MB-48306 [BP] Make clusterEncryptionLevel available on pools/default

Squash of below 3 changes,
MB-47768: Make clusterEncryptionLevel available on pools/default
Reviewed-on: http://review.couchbase.org/c/ns_server/+/158833

MB-47974: pools/default needs effective clusterEncryptionLevel
Reviewed-on: http://review.couchbase.org/c/ns_server/+/159503

remove unnecessary fun
Reviewed-on: http://review.couchbase.org/c/ns_server/+/159504

Change-Id: I9a1e392dc9699c2fa72227e189d5c2fa8099706f
Reviewed-on: http://review.couchbase.org/c/ns_server/+/160784
Tested-by: Build Bot <[email protected]>
Well-Formed: Restriction Checker
Reviewed-by: Steve Watanabe <[email protected]>

Author: anuthan

src/menelaus_web_pools.erl

@@ -239,6 +239,8 @@ do_build_pool_info(Id, InfoLevel, Stability, LocalAddr) ->
           <<"/pools/default/serverGroups?v=",
             (list_to_binary(integer_to_list(GroupsV)))/binary>>},
          {clusterName, list_to_binary(get_cluster_name())},
+         {clusterEncryptionLevel,
+          misc:get_effective_cluster_encryption_level(Config)},
          {balanced, ns_cluster_membership:is_balanced()},
          menelaus_web_node:build_memory_quota_info(Config),
          build_ui_params(InfoLevel, Config),

src/misc.erl

@@ -1474,6 +1474,15 @@ get_cluster_encryption_level() ->
               end,
     ns_config:search(ns_config:latest(), cluster_encryption_level, Default).
 
+-spec get_effective_cluster_encryption_level(term()) -> none | control | all.
+get_effective_cluster_encryption_level(Config) ->
+    case is_cluster_encryption_fully_enabled() of
+        true ->
+            ns_config:search(Config, cluster_encryption_level, control);
+        false ->
+            none
+    end.
+
 -spec should_cluster_data_be_encrypted() -> true | false.
 should_cluster_data_be_encrypted() ->
     get_cluster_encryption_level() =:= all.