emqx/apps/emqx_gateway/src/bhvrs/emqx_gateway_impl.erl
2022-01-05 20:55:00 +01:00

43 lines
1.6 KiB
Erlang

%%--------------------------------------------------------------------
%% Copyright (c) 2021-2022 EMQ Technologies Co., Ltd. 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.
%%--------------------------------------------------------------------
-module(emqx_gateway_impl).
-include("include/emqx_gateway.hrl").
-type state() :: map().
-type reason() :: any().
%% @doc
-callback on_gateway_load(Gateway :: gateway(),
Ctx :: emqx_gateway_ctx:context())
-> {error, reason()}
| {ok, [ChildPid :: pid()], GwState :: state()}
%% TODO: v0.2 The child spec is better for restarting child process
| {ok, [Childspec :: supervisor:child_spec()], GwState :: state()}.
%% @doc
-callback on_gateway_update(Config :: emqx_config:config(),
Gateway :: gateway(),
GwState :: state())
-> ok
| {ok, [ChildPid :: pid()], NGwState :: state()}
| {ok, [Childspec :: supervisor:child_spec()], NGwState :: state()}
| {error, reason()}.
%% @doc
-callback on_gateway_unload(Gateway :: gateway(), GwState :: state()) -> ok.