466 lines
12 KiB
Go
466 lines
12 KiB
Go
package encoder
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import (
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"encoding/base64"
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"encoding/json"
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"fmt"
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"math"
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"sync"
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"time"
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"unicode/utf8"
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"github.com/ehlxr/log/bufferpool"
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"go.uber.org/zap/buffer"
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"go.uber.org/zap/zapcore"
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)
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const _hex = "0123456789abcdef"
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var (
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_arrayEncoderPool = sync.Pool{
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New: func() interface{} {
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return &arrayEncoder{elems: make([]interface{}, 0, 2)}
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}}
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_textPool = sync.Pool{New: func() interface{} {
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return &textEncoder{}
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}}
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)
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func getTextEncoder() *textEncoder {
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return _textPool.Get().(*textEncoder)
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}
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func getSliceEncoder() *arrayEncoder {
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return _arrayEncoderPool.Get().(*arrayEncoder)
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}
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func putSliceEncoder(e *arrayEncoder) {
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e.elems = e.elems[:0]
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_arrayEncoderPool.Put(e)
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}
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type textEncoder struct {
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*zapcore.EncoderConfig
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buf *buffer.Buffer
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spaced bool // include spaces after colons and commas
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openNamespaces int
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// for encoding generic values by reflection
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reflectBuf *buffer.Buffer
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reflectEnc *json.Encoder
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}
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func NewTextEncoder(cfg zapcore.EncoderConfig) zapcore.Encoder {
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return &textEncoder{
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EncoderConfig: &cfg,
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buf: bufferpool.Get(),
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spaced: true,
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}
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}
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func (enc textEncoder) EncodeEntry(ent zapcore.Entry, fields []zapcore.Field) (*buffer.Buffer, error) {
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line := bufferpool.Get()
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// If this ever becomes a performance bottleneck, we can implement
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// ArrayEncoder for our plain-text format.
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arr := getSliceEncoder()
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if enc.TimeKey != "" && enc.EncodeTime != nil {
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enc.EncodeTime(ent.Time, arr)
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}
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if enc.LevelKey != "" && enc.EncodeLevel != nil {
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enc.EncodeLevel(ent.Level, arr)
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}
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if ent.LoggerName != "" && enc.NameKey != "" {
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nameEncoder := enc.EncodeName
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if nameEncoder == nil {
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// Fall back to FullNameEncoder for backward compatibility.
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nameEncoder = zapcore.FullNameEncoder
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}
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nameEncoder(ent.LoggerName, arr)
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}
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if ent.Caller.Defined && enc.CallerKey != "" && enc.EncodeCaller != nil {
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enc.EncodeCaller(ent.Caller, arr)
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}
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for i := range arr.elems {
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// if i > 0 {
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// line.AppendByte('\t')
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// }
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_, _ = fmt.Fprint(line, arr.elems[i])
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}
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putSliceEncoder(arr)
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// Add any structured context.
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enc.writeContext(line, fields)
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// Add the message itself.
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if enc.MessageKey != "" {
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// c.addTabIfNecessary(line)
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line.AppendString(" - ")
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line.AppendString(ent.Message)
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}
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// If there's no stacktrace key, honor that; this allows users to force
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// single-line output.
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if ent.Stack != "" && enc.StacktraceKey != "" {
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line.AppendByte('\n')
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line.AppendString(ent.Stack)
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}
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if enc.LineEnding != "" {
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line.AppendString(enc.LineEnding)
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} else {
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line.AppendString(zapcore.DefaultLineEnding)
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}
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return line, nil
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}
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func (enc textEncoder) writeContext(line *buffer.Buffer, extra []zapcore.Field) {
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context := enc.Clone().(*textEncoder)
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defer context.buf.Free()
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addFields(context, extra)
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// context.closeOpenNamespaces()
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if context.buf.Len() == 0 {
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return
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}
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// c.addTabIfNecessary(line)
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// line.AppendByte('{')
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line.AppendByte(' ')
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_, _ = line.Write(context.buf.Bytes())
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// line.AppendByte('}')
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}
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func (enc textEncoder) addTabIfNecessary(line *buffer.Buffer) {
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if line.Len() > 0 {
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line.AppendByte('\t')
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}
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}
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func (enc *textEncoder) resetReflectBuf() {
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if enc.reflectBuf == nil {
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enc.reflectBuf = bufferpool.Get()
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enc.reflectEnc = json.NewEncoder(enc.reflectBuf)
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// For consistency with our custom JSON encoder.
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enc.reflectEnc.SetEscapeHTML(false)
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} else {
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enc.reflectBuf.Reset()
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}
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}
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func (enc *textEncoder) AddArray(key string, arr zapcore.ArrayMarshaler) error {
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enc.addKey(key)
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enc.addElementSeparator()
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enc.buf.AppendByte('[')
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// TODO:
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// err := arr.MarshalLogArray(enc)
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enc.buf.AppendByte(']')
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// return err
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return nil
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}
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func (enc *textEncoder) AddObject(key string, obj zapcore.ObjectMarshaler) error {
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enc.addKey(key)
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enc.addElementSeparator()
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enc.buf.AppendByte('{')
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err := obj.MarshalLogObject(enc)
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enc.buf.AppendByte('}')
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return err
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}
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func (enc *textEncoder) AddBinary(key string, val []byte) {
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enc.AddString(key, base64.StdEncoding.EncodeToString(val))
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}
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func (enc *textEncoder) AddByteString(key string, val []byte) {
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enc.addKey(key)
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enc.addElementSeparator()
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enc.buf.AppendByte('"')
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enc.safeAddByteString(val)
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enc.buf.AppendByte('"')
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}
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func (enc *textEncoder) AddBool(key string, val bool) {
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enc.addKey(key)
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enc.addElementSeparator()
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enc.buf.AppendBool(val)
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}
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//noinspection GoRedundantConversion
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func (enc *textEncoder) AddComplex128(key string, val complex128) {
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enc.addKey(key)
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enc.addElementSeparator()
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// Cast to a platform-independent, fixed-size type.
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r, i := float64(real(val)), float64(imag(val))
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enc.buf.AppendByte('"')
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// Because we're always in a quoted string, we can use strconv without
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// special-casing NaN and +/-Inf.
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enc.buf.AppendFloat(r, 64)
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enc.buf.AppendByte('+')
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enc.buf.AppendFloat(i, 64)
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enc.buf.AppendByte('i')
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enc.buf.AppendByte('"')
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}
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func (enc *textEncoder) AddDuration(key string, val time.Duration) {
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enc.addKey(key)
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cur := enc.buf.Len()
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// TODO:
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// enc.EncodeDuration(val, enc)
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if cur == enc.buf.Len() {
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// User-supplied EncodeDuration is a no-op. Fall back to nanoseconds to keep
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// JSON valid.
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enc.addElementSeparator()
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enc.buf.AppendInt(int64(val))
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}
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}
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func (enc *textEncoder) AddFloat64(key string, val float64) {
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enc.addKey(key)
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enc.appendFloat(val, 64)
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enc.buf.AppendByte(']')
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}
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func (enc *textEncoder) AddInt64(key string, val int64) {
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enc.addKey(key)
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enc.addElementSeparator()
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enc.buf.AppendInt(val)
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enc.buf.AppendByte(']')
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}
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func (enc *textEncoder) AddReflected(key string, obj interface{}) error {
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enc.resetReflectBuf()
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err := enc.reflectEnc.Encode(obj)
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if err != nil {
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return err
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}
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enc.reflectBuf.TrimNewline()
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enc.addKey(key)
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_, err = enc.buf.Write(enc.reflectBuf.Bytes())
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return err
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}
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func (enc *textEncoder) OpenNamespace(key string) {
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enc.addKey(key)
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enc.buf.AppendByte('{')
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enc.openNamespaces++
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}
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func (enc *textEncoder) AddString(key, val string) {
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enc.addKey(key)
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enc.addElementSeparator()
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// enc.buf.AppendByte('"')
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enc.safeAddString(val)
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// enc.buf.AppendByte('"')
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enc.buf.AppendByte(']')
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}
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func (enc *textEncoder) AddTime(key string, val time.Time) {
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enc.addKey(key)
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cur := enc.buf.Len()
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// TODO:
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// enc.EncodeTime(val, enc)
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if cur == enc.buf.Len() {
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// User-supplied EncodeTime is a no-op. Fall back to nanos since epoch to keep
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// output JSON valid.
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enc.addElementSeparator()
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enc.buf.AppendInt(val.UnixNano())
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}
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}
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func (enc *textEncoder) AddUint64(key string, val uint64) {
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enc.addKey(key)
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enc.addElementSeparator()
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enc.buf.AppendUint(val)
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enc.buf.AppendByte(']')
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}
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//noinspection GoRedundantConversion
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func (enc *textEncoder) AddComplex64(k string, v complex64) { enc.AddComplex128(k, complex128(v)) }
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func (enc *textEncoder) AddFloat32(k string, v float32) { enc.AddFloat64(k, float64(v)) }
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func (enc *textEncoder) AddInt(k string, v int) { enc.AddInt64(k, int64(v)) }
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func (enc *textEncoder) AddInt32(k string, v int32) { enc.AddInt64(k, int64(v)) }
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func (enc *textEncoder) AddInt16(k string, v int16) { enc.AddInt64(k, int64(v)) }
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func (enc *textEncoder) AddInt8(k string, v int8) { enc.AddInt64(k, int64(v)) }
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func (enc *textEncoder) AddUint(k string, v uint) { enc.AddUint64(k, uint64(v)) }
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func (enc *textEncoder) AddUint32(k string, v uint32) { enc.AddUint64(k, uint64(v)) }
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func (enc *textEncoder) AddUint16(k string, v uint16) { enc.AddUint64(k, uint64(v)) }
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func (enc *textEncoder) AddUint8(k string, v uint8) { enc.AddUint64(k, uint64(v)) }
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func (enc *textEncoder) AddUintptr(k string, v uintptr) { enc.AddUint64(k, uint64(v)) }
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func (enc *textEncoder) Clone() zapcore.Encoder {
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clone := enc.clone()
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_, _ = clone.buf.Write(enc.buf.Bytes())
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return clone
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}
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func (enc *textEncoder) clone() *textEncoder {
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clone := getTextEncoder()
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clone.EncoderConfig = enc.EncoderConfig
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clone.spaced = enc.spaced
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clone.openNamespaces = enc.openNamespaces
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clone.buf = bufferpool.Get()
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return clone
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}
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func (enc *textEncoder) addKey(key string) {
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enc.addElementSeparator()
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// enc.buf.AppendByte('"')
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enc.buf.AppendByte('[')
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enc.safeAddString(key)
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// enc.buf.AppendByte('"')
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enc.buf.AppendByte(':')
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if enc.spaced {
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enc.buf.AppendByte(' ')
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}
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}
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func (enc *textEncoder) addElementSeparator() {
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last := enc.buf.Len() - 1
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if last < 0 {
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return
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}
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switch enc.buf.Bytes()[last] {
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case '{', '[', ':', ',', ' ':
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return
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default:
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enc.buf.AppendByte(',')
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if enc.spaced {
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enc.buf.AppendByte(' ')
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}
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}
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}
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func (enc *textEncoder) appendFloat(val float64, bitSize int) {
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enc.addElementSeparator()
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switch {
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case math.IsNaN(val):
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enc.buf.AppendString(`"NaN"`)
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case math.IsInf(val, 1):
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enc.buf.AppendString(`"+Inf"`)
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case math.IsInf(val, -1):
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enc.buf.AppendString(`"-Inf"`)
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default:
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enc.buf.AppendFloat(val, bitSize)
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}
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}
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func (enc *textEncoder) safeAddString(s string) {
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for i := 0; i < len(s); {
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if enc.tryAddRuneSelf(s[i]) {
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i++
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continue
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}
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r, size := utf8.DecodeRuneInString(s[i:])
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if enc.tryAddRuneError(r, size) {
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i++
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continue
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}
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enc.buf.AppendString(s[i : i+size])
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i += size
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}
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}
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func (enc *textEncoder) safeAddByteString(s []byte) {
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for i := 0; i < len(s); {
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if enc.tryAddRuneSelf(s[i]) {
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i++
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continue
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}
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r, size := utf8.DecodeRune(s[i:])
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if enc.tryAddRuneError(r, size) {
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i++
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continue
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}
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_, _ = enc.buf.Write(s[i : i+size])
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i += size
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}
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}
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func (enc *textEncoder) tryAddRuneSelf(b byte) bool {
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if b >= utf8.RuneSelf {
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return false
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}
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if 0x20 <= b && b != '\\' && b != '"' {
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enc.buf.AppendByte(b)
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return true
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}
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switch b {
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case '\\', '"':
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enc.buf.AppendByte('\\')
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enc.buf.AppendByte(b)
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case '\n':
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enc.buf.AppendByte('\\')
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enc.buf.AppendByte('n')
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case '\r':
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enc.buf.AppendByte('\\')
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enc.buf.AppendByte('r')
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case '\t':
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enc.buf.AppendByte('\\')
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enc.buf.AppendByte('t')
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default:
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// Encode bytes < 0x20, except for the escape sequences above.
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enc.buf.AppendString(`\u00`)
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enc.buf.AppendByte(_hex[b>>4])
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enc.buf.AppendByte(_hex[b&0xF])
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}
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return true
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}
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func (enc *textEncoder) tryAddRuneError(r rune, size int) bool {
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if r == utf8.RuneError && size == 1 {
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enc.buf.AppendString(`\ufffd`)
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return true
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}
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return false
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}
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func addFields(enc zapcore.ObjectEncoder, fields []zapcore.Field) {
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for i := range fields {
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fields[i].AddTo(enc)
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}
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}
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type arrayEncoder struct {
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elems []interface{}
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}
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func (s *arrayEncoder) AppendArray(v zapcore.ArrayMarshaler) error {
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enc := &arrayEncoder{}
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err := v.MarshalLogArray(enc)
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s.elems = append(s.elems, enc.elems)
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return err
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}
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func (s *arrayEncoder) AppendObject(v zapcore.ObjectMarshaler) error {
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m := zapcore.NewMapObjectEncoder()
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err := v.MarshalLogObject(m)
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s.elems = append(s.elems, m.Fields)
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return err
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}
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func (s *arrayEncoder) AppendReflected(v interface{}) error {
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s.elems = append(s.elems, v)
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return nil
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}
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func (s *arrayEncoder) AppendBool(v bool) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendByteString(v []byte) { s.elems = append(s.elems, string(v)) }
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func (s *arrayEncoder) AppendComplex128(v complex128) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendComplex64(v complex64) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendDuration(v time.Duration) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendFloat64(v float64) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendFloat32(v float32) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendInt(v int) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendInt64(v int64) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendInt32(v int32) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendInt16(v int16) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendInt8(v int8) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendString(v string) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendTime(v time.Time) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendUint(v uint) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendUint64(v uint64) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendUint32(v uint32) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendUint16(v uint16) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendUint8(v uint8) { s.elems = append(s.elems, v) }
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func (s *arrayEncoder) AppendUintptr(v uintptr) { s.elems = append(s.elems, v) }
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