PutObjectAsync with Snowball header must not use multipart

PutObjectAsync must not use multipart if has header "X-Amz-Meta-Snowball-Auto-Extract=true"
See minio/minio#17033

Author: emrocha

Minio/ApiEndpoints/ObjectOperations.cs

@@ -561,8 +561,12 @@ public async Task<PutObjectResponse> PutObjectAsync(PutObjectArgs args,
         args?.Validate();
         args.SSE?.Marshal(args.Headers);
 
-        // Upload object in single part if size falls under restricted part size.
-        if (args.ObjectSize < Constants.MinimumPartSize && args.ObjectSize >= 0 && args.ObjectStreamData is not null)
+        var isSnowball = args.Headers.ContainsKey("X-Amz-Meta-Snowball-Auto-Extract") &&
+            Convert.ToBoolean(args.Headers["X-Amz-Meta-Snowball-Auto-Extract"]);
+
+        // Upload object in single part if size falls under restricted part size
+        // or the request has snowball objects
+        if ((args.ObjectSize < Constants.MinimumPartSize || isSnowball) && args.ObjectSize >= 0 && args.ObjectStreamData is not null)
         {
             var bytes = await ReadFullAsync(args.ObjectStreamData, (int)args.ObjectSize).ConfigureAwait(false);
             var bytesRead = bytes.Length;
@@ -1376,4 +1380,4 @@ private async Task MultipartCopyUploadAsync(string bucketName, string objectName
         await CompleteMultipartUploadAsync(destBucketName, destObjectName,
             uploadId, etags, cancellationToken).ConfigureAwait(false);
     }
-}
+}