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.
21 "e2mgr/e2managererrors"
27 "e2mgr/services/rmrsender"
28 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
31 type RanSetupManager struct {
33 rnibDataService services.RNibDataService
34 rmrSender *rmrsender.RmrSender
37 type IRanSetupManager interface {
38 ExecuteSetup(nodebInfo *entities.NodebInfo, status entities.ConnectionStatus) error
41 func NewRanSetupManager(logger *logger.Logger, rmrSender *rmrsender.RmrSender, rnibDataService services.RNibDataService) *RanSetupManager {
42 return &RanSetupManager{
44 rnibDataService: rnibDataService,
49 // Update retries and connection status
50 func (m *RanSetupManager) updateConnectionStatus(nodebInfo *entities.NodebInfo, status entities.ConnectionStatus) error {
51 // Update retries and connection status
52 nodebInfo.ConnectionStatus = status
53 nodebInfo.ConnectionAttempts++
54 err := m.rnibDataService.UpdateNodebInfo(nodebInfo)
56 m.logger.Errorf("#RanSetupManager.updateConnectionStatus - Ran name: %s - Failed updating RAN's connection status to %v : %s", nodebInfo.RanName, status, err)
58 m.logger.Infof("#RanSetupManager.updateConnectionStatus - Ran name: %s - Successfully updated rNib. RAN's current connection status: %v, RAN's current connection attempts: %d", nodebInfo.RanName, status, nodebInfo.ConnectionAttempts)
63 // Decrement retries and connection status (disconnected)
64 func (m *RanSetupManager) updateConnectionStatusDisconnected(nodebInfo *entities.NodebInfo) error {
65 // Update retries and connection status
66 nodebInfo.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
67 nodebInfo.ConnectionAttempts--
68 err := m.rnibDataService.UpdateNodebInfo(nodebInfo)
70 m.logger.Errorf("#RanSetupManager.updateConnectionStatusDisconnected - Ran name: %s - Failed updating RAN's connection status to DISCONNECTED : %s", nodebInfo.RanName, err)
72 m.logger.Infof("#RanSetupManager.updateConnectionStatusDisconnected - Ran name: %s - Successfully updated rNib. RAN's current connection status: DISCONNECTED, RAN's current connection attempts: %d", nodebInfo.RanName, nodebInfo.ConnectionAttempts)
77 func (m *RanSetupManager) prepareSetupRequest(nodebInfo *entities.NodebInfo) (int, *models.E2RequestMessage, error) {
78 // Build the endc/x2 setup request
79 switch nodebInfo.E2ApplicationProtocol {
80 case entities.E2ApplicationProtocol_X2_SETUP_REQUEST:
81 rmrMsgType := rmrCgo.RIC_X2_SETUP_REQ
82 request := models.NewE2RequestMessage(nodebInfo.RanName /*tid*/, nodebInfo.Ip, uint16(nodebInfo.Port), nodebInfo.RanName, e2pdus.PackedX2setupRequest)
83 return rmrMsgType, request, nil
84 case entities.E2ApplicationProtocol_ENDC_X2_SETUP_REQUEST:
85 rmrMsgType := rmrCgo.RIC_ENDC_X2_SETUP_REQ
86 request := models.NewE2RequestMessage(nodebInfo.RanName /*tid*/, nodebInfo.Ip, uint16(nodebInfo.Port), nodebInfo.RanName, e2pdus.PackedEndcX2setupRequest)
87 return rmrMsgType, request, nil
90 m.logger.Errorf("#RanSetupManager.prepareSetupRequest - Unsupported nodebInfo.E2ApplicationProtocol %d ", nodebInfo.E2ApplicationProtocol)
91 return 0, nil, e2managererrors.NewInternalError()
94 // ExecuteSetup updates the connection status and number of attempts in the nodebInfo and send an endc/x2 setup request to establish a connection with the RAN
95 func (m *RanSetupManager) ExecuteSetup(nodebInfo *entities.NodebInfo, status entities.ConnectionStatus) error {
97 // Update retries and connection status
98 if err := m.updateConnectionStatus(nodebInfo, status); err != nil {
99 return e2managererrors.NewRnibDbError()
102 // Build the endc/x2 setup request
103 rmrMsgType, request, err := m.prepareSetupRequest(nodebInfo)
108 // Send the endc/x2 setup request
110 msg := models.NewRmrMessage(rmrMsgType, nodebInfo.RanName, request.GetMessageAsBytes(m.logger), xAction)
112 err = m.rmrSender.Send(msg)
115 m.logger.Errorf("#RanSetupManager.ExecuteSetup - failed sending setup request to RMR: %s", err)
117 err := m.updateConnectionStatusDisconnected(nodebInfo)
119 // Decrement retries and connection status (disconnected)
121 return e2managererrors.NewRnibDbError()
124 return e2managererrors.NewRmrError()