Add OpenStack Swift API Support (#2066)

Co-authored-by: houseme <housemecn@gmail.com>
Co-authored-by: Copilot <noreply@github.com>

crates/protocols/src/common/gateway.rs

@@ -155,6 +155,33 @@ pub fn is_operation_supported(protocol: super::session::Protocol, action: &S3Act
             S3Action::ListBuckets => true, // LIST at root level
             S3Action::HeadBucket => true,  // Can check if directory exists
         },
+        super::session::Protocol::Swift => match action {
+            // Swift supports most S3 operations via translation
+            S3Action::CreateBucket => true, // PUT container
+            S3Action::DeleteBucket => true, // DELETE container
+            S3Action::GetObject => true,    // GET object
+            S3Action::PutObject => true,    // PUT object
+            S3Action::DeleteObject => true, // DELETE object
+            S3Action::HeadObject => true,   // HEAD object
+            S3Action::CopyObject => true,   // COPY method
+            S3Action::ListBucket => true,   // GET container
+            S3Action::ListBuckets => true,  // GET account
+            S3Action::HeadBucket => true,   // HEAD container
+
+            // Multipart not directly supported by Swift API (uses different approach)
+            S3Action::CreateMultipartUpload => false,
+            S3Action::UploadPart => false,
+            S3Action::CompleteMultipartUpload => false,
+            S3Action::AbortMultipartUpload => false,
+            S3Action::ListMultipartUploads => false,
+            S3Action::ListParts => false,
+
+            // ACL operations not supported by Swift API (uses different model)
+            S3Action::GetBucketAcl => false,
+            S3Action::PutBucketAcl => false,
+            S3Action::GetObjectAcl => false,
+            S3Action::PutObjectAcl => false,
+        },
     }
 }
 

crates/protocols/src/common/session.rs

@@ -20,6 +20,7 @@ use std::sync::Arc;
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Protocol {
     Ftps,
+    Swift,
 }
 
 /// Protocol principal representing an authenticated user