[RICPLT-2157] Restructure handlers and converters.......

[ric-plt/e2mgr.git] / E2Manager / handlers / httpmsghandlers / delete_all_request_handler.go

diff --git a/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go b/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go
new file mode 100644 (file)
index 0000000..6e70deb
--- /dev/null
+++ b/E2Manager/handlers/httpmsghandlers/delete_all_request_handler.go
@@ -0,0 +1,176 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 2019 Nokia
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package httpmsghandlers
+
+import "C"
+import (
+       "e2mgr/configuration"
+       "e2mgr/e2managererrors"
+       "e2mgr/logger"
+       "e2mgr/models"
+       "e2mgr/rNibWriter"
+       "e2mgr/rmrCgo"
+       "e2mgr/services"
+       "e2mgr/stateMachine"
+       "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
+       "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/reader"
+       "time"
+)
+
+type DeleteAllRequestHandler struct {
+       readerProvider func() reader.RNibReader
+       writerProvider func() rNibWriter.RNibWriter
+       rmrService *services.RmrService
+       config *configuration.Configuration
+}
+
+func NewDeleteAllRequestHandler(rmrService *services.RmrService, config *configuration.Configuration, writerProvider func() rNibWriter.RNibWriter, readerProvider func() reader.RNibReader) *DeleteAllRequestHandler {
+       return &DeleteAllRequestHandler {
+               readerProvider: readerProvider,
+               writerProvider: writerProvider,
+               rmrService: rmrService,
+               config: config,
+       }
+}
+
+func (handler *DeleteAllRequestHandler) Handle(logger *logger.Logger, request models.Request) error {
+
+       err, continueFlow := handler.updateNodebStates(logger, false)
+       if err != nil {
+               return err
+       }
+
+       if continueFlow == false{
+               return nil
+       }
+
+       //TODO change to rmr_request
+       response := models.NotificationResponse{MgsType: rmrCgo.RIC_SCTP_CLEAR_ALL}
+       if err:= handler.rmrService.SendRmrMessage(&response); err != nil {
+               logger.Errorf("#DeleteAllRequestHandler.Handle - failed to send sctp clear all message to RMR: %s", err)
+               return  e2managererrors.NewRmrError()
+       }
+
+       time.Sleep(time.Duration(handler.config.BigRedButtonTimeoutSec) * time.Second)
+       logger.Infof("#DeleteAllRequestHandler.Handle - timer expired")
+
+       err, _ = handler.updateNodebStates(logger, true)
+       if err != nil {
+               return err
+       }
+
+       return nil
+}
+
+func (handler *DeleteAllRequestHandler) updateNodebStates(logger *logger.Logger, timeoutExpired bool) (error, bool){
+       nbIdentityList, err := handler.readerProvider().GetListNodebIds()
+
+       if err != nil {
+               logger.Errorf("#DeleteAllRequestHandler.updateNodebStates - failed to get nodes list from RNIB. Error: %s", err.Error())
+               return e2managererrors.NewRnibDbError(), false
+       }
+
+       if len(nbIdentityList) == 0 {
+               return nil, false
+       }
+
+       numOfRanToShutDown := 0
+       for _,nbIdentity := range nbIdentityList{
+
+               node, err := handler.readerProvider().GetNodeb((*nbIdentity).GetInventoryName())
+
+               if err != nil {
+                       logger.Errorf("#DeleteAllRequestHandler.updateNodebStates - failed to get nodeB entity for ran name: %v from RNIB. Error: %s",
+                               (*nbIdentity).GetInventoryName(), err.Error())
+                       continue
+               }
+
+               if timeoutExpired{
+
+                       if handler.saveNodebShutDownState(logger, nbIdentity, node){
+                               numOfRanToShutDown++
+                       }
+                       continue
+               }
+               if handler.saveNodebNextState(logger, nbIdentity, node){
+                       numOfRanToShutDown++
+               }
+       }
+
+       if numOfRanToShutDown > 0{
+               logger.Infof("#DeleteAllRequestHandler.updateNodebStates - update nodebs states in RNIB completed")
+       }else {
+               logger.Infof("#DeleteAllRequestHandler.updateNodebStates - nodebs states are not updated ")
+               return nil, false
+       }
+
+       return nil, true
+}
+
+func (handler *DeleteAllRequestHandler) saveNodebNextState(logger *logger.Logger, nbIdentity *entities.NbIdentity, node *entities.NodebInfo) bool{
+
+       if node.ConnectionStatus == entities.ConnectionStatus_SHUTTING_DOWN{
+               return true
+       }
+
+       nextStatus, res := stateMachine.NodeNextStateDeleteAll(node.ConnectionStatus)
+       if res == false {
+               return false
+       }
+
+       node.ConnectionStatus = nextStatus
+
+       err := handler.writerProvider().SaveNodeb(nbIdentity, node)
+
+       if err != nil {
+               logger.Errorf("#DeleteAllRequestHandler.saveNodebNextState - failed to save nodeB entity for inventory name: %v to RNIB. Error: %s",
+                       (*nbIdentity).GetInventoryName(), err.Error())
+               return false
+       }
+
+       if logger.DebugEnabled() {
+               logger.Debugf("#DeleteAllRequestHandler.saveNodebNextState - connection status of inventory name: %v changed to %v",
+                       (*nbIdentity).GetInventoryName(), nextStatus.String())
+       }
+       return true
+}
+
+func (handler *DeleteAllRequestHandler) saveNodebShutDownState(logger *logger.Logger, nbIdentity *entities.NbIdentity, node *entities.NodebInfo) bool{
+
+       if node.ConnectionStatus == entities.ConnectionStatus_SHUT_DOWN{
+               return false
+       }
+
+       if node.ConnectionStatus != entities.ConnectionStatus_SHUTTING_DOWN {
+               logger.Errorf("#DeleteAllRequestHandler.saveNodebShutDownState - ignore, status is not Shutting Down, inventory name: %v ", (*nbIdentity).GetInventoryName())
+               return false
+       }
+
+       node.ConnectionStatus = entities.ConnectionStatus_SHUT_DOWN
+
+       err := handler.writerProvider().SaveNodeb(nbIdentity, node)
+
+       if err != nil {
+               logger.Errorf("#DeleteAllRequestHandler.saveNodebShutDownState - failed to save nodeB entity for inventory name: %v to RNIB. Error: %s",
+                       (*nbIdentity).GetInventoryName(), err.Error())
+               return false
+       }
+
+       logger.Errorf("#DeleteAllRequestHandler.saveNodebShutDownState - Shut Down , inventory name: %v ", (*nbIdentity).GetInventoryName())
+       return true
+}