[Minor] Add method to get the whole configuration in Lua

diff --git a/src/lua/lua_config.c b/src/lua/lua_config.c
index 0eea492ca6322fb9582f2b35aead6998ab9753f7..cba81c2a617b1bad3c0c84e55b8ee084251ae5d0 100644 (file)
--- a/src/lua/lua_config.c
+++ b/src/lua/lua_config.c
@@ -55,6 +55,14 @@ LUA_FUNCTION_DEF (config, get_module_opt);
  * @return {table} table of all options for `mname` or `nil` if a module's configuration is not found
  */
 LUA_FUNCTION_DEF (config, get_all_opt);
+
+/***
+ * @method rspamd_config:get_ucl()
+ * Returns full configuration as a native Lua object (ucl to lua conversion).
+ * This method uses caching if possible.
+ * @return {table} table of all options in the configuration
+ */
+LUA_FUNCTION_DEF (config, get_ucl);
 /***
  * @method rspamd_config:get_mempool()
  * Returns static configuration memory pool.
@@ -613,6 +621,7 @@ static const struct luaL_reg configlib_m[] = {
        LUA_INTERFACE_DEF (config, get_mempool),
        LUA_INTERFACE_DEF (config, get_resolver),
        LUA_INTERFACE_DEF (config, get_all_opt),
+       LUA_INTERFACE_DEF (config, get_ucl),
        LUA_INTERFACE_DEF (config, add_radix_map),
        LUA_INTERFACE_DEF (config, radix_from_config),
        LUA_INTERFACE_DEF (config, add_hash_map),
@@ -810,6 +819,48 @@ lua_config_get_all_opt (lua_State * L)
        return 1;
 }
 
+struct rspamd_lua_cached_config {
+       lua_State *L;
+       gint ref;
+};
+
+static void
+lua_config_ucl_dtor (gpointer p)
+{
+       struct rspamd_lua_cached_config *cached = p;
+
+       luaL_unref (cached->L, LUA_REGISTRYINDEX, cached->ref);
+}
+
+static gint
+lua_config_get_ucl (lua_State * L)
+{
+       struct rspamd_config *cfg = lua_check_config (L, 1);
+       struct rspamd_lua_cached_config *cached;
+
+       if (cfg) {
+               cached = rspamd_mempool_get_variable (cfg->cfg_pool, "ucl_cached");
+
+               if (cached) {
+                       lua_rawgeti (L, LUA_REGISTRYINDEX, cached->ref);
+               }
+               else {
+                       ucl_object_push_lua (L, cfg->rcl_obj, true);
+                       lua_pushvalue (L, -1);
+                       cached = rspamd_mempool_alloc (cfg->cfg_pool, sizeof (*cached));
+                       cached->L = L;
+                       cached->ref = luaL_ref (L, LUA_REGISTRYINDEX);
+                       rspamd_mempool_set_variable (cfg->cfg_pool, "ucl_cached",
+                                       cached, lua_config_ucl_dtor);
+               }
+       }
+       else {
+               return luaL_error (L, "invalid arguments");
+       }
+
+       return 1;
+}
+
 
 static gint
 lua_config_get_classifier (lua_State * L)