E2Manager/handlers/rmrmsghandlers/ran_lost_connection_handler_test.go

   1 //// Copyright 2019 AT&T Intellectual Property
   2 //// Copyright 2019 Nokia
   3 ////
   4 //// Licensed under the Apache License, Version 2.0 (the "License");
   5 //// you may not use this file except in compliance with the License.
   6 //// You may obtain a copy of the License at
   7 ////
   8 ////      http://www.apache.org/licenses/LICENSE-2.0
   9 ////
  10 //// Unless required by applicable law or agreed to in writing, software
  11 //// distributed under the License is distributed on an "AS IS" BASIS,
  12 //// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 //// See the License for the specific language governing permissions and
  14 //// limitations under the License.
  15
  16 //  This source code is part of the near-RT RIC (RAN Intelligent Controller)
  17 //  platform project (RICP).
  18
  19 package rmrmsghandlers
  20
  21 import (
  22         "bytes"
  23         "e2mgr/clients"
  24         "e2mgr/configuration"
  25         "e2mgr/logger"
  26         "e2mgr/managers"
  27         "e2mgr/mocks"
  28         "e2mgr/models"
  29         "e2mgr/services"
  30         "encoding/json"
  31         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
  32         "github.com/pkg/errors"
  33         "io/ioutil"
  34         "net/http"
  35         "testing"
  36 )
  37
  38 const ranName = "test"
  39 const e2tAddress = "10.10.2.15:9800"
  40
  41 func TestLostConnectionHandlerSuccess(t *testing.T) {
  42         logger, _ := logger.InitLogger(logger.InfoLevel)
  43
  44         notificationRequest := models.NotificationRequest{RanName: ranName}
  45         ranDisconnectionManagerMock := &mocks.RanDisconnectionManagerMock{}
  46         ranDisconnectionManagerMock.On("DisconnectRan", ranName).Return(nil)
  47         handler := NewRanLostConnectionHandler(logger, ranDisconnectionManagerMock)
  48         handler.Handle(&notificationRequest)
  49         ranDisconnectionManagerMock.AssertCalled(t, "DisconnectRan", ranName)
  50 }
  51
  52 func TestLostConnectionHandlerFailure(t *testing.T) {
  53         logger, _ := logger.InitLogger(logger.InfoLevel)
  54
  55         notificationRequest := models.NotificationRequest{RanName: ranName}
  56         ranDisconnectionManagerMock := &mocks.RanDisconnectionManagerMock{}
  57         ranDisconnectionManagerMock.On("DisconnectRan", ranName).Return(errors.New("error"))
  58         handler := NewRanLostConnectionHandler(logger, ranDisconnectionManagerMock)
  59         handler.Handle(&notificationRequest)
  60         ranDisconnectionManagerMock.AssertCalled(t, "DisconnectRan", ranName)
  61 }
  62
  63 func setupLostConnectionHandlerTestWithRealDisconnectionManager(t *testing.T, isSuccessfulHttpPost bool) (RanLostConnectionHandler, *mocks.RnibReaderMock, *mocks.RnibWriterMock, *mocks.HttpClientMock) {
  64         logger, _ := logger.InitLogger(logger.InfoLevel)
  65         config := &configuration.Configuration{RnibRetryIntervalMs: 10, MaxRnibConnectionAttempts: 3}
  66
  67         readerMock := &mocks.RnibReaderMock{}
  68         writerMock := &mocks.RnibWriterMock{}
  69         rnibDataService := services.NewRnibDataService(logger, config, readerMock, writerMock)
  70         e2tInstancesManager := managers.NewE2TInstancesManager(rnibDataService, logger)
  71         httpClientMock := &mocks.HttpClientMock{}
  72         routingManagerClient := clients.NewRoutingManagerClient(logger, config, httpClientMock)
  73         e2tAssociationManager := managers.NewE2TAssociationManager(logger, rnibDataService, e2tInstancesManager, routingManagerClient)
  74         ranDisconnectionManager := managers.NewRanDisconnectionManager(logger, configuration.ParseConfiguration(), rnibDataService, e2tAssociationManager)
  75         handler := NewRanLostConnectionHandler(logger, ranDisconnectionManager)
  76
  77         origNodebInfo := &entities.NodebInfo{RanName: ranName, GlobalNbId: &entities.GlobalNbId{PlmnId: "xxx", NbId: "yyy"}, ConnectionStatus: entities.ConnectionStatus_CONNECTING, AssociatedE2TInstanceAddress: e2tAddress}
  78         var rnibErr error
  79         readerMock.On("GetNodeb", ranName).Return(origNodebInfo, rnibErr)
  80         updatedNodebInfo1 := *origNodebInfo
  81         updatedNodebInfo1.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
  82         writerMock.On("UpdateNodebInfo", &updatedNodebInfo1).Return(rnibErr)
  83         updatedNodebInfo2 := *origNodebInfo
  84         updatedNodebInfo2.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
  85         updatedNodebInfo2.AssociatedE2TInstanceAddress = ""
  86         writerMock.On("UpdateNodebInfo", &updatedNodebInfo2).Return(rnibErr)
  87         e2tInstance := &entities.E2TInstance{Address: e2tAddress, AssociatedRanList: []string{ranName}}
  88         readerMock.On("GetE2TInstance", e2tAddress).Return(e2tInstance, nil)
  89         e2tInstanceToSave := *e2tInstance
  90         e2tInstanceToSave.AssociatedRanList = []string{}
  91         writerMock.On("SaveE2TInstance", &e2tInstanceToSave).Return(nil)
  92         mockHttpClient(httpClientMock, isSuccessfulHttpPost)
  93
  94         return handler, readerMock, writerMock, httpClientMock
  95 }
  96
  97 func mockHttpClient(httpClientMock *mocks.HttpClientMock, isSuccessful bool) {
  98         data := models.RoutingManagerE2TDataList{models.NewRoutingManagerE2TData(e2tAddress, RanName)}
  99         marshaled, _ := json.Marshal(data)
 100         body := bytes.NewBuffer(marshaled)
 101         respBody := ioutil.NopCloser(bytes.NewBufferString(""))
 102         var respStatusCode int
 103         if isSuccessful {
 104                 respStatusCode = http.StatusCreated
 105         } else {
 106                 respStatusCode = http.StatusBadRequest
 107         }
 108         httpClientMock.On("Post", clients.DissociateRanE2TInstanceApiSuffix, "application/json", body).Return(&http.Response{StatusCode: respStatusCode, Body: respBody}, nil)
 109 }
 110
 111 func TestLostConnectionHandlerFailureWithRealDisconnectionManager(t *testing.T) {
 112         handler, readerMock, writerMock, httpClientMock := setupLostConnectionHandlerTestWithRealDisconnectionManager(t, false)
 113
 114         notificationRequest := models.NotificationRequest{RanName: ranName}
 115         handler.Handle(&notificationRequest)
 116
 117         readerMock.AssertExpectations(t)
 118         writerMock.AssertExpectations(t)
 119         httpClientMock.AssertExpectations(t)
 120         writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 2)
 121 }
 122
 123 func TestLostConnectionHandlerSuccessWithRealDisconnectionManager(t *testing.T) {
 124         handler, readerMock, writerMock, httpClientMock := setupLostConnectionHandlerTestWithRealDisconnectionManager(t, true)
 125
 126         notificationRequest := models.NotificationRequest{RanName: ranName}
 127         handler.Handle(&notificationRequest)
 128
 129         readerMock.AssertExpectations(t)
 130         writerMock.AssertExpectations(t)
 131         httpClientMock.AssertExpectations(t)
 132         writerMock.AssertNumberOfCalls(t, "UpdateNodebInfo", 2)
 133 }