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
|
% Licensed 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(couch_log_writer_journald).
-behaviour(couch_log_writer).
-export([
init/0,
terminate/2,
write/2
]).
-include("couch_log.hrl").
init() ->
{ok, nil}.
terminate(_, _St) ->
ok.
write(Entry, St) ->
#log_entry{
level = Level,
pid = Pid,
msg = Msg,
msg_id = MsgId
} = Entry,
Fmt = "<~B>~s ~p ~s ",
Args = [
level_for_journald(Level),
node(),
Pid,
MsgId
],
MsgSize = couch_log_config:get(max_message_size),
Data = couch_log_trunc_io:format(Fmt, Args, MsgSize),
io:format(standard_error, [Data, Msg, "\n"], []),
{ok, St}.
% log level mapping from sd-daemon(3)
% https://www.freedesktop.org/software/systemd/man/sd-daemon.html
-spec level_for_journald(atom()) -> integer().
level_for_journald(Level) when is_atom(Level) ->
case Level of
debug -> 7;
info -> 6;
notice -> 5;
warning -> 4;
error -> 3;
critical -> 2;
alert -> 1;
emergency -> 0;
_ -> 3
end.
|
