First commit

setup/e2mgr/E2Manager/rmrCgo/rmrCgoUtils.go

@@ -0,0 +1,113 @@
+//
+// 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package rmrCgo
+
+// #cgo LDFLAGS: -L/usr/local/lib -lrmr_si
+// #include <rmr/rmr.h>
+// #include <stdlib.h>
+import "C"
+import (
+	"e2mgr/logger"
+	"bytes"
+	"encoding/binary"
+	"strings"
+	"unsafe"
+)
+
+func convertToMBuf(logger *logger.Logger, m *C.rmr_mbuf_t) *MBuf {
+	payloadArr := C.GoBytes(unsafe.Pointer(m.payload),C.int(m.len))
+	xActionArr := C.GoBytes(unsafe.Pointer(m.xaction),C.int(RMR_MAX_XACTION_LEN))
+
+	// Trim padding (space and 0)
+	xActionStr :=  strings.TrimRight(string(xActionArr),"\040\000")
+	xActionArr = []byte(xActionStr)
+
+	mbuf := &MBuf{
+		MType: int(m.mtype),
+		Len:   int(m.len),
+		Payload: &payloadArr,
+		XAction: &xActionArr,
+		msgSrc: C.CBytes(make([]byte, RMR_MAX_SRC_LEN)),
+	}
+
+	C.rmr_get_src(m, (*C.uchar)(mbuf.msgSrc)) // Capture message source
+
+	meidBuf := make([]byte, RMR_MAX_MEID_LEN)
+	if meidCstr := C.rmr_get_meid(m, (*C.uchar)(unsafe.Pointer(&meidBuf[0]))); meidCstr != nil {
+		mbuf.Meid =	strings.TrimRight(string(meidBuf), "\000")
+	}
+
+	return mbuf
+}
+
+func (ctx *Context) getAllocatedCRmrMBuf(logger *logger.Logger, mBuf *MBuf, maxMsgSize int) (cMBuf *C.rmr_mbuf_t) {
+	var xActionBuf [RMR_MAX_XACTION_LEN]byte
+	var meidBuf[RMR_MAX_MEID_LEN]byte
+
+	cMBuf = C.rmr_alloc_msg(ctx.RmrCtx, C.int(maxMsgSize))
+	cMBuf.mtype = C.int(mBuf.MType)
+	cMBuf.len = C.int(mBuf.Len)
+
+	payloadLen := len(*mBuf.Payload)
+	xActionLen := len(*mBuf.XAction)
+
+	//Add padding
+	copy(xActionBuf[:], *mBuf.XAction)
+	for i:= xActionLen; i < RMR_MAX_XACTION_LEN; i++{
+		xActionBuf[i] = '\040' //space
+	}
+
+	// Add padding
+	copy(meidBuf[:], mBuf.Meid)
+	for i:= len(mBuf.Meid); i < RMR_MAX_MEID_LEN; i++{
+		meidBuf[i] = 0
+	}
+
+	payloadArr := (*[1 << 30]byte)(unsafe.Pointer(cMBuf.payload))[:payloadLen:payloadLen]
+	xActionArr := (*[1 << 30]byte)(unsafe.Pointer(cMBuf.xaction))[:RMR_MAX_XACTION_LEN:RMR_MAX_XACTION_LEN]
+
+	err := binary.Read(bytes.NewReader(*mBuf.Payload), binary.LittleEndian, payloadArr)
+	if err != nil {
+		ctx.Logger.Errorf(
+			"#rmrCgoUtils.getAllocatedCRmrMBuf - Failed to read payload to allocated RMR message buffer")
+	}
+	err = binary.Read(bytes.NewReader(xActionBuf[:]), binary.LittleEndian, xActionArr)
+	if err != nil {
+		ctx.Logger.Errorf(
+			"#rmrCgoUtils.getAllocatedCRmrMBuf - Failed to read xAction data to allocated RMR message buffer")
+	}
+	len := C.rmr_bytes2meid(cMBuf,  (*C.uchar)(unsafe.Pointer(&meidBuf[0])), C.int(RMR_MAX_MEID_LEN))
+	if int(len) != RMR_MAX_MEID_LEN {
+		ctx.Logger.Errorf(
+			"#rmrCgoUtils.getAllocatedCRmrMBuf - Failed to copy meid data to allocated RMR message buffer")
+	}
+	return cMBuf
+}
+
+//TODO: change to assert or return error
+func (ctx *Context) checkContextInitialized() {
+	if ctx.RmrCtx == nil {
+		if ctx.Logger != nil {
+			ctx.Logger.DPanicf("#rmrCgoUtils.checkContextInitialized - The RMR router has not been initialized")
+		}
+		panic("#rmrCgoUtils.checkContextInitialized - The RMR router has not been initialized. To initialize router please call Init() method")
+	}
+}