/// <summary>
/// Returns a page of errors from the folder in descending order of logged time as defined by the sortable filenames.
/// </summary>
public override int GetErrors(int pageIndex, int pageSize, IList errorEntryList)
{
if (pageIndex < 0)
{
pageIndex = 0;
}
if (pageSize < 0)
{
pageSize = 25;
}
string[] fileList = Directory.GetFiles(LogPath, "*.xml");
if (fileList.Length < 1)
{
return(0);
}
Array.Sort(fileList);
Array.Reverse(fileList);
int currentItem = pageIndex * pageSize;
int lastItem = (currentItem + pageSize < fileList.Length) ? currentItem + pageSize : fileList.Length;
for (int i = currentItem; i < lastItem; i++)
{
FileInfo f = new FileInfo(fileList[i]);
FileStream s = f.OpenRead();
XmlTextReader r = new XmlTextReader(s);
try
{
while (r.IsStartElement("error"))
{
SimpleErrorHandler.Error error = new SimpleErrorHandler.Error();
error.FromXml(r);
error.IsProtected = f.IsReadOnly; // have we "protected" this file from deletion?
errorEntryList.Add(new ErrorLogEntry(this, error.Id, error));
}
}
finally
{
r.Close();
}
}
return(fileList.Length);
}
/// <summary>
/// Returns the specified error from the filesystem, or throws an exception if it does not exist.
/// </summary>
public override ErrorLogEntry GetError(string id)
{
string[] fileList = Directory.GetFiles(LogPath, string.Format("*{0}.xml", id));
if (fileList.Length < 1)
{
throw new Exception(string.Format("Can't locate error file for errorId {0}", id));
}
FileInfo f = new FileInfo(fileList[0]);
FileStream s = f.OpenRead();
XmlTextReader r = new XmlTextReader(s);
SimpleErrorHandler.Error error = new SimpleErrorHandler.Error();
error.FromXml(r);
r.Close();
return(new ErrorLogEntry(this, id, error));
}
/// <summary>
/// Answers the older exception that 'possibleDuplicate' matches, returning null if no match is found.
/// </summary>
private bool TryFindOriginalError(SimpleErrorHandler.Error possibleDuplicate, string messageHash, out SimpleErrorHandler.Error original)
{
string[] files = Directory.GetFiles(LogPath);
if (files.Length > 0)
{
var earliestDate = DateTime.Now.Add(_ignoreSimilarExceptionsThreshold.Value);
// order by newest
Array.Sort(files);
Array.Reverse(files);
foreach (var filename in files)
{
if (File.GetCreationTime(filename) >= earliestDate)
{
var match = Regex.Match(filename, @"error[-\d]+Z-(?<hashCode>((?<!\d)-|\d)+)-(?<id>.+)\.xml", RegexOptions.IgnoreCase);
if (match.Success)
{
var existingHash = match.Groups["hashCode"].Value;
if (messageHash.Equals(existingHash))
{
original = GetError(match.Groups["id"].Value).Error;
return(true);
}
}
}
else
{
break; // no other files are newer, no use checking
}
}
}
original = null;
return(false);
}
/// <summary>
/// Returns a page of errors from the folder in descending order of logged time as defined by the sortable filenames.
/// </summary>
public override int GetErrors(int pageIndex, int pageSize, IList errorEntryList)
{
if (pageIndex < 0) pageIndex = 0;
if (pageSize < 0) pageSize = 25;
string[] fileList = Directory.GetFiles(LogPath, "*.xml");
if (fileList.Length < 1) return 0;
Array.Sort(fileList);
Array.Reverse(fileList);
int currentItem = pageIndex * pageSize;
int lastItem = (currentItem + pageSize < fileList.Length) ? currentItem + pageSize : fileList.Length;
for (int i = currentItem; i < lastItem; i++)
{
FileInfo f = new FileInfo(fileList[i]);
FileStream s = f.OpenRead();
XmlTextReader r = new XmlTextReader(s);
try
{
while (r.IsStartElement("error"))
{
SimpleErrorHandler.Error error = new SimpleErrorHandler.Error();
error.FromXml(r);
error.IsProtected = f.IsReadOnly; // have we "protected" this file from deletion?
errorEntryList.Add(new ErrorLogEntry(this, error.Id, error));
}
}
finally
{
r.Close();
}
}
return fileList.Length;
}
/// <summary>
/// Returns the specified error from the filesystem, or throws an exception if it does not exist.
/// </summary>
public override ErrorLogEntry GetError(string id)
{
string[] fileList = Directory.GetFiles(LogPath, string.Format("*{0}.xml", id));
if (fileList.Length < 1)
throw new Exception(string.Format("Can't locate error file for errorId {0}", id));
FileInfo f = new FileInfo(fileList[0]);
FileStream s = f.OpenRead();
XmlTextReader r = new XmlTextReader(s);
SimpleErrorHandler.Error error = new SimpleErrorHandler.Error();
error.FromXml(r);
r.Close();
return new ErrorLogEntry(this, id, error);
}
