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