/// <summary>
/// This method implemented the "auto columnizer" feature.
/// This method should be called after each columnizer is changed to update the columizer.
/// </summary>
/// <param name="fileName"></param>
/// <param name="logFileReader"></param>
/// <param name="logLineColumnizer"></param>
/// <returns></returns>
public static ILogLineColumnizer FindReplacementForAutoColumnizer(string fileName,
IAutoLogLineColumnizerCallback logFileReader,
ILogLineColumnizer logLineColumnizer)
{
if (logLineColumnizer == null || logLineColumnizer.GetName() == "Auto Columnizer")
{
return(FindColumnizer(fileName, logFileReader));
}
return(logLineColumnizer);
}
public static ILogLineColumnizer FindBetterColumnizer(string fileName,
IAutoLogLineColumnizerCallback logFileReader,
ILogLineColumnizer logLineColumnizer)
{
var newColumnizer = FindColumnizer(fileName, logFileReader);
if (newColumnizer.GetType().Equals(logLineColumnizer.GetType()))
{
return(null);
}
return(newColumnizer);
}
/// <summary>
/// This method will search all registered columnizer and return one according to the priority that returned
/// by the each columnizer.
/// </summary>
/// <param name="fileName"></param>
/// <param name="logFileReader"></param>
/// <returns></returns>
public static ILogLineColumnizer FindColumnizer(string fileName, IAutoLogLineColumnizerCallback logFileReader)
{
if (string.IsNullOrEmpty(fileName))
{
return(new DefaultLogfileColumnizer());
}
List <ILogLine> loglines = new List <ILogLine>();
if (logFileReader != null)
{
loglines = new List <ILogLine>()
{
// Sampling a few lines to select the correct columnizer
logFileReader.GetLogLine(0),
logFileReader.GetLogLine(1),
logFileReader.GetLogLine(2),
logFileReader.GetLogLine(3),
logFileReader.GetLogLine(4),
logFileReader.GetLogLine(5),
logFileReader.GetLogLine(25),
logFileReader.GetLogLine(100),
logFileReader.GetLogLine(200),
logFileReader.GetLogLine(400)
};
}
var registeredColumnizer = PluginRegistry.GetInstance().RegisteredColumnizers;
List <Tuple <Priority, ILogLineColumnizer> > priorityListOfColumnizers = new List <Tuple <Priority, ILogLineColumnizer> >();
foreach (ILogLineColumnizer logLineColumnizer in registeredColumnizer)
{
Priority priority = default(Priority);
if (logLineColumnizer is IColumnizerPriority columnizerPriority)
{
priority = columnizerPriority.GetPriority(fileName, loglines);
}
priorityListOfColumnizers.Add(new Tuple <Priority, ILogLineColumnizer>(priority, logLineColumnizer));
}
ILogLineColumnizer lineColumnizer = priorityListOfColumnizers.OrderByDescending(a => a.Item1).Select(a => a.Item2).First();
return(lineColumnizer);
}
