--- /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.
+
+// This source code is part of the near-RT RIC (RAN Intelligent Controller)
+// platform project (RICP).
+
+
+package rmr
+
+// #cgo LDFLAGS: -L/usr/local/lib -lrmr_nng -lnng
+// #include <rmr/rmr.h>
+// #include <stdlib.h>
+import "C"
+import (
+ "fmt"
+ "unsafe"
+)
+
+func NewMBuf(mType int, len int, payload []byte, xAction []byte) *MBuf {
+ return &MBuf{
+ MType: mType,
+ Len: len,
+ Payload: payload,
+ XAction: xAction,
+ }
+}
+
+func NewContext(maxMsgSize int, maxRetries, flags int, ctx unsafe.Pointer) *Context {
+ return &Context{
+ MaxMsgSize: maxMsgSize,
+ MaxRetries: maxRetries,
+ Flags: flags,
+ RmrCtx: ctx,
+ }
+}
+
+const (
+ RMR_MAX_XACTION_LEN = int(C.RMR_MAX_XID)
+ RMR_MAX_MSG_SIZE = int(C.RMR_MAX_RCV_BYTES)
+ RMR_MAX_MEID_LEN = int(C.RMR_MAX_MEID)
+
+ //states
+ RMR_OK = C.RMR_OK
+ RMR_ERR_BADARG = C.RMR_ERR_BADARG
+ RMR_ERR_NOENDPT = C.RMR_ERR_NOENDPT
+ RMR_ERR_EMPTY = C.RMR_ERR_EMPTY
+ RMR_ERR_NOHDR = C.RMR_ERR_NOHDR
+ RMR_ERR_SENDFAILED = C.RMR_ERR_SENDFAILED
+ RMR_ERR_CALLFAILED = C.RMR_ERR_CALLFAILED
+ RMR_ERR_NOWHOPEN = C.RMR_ERR_NOWHOPEN
+ RMR_ERR_WHID = C.RMR_ERR_WHID
+ RMR_ERR_OVERFLOW = C.RMR_ERR_OVERFLOW
+ RMR_ERR_RETRY = C.RMR_ERR_RETRY
+ RMR_ERR_RCVFAILED = C.RMR_ERR_RCVFAILED
+ RMR_ERR_TIMEOUT = C.RMR_ERR_TIMEOUT
+ RMR_ERR_UNSET = C.RMR_ERR_UNSET
+ RMR_ERR_TRUNC = C.RMR_ERR_TRUNC
+ RMR_ERR_INITFAILED = C.RMR_ERR_INITFAILED
+)
+
+var states = map[int]string{
+ RMR_OK: "state is good",
+ RMR_ERR_BADARG: "argument passd to function was unusable",
+ RMR_ERR_NOENDPT: "send/call could not find an endpoint based on msg type",
+ RMR_ERR_EMPTY: "msg received had no payload; attempt to send an empty message",
+ RMR_ERR_NOHDR: "message didn't contain a valid header",
+ RMR_ERR_SENDFAILED: "send failed; errno has nano reason",
+ RMR_ERR_CALLFAILED: "unable to send call() message",
+ RMR_ERR_NOWHOPEN: "no wormholes are open",
+ RMR_ERR_WHID: "wormhole id was invalid",
+ RMR_ERR_OVERFLOW: "operation would have busted through a buffer/field size",
+ RMR_ERR_RETRY: "request (send/call/rts) failed, but caller should retry (EAGAIN for wrappers)",
+ RMR_ERR_RCVFAILED: "receive failed (hard error)",
+ RMR_ERR_TIMEOUT: "message processing call timed out",
+ RMR_ERR_UNSET: "the message hasn't been populated with a transport buffer",
+ RMR_ERR_TRUNC: "received message likely truncated",
+ RMR_ERR_INITFAILED: "initialisation of something (probably message) failed",
+}
+
+type MBuf struct {
+ MType int
+ Len int
+ Meid string //Managed entity id (RAN name)*/
+ Payload []byte
+ XAction []byte
+}
+
+func (m MBuf) String() string {
+ return fmt.Sprintf("{ MType: %d, Len: %d, Meid: %q, Xaction: %q, Payload: [%x] }", m.MType, m.Len, m.Meid, m.XAction, m.Payload)
+}
+
+type Context struct {
+ MaxMsgSize int
+ MaxRetries int
+ Flags int
+ RmrCtx unsafe.Pointer
+}
+
+type Messenger interface {
+ Init(port string, maxMsgSize int, maxRetries int, flags int) *Messenger
+ SendMsg(msg *MBuf) (*MBuf, error)
+ RecvMsg() (*MBuf, error)
+ IsReady() bool
+ Close()
+}
+type Config struct {
+ Port int
+ MaxMsgSize int
+ MaxRetries int
+ Flags int
+}