Add configurable chunked encoding for S3 uploads

Added support for a useChunkEncoding parameter to control whether chunked encoding is used when uploading to S3. The setting is parsed during initialization and applied to PutObjectRequest, allowing for more flexible S3 compatibility.

Author: bvdcode

src/Octockup.Server/Modules/S3BackupStorage.cs

@@ -20,6 +20,7 @@ public class S3BackupStorage(ILogger<S3BackupStorage> _logger) : IBackupStorage
         private string? _path;
         private string? _bucket;
         private AmazonS3Client? _s3;
+        private bool _useChunkEncoding = true;
         private bool _validateChecksums = false;
         private ICollection<string>? _ignoredPaths;
 
@@ -56,6 +57,13 @@ public void SetParameters(IReadOnlyDictionary<string, string> parameters)
             string accessKey = parameters["accessKey"];
             string secretKey = parameters["secretKey"];
 
+            bool hasChunkEncodingParam = parameters.TryGetValue("useChunkEncoding", out var chunkEncodingStr);
+            if (hasChunkEncodingParam)
+            {
+                bool parsed = bool.TryParse(chunkEncodingStr, out var chunkEncodingBool);
+                _useChunkEncoding = parsed && chunkEncodingBool;
+            }
+
             _s3 = new AmazonS3Client(accessKey, secretKey, config);
         }
 
@@ -415,7 +423,7 @@ public Task UploadAsync(string path, Stream data, CancellationToken cancellation
                 Key = key,
                 InputStream = data,
                 BucketName = _bucket,
-                UseChunkEncoding = false,
+                UseChunkEncoding = _useChunkEncoding,
                 ContentType = MediaTypeNames.Application.Octet,
             };