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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package log
import (
"bytes"
"fmt"
"io"
"regexp"
"strings"
"sync"
)
type byteArrayWriter []byte
func (b *byteArrayWriter) Write(p []byte) (int, error) {
*b = append(*b, p...)
return len(p), nil
}
// WriterLogger represent a basic logger for Gitea
type WriterLogger struct {
out io.WriteCloser
mu sync.Mutex
Level Level `json:"level"`
StacktraceLevel Level `json:"stacktraceLevel"`
Flags int `json:"flags"`
Prefix string `json:"prefix"`
Colorize bool `json:"colorize"`
Expression string `json:"expression"`
regexp *regexp.Regexp
}
// NewWriterLogger creates a new WriterLogger from the provided WriteCloser.
// Optionally the level can be changed at the same time.
func (logger *WriterLogger) NewWriterLogger(out io.WriteCloser, level ...Level) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.out = out
switch logger.Flags {
case 0:
logger.Flags = LstdFlags
case -1:
logger.Flags = 0
}
if len(level) > 0 {
logger.Level = level[0]
}
logger.createExpression()
}
func (logger *WriterLogger) createExpression() {
if len(logger.Expression) > 0 {
var err error
logger.regexp, err = regexp.Compile(logger.Expression)
if err != nil {
logger.regexp = nil
}
}
}
// GetLevel returns the logging level for this logger
func (logger *WriterLogger) GetLevel() Level {
return logger.Level
}
// GetStacktraceLevel returns the stacktrace logging level for this logger
func (logger *WriterLogger) GetStacktraceLevel() Level {
return logger.StacktraceLevel
}
// Copy of cheap integer to fixed-width decimal to ascii from logger.
func itoa(buf *[]byte, i, wid int) {
var logger [20]byte
bp := len(logger) - 1
for i >= 10 || wid > 1 {
wid--
q := i / 10
logger[bp] = byte('0' + i - q*10)
bp--
i = q
}
// i < 10
logger[bp] = byte('0' + i)
*buf = append(*buf, logger[bp:]...)
}
func (logger *WriterLogger) createMsg(buf *[]byte, event *Event) {
*buf = append(*buf, logger.Prefix...)
t := event.time
if logger.Flags&(Ldate|Ltime|Lmicroseconds) != 0 {
if logger.Colorize {
*buf = append(*buf, fgCyanBytes...)
}
if logger.Flags&LUTC != 0 {
t = t.UTC()
}
if logger.Flags&Ldate != 0 {
year, month, day := t.Date()
itoa(buf, year, 4)
*buf = append(*buf, '/')
itoa(buf, int(month), 2)
*buf = append(*buf, '/')
itoa(buf, day, 2)
*buf = append(*buf, ' ')
}
if logger.Flags&(Ltime|Lmicroseconds) != 0 {
hour, min, sec := t.Clock()
itoa(buf, hour, 2)
*buf = append(*buf, ':')
itoa(buf, min, 2)
*buf = append(*buf, ':')
itoa(buf, sec, 2)
if logger.Flags&Lmicroseconds != 0 {
*buf = append(*buf, '.')
itoa(buf, t.Nanosecond()/1e3, 6)
}
*buf = append(*buf, ' ')
}
if logger.Colorize {
*buf = append(*buf, resetBytes...)
}
}
if logger.Flags&(Lshortfile|Llongfile) != 0 {
if logger.Colorize {
*buf = append(*buf, fgGreenBytes...)
}
file := event.filename
if logger.Flags&Lmedfile == Lmedfile {
startIndex := len(file) - 20
if startIndex > 0 {
file = "..." + file[startIndex:]
}
} else if logger.Flags&Lshortfile != 0 {
startIndex := strings.LastIndexByte(file, '/')
if startIndex > 0 && startIndex < len(file) {
file = file[startIndex+1:]
}
}
*buf = append(*buf, file...)
*buf = append(*buf, ':')
itoa(buf, event.line, -1)
if logger.Flags&(Lfuncname|Lshortfuncname) != 0 {
*buf = append(*buf, ':')
} else {
if logger.Colorize {
*buf = append(*buf, resetBytes...)
}
*buf = append(*buf, ' ')
}
}
if logger.Flags&(Lfuncname|Lshortfuncname) != 0 {
if logger.Colorize {
*buf = append(*buf, fgGreenBytes...)
}
funcname := event.caller
if logger.Flags&Lshortfuncname != 0 {
lastIndex := strings.LastIndexByte(funcname, '.')
if lastIndex > 0 && len(funcname) > lastIndex+1 {
funcname = funcname[lastIndex+1:]
}
}
*buf = append(*buf, funcname...)
if logger.Colorize {
*buf = append(*buf, resetBytes...)
}
*buf = append(*buf, ' ')
}
if logger.Flags&(Llevel|Llevelinitial) != 0 {
level := strings.ToUpper(event.level.String())
if logger.Colorize {
*buf = append(*buf, levelToColor[event.level]...)
}
*buf = append(*buf, '[')
if logger.Flags&Llevelinitial != 0 {
*buf = append(*buf, level[0])
} else {
*buf = append(*buf, level...)
}
*buf = append(*buf, ']')
if logger.Colorize {
*buf = append(*buf, resetBytes...)
}
*buf = append(*buf, ' ')
}
msg := []byte(event.msg)
if len(msg) > 0 && msg[len(msg)-1] == '\n' {
msg = msg[:len(msg)-1]
}
pawMode := allowColor
if !logger.Colorize {
pawMode = removeColor
}
baw := byteArrayWriter(*buf)
(&protectedANSIWriter{
w: &baw,
mode: pawMode,
}).Write(msg)
*buf = baw
if event.stacktrace != "" && logger.StacktraceLevel <= event.level {
lines := bytes.Split([]byte(event.stacktrace), []byte("\n"))
if len(lines) > 1 {
for _, line := range lines {
*buf = append(*buf, "\n\t"...)
*buf = append(*buf, line...)
}
}
*buf = append(*buf, '\n')
}
*buf = append(*buf, '\n')
}
// LogEvent logs the event to the internal writer
func (logger *WriterLogger) LogEvent(event *Event) error {
if logger.Level > event.level {
return nil
}
logger.mu.Lock()
defer logger.mu.Unlock()
if !logger.Match(event) {
return nil
}
var buf []byte
logger.createMsg(&buf, event)
_, err := logger.out.Write(buf)
return err
}
// Match checks if the given event matches the logger's regexp expression
func (logger *WriterLogger) Match(event *Event) bool {
if logger.regexp == nil {
return true
}
if logger.regexp.Match([]byte(fmt.Sprintf("%s:%d:%s", event.filename, event.line, event.caller))) {
return true
}
// Match on the non-colored msg - therefore strip out colors
var msg []byte
baw := byteArrayWriter(msg)
(&protectedANSIWriter{
w: &baw,
mode: removeColor,
}).Write([]byte(event.msg))
msg = baw
return logger.regexp.Match(msg)
}
// Close the base logger
func (logger *WriterLogger) Close() {
logger.mu.Lock()
defer logger.mu.Unlock()
if logger.out != nil {
logger.out.Close()
}
}
// GetName returns empty for these provider loggers
func (logger *WriterLogger) GetName() string {
return ""
}
|
