slog/slog.go at master · nefeg/slog · GitHub

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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
package slog

/**
Methods:
	Debug(v ...interface{})
	Debugln(v ...interface{})
	Debugf(format string, v ...interface{})

	Info(v ...interface{})
	Infoln(v ...interface{})
	Infof(format string, v ...interface{})

	Notice(v ...interface{})
	Noticeln(v ...interface{})
	Noticef(format string, v ...interface{})

	Warn(v ...interface{})
	Warnln(v ...interface{})
	Warnf(format string, v ...interface{})

	Err(v ...interface{})
	Errln(v ...interface{})
	Errf(format string, v ...interface{})

	Crit(v ...interface{})
	Critln(v ...interface{})
	Critf(format string, v ...interface{})

	Fatal(v ...interface{})
	Fatalln(v ...interface{})
	Fatalf(format string, v ...interface{})

	Panic(v ...interface{})
	Panicln(v ...interface{})
	PanicF(format string, v ...interface{})

Levels:
	LvlNone     -1
	LvlAll      0
	LvlDebug    10
	LvlInfo     20
	LvlNotice   30
	LvlWarn     40
	LvlError    50
	LvlCrit     60
 */
type slog struct{
	CurrentLevel    Level
	CurrentFormat   Format

	loggers         map[Level][]*SLogger
}

var s *slog

var Debug,  Debugln,    Debugf  SLogger
var Info,   Infoln,     Infof   SLogger
var Notice, Noticeln,   Noticef SLogger
var Warn,   Warnln,     Warnf   SLogger
var Err,    Errln,      Errf    SLogger
var Crit,   Critln,     Critf   SLogger
var Fatal,  Fatalln,    Fatalf  SLogger
var Panic,  Panicln,    Panicf  SLogger
var DebugPanic,  DebugPanicln,    DebugPanicf  SLogger


func init(){

	s = &slog{}
	s.loggers = map[Level][]*SLogger{}

	SetLevel( LvlNone )
	SetFormat( FormatDefault )

	Bind(&Debug,    logStd,     LvlDebug,   false )
	Bind(&Debugln,  logStdLn,   LvlDebug,   false )
	Bind(&Debugf,   logStdF,    LvlDebug,   false )

	Bind(&Info,     logStd,     LvlInfo,    false )
	Bind(&Infoln,   logStdLn,   LvlInfo,    false )
	Bind(&Infof,    logStdF,    LvlInfo,    false )

	Bind(&Notice,   logStd,     LvlNotice,  false )
	Bind(&Noticeln, logStdLn,   LvlNotice,  false )
	Bind(&Noticef,  logStdF,    LvlNotice,  false )

	Bind(&Warn,     logStd,     LvlWarn,    false )
	Bind(&Warnln,   logStdLn,   LvlWarn,    false )
	Bind(&Warnf,    logStdF,    LvlWarn,    false )

	Bind(&Err,      logStd,     LvlError,   false )
	Bind(&Errln,    logStdLn,   LvlError,   false )
	Bind(&Errf,     logStdF,    LvlError,   false )

	Bind(&Crit,     logStd,     LvlCrit,    false )
	Bind(&Critln,   logStdLn,   LvlCrit,    false )
	Bind(&Critf,    logStdF,    LvlCrit,    false )

	Bind(&Panic,    logPanic,     LvlNone,    false )
	Bind(&Panicln,  logPanicLn,   LvlNone,    false )
	Bind(&Panicf,   logPanicF,    LvlNone,    false )

	Bind(&Fatal,    logFatal,     LvlNone,    false )
	Bind(&Fatalln,  logFatalLn,   LvlNone,    false )
	Bind(&Fatalf,   logFatalF,    LvlNone,    false )

	Bind(&DebugPanic,    logPanic,     LvlDebug,   false )
	Bind(&DebugPanicln,  logPanicLn,   LvlDebug,   false )
	Bind(&DebugPanicf,   logPanicF,    LvlDebug,   false )

	Debugf("[slog] init with level: %s\n", GetLevel().Name)
}

// Bind custom logger to log-level via reference
//
// var MyPanicLogger slog.SLogger
// slog.Bind(&MyPanicLogger, 6, func(data ...interface{}) {log.Panic(data)} )
//
// !if level == LvlNone function will call always
func Bind(value *SLogger, fn SLogger, level Level, override bool ){

	*value = fn

	Wrap(value, level, override)
}


// Get custom logger to log-level
//
// var MyPanicLogger slog.SLogger = slog.GetSLogger(6, func(data ...interface{}) {log.Panic(data)} )
func Wrap(fn *SLogger, level Level, override bool  ) {

	if override && len(s.loggers[level]) >0{
		s.loggers[level] = []*SLogger{}
	}

	fnSource := *fn // for avoid circular reference errors
	*fn = func(data ...interface{}) interface{}{
		if (s.CurrentLevel.Value >= 0 && s.CurrentLevel.Value <= level.Value) || level.Value <0{
			return fnSource(data...)
		}

		return nil
	}

	s.loggers[level] = append(s.loggers[level], fn)
}

func SetLevel(level Level){
	s.CurrentLevel = level
}

func GetLevel() Level{
	return s.CurrentLevel
}

func GetLevels() []Level{

	levels := make([]Level, 0, len(s.loggers))
	for l := range s.loggers {
		levels = append(levels, l)
	}

	return levels
}

func SetFormat(format Format){
	s.CurrentFormat = format
}

func GetFormat() Format{
	return s.CurrentFormat
}