rgw/multisite: handle object stat output of attrs

"user.rgw.replicated-at"

Signed-off-by: Shilpa Jagannath <smanjara@redhat.com>

PendingReleaseNotes

@@ -1,5 +1,8 @@
 >=19.0.0
 
+* RGW: GetObject and HeadObject requests now return a x-rgw-replicated-at
+  header for replicated objects. This timestamp can be compared against the
+  Last-Modified header to determine how long the object took to replicate.
 * The cephfs-shell utility is now packaged for RHEL 9 / CentOS 9 as required
   python dependencies are now available in EPEL9.
 * RGW: S3 multipart uploads using Server-Side Encryption now replicate correctly in

src/rgw/rgw_admin.cc

@@ -8355,7 +8355,12 @@ int main(int argc, const char **argv)
 
     formatter->open_object_section("attrs");
     for (iter = other_attrs.begin(); iter != other_attrs.end(); ++iter) {
-      dump_string(iter->first.c_str(), iter->second, formatter.get());
+      bufferlist& bl = iter->second;
+      if (iter->first == RGW_ATTR_OBJ_REPLICATION_TIMESTAMP) {
+        decode_dump<ceph::real_time>("user.rgw.replicated-at", bl, formatter.get());
+      } else {
+        dump_string(iter->first.c_str(), iter->second, formatter.get());
+      }
     }
     formatter->close_section();
     formatter->close_section();