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
175
176
177
178
179
180
181
182
183
|
package mlog
import (
"runtime"
"time"
"unicode/utf8"
)
// FormatWriterPlain a plain text structured log line.
// Example:
//
// 2016-04-29T20:49:12Z INFO this is a log
type FormatWriterPlain struct{}
// Emit constructs and formats a plain text log line (with optional extra Attrs), then writes it to logger
func (l *FormatWriterPlain) EmitAttrs(logger *Logger, level int, message string, extra ...*Attr) {
sb := bufPool.Get()
defer bufPool.Put(sb)
flags := logger.Flags()
// if time is being logged, handle time as soon as possible
if flags&(Ltimestamp|Ltai64n) != 0 {
t := time.Now()
if flags&Ltai64n != 0 {
writeTimeTAI64N(sb, &t, flags)
} else {
writeTime(sb, &t, flags)
}
sb.WriteByte(' ')
}
if flags&Llevel != 0 {
switch level {
case -1:
sb.WriteString(`DEBUG `)
case 1:
sb.WriteString(`FATAL `)
default:
sb.WriteString(`INFO `)
}
}
if flags&(Lshortfile|Llongfile) != 0 {
_, file, line, ok := runtime.Caller(3)
if !ok {
file = "???"
line = 0
}
if flags&Lshortfile != 0 {
short := file
for i := len(file) - 1; i > 0; i-- {
if file[i] == '/' {
short = file[i+1:]
break
}
}
file = short
}
sb.WriteString(file)
sb.WriteByte(':')
sb.AppendIntWidth(line, 0)
sb.WriteByte(' ')
}
encodeStringPlain(sb, message)
if len(extra) > 0 {
sb.WriteByte(' ')
attrsWriteBuf(sb, extra)
}
sb.WriteByte('\n')
sb.WriteTo(logger)
}
// Emit constructs and formats a plain text log line (with nillable extra Map), then writes it to logger
func (l *FormatWriterPlain) Emit(logger *Logger, level int, message string, extra Map) {
sb := bufPool.Get()
defer bufPool.Put(sb)
flags := logger.Flags()
// if time is being logged, handle time as soon as possible
if flags&(Ltimestamp|Ltai64n) != 0 {
t := time.Now()
if flags&Ltai64n != 0 {
writeTimeTAI64N(sb, &t, flags)
} else {
writeTime(sb, &t, flags)
}
sb.WriteByte(' ')
}
if flags&Llevel != 0 {
switch level {
case -1:
sb.WriteString(`DEBUG `)
case 1:
sb.WriteString(`FATAL `)
default:
sb.WriteString(`INFO `)
}
}
if flags&(Lshortfile|Llongfile) != 0 {
_, file, line, ok := runtime.Caller(3)
if !ok {
file = "???"
line = 0
}
if flags&Lshortfile != 0 {
short := file
for i := len(file) - 1; i > 0; i-- {
if file[i] == '/' {
short = file[i+1:]
break
}
}
file = short
}
sb.WriteString(file)
sb.WriteByte(':')
sb.AppendIntWidth(line, 0)
sb.WriteByte(' ')
}
encodeStringPlain(sb, message)
if len(extra) > 0 {
sb.WriteByte(' ')
if flags&Lsort != 0 {
extra.sortedWriteBuf(sb)
} else {
extra.unsortedWriteBuf(sb)
}
}
sb.WriteByte('\n')
sb.WriteTo(logger)
}
// modified from Go stdlib: encoding/json/encode.go:787-862 (approx)
func encodeStringPlain(e byteSliceWriter, s string) {
for i := 0; i < len(s); {
if b := s[i]; b < utf8.RuneSelf {
i++
if 0x20 <= b {
e.WriteByte(b)
continue
}
switch b {
case '\n':
e.WriteByte('\\')
e.WriteByte('n')
case '\r':
e.WriteByte('\\')
e.WriteByte('r')
case '\t':
e.WriteByte('\\')
e.WriteByte('t')
default:
e.WriteByte(b)
}
continue
}
c, size := utf8.DecodeRuneInString(s[i:])
if c == utf8.RuneError && size == 1 {
e.WriteString(`\ufffd`)
i++
continue
}
e.WriteString(s[i : i+size])
i += size
}
}
|
