Question

FindOneAndReplace可能会或可能不会替换MongoDB中的文档。响应表明该操作已成功，但是在MongoDB中，它根本没有更新。

MongoDB服务器版本为MongoDB服务器版本：3.2.0 此错误在Ubuntu 16.04和macOS Mojave中可重现。目标主机是Azure CosmosDB。

驱动程序版本为mongo-go-driver@v0.0.17

func (s *Service) DeleteFileMetadata(ctx context.Context, req *pb.DocumentRequest) (*pb.DocumentResponse, error) {
    log.Println("[INFO] Requesting DeleteFileMetadata service")

    if ok := isStateAvailable(); !ok {
        log.Printf("[ERROR] %s\n", errServiceUnavailable.Error())
        return nil, status.Error(codes.Unavailable, errServiceUnavailable.Error())
    }

    if err := refreshMongoDBConnection(mongoDBWriter, &conf.DocumentDB.Writer); err != nil {
        log.Printf("[ERROR] %s\n", err.Error())
        return nil, status.Error(codes.Internal, err.Error())
    }

    if req == nil {
        log.Printf("[ERROR] %s\n", errNilRequest.Error())
        return nil, status.Error(codes.InvalidArgument, errNilRequest.Error())
    }

    fileMetadataParameters := req.GetFileMetadataParameters()
    if fileMetadataParameters == nil || fileMetadataParameters.GetDuid() == "" {

        log.Printf("[ERROR] %s\n", errInvalidFileMetadataParameters.Error())
        return nil, status.Error(codes.InvalidArgument, errInvalidFileMetadataParameters.Error())
    }

    if err := ValidateDUID(fileMetadataParameters.GetDuid()); err != nil {
        log.Printf("[ERROR] %s\n", err.Error())
        return nil, status.Error(codes.InvalidArgument, err.Error())
    }

    if err := ValidateUUID(fileMetadataParameters.GetUuid()); err != nil {
        log.Printf("[ERROR] %s\n", err.Error())
        return nil, status.Error(codes.InvalidArgument, err.Error())
    }

    if err := ValidateFUID(fileMetadataParameters.GetFuid()); err != nil {
        log.Printf("[ERROR] %s\n", err.Error())
        return nil, status.Error(codes.InvalidArgument, err.Error())
    }

    if fileMetadataParameters.Media > pb.FileType_VIDEO {
        return nil, status.Error(codes.InvalidArgument, errMediaType.Error())
    }

    log.Printf("[INFO] FileMetadataParameters: \n%v\n\n", pretty.Sprint(req.GetFileMetadataParameters()))

    // Get the specific lock if it already exists, else make the lock
    lock, _ := duidClientLocker.LoadOrStore(fileMetadataParameters.GetDuid(), &sync.RWMutex{})
    // Lock
    lock.(*sync.RWMutex).Lock()
    // Unlock before the function exits
    defer lock.(*sync.RWMutex).Unlock()

    collection := mongoDBWriter.Database(conf.DocumentDB.Name).Collection(conf.DocumentDB.Collection)

    // Find all MongoDB documents for the specific uuid
    filter := bson.NewDocument(
        bson.EC.String("duid", fileMetadataParameters.GetDuid()),
        bson.EC.String("uuid", fileMetadataParameters.GetUuid()),
    )
    bsonResult := collection.FindOne(context.Background(), filter)
    if bsonResult == nil {
        log.Printf("[ERROR] FindOne: %s\n", errNoDocumentFound.Error())
        return nil, status.Error(codes.InvalidArgument, errNoDocumentFound.Error())
    }
    documentToUpdate := &pb.Document{}
    if err := bsonResult.Decode(documentToUpdate); err != nil {
        log.Printf("[ERROR] Document not found, duid: %s - uuid: %s - err: %s\n",
            fileMetadataParameters.GetDuid(), fileMetadataParameters.GetUuid(), err.Error())

        return nil, status.Errorf(codes.InvalidArgument,
            "Document not found, duid: %s - uuid: %s",
            fileMetadataParameters.GetDuid(), fileMetadataParameters.GetUuid())
    }

    log.Printf("[INFO] Document to update: \n%s\n\n", pretty.Sprint(documentToUpdate))

    switch fileMetadataParameters.Media {
    case pb.FileType_FILE:
        delete(documentToUpdate.GetFileUrlsMap(), fileMetadataParameters.GetFuid())
    case pb.FileType_AUDIO:
        delete(documentToUpdate.GetAudioUrlsMap(), fileMetadataParameters.GetFuid())
    case pb.FileType_IMAGE:
        delete(documentToUpdate.GetImageUrlsMap(), fileMetadataParameters.GetFuid())
    case pb.FileType_VIDEO:
        delete(documentToUpdate.GetVideoUrlsMap(), fileMetadataParameters.GetFuid())
    default:
        return nil, status.Error(codes.InvalidArgument, errMediaType.Error())
    }
    documentToUpdate.UpdateTimestamp = time.Now().UTC().Unix()

    // option to return the the document after update
    option := findopt.ReplaceOneBundle{}
    result := collection.FindOneAndReplace(context.Background(), filter, documentToUpdate,
        option.ReturnDocument(mongoopt.After))

    // Extract the updated MongoDB document
    if result == nil {
        log.Printf("[ERROR] Extracting updated document, duid: %s - uuid: %s\n",
            documentToUpdate.GetDuid(), documentToUpdate.GetUuid())

        return nil, status.Errorf(codes.Internal,
            "Extracting updated document duid: %s - uuid: %s",
            documentToUpdate.GetDuid(), documentToUpdate.GetUuid())
    }

    document := &pb.Document{}
    if err := result.Decode(document); err != nil {
        log.Printf("[ERROR] %s\n", err.Error())
        return nil, status.Errorf(codes.Internal, err.Error())
    }

    log.Printf("[INFO] Updated document: \n%s\n\n", pretty.Sprint(document))
    log.Printf("[INFO] Success deleting file metadata in document, duid: %s - uuid: %s - fuid: %s\n",
        document.GetDuid(), document.GetUuid(), fileMetadataParameters.GetFuid())

    return &pb.DocumentResponse{
        Status:  &pb.DocumentResponse_Code{Code: uint32(codes.OK)},
        Message: codes.OK.String(),
        Data:    document,
    }, nil
}

我希望响应能够反映出MongoDB服务器中数据的实际状态。

让我们说我想删除文件05ce38e7-a29a-485f-bf20-eef3501867f0的文件元数据

我收到此响应，指示已将其删除。响应是从result := collection.FindOneAndReplace(context.Background(), filter, documentToUpdate, option.ReturnDocument(mongoopt.After))

解码的

 ImageUrlsMap:         {217706a5-2f88-4eb2-8a93-c1426c5ac944: "https://hwscdevstorage.blob.core.windows.net/images/hulkgif.png",
                        4ff30392-8ec8-45a4-ba94-5e22c4a686df: "https://hwscdevstorage.blob.core.windows.net/images/Rotating_earth_(large).gif"},
 AudioUrlsMap:         {4ff30392-8ec8-45a4-ba94-5e22c4a686df: "https://hwscdevstorage.blob.core.windows.net/audios/Milad Hosseini - Deli Asheghetam [128].mp3",
                        8fe5fea7-f683-4198-8c94-f27601a5e2d0: "https://hwscdevstorage.blob.core.windows.net/audios/Seger_Conga_CaboMexico_Tag_Acousonde_20140313_112313_8000_3_BreedingMigrating.wav"},
 VideoUrlsMap:         {4ff30392-8ec8-45a4-ba94-5e22c4a686de: "https://hwscdevstorage.blob.core.windows.net/videos/videoplayback.wmv",
                        4ff30392-8ec8-45a4-ba94-5e22c4a686df: "https://hwscdevstorage.blob.core.windows.net/videos/videoplayback.mp4",
                        e525ca9c-9813-4286-abda-8bd0eb6e94b4: "https://hwscdevstorage.blob.core.windows.net/videos/pusheen.mp4"},
 FileUrlsMap:          {13df1afa-4eee-470e-b9e2-60b2a7584994: "https://hwscdevstorage.blob.core.windows.net/videos/videoplayback.wmv",
                        4ff30392-8ec8-45a4-ba94-5e22c4a686df: "https://hwscdevstorage.blob.core.windows.net/videos/videoplayback.mp4",
                        b7a16e10-ac03-468f-9b6d-dcc684d1147f: "https://hwscdevstorage.blob.core.windows.net/videos/pusheen.mp4"},
 RecordTimestamp:      1514764800,
 CreateTimestamp:      1539831496,
 UpdateTimestamp:      1546183549,
 IsPublic:             true,
 XXX_NoUnkeyedLiteral: {},
 XXX_unrecognized:     [],
 XXX_sizecache:        0}

2018/12/30 07:25:49 [INFO] Success deleting file metadata in document, duid: 1ChHfmKs8GX7D1XVf61lwVdisWf - uuid: 0XXXXSNJG0MQJHBF4QX1EFD6Y3 - fuid: 05ce38e7-a29a-485f-bf20-eef3501867f0

但是，如果我转到Azure CosmosDB或在我的本地服务器中，它仍然存在。 screenshot

Answer 1

无法重现MongoDB Server 3.4中的错误

使用mongo-go-driver与MongoDB的数据不一致

1 个答案: