HTTP controller API: refactoring

Simplify adding config use the same methods as in erGW config

apps/ergw/src/ergw_config.erl

@@ -14,6 +14,7 @@
 
 %% API
 -export([load/0, apply/1, serialize_config/1, load_part_of_config/1]).
+-export([ergw_core_init/2]).
 
 -ifdef(TEST).
 -export([config_meta/0,
@@ -195,8 +196,9 @@ ergw_core_init(proxy_map, #{proxy_map := Map}) ->
     ok = ergw_core:setopts(proxy_map, Map);
 ergw_core_init(http_api, #{http_api := Opts}) ->
     ergw_http_api:init(Opts);
-ergw_core_init(_K, _) ->
-    ok.
+ergw_core_init(_K, Opts) ->
+		?LOG(warning, "Unhandled config option ~p~n", [Opts]),
+		{error, unhandled}.
 
 ergw_charging_init(rules, #{rules := Rules}) ->
     maps:map(fun ergw_core:add_charging_rule/2, Rules);

apps/ergw/src/http_controller_handler.erl

@@ -108,22 +108,10 @@ apply_config(Map) ->
             {error, #{type => <<"error">>, message => <<"Unhandled error">>}}
     end.
 
-add_config_part(ip_pools, Pools, Acc) ->
-    Result = maps:map(fun ergw_core:add_ip_pool/2, Pools),
-    ?LOG(info, "Pools ~p added", [Result]),
-    maps:merge(Acc, Result);
-add_config_part(apns, APNs, Acc) ->
-    Result = maps:map(fun ergw_core:add_apn/2, APNs),
-    ?LOG(info, "APNS ~p added", [Result]),
-    maps:merge(Acc, Result);
-add_config_part(upf_nodes, UP, Acc) ->
-    ergw_core:setopts(sx_defaults, maps:get(default, UP, #{})),
-    Result = maps:map(fun ergw_core:add_sx_node/2, maps:get(entries, UP, #{})),
-    ?LOG(info, "UPF nodes ~p added", [Result]),
-    maps:merge(Acc, Result);
 add_config_part(K, V, Acc) ->
-    ?LOG(warning, "Unhandled config parameter ~p with value ~p", [K, V]),
-    Acc.
+    Result = ergw_config:ergw_core_init(K, #{K => V}),
+    ?LOG(info, "The ~p added with result ~p", [K, Result]),
+    maps:merge(Acc, Result).
 
 json_to_map(JsonBin) ->
     case catch jsx:decode(JsonBin) of