using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.Concurrent;
using System.Threading;
using System.IO;
using System.Threading.Tasks;
namespace Raona.Util.Log
{
public class FileLogger
{
#region Instance Fields
private static BlockingCollection<string> logMessageQueue = new BlockingCollection<string>();
private static string logFilePath = null;
private static CancellationToken cancellationToken = CancellationToken.None;
private static Task loggerTask = null;
#endregion
#region Class Constructor (Public)
static FileLogger()
{
FileLogger.loggerTask = Task.Factory.StartNew(() => FileLogger.WriteMessages());
}
#endregion
#region Class Properties (Public)
public static string LogFilePath
{
get
{
return FileLogger.logFilePath;
}
set
{
FileLogger.logFilePath = value;
}
}
public static CancellationToken CancellationToken
{
get
{
return FileLogger.cancellationToken;
}
set
{
FileLogger.cancellationToken = value;
}
}
#endregion
#region Class Methods (Public)
public static void Log(string format, params object[] arguments)
{
FileLogger.logMessageQueue.Add(string.Format(format, arguments));
}
#endregion
#region Class Methods (Private)
private static void WriteMessages()
{
foreach (string message in logMessageQueue.GetConsumingEnumerable(FileLogger.cancellationToken))
{
using (FileStream file = new FileStream(FileLogger.logFilePath, FileMode.Append, FileAccess.Write))
{
using (StreamWriter writer = new StreamWriter(file))
{
writer.WriteLine("[{0}] {1}", DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss.fff"), message);
}
}
}
}
#endregion
}
}
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