130 lines
2.3 KiB
Go
130 lines
2.3 KiB
Go
package sarama
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import (
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"encoding/binary"
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"github.com/rcrowley/go-metrics"
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)
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type realEncoder struct {
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raw []byte
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off int
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stack []pushEncoder
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registry metrics.Registry
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}
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// primitives
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func (re *realEncoder) putInt8(in int8) {
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re.raw[re.off] = byte(in)
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re.off++
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}
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func (re *realEncoder) putInt16(in int16) {
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binary.BigEndian.PutUint16(re.raw[re.off:], uint16(in))
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re.off += 2
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}
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func (re *realEncoder) putInt32(in int32) {
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binary.BigEndian.PutUint32(re.raw[re.off:], uint32(in))
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re.off += 4
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}
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func (re *realEncoder) putInt64(in int64) {
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binary.BigEndian.PutUint64(re.raw[re.off:], uint64(in))
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re.off += 8
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}
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func (re *realEncoder) putArrayLength(in int) error {
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re.putInt32(int32(in))
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return nil
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}
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// collection
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func (re *realEncoder) putRawBytes(in []byte) error {
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copy(re.raw[re.off:], in)
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re.off += len(in)
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return nil
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}
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func (re *realEncoder) putBytes(in []byte) error {
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if in == nil {
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re.putInt32(-1)
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return nil
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}
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re.putInt32(int32(len(in)))
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copy(re.raw[re.off:], in)
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re.off += len(in)
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return nil
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}
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func (re *realEncoder) putString(in string) error {
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re.putInt16(int16(len(in)))
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copy(re.raw[re.off:], in)
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re.off += len(in)
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return nil
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}
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func (re *realEncoder) putStringArray(in []string) error {
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err := re.putArrayLength(len(in))
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if err != nil {
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return err
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}
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for _, val := range in {
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if err := re.putString(val); err != nil {
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return err
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}
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}
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return nil
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}
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func (re *realEncoder) putInt32Array(in []int32) error {
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err := re.putArrayLength(len(in))
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if err != nil {
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return err
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}
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for _, val := range in {
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re.putInt32(val)
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}
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return nil
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}
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func (re *realEncoder) putInt64Array(in []int64) error {
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err := re.putArrayLength(len(in))
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if err != nil {
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return err
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}
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for _, val := range in {
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re.putInt64(val)
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}
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return nil
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}
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func (re *realEncoder) offset() int {
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return re.off
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}
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// stacks
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func (re *realEncoder) push(in pushEncoder) {
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in.saveOffset(re.off)
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re.off += in.reserveLength()
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re.stack = append(re.stack, in)
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}
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func (re *realEncoder) pop() error {
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// this is go's ugly pop pattern (the inverse of append)
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in := re.stack[len(re.stack)-1]
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re.stack = re.stack[:len(re.stack)-1]
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return in.run(re.off, re.raw)
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}
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// we do record metrics during the real encoder pass
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func (re *realEncoder) metricRegistry() metrics.Registry {
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return re.registry
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}
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