--- /dev/null
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 2019 Nokia
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package converters
+
+// #cgo CFLAGS: -I../asn1codec/inc/ -I../asn1codec/e2ap_engine/
+// #cgo LDFLAGS: -L ../asn1codec/lib/ -L../asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
+// #include <asn1codec_utils.h>
+// #include <resource_status_response_wrapper.h>
+import "C"
+import (
+ "fmt"
+ "rsm/models"
+ "unsafe"
+)
+
+const (
+ maxCellineNB = 256
+ maxFailedMeasObjects = 32
+)
+
+type IResourceStatusResponseConverter interface {
+ Convert(packedBuf []byte) (*models.ResourceStatusResponse, error)
+ UnpackX2apPduAsString(packedBuf []byte, maxMessageBufferSize int) (string, error)
+}
+
+type ResourceStatusResponseConverter struct {
+ X2apPduUnpacker
+}
+
+func NewResourceStatusResponseConverter(unpacker X2apPduUnpacker) ResourceStatusResponseConverter {
+ return ResourceStatusResponseConverter{unpacker}
+}
+
+func buildCellId(cellId C.ECGI_t) string {
+ plmnId := C.GoBytes(unsafe.Pointer(cellId.pLMN_Identity.buf), C.int(cellId.pLMN_Identity.size))
+ eutranCellIdentifier := C.GoBytes(unsafe.Pointer(cellId.eUTRANcellIdentifier.buf), C.int(cellId.eUTRANcellIdentifier.size))
+ return fmt.Sprintf("%x:%x", plmnId, eutranCellIdentifier)
+}
+
+func convertMeasurementFailureCauses(measurementFailureCause_List *C.MeasurementFailureCause_List_t, measurementInitiationResult *models.MeasurementInitiationResult) error {
+ var MeasurementFailureCauses []*models.MeasurementFailureCause
+
+ count := int(measurementFailureCause_List.list.count)
+ if count < 1 || count > maxFailedMeasObjects {
+ return fmt.Errorf("invalid number of failure cause elements, %d", int(count))
+ }
+
+ measurementFailureCause_ItemIEs_slice := (*[1 << 30]*C.MeasurementFailureCause_ItemIEs_t)(unsafe.Pointer(measurementFailureCause_List.list.array))[:count:count]
+ for _, itemIE := range measurementFailureCause_ItemIEs_slice {
+ switch itemIE.value.present {
+ case C.MeasurementFailureCause_ItemIEs__value_PR_MeasurementFailureCause_Item:
+ item := (*C.MeasurementFailureCause_Item_t)(unsafe.Pointer(&itemIE.value.choice[0]))
+ measurementFailedReportCharacteristics := C.GoBytes(unsafe.Pointer(item.measurementFailedReportCharacteristics.buf), C.int(item.measurementFailedReportCharacteristics.size))
+ measurementFailureCause := models.MeasurementFailureCause{MeasurementFailedReportCharacteristics: measurementFailedReportCharacteristics}
+ MeasurementFailureCauses = append(MeasurementFailureCauses, &measurementFailureCause)
+ /*Cause ignored - only need to know that the request failed and, possibly, which report characteristics failed*/
+ }
+ measurementInitiationResult.MeasurementFailureCauses = MeasurementFailureCauses
+ }
+
+ return nil
+}
+
+func convertMeasurementInitiationResult(measurementInitiationResult_List *C.MeasurementInitiationResult_List_t) ([]*models.MeasurementInitiationResult, error) {
+ var measurementInitiationResults []*models.MeasurementInitiationResult
+
+ count := int(measurementInitiationResult_List.list.count)
+ if count < 1 || count > maxCellineNB {
+ return nil, fmt.Errorf("invalid number of measurement initiation result elements, %d", count)
+ }
+ measurementInitiationResult_ItemIEs_slice := (*[1 << 30]*C.MeasurementInitiationResult_ItemIEs_t)(unsafe.Pointer(measurementInitiationResult_List.list.array))[:count:count]
+ for _, itemIE := range measurementInitiationResult_ItemIEs_slice {
+ switch itemIE.value.present {
+ case C.MeasurementInitiationResult_ItemIEs__value_PR_MeasurementInitiationResult_Item:
+ item := (*C.MeasurementInitiationResult_Item_t)(unsafe.Pointer(&itemIE.value.choice[0]))
+ measurementInitiationResult := models.MeasurementInitiationResult{CellId: buildCellId(item.cell_ID)}
+ if item.measurementFailureCause_List != nil {
+ if err:= convertMeasurementFailureCauses(item.measurementFailureCause_List, &measurementInitiationResult); err != nil {
+ return nil, err
+ }
+ }
+ measurementInitiationResults = append(measurementInitiationResults, &measurementInitiationResult)
+ }
+
+ }
+
+ return measurementInitiationResults, nil
+}
+
+func convertResourceStatusIEs(resourceStatusResponse *C.ResourceStatusResponse_t, response *models.ResourceStatusResponse) error {
+ count := int(resourceStatusResponse.protocolIEs.list.count)
+ resourceStatusResponse_IEs_slice := (*[1 << 30]*C.ResourceStatusResponse_IEs_t)(unsafe.Pointer(resourceStatusResponse.protocolIEs.list.array))[:count:count]
+ for _, resourceStatusResponse_IEs := range resourceStatusResponse_IEs_slice {
+ switch resourceStatusResponse_IEs.value.present {
+ case C.ResourceStatusResponse_IEs__value_PR_Measurement_ID:
+ measurement_ID := (*C.Measurement_ID_t)(unsafe.Pointer(&resourceStatusResponse_IEs.value.choice[0]))
+ if resourceStatusResponse_IEs.id == C.ProtocolIE_ID_id_ENB1_Measurement_ID {
+ response.ENB1_Measurement_ID = int64(*measurement_ID)
+ }
+ if resourceStatusResponse_IEs.id == C.ProtocolIE_ID_id_ENB2_Measurement_ID {
+ response.ENB2_Measurement_ID = int64(*measurement_ID)
+ }
+ case C.ResourceStatusResponse_IEs__value_PR_CriticalityDiagnostics:
+ /*ignored*/
+
+ case C.ResourceStatusResponse_IEs__value_PR_MeasurementInitiationResult_List:
+ measurementInitiationResults, err := convertMeasurementInitiationResult((*C.MeasurementInitiationResult_List_t)(unsafe.Pointer(&resourceStatusResponse_IEs.value.choice[0])))
+ if err != nil {
+ return err
+ }
+ response.MeasurementInitiationResults = measurementInitiationResults
+ }
+ }
+ return nil
+}
+
+func convertResourceStatusResponse(pdu *C.E2AP_PDU_t) (*models.ResourceStatusResponse, error) {
+ response := models.ResourceStatusResponse{}
+
+ if pdu.present != C.E2AP_PDU_PR_successfulOutcome {
+ return &response, fmt.Errorf("unexpected PDU, %d", int(pdu.present))
+ }
+
+ //dereference a union of pointers (C union is represented as a byte array with the size of the largest member)
+ successfulOutcome := *(**C.SuccessfulOutcome_t)(unsafe.Pointer(&pdu.choice[0]))
+ if successfulOutcome == nil || successfulOutcome.value.present != C.SuccessfulOutcome__value_PR_ResourceStatusResponse {
+ return &response, fmt.Errorf("unexpected PDU - not a resource status response")
+ }
+
+ resourceStatusResponse := (*C.ResourceStatusResponse_t)(unsafe.Pointer(&successfulOutcome.value.choice[0]))
+ if resourceStatusResponse.protocolIEs.list.count == 0 {
+ return &response, fmt.Errorf("unexpected PDU - no protocolIEs found")
+ }
+
+ if err := convertResourceStatusIEs(resourceStatusResponse, &response); err != nil {
+ return &response, err
+ }
+
+ return &response, nil
+}
+
+// Convert pdu to public ResourceStatusResponse
+func (r ResourceStatusResponseConverter) Convert(packedBuf []byte) (*models.ResourceStatusResponse, error) {
+ pdu, err := r.UnpackX2apPdu(packedBuf)
+ if err != nil {
+ return nil, err
+ }
+
+ defer C.delete_pdu(pdu)
+ return convertResourceStatusResponse(pdu)
+}
Code Review / ric-plt / resource-status-manager.git / blobdiff