internal static void WriteLogSessionEnd()
{
string appName = Process.GetCurrentProcess().ProcessName;
DateTime now = DateTime.Now;
string msg = string.Format("Application ended.");
LogEntry entry = new LogEntry(SeverityLevels.Info,
msg, Assembly.GetCallingAssembly().GetName().Name);
WriteLogEntry(entry);
entry = new LogEntry(SeverityLevels.Automatic, "END_LOG_SESSION",
Assembly.GetCallingAssembly().GetName().Name);
WriteLogEntry(entry);
}
private void LogException(Exception ex)
{
LogEntry entry = new LogEntry("Unhandled exception:", ex,
Assembly.GetCallingAssembly().GetName().Name);
Logger.WriteLogEntry(entry);
}
internal static void WriteLogEntry(LogEntry entry)
{
if (entry.SeverityLevel == SeverityLevels.HeavyTrace)
{
Debug.WriteLine("HTRC: " + entry.Message);
Debug.Flush();
}
else
{
WriteLogString(entry.AppName, entry.ToString());
}
}
private static void WriteLogSessionStart()
{
string appName = Process.GetCurrentProcess().ProcessName;
DateTime now = DateTime.Now;
sessionID = now.Ticks;
LogEntry entry = new LogEntry(SeverityLevels.Automatic, "BEGIN_LOG_SESSION",
Assembly.GetCallingAssembly().GetName().Name);
WriteLogEntry(entry);
string msg = string.Format("Application started with LogLevels: {0}.",
LoggingConfiguration.ReportEnabledLevels());
entry = new LogEntry(SeverityLevels.Info,
msg, Assembly.GetCallingAssembly().GetName().Name);
WriteLogEntry(entry);
}
private static void ThreadLoop()
{
LogInfo( "Logger thread loop has begun ...");
// Purge old log files on startup
PurgeOldLogFiles();
while (instance.loggerThreadMustRun ||
instance.entries.Count > 0)
{
ProcessQueue();
DateTime now = DateTime.Now;
if (now.Minute % 60 == 0)
{
// Each hour of continous uptime, purge old log files
PurgeOldLogFiles();
}
System.Threading.Thread.Sleep(10);
}
LogEntry entry = new LogEntry(SeverityLevels.Info,
"Logger thread loop has terminated.",
Assembly.GetCallingAssembly().GetName().Name);
WriteLogEntry(entry);
}
private static void PurgeOldLogFiles()
{
IEnumerable<string> logFiles = Directory.EnumerateFiles(LoggingConfiguration.LogFilePath, "*.log");
foreach (string logFile in logFiles)
{
try
{
if (File.Exists(logFile))
{
string name = Path.GetFileNameWithoutExtension(logFile);
DateTime logFileDate = GetDateFromLogFileName(name);
TimeSpan diff = DateTime.Now.Subtract(logFileDate);
if (diff.Days >= LoggingConfiguration.DaysToKeepLogs)
{
// Old file. Delete it.
File.Delete(logFile);
}
}
}
catch (Exception ex)
{
LogEntry entry = new LogEntry(SeverityLevels.Exception,
ex.Message, "Logger thread");
WriteLogEntry(entry);
}
}
}
private void EnqueueLogEntry(LogEntry entry)
{
// Don't add any more entries after thread was requested to stop.
if (loggerThreadMustRun)
{
entries.Enqueue(entry);
}
}
public static void StopLogger()
{
if (LoggingConfiguration.LoggingEnabled)
{
if (instance.loggerThread.IsAlive)
{
LogTrace("Logger thread was requested to stop...");
instance.loggerThreadMustRun = false;
instance.loggerThread.Join();
LogEntry entry = new LogEntry(SeverityLevels.Info,
"Logger thread has stopped.",
Assembly.GetCallingAssembly().GetName().Name);
WriteLogEntry(entry);
}
}
}
public static void LogException(Exception ex, string format, params object[] args)
{
string message = string.Format(format, args);
Debug.WriteLine("EXC: " + ErrorDispatcher.GetErrorMessageForException(ex, true));
if (LoggingConfiguration.LoggingEnabled)
{
LogEntry entry = new LogEntry(message, ex,
Assembly.GetCallingAssembly().GetName().Name);
instance.EnqueueLogEntry(entry);
}
}
public static void LogError(string format, params object[] args)
{
string message = string.Format(format, args);
Debug.WriteLine("ERR: " + message);
if (LoggingConfiguration.ErrorLevelEnabled)
{
LogEntry entry = new LogEntry(SeverityLevels.Error, message,
Assembly.GetCallingAssembly().GetName().Name);
instance.EnqueueLogEntry(entry);
}
}
public static void LogTrace_WithStackDump(string format, params object[] args)
{
StackTrace st = new StackTrace();
string message = string.Format(format, args);
message += st.ToString();
string[] lines = message.Split('\n');
foreach (string line in lines)
{
Debug.WriteLine("TRC: " + line);
}
if (LoggingConfiguration.TraceLevelEnabled)
{
LogEntry entry = new LogEntry(SeverityLevels.Trace, message,
Assembly.GetCallingAssembly().GetName().Name);
instance.EnqueueLogEntry(entry);
}
}
