2 // Copyright 2019 AT&T Intellectual Property
3 // Copyright 2019 Nokia
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
20 // #cgo CFLAGS: -I../asn1codec/inc/ -I../asn1codec/e2ap_engine/
21 // #cgo LDFLAGS: -L ../asn1codec/lib/ -L../asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
22 // #include <asn1codec_utils.h>
23 // #include <resource_status_response_wrapper.h>
31 type ResourceStatusFailureConverter struct {
35 func NewResourceStatusFailureConverter(unpacker X2apPduUnpacker) ResourceStatusFailureConverter {
36 return ResourceStatusFailureConverter{unpacker}
39 func convertCompleteFailureCauseInformation(completeFailureCauseInformation_List *C.CompleteFailureCauseInformation_List_t) ([]*models.MeasurementInitiationResult, error) {
40 var measurementInitiationResults []*models.MeasurementInitiationResult
42 count := int(completeFailureCauseInformation_List.list.count)
43 if count < 1 || count > maxCellineNB {
44 return nil, fmt.Errorf("invalid number of complete failure cause information elements, %d", count)
46 completeFailureCauseInformation_ItemIEs_slice := (*[1 << 30]*C.CompleteFailureCauseInformation_ItemIEs_t)(unsafe.Pointer(completeFailureCauseInformation_List.list.array))[:count:count]
47 for _, itemIE := range completeFailureCauseInformation_ItemIEs_slice {
49 switch itemIE.value.present {
50 case C.CompleteFailureCauseInformation_ItemIEs__value_PR_CompleteFailureCauseInformation_Item:
51 item := (*C.CompleteFailureCauseInformation_Item_t)(unsafe.Pointer(&itemIE.value.choice[0]))
52 measurementInitiationResult := models.MeasurementInitiationResult{CellId: buildCellId(item.cell_ID)}
53 if err:=convertMeasurementFailureCauses(&item.measurementFailureCause_List, &measurementInitiationResult); err != nil {
56 measurementInitiationResults = append(measurementInitiationResults, &measurementInitiationResult)
60 return measurementInitiationResults, nil
63 func convertResourceFailureIEs(resourceStatusFailure *C.ResourceStatusFailure_t, response *models.ResourceStatusResponse) error {
64 count := int(resourceStatusFailure.protocolIEs.list.count)
65 resourceStatusFailure_IEs_slice := (*[1 << 30]*C.ResourceStatusFailure_IEs_t)(unsafe.Pointer(resourceStatusFailure.protocolIEs.list.array))[:count:count]
66 for _, resourceStatusFailure_IEs := range resourceStatusFailure_IEs_slice {
67 switch resourceStatusFailure_IEs.value.present {
68 case C.ResourceStatusFailure_IEs__value_PR_Measurement_ID:
69 measurement_ID := (*C.Measurement_ID_t)(unsafe.Pointer(&resourceStatusFailure_IEs.value.choice[0]))
70 if resourceStatusFailure_IEs.id == C.ProtocolIE_ID_id_ENB1_Measurement_ID {
71 response.ENB1_Measurement_ID = int64(*measurement_ID)
73 if resourceStatusFailure_IEs.id == C.ProtocolIE_ID_id_ENB2_Measurement_ID {
74 response.ENB2_Measurement_ID = int64(*measurement_ID)
76 case C.ResourceStatusFailure_IEs__value_PR_CriticalityDiagnostics:
78 case C.ResourceStatusFailure_IEs__value_PR_Cause:
80 case C.ResourceStatusFailure_IEs__value_PR_CompleteFailureCauseInformation_List:
81 measurementInitiationResults, err := convertCompleteFailureCauseInformation((*C.CompleteFailureCauseInformation_List_t)(unsafe.Pointer(&resourceStatusFailure_IEs.value.choice[0])))
85 response.MeasurementInitiationResults = measurementInitiationResults
91 func convertResourceStatusFailure(pdu *C.E2AP_PDU_t) (*models.ResourceStatusResponse, error) {
92 response := models.ResourceStatusResponse{}
94 if pdu.present != C.E2AP_PDU_PR_unsuccessfulOutcome {
95 return &response, fmt.Errorf("unexpected PDU, %d", int(pdu.present))
98 //dereference a union of pointers (C union is represented as a byte array with the size of the largest member)
99 unsuccessfulOutcome := *(**C.UnsuccessfulOutcome_t)(unsafe.Pointer(&pdu.choice[0]))
100 if unsuccessfulOutcome == nil || unsuccessfulOutcome.value.present != C.UnsuccessfulOutcome__value_PR_ResourceStatusFailure {
101 return &response, fmt.Errorf("unexpected PDU - not a resource status failure")
104 resourceStatusFailure := (*C.ResourceStatusFailure_t)(unsafe.Pointer(&unsuccessfulOutcome.value.choice[0]))
105 if resourceStatusFailure.protocolIEs.list.count == 0 {
106 return &response, fmt.Errorf("unexpected PDU - no protocolIEs found")
109 if err := convertResourceFailureIEs(resourceStatusFailure, &response); err != nil {
110 return &response, err
113 return &response, nil
116 // Convert pdu to public ResourceStatusResponse
117 func (r ResourceStatusFailureConverter) Convert(packedBuf []byte) (*models.ResourceStatusResponse, error) {
118 pdu, err := r.UnpackX2apPdu(packedBuf)
123 defer C.delete_pdu(pdu)
124 return convertResourceStatusFailure(pdu)