private void ReportExceptionDuringTracing(Exception exception, LogEntry log, LogSource traceSource)
{
try
{
NameValueCollection additionalInfo = new NameValueCollection();
additionalInfo.Add(ExceptionFormatter.Header,
string.Format(Resources.Culture, Resources.TraceSourceFailed, traceSource.Name));
additionalInfo.Add(Resources.TraceSourceFailed2,
string.Format(Resources.Culture, Resources.TraceSourceFailed3, log.ToString()));
ExceptionFormatter formatter =
new ExceptionFormatter(additionalInfo, Resources.DistributorEventLoggerDefaultApplicationName);
LogEntry reportingLogEntry = new LogEntry();
reportingLogEntry.Severity = TraceEventType.Error;
reportingLogEntry.Message = formatter.GetMessage(exception);
reportingLogEntry.EventId = LogWriterFailureEventID;
structureHolder.ErrorsTraceSource.TraceData(reportingLogEntry.Severity, reportingLogEntry.EventId, reportingLogEntry);
}
catch (Exception ex)
{
instrumentationProvider.FireFailureLoggingErrorEvent(Resources.FailureWhileTracing, ex);
}
}
/// <devdoc>
/// Checks to determine whether impersonation is in place, and if it is then it reverts it returning
/// the impersonation context that must be used to undo the revert.
/// </devdoc>
private WindowsImpersonationContext RevertExistingImpersonation()
{
// noop if reverting impersonation is disabled
if (!structureHolder.RevertImpersonation)
{
return(null);
}
try
{
using (WindowsIdentity impersonatedIdentity = WindowsIdentity.GetCurrent(true))
{
if (impersonatedIdentity == null)
{
return(null);
}
}
}
catch (SecurityException e)
{
instrumentationProvider.FireFailureLoggingErrorEvent(Resources.ExceptionCannotCheckImpersonatedIdentity, e);
return(null);
}
try
{
return(WindowsIdentity.Impersonate(IntPtr.Zero)); // to be undone by caller
}
catch (SecurityException e)
{
// this shouldn't happen, as GetCurrent() and Impersonate() demand the same CAS permissions.
instrumentationProvider.FireFailureLoggingErrorEvent(Resources.ExceptionCannotRevertImpersonatedIdentity, e);
return(null);
}
catch (UnauthorizedAccessException e)
{
instrumentationProvider.FireFailureLoggingErrorEvent(Resources.ExceptionCannotRevertImpersonatedIdentity, e);
return(null);
}
}
