/
hclogger.go
361 lines (308 loc) · 8.57 KB
/
hclogger.go
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
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
package logger
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"log"
"reflect"
"strconv"
"strings"
"github.com/hashicorp/go-hclog"
"github.com/rs/zerolog"
)
// HCLogger is a HC logger that uses zerolog
type HCLogger struct {
log *zerolog.Logger
implied []interface{}
name string
}
// NewHCLogger creates a HCLogger
func NewHCLogger(log *zerolog.Logger) hclog.Logger {
hclLogger := log.With().Str("log-source", "hc").Logger()
return &HCLogger{log: &hclLogger}
}
// Emit a message and key/value pairs at a provided log level
func (l *HCLogger) Log(level hclog.Level, msg string, args ...interface{}) {
message := l.formatMesage(msg, args...)
switch level {
case hclog.Trace:
l.log.Trace().Msg(message)
case hclog.Debug:
l.log.Debug().Msg(message)
case hclog.Info:
l.log.Info().Msg(message)
case hclog.Warn:
l.log.Warn().Msg(message)
case hclog.Error:
l.log.Error().Msg(message)
default:
// TODO: Handle hclog.NoLevel
}
}
// Emit a message and key/value pairs at the TRACE level
func (l *HCLogger) Trace(msg string, args ...interface{}) {
l.Log(hclog.Trace, msg, args...)
}
// Emit a message and key/value pairs at the DEBUG level
func (l *HCLogger) Debug(msg string, args ...interface{}) {
l.Log(hclog.Debug, msg, args...)
}
// Emit a message and key/value pairs at the INFO level
func (l *HCLogger) Info(msg string, args ...interface{}) {
l.Log(hclog.Info, msg, args...)
}
// Emit a message and key/value pairs at the WARN level
func (l *HCLogger) Warn(msg string, args ...interface{}) {
l.Log(hclog.Warn, msg, args...)
}
// Emit a message and key/value pairs at the ERROR level
func (l *HCLogger) Error(msg string, args ...interface{}) {
l.Log(hclog.Error, msg, args...)
}
// Indicate if TRACE logs would be emitted. This and the other Is* guards
// are used to elide expensive logging code based on the current level.
func (l *HCLogger) IsTrace() bool {
return l.log.GetLevel() == zerolog.TraceLevel
}
// Indicate if DEBUG logs would be emitted. This and the other Is* guards
func (l *HCLogger) IsDebug() bool {
return l.log.GetLevel() == zerolog.DebugLevel
}
// Indicate if INFO logs would be emitted. This and the other Is* guards
func (l *HCLogger) IsInfo() bool {
return l.log.GetLevel() == zerolog.InfoLevel
}
// Indicate if WARN logs would be emitted. This and the other Is* guards
func (l *HCLogger) IsWarn() bool {
return l.log.GetLevel() == zerolog.WarnLevel
}
// Indicate if ERROR logs would be emitted. This and the other Is* guards
func (l *HCLogger) IsError() bool {
return l.log.GetLevel() == zerolog.ErrorLevel
}
// ImpliedArgs returns With key/value pairs
func (l *HCLogger) ImpliedArgs() []interface{} {
//Not implemented
return l.implied
}
// Creates a sublogger that will always have the given key/value pairs
func (l *HCLogger) With(args ...interface{}) hclog.Logger {
var stringArgs []string
for _, args := range args {
stringArgs = append(stringArgs, args.(string))
}
logger := l.log.With().Strs("log-source", []string(stringArgs)).Logger()
return &HCLogger{
log: &logger,
name: l.name,
implied: args,
}
}
// Returns the Name of the logger
func (l *HCLogger) Name() string {
return l.name
}
// Create a logger that will prepend the name string on the front of all messages.
// If the logger already has a name, the new value will be appended to the current
// name. That way, a major subsystem can use this to decorate all it's own logs
// without losing context.
func (l *HCLogger) Named(name string) hclog.Logger {
logger := l.log.With().Str("log-source", name).Logger()
return &HCLogger{
log: &logger,
name: name,
implied: l.implied,
}
}
// Create a logger that will prepend the name string on the front of all messages.
// This sets the name of the logger to the value directly, unlike Named which honor
// the current name as well.
func (l *HCLogger) ResetNamed(name string) hclog.Logger {
logger := l.log.With().Logger()
return &HCLogger{
log: &logger,
name: name,
implied: l.implied,
}
}
// Updates the level. This should affect all related loggers as well,
// unless they were created with IndependentLevels. If an
// implementation cannot update the level on the fly, it should no-op.
func (l *HCLogger) SetLevel(level hclog.Level) {
//noop
}
// Return a value that conforms to the stdlib log.Logger interface
func (l *HCLogger) StandardLogger(opts *hclog.StandardLoggerOptions) *log.Logger {
return nil
}
// Return a value that conforms to io.Writer, which can be passed into log.SetOutput()
func (l *HCLogger) StandardWriter(opts *hclog.StandardLoggerOptions) io.Writer {
return ioutil.Discard
}
func (l *HCLogger) formatMesage(msg string, args ...interface{}) string {
writer := stringWriter{}
if l.name != "" {
writer.WriteString(l.name)
writer.WriteString(": ")
}
writer.WriteString(msg)
args = append(l.implied, args...)
var stacktrace hclog.CapturedStacktrace
if len(args) > 0 {
if len(args)%2 != 0 {
cs, ok := args[len(args)-1].(hclog.CapturedStacktrace)
if ok {
args = args[:len(args)-1]
stacktrace = cs
} else {
extra := args[len(args)-1]
args = append(args[:len(args)-1], "EXTRA_VALUE_AT_END", extra)
}
}
writer.WriteByte(':')
FOR:
for i := 0; i < len(args); i = i + 2 {
var (
val string
raw bool
)
switch st := args[i+1].(type) {
case string:
val = st
if st == "" {
val = `""`
}
case int:
val = strconv.FormatInt(int64(st), 10)
case int64:
val = strconv.FormatInt(int64(st), 10)
case int32:
val = strconv.FormatInt(int64(st), 10)
case int16:
val = strconv.FormatInt(int64(st), 10)
case int8:
val = strconv.FormatInt(int64(st), 10)
case uint:
val = strconv.FormatUint(uint64(st), 10)
case uint64:
val = strconv.FormatUint(uint64(st), 10)
case uint32:
val = strconv.FormatUint(uint64(st), 10)
case uint16:
val = strconv.FormatUint(uint64(st), 10)
case uint8:
val = strconv.FormatUint(uint64(st), 10)
case hclog.Hex:
val = "0x" + strconv.FormatUint(uint64(st), 16)
case hclog.Octal:
val = "0" + strconv.FormatUint(uint64(st), 8)
case hclog.Binary:
val = "0b" + strconv.FormatUint(uint64(st), 2)
case hclog.CapturedStacktrace:
stacktrace = st
continue FOR
case hclog.Format:
val = fmt.Sprintf(st[0].(string), st[1:]...)
case hclog.Quote:
raw = true
val = strconv.Quote(string(st))
default:
v := reflect.ValueOf(st)
if v.Kind() == reflect.Slice {
val = l.renderSlice(v)
raw = true
} else {
val = fmt.Sprintf("%v", st)
}
}
var key string
switch st := args[i].(type) {
case string:
key = st
default:
key = fmt.Sprintf("%s", st)
}
if strings.Contains(val, "\n") {
writer.WriteString("\n ")
writer.WriteString(key)
writer.WriteString("=\n")
writeIndent(&writer, val, " | ")
writer.WriteString(" ")
} else if !raw && strings.ContainsAny(val, " \t") {
writer.WriteByte(' ')
writer.WriteString(key)
writer.WriteByte('=')
writer.WriteByte('"')
writer.WriteString(val)
writer.WriteByte('"')
} else {
writer.WriteByte(' ')
writer.WriteString(key)
writer.WriteByte('=')
writer.WriteString(val)
}
}
}
if stacktrace != "" {
writer.WriteString(string(stacktrace))
writer.WriteString("\n")
}
return writer.String()
}
func (l HCLogger) renderSlice(v reflect.Value) string {
var buf bytes.Buffer
buf.WriteRune('[')
for i := 0; i < v.Len(); i++ {
if i > 0 {
buf.WriteString(", ")
}
sv := v.Index(i)
var val string
switch sv.Kind() {
case reflect.String:
val = strconv.Quote(sv.String())
case reflect.Int, reflect.Int16, reflect.Int32, reflect.Int64:
val = strconv.FormatInt(sv.Int(), 10)
case reflect.Uint, reflect.Uint16, reflect.Uint32, reflect.Uint64:
val = strconv.FormatUint(sv.Uint(), 10)
default:
val = fmt.Sprintf("%v", sv.Interface())
if strings.ContainsAny(val, " \t\n\r") {
val = strconv.Quote(val)
}
}
buf.WriteString(val)
}
buf.WriteRune(']')
return buf.String()
}
type stringWriter struct {
value string
}
func (w *stringWriter) WriteString(s string) {
w.value = fmt.Sprintf("%s%s", w.value, s)
}
func (w *stringWriter) WriteByte(c byte) {
w.value = fmt.Sprintf("%s%c", w.value, c)
}
func (w *stringWriter) String() string {
return w.value
}
func writeIndent(w *stringWriter, str string, indent string) {
for {
nl := strings.IndexByte(str, "\n"[0])
if nl == -1 {
if str != "" {
w.WriteString(indent)
w.WriteString(str)
w.WriteString("\n")
}
return
}
w.WriteString(indent)
w.WriteString(str[:nl])
w.WriteString("\n")
str = str[nl+1:]
}
}