/// <summary>
/// Initializes a new instance of the <see cref="MutexMultiProcessFileAppender" /> class.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="parameters">The parameters.</param>
public MutexMultiProcessFileAppender(string fileName, ICreateFileParameters parameters) : base(fileName, parameters)
{
try
{
_mutex = CreateSharableMutex("FileLock");
_fileStream = CreateFileStream(true);
_fileCharacteristicsHelper = FileCharacteristicsHelper.CreateHelper(parameters.ForceManaged);
}
catch
{
if (_mutex != null)
{
_mutex.Close();
_mutex = null;
}
if (_fileStream != null)
{
_fileStream.Close();
_fileStream = null;
}
throw;
}
}
protected override DateAndSequenceArchive GenerateArchiveFileInfo(FileInfo archiveFile, FileNameTemplate fileTemplate)
{
int sequenceNumber = ExtractArchiveNumberFromFileName(archiveFile.FullName);
var creationTimeUtc = FileCharacteristicsHelper.ValidateFileCreationTime(archiveFile, (f) => f.GetCreationTimeUtc(), (f) => f.GetLastWriteTimeUtc()).Value;
return(new DateAndSequenceArchive(archiveFile.FullName, creationTimeUtc, string.Empty, sequenceNumber > 0 ? sequenceNumber : 0));
}
/// <summary>
/// Initializes a new instance of the <see cref="MutexMultiProcessFileAppender" /> class.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="parameters">The parameters.</param>
public MutexMultiProcessFileAppender(string fileName, ICreateFileParameters parameters) : base(fileName, parameters)
{
try
{
this.mutex = CreateSharableMutex("FileLock");
this.fileStream = CreateFileStream(true);
this.fileCharacteristicsHelper = FileCharacteristicsHelper.CreateHelper(parameters.ForceManaged);
}
catch
{
if (this.mutex != null)
{
this.mutex.Close();
this.mutex = null;
}
if (this.fileStream != null)
{
this.fileStream.Close();
this.fileStream = null;
}
throw;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="WindowsMultiProcessFileAppender" /> class.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="parameters">The parameters.</param>
public WindowsMultiProcessFileAppender(string fileName, ICreateFileParameters parameters) : base(fileName, parameters)
{
try
{
CreateAppendOnlyFile(fileName);
fileCharacteristicsHelper = FileCharacteristicsHelper.CreateHelper(parameters.ForceManaged);
}
catch
{
if (fileStream != null)
fileStream.Dispose();
fileStream = null;
throw;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="WindowsMultiProcessFileAppender" /> class.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="parameters">The parameters.</param>
public WindowsMultiProcessFileAppender(string fileName, ICreateFileParameters parameters) : base(fileName, parameters)
{
try
{
CreateAppendOnlyFile(fileName);
_fileCharacteristicsHelper = FileCharacteristicsHelper.CreateHelper(parameters.ForceManaged);
}
catch
{
if (_fileStream != null)
{
_fileStream.Dispose();
}
_fileStream = null;
throw;
}
}
private void UpdateCreationTime()
{
FileInfo fileInfo = new FileInfo(this.FileName);
if (fileInfo.Exists)
{
this.CreationTimeUtc = FileCharacteristicsHelper.ValidateFileCreationTime(fileInfo, (f) => f.GetCreationTimeUtc(), (f) => f.GetLastWriteTimeUtc()).Value;
}
else
{
File.Create(this.FileName).Dispose();
this.CreationTimeUtc = DateTime.UtcNow;
#if !SILVERLIGHT
// Set the file's creation time to avoid being thwarted by Windows' Tunneling capabilities (https://support.microsoft.com/en-us/kb/172190).
File.SetCreationTimeUtc(this.FileName, this.CreationTimeUtc);
#endif
}
}
public DateTime?GetFileCreationTimeSource(string filePath, bool fallback)
{
var appender = GetAppender(filePath);
DateTime?result = null;
if (appender != null)
{
try
{
result = FileCharacteristicsHelper.ValidateFileCreationTime(appender, (f) => f.GetFileCreationTimeUtc(), (f) => f.CreationTimeUtc, (f) => f.GetFileLastWriteTimeUtc());
if (result.HasValue)
{
// Check if cached value is still valid, and update if not (Will automatically update CreationTimeSource)
DateTime cachedTimeUtc = appender.CreationTimeUtc;
if (result.Value != cachedTimeUtc)
{
appender.CreationTimeUtc = result.Value;
}
return(appender.CreationTimeSource);
}
}
catch (Exception ex)
{
InternalLogger.Error(ex, "Failed to get file creation time for file '{0}'.", appender.FileName);
InvalidateAppender(appender.FileName);
throw;
}
}
if (result == null && fallback)
{
var fileInfo = new FileInfo(filePath);
if (fileInfo.Exists)
{
result = FileCharacteristicsHelper.ValidateFileCreationTime(fileInfo, (f) => f.GetCreationTimeUtc(), (f) => f.GetLastWriteTimeUtc()).Value;
return(Time.TimeSource.Current.FromSystemTime(result.Value));
}
}
return(result);
}
protected override DateAndSequenceArchive GenerateArchiveFileInfo(FileInfo archiveFile, FileNameTemplate fileTemplate)
{
if (fileTemplate?.EndAt > 0)
{
string filename = archiveFile.Name;
int templatePos = 0;
for (int i = 0; i < filename.Length; ++i)
{
char fileNameChar = filename[i];
if (templatePos >= fileTemplate.Template.Length)
{
if (char.IsLetter(fileNameChar))
{
return(null); // reached end of template, but still letters
}
break;
}
char templateChar;
if (templatePos < fileTemplate.EndAt && i >= fileTemplate.BeginAt)
{
// Inside wildcard, skip validation of non-letters
if (char.IsLetter(fileNameChar))
{
templatePos = fileTemplate.EndAt;
do
{
if (templatePos >= fileTemplate.Template.Length)
{
return(null); // reached end of template, but still letters
}
templateChar = fileTemplate.Template[templatePos];
++templatePos;
} while (!char.IsLetter(templateChar));
}
else
{
continue;
}
}
else
{
templateChar = fileTemplate.Template[templatePos];
++templatePos;
}
if (fileNameChar == templateChar || char.ToLowerInvariant(fileNameChar) == char.ToLowerInvariant(templateChar))
{
continue;
}
if (templateChar == '*' && !char.IsLetter(fileNameChar))
{
break; // Reached archive-seq-no, lets call it a day
}
return(null); // filename is not matching file-template
}
}
int sequenceNumber = ExtractArchiveNumberFromFileName(archiveFile.FullName);
InternalLogger.Trace("FileTarget: extracted sequenceNumber: {0} from file '{1}'", sequenceNumber, archiveFile.FullName);
var creationTimeUtc = FileCharacteristicsHelper.ValidateFileCreationTime(archiveFile, (f) => f.GetCreationTimeUtc(), (f) => f.GetLastWriteTimeUtc()).Value;
return(new DateAndSequenceArchive(archiveFile.FullName, creationTimeUtc, string.Empty, sequenceNumber > 0 ? sequenceNumber : 0));
}
public UnixMultiProcessFileAppender(string fileName, ICreateFileParameters parameters) : base(fileName, parameters)
{
UnixFileInfo fileInfo = null;
bool fileExists = false;
try
{
fileInfo = new UnixFileInfo(fileName);
fileExists = fileInfo.Exists;
}
catch
{
}
int fd = Syscall.open(fileName, OpenFlags.O_CREAT | OpenFlags.O_WRONLY | OpenFlags.O_APPEND, (FilePermissions)(6 | (6 << 3) | (6 << 6)));
if (fd == -1)
{
if (Stdlib.GetLastError() == Errno.ENOENT && parameters.CreateDirs)
{
string dirName = Path.GetDirectoryName(fileName);
if (!Directory.Exists(dirName) && parameters.CreateDirs)
{
Directory.CreateDirectory(dirName);
}
fd = Syscall.open(fileName, OpenFlags.O_CREAT | OpenFlags.O_WRONLY | OpenFlags.O_APPEND, (FilePermissions)(6 | (6 << 3) | (6 << 6)));
}
}
if (fd == -1)
{
UnixMarshal.ThrowExceptionForLastError();
}
try
{
_file = new UnixStream(fd, true);
long filePosition = _file.Position;
if (fileExists || filePosition > 0)
{
if (fileInfo != null)
{
CreationTimeUtc = FileCharacteristicsHelper.ValidateFileCreationTime(fileInfo, (f) => File.GetCreationTimeUtc(f.FullName), (f) => { f.Refresh(); return(f.LastStatusChangeTimeUtc); }, (f) => DateTime.UtcNow).Value;
}
else
{
CreationTimeUtc = FileCharacteristicsHelper.ValidateFileCreationTime(fileName, (f) => File.GetCreationTimeUtc(f), (f) => DateTime.UtcNow).Value;
}
}
else
{
// We actually created the file and eventually concurrent processes
CreationTimeUtc = DateTime.UtcNow;
File.SetCreationTimeUtc(FileName, CreationTimeUtc);
}
}
catch
{
Syscall.close(fd);
throw;
}
}
