1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
%% 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(weatherreport_log).
-export([
level/1,
log/3,
log/4,
should_log/1
]).
level(debug) ->
7;
level(info) ->
6;
level(notice) ->
5;
level(warn) ->
4;
level(warning) ->
4;
level(err) ->
3;
level(error) ->
3;
level(crit) ->
2;
level(alert) ->
1;
level(emerg) ->
0;
level(panic) ->
0;
level(I) when is_integer(I), I >= 0, I =< 7 ->
I;
level(_BadLevel) ->
3.
log(Node, Level, Format, Terms) ->
case should_log(Level) of
true ->
Prefix = get_prefix(Node, Level),
Message = io_lib:format(Format, Terms),
io:format("~s ~s~n", [Prefix, Message]);
false ->
ok
end.
log(Node, Level, String) ->
case should_log(Level) of
true ->
Prefix = get_prefix(Node, Level),
io:format("~s ~s~n", [Prefix, String]);
false ->
ok
end.
should_log(Level) ->
AppLevel =
case application:get_env(weatherreport, log_level) of
undefined -> info;
{ok, L0} -> L0
end,
level(AppLevel) >= level(Level).
get_prefix(Node, Level) ->
io_lib:format("[~w] [~w]", [Node, Level]).
|
