frostfs-node/pkg/local_object_storage/blobovnicza/sizes.go
Dmitrii Stepanov c672f59ab8 [] blobovnicza: Drop cache
Each blobovnicza instance is opened
while is in use.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-09-01 13:51:26 +03:00

60 lines
1.2 KiB
Go

package blobovnicza
import (
"encoding/binary"
"fmt"
"math"
"math/bits"
"strconv"
)
const firstBucketBound = uint64(32 * 1 << 10) // 32KB
func stringifyBounds(lower, upper uint64) string {
return fmt.Sprintf("[%s:%s]",
stringifyByteSize(lower),
stringifyByteSize(upper),
)
}
func stringifyByteSize(sz uint64) string {
return strconv.FormatUint(sz, 10)
}
func bucketKeyFromBounds(upperBound uint64) []byte {
buf := make([]byte, binary.MaxVarintLen64)
ln := binary.PutUvarint(buf, upperBound)
return buf[:ln]
}
func bucketForSize(sz uint64) ([]byte, uint64) {
upperBound := upperPowerOfTwo(sz)
return bucketKeyFromBounds(upperBound), upperBound
}
func upperPowerOfTwo(v uint64) uint64 {
if v <= firstBucketBound {
return firstBucketBound
}
return 1 << bits.Len64(v-1)
}
func (b *Blobovnicza) itemAdded(itemSize uint64) {
b.dataSize.Add(itemSize)
b.itemsCount.Add(1)
b.metrics.AddOpenBlobovniczaSize(itemSize)
b.metrics.AddOpenBlobovniczaItems(1)
}
func (b *Blobovnicza) itemDeleted(itemSize uint64) {
b.dataSize.Add(^(itemSize - 1))
b.itemsCount.Add(math.MaxUint64)
b.metrics.SubOpenBlobovniczaSize(itemSize)
b.metrics.SubOpenBlobovniczaItems(1)
}
func (b *Blobovnicza) IsFull() bool {
return b.dataSize.Load() >= b.fullSizeLimit
}