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%% Copyright (c) 2011-2012 Basho Technologies, Inc. All Rights Reserved.
%%
%% This file is provided to you 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(lager_crash_backend).
-include("lager.hrl").
-behaviour(gen_event).
-export([init/1, handle_call/2, handle_event/2, handle_info/2, terminate/2,
code_change/3]).
-ifdef(TEST).
-include_lib("eunit/include/eunit.hrl").
-endif.
init([CrashBefore, CrashAfter]) ->
case is_tuple(CrashBefore) andalso (timer:now_diff(CrashBefore, os:timestamp()) > 0) of
true ->
%?debugFmt("crashing!~n", []),
{error, crashed};
_ ->
%?debugFmt("Not crashing!~n", []),
case is_tuple(CrashAfter) of
true ->
CrashTime = timer:now_diff(CrashAfter, os:timestamp()) div 1000,
case CrashTime > 0 of
true ->
%?debugFmt("crashing in ~p~n", [CrashTime]),
erlang:send_after(CrashTime, self(), crash),
{ok, {}};
_ -> {error, crashed}
end;
_ ->
{ok, {}}
end
end.
handle_call(_Request, State) ->
{ok, ok, State}.
handle_event(_Event, State) ->
{ok, State}.
handle_info(crash, _State) ->
%?debugFmt("Time to crash!~n", []),
crash;
handle_info(_Info, State) ->
{ok, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
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