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.
24 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
27 type IRanReconnectionManager interface {
28 ReconnectRan(inventoryName string) error
31 type RanReconnectionManager struct {
33 config *configuration.Configuration
34 rnibDataService services.RNibDataService
35 ranSetupManager *RanSetupManager
36 e2tInstancesManager IE2TInstancesManager
39 func NewRanReconnectionManager(logger *logger.Logger, config *configuration.Configuration, rnibDataService services.RNibDataService, ranSetupManager *RanSetupManager, e2tInstancesManager IE2TInstancesManager) *RanReconnectionManager {
40 return &RanReconnectionManager{
43 rnibDataService: rnibDataService,
44 ranSetupManager: ranSetupManager,
45 e2tInstancesManager: e2tInstancesManager,
49 func (m *RanReconnectionManager) isRanExceededConnectionAttempts(nodebInfo *entities.NodebInfo) bool {
50 return int(nodebInfo.GetConnectionAttempts()) >= m.config.MaxConnectionAttempts
53 func (m *RanReconnectionManager) ReconnectRan(inventoryName string) error {
54 nodebInfo, rnibErr := m.rnibDataService.GetNodeb(inventoryName)
57 m.logger.Errorf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Failed fetching RAN from rNib. Error: %v", inventoryName, rnibErr)
61 m.logger.Infof("#RanReconnectionManager.ReconnectRan - RAN name: %s - RAN's connection status: %s, RAN's connection attempts: %d", nodebInfo.RanName, nodebInfo.ConnectionStatus, nodebInfo.ConnectionAttempts)
63 if !m.canReconnectRan(nodebInfo) {
64 err := m.setConnectionStatusOfUnconnectableRan(nodebInfo)
70 if m.isRanExceededConnectionAttempts(nodebInfo) {
71 return m.e2tInstancesManager.DeassociateRan(nodebInfo.RanName, nodebInfo.AssociatedE2TInstanceAddress)
77 err := m.ranSetupManager.ExecuteSetup(nodebInfo, entities.ConnectionStatus_CONNECTING)
80 m.logger.Errorf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Failed executing setup. Error: %v", inventoryName, err)
87 func (m *RanReconnectionManager) canReconnectRan(nodebInfo *entities.NodebInfo) bool {
88 connectionStatus := nodebInfo.GetConnectionStatus()
89 return connectionStatus != entities.ConnectionStatus_SHUT_DOWN && connectionStatus != entities.ConnectionStatus_SHUTTING_DOWN &&
90 int(nodebInfo.GetConnectionAttempts()) < m.config.MaxConnectionAttempts
93 func (m *RanReconnectionManager) updateNodebInfoStatus(nodebInfo *entities.NodebInfo, connectionStatus entities.ConnectionStatus) error {
94 if nodebInfo.ConnectionStatus == connectionStatus {
98 nodebInfo.ConnectionStatus = connectionStatus;
99 err := m.rnibDataService.UpdateNodebInfo(nodebInfo)
102 m.logger.Errorf("#RanReconnectionManager.updateNodebInfoStatus - RAN name: %s - Failed updating RAN's connection status to %s in rNib. Error: %v", nodebInfo.RanName, connectionStatus, err)
106 m.logger.Infof("#RanReconnectionManager.updateNodebInfoStatus - RAN name: %s - Successfully updated rNib. RAN's current connection status: %s", nodebInfo.RanName, nodebInfo.ConnectionStatus)
110 func (m *RanReconnectionManager) setConnectionStatusOfUnconnectableRan(nodebInfo *entities.NodebInfo) error {
111 connectionStatus := nodebInfo.GetConnectionStatus()
113 if connectionStatus == entities.ConnectionStatus_SHUT_DOWN {
114 m.logger.Warnf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Cannot reconnect RAN. Reason: connection status is SHUT_DOWN", nodebInfo.RanName)
118 if connectionStatus == entities.ConnectionStatus_SHUTTING_DOWN {
119 m.logger.Warnf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Cannot reconnect RAN. Reason: connection status is SHUTTING_DOWN", nodebInfo.RanName)
120 return m.updateNodebInfoStatus(nodebInfo, entities.ConnectionStatus_SHUT_DOWN)
123 if m.isRanExceededConnectionAttempts(nodebInfo) {
124 m.logger.Warnf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Cannot reconnect RAN. Reason: RAN's connection attempts exceeded the limit (%d)", nodebInfo.RanName, m.config.MaxConnectionAttempts)
125 return m.updateNodebInfoStatus(nodebInfo, entities.ConnectionStatus_DISCONNECTED)