132 lines
4.9 KiB
Go
132 lines
4.9 KiB
Go
//
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// Copyright 2019 AT&T Intellectual Property
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// Copyright 2019 Nokia
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This source code is part of the near-RT RIC (RAN Intelligent Controller)
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// platform project (RICP).
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package managers
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import (
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"e2mgr/e2managererrors"
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"e2mgr/e2pdus"
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"e2mgr/logger"
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"e2mgr/models"
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"e2mgr/rmrCgo"
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"e2mgr/services"
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"e2mgr/services/rmrsender"
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"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
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"unsafe"
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)
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type RanSetupManager struct {
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logger *logger.Logger
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rnibDataService services.RNibDataService
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rmrSender *rmrsender.RmrSender
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}
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type IRanSetupManager interface {
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ExecuteSetup(nodebInfo *entities.NodebInfo, status entities.ConnectionStatus) error
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}
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func NewRanSetupManager(logger *logger.Logger, rmrSender *rmrsender.RmrSender, rnibDataService services.RNibDataService) *RanSetupManager {
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return &RanSetupManager{
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logger: logger,
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rnibDataService: rnibDataService,
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rmrSender: rmrSender,
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}
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}
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// Update retries and connection status
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func (m *RanSetupManager) updateConnectionStatus(nodebInfo *entities.NodebInfo, status entities.ConnectionStatus) error {
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// Update retries and connection status
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nodebInfo.ConnectionStatus = status
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err := m.rnibDataService.UpdateNodebInfo(nodebInfo)
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if err != nil {
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m.logger.Errorf("#RanSetupManager.updateConnectionStatus - Ran name: %s - Failed updating RAN's connection status to %v : %s", nodebInfo.RanName, status, err)
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} else {
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m.logger.Infof("#RanSetupManager.updateConnectionStatus - Ran name: %s - Successfully updated rNib. RAN's current connection status: %v", nodebInfo.RanName, status)
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}
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return err
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}
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// Decrement retries and connection status (disconnected)
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func (m *RanSetupManager) updateConnectionStatusDisconnected(nodebInfo *entities.NodebInfo) error {
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// Update retries and connection status
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nodebInfo.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
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err := m.rnibDataService.UpdateNodebInfo(nodebInfo)
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if err != nil {
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m.logger.Errorf("#RanSetupManager.updateConnectionStatusDisconnected - Ran name: %s - Failed updating RAN's connection status to DISCONNECTED : %s", nodebInfo.RanName, err)
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} else {
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m.logger.Infof("#RanSetupManager.updateConnectionStatusDisconnected - Ran name: %s - Successfully updated rNib. RAN's current connection status: DISCONNECTED", nodebInfo.RanName)
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}
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return err
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}
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func (m *RanSetupManager) prepareSetupRequest(nodebInfo *entities.NodebInfo) (int, *models.E2RequestMessage, error) {
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// Build the endc/x2 setup request
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switch nodebInfo.E2ApplicationProtocol {
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case entities.E2ApplicationProtocol_X2_SETUP_REQUEST:
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rmrMsgType := rmrCgo.RIC_X2_SETUP_REQ
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request := models.NewE2RequestMessage(nodebInfo.RanName /*tid*/, nodebInfo.Ip, uint16(nodebInfo.Port), nodebInfo.RanName, e2pdus.PackedX2setupRequest)
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return rmrMsgType, request, nil
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case entities.E2ApplicationProtocol_ENDC_X2_SETUP_REQUEST:
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rmrMsgType := rmrCgo.RIC_ENDC_X2_SETUP_REQ
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request := models.NewE2RequestMessage(nodebInfo.RanName /*tid*/, nodebInfo.Ip, uint16(nodebInfo.Port), nodebInfo.RanName, e2pdus.PackedEndcX2setupRequest)
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return rmrMsgType, request, nil
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}
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m.logger.Errorf("#RanSetupManager.prepareSetupRequest - Unsupported nodebInfo.E2ApplicationProtocol %d ", nodebInfo.E2ApplicationProtocol)
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return 0, nil, e2managererrors.NewInternalError()
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}
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// 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
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func (m *RanSetupManager) ExecuteSetup(nodebInfo *entities.NodebInfo, status entities.ConnectionStatus) error {
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// Update retries and connection status
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if err := m.updateConnectionStatus(nodebInfo, status); err != nil {
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return e2managererrors.NewRnibDbError()
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}
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// Build the endc/x2 setup request
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rmrMsgType, request, err := m.prepareSetupRequest(nodebInfo)
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if err != nil {
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return err
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}
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// Send the endc/x2 setup request
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var xAction []byte
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var msgSrc unsafe.Pointer
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msg := models.NewRmrMessage(rmrMsgType, nodebInfo.RanName, request.GetMessageAsBytes(m.logger), xAction, msgSrc)
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err = m.rmrSender.Send(msg)
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if err != nil {
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m.logger.Errorf("#RanSetupManager.ExecuteSetup - failed sending setup request to RMR: %s", err)
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err := m.updateConnectionStatusDisconnected(nodebInfo)
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// Decrement retries and connection status (disconnected)
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if err != nil {
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return e2managererrors.NewRnibDbError()
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}
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return e2managererrors.NewRmrError()
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}
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return nil
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}
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