/// <summary>
/// Finds previous error data, if already exists, appends further occurrance data to the file,
/// if not exists, creates the cache item
/// </summary>
/// <param name="error">error caused</param>
/// <param name="errorItem"></param>
/// <returns></returns>
private static bool GetPreviousErrorData(string error, ref LoggingErrorCacheItem errorItem)
{
errorItem = (LoggingErrorCacheItem)_errorCache.Get(error);
if (errorItem != null)
{
if (!CanLogData(errorItem.FileName))
{
return(false);
}
if (errorItem.NumberOfErrors > _maximumReoccuranceCount)
{
return(false);
}
// if this error has occurred before, then append the date/time to the existing message
StreamWriter w = File.AppendText(errorItem.FileName);
try
{
if (errorItem.NumberOfErrors == 0)
{
w.WriteLine(String.Empty);
}
if (errorItem.NumberOfErrors < _maximumReoccuranceCount)
{
w.WriteLine("Further Occurance: {0}", DateTime.Now.ToString());
}
else if (errorItem.NumberOfErrors == _maximumReoccuranceCount)
{
w.WriteLine("Maximum Reoccurance Rate Reached - Further reporting on this error will be supressed");
}
}
finally
{
// Update the underlying file.
w.Flush();
w.Close();
w.Dispose();
w = null;
}
errorItem.IncrementErrors();
return(false);
}
else
{
if (_errorPath == null)
{
string dummy = Path;
}
if (!Directory.Exists(_errorPath))
{
Directory.CreateDirectory(_errorPath);
}
// add this error to the cache
errorItem = new LoggingErrorCacheItem(error, error);
errorItem.FileName = _errorPath + String.Format("{0}.log",
DateTime.Now.ToString("ddMMyyyy HH mm ss ffff"));
if (!CanLogData(errorItem.FileName))
{
return(false);
}
if (!_errorCache.Add(error, errorItem))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Add's an exception to the event log
/// </summary>
/// <param name="e">Exception to add to log file</param>
/// <param name="extraData">extra data to be added along with exception information</param>
public static void Add(Exception e, string extraData = "")
{
if (e == null)
{
return;
}
using (TimedLock.Lock(_lockObject))
{
LoggingErrorCacheItem previousError = null;
previousError = (LoggingErrorCacheItem)_errorCache.Get(e.Message);
if (previousError != null)
{
if (!CanLogData(previousError.FileName))
{
return;
}
if (previousError.NumberOfErrors > _maximumReoccuranceCount)
{
return;
}
// if this error has occurred before, then append the date/time to the existing message
StreamWriter w = File.AppendText(previousError.FileName);
try
{
if (previousError.NumberOfErrors == 0)
{
w.WriteLine(String.Empty);
}
if (previousError.NumberOfErrors < _maximumReoccuranceCount)
{
w.WriteLine("Further Occurance: {0}", DateTime.Now.ToString());
}
else if (previousError.NumberOfErrors == _maximumReoccuranceCount)
{
w.WriteLine("Maximum Reoccurance Rate Reached - Further reporting on this error will be supressed");
}
}
finally
{
// Update the underlying file.
w.Flush();
w.Close();
w.Dispose();
w = null;
}
previousError.IncrementErrors();
return;
}
else
{
if (_errorPath == null)
{
string dummy = Path;
}
if (!Directory.Exists(_errorPath))
{
Directory.CreateDirectory(_errorPath);
}
// add this error to the cache
previousError = new LoggingErrorCacheItem(e.Message, e.Message);
previousError.FileName = _errorPath + String.Format("{0}.log",
DateTime.Now.ToString("ddMMyyyy HH mm ss ffff"));
if (!CanLogData(previousError.FileName))
{
return;
}
if (!_errorCache.Add(e.Message, previousError))
{
return;
}
}
string Inner = "Unknown";
string Message = "Unknown";
string Source = "Unknown";
string StackTrace = "Unknown";
string TargetSite = "Unknown";
if (e != null)
{
Inner = e.InnerException == null ? "InnerException is null" : e.InnerException.ToString();
Message = e.Message;
Source = e.Source;
StackTrace = e.StackTrace;
TargetSite = e.TargetSite == null ? "No Target Site" : e.TargetSite.ToString();
}
string Msg = String.Format("Date: {5} {6}\r\n\r\nError Message: {0}\r\n" +
"\r\nInner Exception: {1}\r\n\r\nSource: {2}\r\n" +
"\r\nStackTrace: {3}\r\n\r\nTarget Site: {4}\r\n",
Message, Inner, Source, StackTrace, TargetSite, DateTime.Now.ToString("HH:mm:ss"),
DateTime.Now.ToString("dd/MM/yyyy"));
if (!String.IsNullOrEmpty(extraData))
{
Msg = String.Format("{0}\r\n\r\n{1}\r\n", Msg, extraData);
}
try
{
StreamWriter w = File.AppendText(previousError.FileName);
try
{
w.Write(Msg);
}
finally
{
// Update the underlying file.
w.Flush();
w.Close();
w.Dispose();
w = null;
}
}
catch
{
//ignore, I suppose :-\
}
}
}