private static void ProcessChildNodes(XmlReader xmlTextReader, LogEntry entry)
{
while (xmlTextReader.Read())
{
var hasNoMoreChildToProcess = ProcessChildNode(xmlTextReader, entry);
if (hasNoMoreChildToProcess)
break;
}
}
private static bool ProcessChildNode(XmlReader xmlTextReader, LogEntry entry)
{
switch (xmlTextReader.Name)
{
case "log4j:event":
return true;
case ("log4j:message"):
entry.Message = xmlTextReader.ReadString();
break;
case ("log4j:data"):
ProcessDataTag(xmlTextReader, entry);
break;
case ("log4j:throwable"):
entry.Throwable = xmlTextReader.ReadString();
break;
case ("log4j:locationInfo"):
SetLocationInfo(entry, xmlTextReader);
break;
}
return false;
}
private static void ProcessDataTag(XmlReader xmlTextReader, LogEntry entry)
{
switch (xmlTextReader.GetAttribute("name"))
{
case ("log4net:UserName"):
entry.UserName = xmlTextReader.GetAttribute("value");
break;
case ("log4japp"):
entry.App = xmlTextReader.GetAttribute("value");
break;
case ("log4jmachinename"):
entry.MachineName = xmlTextReader.GetAttribute("value");
break;
case ("log4net:HostName"):
entry.HostName = xmlTextReader.GetAttribute("value");
break;
}
}
private static void SetLocationInfo(LogEntry entry, XmlReader xmlTextReader)
{
entry.Class = xmlTextReader.GetAttribute("class");
entry.Method = xmlTextReader.GetAttribute("method");
entry.File = xmlTextReader.GetAttribute("file");
entry.Line = xmlTextReader.GetAttribute("line");
}
private static IEnumerable<LogEntry> ProcessLogEntry(XmlReader xmlTextReader, string logFile, DateTime date)
{
DateTime? prevTimeStamp = null;
while (xmlTextReader.Read())
{
if ((xmlTextReader.NodeType != XmlNodeType.Element) || (xmlTextReader.Name != "log4j:event"))
continue;
var entry = new LogEntry();
entry.Path = logFile;
entry.Logger = xmlTextReader.GetAttribute("logger");
entry.TimeStamp = date.AddMilliseconds(Convert.ToDouble(xmlTextReader.GetAttribute("timestamp"))).ToLocalTime();
if (prevTimeStamp.HasValue)
entry.Delta = (entry.TimeStamp - prevTimeStamp.Value).TotalSeconds;
prevTimeStamp = entry.TimeStamp;
var severityLevel = xmlTextReader.GetAttribute("level");
entry.SeverityLevel = severityLevel;
entry.Thread = xmlTextReader.GetAttribute("thread");
ProcessChildNodes(xmlTextReader, entry);
yield return entry;
}
}
