From: Casey Bodley <cbodley@redhat.com>
Date: Mon, 3 Jul 2023 19:00:17 +0000 (-0400)
Subject: rgw: require zonegroup feature to compress encrypted objects
X-Git-Tag: v18.1.3~40^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=599fc3c79eaf677960b36ee90737e435b7aee47f;p=ceph.git

rgw: require zonegroup feature to compress encrypted objects

Reef adds support for combining server-side encryption and compression,
but previous releases would not replicate such objects correctly. gate
the feature behind a zonegroup feature flag to require that all zones
upgrade to reef before enabling. this feature is not enabled by default
in new zonegroups

Fixes: https://tracker.ceph.com/issues/57905

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 4bc52954ab7b38a8eac50c116196d6db728cee00)

Conflicts:
	src/rgw/rgw_op.cc: SiteConfig -> sal::ZoneGroup::supports
---

diff --git a/src/rgw/rgw_op.cc b/src/rgw/rgw_op.cc
index b9715e6b2bd..79d7e939694 100644
--- a/src/rgw/rgw_op.cc
+++ b/src/rgw/rgw_op.cc
@@ -4182,7 +4182,11 @@ void RGWPutObj::execute(optional_yield y)
     if (encrypt != nullptr) {
       filter = &*encrypt;
     }
-    if (compression_type != "none") {
+    // a zonegroup feature is required to combine compression and encryption
+    const rgw::sal::ZoneGroup& zonegroup = driver->get_zone()->get_zonegroup();
+    const bool compress_encrypted = zonegroup.supports(rgw::zone_features::compress_encrypted);
+    if (compression_type != "none" &&
+        (encrypt == nullptr || compress_encrypted)) {
       plugin = get_compressor_plugin(s, compression_type);
       if (!plugin) {
         ldpp_dout(this, 1) << "Cannot load plugin for compression type "
diff --git a/src/rgw/rgw_zone_features.h b/src/rgw/rgw_zone_features.h
index 7e47f8cf4a7..5e1a435d488 100644
--- a/src/rgw/rgw_zone_features.h
+++ b/src/rgw/rgw_zone_features.h
@@ -14,10 +14,12 @@ namespace rgw::zone_features {
 
 // zone feature names
 inline constexpr std::string_view resharding = "resharding";
+inline constexpr std::string_view compress_encrypted = "compress-encrypted";
 
 // static list of features supported by this release
 inline constexpr std::initializer_list<std::string_view> supported = {
   resharding,
+  compress_encrypted,
 };
 
 inline constexpr bool supports(std::string_view feature) {