frostfs-node/pkg/local_object_storage/metabase/expired.go

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package meta
import (
"context"
"errors"
"fmt"
"strconv"
objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"go.etcd.io/bbolt"
)
// FilterExpired return expired items from addresses.
// Address considered expired if metabase does contain information about expiration and
// expiration epoch is less than epoch.
func (db *DB) FilterExpired(ctx context.Context, epoch uint64, addresses []oid.Address) ([]oid.Address, error) {
db.modeMtx.RLock()
defer db.modeMtx.RUnlock()
if db.mode.NoMetabase() {
return nil, ErrDegradedMode
}
result := make([]oid.Address, 0, len(addresses))
containerIDToObjectIDs := make(map[cid.ID][]oid.ID)
for _, addr := range addresses {
containerIDToObjectIDs[addr.Container()] = append(containerIDToObjectIDs[addr.Container()], addr.Object())
}
err := db.boltDB.View(func(tx *bbolt.Tx) error {
for containerID, objectIDs := range containerIDToObjectIDs {
select {
case <-ctx.Done():
return ErrInterruptIterator
default:
}
expiredNeoFS, err := selectExpiredObjectIDs(tx, objectV2.SysAttributeExpEpochNeoFS, epoch, containerID, objectIDs)
if err != nil {
return err
}
expiredSys, err := selectExpiredObjectIDs(tx, objectV2.SysAttributeExpEpoch, epoch, containerID, objectIDs)
if err != nil {
return err
}
for _, o := range expiredNeoFS {
var a oid.Address
a.SetContainer(containerID)
a.SetObject(o)
result = append(result, a)
}
for _, o := range expiredSys {
var a oid.Address
a.SetContainer(containerID)
a.SetObject(o)
result = append(result, a)
}
}
return nil
})
if err != nil {
return nil, err
}
return result, nil
}
func isExpiredWithAttribute(tx *bbolt.Tx, attr string, addr oid.Address, currEpoch uint64) bool {
// bucket with objects that have expiration attr
attrKey := make([]byte, bucketKeySize+len(attr))
expirationBucket := tx.Bucket(attributeBucketName(addr.Container(), attr, attrKey))
if expirationBucket != nil {
// bucket that contains objects that expire in the current epoch
prevEpochBkt := expirationBucket.Bucket([]byte(strconv.FormatUint(currEpoch-1, 10)))
if prevEpochBkt != nil {
rawOID := objectKey(addr.Object(), make([]byte, objectKeySize))
if prevEpochBkt.Get(rawOID) != nil {
return true
}
}
}
return false
}
func selectExpiredObjectIDs(tx *bbolt.Tx, attr string, epoch uint64, containerID cid.ID, objectIDs []oid.ID) ([]oid.ID, error) {
result := make([]oid.ID, 0)
notResolved := make(map[oid.ID]struct{})
for _, oid := range objectIDs {
notResolved[oid] = struct{}{}
}
expiredBuffer := make([]oid.ID, 0)
objectKeyBuffer := make([]byte, objectKeySize)
expirationBucketKey := make([]byte, bucketKeySize+len(attr))
expirationBucket := tx.Bucket(attributeBucketName(containerID, attr, expirationBucketKey))
if expirationBucket == nil {
return result, nil // all not expired
}
err := expirationBucket.ForEach(func(epochExpBucketKey, _ []byte) error {
bucketExpiresAfter, err := strconv.ParseUint(string(epochExpBucketKey), 10, 64)
if err != nil {
return fmt.Errorf("could not parse expiration epoch: %w", err)
} else if bucketExpiresAfter >= epoch {
return nil
}
epochExpirationBucket := expirationBucket.Bucket(epochExpBucketKey)
if epochExpirationBucket == nil {
return nil
}
expiredBuffer = expiredBuffer[:0]
for oid := range notResolved {
key := objectKey(oid, objectKeyBuffer)
if epochExpirationBucket.Get(key) != nil {
expiredBuffer = append(expiredBuffer, oid)
}
}
for _, oid := range expiredBuffer {
delete(notResolved, oid)
result = append(result, oid)
}
if len(notResolved) == 0 {
return errBreakBucketForEach
}
return nil
})
if err != nil && !errors.Is(err, errBreakBucketForEach) {
return nil, err
}
return result, nil
}