JsonDiagnosticFormatter.cs

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using System;
using System.Buffers;
using System.Text;
 
using IKVM.CoreLib.Buffers;
using IKVM.CoreLib.Diagnostics;
 
namespace IKVM.Tools.Core.Diagnostics
{
 
    class JsonDiagnosticFormatter : DiagnosticChannelFormatter<JsonDiagnosticFormatterOptions>
    {
 
        public JsonDiagnosticFormatter(JsonDiagnosticFormatterOptions options) :
            base(options)
        {
 
        }
 
        protected override void WriteImpl(in DiagnosticEvent @event, IDiagnosticChannel channel)
        {
            var encoding = channel.Encoding ?? Encoding.UTF8;
            using var buffer = MemoryPool<byte>.Shared.Rent(65535);
            var writer = new MemoryBufferWriter<byte>(buffer.Memory);
            JsonDiagnosticFormat.Write(@event.Diagnostic.Id, @event.Diagnostic.Level, @event.Diagnostic.Message, @event.Args, @event.Exception, @event.Location, ref writer, encoding);
            WriteLine(writer, encoding);
            channel.Writer.Write(buffer, writer.WrittenCount);
            return;
        }
 
        void WriteLine(MemoryBufferWriter<byte> writer, Encoding encoding)
        {
            var buf = (Span<byte>)stackalloc byte[8];
            var len = encoding.GetBytes(Environment.NewLine, buf);
            writer.Write(buf[..len]);
        }
 
    }
 
}