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.
17 // This source code is part of the near-RT RIC (RAN Intelligent Controller)
18 // platform project (RICP).
23 // #cgo LDFLAGS: -L/usr/local/lib -lrmr_si
24 // #include <rmr/rmr.h>
25 // #include <stdlib.h>
29 "github.com/pkg/errors"
37 func (*Context) Init(port string, maxMsgSize int, flags int, logger *logger.Logger) RmrMessenger {
39 defer C.free(unsafe.Pointer(pp))
40 logger.Debugf("#rmrCgoApi.Init - Going to initiate RMR router")
41 ctx := NewContext(maxMsgSize, flags, C.rmr_init(pp, C.int(maxMsgSize), C.int(flags)), logger)
43 //TODO use time.Ticker()
45 time.Sleep(time.Second)
46 if time.Since(start) >= time.Minute {
47 logger.Debugf("#rmrCgoApi.Init - Routing table is not ready")
51 logger.Infof("#rmrCgoApi.Init - RMR router has been initiated")
53 // Configure the rmr to make rounds of attempts to send a message before notifying the application that it should retry.
54 // Each round is about 1000 attempts with a short sleep between each round.
55 C.rmr_set_stimeout(ctx.RmrCtx, C.int(1000))
56 r := RmrMessenger(ctx)
60 func (ctx *Context) SendMsg(msg *MBuf, printLogs bool) (*MBuf, error) {
61 ctx.checkContextInitialized()
62 ctx.Logger.Debugf("#rmrCgoApi.SendMsg - Going to send message. MBuf: %v", *msg)
63 allocatedCMBuf := ctx.getAllocatedCRmrMBuf(ctx.Logger, msg, ctx.MaxMsgSize)
64 state := allocatedCMBuf.state
66 errorMessage := fmt.Sprintf("#rmrCgoApi.SendMsg - Failed to get allocated message. state: %v - %s", state, states[int(state)])
67 return nil, errors.New(errorMessage)
71 //TODO: if debug enabled
72 transactionId := string(*msg.XAction)
73 tmpTid := strings.TrimSpace(transactionId)
74 ctx.Logger.Infof("[E2 Manager -> RMR] #rmrCgoApi.SendMsg - Going to send message %v for transaction id: %s", *msg, tmpTid)
77 currCMBuf := C.rmr_send_msg(ctx.RmrCtx, allocatedCMBuf)
78 defer C.rmr_free_msg(currCMBuf)
80 errorMessage := fmt.Sprintf("#rmrCgoApi.SendMsg - currCMBuf is empty hence return from message")
81 return nil, errors.New(errorMessage)
84 state = currCMBuf.state
87 errorMessage := fmt.Sprintf("#rmrCgoApi.SendMsg - Failed to send message. state: %v - %s", state, states[int(state)])
88 return nil, errors.New(errorMessage)
91 return convertToMBuf(ctx.Logger, currCMBuf), nil
94 func (ctx *Context) WhSendMsg(msg *MBuf, printLogs bool) (*MBuf, error) {
95 ctx.checkContextInitialized()
96 ctx.Logger.Debugf("#rmrCgoApi.WhSendMsg - Going to wormhole send message. MBuf: %v", *msg)
98 whid := C.rmr_wh_open(ctx.RmrCtx, (*C.char)(msg.GetMsgSrc())) // open direct connection, returns wormhole ID
99 ctx.Logger.Infof("#rmrCgoApi.WhSendMsg - The wormhole id %v has been received", whid)
100 defer C.rmr_wh_close(ctx.RmrCtx, whid)
102 allocatedCMBuf := ctx.getAllocatedCRmrMBuf(ctx.Logger, msg, ctx.MaxMsgSize)
103 state := allocatedCMBuf.state
105 errorMessage := fmt.Sprintf("#rmrCgoApi.WhSendMsg - Failed to get allocated message. state: %v - %s", state, states[int(state)])
106 return nil, errors.New(errorMessage)
110 transactionId := string(*msg.XAction)
111 tmpTid := strings.TrimSpace(transactionId)
112 ctx.Logger.Infof("[E2 Manager -> RMR] #rmrCgoApi.WhSendMsg - Going to send message %v for transaction id: %s", *msg, tmpTid)
115 currCMBuf := C.rmr_wh_send_msg(ctx.RmrCtx, whid, allocatedCMBuf)
116 defer C.rmr_free_msg(currCMBuf)
118 state = currCMBuf.state
121 errorMessage := fmt.Sprintf("#rmrCgoApi.WhSendMsg - Failed to send message. state: %v - %s", state, states[int(state)])
122 return nil, errors.New(errorMessage)
125 return convertToMBuf(ctx.Logger, currCMBuf), nil
129 func (ctx *Context) RecvMsg() (*MBuf, error) {
130 ctx.checkContextInitialized()
131 ctx.Logger.Debugf("#rmrCgoApi.RecvMsg - Going to receive message")
132 allocatedCMBuf := C.rmr_alloc_msg(ctx.RmrCtx, C.int(ctx.MaxMsgSize))
134 currCMBuf := C.rmr_rcv_msg(ctx.RmrCtx, allocatedCMBuf)
135 defer C.rmr_free_msg(currCMBuf)
137 state := currCMBuf.state
140 errorMessage := fmt.Sprintf("#rmrCgoApi.RecvMsg - Failed to receive message. state: %v - %s", state, states[int(state)])
141 ctx.Logger.Errorf(errorMessage)
142 return nil, errors.New(errorMessage)
145 mbuf := convertToMBuf(ctx.Logger, currCMBuf)
147 if mbuf.MType != E2_TERM_KEEP_ALIVE_RESP {
149 transactionId := string(*mbuf.XAction)
150 tmpTid := strings.TrimSpace(transactionId)
151 ctx.Logger.Infof("[RMR -> E2 Manager] #rmrCgoApi.RecvMsg - message %v has been received for transaction id: %s", *mbuf, tmpTid)
156 func (ctx *Context) IsReady() bool {
157 ctx.Logger.Debugf("#rmrCgoApi.IsReady - Going to check if routing table is initialized")
158 return int(C.rmr_ready(ctx.RmrCtx)) != 0
161 func (ctx *Context) Close() {
162 ctx.Logger.Debugf("#rmrCgoApi.Close - Going to close RMR context")
163 C.rmr_close(ctx.RmrCtx)
164 time.Sleep(100 * time.Millisecond)