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
93
94
|
/*
* SPDX-FileCopyrightText: © Hypermode Inc. <hello@hypermode.com>
* SPDX-License-Identifier: Apache-2.0
*/
package badger
import (
"log"
"os"
)
// Logger is implemented by any logging system that is used for standard logs.
type Logger interface {
Errorf(string, ...interface{})
Warningf(string, ...interface{})
Infof(string, ...interface{})
Debugf(string, ...interface{})
}
// Errorf logs an ERROR log message to the logger specified in opts or to the
// global logger if no logger is specified in opts.
func (opt *Options) Errorf(format string, v ...interface{}) {
if opt.Logger == nil {
return
}
opt.Logger.Errorf(format, v...)
}
// Infof logs an INFO message to the logger specified in opts.
func (opt *Options) Infof(format string, v ...interface{}) {
if opt.Logger == nil {
return
}
opt.Logger.Infof(format, v...)
}
// Warningf logs a WARNING message to the logger specified in opts.
func (opt *Options) Warningf(format string, v ...interface{}) {
if opt.Logger == nil {
return
}
opt.Logger.Warningf(format, v...)
}
// Debugf logs a DEBUG message to the logger specified in opts.
func (opt *Options) Debugf(format string, v ...interface{}) {
if opt.Logger == nil {
return
}
opt.Logger.Debugf(format, v...)
}
type loggingLevel int
const (
DEBUG loggingLevel = iota
INFO
WARNING
ERROR
)
type defaultLog struct {
*log.Logger
level loggingLevel
}
func defaultLogger(level loggingLevel) *defaultLog {
return &defaultLog{Logger: log.New(os.Stderr, "badger ", log.LstdFlags), level: level}
}
func (l *defaultLog) Errorf(f string, v ...interface{}) {
if l.level <= ERROR {
l.Printf("ERROR: "+f, v...)
}
}
func (l *defaultLog) Warningf(f string, v ...interface{}) {
if l.level <= WARNING {
l.Printf("WARNING: "+f, v...)
}
}
func (l *defaultLog) Infof(f string, v ...interface{}) {
if l.level <= INFO {
l.Printf("INFO: "+f, v...)
}
}
func (l *defaultLog) Debugf(f string, v ...interface{}) {
if l.level <= DEBUG {
l.Printf("DEBUG: "+f, v...)
}
}
|
