mirror of https://github.com/ledisdb/ledisdb.git
71 lines
1.1 KiB
Go
71 lines
1.1 KiB
Go
package driver
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import (
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"github.com/siddontang/goleveldb/leveldb"
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)
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type BatchPuter interface {
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BatchPut([]Write) error
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SyncBatchPut([]Write) error
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}
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type Write struct {
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Key []byte
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Value []byte
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}
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type WriteBatch struct {
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d *leveldb.Batch
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wb []Write
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w BatchPuter
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}
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func (wb *WriteBatch) Close() {
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wb.d.Reset()
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wb.wb = wb.wb[0:0]
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}
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func (wb *WriteBatch) Put(key, value []byte) {
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if value == nil {
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value = []byte{}
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}
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wb.wb = append(wb.wb, Write{key, value})
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}
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func (wb *WriteBatch) Delete(key []byte) {
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wb.wb = append(wb.wb, Write{key, nil})
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}
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func (wb *WriteBatch) Commit() error {
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return wb.w.BatchPut(wb.wb)
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}
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func (wb *WriteBatch) SyncCommit() error {
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return wb.w.SyncBatchPut(wb.wb)
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}
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func (wb *WriteBatch) Rollback() error {
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wb.wb = wb.wb[0:0]
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return nil
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}
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func (wb *WriteBatch) Data() []byte {
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wb.d.Reset()
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for _, w := range wb.wb {
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if w.Value == nil {
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wb.d.Delete(w.Key)
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} else {
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wb.d.Put(w.Key, w.Value)
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}
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}
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return wb.d.Dump()
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}
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func NewWriteBatch(puter BatchPuter) *WriteBatch {
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return &WriteBatch{
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&leveldb.Batch{},
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[]Write{},
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puter}
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}
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