forked from mirror/ledisdb
53 lines
910 B
Go
53 lines
910 B
Go
package wal
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import (
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"errors"
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"github.com/siddontang/ledisdb/config"
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"path"
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)
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const (
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InvalidLogID uint64 = 0
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)
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var (
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ErrLogNotFound = errors.New("log not found")
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ErrLessLogID = errors.New("log id is less")
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)
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type Store interface {
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GetLog(id uint64, log *Log) error
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// Get the first log which ID is equal or larger than id
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SeekLog(id uint64, log *Log) error
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FirstID() (uint64, error)
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LastID() (uint64, error)
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// if log id is less than current last id, return error
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StoreLog(log *Log) error
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StoreLogs(logs []*Log) error
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// Delete first n logs
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Purge(n uint64) error
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// Delete logs before n seconds
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PurgeExpired(n int) error
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// Clear all logs
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Clear() error
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Close() error
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}
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func NewStore(cfg *config.Config) (Store, error) {
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//now we only support goleveldb
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base := cfg.WAL.Path
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if len(base) == 0 {
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base = path.Join(cfg.DataDir, "wal")
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}
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return NewGoLevelDBStore(base)
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}
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