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DebugEventSink.cs
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DebugEventSink.cs
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using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
namespace Waher.Events
{
/// <summary>
/// Outputs events to the console standard output.
/// </summary>
public class DebugEventSink : EventSink
{
private const int TabWidth = 8;
/// <summary>
/// Outputs events to the console standard output.
/// </summary>
public DebugEventSink()
: base("Debug Event Sink")
{
}
/// <summary>
/// <see cref="IEventSink.Queue"/>
/// </summary>
public override Task Queue(Event Event)
{
StringBuilder Output = new StringBuilder();
int i;
switch (Event.Type)
{
case EventType.Debug:
Output.Append("DEBUG: ");
break;
case EventType.Informational:
Output.Append("INFO: ");
break;
case EventType.Notice:
Output.Append("NOTICE: ");
break;
case EventType.Warning:
Output.Append("WARNING: ");
break;
case EventType.Error:
Output.Append("ERROR: ");
break;
case EventType.Critical:
Output.Append("CRITICAL: ");
break;
case EventType.Alert:
Output.Append("ALERT: ");
break;
case EventType.Emergency:
Output.Append("EMERGENCY: ");
break;
}
if (!string.IsNullOrEmpty(Event.EventId))
{
Output.Append(Event.EventId);
Output.Append(": ");
}
if (Event.Message.IndexOf('\t') >= 0)
{
string[] Parts = Event.Message.Split('\t');
bool First = true;
foreach (string Part in Parts)
{
if (First)
First = false;
else
{
i = Output.ToString().Length % TabWidth;
Output.Append(new string(' ', TabWidth - i));
}
Output.Append(Part);
}
}
else
Output.Append(Event.Message);
Output.AppendLine();
Output.Append(" ");
this.AddTag(Output, "Timestamp", Event.Timestamp.ToString(), true);
this.AddTag(Output, "Level", Event.Level.ToString(), false);
if (!string.IsNullOrEmpty(Event.Object))
this.AddTag(Output, "Object", Event.Object, false);
if (!string.IsNullOrEmpty(Event.Actor))
this.AddTag(Output, "Actor", Event.Actor, false);
if (!string.IsNullOrEmpty(Event.Facility))
this.AddTag(Output, "Facility", Event.Facility, false);
if (!string.IsNullOrEmpty(Event.Module))
this.AddTag(Output, "Module", Event.Module, false);
if (!(Event.Tags is null) && Event.Tags.Length > 0)
{
foreach (KeyValuePair<string, object> P in Event.Tags)
this.AddTag(Output, P.Key, P.Value, false);
}
Output.AppendLine();
System.Diagnostics.Debug.WriteLine(Output.ToString());
return Task.CompletedTask;
}
private void AddTag(StringBuilder Output, string Key, object Value, bool First)
{
if (!First)
Output.Append(", ");
Output.Append(Key);
Output.Append('=');
Output.Append(Value);
}
}
}