/
keyvalue.go
65 lines (58 loc) · 1.26 KB
/
keyvalue.go
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package input
import (
"github.com/in4it/gomap/pkg/utils"
"github.com/in4it/gomap/pkg/writers"
)
type KeyValue struct {
bufferKey writers.WriterReader
bufferValue writers.WriterReader
keyRecordSize uint32
keyRecordErr error
valueRecordSize uint32
valueRecordErr error
keyRecord []byte
valueRecord []byte
}
func NewKeyValue(key, value writers.WriterReader) Input {
return &KeyValue{
bufferKey: key,
bufferValue: value,
}
}
func (i *KeyValue) Init() error {
return nil
}
func (i *KeyValue) Close() {
i.bufferKey.Cleanup()
i.bufferValue.Cleanup()
}
func (i *KeyValue) Scan() bool {
return i.readRecordFromKey() && i.readRecordFromValue()
}
func (i *KeyValue) Bytes() ([]byte, []byte) {
return i.keyRecord, i.valueRecord
}
func (i *KeyValue) Err() (error, error) {
return i.keyRecordErr, i.valueRecordErr
}
func (i *KeyValue) readRecordFromKey() bool {
var ret bool
var err error
ret, i.keyRecord, err = utils.ReadRecord(i.bufferKey)
if err != nil {
i.keyRecordErr = err
}
return ret
}
func (i *KeyValue) readRecordFromValue() bool {
var ret bool
var err error
ret, i.valueRecord, err = utils.ReadRecord(i.bufferValue)
if err != nil {
i.valueRecordErr = err
}
return ret
}
func (i *KeyValue) GetType() string {
return "kv"
}