[#698] blobovnicza: Store counter values

Blobovnicza initialization take a long time because of bucket
Stat() call. So now blobovnicza stores counters in META bucket.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
This commit is contained in:
Dmitrii Stepanov 2023-10-12 15:25:16 +03:00
parent 5e8c08da3e
commit e54dc3dc7c
8 changed files with 152 additions and 7 deletions

View file

@ -548,4 +548,7 @@ const (
BlobovniczatreeCouldNotCheckExistenceInTargetDB = "could not check object existence in target blobovnicza"
BlobovniczatreeCouldNotGetObjectFromSourceDB = "could not get object from source blobovnicza"
BlobovniczatreeCouldNotPutObjectToTargetDB = "could not put object to target blobovnicza"
BlobovniczaSavingCountersToMeta = "saving counters to blobovnicza's meta..."
BlobovniczaSavingCountersToMetaSuccess = "saving counters to blobovnicza's meta completed successfully"
BlobovniczaSavingCountersToMetaFailed = "saving counters to blobovnicza's meta failed"
)

View file

@ -104,7 +104,17 @@ func (b *Blobovnicza) Init() error {
func (b *Blobovnicza) initializeCounters() error {
var size uint64
var items uint64
var sizeExists bool
var itemsCountExists bool
err := b.boltDB.View(func(tx *bbolt.Tx) error {
size, sizeExists = hasDataSize(tx)
items, itemsCountExists = hasItemsCount(tx)
if sizeExists && itemsCountExists {
return nil
}
return b.iterateAllDataBuckets(tx, func(lower, upper uint64, b *bbolt.Bucket) (bool, error) {
keysN := uint64(b.Stats().KeyN)
size += keysN * upper
@ -115,6 +125,20 @@ func (b *Blobovnicza) initializeCounters() error {
if err != nil {
return fmt.Errorf("can't determine DB size: %w", err)
}
if (!sizeExists || !itemsCountExists) && !b.boltOptions.ReadOnly {
b.log.Debug(logs.BlobovniczaSavingCountersToMeta, zap.Uint64("size", size), zap.Uint64("items", items))
if err := b.boltDB.Update(func(tx *bbolt.Tx) error {
if err := saveDataSize(tx, size); err != nil {
return err
}
return saveItemsCount(tx, items)
}); err != nil {
b.log.Debug(logs.BlobovniczaSavingCountersToMetaFailed, zap.Uint64("size", size), zap.Uint64("items", items))
return fmt.Errorf("can't save blobovnicza's size and items count: %w", err)
}
b.log.Debug(logs.BlobovniczaSavingCountersToMetaSuccess, zap.Uint64("size", size), zap.Uint64("items", items))
}
b.dataSize.Store(size)
b.itemsCount.Store(items)
b.metrics.AddOpenBlobovniczaSize(size)

View file

@ -51,7 +51,7 @@ func (b *Blobovnicza) Delete(ctx context.Context, prm DeletePrm) (DeleteRes, err
var dataSize uint64
err := b.boltDB.Update(func(tx *bbolt.Tx) error {
return b.iterateAllDataBuckets(tx, func(lower, upper uint64, buck *bbolt.Bucket) (bool, error) {
err := b.iterateAllDataBuckets(tx, func(lower, upper uint64, buck *bbolt.Bucket) (bool, error) {
objData := buck.Get(addrKey)
if objData == nil {
// object is not in bucket => continue iterating
@ -63,6 +63,21 @@ func (b *Blobovnicza) Delete(ctx context.Context, prm DeletePrm) (DeleteRes, err
found = true
return true, buck.Delete(addrKey)
})
if err != nil {
return err
}
if found {
return updateMeta(tx, func(count, size uint64) (uint64, uint64) {
if count > 0 {
count--
}
if size >= sizeUpperBound {
size -= sizeUpperBound
}
return count, size
})
}
return nil
})
if err == nil && !found {

View file

@ -1,7 +1,6 @@
package blobovnicza
import (
"bytes"
"context"
"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
@ -26,7 +25,7 @@ func (b *Blobovnicza) Exists(ctx context.Context, addr oid.Address) (bool, error
err := b.boltDB.View(func(tx *bbolt.Tx) error {
return tx.ForEach(func(bucketName []byte, buck *bbolt.Bucket) error {
if bytes.Equal(bucketName, incompletedMoveBucketName) {
if isNonDataBucket(bucketName) {
return nil
}
exists = buck.Get(addrKey) != nil

View file

@ -58,7 +58,7 @@ func (b *Blobovnicza) Get(ctx context.Context, prm GetPrm) (GetRes, error) {
if err := b.boltDB.View(func(tx *bbolt.Tx) error {
return tx.ForEach(func(bucketName []byte, buck *bbolt.Bucket) error {
if bytes.Equal(bucketName, incompletedMoveBucketName) {
if isNonDataBucket(bucketName) {
return nil
}

View file

@ -1,7 +1,6 @@
package blobovnicza
import (
"bytes"
"context"
"fmt"
"math"
@ -140,7 +139,7 @@ func (b *Blobovnicza) Iterate(ctx context.Context, prm IteratePrm) (IterateRes,
if err := b.boltDB.View(func(tx *bbolt.Tx) error {
return tx.ForEach(func(bucketName []byte, buck *bbolt.Bucket) error {
if bytes.Equal(bucketName, incompletedMoveBucketName) {
if isNonDataBucket(bucketName) {
return nil
}
return buck.ForEach(func(k, v []byte) error {

View file

@ -0,0 +1,103 @@
package blobovnicza
import (
"bytes"
"encoding/binary"
"go.etcd.io/bbolt"
)
const (
dataSizeAndItemsCountBufLength = 8
)
var (
metaBucketName = []byte("META")
dataSizeKey = []byte("data_size")
itemsCountKey = []byte("items_count")
)
func isNonDataBucket(bucketName []byte) bool {
return bytes.Equal(bucketName, incompletedMoveBucketName) || bytes.Equal(bucketName, metaBucketName)
}
func hasDataSize(tx *bbolt.Tx) (uint64, bool) {
b := tx.Bucket(metaBucketName)
if b == nil {
return 0, false
}
v := b.Get(dataSizeKey)
if v == nil {
return 0, false
}
if len(v) != dataSizeAndItemsCountBufLength {
return 0, false
}
return binary.LittleEndian.Uint64(v), true
}
func hasItemsCount(tx *bbolt.Tx) (uint64, bool) {
b := tx.Bucket(metaBucketName)
if b == nil {
return 0, false
}
v := b.Get(itemsCountKey)
if v == nil {
return 0, false
}
if len(v) != dataSizeAndItemsCountBufLength {
return 0, false
}
return binary.LittleEndian.Uint64(v), true
}
func saveDataSize(tx *bbolt.Tx, size uint64) error {
b, err := tx.CreateBucketIfNotExists(metaBucketName)
if err != nil {
return err
}
buf := make([]byte, dataSizeAndItemsCountBufLength)
binary.LittleEndian.PutUint64(buf, size)
return b.Put(dataSizeKey, buf)
}
func saveItemsCount(tx *bbolt.Tx, count uint64) error {
b, err := tx.CreateBucketIfNotExists(metaBucketName)
if err != nil {
return err
}
buf := make([]byte, dataSizeAndItemsCountBufLength)
binary.LittleEndian.PutUint64(buf, count)
return b.Put(itemsCountKey, buf)
}
func updateMeta(tx *bbolt.Tx, updateValues func(count, size uint64) (uint64, uint64)) error {
b, err := tx.CreateBucketIfNotExists(metaBucketName)
if err != nil {
return err
}
var count uint64
var size uint64
v := b.Get(itemsCountKey)
if v != nil {
count = binary.LittleEndian.Uint64(v)
}
v = b.Get(dataSizeKey)
if v != nil {
size = binary.LittleEndian.Uint64(v)
}
count, size = updateValues(count, size)
buf := make([]byte, dataSizeAndItemsCountBufLength)
binary.LittleEndian.PutUint64(buf, size)
if err := b.Put(dataSizeKey, buf); err != nil {
return err
}
binary.LittleEndian.PutUint64(buf, count)
return b.Put(itemsCountKey, buf)
}

View file

@ -73,7 +73,9 @@ func (b *Blobovnicza) Put(ctx context.Context, prm PutPrm) (PutRes, error) {
return fmt.Errorf("(%T) could not save object in bucket: %w", b, err)
}
return nil
return updateMeta(tx, func(count, size uint64) (uint64, uint64) {
return count + 1, size + upperBound
})
})
if err == nil {
b.itemAdded(upperBound)