/// <summary>
/// Create a log file scanner
/// </summary>
/// <param name="pathAndMask">File path and mask (i.e. /var/log/auth*.log)</param>
/// <param name="maxFileSizeBytes">Max size of file (in bytes) before it is deleted or 0 for unlimited</param>
/// <param name="fileProcessingIntervalMilliseconds">How often to process files, in milliseconds, less than 1 for manual processing, in which case <see cref="ProcessFiles"/> must be called as needed.</param>
/// <param name="encoding">Encoding or null for utf-8. The encoding must either be single or variable byte, like ASCII, Ansi, utf-8, etc. UTF-16 and the like are not supported.</param>
/// <param name="maxLineLength">Maximum line length before considering the file a binary file and failing</param>
public LogFileScanner(string pathAndMask, long maxFileSizeBytes = 0, int fileProcessingIntervalMilliseconds = 0, Encoding encoding = null, int maxLineLength = 8192)
{
// replace env vars in path/mask
PathAndMask = pathAndMask?.Trim().Replace('\\', '/');
PathAndMask.ThrowIfNullOrEmpty(nameof(pathAndMask), "Must pass a non-empty path and mask to log file scanner");
// set properties
this.maxFileSize = maxFileSizeBytes;
this.encoding = encoding ?? Encoding.UTF8;
this.maxLineLength = maxLineLength;
try
{
// add initial files
foreach (WatchedFile file in LogFileScanner.GetFiles(PathAndMask))
{
watchedFiles.Add(file);
}
}
catch
{
// generally catching all exceptions and not reporting is bad, but in this case we don't care,
// we will try to get files on every ProcessFiles call and can throw the exception then
}
// setup timer to process files
if (fileProcessingIntervalMilliseconds > 0)
{
fileProcessingTimer = new System.Timers.Timer(fileProcessingIntervalMilliseconds);
fileProcessingTimer.Elapsed += (sender, args) => ProcessFiles();
fileProcessingTimer.Start();
}
}
/// <summary>
/// Create a log file scanner
/// </summary>
/// <param name="pathAndMask">File path and mask (i.e. /var/log/auth*.log)</param>
/// <param name="recursive">Whether to parse all sub directories of path and mask recursively</param>
/// <param name="maxFileSizeBytes">Max size of file (in bytes) before it is deleted or 0 for unlimited</param>
/// <param name="pingIntervalMilliseconds">Ping interval in milliseconds, less than 1 for manual ping required</param>
public IPBanLogFileScanner(string pathAndMask, bool recursive, long maxFileSizeBytes = 0, int pingIntervalMilliseconds = 0)
{
PathAndMask = pathAndMask?.Trim();
PathAndMask.ThrowIfNullOrEmpty(nameof(pathAndMask), "Must pass a non-empty path and mask to log file scanner");
this.maxFileSize = maxFileSizeBytes;
directoryToWatch = Path.GetDirectoryName(pathAndMask);
fileMask = Path.GetFileName(pathAndMask);
if (pingIntervalMilliseconds > 0)
{
pingTimer = new System.Timers.Timer(pingIntervalMilliseconds);
pingTimer.Elapsed += PingTimerElapsed;
pingTimer.Start();
}
ScanForFiles(pathAndMask, recursive);
}
