[#1365] node: Calculate object homomorphic hash flexibly

Do not calculate and do not write homomorphic hash for containers that were
configured to store objects without hash.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/services/object/put/prm.go

@@ -4,6 +4,7 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/core/client"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
+	containerSDK "github.com/nspcc-dev/neofs-sdk-go/container"
 	"github.com/nspcc-dev/neofs-sdk-go/object"
 )
 
@@ -12,6 +13,8 @@ type PutInitPrm struct {
 
 	hdr *object.Object
 
+	cnr containerSDK.Container
+
 	traverseOpts []placement.Option
 
 	relay func(client.NodeInfo, client.MultiAddressClient) error

pkg/services/object/put/streamer.go

@@ -10,6 +10,7 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/transformer"
+	containerSDK "github.com/nspcc-dev/neofs-sdk-go/container"
 	"github.com/nspcc-dev/neofs-sdk-go/object"
 	"github.com/nspcc-dev/neofs-sdk-go/user"
 )
@@ -119,6 +120,7 @@ func (p *Streamer) initTarget(prm *PutInitPrm) error {
 		unpreparedObject: true,
 		nextTarget: transformer.NewPayloadSizeLimiter(
 			p.maxPayloadSz,
+			containerSDK.IsHomomorphicHashingDisabled(prm.cnr),
 			func() transformer.ObjectTarget {
 				return transformer.NewFormatTarget(&transformer.FormatterParams{
 					Key:          sessionKey,
@@ -148,15 +150,17 @@ func (p *Streamer) preparePrm(prm *PutInitPrm) error {
 	}
 
 	// get container to store the object
-	cnr, err := p.cnrSrc.Get(idCnr)
+	cnrInfo, err := p.cnrSrc.Get(idCnr)
 	if err != nil {
 		return fmt.Errorf("(%T) could not get container by ID: %w", p, err)
 	}
 
+	prm.cnr = cnrInfo.Value
+
 	// add common options
 	prm.traverseOpts = append(prm.traverseOpts,
 		// set processing container
-		placement.ForContainer(cnr.Value),
+		placement.ForContainer(prm.cnr),
 	)
 
 	if id, ok := prm.hdr.ID(); ok {

pkg/services/object_manager/transformer/transformer.go

@@ -15,6 +15,8 @@ import (
 type payloadSizeLimiter struct {
 	maxSize, written uint64
 
+	withoutHomomorphicHash bool
+
 	targetInit func() ObjectTarget
 
 	target ObjectTarget
@@ -41,10 +43,14 @@ type payloadChecksumHasher struct {
 // NewPayloadSizeLimiter returns ObjectTarget instance that restricts payload length
 // of the writing object and writes generated objects to targets from initializer.
 //
+// Calculates and adds homomorphic hash to resulting objects only if withoutHomomorphicHash
+// is false.
+//
 // Objects w/ payload size less or equal than max size remain untouched.
-func NewPayloadSizeLimiter(maxSize uint64, targetInit TargetInitializer) ObjectTarget {
+func NewPayloadSizeLimiter(maxSize uint64, withoutHomomorphicHash bool, targetInit TargetInitializer) ObjectTarget {
 	return &payloadSizeLimiter{
 		maxSize:                maxSize,
+		withoutHomomorphicHash: withoutHomomorphicHash,
 		targetInit:             targetInit,
 		splitID:                object.NewSplitID(),
 	}
@@ -108,7 +114,7 @@ func (s *payloadSizeLimiter) initializeCurrent() {
 	s.target = s.targetInit()
 
 	// create payload hashers
-	s.currentHashers = payloadHashersForObject(s.current)
+	s.currentHashers = payloadHashersForObject(s.current, s.withoutHomomorphicHash)
 
 	// compose multi-writer from target and all payload hashers
 	ws := make([]io.Writer, 0, 1+len(s.currentHashers)+len(s.parentHashers))
@@ -126,9 +132,10 @@ func (s *payloadSizeLimiter) initializeCurrent() {
 	s.chunkWriter = io.MultiWriter(ws...)
 }
 
-func payloadHashersForObject(obj *object.Object) []*payloadChecksumHasher {
-	return []*payloadChecksumHasher{
-		{
+func payloadHashersForObject(obj *object.Object, withoutHomomorphicHash bool) []*payloadChecksumHasher {
+	hashers := make([]*payloadChecksumHasher, 0, 2)
+
+	hashers = append(hashers, &payloadChecksumHasher{
 		hasher: sha256.New(),
 		checksumWriter: func(binChecksum []byte) {
 			if ln := len(binChecksum); ln != sha256.Size {
@@ -143,8 +150,10 @@ func payloadHashersForObject(obj *object.Object) []*payloadChecksumHasher {
 
 			obj.SetPayloadChecksum(cs)
 		},
-		},
-		{
+	})
+
+	if !withoutHomomorphicHash {
+		hashers = append(hashers, &payloadChecksumHasher{
 			hasher: tz.New(),
 			checksumWriter: func(binChecksum []byte) {
 				if ln := len(binChecksum); ln != tz.Size {
@@ -159,8 +168,10 @@ func payloadHashersForObject(obj *object.Object) []*payloadChecksumHasher {
 
 				obj.SetPayloadHomomorphicHash(cs)
 			},
-		},
+		})
 	}
+
+	return hashers
 }
 
 func (s *payloadSizeLimiter) release(close bool) (*AccessIdentifiers, error) {