%%%-------------------------------------------------------------------
%%% @author Evgeniy Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2013, Evgeniy Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 12 May 2013 by Evgeniy Khramtsov <ekhramtsov@process-one.net>
%%%
%%% ejabberd, Copyright (C) 2013 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License
%%% along with this program; if not, write to the Free Software
%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
%%% 02111-1307 USA
%%%-------------------------------------------------------------------
-module(ejabberd_logger).
%% API
-export([start/0, reopen_log/0, get/0, set/1, get_log_path/0]).
-include("ejabberd.hrl").
-type loglevel() :: 0 | 1 | 2 | 3 | 4 | 5.
-spec start() -> ok.
-spec get_log_path() -> string().
-spec reopen_log() -> ok.
-spec get() -> {loglevel(), atom(), string()}.
-spec set(loglevel() | {loglevel(), list()}) -> {module, module()}.
%%%===================================================================
%%% API
%%%===================================================================
%% @doc Returns the full path to the ejabberd log file.
%% It first checks for application configuration parameter 'log_path'.
%% If not defined it checks the environment variable EJABBERD_LOG_PATH.
%% And if that one is neither defined, returns the default value:
%% "ejabberd.log" in current directory.
get_log_path() ->
case application:get_env(ejabberd, log_path) of
{ok, Path} ->
Path;
undefined ->
case os:getenv("EJABBERD_LOG_PATH") of
false ->
?LOG_PATH;
Path ->
Path
end
end.
-ifdef(LAGER).
start() ->
application:load(lager),
ConsoleLog = get_log_path(),
Dir = filename:dirname(ConsoleLog),
ErrorLog = filename:join([Dir, "error.log"]),
CrashLog = filename:join([Dir, "crash.log"]),
application:set_env(
lager, handlers,
[{lager_console_backend, info},
{lager_file_backend, [{file, ConsoleLog}, {level, info}, {count, 1}]},
{lager_file_backend, [{file, ErrorLog}, {level, error}, {count, 1}]}]),
application:set_env(lager, crash_log, CrashLog),
ejabberd:start_app(lager),
ok.
reopen_log() ->
lists:foreach(
fun({lager_file_backend, File}) ->
whereis(lager_event) ! {rotate, File};
(_) ->
ok
end, gen_event:which_handlers(lager_event)),
reopen_sasl_log().
get() ->
case lager:get_loglevel(lager_console_backend) of
none -> {0, no_log, "No log"};
emergency -> {1, critical, "Critical"};
alert -> {1, critical, "Critical"};
critical -> {1, critical, "Critical"};
error -> {2, error, "Error"};
warning -> {3, warning, "Warning"};
notice -> {3, warning, "Warning"};
info -> {4, info, "Info"};
debug -> {5, debug, "Debug"}
end.
set(LogLevel) when is_integer(LogLevel) ->
LagerLogLevel = case LogLevel of
0 -> none;
1 -> critical;
2 -> error;
3 -> warning;
4 -> info;
5 -> debug
end,
case lager:get_loglevel(lager_console_backend) of
LagerLogLevel ->
ok;
_ ->
ConsoleLog = get_log_path(),
lists:foreach(
fun({lager_file_backend, File} = H) when File == ConsoleLog ->
lager:set_loglevel(H, LagerLogLevel);
(lager_console_backend = H) ->
lager:set_loglevel(H, LagerLogLevel);
(_) ->
ok
end, gen_event:which_handlers(lager_event))
end,
{module, lager};
set({_LogLevel, _}) ->
error_logger:error_msg("custom loglevels are not supported for 'lager'"),
{module, lager}.
-else.
start() ->
set(4),
LogPath = get_log_path(),
error_logger:add_report_handler(p1_logger_h, LogPath),
ok.
reopen_log() ->
%% TODO: Use the Reopen log API for logger_h ?
p1_logger_h:reopen_log(),
reopen_sasl_log().
get() ->
p1_loglevel:get().
set(LogLevel) ->
p1_loglevel:set(LogLevel).
-endif.
%%%===================================================================
%%% Internal functions
%%%===================================================================
reopen_sasl_log() ->
case application:get_env(sasl,sasl_error_logger) of
{ok, {file, SASLfile}} ->
error_logger:delete_report_handler(sasl_report_file_h),
rotate_sasl_log(SASLfile),
error_logger:add_report_handler(sasl_report_file_h,
{SASLfile, get_sasl_error_logger_type()});
_ -> false
end,
ok.
rotate_sasl_log(Filename) ->
case file:read_file_info(Filename) of
{ok, _FileInfo} ->
file:rename(Filename, [Filename, ".0"]),
ok;
{error, _Reason} ->
ok
end.
%% Function copied from Erlang/OTP lib/sasl/src/sasl.erl which doesn't export it
get_sasl_error_logger_type () ->
case application:get_env (sasl, errlog_type) of
{ok, error} -> error;
{ok, progress} -> progress;
{ok, all} -> all;
{ok, Bad} -> exit ({bad_config, {sasl, {errlog_type, Bad}}});
_ -> all
end.
