| %% 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}. |