222 lines
8.0 KiB
Go
222 lines
8.0 KiB
Go
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//
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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 httpmsghandlers
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import (
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"e2mgr/e2managererrors"
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"e2mgr/logger"
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"e2mgr/managers"
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"e2mgr/models"
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"e2mgr/services"
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"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
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"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
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"github.com/go-ozzo/ozzo-validation"
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"github.com/go-ozzo/ozzo-validation/is"
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)
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const (
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X2SetupActivityName = "X2_SETUP"
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EndcSetupActivityName = "ENDC_SETUP"
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)
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type SetupRequestHandler struct {
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rNibDataService services.RNibDataService
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logger *logger.Logger
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ranSetupManager managers.IRanSetupManager
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protocol entities.E2ApplicationProtocol
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e2tAssociationManager *managers.E2TAssociationManager
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e2tInstancesManager managers.IE2TInstancesManager
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}
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func NewSetupRequestHandler(logger *logger.Logger, rNibDataService services.RNibDataService,
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ranSetupManager managers.IRanSetupManager, protocol entities.E2ApplicationProtocol, e2tInstancesManager managers.IE2TInstancesManager, e2tAssociationManager *managers.E2TAssociationManager) *SetupRequestHandler {
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return &SetupRequestHandler{
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logger: logger,
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rNibDataService: rNibDataService,
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ranSetupManager: ranSetupManager,
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protocol: protocol,
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e2tAssociationManager: e2tAssociationManager,
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e2tInstancesManager: e2tInstancesManager,
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}
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}
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func (h *SetupRequestHandler) Handle(request models.Request) (models.IResponse, error) {
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setupRequest := request.(models.SetupRequest)
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err := h.validateRequestDetails(setupRequest)
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if err != nil {
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return nil, err
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}
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nodebInfo, err := h.rNibDataService.GetNodeb(setupRequest.RanName)
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if err != nil {
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_, ok := err.(*common.ResourceNotFoundError)
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if !ok {
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h.logger.Errorf("#SetupRequestHandler.Handle - failed to get nodeB entity for ran name: %v from RNIB. Error: %s", setupRequest.RanName, err)
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return nil, e2managererrors.NewRnibDbError()
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}
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result := h.connectNewRan(&setupRequest, h.protocol)
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return nil, result
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}
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if nodebInfo.ConnectionStatus == entities.ConnectionStatus_SHUTTING_DOWN {
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h.logger.Errorf("#SetupRequestHandler.connectExistingRanWithAssociatedE2TAddress - RAN: %s in wrong state (%s)", nodebInfo.RanName, entities.ConnectionStatus_name[int32(nodebInfo.ConnectionStatus)])
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result := e2managererrors.NewWrongStateError(h.getActivityName(h.protocol), entities.ConnectionStatus_name[int32(nodebInfo.ConnectionStatus)])
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return nil, result
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}
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if len(nodebInfo.AssociatedE2TInstanceAddress) != 0 {
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result := h.connectExistingRanWithAssociatedE2TAddress(nodebInfo)
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return nil, result
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}
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result := h.connectExistingRanWithoutAssociatedE2TAddress(nodebInfo)
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return nil, result
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}
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func createInitialNodeInfo(requestDetails *models.SetupRequest, protocol entities.E2ApplicationProtocol) (*entities.NodebInfo, *entities.NbIdentity) {
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nodebInfo := &entities.NodebInfo{
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Ip: requestDetails.RanIp,
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Port: uint32(requestDetails.RanPort),
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ConnectionStatus: entities.ConnectionStatus_CONNECTING,
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E2ApplicationProtocol: protocol,
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RanName: requestDetails.RanName,
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}
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nbIdentity := &entities.NbIdentity{
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InventoryName: requestDetails.RanName,
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}
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return nodebInfo, nbIdentity
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}
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func (h *SetupRequestHandler) connectExistingRanWithoutAssociatedE2TAddress(nodebInfo *entities.NodebInfo) error {
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e2tAddress, err := h.e2tInstancesManager.SelectE2TInstance()
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if err != nil {
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h.logger.Errorf("#SetupRequestHandler.connectExistingRanWithoutAssociatedE2TAddress - RAN name: %s - failed selecting E2T instance", nodebInfo.RanName)
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if nodebInfo.ConnectionStatus == entities.ConnectionStatus_DISCONNECTED{
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return err
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}
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nodebInfo.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
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updateError := h.rNibDataService.UpdateNodebInfo(nodebInfo)
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if updateError != nil {
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h.logger.Errorf("#SetupRequestHandler.connectExistingRanWithoutAssociatedE2TAddress - RAN name: %s - failed updating nodeb. error: %s", nodebInfo.RanName, updateError)
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}
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return err
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}
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err = h.e2tAssociationManager.AssociateRan(e2tAddress, nodebInfo)
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if err != nil {
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h.logger.Errorf("#SetupRequestHandler.connectExistingRanWithoutAssociatedE2TAddress - RAN name: %s - failed associating ran to e2t address %s. error: %s", nodebInfo.RanName, e2tAddress, err)
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return err
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}
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h.logger.Infof("#SetupRequestHandler.connectExistingRanWithoutAssociatedE2TAddress - RAN name: %s - successfully updated nodeb in rNib", nodebInfo.RanName)
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result := h.ranSetupManager.ExecuteSetup(nodebInfo, entities.ConnectionStatus_CONNECTING)
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return result
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}
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func (h *SetupRequestHandler) connectExistingRanWithAssociatedE2TAddress(nodebInfo *entities.NodebInfo) error {
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status := entities.ConnectionStatus_CONNECTING
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if nodebInfo.ConnectionStatus == entities.ConnectionStatus_CONNECTED {
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status = nodebInfo.ConnectionStatus
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}
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err := h.rNibDataService.UpdateNodebInfo(nodebInfo)
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if err != nil {
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h.logger.Errorf("#SetupRequestHandler.connectExistingRanWithAssociatedE2TAddress - RAN name: %s - failed resetting connection attempts of RAN. error: %s", nodebInfo.RanName, err)
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return e2managererrors.NewRnibDbError()
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}
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h.logger.Infof("#SetupRequestHandler.connectExistingRanWithAssociatedE2TAddress - RAN name: %s - successfully reset connection attempts of RAN", nodebInfo.RanName)
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result := h.ranSetupManager.ExecuteSetup(nodebInfo, status)
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return result
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}
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func (h *SetupRequestHandler) connectNewRan(request *models.SetupRequest, protocol entities.E2ApplicationProtocol) error {
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e2tAddress, err := h.e2tInstancesManager.SelectE2TInstance()
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if err != nil {
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h.logger.Errorf("#SetupRequestHandler.connectNewRan - RAN name: %s - failed selecting E2T instance", request.RanName)
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return err
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}
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nodebInfo, nodebIdentity := createInitialNodeInfo(request, protocol)
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err = h.rNibDataService.SaveNodeb(nodebIdentity, nodebInfo)
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if err != nil {
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h.logger.Errorf("#SetupRequestHandler.connectNewRan - RAN name: %s - failed to save initial nodeb entity in RNIB. error: %s", request.RanName, err)
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return e2managererrors.NewRnibDbError()
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}
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h.logger.Infof("#SetupRequestHandler.connectNewRan - RAN name: %s - initial nodeb entity was saved to rNib", request.RanName)
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err = h.e2tAssociationManager.AssociateRan(e2tAddress, nodebInfo)
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if err != nil {
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h.logger.Errorf("#SetupRequestHandler.connectNewRan - RAN name: %s - failed associating ran to e2t address %s. error: %s", request.RanName, e2tAddress, err)
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return err
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}
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result := h.ranSetupManager.ExecuteSetup(nodebInfo, entities.ConnectionStatus_CONNECTING)
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return result
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}
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func (handler *SetupRequestHandler) validateRequestDetails(request models.SetupRequest) error {
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if request.RanPort == 0 {
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handler.logger.Errorf("#SetupRequestHandler.validateRequestDetails - validation failure: port cannot be zero")
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return e2managererrors.NewRequestValidationError()
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}
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err := validation.ValidateStruct(&request,
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validation.Field(&request.RanIp, validation.Required, is.IP),
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validation.Field(&request.RanName, validation.Required),
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)
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if err != nil {
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handler.logger.Errorf("#SetupRequestHandler.validateRequestDetails - validation failure, error: %v", err)
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return e2managererrors.NewRequestValidationError()
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}
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return nil
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}
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func (handler *SetupRequestHandler) getActivityName(protocol entities.E2ApplicationProtocol) string {
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if protocol == entities.E2ApplicationProtocol_X2_SETUP_REQUEST {
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return X2SetupActivityName
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}
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return EndcSetupActivityName
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}
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