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"
24 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
25 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
31 type E2TInstancesManager struct {
32 rnibDataService services.RNibDataService
37 type IE2TInstancesManager interface {
38 GetE2TInstance(e2tAddress string) (*entities.E2TInstance, error)
39 GetE2TInstances() ([]*entities.E2TInstance, error)
40 GetE2TInstancesNoLogs() ([]*entities.E2TInstance, error)
41 AddE2TInstance(e2tAddress string) error
42 RemoveE2TInstance(e2tInstance *entities.E2TInstance) error
43 SelectE2TInstance() (string, error)
44 AssociateRan(ranName string, e2tAddress string) error
45 DissociateRan(ranName string, e2tAddress string) error
46 ActivateE2TInstance(e2tInstance *entities.E2TInstance) error
47 ResetKeepAliveTimestamp(e2tAddress string) error
50 func NewE2TInstancesManager(rnibDataService services.RNibDataService, logger *logger.Logger) *E2TInstancesManager {
51 return &E2TInstancesManager{
52 rnibDataService: rnibDataService,
57 func (m *E2TInstancesManager) GetE2TInstance(e2tAddress string) (*entities.E2TInstance, error) {
58 e2tInstance, err := m.rnibDataService.GetE2TInstance(e2tAddress)
62 _, ok := err.(*common.ResourceNotFoundError)
65 m.logger.Errorf("#E2TInstancesManager.GetE2TInstance - E2T Instance address: %s - Failed retrieving E2TInstance. error: %s", e2tAddress, err)
67 m.logger.Infof("#E2TInstancesManager.GetE2TInstance - E2T Instance address: %s not found on DB", e2tAddress)
71 return e2tInstance, err
74 func (m *E2TInstancesManager) GetE2TInstancesNoLogs() ([]*entities.E2TInstance, error) {
75 e2tAddresses, err := m.rnibDataService.GetE2TAddressesNoLogs()
78 _, ok := err.(*common.ResourceNotFoundError)
81 m.logger.Errorf("#E2TInstancesManager.GetE2TInstancesNoLogs - Failed retrieving E2T addresses. error: %s", err)
86 if len(e2tAddresses) == 0 {
87 return []*entities.E2TInstance{}, nil
90 e2tInstances, err := m.rnibDataService.GetE2TInstancesNoLogs(e2tAddresses)
93 _, ok := err.(*common.ResourceNotFoundError)
96 m.logger.Errorf("#E2TInstancesManager.GetE2TInstancesNoLogs - Failed retrieving E2T instances list. error: %s", err)
98 return e2tInstances, err
101 return e2tInstances, nil
104 func (m *E2TInstancesManager) GetE2TInstances() ([]*entities.E2TInstance, error) {
105 e2tAddresses, err := m.rnibDataService.GetE2TAddresses()
108 m.logger.Errorf("#E2TInstancesManager.GetE2TInstances - Failed retrieving E2T addresses. error: %s", err)
112 if len(e2tAddresses) == 0 {
113 m.logger.Infof("#E2TInstancesManager.GetE2TInstances - Empty E2T addresses list")
114 return []*entities.E2TInstance{}, nil
117 e2tInstances, err := m.rnibDataService.GetE2TInstances(e2tAddresses)
120 m.logger.Errorf("#E2TInstancesManager.GetE2TInstances - Failed retrieving E2T instances list. error: %s", err)
121 return e2tInstances, err
124 if len(e2tInstances) == 0 {
125 m.logger.Warnf("#E2TInstancesManager.GetE2TInstances - Empty E2T instances list")
126 return e2tInstances, nil
129 return e2tInstances, nil
132 func (m *E2TInstancesManager) ResetKeepAliveTimestampsForAllE2TInstances() {
134 e2tInstances, err := m.GetE2TInstances()
137 m.logger.Errorf("E2TInstancesManager.ResetKeepAliveTimestampForAllE2TInstances - Couldn't reset timestamps due to a DB error")
141 if len(e2tInstances) == 0 {
142 m.logger.Infof("E2TInstancesManager.ResetKeepAliveTimestampForAllE2TInstances - No instances, ignoring reset")
146 for _, v := range e2tInstances {
148 if v.State != entities.Active {
152 v.KeepAliveTimestamp = time.Now().UnixNano()
154 err := m.rnibDataService.SaveE2TInstance(v)
157 m.logger.Errorf("E2TInstancesManager.ResetKeepAliveTimestampForAllE2TInstances - E2T address: %s - failed resetting e2t instance keep alive timestamp. error: %s", v.Address, err)
161 m.logger.Infof("E2TInstancesManager.ResetKeepAliveTimestampForAllE2TInstances - Done with reset")
164 func findActiveE2TInstanceWithMinimumAssociatedRans(e2tInstances []*entities.E2TInstance) *entities.E2TInstance {
165 var minInstance *entities.E2TInstance
166 minAssociatedRanCount := math.MaxInt32
168 for _, v := range e2tInstances {
169 if v.State == entities.Active && len(v.AssociatedRanList) < minAssociatedRanCount {
170 minAssociatedRanCount = len(v.AssociatedRanList)
178 func (m *E2TInstancesManager) AddE2TInstance(e2tAddress string) error {
183 e2tInstance := entities.NewE2TInstance(e2tAddress)
184 err := m.rnibDataService.SaveE2TInstance(e2tInstance)
187 m.logger.Errorf("#E2TInstancesManager.AddE2TInstance - E2T Instance address: %s - Failed saving E2T instance. error: %s", e2tInstance.Address, err)
191 e2tAddresses, err := m.rnibDataService.GetE2TAddresses()
195 _, ok := err.(*common.ResourceNotFoundError)
198 m.logger.Errorf("#E2TInstancesManager.AddE2TInstance - E2T Instance address: %s - Failed retrieving E2T addresses list. error: %s", e2tInstance.Address, err)
203 e2tAddresses = append(e2tAddresses, e2tInstance.Address)
205 err = m.rnibDataService.SaveE2TAddresses(e2tAddresses)
208 m.logger.Errorf("#E2TInstancesManager.AddE2TInstance - E2T Instance address: %s - Failed saving E2T addresses list. error: %s", e2tInstance.Address, err)
212 m.logger.Infof("#E2TInstancesManager.AddE2TInstance - E2T Instance address: %s - successfully added E2T instance", e2tInstance.Address)
216 func (m *E2TInstancesManager) DissociateRan(ranName string, e2tAddress string) error {
221 e2tInstance, err := m.rnibDataService.GetE2TInstance(e2tAddress)
224 m.logger.Errorf("#E2TInstancesManager.DissociateRan - E2T Instance address: %s - Failed retrieving E2TInstance. error: %s", e2tAddress, err)
228 i := 0 // output index
229 for _, v := range e2tInstance.AssociatedRanList {
231 // copy and increment index
232 e2tInstance.AssociatedRanList[i] = v
237 e2tInstance.AssociatedRanList = e2tInstance.AssociatedRanList[:i]
239 err = m.rnibDataService.SaveE2TInstance(e2tInstance)
242 m.logger.Errorf("#E2TInstancesManager.DissociateRan - E2T Instance address: %s - Failed saving E2TInstance. error: %s", e2tAddress, err)
246 m.logger.Infof("#E2TInstancesManager.DissociateRan - successfully dissociated RAN %s from E2T %s", ranName, e2tInstance.Address)
250 func (m *E2TInstancesManager) RemoveE2TInstance(e2tInstance *entities.E2TInstance) error {
253 func (m *E2TInstancesManager) SelectE2TInstance() (string, error) {
255 e2tInstances, err := m.GetE2TInstances()
258 return "", e2managererrors.NewRnibDbError()
261 if len(e2tInstances) == 0 {
262 m.logger.Errorf("#E2TInstancesManager.SelectE2TInstance - No E2T instance found")
263 return "", e2managererrors.NewE2TInstanceAbsenceError()
266 min := findActiveE2TInstanceWithMinimumAssociatedRans(e2tInstances)
269 m.logger.Errorf("#E2TInstancesManager.SelectE2TInstance - No active E2T instance found")
270 return "", e2managererrors.NewE2TInstanceAbsenceError()
273 m.logger.Infof("#E2TInstancesManager.SelectE2TInstance - successfully selected E2T instance. address: %s", min.Address)
274 return min.Address, nil
277 func (m *E2TInstancesManager) AssociateRan(ranName string, e2tAddress string) error {
282 e2tInstance, err := m.rnibDataService.GetE2TInstance(e2tAddress)
285 m.logger.Errorf("#E2TInstancesManager.AssociateRan - E2T Instance address: %s - Failed retrieving E2TInstance. error: %s", e2tAddress, err)
286 return e2managererrors.NewRnibDbError()
289 e2tInstance.AssociatedRanList = append(e2tInstance.AssociatedRanList, ranName)
291 err = m.rnibDataService.SaveE2TInstance(e2tInstance)
294 m.logger.Errorf("#E2TInstancesManager.AssociateRan - E2T Instance address: %s - Failed saving E2TInstance. error: %s", e2tAddress, err)
295 return e2managererrors.NewRnibDbError()
298 m.logger.Infof("#E2TInstancesManager.AssociateRan - successfully associated RAN %s with E2T %s", ranName, e2tInstance.Address)
302 func (h E2TInstancesManager) ActivateE2TInstance(e2tInstance *entities.E2TInstance) error{
304 if e2tInstance == nil {
305 h.logger.Errorf("#E2TInstancesManager.ActivateE2TInstance - e2tInstance empty")
306 return e2managererrors.NewInternalError()
309 h.logger.Infof("#E2TInstancesManager.ActivateE2TInstance - E2T Address: %s - activate E2T instance", e2tInstance.Address)
311 e2tInstance.State = entities.Active
312 e2tInstance.KeepAliveTimestamp = time.Now().UnixNano()
314 err := h.rnibDataService.SaveE2TInstance(e2tInstance)
316 h.logger.Errorf("#E2TInstancesManager.ActivateE2TInstance - E2T Instance address: %s - Failed saving E2TInstance. error: %s", e2tInstance.Address, err)
322 func (m *E2TInstancesManager) ResetKeepAliveTimestamp(e2tAddress string) error {
327 e2tInstance, err := m.rnibDataService.GetE2TInstanceNoLogs(e2tAddress)
330 m.logger.Errorf("#E2TInstancesManager.ResetKeepAliveTimestamp - E2T Instance address: %s - Failed retrieving E2TInstance. error: %s", e2tAddress, err)
334 if e2tInstance.State == entities.ToBeDeleted || e2tInstance.State == entities.RoutingManagerFailure {
335 m.logger.Warnf("#E2TInstancesManager.ResetKeepAliveTimestamp - Ignore. This Instance is about to deleted")
340 e2tInstance.KeepAliveTimestamp = time.Now().UnixNano()
341 err = m.rnibDataService.SaveE2TInstanceNoLogs(e2tInstance)
344 m.logger.Errorf("#E2TInstancesManager.ResetKeepAliveTimestamp - E2T Instance address: %s - Failed saving E2TInstance. error: %s", e2tAddress, err)