Enable export and import of SDN configuration

resolves #269 (closed)

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

controller/nucleus/networkElementService.go

@@ -11,6 +11,7 @@ import (
 	"code.fbi.h-da.de/danet/gosdn/controller/store"
 	"github.com/google/uuid"
 	"github.com/openconfig/ygot/ygot"
+	"github.com/openconfig/ygot/ytypes"
 
 	tpb "code.fbi.h-da.de/danet/gosdn/api/go/gosdn/transport"
 	log "github.com/sirupsen/logrus"
@@ -238,7 +239,8 @@ func (s *NetworkElementService) createNetworkElementFromStore(loadedNetworkEleme
 	}
 
 	// Use unmarshall from the network elements SBI to unmarshall ygot json in go struct.
-	err = mne.SBI().Unmarshal([]byte(loadedNetworkElement.Model), path, mne.GetModel())
+	opts := []ytypes.UnmarshalOpt{&ytypes.IgnoreReadOnlyFields{}, &ytypes.IgnoreExtraFields{}}
+	err = mne.SBI().Unmarshal([]byte(loadedNetworkElement.Model), path, mne.GetModel(), opts...)
 	if err != nil {
 		return nil, err
 	}