Add lager.hrl

include/lager.hrl

@@ -0,0 +1,64 @@
+%% Copyright (c) 2011 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.
+
+-define(LEVELS,
+    [debug, info, notice, warning, error, critical, alert, emergency]).
+
+-define(DEBUG, 7).
+-define(INFO, 6).
+-define(NOTICE, 5).
+-define(WARNING, 4).
+-define(ERROR, 3).
+-define(CRITICAL, 2).
+-define(ALERT, 1).
+-define(EMERGENCY, 0).
+
+-define(LEVEL2NUM(Level),
+    case Level of
+        debug -> ?DEBUG;
+        info -> ?INFO;
+        notice -> ?NOTICE;
+        warning -> ?WARNING;
+        error -> ?ERROR;
+        critical -> ?CRITICAL;
+        alert -> ?ALERT;
+        emergency -> ?EMERGENCY
+    end).
+
+-define(NUM2LEVEL(Num),
+    case Num of
+        ?DEBUG -> debug;
+        ?INFO -> info;
+        ?NOTICE -> notice;
+        ?WARNING -> warning;
+        ?ERROR -> error;
+        ?CRITICAL -> critical;
+        ?ALERT -> alert;
+        ?EMERGENCY -> emergency
+    end).
+
+-define(SHOULD_LOG(Level),
+    ?LEVEL2NUM(Level) =< lager_mochiglobal:get(loglevel, ?DEBUG)).
+
+%% internal non-blocking logging call
+-define(INT_LOG(Level, Format, Args),
+    case ?SHOULD_LOG(Level) of
+        true ->
+            gen_event:notify(lager_event, {log, lager_util:level_to_num(Level),
+                    lager_util:format_time(), [io_lib:format("[~p] ~p ", [Level, self()]), io_lib:format(Format, Args)]});
+        _ -> ok
+    end).
+