add request size counters

MareSynchronosServer/MareSynchronosStaticFilesServer/Controllers/CacheController.cs

@@ -13,13 +13,15 @@ public class CacheController : ControllerBase
     private readonly RequestFileStreamResultFactory _requestFileStreamResultFactory;
     private readonly CachedFileProvider _cachedFileProvider;
     private readonly RequestQueueService _requestQueue;
+    private readonly FileStatisticsService _fileStatisticsService;
 
     public CacheController(ILogger<CacheController> logger, RequestFileStreamResultFactory requestFileStreamResultFactory,
-        CachedFileProvider cachedFileProvider, RequestQueueService requestQueue) : base(logger)
+        CachedFileProvider cachedFileProvider, RequestQueueService requestQueue, FileStatisticsService fileStatisticsService) : base(logger)
     {
         _requestFileStreamResultFactory = requestFileStreamResultFactory;
         _cachedFileProvider = cachedFileProvider;
         _requestQueue = requestQueue;
+        _fileStatisticsService = fileStatisticsService;
     }
 
     [HttpGet(MareFiles.Cache_Get)]
@@ -35,6 +37,8 @@ public class CacheController : ControllerBase
         var memoryStream = new MemoryStream();
         var streamWriter = new BinaryWriter(memoryStream);
 
+        long requestSize = 0;
+
         foreach (var file in request.FileIds)
         {
             var fs = await _cachedFileProvider.GetAndDownloadFileStream(file);
@@ -43,11 +47,14 @@ public class CacheController : ControllerBase
             byte[] buffer = new byte[fs.Length];
             _ = await fs.ReadAsync(buffer, HttpContext.RequestAborted);
             streamWriter.Write(buffer);
+            requestSize += fs.Length;
         }
 
         streamWriter.Flush();
         memoryStream.Position = 0;
 
+        _fileStatisticsService.LogRequest(requestSize);
+
         return _requestFileStreamResultFactory.Create(requestId, memoryStream);
     }
 }