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).
27 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
30 type IRanReconnectionManager interface {
31 ReconnectRan(inventoryName string) error
34 type RanReconnectionManager struct {
36 config *configuration.Configuration
37 rnibDataService services.RNibDataService
38 ranSetupManager *RanSetupManager
39 e2tInstancesManager IE2TInstancesManager
42 func NewRanReconnectionManager(logger *logger.Logger, config *configuration.Configuration, rnibDataService services.RNibDataService, ranSetupManager *RanSetupManager, e2tInstancesManager IE2TInstancesManager) *RanReconnectionManager {
43 return &RanReconnectionManager{
46 rnibDataService: rnibDataService,
47 ranSetupManager: ranSetupManager,
48 e2tInstancesManager: e2tInstancesManager,
52 func (m *RanReconnectionManager) isRanExceededConnectionAttempts(nodebInfo *entities.NodebInfo) bool {
53 return int(nodebInfo.GetConnectionAttempts()) >= m.config.MaxConnectionAttempts
56 func (m *RanReconnectionManager) ReconnectRan(inventoryName string) error {
57 nodebInfo, rnibErr := m.rnibDataService.GetNodeb(inventoryName)
60 m.logger.Errorf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Failed fetching RAN from rNib. Error: %v", inventoryName, rnibErr)
64 m.logger.Infof("#RanReconnectionManager.ReconnectRan - RAN name: %s - RAN's connection status: %s, RAN's connection attempts: %d", nodebInfo.RanName, nodebInfo.ConnectionStatus, nodebInfo.ConnectionAttempts)
66 if !m.canReconnectRan(nodebInfo) {
67 e2tAddress := nodebInfo.AssociatedE2TInstanceAddress
68 err := m.updateUnconnectableRan(nodebInfo)
74 if m.isRanExceededConnectionAttempts(nodebInfo) {
75 return m.e2tInstancesManager.RemoveRanFromInstance(nodebInfo.RanName, e2tAddress)
81 err := m.ranSetupManager.ExecuteSetup(nodebInfo, entities.ConnectionStatus_CONNECTING)
84 m.logger.Errorf("#RanReconnectionManager.ReconnectRan - RAN name: %s - Failed executing setup. Error: %v", inventoryName, err)
91 func (m *RanReconnectionManager) canReconnectRan(nodebInfo *entities.NodebInfo) bool {
92 connectionStatus := nodebInfo.GetConnectionStatus()
93 return connectionStatus != entities.ConnectionStatus_SHUT_DOWN && connectionStatus != entities.ConnectionStatus_SHUTTING_DOWN &&
94 int(nodebInfo.GetConnectionAttempts()) < m.config.MaxConnectionAttempts
97 func (m *RanReconnectionManager) updateNodebInfo(nodebInfo *entities.NodebInfo, connectionStatus entities.ConnectionStatus, resetE2tAddress bool) error {
99 nodebInfo.ConnectionStatus = connectionStatus;
102 nodebInfo.AssociatedE2TInstanceAddress = ""
105 err := m.rnibDataService.UpdateNodebInfo(nodebInfo)
108 m.logger.Errorf("#RanReconnectionManager.updateNodebInfo - RAN name: %s - Failed updating RAN's connection status to %s in rNib. Error: %v", nodebInfo.RanName, connectionStatus, err)
112 m.logger.Infof("#RanReconnectionManager.updateNodebInfo - RAN name: %s - Successfully updated rNib. RAN's current connection status: %s", nodebInfo.RanName, nodebInfo.ConnectionStatus)
116 func (m *RanReconnectionManager) updateUnconnectableRan(nodebInfo *entities.NodebInfo) error {
117 connectionStatus := nodebInfo.GetConnectionStatus()
119 if connectionStatus == entities.ConnectionStatus_SHUT_DOWN {
120 m.logger.Warnf("#RanReconnectionManager.updateUnconnectableRan - RAN name: %s - Cannot reconnect RAN. Reason: connection status is SHUT_DOWN", nodebInfo.RanName)
124 if connectionStatus == entities.ConnectionStatus_SHUTTING_DOWN {
125 m.logger.Warnf("#RanReconnectionManager.updateUnconnectableRan - RAN name: %s - Cannot reconnect RAN. Reason: connection status is SHUTTING_DOWN", nodebInfo.RanName)
126 return m.updateNodebInfo(nodebInfo, entities.ConnectionStatus_SHUT_DOWN, false)
129 if m.isRanExceededConnectionAttempts(nodebInfo) {
130 m.logger.Warnf("#RanReconnectionManager.updateUnconnectableRan - RAN name: %s - Cannot reconnect RAN. Reason: RAN's connection attempts exceeded the limit (%d)", nodebInfo.RanName, m.config.MaxConnectionAttempts)
131 return m.updateNodebInfo(nodebInfo, entities.ConnectionStatus_DISCONNECTED, true)