[GitHub] [couchdb] gdamjan commented on a change in pull request #1912: a systemd-journald compatible log output on stderr

[GitBox <gi...@apache.org>]

gdamjan commented on a change in pull request #1912: a systemd-journald compatible log output on stderr
URL: https://github.com/apache/couchdb/pull/1912#discussion_r363053138
 
 

 ##########
 File path: src/couch_log/src/couch_log_writer_journald.erl
 ##########
 @@ -0,0 +1,69 @@
+% 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.
+
+
+% log level mapping from sd-daemon(3)
+% https://www.freedesktop.org/software/systemd/man/sd-daemon.html
+-spec level_to_integer(atom() | string() | integer()) -> integer().
+level_to_integer(debug)                 -> 7;
+level_to_integer(info)                  -> 6;
+level_to_integer(notice)                -> 5;
+level_to_integer(warning)               -> 4;
+level_to_integer(warn)                  -> 4;
+level_to_integer(error)                 -> 3;
+level_to_integer(err)                   -> 3;
+level_to_integer(critical)              -> 2;
+level_to_integer(crit)                  -> 2;
+level_to_integer(alert)                 -> 1;
+level_to_integer(emergency)             -> 0;
+level_to_integer(emerg)                 -> 0;
+level_to_integer(none)                  -> 6.
 
 Review comment:
   thanks, I'll have to double check that, it's been awhile since I wrote this patch.

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