79 lines
2.9 KiB
C#
79 lines
2.9 KiB
C#
#if HAVE_TRACE_WRITER
|
|
using System;
|
|
using System.Diagnostics;
|
|
using DiagnosticsTrace = System.Diagnostics.Trace;
|
|
|
|
namespace LC.Newtonsoft.Json.Serialization
|
|
{
|
|
/// <summary>
|
|
/// Represents a trace writer that writes to the application's <see cref="TraceListener"/> instances.
|
|
/// </summary>
|
|
public class DiagnosticsTraceWriter : ITraceWriter
|
|
{
|
|
/// <summary>
|
|
/// Gets the <see cref="TraceLevel"/> that will be used to filter the trace messages passed to the writer.
|
|
/// For example a filter level of <see cref="TraceLevel.Info"/> will exclude <see cref="TraceLevel.Verbose"/> messages and include <see cref="TraceLevel.Info"/>,
|
|
/// <see cref="TraceLevel.Warning"/> and <see cref="TraceLevel.Error"/> messages.
|
|
/// </summary>
|
|
/// <value>
|
|
/// The <see cref="TraceLevel"/> that will be used to filter the trace messages passed to the writer.
|
|
/// </value>
|
|
public TraceLevel LevelFilter { get; set; }
|
|
|
|
private TraceEventType GetTraceEventType(TraceLevel level)
|
|
{
|
|
switch (level)
|
|
{
|
|
case TraceLevel.Error:
|
|
return TraceEventType.Error;
|
|
case TraceLevel.Warning:
|
|
return TraceEventType.Warning;
|
|
case TraceLevel.Info:
|
|
return TraceEventType.Information;
|
|
case TraceLevel.Verbose:
|
|
return TraceEventType.Verbose;
|
|
default:
|
|
throw new ArgumentOutOfRangeException(nameof(level));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes the specified trace level, message and optional exception.
|
|
/// </summary>
|
|
/// <param name="level">The <see cref="TraceLevel"/> at which to write this trace.</param>
|
|
/// <param name="message">The trace message.</param>
|
|
/// <param name="ex">The trace exception. This parameter is optional.</param>
|
|
public void Trace(TraceLevel level, string message, Exception ex)
|
|
{
|
|
if (level == TraceLevel.Off)
|
|
{
|
|
return;
|
|
}
|
|
|
|
TraceEventCache eventCache = new TraceEventCache();
|
|
TraceEventType traceEventType = GetTraceEventType(level);
|
|
|
|
foreach (TraceListener listener in DiagnosticsTrace.Listeners)
|
|
{
|
|
if (!listener.IsThreadSafe)
|
|
{
|
|
lock (listener)
|
|
{
|
|
listener.TraceEvent(eventCache, "Newtonsoft.Json", traceEventType, 0, message);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
listener.TraceEvent(eventCache, "Newtonsoft.Json", traceEventType, 0, message);
|
|
}
|
|
|
|
if (DiagnosticsTrace.AutoFlush)
|
|
{
|
|
listener.Flush();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif |