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.
18 // This source code is part of the near-RT RIC (RAN Intelligent Controller)
19 // platform project (RICP).
27 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
28 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
32 type IE2TShutdownManager interface {
33 Shutdown(e2tInstance *entities.E2TInstance) error
36 type E2TShutdownManager struct {
38 config *configuration.Configuration
39 rnibDataService services.RNibDataService
40 e2TInstancesManager IE2TInstancesManager
41 e2tAssociationManager *E2TAssociationManager
42 ranSetupManager IRanSetupManager
45 func NewE2TShutdownManager(logger *logger.Logger, config *configuration.Configuration, rnibDataService services.RNibDataService, e2TInstancesManager IE2TInstancesManager, e2tAssociationManager *E2TAssociationManager, ranSetupManager IRanSetupManager) E2TShutdownManager {
46 return E2TShutdownManager{
49 rnibDataService: rnibDataService,
50 e2TInstancesManager: e2TInstancesManager,
51 e2tAssociationManager: e2tAssociationManager,
52 ranSetupManager: ranSetupManager,
56 func (m E2TShutdownManager) Shutdown(e2tInstance *entities.E2TInstance) error {
57 m.logger.Infof("#E2TShutdownManager.Shutdown - E2T %s is Dead, RIP", e2tInstance.Address)
59 isE2tInstanceBeingDeleted := m.isE2tInstanceAlreadyBeingDeleted(e2tInstance)
60 if isE2tInstanceBeingDeleted {
61 m.logger.Infof("#E2TShutdownManager.Shutdown - E2T %s is already being deleted", e2tInstance.Address)
65 err := m.markE2tInstanceToBeDeleted(e2tInstance)
67 m.logger.Errorf("#E2TShutdownManager.Shutdown - Failed to mark E2T %s as 'ToBeDeleted'.", e2tInstance.Address)
71 ranNamesToBeDissociated := []string{}
72 ranNamesToBeAssociated := make(map[string][]string) // e2tAddress -> associatedRanList
74 for _, ranName := range e2tInstance.AssociatedRanList {
75 err = m.reAssociateRanInMemory(ranName, ranNamesToBeAssociated, ranNamesToBeDissociated)
77 m.logger.Errorf("#E2TShutdownManager.Shutdown - Failed to re-associate nodeb %s.", ranName)
82 err = m.e2tAssociationManager.RemoveE2tInstance(e2tInstance.Address, ranNamesToBeDissociated, ranNamesToBeAssociated)
84 m.logger.Errorf("#E2TShutdownManager.Shutdown - Failed to remove E2T %s.", e2tInstance.Address)
88 err = m.clearNodebsAssociation(ranNamesToBeDissociated)
90 m.logger.Errorf("#E2TShutdownManager.Shutdown - Failed to clear nodebs association to E2T %s.", e2tInstance.Address)
94 err = m.reassociateNodebs(ranNamesToBeAssociated)
96 m.logger.Errorf("#E2TShutdownManager.Shutdown - Failed to re-associate nodebs after killing E2T %s.", e2tInstance.Address)
103 func (m E2TShutdownManager) reassociateNodebs(ranNamesToBeAssociated map[string][]string) error {
104 for e2tAddress, ranNames := range ranNamesToBeAssociated {
106 err := m.associateAndSetupNodebs(ranNames, e2tAddress)
115 func (m E2TShutdownManager) clearNodebsAssociation(ranNamesToBeDissociated []string) error {
116 return m.associateAndSetupNodebs(ranNamesToBeDissociated, "")
119 func (m E2TShutdownManager) associateAndSetupNodebs(ranNamesToBeUpdated []string, e2tAddress string) error {
120 for _, ranName := range ranNamesToBeUpdated {
121 nodeb, err := m.rnibDataService.GetNodeb(ranName)
123 m.logger.Warnf("#E2TShutdownManager.associateAndSetupNodebs - Failed to get nodeb %s from db.", ranName)
124 _, ok := err.(*common.ResourceNotFoundError)
130 nodeb.AssociatedE2TInstanceAddress = e2tAddress
131 err = m.rnibDataService.UpdateNodebInfo(nodeb)
133 m.logger.Errorf("#E2TShutdownManager.associateAndSetupNodebs - Failed to save nodeb %s from db.", ranName)
137 shouldSendSetup := len(e2tAddress) > 0
139 err = m.ranSetupManager.ExecuteSetup(nodeb, entities.ConnectionStatus_CONNECTING)
141 m.logger.Errorf("#E2TShutdownManager.associateAndSetupNodebs - Failed to execute Setup for nodeb %s.", ranName)
149 func (m E2TShutdownManager) reAssociateRanInMemory(ranName string, ranNamesToBeAssociated map[string][]string, ranNamesToBeDissociated []string) error {
150 nodeb, err := m.rnibDataService.GetNodeb(ranName)
153 _, ok := err.(*common.ResourceNotFoundError)
156 m.logger.Errorf("#E2TShutdownManager.reAssociateRanInMemory - Failed to get nodeb %s from db.", ranName)
160 m.logger.Errorf("#E2TShutdownManager.reAssociateRanInMemory - nodeb %s not found in db. dissociating it...", ranName)
161 ranNamesToBeDissociated = append(ranNamesToBeDissociated, ranName)
165 if nodeb.ConnectionStatus == entities.ConnectionStatus_SHUTTING_DOWN || nodeb.ConnectionStatus == entities.ConnectionStatus_SHUT_DOWN {
166 m.logger.Errorf("#E2TShutdownManager.reAssociateRanInMemory - nodeb %s status is %s. dissociating it...", ranName, nodeb.ConnectionStatus)
167 ranNamesToBeDissociated = append(ranNamesToBeDissociated, ranName)
171 selectedE2tAddress, err := m.e2TInstancesManager.SelectE2TInstance()
173 m.logger.Infof("#E2TShutdownManager.reAssociateRanInMemory - No selected E2T instance for nodeb %s found.", ranName)
174 ranNamesToBeDissociated = append(ranNamesToBeDissociated, ranName)
178 ranNamesToBeAssociated[selectedE2tAddress] = append(ranNamesToBeAssociated[selectedE2tAddress], ranName)
182 func (m E2TShutdownManager) markE2tInstanceToBeDeleted(e2tInstance *entities.E2TInstance) error {
183 e2tInstance.State = entities.ToBeDeleted
184 e2tInstance.DeletionTimestamp = time.Now().UnixNano()
186 return m.rnibDataService.SaveE2TInstance(e2tInstance)
189 func (m E2TShutdownManager) isE2tInstanceAlreadyBeingDeleted(e2tInstance *entities.E2TInstance) bool {
190 delta := time.Now().UnixNano() - e2tInstance.DeletionTimestamp
191 timestampNanosec := int64(time.Duration(m.config.E2TInstanceDeletionTimeoutMs) * time.Millisecond)
193 return delta <= timestampNanosec