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encoder.go
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encoder.go
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package text
import (
"io"
"reflect"
"strconv"
"time"
"github.com/insolar/assured-ledger/ledger-core/log/logcommon"
"github.com/insolar/assured-ledger/ledger-core/vanilla/args"
"github.com/insolar/assured-ledger/ledger-core/log"
"github.com/insolar/assured-ledger/ledger-core/log/adapters/bilog/json"
"github.com/insolar/assured-ledger/ledger-core/log/adapters/bilog/msgencoder"
"github.com/insolar/assured-ledger/ledger-core/log/logfmt"
)
func EncoderManager() msgencoder.EncoderFactory {
return encoderMgr
}
var encoderMgr = encoderManager{}
type encoderManager struct{}
func (m encoderManager) CreateMetricWriter(downstream io.Writer, fieldName string, reportFn logcommon.DurationReportFunc) (io.Writer, error) {
w := &json.MetricTimeWriter{
Writer: downstream,
Eol: []byte(tail),
ReportFn: reportFn,
AppendFn: nil}
if fieldName != "" {
w.AppendFn = func(dst []byte, d time.Duration) []byte {
dst = AppendKey(dst, fieldName)
return json.AppendOptQuotedString(dst, args.DurationFixedLen(d, 7))
}
}
return w, nil
}
func (encoderManager) CreateEncoder(config logfmt.MsgFormatConfig) msgencoder.Encoder {
return textEncoder{config.Sformat, config.Sformatf, config.TimeFmt}
}
var _ msgencoder.Encoder = textEncoder{}
type textEncoder struct {
sformat logfmt.FormatFunc
sformatf logfmt.FormatfFunc
timeFmt string
}
func (p textEncoder) PrepareBuffer(dst []byte, _ string, level log.Level) []byte {
return append(dst, encodeLevel(level)...)
}
func encodeLevel(level log.Level) string {
switch level {
case log.DebugLevel:
return "DBG"
case log.InfoLevel:
return "INF"
case log.WarnLevel:
return "WRN"
case log.ErrorLevel:
return "ERR"
case log.FatalLevel:
return "FTL"
case log.PanicLevel:
return "PNC"
default:
return "UNK"
}
}
const tail = "\n"
func (p textEncoder) FinalizeBuffer(dst []byte, metricTime time.Time) []byte {
return json.AppendMetricTimeMark(append(dst, tail...), metricTime)
}
func AppendKey(dst []byte, key string) []byte {
if len(dst) != 0 {
dst = append(dst, ' ')
}
return append(json.AppendOptQuotedString(dst, key), '=')
}
func (p textEncoder) appendStrf(dst []byte, f string, a ...interface{}) []byte {
return json.AppendOptQuotedString(dst, p.sformatf(f, a...))
}
func (p textEncoder) AppendParts(b []byte, bb [][]byte) []byte {
for _, bi := range bb {
switch {
case len(bi) == 0:
continue
case len(b) != 0:
b = append(b, ' ')
}
b = append(b, bi...)
}
return b
}
func (p textEncoder) AppendIntField(dst []byte, key string, v int64, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return p.appendStrf(dst, fFmt.Fmt, v)
}
return strconv.AppendInt(dst, v, 10)
}
func (p textEncoder) AppendUintField(dst []byte, key string, v uint64, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
switch {
case fFmt.Kind == reflect.Uintptr:
if fFmt.HasFmt {
return p.appendStrf(dst, fFmt.Fmt, uintptr(v))
}
return append(dst, p.sformat(uintptr(v))...)
case fFmt.HasFmt:
return p.appendStrf(dst, fFmt.Fmt, v)
default:
return strconv.AppendUint(dst, v, 10)
}
}
func (p textEncoder) AppendBoolField(dst []byte, key string, v bool, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return p.appendStrf(dst, fFmt.Fmt, v)
}
return strconv.AppendBool(dst, v)
}
func (p textEncoder) AppendFloatField(dst []byte, key string, v float64, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
if fFmt.Kind == reflect.Float32 {
return p.appendStrf(dst, fFmt.Fmt, float32(v))
}
return p.appendStrf(dst, fFmt.Fmt, v)
}
bits := 64
if fFmt.Kind == reflect.Float32 {
bits = 32
}
return json.AppendFloat(dst, v, bits)
}
func (p textEncoder) AppendComplexField(dst []byte, key string, v complex128, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return p.appendStrf(dst, fFmt.Fmt, v)
}
bits := 64
if fFmt.Kind == reflect.Complex64 {
bits = 32
}
dst = append(dst, '(')
dst = json.AppendFloat(dst, real(v), bits)
if imag(v) >= 0 {
dst = append(dst, '+')
}
dst = json.AppendFloat(dst, imag(v), bits)
return append(dst, `i)`...)
}
func (p textEncoder) AppendStrField(dst []byte, key string, v string, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return p.appendStrf(dst, fFmt.Fmt, v)
}
return json.AppendOptQuotedString(dst, v)
}
func (p textEncoder) AppendIntfField(dst []byte, key string, v interface{}, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return p.appendStrf(dst, fFmt.Fmt, v)
}
return json.AppendOptQuotedString(dst, p.sformat(v))
}
func (p textEncoder) AppendRawJSONField(dst []byte, key string, v interface{}, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return append(dst, p.sformatf(fFmt.Fmt, v)...)
}
switch vv := v.(type) {
case string:
return append(dst, vv...)
case []byte:
return append(dst, vv...)
}
return json.AppendMarshalled(dst, v)
}
func (p textEncoder) AppendTimeField(dst []byte, key string, v time.Time, fFmt logfmt.LogFieldFormat) []byte {
dst = AppendKey(dst, key)
if fFmt.HasFmt {
return json.AppendOptQuotedString(dst, v.Format(fFmt.Fmt))
}
return json.AppendOptQuotedString(dst, v.Format(p.timeFmt))
}