[RIC-213] Add globalRicId to configuration and remove env var RIC_ID

[ric-plt/e2mgr.git] / E2Manager / e2pdus / x2_setup_requests.go

diff --git a/E2Manager/e2pdus/x2_setup_requests.go b/E2Manager/e2pdus/x2_setup_requests.go
index 938506b..7b91f5a 100644 (file)
--- a/E2Manager/e2pdus/x2_setup_requests.go
+++ b/E2Manager/e2pdus/x2_setup_requests.go
@@ -1,5 +1,4 @@
-/*******************************************************************************
- *
+/*
  *   Copyright (c) 2019 AT&T Intellectual Property.
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,12 +12,17 @@
  *   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.
- *
- *******************************************************************************/
+ */
+
+/*
+ * This source code is part of the near-RT RIC (RAN Intelligent Controller)
+ * platform project (RICP).
+ */
+
 package e2pdus
 
-// #cgo CFLAGS: -I../asn1codec/inc/ -I../asn1codec/e2ap_engine/
-// #cgo LDFLAGS: -L ../asn1codec/lib/ -L../asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
+// #cgo CFLAGS: -I../3rdparty/asn1codec/inc/ -I../3rdparty/asn1codec/e2ap_engine/
+// #cgo LDFLAGS: -L ../3rdparty/asn1codec/lib/ -L../3rdparty/asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
 // #include <asn1codec_utils.h>
 // #include <x2setup_request_wrapper.h>
 import "C"
@@ -29,6 +33,7 @@ import (
 )
 
 const (
+       EnvRicId          = "RIC_ID"
        ShortMacro_eNB_ID = 18
        Macro_eNB_ID      = 20
        LongMacro_eNB_ID  = 21
@@ -40,7 +45,13 @@ var PackedX2setupRequest []byte
 var PackedEndcX2setupRequestAsString string
 var PackedX2setupRequestAsString string
 
-func PreparePackedEndcX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int, pLMNId []byte, eNB_Id []byte /*18, 20, 21, 28 bits length*/, bitqty uint, ricFlag []byte) ([]byte, string, error) {
+/*The Ric Id is the combination of pLMNId and ENBId*/
+var pLMNId []byte
+var eNBId []byte
+var eNBIdBitqty uint
+var ricFlag = []byte{0xbb, 0xbc, 0xcc} /*pLMNId [3]bytes*/
+
+func preparePackedEndcX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int, pLMNId []byte, eNB_Id []byte /*18, 20, 21, 28 bits length*/, bitqty uint, ricFlag []byte) ([]byte, string, error) {
        packedBuf := make([]byte, maxAsn1PackedBufferSize)
        errBuf := make([]C.char, maxAsn1CodecMessageBufferSize)
        packedBufSize := C.ulong(len(packedBuf))
@@ -68,7 +79,7 @@ func PreparePackedEndcX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMe
        return packedBuf[:packedBufSize], pduAsString, nil
 }
 
-func PreparePackedX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int, pLMNId []byte, eNB_Id []byte /*18, 20, 21, 28 bits length*/, bitqty uint, ricFlag []byte) ([]byte, string, error) {
+func preparePackedX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int, pLMNId []byte, eNB_Id []byte /*18, 20, 21, 28 bits length*/, bitqty uint, ricFlag []byte) ([]byte, string, error) {
        packedBuf := make([]byte, maxAsn1PackedBufferSize)
        errBuf := make([]C.char, maxAsn1CodecMessageBufferSize)
        packedBufSize := C.ulong(len(packedBuf))
@@ -94,3 +105,44 @@ func PreparePackedX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessag
        }
        return packedBuf[:packedBufSize], pduAsString, nil
 }
+
+//Expected value in RIC_ID = pLMN_Identity-eNB_ID/<eNB_ID size in bits>
+//<6 hex digits>-<6 or 8 hex digits>/<18|20|21|28>
+//Each byte is represented by two hex digits, the value in the lowest byte of the eNB_ID must be assigned to the lowest bits
+//For example, to get the value of ffffeab/28  the last byte must be 0x0b, not 0xb0 (-ffffea0b/28).
+func parseRicID(ricId string) error {
+       if _, err := fmt.Sscanf(ricId, "%6x-%8x/%2d", &pLMNId, &eNBId, &eNBIdBitqty); err != nil {
+               return fmt.Errorf("unable to extract the value of %s: %s", EnvRicId, err)
+       }
+
+       if len(pLMNId) < 3 {
+               return fmt.Errorf("invalid value for %s, len(pLMNId:%v) != 3", EnvRicId, pLMNId)
+       }
+
+       if len(eNBId) < 3 {
+               return fmt.Errorf("invalid value for %s, len(eNBId:%v) != 3 or 4", EnvRicId, eNBId)
+       }
+
+       if eNBIdBitqty != ShortMacro_eNB_ID && eNBIdBitqty != Macro_eNB_ID && eNBIdBitqty != LongMacro_eNB_ID && eNBIdBitqty != Home_eNB_ID {
+               return fmt.Errorf("invalid value for %s, eNBIdBitqty: %d", EnvRicId, eNBIdBitqty)
+       }
+
+       return nil
+}
+
+func init() {
+       var err error
+       ricId := "bbbccc-abcd0e/20"
+       if err = parseRicID(ricId); err != nil {
+               panic(err)
+       }
+
+       PackedEndcX2setupRequest, PackedEndcX2setupRequestAsString, err = preparePackedEndcX2SetupRequest(MaxAsn1PackedBufferSize, MaxAsn1CodecMessageBufferSize, pLMNId, eNBId, eNBIdBitqty, ricFlag)
+       if err != nil {
+               panic(err)
+       }
+       PackedX2setupRequest, PackedX2setupRequestAsString, err = preparePackedX2SetupRequest(MaxAsn1PackedBufferSize, MaxAsn1CodecMessageBufferSize, pLMNId, eNBId, eNBIdBitqty, ricFlag)
+       if err != nil {
+               panic(err)
+       }
+}