push code back with legal issues fix

[ric-plt/e2mgr.git] / E2Manager / services / rmr_service.go

diff --git a/E2Manager/services/rmr_service.go b/E2Manager/services/rmr_service.go
new file mode 100644 (file)
index 0000000..5a8be8b
--- /dev/null
+++ b/E2Manager/services/rmr_service.go
@@ -0,0 +1,137 @@
+//
+// 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.
+//
+
+package services
+
+import (
+       "e2mgr/logger"
+       "e2mgr/managers"
+       "e2mgr/models"
+       "e2mgr/rmrCgo"
+       "e2mgr/sessions"
+       "strconv"
+       "sync"
+)
+
+
+type RmrConfig struct {
+       Port       int
+       MaxMsgSize int
+       Flags      int
+       Logger     *logger.Logger
+}
+
+func NewRmrConfig(port int, maxMsgSize int, flags int, logger *logger.Logger) *RmrConfig {
+       return &RmrConfig{port, maxMsgSize, flags, logger}
+}
+
+// RmrService holds an instance of RMR messenger as well as its configuration
+type RmrService struct {
+       config     *RmrConfig
+       messenger  *rmrCgo.RmrMessenger
+       e2sessions sessions.E2Sessions
+       nManager   *managers.NotificationManager
+       rmrResponse chan *models.NotificationResponse
+}
+
+// NewRmrService instantiates a new Rmr service instance
+func NewRmrService(rmrConfig *RmrConfig, msrImpl rmrCgo.RmrMessenger, e2sessions sessions.E2Sessions, nManager *managers.NotificationManager,
+       rmrResponse chan *models.NotificationResponse) *RmrService {
+
+       return &RmrService{
+               config:     rmrConfig,
+               messenger:  msrImpl.Init("tcp:"+strconv.Itoa(rmrConfig.Port), rmrConfig.MaxMsgSize, rmrConfig.Flags, rmrConfig.Logger),
+               e2sessions: e2sessions,
+               nManager:   nManager,
+               rmrResponse: rmrResponse,
+       }
+}
+
+func (r *RmrService) SendMessage(messageType int, messageChannel chan *models.E2RequestMessage, errorChannel chan error,
+       wg sync.WaitGroup) {
+
+       wg.Add(1)
+       setupRequestMessage := <-messageChannel
+       e2Message := setupRequestMessage.GetMessageAsBytes(r.config.Logger)
+
+       transactionId := []byte(setupRequestMessage.TransactionId())
+
+       msg := rmrCgo.NewMBuf(messageType, len(e2Message)/*r.config.MaxMsgSize*/, setupRequestMessage.RanName(), &e2Message, &transactionId)
+
+       r.config.Logger.Debugf("#rmr_service.SendMessage - Going to send the message: %#v\n", msg)
+       _, err := (*r.messenger).SendMsg(msg, r.config.MaxMsgSize)
+
+       errorChannel <- err
+       wg.Done()
+}
+
+func (r *RmrService) SendRmrMessage(response *models.NotificationResponse) {
+
+       msgAsBytes := response.GetMessageAsBytes(r.config.Logger)
+       transactionIdByteArr := []byte(response.RanName)
+
+       msg := rmrCgo.NewMBuf(response.MgsType, len(msgAsBytes), response.RanName, &msgAsBytes, &transactionIdByteArr)
+
+       r.config.Logger.Debugf("#rmr_service.SendRmrMessage - Going to send the message: %#v\n", msg)
+
+       _, err := (*r.messenger).SendMsg(msg, r.config.MaxMsgSize)
+
+       if err != nil {
+               r.config.Logger.Errorf("#rmr_service.SendRmrMessage - error: %#v\n", err)
+               return
+       }
+}
+
+// ListenAndHandle waits for messages coming from rmr_rcv_msg and sends it to a designated message handler
+func (r *RmrService) ListenAndHandle() {
+
+       for {
+               mbuf, err := (*r.messenger).RecvMsg()
+               r.config.Logger.Debugf("#rmr_service.ListenAndHandle - Going to handle received message: %#v\n", mbuf)
+
+               // TODO: one mbuf received immediately execute goroutine
+               if err != nil {
+                       continue        //TODO log error
+               }
+
+               r.nManager.HandleMessage(r.config.Logger, r.e2sessions, mbuf, r.rmrResponse)
+       }
+}
+
+func (r *RmrService) SendResponse(){
+       for{
+
+               response, ok := <-r.rmrResponse
+               if !ok {
+
+                       r.config.Logger.Errorf("#rmr_service.SendResponse - channel closed")
+                       break
+               }
+
+               r.config.Logger.Debugf("#rmr_service.SendResponse - Going to send message: %#v\n", response)
+               r.SendRmrMessage(response)
+       }
+}
+
+func (r *RmrService) CloseContext() {
+       if r.config.Logger.DebugEnabled(){
+               r.config.Logger.Debugf("#rmr_service.CloseContext - RMR is ready: %v", (*r.messenger).IsReady())
+               (*r.messenger).Close()
+               r.config.Logger.Debugf("#rmr_service.CloseContext - RMR is ready: %v", (*r.messenger).IsReady())
+       }
+}
+