/// <summary>
/// 日志打点接口。
/// </summary>
public interface ITopLogger
{
void Error(string message);
void Warn(string message);
void Info(string message);
}

/// <summary>
/// 日志打点的简单实现。
/// </summary>
public class DefaultTopLogger : ITopLogger
{
public const string LOG_FILE_NAME = "topsdk.log";
public const string DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";

static DefaultTopLogger()
{
try
{
Trace.Listeners.Add(new TextWriterTraceListener(LOG_FILE_NAME));
}
catch (Exception e)
{
Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
}
Trace.AutoFlush = true;
}

public void Error(string message)
{
Trace.WriteLine(message, DateTime.Now.ToString(DATETIME_FORMAT) + " ERROR");
}

public void Warn(string message)
{
Trace.WriteLine(message, DateTime.Now.ToString(DATETIME_FORMAT) + " WARN");
}

public void Info(string message)
{
Trace.WriteLine(message, DateTime.Now.ToString(DATETIME_FORMAT) + " INFO");
}
}