Add support for GLACIER_DA and forced GLACIER

Signed-off-by: Utkarsh Srivastava <[email protected]>

Author: tangledbytes

config.js

@@ -196,6 +196,14 @@ config.STS_CORS_EXPOSE_HEADERS = 'ETag';
 
 config.DENY_UPLOAD_TO_STORAGE_CLASS_STANDARD = false;
 
+/**
+ * NSFS_GLACIER_FORCE_STORAGE_CLASS when set to true
+ * will force `GLACIER` storage class if no storage class
+ * is provided and if `STANDARD` storage class is provided
+ * @type {boolean}
+ */
+config.NSFS_GLACIER_FORCE_STORAGE_CLASS = false;
+
 // S3_RESTORE_MAX_DAYS controls that for how many maximum number
 // of days an object can be restored using `restore-object` call.
 config.S3_RESTORE_REQUEST_MAX_DAYS = 30;

src/endpoint/s3/s3_rest.js

@@ -107,6 +107,9 @@ async function handle_request(req, res) {
     }
     http_utils.check_headers(req, headers_options);
 
+    // Will override the storage class if configured
+    s3_utils.override_storage_class(req);
+
     const redirect = await populate_request_additional_info_or_redirect(req);
     if (redirect) {
         res.setHeader('Location', redirect);

src/endpoint/s3/s3_utils.js

@@ -20,6 +20,8 @@ const STORAGE_CLASS_STANDARD = 'STANDARD';
 const STORAGE_CLASS_GLACIER = 'GLACIER'; // "S3 Glacier Flexible Retrieval"
 /** @type {nb.StorageClass} */
 const STORAGE_CLASS_GLACIER_IR = 'GLACIER_IR'; // "S3 Glacier Instant Retrieval"
+/** @type {nb.StorageClass} */
+const STORAGE_CLASS_GLACIER_DA = 'GLACIER_DA'; // "DBS3 specific Storage Class"
 
 const DEFAULT_S3_USER = Object.freeze({
     ID: '123',
@@ -382,6 +384,7 @@ function parse_storage_class(storage_class) {
     if (!storage_class) return STORAGE_CLASS_STANDARD;
     if (storage_class === STORAGE_CLASS_STANDARD) return STORAGE_CLASS_STANDARD;
     if (storage_class === STORAGE_CLASS_GLACIER) return STORAGE_CLASS_GLACIER;
+    if (storage_class === STORAGE_CLASS_GLACIER_DA) return STORAGE_CLASS_GLACIER_DA;
     if (storage_class === STORAGE_CLASS_GLACIER_IR) return STORAGE_CLASS_GLACIER_IR;
     throw new Error(`No such s3 storage class ${storage_class}`);
 }
@@ -819,9 +822,19 @@ function parse_body_public_access_block(req) {
     return parsed;
 }
 
+function override_storage_class(req) {
+    if (
+        config.NSFS_GLACIER_FORCE_STORAGE_CLASS &&
+        parse_storage_class_header(req) === STORAGE_CLASS_STANDARD
+    ) {
+        req.headers['x-amz-storage-class'] = STORAGE_CLASS_GLACIER;
+    }
+}
+
 exports.STORAGE_CLASS_STANDARD = STORAGE_CLASS_STANDARD;
 exports.STORAGE_CLASS_GLACIER = STORAGE_CLASS_GLACIER;
 exports.STORAGE_CLASS_GLACIER_IR = STORAGE_CLASS_GLACIER_IR;
+exports.STORAGE_CLASS_GLACIER_DA = STORAGE_CLASS_GLACIER_DA;
 exports.DEFAULT_S3_USER = DEFAULT_S3_USER;
 exports.DEFAULT_OBJECT_ACL = DEFAULT_OBJECT_ACL;
 exports.decode_chunked_upload = decode_chunked_upload;
@@ -863,5 +876,6 @@ exports.key_marker_to_cont_tok = key_marker_to_cont_tok;
 exports.parse_sse_c = parse_sse_c;
 exports.verify_string_byte_length = verify_string_byte_length;
 exports.parse_body_public_access_block = parse_body_public_access_block;
+exports.override_storage_class = override_storage_class;
 exports.OBJECT_ATTRIBUTES = OBJECT_ATTRIBUTES;
 exports.OBJECT_ATTRIBUTES_UNSUPPORTED = OBJECT_ATTRIBUTES_UNSUPPORTED;

src/sdk/namespace_fs.js

@@ -3610,11 +3610,15 @@ class NamespaceFS {
     }
 
     async _is_storage_class_supported(storage_class) {
+        const glacier_storage_classes = [
+            s3_utils.STORAGE_CLASS_GLACIER,
+            s3_utils.STORAGE_CLASS_GLACIER_DA,
+            s3_utils.STORAGE_CLASS_GLACIER_IR,
+        ];
+
         if (!storage_class || storage_class === s3_utils.STORAGE_CLASS_STANDARD) return true;
 
-        if (storage_class === s3_utils.STORAGE_CLASS_GLACIER) {
-            // TODO: Upon integration with underlying systems, we should
-            // check if archiving is actually supported or not
+        if (glacier_storage_classes.includes(storage_class)) {
             return config.NSFS_GLACIER_ENABLED || false;
         }
 

src/sdk/nb.d.ts

@@ -17,7 +17,7 @@ type DigestType = 'sha1' | 'sha256' | 'sha384' | 'sha512';
 type CompressType = 'snappy' | 'zlib';
 type CipherType = 'aes-256-gcm';
 type ParityType = 'isa-c1' | 'isa-rs' | 'cm256';
-type StorageClass = 'STANDARD' | 'GLACIER' | 'GLACIER_IR';
+type StorageClass = 'STANDARD' | 'GLACIER' | 'GLACIER_IR' | 'GLACIER_DA';
 type ResourceType = 'HOSTS' | 'CLOUD' | 'INTERNAL';
 type NodeType =
     'BLOCK_STORE_S3' |