反序列化对象时引发YamlDotNet异常

Question

所以，我是Yaml和YamlDotNet的新手。我写了下面的代码来解析我用来配置客户端API的yaml文件……

public bool TryGet(string path, out DiagnosticScannerConfig config)
{
    var deserializer = new DeserializerBuilder()
        .WithNamingConvention(new HyphenatedNamingConvention())
        .Build();

    try
    {
        using (var reader = File.OpenText(path))
        {
            var deserializedConfig = deserializer.Deserialize<InternalDiagnosticScannerConfig>(reader);

            config = new DiagnosticScannerConfigImpl(deserializedConfig);
            return true;
        }
    }
    catch (Exception e)
    {
        config = DiagnosticAnalyzerConfigCache.Default;
        return true;
    }
}

public interface DiagnosticScannerConfig
{
    DiagnosticAnalyzerConfig Analyzer { get; }
}

public interface DiagnosticAnalyzerConfig
{
    uint HighClosureRateWarningThreshold { get; }
    uint HighCreationRateWarningThreshold { get; }
    uint QueueHighFlowThreshold { get; }
    uint QueueLowFlowThreshold { get; }
    decimal MessageRedeliveryCoefficient { get; }
    decimal SocketUsageCoefficient { get; }
    decimal RuntimeProcessUsageCoefficient { get; }
    decimal FileDescriptorUsageWarningCoefficient { get; }
    decimal ConsumerUtilizationWarningCoefficient { get; }
}

class DiagnosticScannerConfigImpl : DiagnosticScannerConfig
{
    public DiagnosticScannerConfigImpl(InternalDiagnosticScannerConfig config)
    {
        Analyzer = new DiagnosticAnalyzerConfigImpl(config.Analyzer);
    }

    class DiagnosticAnalyzerConfigImpl : DiagnosticAnalyzerConfig
    {
        public DiagnosticAnalyzerConfigImpl(Analyzer config)
        {
            HighClosureRateWarningThreshold = config.HighClosureRateWarningThreshold;
            HighCreationRateWarningThreshold = config.HighCreationRateWarningThreshold;
            QueueHighFlowThreshold = config.QueueHighFlowThreshold;
            QueueLowFlowThreshold = config.QueueLowFlowThreshold;
            MessageRedeliveryCoefficient = config.MessageRedeliveryCoefficient;
            SocketUsageCoefficient = config.SocketUsageCoefficient;
            RuntimeProcessUsageCoefficient = config.RuntimeProcessUsageCoefficient;
            FileDescriptorUsageWarningCoefficient = config.FileDescriptorUsageWarningCoefficient;
            ConsumerUtilizationWarningCoefficient = config.ConsumerUtilizationWarningCoefficient;
        }

        public uint HighClosureRateWarningThreshold { get; }
        public uint HighCreationRateWarningThreshold { get; }
        public uint QueueHighFlowThreshold { get; }
        public uint QueueLowFlowThreshold { get; }
        public decimal MessageRedeliveryCoefficient { get; }
        public decimal SocketUsageCoefficient { get; }
        public decimal RuntimeProcessUsageCoefficient { get; }
        public decimal FileDescriptorUsageWarningCoefficient { get; }
        public decimal ConsumerUtilizationWarningCoefficient { get; }
    }

    public DiagnosticAnalyzerConfig Analyzer { get; }
}


public class Analyzer
{
    [YamlMember(Alias = "high-closure-rate-warning-threshold")]
    public uint HighClosureRateWarningThreshold { get; set; }

    [YamlMember(Alias = "high-creation-rate-warning-threshold")]
    public uint HighCreationRateWarningThreshold { get; set; }

    [YamlMember(Alias = "queue-high-flow-threshold")]
    public uint QueueHighFlowThreshold { get; set; }

    [YamlMember(Alias = "queue-low-flow-threshold")]
    public uint QueueLowFlowThreshold { get; set; }

    [YamlMember(Alias = "message-redelivery-coefficient")]
    public decimal MessageRedeliveryCoefficient { get; set; }

    [YamlMember(Alias = "socket-usage-coefficient")]
    public decimal SocketUsageCoefficient { get; set; }

    [YamlMember(Alias = "runtime-process-usage-coefficient")]
    public decimal RuntimeProcessUsageCoefficient { get; set; }

    [YamlMember(Alias = "file-descriptor-usage-warning-coefficient")]
    public decimal FileDescriptorUsageWarningCoefficient { get; set; }

    [YamlMember(Alias = "consumer-utilization-warning-coefficient")]
    public decimal ConsumerUtilizationWarningCoefficient { get; set; }
}

public class InternalDiagnosticScannerConfig
{
    public Analyzer Analyzer { get; }
}

我尝试解析以下yaml文件：

---
    high-closure-rate-warning-threshold:  90
    high-creation-rate-warning-threshold: 60
    queue-high-flow-threshold:  90
    queue-low-flow-threshold: 10
    message-redelivery-coefficient: 0.60
    socket-usage-coefficient: 0.60
    runtime-process-usage-coefficient:  0.65
    file-descriptor-usage-warning-coefficient:  0.65
    consumer-utilization-warning-coefficient: 0.65
...

当我执行上面的代码时，我得到了以下错误：

System.Runtime.Serialization.SerializationException：：(行: 2，列: 5，Idx: 8) -(行: 2，列: 5，Idx: 8)：反序列化过程中出现异常->在类型'HareDu.Diagnostics.Configuration.InternalDiagnosticScannerConfig'.上未找到YamlDotNet.Core.YamlException属性'high-closure-rate-warning-threshold‘在YamlDotNet.Serialization.TypeInspectors.TypeInspectorSkeleton.GetProperty(Type类型，对象容器，字符串名称，布尔值)在YamlDotNet.Serialization.NodeDeserializers.ObjectNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser解析器，类型expectedType，函数nestedObjectDeserializer，对象和值)在YamlDotNet.Serialization.NodeDeserializers.ObjectNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser解析器，类型expectedType，SerializerState状态，IValueDeserializer nestedObjectDeserializer) -内部异常堆栈跟踪的结束-在YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser解析器，类型expectedType，SerializerState状态，在YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser解析器处，键入expectedType，SerializerState状态，IValueDeserializer nestedObjectDeserializer)在YamlDotNet.Serialization.Deserializer.Deserialize(IParser解析器处，类型类型)在/Users/albert/Documents/Git/HareDu2/src/HareDu.Diagnostics/Configuration/DiagnosticScannerConfigProvider.cs:line 59中，在YamlDotNet.Serialization.Deserializer.DeserializeT处HareDu.Diagnostics.Configuration.DiagnosticScannerConfigProvider.TryGet(String路径处，诊断扫描配置和配置

Answer 1

异常消息告诉您问题:您的类型InternalDiagnosticScannerConfig没有“高闭合率-警告-阈值”属性。实际上，在您的代码中，该属性是在Analyzer类中定义的。您应该反序列化到该类型，或者更新您的YAML，使其结构反映您的类。

在实践中，可以使用以下两种方法：

deserializer.Deserialize<InternalDiagnosticScannerConfig>(reader);

或者这样：

---
analyzer:
    high-closure-rate-warning-threshold:  90
    high-creation-rate-warning-threshold: 60
    queue-high-flow-threshold:  90
    queue-low-flow-threshold: 10
    message-redelivery-coefficient: 0.60
    socket-usage-coefficient: 0.60
    runtime-process-usage-coefficient:  0.65
    file-descriptor-usage-warning-coefficient:  0.65
    consumer-utilization-warning-coefficient: 0.65
...