crimson/osd: Port rgw watcher list

Implemented function cls_cxx_list_watchers for crimson

Signed-off-by: Nitzan Mordechai <nmordec@redhat.com>

diff --git a/src/crimson/osd/objclass.cc b/src/crimson/osd/objclass.cc
index ae3e61b3bc9d0e06aa8129714ec617dcb5fc9c16..ece780bf51ab4c2e96910c4e19c340e19f3f91e2 100644 (file)
--- a/src/crimson/osd/objclass.cc
+++ b/src/crimson/osd/objclass.cc
@@ -444,6 +444,17 @@ int cls_cxx_map_remove_key(cls_method_context_t hctx, const string &key)
 int cls_cxx_list_watchers(cls_method_context_t hctx,
                           obj_list_watch_response_t *watchers)
 {
+  OSDOp op{CEPH_OSD_OP_LIST_WATCHERS};
+  if (const auto ret = execute_osd_op(hctx, op); ret < 0) {
+    return ret;
+  }
+
+  try {
+    auto iter = op.outdata.cbegin();
+    decode(*watchers, iter);
+  } catch (buffer::error&) {
+    return -EIO;
+  }
   return 0;
 }