feat: Adds Ownder data in ListObjects(V2) result.

Closes #819

ListObjects returns object owner data in each object entity in the result, while ListObjectsV2 has fetch-owner query param, which indicates if the objects owner data should be fetched.
Adds these changes in the gateway to add `Owner` data in `ListObjects` and `ListObjectsV2` result. In aws the objects can be owned by different users in the same bucket. In the gateway all the objects are owned by the bucket owner.

tests/integration/group-tests.go

@@ -218,6 +218,7 @@ func TestListObjects(s *S3Conf) {
 	ListObjects_marker_not_from_obj_list(s)
 	ListObjects_list_all_objs(s)
 	ListObjects_nested_dir_file_objs(s)
+	ListObjects_check_owner(s)
 	//TODO: remove the condition after implementing checksums in azure
 	if !s.azureTests {
 		ListObjects_with_checksum(s)
@@ -235,6 +236,7 @@ func TestListObjectsV2(s *S3Conf) {
 	ListObjectsV2_all_objs_max_keys(s)
 	ListObjectsV2_exceeding_max_keys(s)
 	ListObjectsV2_list_all_objs(s)
+	ListObjectsV2_with_owner(s)
 	//TODO: remove the condition after implementing checksums in azure
 	if !s.azureTests {
 		ListObjectsV2_with_checksum(s)
@@ -897,6 +899,7 @@ func GetIntTests() IntTests {
 		"ListObjects_marker_not_from_obj_list":                                    ListObjects_marker_not_from_obj_list,
 		"ListObjects_list_all_objs":                                               ListObjects_list_all_objs,
 		"ListObjects_nested_dir_file_objs":                                        ListObjects_nested_dir_file_objs,
+		"ListObjects_check_owner":                                                 ListObjects_check_owner,
 		"ListObjects_with_checksum":                                               ListObjects_with_checksum,
 		"ListObjectsV2_start_after":                                               ListObjectsV2_start_after,
 		"ListObjectsV2_both_start_after_and_continuation_token":                   ListObjectsV2_both_start_after_and_continuation_token,
@@ -907,6 +910,7 @@ func GetIntTests() IntTests {
 		"ListObjectsV2_truncated_common_prefixes":                                 ListObjectsV2_truncated_common_prefixes,
 		"ListObjectsV2_all_objs_max_keys":                                         ListObjectsV2_all_objs_max_keys,
 		"ListObjectsV2_list_all_objs":                                             ListObjectsV2_list_all_objs,
+		"ListObjectsV2_with_owner":                                                ListObjectsV2_with_owner,
 		"ListObjectsV2_with_checksum":                                             ListObjectsV2_with_checksum,
 		"ListObjectVersions_VD_success":                                           ListObjectVersions_VD_success,
 		"DeleteObject_non_existing_object":                                        DeleteObject_non_existing_object,

tests/integration/tests.go

@@ -4815,7 +4815,7 @@ func ListObjects_with_checksum(s *S3Conf) error {
 			return err
 		}
 
-		if !compareObjects(res.Contents, contents) {
+		if !compareObjects(contents, res.Contents) {
 			return fmt.Errorf("expected the objects list to be %v, instead got %v", contents, res.Contents)
 		}
 
@@ -4899,6 +4899,38 @@ func ListObjects_nested_dir_file_objs(s *S3Conf) error {
 	})
 }
 
+func ListObjects_check_owner(s *S3Conf) error {
+	testName := "ListObjects_check_owner"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		objs, err := putObjects(s3client, []string{"foo", "bar/baz", "quxx/xyz/eee", "abc/", "bcc"}, bucket)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+		res, err := s3client.ListObjects(ctx, &s3.ListObjectsInput{
+			Bucket: &bucket,
+		})
+		cancel()
+		if err != nil {
+			return err
+		}
+
+		for i := range res.Contents {
+			res.Contents[i].Owner = &types.Owner{
+				ID: &s.awsID,
+			}
+		}
+
+		if !compareObjects(objs, res.Contents) {
+			return fmt.Errorf("expected the contents to be %v, instead got %v", objs, res.Contents)
+		}
+
+		return nil
+
+	})
+}
+
 func ListObjectsV2_start_after(s *S3Conf) error {
 	testName := "ListObjectsV2_start_after"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
@@ -5290,6 +5322,38 @@ func ListObjectsV2_list_all_objs(s *S3Conf) error {
 	})
 }
 
+func ListObjectsV2_with_owner(s *S3Conf) error {
+	testName := "ListObjectsV2_with_owner"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		objs, err := putObjects(s3client, []string{"foo", "bar/baz", "quxx/xyz/eee", "abc/", "bcc"}, bucket)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+		res, err := s3client.ListObjectsV2(ctx, &s3.ListObjectsV2Input{
+			Bucket:     &bucket,
+			FetchOwner: getBoolPtr(true),
+		})
+		cancel()
+		if err != nil {
+			return err
+		}
+
+		for i := range res.Contents {
+			res.Contents[i].Owner = &types.Owner{
+				ID: &s.awsID,
+			}
+		}
+
+		if !compareObjects(objs, res.Contents) {
+			return fmt.Errorf("expected the contents to be %v, instead got %v", objs, res.Contents)
+		}
+
+		return nil
+	})
+}
+
 func ListObjectsV2_with_checksum(s *S3Conf) error {
 	testName := "ListObjectsV2_with_checksum"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {

tests/integration/utils.go

@@ -725,10 +725,16 @@ func compareObjects(list1, list2 []types.Object) bool {
 		if obj.ChecksumType != "" {
 			if obj.ChecksumType[0] != list2[i].ChecksumType[0] {
 				fmt.Printf("checksum types are not equal: (%q %q) %v != %v\n",
-					*obj.Key, *list2[i].Key, obj.ChecksumType[0], list2[i].ChecksumType[0])
+					*obj.Key, *list2[i].Key, obj.ChecksumType, list2[i].ChecksumType)
 				return false
 			}
 		}
+		if obj.Owner != nil {
+			if *obj.Owner.ID != *list2[i].Owner.ID {
+				fmt.Printf("object owner IDs not equal: (%q %q) %v != %v\n",
+					*obj.Key, *list2[i].Key, *obj.Owner.ID, *list2[i].Owner.ID)
+			}
+		}
 	}
 
 	return true