private IEnumerable <SizeLimitedLogFile> GetExistingFiles(string filePathTemplate, long fileSizeLimitBytes)
{
var directoryName = Path.GetDirectoryName(filePathTemplate);
if (string.IsNullOrEmpty(directoryName))
{
#if ASPNETCORE50
directory = Directory.GetCurrentDirectory();
#else
directoryName = Environment.CurrentDirectory;
#endif
}
directoryName = Path.GetFullPath(directoryName);
var filePathTemplateName = Path.GetFileNameWithoutExtension(filePathTemplate);
if (!Directory.Exists(directoryName))
{
Directory.CreateDirectory(directoryName);
}
return
(Directory.GetFiles(directoryName)
.Select(x => FileSinkParser.ParseRollingLogfile(x, fileSizeLimitBytes))
.Where(rollingFile => rollingFile != null)
.Where(rollingFile => rollingFile.NameTemplate.Equals(filePathTemplateName)));
}
public SizeLimitedFileSink GetNewSink()
{
IList <SizeLimitedLogFile> existingFiles = this.GetExistingFiles(this.filePathTemplate, this.fileSizeLimitBytes).ToList();
SizeLimitedLogFile nextFile;
if (existingFiles.Any())
{
var latest = existingFiles.OrderByDescending(x => x.FileNameComponents.Sequence).First();
nextFile = latest.Next();
}
else
{
nextFile = FileSinkParser.ParseRollingLogfile(this.filePathTemplate, this.fileSizeLimitBytes);
}
return(new SizeLimitedFileSink(this.formatter, this.filePathDirectory, nextFile, this.encoding));
}