Merge branch 'master' into cache-test-fix

Reviewed-on: #45

LightlessSyncServer/LightlessSyncStaticFilesServer/Services/CachedFileProvider.cs

@@ -116,11 +116,12 @@ public sealed class CachedFileProvider : IDisposable
 			var tempFileName = destinationFilePath + ".dl";
 			File.Copy(coldStorageFilePath.FullName, tempFileName, true);
 			File.Move(tempFileName, destinationFilePath, true);
-            coldStorageFilePath.LastAccessTimeUtc = DateTime.UtcNow;
-            var destinationFile = new FileInfo(destinationFilePath);
-            destinationFile.LastAccessTimeUtc = DateTime.UtcNow;
-            destinationFile.CreationTimeUtc = DateTime.UtcNow;
-            destinationFile.LastWriteTimeUtc = DateTime.UtcNow;
+
+			File.SetLastAccessTimeUtc(coldStorageFilePath.FullName, DateTime.UtcNow);
+			File.SetLastAccessTimeUtc(destinationFilePath, DateTime.UtcNow);
+			File.SetCreationTimeUtc(destinationFilePath, DateTime.UtcNow);
+			File.SetLastWriteTimeUtc(destinationFilePath, DateTime.UtcNow);
+
 			_metrics.IncGauge(MetricsAPI.GaugeFilesTotal);
 			_metrics.IncGauge(MetricsAPI.GaugeFilesTotalSize, new FileInfo(destinationFilePath).Length);
 			return true;
@@ -173,7 +174,14 @@ public sealed class CachedFileProvider : IDisposable
 		var fi = FilePathUtil.GetFileInfoForHash(_hotStoragePath, hash);
 		if (fi == null) return null;
 
-        fi.LastAccessTimeUtc = DateTime.UtcNow;
+		try
+		{
+			File.SetLastAccessTimeUtc(fi.FullName, DateTime.UtcNow);
+		}
+		catch (Exception ex)
+		{
+			_logger.LogWarning(ex, "Failed to update LastAccessTimeUtc for file {hash}", hash);
+		}
 
 		_fileStatisticsService.LogFile(hash, fi.Length);