From 2b98965a2d36c1b437662ef3bef90d8f399978c2 Mon Sep 17 00:00:00 2001
From: Dimitrios Vasilas <dimitrios.vasilas@scality.com>
Date: Fri, 30 Jun 2023 15:39:46 +0200
Subject: [PATCH] wip

---
 constants.js    |  1 +
 lib/services.js | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/constants.js b/constants.js
index 7946248058..525f537b8b 100644
--- a/constants.js
+++ b/constants.js
@@ -110,6 +110,7 @@ const constants = {
 
     // user metadata header to set object locationConstraint
     objectLocationConstraintHeader: 'x-amz-meta-scal-location-constraint',
+    forcedLastModifiedTsHeader: 'x-amz-meta-x-scal-last-modified',
     legacyLocations: ['sproxyd', 'legacy'],
     /* eslint-disable camelcase */
     externalBackends: { aws_s3: true, azure: true, gcp: true },
diff --git a/lib/services.js b/lib/services.js
index 2fa7517b64..a0b071d694 100644
--- a/lib/services.js
+++ b/lib/services.js
@@ -18,6 +18,20 @@ const { parseTagFromQuery } = s3middleware.tagging;
 const usersBucket = constants.usersBucket;
 const oldUsersBucket = constants.oldUsersBucket;
 
+function _maybeSetLastModifiedFromHeader(md, metaHeaders) {
+    const forcedLastModifiedTsHeader = constants.forcedLastModifiedTsHeader;
+
+    if (metaHeaders[forcedLastModifiedTsHeader]) {
+        const forcedLastModifiedTs = Date.parse(metaHeaders[forcedLastModifiedTsHeader]);
+        const forcedLastModified = new Date(forcedLastModifiedTs).toJSON();
+
+        // eslint-disable-next-line no-param-reassign
+        md._data['last-modified'] = forcedLastModified;
+        // eslint-disable-next-line no-param-reassign
+        delete metaHeaders[forcedLastModifiedTsHeader];
+    }
+}
+
 const services = {
     getService(authInfo, request, log, splitter, cb, overrideUserbucket) {
         const canonicalID = authInfo.getCanonicalID();
@@ -101,6 +115,9 @@ const services = {
         log.trace('storing object in metadata');
         assert.strictEqual(typeof bucketName, 'string');
         const md = new ObjectMD();
+
+        _maybeSetLastModifiedFromHeader(md, metaHeaders);
+
         // This should be object creator's canonical ID.
         md.setOwnerId(authInfo.getCanonicalID())
             .setCacheControl(cacheControl)