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//go:build rocksdb
// +build rocksdb
package rocksdb
import (
"time"
gorocksdb "github.com/linxGnu/grocksdb"
"github.com/seaweedfs/seaweedfs/weed/filer"
)
type TTLFilter struct {
skipLevel0 bool
}
func NewTTLFilter() gorocksdb.CompactionFilter {
return &TTLFilter{
skipLevel0: true,
}
}
func (t *TTLFilter) Filter(level int, key, val []byte) (remove bool, newVal []byte) {
// decode could be slow, causing write stall
// level >0 sst can run compaction in parallel
if !t.skipLevel0 || level > 0 {
entry := filer.Entry{}
if err := entry.DecodeAttributesAndChunks(val); err == nil {
if entry.TtlSec > 0 &&
entry.Crtime.Add(time.Duration(entry.TtlSec)*time.Second).Before(time.Now()) {
return true, nil
}
}
}
return false, val
}
func (t *TTLFilter) Name() string {
return "TTLFilter"
}
func (t *TTLFilter) SetIgnoreSnapshots(value bool) {
}
func (t *TTLFilter) Destroy() {
}
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