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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2020-2020. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%----------------------------------------------------------------------
%% Purpose: Handle server side TLS-1.2 session storage
%%----------------------------------------------------------------------
-module(ssl_server_session_cache_db).
%%-behaviour(ssl_session_cache_api).
%% API
-export([init/1,
lookup/2,
update/3,
delete/2,
size/1,
take_oldest/1]).
%%%===================================================================
%%% API
%%%===================================================================
%%--------------------------------------------------------------------
%% Description: Return table reference.
%%--------------------------------------------------------------------
init(_Options) ->
gb_trees:empty().
%%--------------------------------------------------------------------
%% Description: Looks up a cach entry. Should be callable from any
%% process.
%%--------------------------------------------------------------------
lookup(Cache, Key) ->
case gb_trees:lookup(Key, Cache) of
{value, Session} ->
Session;
none ->
undefined
end.
%%--------------------------------------------------------------------
%% Description: Caches a new session or updates a already cached one.
%% Will only be called from the ssl_server_cache process.
%%--------------------------------------------------------------------
update(Cache, Key, Session) ->
gb_trees:insert(Key, Session, Cache).
%%--------------------------------------------------------------------
%% Description: Delets a cache entry.
%% Will only be called from the ssl_server_cache process.
%%--------------------------------------------------------------------
delete(Cache, Key) ->
gb_trees:delete(Key, Cache).
%%--------------------------------------------------------------
%% Description: Returns the cache size
%%--------------------------------------------------------------------
size(Cache) ->
gb_trees:size(Cache).
%%--------------------------------------------------------------
%% Description: Returns the oldest cache entry
%%--------------------------------------------------------------------
take_oldest(Cache) ->
gb_trees:take_smallest(Cache).
|
