExpectedNodebForExistingRan(*nodebInfo, notificationRequest.Payload)
        writerMock.On("UpdateNodebInfo", gnbToUpdate).Return(nil)
-       e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
+       e2tInstancesManagerMock.On("AddRansToInstance", e2tInstanceFullAddress, []string{nodebRanName}).Return(nil)
        var errEmpty error
-       rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(&rmrCgo.MBuf{}, errEmpty)
+       rmrMessengerMock.On("SendMsg", mock.Anything, true).Return(&rmrCgo.MBuf{}, errEmpty)
        handler.Handle(notificationRequest)
-       writerMock.AssertCalled(t, "UpdateNodebInfo", gnbToUpdate)
-       assertExistingNodebSuccessCalls(readerMock, t, e2tInstancesManagerMock, writerMock, routingManagerClientMock, rmrMessengerMock)
+       readerMock.AssertExpectations(t)
+       writerMock.AssertExpectations(t)
+       writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 3)
+       e2tInstancesManagerMock.AssertExpectations(t)
+       rmrMessengerMock.AssertCalled(t, "SendMsg", mock.Anything, true)
 }
 
-func TestE2SetupRequestNotificationHandler_HandleExistingGnbWithFunctionsSuccess(t *testing.T) {
-       xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
+func TestE2SetupRequestNotificationHandler_HandleExistingConnectedGnbWithoutFunctionsSuccess(t *testing.T) {
+       testE2SetupRequestNotificationHandler_HandleExistingConnectedGnbSuccess(t, false)
+}
+
+func TestE2SetupRequestNotificationHandler_HandleExistingConnectedGnbWithFunctionsSuccess(t *testing.T) {
+       testE2SetupRequestNotificationHandler_HandleExistingConnectedGnbSuccess(t, true)
+}
 
+func TestE2SetupRequestNotificationHandler_HandleExistingDisconnectedGnbSuccess(t *testing.T) {
+       xmlGnb := readXmlFile(t, GnbSetupRequestXmlPath)
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
-       var gnb = &entities.NodebInfo{
+       var nodebInfo = &entities.NodebInfo{
                RanName:                      nodebRanName,
                AssociatedE2TInstanceAddress: e2tInstanceFullAddress,
-               ConnectionStatus:             entities.ConnectionStatus_CONNECTED,
+               ConnectionStatus:             entities.ConnectionStatus_DISCONNECTED,
                NodeType:                     entities.Node_GNB,
-               Configuration: &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{RanFunctions: []*entities.RanFunction{
-                       {
-                               RanFunctionId:       &wrappers.UInt32Value{Value: 2},
-                               RanFunctionRevision: &wrappers.UInt32Value{Value: 2},
-                       },
-               }}},
+               Configuration:                &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{}},
        }
-       readerMock.On("GetNodeb", mock.Anything).Return(gnb, nil)
-       routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
 
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
-       gnbToUpdate := getExpectedNodebWithFunctionsForExistingRan(*gnb, notificationRequest.Payload)
+       readerMock.On("GetNodeb", nodebRanName).Return(nodebInfo, nil)
+       routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
 
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xmlGnb...)}
+       gnbToUpdate := getExpectedNodebForExistingRan(*nodebInfo, notificationRequest.Payload)
        writerMock.On("UpdateNodebInfo", gnbToUpdate).Return(nil)
-       e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
+       gnbToUpdate2 := *gnbToUpdate
+       gnbToUpdate2.ConnectionStatus = entities.ConnectionStatus_CONNECTED
+       writerMock.On("UpdateNodebInfoOnConnectionStatusInversion", &gnbToUpdate2, nodebRanName+"_CONNECTED").Return(nil)
+       gnbToUpdate3 := *gnbToUpdate
+       gnbToUpdate3.ConnectionStatus = entities.ConnectionStatus_CONNECTED
+       gnbToUpdate3.AssociatedE2TInstanceAddress = e2tInstanceFullAddress
+       writerMock.On("UpdateNodebInfo", &gnbToUpdate3).Return(nil)
+       e2tInstancesManagerMock.On("AddRansToInstance", e2tInstanceFullAddress, []string{nodebRanName}).Return(nil)
        var errEmpty error
        rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(&rmrCgo.MBuf{}, errEmpty)
        handler.Handle(notificationRequest)
-       writerMock.AssertCalled(t, "UpdateNodebInfo", gnbToUpdate)
-       assertExistingNodebSuccessCalls(readerMock, t, e2tInstancesManagerMock, writerMock, routingManagerClientMock, rmrMessengerMock)
+       readerMock.AssertExpectations(t)
+       writerMock.AssertExpectations(t)
+       writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 2)
+       e2tInstancesManagerMock.AssertExpectations(t)
 }
 
-func getExpectedNodebWithFunctionsForExistingRan(nodeb entities.NodebInfo, payload []byte) *entities.NodebInfo {
+func getExpectedNodebForExistingRan(nodeb entities.NodebInfo, payload []byte) *entities.NodebInfo {
        pipInd := bytes.IndexByte(payload, '|')
        setupRequest := &models.E2SetupRequestMessage{}
        _ = xml.Unmarshal(normalizeXml(payload[pipInd+1:]), &setupRequest.E2APPDU)
@@ -307,14 +314,13 @@ func getExpectedNodebWithFunctionsForExistingRan(nodeb entities.NodebInfo, paylo
        return &nodeb
 }
 
-func getExpectedNodebWithFunctionsForNewRan(payload []byte) *entities.NodebInfo {
+func getExpectedNodebForNewRan(payload []byte) *entities.NodebInfo {
        pipInd := bytes.IndexByte(payload, '|')
        setupRequest := &models.E2SetupRequestMessage{}
        _ = xml.Unmarshal(normalizeXml(payload[pipInd+1:]), &setupRequest.E2APPDU)
 
        nodeb := &entities.NodebInfo{
                AssociatedE2TInstanceAddress: e2tInstanceFullAddress,
-               ConnectionStatus:             entities.ConnectionStatus_CONNECTED,
                RanName:                      nodebRanName,
                NodeType:                     entities.Node_GNB,
                Configuration: &entities.NodebInfo_Gnb{
@@ -348,7 +354,7 @@ func TestE2SetupRequestNotificationHandler_HandleParseError(t *testing.T) {
 func TestE2SetupRequestNotificationHandler_HandleUnmarshalError(t *testing.T) {
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), "xmlGnb"...)}
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), "xmlGnb"...)}
        handler.Handle(notificationRequest)
        readerMock.AssertNotCalled(t, "GetNodeb", mock.Anything)
        writerMock.AssertNotCalled(t, "SaveNodeb", mock.Anything, mock.Anything)
@@ -363,7 +369,7 @@ func TestE2SetupRequestNotificationHandler_HandleGetE2TInstanceError(t *testing.
        handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock := initMocks(t)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, common.NewResourceNotFoundError("Not found"))
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append(prefBytes, xmlGnb...)}
        handler.Handle(notificationRequest)
        e2tInstancesManagerMock.AssertCalled(t, "GetE2TInstance", e2tInstanceFullAddress)
@@ -382,7 +388,7 @@ func TestE2SetupRequestNotificationHandler_HandleGetNodebError(t *testing.T) {
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
        var gnb *entities.NodebInfo
        readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewInternalError(errors.New("some error")))
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xmlGnb...)}
        handler.Handle(notificationRequest)
        e2tInstancesManagerMock.AssertCalled(t, "GetE2TInstance", e2tInstanceFullAddress)
        readerMock.AssertCalled(t, "GetNodeb", mock.Anything)
@@ -401,12 +407,19 @@ func TestE2SetupRequestNotificationHandler_HandleAssociationError(t *testing.T)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
        var gnb *entities.NodebInfo
        readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewResourceNotFoundError("Not found"))
-       writerMock.On("SaveNodeb", mock.Anything, mock.Anything).Return(nil)
+       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(e2SetupMsgPrefix), xmlGnb...)}
+       nodebInfo := getExpectedNodebForNewRan(notificationRequest.Payload)
+       writerMock.On("SaveNodeb", nodebInfo).Return(nil)
+       updatedNodebInfo := *nodebInfo
+       updatedNodebInfo.ConnectionStatus = entities.ConnectionStatus_CONNECTED
+       writerMock.On("UpdateNodebInfoOnConnectionStatusInversion", &updatedNodebInfo, nodebRanName+"_CONNECTED").Return(nil)
        writerMock.On("UpdateNodebInfo", mock.Anything).Return(nil)
        e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
        routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(errors.New("association error"))
+       updatedNodebInfo2 := *nodebInfo
+       updatedNodebInfo2.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
+       writerMock.On("UpdateNodebInfoOnConnectionStatusInversion", &updatedNodebInfo2, nodebRanName+"_DISCONNECTED").Return(nil)
        var errEmpty error
-       notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append([]byte(prefix), xmlGnb...)}
        mbuf := getMbuf(rmrCgo.RIC_E2_SETUP_FAILURE, E2SetupFailureResponseWithTransportCause, notificationRequest)
        rmrMessengerMock.On("WhSendMsg", mbuf, true).Return(&rmrCgo.MBuf{}, errEmpty)
        handler.Handle(notificationRequest)
@@ -414,7 +427,6 @@ func TestE2SetupRequestNotificationHandler_HandleAssociationError(t *testing.T)
        e2tInstancesManagerMock.AssertCalled(t, "GetE2TInstance", e2tInstanceFullAddress)
        writerMock.AssertCalled(t, "SaveNodeb", mock.Anything, mock.Anything)
        routingManagerClientMock.AssertCalled(t, "AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything)
-       writerMock.AssertCalled(t, "UpdateNodebInfo", mock.Anything)
        e2tInstancesManagerMock.AssertNotCalled(t, "AddRansToInstance", mock.Anything, mock.Anything)
        rmrMessengerMock.AssertCalled(t, "WhSendMsg", mbuf, true)
 }
@@ -422,11 +434,17 @@ func TestE2SetupRequestNotificationHandler_HandleAssociationError(t *testing.T)
 func TestE2SetupRequestNotificationHandler_ConvertTo20BitStringError(t *testing.T) {
        xmlEnGnb := readXmlFile(t, EnGnbSetupRequestXmlPath)
        logger := tests.InitLog(t)
-       config := &configuration.Configuration{RnibRetryIntervalMs: 10, MaxRnibConnectionAttempts: 3, GlobalRicId: struct {
-               RicId string
-               Mcc   string
-               Mnc   string
-       }{Mcc: "327", Mnc: "94", RicId: "10011001101010101011"}}
+       config := &configuration.Configuration{
+               RnibRetryIntervalMs:       10,
+               MaxRnibConnectionAttempts: 3,
+               RnibWriter: configuration.RnibWriterConfig{
+                       StateChangeMessageChannel: StateChangeMessageChannel,
+               },
+               GlobalRicId: struct {
+                       RicId string
+                       Mcc   string
+                       Mnc   string
+               }{Mcc: "327", Mnc: "94", RicId: "10011001101010101011"}}
        rmrMessengerMock := &mocks.RmrMessengerMock{}
        rmrSender := tests.InitRmrSender(rmrMessengerMock, logger)
        readerMock := &mocks.RnibReaderMock{}
@@ -434,20 +452,25 @@ func TestE2SetupRequestNotificationHandler_ConvertTo20BitStringError(t *testing.
        routingManagerClientMock := &mocks.RoutingManagerClientMock{}
        rnibDataService := services.NewRnibDataService(logger, config, readerMock, writerMock)
        e2tInstancesManagerMock := &mocks.E2TInstancesManagerMock{}
-       e2tAssociationManager := managers.NewE2TAssociationManager(logger, rnibDataService, e2tInstancesManagerMock, routingManagerClientMock)
-       handler := NewE2SetupRequestNotificationHandler(logger, config, e2tInstancesManagerMock, rmrSender, rnibDataService, e2tAssociationManager)
+       ranListManager := managers.NewRanListManager(logger, rnibDataService)
+       ranAlarmService := services.NewRanAlarmService(logger, config)
+       ranConnectStatusChangeManager := managers.NewRanConnectStatusChangeManager(logger, rnibDataService, ranListManager, ranAlarmService)
+
+       e2tAssociationManager := managers.NewE2TAssociationManager(logger, rnibDataService, e2tInstancesManagerMock, routingManagerClientMock, ranConnectStatusChangeManager)
+       handler := NewE2SetupRequestNotificationHandler(logger, config, e2tInstancesManagerMock, rmrSender, rnibDataService, e2tAssociationManager, ranConnectStatusChangeManager)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
        var gnb *entities.NodebInfo
        readerMock.On("GetNodeb", mock.Anything).Return(gnb, common.NewResourceNotFoundError("Not found"))
        writerMock.On("SaveNodeb", mock.Anything, mock.Anything).Return(nil)
+       writerMock.On("UpdateNodebInfoOnConnectionStatusInversion", mock.Anything, mock.Anything).Return(nil)
        routingManagerClientMock.On("AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything).Return(nil)
        writerMock.On("UpdateNodebInfo", mock.Anything).Return(nil)
        e2tInstancesManagerMock.On("AddRansToInstance", mock.Anything, mock.Anything).Return(nil)
        var errEmpty error
        rmrMessage := &rmrCgo.MBuf{}
        rmrMessengerMock.On("SendMsg", mock.Anything, mock.Anything).Return(rmrMessage, errEmpty)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append(prefBytes, xmlEnGnb...)}
        handler.Handle(notificationRequest)
        readerMock.AssertCalled(t, "GetNodeb", mock.Anything)
@@ -466,7 +489,7 @@ func TestE2SetupRequestNotificationHandler_HandleExistingGnbInvalidStatusError(t
        readerMock.On("GetNodeb", mock.Anything).Return(gnb, nil)
        readerMock.On("GetGeneralConfiguration").Return(&entities.GeneralConfiguration{EnableRic: true}, nil)
        e2tInstancesManagerMock.On("GetE2TInstance", e2tInstanceFullAddress).Return(&entities.E2TInstance{}, nil)
-       prefBytes := []byte(prefix)
+       prefBytes := []byte(e2SetupMsgPrefix)
        notificationRequest := &models.NotificationRequest{RanName: nodebRanName, Payload: append(prefBytes, xmlGnb...)}
        handler.Handle(notificationRequest)
        readerMock.AssertCalled(t, "GetNodeb", mock.Anything)
@@ -480,11 +503,17 @@ func TestE2SetupRequestNotificationHandler_HandleExistingGnbInvalidStatusError(t
 
 func initMocks(t *testing.T) (*E2SetupRequestNotificationHandler, *mocks.RnibReaderMock, *mocks.RnibWriterMock, *mocks.RmrMessengerMock, *mocks.E2TInstancesManagerMock, *mocks.RoutingManagerClientMock) {
        logger := tests.InitLog(t)
-       config := &configuration.Configuration{RnibRetryIntervalMs: 10, MaxRnibConnectionAttempts: 3, GlobalRicId: struct {
-               RicId string
-               Mcc   string
-               Mnc   string
-       }{Mcc: "327", Mnc: "94", RicId: "AACCE"}}
+       config := &configuration.Configuration{
+               RnibRetryIntervalMs:       10,
+               MaxRnibConnectionAttempts: 3,
+               RnibWriter: configuration.RnibWriterConfig{
+                       StateChangeMessageChannel: StateChangeMessageChannel,
+               },
+               GlobalRicId: struct {
+                       RicId string
+                       Mcc   string
+                       Mnc   string
+               }{Mcc: "327", Mnc: "94", RicId: "AACCE"}}
        rmrMessengerMock := &mocks.RmrMessengerMock{}
        rmrSender := tests.InitRmrSender(rmrMessengerMock, logger)
        readerMock := &mocks.RnibReaderMock{}
@@ -492,27 +521,10 @@ func initMocks(t *testing.T) (*E2SetupRequestNotificationHandler, *mocks.RnibRea
        routingManagerClientMock := &mocks.RoutingManagerClientMock{}
        rnibDataService := services.NewRnibDataService(logger, config, readerMock, writerMock)
        e2tInstancesManagerMock := &mocks.E2TInstancesManagerMock{}
-       e2tAssociationManager := managers.NewE2TAssociationManager(logger, rnibDataService, e2tInstancesManagerMock, routingManagerClientMock)
-       handler := NewE2SetupRequestNotificationHandler(logger, config, e2tInstancesManagerMock, rmrSender, rnibDataService, e2tAssociationManager)
+       ranListManager := managers.NewRanListManager(logger, rnibDataService)
+       ranAlarmService := services.NewRanAlarmService(logger, config)
+       ranConnectStatusChangeManager := managers.NewRanConnectStatusChangeManager(logger, rnibDataService, ranListManager, ranAlarmService)
+       e2tAssociationManager := managers.NewE2TAssociationManager(logger, rnibDataService, e2tInstancesManagerMock, routingManagerClientMock, ranConnectStatusChangeManager)
+       handler := NewE2SetupRequestNotificationHandler(logger, config, e2tInstancesManagerMock, rmrSender, rnibDataService, e2tAssociationManager, ranConnectStatusChangeManager)
        return handler, readerMock, writerMock, rmrMessengerMock, e2tInstancesManagerMock, routingManagerClientMock
 }
-
-func assertNewNodebSuccessCalls(readerMock *mocks.RnibReaderMock, t *testing.T, e2tInstancesManagerMock *mocks.E2TInstancesManagerMock, writerMock *mocks.RnibWriterMock, routingManagerClientMock *mocks.RoutingManagerClientMock, rmrMessengerMock *mocks.RmrMessengerMock) {
-       readerMock.AssertCalled(t, "GetNodeb", mock.Anything)
-       writerMock.AssertCalled(t, "SaveNodeb", mock.Anything, mock.Anything)
-       e2tInstancesManagerMock.AssertCalled(t, "GetE2TInstance", e2tInstanceFullAddress)
-       routingManagerClientMock.AssertCalled(t, "AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything)
-       writerMock.AssertCalled(t, "UpdateNodebInfo", mock.Anything)
-       e2tInstancesManagerMock.AssertCalled(t, "AddRansToInstance", mock.Anything, mock.Anything)
-       rmrMessengerMock.AssertCalled(t, "SendMsg", mock.Anything, mock.Anything)
-}
-
-func assertExistingNodebSuccessCalls(readerMock *mocks.RnibReaderMock, t *testing.T, e2tInstancesManagerMock *mocks.E2TInstancesManagerMock, writerMock *mocks.RnibWriterMock, routingManagerClientMock *mocks.RoutingManagerClientMock, rmrMessengerMock *mocks.RmrMessengerMock) {
-       readerMock.AssertCalled(t, "GetNodeb", mock.Anything)
-       writerMock.AssertNotCalled(t, "SaveNodeb", mock.Anything, mock.Anything)
-       e2tInstancesManagerMock.AssertCalled(t, "GetE2TInstance", e2tInstanceFullAddress)
-       routingManagerClientMock.AssertCalled(t, "AssociateRanToE2TInstance", e2tInstanceFullAddress, mock.Anything)
-       writerMock.AssertCalled(t, "UpdateNodebInfo", mock.Anything)
-       e2tInstancesManagerMock.AssertCalled(t, "AddRansToInstance", mock.Anything, mock.Anything)
-       rmrMessengerMock.AssertCalled(t, "SendMsg", mock.Anything, mock.Anything)
-}