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%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (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.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
%% License for the specific language governing rights and limitations
%% under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developers of the Original Code are LShift Ltd,
%% Cohesive Financial Technologies LLC, and Rabbit Technologies Ltd.
%%
%% Portions created before 22-Nov-2008 00:00:00 GMT by LShift Ltd,
%% Cohesive Financial Technologies LLC, or Rabbit Technologies Ltd
%% are Copyright (C) 2007-2008 LShift Ltd, Cohesive Financial
%% Technologies LLC, and Rabbit Technologies Ltd.
%%
%% Portions created by LShift Ltd are Copyright (C) 2007-2009 LShift
%% Ltd. Portions created by Cohesive Financial Technologies LLC are
%% Copyright (C) 2007-2009 Cohesive Financial Technologies
%% LLC. Portions created by Rabbit Technologies Ltd are Copyright
%% (C) 2007-2009 Rabbit Technologies Ltd.
%%
%% All Rights Reserved.
%%
%% Contributor(s): ______________________________________.
%%
-module(rabbit_error_logger).
-include("rabbit.hrl").
-define(LOG_EXCH_NAME, <<"amq.rabbitmq.log">>).
-behaviour(gen_event).
-export([init/1, terminate/2, code_change/3, handle_call/2, handle_event/2, handle_info/2]).
init([DefaultVHost]) ->
#exchange{} = rabbit_exchange:declare(
rabbit_misc:r(DefaultVHost, exchange, ?LOG_EXCH_NAME),
topic, true, false, []),
{ok, #resource{virtual_host = DefaultVHost,
kind = exchange,
name = ?LOG_EXCH_NAME}}.
terminate(_Arg, _State) ->
terminated_ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
handle_call(_Request, State) ->
{ok, not_understood, State}.
handle_event({Kind, _Gleader, {_Pid, Format, Data}}, State) ->
ok = publish(Kind, Format, Data, State),
{ok, State};
handle_event(_Event, State) ->
{ok, State}.
handle_info(_Info, State) ->
{ok, State}.
publish(error, Format, Data, State) ->
publish1(<<"error">>, Format, Data, State);
publish(warning_msg, Format, Data, State) ->
publish1(<<"warning">>, Format, Data, State);
publish(info_msg, Format, Data, State) ->
publish1(<<"info">>, Format, Data, State);
publish(_Other, _Format, _Data, _State) ->
ok.
publish1(RoutingKey, Format, Data, LogExch) ->
{ok, _QueueNames} = rabbit_exchange:simple_publish(
false, false, LogExch, RoutingKey, <<"text/plain">>,
list_to_binary(io_lib:format(Format, Data))),
ok.
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