Span.cs

using System.Collections.Generic;
using MessagePack;
using System.Diagnostics;

namespace MockTraceAgent
{
    [MessagePackObject]
    [DebuggerDisplay("TraceId={TraceId}, SpanId={SpanId}, Service={Service}, Name={Name}, Resource={Resource}")]
    public sealed class Span
    {
        [Key("trace_id")]
        public ulong TraceId { get; set; }

        [Key("span_id")]
        public ulong SpanId { get; set; }

        [Key("name")]
        public string? Name { get; set; }

        [Key("resource")]
        public string? Resource { get; set; }

        [Key("service")]
        public string? Service { get; set; }

        [Key("type")]
        public string? Type { get; set; }

        [Key("start")]
        public long Start { get; set; }

        [Key("duration")]
        public long Duration { get; set; }

        [Key("parent_id")]
        public ulong? ParentId { get; set; }

        [Key("error")]
        public byte Error { get; set; }

        [Key("meta")]
        public Dictionary<string, string>? Tags { get; set; }

        [Key("metrics")]
        public Dictionary<string, double>? Metrics { get; set; }

        public override string ToString()
        {
            return $"TraceId={TraceId}, SpanId={SpanId}, Service={Service}, Name={Name}, Resource={Resource}";
        }
    }
}