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[#230] metabase: Index split info structures

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Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2020-12-02 16:21:45 +03:00
parent eaae5a5dd7
commit e2de95e3f6
3 changed files with 124 additions and 10 deletions
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2
go.mod
View file

@ -17,7 +17,7 @@ require (
github.com/multiformats/go-multihash v0.0.13 // indirect
github.com/nspcc-dev/hrw v1.0.9
github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b
github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201201103311-576841e0e091
github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201203150742-6db6b569e098
github.com/nspcc-dev/neofs-crypto v0.3.0
github.com/nspcc-dev/tzhash v1.4.0
github.com/panjf2000/ants/v2 v2.3.0

4
go.sum
View file

@ -280,8 +280,8 @@ github.com/nspcc-dev/neo-go v0.73.1-pre.0.20200303142215-f5a1b928ce09/go.mod h1:
github.com/nspcc-dev/neo-go v0.91.0/go.mod h1:G6HdOWvzQ6tlvFdvFSN/PgCzLPN/X/X4d5hTjFRUDcc=
github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b h1:gk5bZgpWOehaDVKI5vBDkcjXTpRkKqcvIb1h/vHnBH4=
github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b/go.mod h1:9s7LNp2lMgf0caH2t0sam4+WT2SIauXozwP0AdBqnEo=
github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201201103311-576841e0e091 h1:Cx7yRBuQj9490SpXiHO199On8jQjJh9v6YonRmXo+us=
github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201201103311-576841e0e091/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201203150742-6db6b569e098 h1:lq17L0qNacW4cdJ4SqcnTmei2g/wg+36nkobznI7YAo=
github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201203150742-6db6b569e098/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
github.com/nspcc-dev/neofs-crypto v0.2.3/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
github.com/nspcc-dev/neofs-crypto v0.3.0 h1:zlr3pgoxuzrmGCxc5W8dGVfA9Rro8diFvVnBg0L4ifM=

128
pkg/local_object_storage/metabase/v2/put.go
View file

@ -21,17 +21,21 @@ type (
var (
ErrUnknownObjectType = errors.New("unknown object type")
ErrIncorrectBlobovniczaUpdate = errors.New("updating blobovnicza id on object without it")
ErrIncorrectSplitInfoUpdate = errors.New("updating split info on object without it")
ErrIncorrectRootObject = errors.New("invalid root object")
)
// Put saves object header in metabase. Object payload expected to be cut.
// Big objects have nil blobovniczaID.
func (db *DB) Put(obj *object.Object, id *blobovnicza.ID) error {
return db.boltDB.Update(func(tx *bbolt.Tx) error {
return db.put(tx, obj, id, false)
return db.put(tx, obj, id, nil)
})
}
func (db *DB) put(tx *bbolt.Tx, obj *object.Object, id *blobovnicza.ID, isParent bool) error {
func (db *DB) put(tx *bbolt.Tx, obj *object.Object, id *blobovnicza.ID, si *objectSDK.SplitInfo) error {
isParent := si != nil
exists, err := db.exists(tx, obj.Address())
if err != nil {
return err
@ -42,22 +46,35 @@ func (db *DB) put(tx *bbolt.Tx, obj *object.Object, id *blobovnicza.ID, isParent
if exists {
// when storage engine moves small objects from one blobovniczaID
// to another, then it calls metabase.Put method with new blobovniczaID
// and this code should be triggered.
// and this code should be triggered
if !isParent && id != nil {
return updateBlobovniczaID(tx, obj.Address(), id)
}
// when storage already has last object in split hierarchy and there is
// a linking object to put (or vice versa), we should update split info
// with object ids of these objects
if isParent {
return updateSplitInfo(tx, obj.Address(), si)
}
return nil
}
if obj.GetParent() != nil && !isParent { // limit depth by two
err = db.put(tx, obj.GetParent(), id, true)
parentSI, err := splitInfoFromObject(obj)
if err != nil {
return err
}
err = db.put(tx, obj.GetParent(), id, parentSI)
if err != nil {
return err
}
}
uniqueIndexes, err := uniqueIndexes(obj, isParent, id)
// build unique indexes
uniqueIndexes, err := uniqueIndexes(obj, si, id)
if err != nil {
return fmt.Errorf("can' build unique indexes: %w", err)
}
@ -102,7 +119,8 @@ func (db *DB) put(tx *bbolt.Tx, obj *object.Object, id *blobovnicza.ID, isParent
}
// builds list of <unique> indexes from the object.
func uniqueIndexes(obj *object.Object, isParent bool, id *blobovnicza.ID) ([]namedBucketItem, error) {
func uniqueIndexes(obj *object.Object, si *objectSDK.SplitInfo, id *blobovnicza.ID) ([]namedBucketItem, error) {
isParent := si != nil
addr := obj.Address()
objKey := objectKey(addr.ObjectID())
result := make([]namedBucketItem, 0, 3)
@ -145,10 +163,22 @@ func uniqueIndexes(obj *object.Object, isParent bool, id *blobovnicza.ID) ([]nam
// index root object
if obj.Type() == objectSDK.TypeRegular && !obj.HasParent() {
var (
err error
splitInfo []byte
)
if isParent {
splitInfo, err = si.Marshal()
if err != nil {
return nil, fmt.Errorf("can't marshal split info: %w", err)
}
}
result = append(result, namedBucketItem{
name: rootBucketName(addr.ContainerID()),
key: objKey,
val: zeroValue, // todo: store split.Info when it will be ready
val: splitInfo,
})
}
@ -305,3 +335,87 @@ func updateBlobovniczaID(tx *bbolt.Tx, addr *objectSDK.Address, id *blobovnicza.
return bkt.Put(objectKey, *id)
}
// updateSpliInfo for existing objects if storage filled with extra information
// about last object in split hierarchy or linking object.
func updateSplitInfo(tx *bbolt.Tx, addr *objectSDK.Address, from *objectSDK.SplitInfo) error {
bkt := tx.Bucket(rootBucketName(addr.ContainerID()))
if bkt == nil {
// if object doesn't exists and we want to update split info on it
// then ignore, this should never happen
return ErrIncorrectSplitInfoUpdate
}
objectKey := objectKey(addr.ObjectID())
rawSplitInfo := bkt.Get(objectKey)
if len(rawSplitInfo) == 0 {
return ErrIncorrectSplitInfoUpdate
}
to := objectSDK.NewSplitInfo()
err := to.Unmarshal(rawSplitInfo)
if err != nil {
return fmt.Errorf("can't unmarshal split info from root index: %w", err)
}
result := mergeSplitInfo(from, to)
rawSplitInfo, err = result.Marshal()
if err != nil {
return fmt.Errorf("can't marhsal merged split info: %w", err)
}
return bkt.Put(objectKey, rawSplitInfo)
}
// splitInfoFromObject returns split info based on last or linkin object.
// Otherwise returns nil, nil.
func splitInfoFromObject(obj *object.Object) (*objectSDK.SplitInfo, error) {
if obj.Parent() == nil {
return nil, nil
}
info := objectSDK.NewSplitInfo()
info.SetSplitID(obj.SplitID())
switch {
case isLinkObject(obj):
info.SetLink(obj.ID())
case isLastObject(obj):
info.SetLastPart(obj.ID())
default:
return nil, ErrIncorrectRootObject // should never happen
}
return info, nil
}
// mergeSplitInfo ignores conflicts and rewrites `to` with non empty values
// from `from`.
func mergeSplitInfo(from, to *objectSDK.SplitInfo) *objectSDK.SplitInfo {
to.SetSplitID(from.SplitID()) // overwrite SplitID and ignore conflicts
if lp := from.LastPart(); lp != nil {
to.SetLastPart(lp)
}
if link := from.Link(); link != nil {
to.SetLink(link)
}
return to
}
// isLinkObject returns true if object contains parent header and list
// of children.
func isLinkObject(obj *object.Object) bool {
return len(obj.Children()) > 0 && obj.Parent() != nil
}
// isLastObject returns true if object contains only parent header without list
// of children.
func isLastObject(obj *object.Object) bool {
return len(obj.Children()) == 0 && obj.Parent() != nil
}