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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package log
import (
"bytes"
"os"
"log/syslog"
"github.com/sirupsen/logrus"
lSyslog "github.com/sirupsen/logrus/hooks/syslog"
"github.com/spf13/viper"
"github.com/superseriousbusiness/gotosocial/internal/config"
)
// Initialize initializes the global Logrus logger, reading the desired
// log level from the viper store, or using a default if the level
// has not been set in viper.
//
// It also sets the output to log.outputSplitter,
// so you get error logs on stderr and normal logs on stdout.
//
// If syslog settings are also in viper, then Syslog will be initialized as well.
func Initialize() error {
logrus.SetOutput(&outputSplitter{})
logrus.SetFormatter(&logrus.TextFormatter{
DisableColors: true,
DisableQuote: true,
FullTimestamp: true,
})
keys := config.Keys
// check if a desired log level has been set
logLevel := viper.GetString(keys.LogLevel)
if logLevel != "" {
level, err := logrus.ParseLevel(logLevel)
if err != nil {
return err
}
logrus.SetLevel(level)
if level == logrus.TraceLevel {
logrus.SetReportCaller(true)
}
}
// check if syslog has been enabled, and configure it if so
if syslogEnabled := viper.GetBool(keys.SyslogEnabled); syslogEnabled {
protocol := viper.GetString(keys.SyslogProtocol)
address := viper.GetString(keys.SyslogAddress)
hook, err := lSyslog.NewSyslogHook(protocol, address, syslog.LOG_INFO, "")
if err != nil {
return err
}
logrus.AddHook(hook)
}
return nil
}
// outputSplitter implements the io.Writer interface for use with Logrus, and simply
// splits logs between stdout and stderr depending on their severity.
// See: https://github.com/sirupsen/logrus/issues/403#issuecomment-346437512
type outputSplitter struct{}
func (splitter *outputSplitter) Write(p []byte) (n int, err error) {
if bytes.Contains(p, []byte("level=error")) {
return os.Stderr.Write(p)
}
return os.Stdout.Write(p)
}
|
