/// <summary>
/// Appends information about an exception to string builder.
/// </summary>
/// <param name="sb">The string builder.</param>
/// <param name="rootException">The root exception.</param>
private void AppendException(StringBuilder sb, Exception rootException)
{
Exception e = rootException;
int nesting = 0;
while (e != null)
{
#if !SILVERLIGHT
Win32Exception winErr = e as Win32Exception;
if (nesting > 0)
{
sb.AppendFormat("\r\n------ Nested:{0} ------\r\n", nesting);
}
if (winErr == null)
{
sb.AppendFormat((IFormatProvider)null, "{0}: {1} [\"{2}\"]\r\n", Type.ToString(), e.GetType().Name, e.Message.Replace("\r\n", " "));
}
else
{
sb.AppendFormat((IFormatProvider)null, "{0}: {1} [\"{2}\"] [WINERR={3}]\r\n", Type.ToString(), e.GetType().Name, e.Message.Replace("\r\n", " "), winErr.NativeErrorCode);
}
#else
sb.AppendFormat((IFormatProvider)null, "{0}: {1} [\"{2}\"]\r\n", Type.ToString(), e.GetType().Name, e.Message.Replace("\r\n", " "));
#endif
ICustomExceptionLogger custom;
custom = e as ICustomExceptionLogger;
if (custom != null)
{
custom.Log(sb);
}
sb.Append("\r\n");
sb.Append(e.StackTrace);
sb.Append("\r\n");
e = e.InnerException;
nesting++;
}
// Handler serialization of any aggregated exceptions.
var aggregation = rootException as AggregateException;
if (aggregation != null)
{
sb.Append("\r\n");
sb.Append(" ============= Aggregated Exceptions =============\r\n");
foreach (var subException in aggregation.InnerExceptions)
{
AppendException(sb, subException);
}
}
}
/// <summary>
/// Computes an MD5 hash code for the log entry
/// </summary>
/// <param name="extension">The extended entry information (or <c>null</c>).</param>
/// <param name="entryType">The log entry type.</param>
/// <param name="message">The log message (or <c>null</c>).</param>
/// <param name="e">The logged exception (or <c>null</c>).</param>
/// <returns>The computed hash.</returns>
private static MD5Key ComputeMD5Hash(ISysLogEntryExtension extension, SysLogEntryType entryType, string message, Exception e)
{
StringBuilder sb = new StringBuilder(1024);
if (extension != null)
{
sb.Append(extension.Format());
}
sb.Append('\t');
sb.Append(entryType.ToString());
sb.Append('\t');
if (message != null)
{
sb.Append(message);
}
sb.Append('\t');
if (e != null)
{
sb.Append(e.GetType().FullName);
sb.Append('\t');
sb.Append(e.Message);
sb.Append('\t');
sb.Append(e.StackTrace.ToString());
}
return(new MD5Key(MD5Hasher.Compute(sb.ToString())));
}