DiagnosticChannelFormatter.cs

Go to the documentation of this file.

using System;
using System.Collections.Generic;
 
using IKVM.CoreLib.Diagnostics;
 
namespace IKVM.Tools.Core.Diagnostics
{
 
    abstract class DiagnosticChannelFormatter<TOptions> : IDiagnosticFormatter, IDisposable
        where TOptions : DiagnosticChannelFormatterOptions
    {
 
        readonly TOptions _options;
 
        public DiagnosticChannelFormatter(TOptions options)
        {
            _options = options ?? throw new ArgumentNullException(nameof(options));
        }
 
        public void Write(in DiagnosticEvent @event)
        {
            // find the writer for the event's level
            var channel = @event.Diagnostic.Level switch
            {
                DiagnosticLevel.Trace => _options.TraceChannel,
                DiagnosticLevel.Info => _options.InfoChannel,
                DiagnosticLevel.Warning => _options.WarningChannel,
                DiagnosticLevel.Error => _options.ErrorChannel,
                DiagnosticLevel.Fatal => _options.FatalChannel,
                _ => throw new InvalidOperationException(),
            };
 
            // no channel found for level
            if (channel == null)
                return;
 
            WriteImpl(@event, channel);
        }
 
        protected abstract void WriteImpl(in DiagnosticEvent @event, IDiagnosticChannel channel);
 
        public virtual void Dispose()
        {
            var hs = new HashSet<IDisposable>();
 
            if (_options.TraceChannel is IDisposable trace && hs.Add(trace))
                trace.Dispose();
            if (_options.InfoChannel is IDisposable info && hs.Add(info))
                info.Dispose();
            if (_options.WarningChannel is IDisposable warning && hs.Add(warning))
                warning.Dispose();
            if (_options.ErrorChannel is IDisposable error && hs.Add(error))
                error.Dispose();
            if (_options.FatalChannel is IDisposable fatal && hs.Add(fatal))
                fatal.Dispose();
        }
 
    }
 
}