ledisdb/wal/wal.go

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2014-09-15 18:42:25 +04:00
package wal
import (
"errors"
)
const (
InvalidLogID uint64 = 0
)
var (
ErrLogNotFound = errors.New("log not found")
ErrLessLogID = errors.New("log id is less")
)
type Store interface {
GetLog(id uint64, log *Log) error
// Get the first log which ID is equal or larger than id
SeekLog(id uint64, log *Log) error
FirstID() (uint64, error)
LastID() (uint64, error)
// if log id is less than current last id, return error
StoreLog(log *Log) error
StoreLogs(logs []*Log) error
// Delete logs [start, stop]
DeleteRange(start, stop uint64) error
// Clear all logs
Clear() error
Close() error
}