[#1310] object: Move target initialization to separate package

* Split the logic of write target initialization to different packages;
* Refactor patch and put services: since both service initialize the target
  themselves.

Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>

cmd/frostfs-node/cache.go

@@ -7,7 +7,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/metrics"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
-	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	utilSync "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/sync"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
@@ -305,11 +305,11 @@ type ttlMaxObjectSizeCache struct {
 	mtx         sync.RWMutex
 	lastUpdated time.Time
 	lastSize    uint64
-	src         putsvc.MaxSizeSource
+	src         objectwriter.MaxSizeSource
 	metrics     cacheMetrics
 }
 
-func newCachedMaxObjectSizeSource(src putsvc.MaxSizeSource) putsvc.MaxSizeSource {
+func newCachedMaxObjectSizeSource(src objectwriter.MaxSizeSource) objectwriter.MaxSizeSource {
 	return &ttlMaxObjectSizeCache{
 		src:     src,
 		metrics: metrics.NewCacheMetrics("max_object_size"),

cmd/frostfs-node/object.go

@@ -24,6 +24,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/acl"
 	v2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/acl/v2"
 	objectAPE "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/ape"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	deletesvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/delete"
 	deletesvcV2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/delete/v2"
 	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
@@ -188,7 +189,7 @@ func initObjectService(c *cfg) {
 
 	sDeleteV2 := createDeleteServiceV2(sDelete)
 
-	sPatch := createPatchSvc(sGet, sPut, keyStorage)
+	sPatch := createPatchSvc(sGet, sPut)
 
 	// build service pipeline
 	// grpc | audit | <metrics> | signature | response | acl | ape | split
@@ -326,7 +327,7 @@ func createReplicator(c *cfg, keyStorage *util.KeyStorage, cache *cache.ClientCa
 		),
 		replicator.WithLocalStorage(ls),
 		replicator.WithRemoteSender(
-			putsvc.NewRemoteSender(keyStorage, cache),
+			objectwriter.NewRemoteSender(keyStorage, cache),
 		),
 		replicator.WithRemoteGetter(
 			getsvc.NewRemoteGetter(c.clientCache, c.netMapSource, keyStorage),
@@ -338,7 +339,7 @@ func createReplicator(c *cfg, keyStorage *util.KeyStorage, cache *cache.ClientCa
 func createPutSvc(c *cfg, keyStorage *util.KeyStorage, irFetcher *cachedIRFetcher) *putsvc.Service {
 	ls := c.cfgObject.cfgLocalStorage.localStorage
 
-	var os putsvc.ObjectStorage = engineWithoutNotifications{
+	var os objectwriter.ObjectStorage = engineWithoutNotifications{
 		engine: ls,
 	}
 
@@ -352,9 +353,9 @@ func createPutSvc(c *cfg, keyStorage *util.KeyStorage, irFetcher *cachedIRFetche
 		c,
 		c.cfgNetmap.state,
 		irFetcher,
-		putsvc.WithWorkerPools(c.cfgObject.pool.putRemote, c.cfgObject.pool.putLocal),
+		objectwriter.WithWorkerPools(c.cfgObject.pool.putRemote, c.cfgObject.pool.putLocal),
-		putsvc.WithLogger(c.log),
+		objectwriter.WithLogger(c.log),
-		putsvc.WithVerifySessionTokenIssuer(!c.cfgObject.skipSessionTokenIssuerVerification),
+		objectwriter.WithVerifySessionTokenIssuer(!c.cfgObject.skipSessionTokenIssuerVerification),
 	)
 }
 
@@ -362,8 +363,8 @@ func createPutSvcV2(sPut *putsvc.Service, keyStorage *util.KeyStorage) *putsvcV2
 	return putsvcV2.NewService(sPut, keyStorage)
 }
 
-func createPatchSvc(sGet *getsvc.Service, sPut *putsvc.Service, keyStorage *util.KeyStorage) *patchsvc.Service {
+func createPatchSvc(sGet *getsvc.Service, sPut *putsvc.Service) *patchsvc.Service {
-	return patchsvc.NewService(keyStorage, sGet, sPut)
+	return patchsvc.NewService(sPut.Config, sGet)
 }
 
 func createSearchSvc(c *cfg, keyStorage *util.KeyStorage, traverseGen *util.TraverserGenerator, coreConstructor *cache.ClientCache) *searchsvc.Service {

pkg/services/object/common/target/builder.go

@@ -1,4 +1,4 @@
-package putsvc
+package target
 
 import (
 	"context"

pkg/services/object/common/target/pool.go

@@ -1,4 +1,4 @@
-package putsvc
+package target
 
 import (
 	"sync"

pkg/services/object/common/target/target.go

@@ -0,0 +1,170 @@
+package target
+
+import (
+	"errors"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
+	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/transformer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
+)
+
+func New(prm *objectwriter.Params) (transformer.ChunkedObjectWriter, error) {
+	// prepare needed put parameters
+	if err := preparePrm(prm); err != nil {
+		return nil, fmt.Errorf("could not prepare put parameters: %w", err)
+	}
+
+	if prm.Header.Signature() != nil {
+		return newUntrustedTarget(prm)
+	}
+	return newTrustedTarget(prm)
+}
+
+func newUntrustedTarget(prm *objectwriter.Params) (transformer.ChunkedObjectWriter, error) {
+	maxPayloadSz := prm.Config.MaxSizeSrc.MaxObjectSize()
+	if maxPayloadSz == 0 {
+		return nil, errors.New("could not obtain max object size parameter")
+	}
+
+	if prm.SignRequestPrivateKey == nil {
+		nodeKey, err := prm.Config.KeyStorage.GetKey(nil)
+		if err != nil {
+			return nil, err
+		}
+		prm.SignRequestPrivateKey = nodeKey
+	}
+
+	// prepare untrusted-Put object target
+	return &validatingPreparedTarget{
+		nextTarget: newInMemoryObjectBuilder(objectwriter.New(prm)),
+		fmt:        prm.Config.FormatValidator,
+
+		maxPayloadSz: maxPayloadSz,
+	}, nil
+}
+
+func newTrustedTarget(prm *objectwriter.Params) (transformer.ChunkedObjectWriter, error) {
+	maxPayloadSz := prm.Config.MaxSizeSrc.MaxObjectSize()
+	if maxPayloadSz == 0 {
+		return nil, errors.New("could not obtain max object size parameter")
+	}
+
+	sToken := prm.Common.SessionToken()
+
+	// prepare trusted-Put object target
+
+	// get private token from local storage
+	var sessionInfo *util.SessionInfo
+
+	if sToken != nil {
+		sessionInfo = &util.SessionInfo{
+			ID:    sToken.ID(),
+			Owner: sToken.Issuer(),
+		}
+	}
+
+	key, err := prm.Config.KeyStorage.GetKey(sessionInfo)
+	if err != nil {
+		return nil, fmt.Errorf("could not receive session key: %w", err)
+	}
+
+	// In case session token is missing, the line above returns the default key.
+	// If it isn't owner key, replication attempts will fail, thus this check.
+	ownerObj := prm.Header.OwnerID()
+	if ownerObj.IsEmpty() {
+		return nil, errors.New("missing object owner")
+	}
+
+	if sToken == nil {
+		var ownerSession user.ID
+		user.IDFromKey(&ownerSession, key.PublicKey)
+
+		if !ownerObj.Equals(ownerSession) {
+			return nil, errors.New("session token is missing but object owner id is different from the default key")
+		}
+	} else {
+		if !ownerObj.Equals(sessionInfo.Owner) {
+			return nil, fmt.Errorf("different token issuer and object owner identifiers %s/%s", sessionInfo.Owner, ownerObj)
+		}
+	}
+
+	if prm.SignRequestPrivateKey == nil {
+		prm.SignRequestPrivateKey = key
+	}
+
+	return &validatingTarget{
+		fmt: prm.Config.FormatValidator,
+		nextTarget: transformer.NewPayloadSizeLimiter(transformer.Params{
+			Key:                    key,
+			NextTargetInit:         func() transformer.ObjectWriter { return objectwriter.New(prm) },
+			NetworkState:           prm.Config.NetworkState,
+			MaxSize:                maxPayloadSz,
+			WithoutHomomorphicHash: containerSDK.IsHomomorphicHashingDisabled(prm.Container),
+			SessionToken:           sToken,
+		}),
+	}, nil
+}
+
+func preparePrm(prm *objectwriter.Params) error {
+	var err error
+
+	// get latest network map
+	nm, err := netmap.GetLatestNetworkMap(prm.Config.NetmapSource)
+	if err != nil {
+		//return fmt.Errorf("(%T) could not get latest network map: %w", p, err)
+		return fmt.Errorf("could not get latest network map: %w", err)
+	}
+
+	idCnr, ok := prm.Header.ContainerID()
+	if !ok {
+		return errors.New("missing container ID")
+	}
+
+	// get container to store the object
+	cnrInfo, err := prm.Config.ContainerSource.Get(idCnr)
+	if err != nil {
+		//return fmt.Errorf("(%T) could not get container by ID: %w", p, err)
+		return fmt.Errorf("could not get container by ID: %w", err)
+	}
+
+	prm.Container = cnrInfo.Value
+
+	// add common options
+	prm.TraverseOpts = append(prm.TraverseOpts,
+		// set processing container
+		placement.ForContainer(prm.Container),
+	)
+
+	if ech := prm.Header.ECHeader(); ech != nil {
+		prm.TraverseOpts = append(prm.TraverseOpts,
+			// set identifier of the processing object
+			placement.ForObject(ech.Parent()),
+		)
+	} else if id, ok := prm.Header.ID(); ok {
+		prm.TraverseOpts = append(prm.TraverseOpts,
+			// set identifier of the processing object
+			placement.ForObject(id),
+		)
+	}
+
+	// create placement builder from network map
+	builder := placement.NewNetworkMapBuilder(nm)
+
+	if prm.Common.LocalOnly() {
+		// restrict success count to 1 stored copy (to local storage)
+		prm.TraverseOpts = append(prm.TraverseOpts, placement.SuccessAfter(1))
+
+		// use local-only placement builder
+		builder = util.NewLocalPlacement(builder, prm.Config.NetmapKeys)
+	}
+
+	// set placement builder
+	prm.TraverseOpts = append(prm.TraverseOpts, placement.UseBuilder(builder))
+
+	return nil
+}

pkg/services/object/common/target/validation.go

@@ -1,4 +1,4 @@
-package putsvc
+package target
 
 import (
 	"bytes"

pkg/services/object/common/writer/common.go

@@ -1,4 +1,4 @@
-package putsvc
+package writer
 
 import (
 	"context"
@@ -13,23 +13,23 @@ import (
 	"go.uber.org/zap"
 )
 
-type nodeIterator struct {
+type NodeIterator struct {
-	traversal
+	Traversal
-	cfg *cfg
+	cfg *Config
 }
 
-func (c *cfg) newNodeIterator(opts []placement.Option) *nodeIterator {
+func (c *Config) NewNodeIterator(opts []placement.Option) *NodeIterator {
-	return &nodeIterator{
+	return &NodeIterator{
-		traversal: traversal{
+		Traversal: Traversal{
-			opts:     opts,
+			Opts:    opts,
-			mExclude: make(map[string]*bool),
+			Exclude: make(map[string]*bool),
 		},
 		cfg: c,
 	}
 }
 
-func (n *nodeIterator) forEachNode(ctx context.Context, f func(context.Context, nodeDesc) error) error {
+func (n *NodeIterator) ForEachNode(ctx context.Context, f func(context.Context, NodeDescriptor) error) error {
-	traverser, err := placement.NewTraverser(n.traversal.opts...)
+	traverser, err := placement.NewTraverser(n.Traversal.Opts...)
 	if err != nil {
 		return fmt.Errorf("could not create object placement traverser: %w", err)
 	}
@@ -56,10 +56,10 @@ func (n *nodeIterator) forEachNode(ctx context.Context, f func(context.Context,
 	}
 
 	// perform additional container broadcast if needed
-	if n.traversal.submitPrimaryPlacementFinish() {
+	if n.Traversal.submitPrimaryPlacementFinish() {
-		err := n.forEachNode(ctx, f)
+		err := n.ForEachNode(ctx, f)
 		if err != nil {
-			n.cfg.log.Error(logs.PutAdditionalContainerBroadcastFailure, zap.Error(err))
+			n.cfg.Logger.Error(logs.PutAdditionalContainerBroadcastFailure, zap.Error(err))
 			// we don't fail primary operation because of broadcast failure
 		}
 	}
@@ -67,11 +67,11 @@ func (n *nodeIterator) forEachNode(ctx context.Context, f func(context.Context,
 	return nil
 }
 
-func (n *nodeIterator) forEachAddress(ctx context.Context, traverser *placement.Traverser, addrs []placement.Node, f func(context.Context, nodeDesc) error, resErr *atomic.Value) bool {
+func (n *NodeIterator) forEachAddress(ctx context.Context, traverser *placement.Traverser, addrs []placement.Node, f func(context.Context, NodeDescriptor) error, resErr *atomic.Value) bool {
 	var wg sync.WaitGroup
 
 	for _, addr := range addrs {
-		if ok := n.mExclude[string(addr.PublicKey())]; ok != nil {
+		if ok := n.Exclude[string(addr.PublicKey())]; ok != nil {
 			if *ok {
 				traverser.SubmitSuccess()
 			}
@@ -86,10 +86,10 @@ func (n *nodeIterator) forEachAddress(ctx context.Context, traverser *placement.
 		if err := workerPool.Submit(func() {
 			defer wg.Done()
 
-			err := f(ctx, nodeDesc{local: isLocal, info: addr})
+			err := f(ctx, NodeDescriptor{Local: isLocal, Info: addr})
 			if err != nil {
 				resErr.Store(err)
-				svcutil.LogServiceError(n.cfg.log, "PUT", addr.Addresses(), err)
+				svcutil.LogServiceError(n.cfg.Logger, "PUT", addr.Addresses(), err)
 				return
 			}
 
@@ -97,7 +97,7 @@ func (n *nodeIterator) forEachAddress(ctx context.Context, traverser *placement.
 			*item = true
 		}); err != nil {
 			wg.Done()
-			svcutil.LogWorkerPoolError(n.cfg.log, "PUT", err)
+			svcutil.LogWorkerPoolError(n.cfg.Logger, "PUT", err)
 			return true
 		}
 
@@ -105,7 +105,7 @@ func (n *nodeIterator) forEachAddress(ctx context.Context, traverser *placement.
 		// in subsequent container broadcast. Note that we don't
 		// process this node during broadcast if primary placement
 		// on it failed.
-		n.traversal.submitProcessed(addr, item)
+		n.Traversal.submitProcessed(addr, item)
 	}
 
 	wg.Wait()
@@ -113,6 +113,6 @@ func (n *nodeIterator) forEachAddress(ctx context.Context, traverser *placement.
 	return false
 }
 
-func needAdditionalBroadcast(obj *objectSDK.Object, localOnly bool) bool {
+func NeedAdditionalBroadcast(obj *objectSDK.Object, localOnly bool) bool {
 	return len(obj.Children()) > 0 || (!localOnly && (obj.Type() == objectSDK.TypeTombstone || obj.Type() == objectSDK.TypeLock))
 }

pkg/services/object/common/writer/dispatcher.go

@@ -1,4 +1,4 @@
-package putsvc
+package writer
 
 import (
 	"context"

pkg/services/object/common/writer/distributed.go

@@ -1,4 +1,4 @@
-package putsvc
+package writer
 
 import (
 	"context"
@@ -13,47 +13,47 @@ type preparedObjectTarget interface {
 	WriteObject(context.Context, *objectSDK.Object, object.ContentMeta) error
 }
 
-type distributedTarget struct {
+type distributedWriter struct {
+	cfg *Config
+
 	placementOpts []placement.Option
 
 	obj     *objectSDK.Object
 	objMeta object.ContentMeta
 
-	*cfg
+	nodeTargetInitializer func(NodeDescriptor) preparedObjectTarget
 
-	nodeTargetInitializer func(nodeDesc) preparedObjectTarget
+	relay func(context.Context, NodeDescriptor) error
-
-	relay func(context.Context, nodeDesc) error
 
 	resetSuccessAfterOnBroadcast bool
 }
 
-// parameters and state of container traversal.
+// parameters and state of container Traversal.
-type traversal struct {
+type Traversal struct {
-	opts []placement.Option
+	Opts []placement.Option
 
 	// need of additional broadcast after the object is saved
-	extraBroadcastEnabled bool
+	ExtraBroadcastEnabled bool
 
 	// container nodes which was processed during the primary object placement
-	mExclude map[string]*bool
+	Exclude map[string]*bool
 
-	resetSuccessAfterOnBroadcast bool
+	ResetSuccessAfterOnBroadcast bool
 }
 
 // updates traversal parameters after the primary placement finish and
 // returns true if additional container broadcast is needed.
-func (x *traversal) submitPrimaryPlacementFinish() bool {
+func (x *Traversal) submitPrimaryPlacementFinish() bool {
-	if x.extraBroadcastEnabled {
+	if x.ExtraBroadcastEnabled {
 		// do not track success during container broadcast (best-effort)
-		x.opts = append(x.opts, placement.WithoutSuccessTracking())
+		x.Opts = append(x.Opts, placement.WithoutSuccessTracking())
 
-		if x.resetSuccessAfterOnBroadcast {
+		if x.ResetSuccessAfterOnBroadcast {
-			x.opts = append(x.opts, placement.ResetSuccessAfter())
+			x.Opts = append(x.Opts, placement.ResetSuccessAfter())
 		}
 
 		// avoid 2nd broadcast
-		x.extraBroadcastEnabled = false
+		x.ExtraBroadcastEnabled = false
 
 		return true
 	}
@@ -62,22 +62,22 @@ func (x *traversal) submitPrimaryPlacementFinish() bool {
 }
 
 // marks the container node as processed during the primary object placement.
-func (x *traversal) submitProcessed(n placement.Node, item *bool) {
+func (x *Traversal) submitProcessed(n placement.Node, item *bool) {
-	if x.extraBroadcastEnabled {
+	if x.ExtraBroadcastEnabled {
 		key := string(n.PublicKey())
 
-		if x.mExclude == nil {
+		if x.Exclude == nil {
-			x.mExclude = make(map[string]*bool, 1)
+			x.Exclude = make(map[string]*bool, 1)
 		}
 
-		x.mExclude[key] = item
+		x.Exclude[key] = item
 	}
 }
 
-type nodeDesc struct {
+type NodeDescriptor struct {
-	local bool
+	Local bool
 
-	info placement.Node
+	Info placement.Node
 }
 
 // errIncompletePut is returned if processing on a container fails.
@@ -96,19 +96,19 @@ func (x errIncompletePut) Error() string {
 }
 
 // WriteObject implements the transformer.ObjectWriter interface.
-func (t *distributedTarget) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
+func (t *distributedWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
 	t.obj = obj
 
 	var err error
 
-	if t.objMeta, err = t.fmtValidator.ValidateContent(t.obj); err != nil {
+	if t.objMeta, err = t.cfg.FormatValidator.ValidateContent(t.obj); err != nil {
 		return fmt.Errorf("(%T) could not validate payload content: %w", t, err)
 	}
 	return t.iteratePlacement(ctx)
 }
 
-func (t *distributedTarget) sendObject(ctx context.Context, node nodeDesc) error {
+func (t *distributedWriter) sendObject(ctx context.Context, node NodeDescriptor) error {
-	if !node.local && t.relay != nil {
+	if !node.Local && t.relay != nil {
 		return t.relay(ctx, node)
 	}
 
@@ -121,11 +121,11 @@ func (t *distributedTarget) sendObject(ctx context.Context, node nodeDesc) error
 	return nil
 }
 
-func (t *distributedTarget) iteratePlacement(ctx context.Context) error {
+func (t *distributedWriter) iteratePlacement(ctx context.Context) error {
 	id, _ := t.obj.ID()
 
-	iter := t.cfg.newNodeIterator(append(t.placementOpts, placement.ForObject(id)))
+	iter := t.cfg.NewNodeIterator(append(t.placementOpts, placement.ForObject(id)))
-	iter.extraBroadcastEnabled = needAdditionalBroadcast(t.obj, false /* Distributed target is for cluster-wide PUT */)
+	iter.ExtraBroadcastEnabled = NeedAdditionalBroadcast(t.obj, false /* Distributed target is for cluster-wide PUT */)
-	iter.resetSuccessAfterOnBroadcast = t.resetSuccessAfterOnBroadcast
+	iter.ResetSuccessAfterOnBroadcast = t.resetSuccessAfterOnBroadcast
-	return iter.forEachNode(ctx, t.sendObject)
+	return iter.ForEachNode(ctx, t.sendObject)
 }

pkg/services/object/common/writer/ec.go

@@ -1,4 +1,4 @@
-package putsvc
+package writer
 
 import (
 	"context"
@@ -23,23 +23,23 @@ import (
 	"golang.org/x/sync/errgroup"
 )
 
-var _ transformer.ObjectWriter = (*ecWriter)(nil)
+var _ transformer.ObjectWriter = (*ECWriter)(nil)
 
 var errUnsupportedECObject = errors.New("object is not supported for erasure coding")
 
-type ecWriter struct {
+type ECWriter struct {
-	cfg           *cfg
+	Config        *Config
-	placementOpts []placement.Option
+	PlacementOpts []placement.Option
-	container     containerSDK.Container
+	Container     containerSDK.Container
-	key           *ecdsa.PrivateKey
+	Key           *ecdsa.PrivateKey
-	commonPrm     *svcutil.CommonPrm
+	CommonPrm     *svcutil.CommonPrm
-	relay         func(context.Context, client.NodeInfo, client.MultiAddressClient) error
+	Relay         func(context.Context, client.NodeInfo, client.MultiAddressClient) error
 
-	objMeta      object.ContentMeta
+	ObjectMeta      object.ContentMeta
-	objMetaValid bool
+	ObjectMetaValid bool
 }
 
-func (e *ecWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
+func (e *ECWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
 	relayed, err := e.relayIfNotContainerNode(ctx, obj)
 	if err != nil {
 		return err
@@ -53,11 +53,11 @@ func (e *ecWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error
 		return errUnsupportedECObject
 	}
 
-	if !e.objMetaValid {
+	if !e.ObjectMetaValid {
-		if e.objMeta, err = e.cfg.fmtValidator.ValidateContent(obj); err != nil {
+		if e.ObjectMeta, err = e.Config.FormatValidator.ValidateContent(obj); err != nil {
 			return fmt.Errorf("(%T) could not validate payload content: %w", e, err)
 		}
-		e.objMetaValid = true
+		e.ObjectMetaValid = true
 	}
 
 	if obj.ECHeader() != nil {
@@ -66,8 +66,8 @@ func (e *ecWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error
 	return e.writeRawObject(ctx, obj)
 }
 
-func (e *ecWriter) relayIfNotContainerNode(ctx context.Context, obj *objectSDK.Object) (bool, error) {
+func (e *ECWriter) relayIfNotContainerNode(ctx context.Context, obj *objectSDK.Object) (bool, error) {
-	if e.relay == nil {
+	if e.Relay == nil {
 		return false, nil
 	}
 	currentNodeIsContainerNode, err := e.currentNodeIsContainerNode()
@@ -90,8 +90,8 @@ func (e *ecWriter) relayIfNotContainerNode(ctx context.Context, obj *objectSDK.O
 	return true, nil
 }
 
-func (e *ecWriter) currentNodeIsContainerNode() (bool, error) {
+func (e *ECWriter) currentNodeIsContainerNode() (bool, error) {
-	t, err := placement.NewTraverser(e.placementOpts...)
+	t, err := placement.NewTraverser(e.PlacementOpts...)
 	if err != nil {
 		return false, err
 	}
@@ -101,7 +101,7 @@ func (e *ecWriter) currentNodeIsContainerNode() (bool, error) {
 			break
 		}
 		for _, node := range nodes {
-			if e.cfg.netmapKeys.IsLocalKey(node.PublicKey()) {
+			if e.Config.NetmapKeys.IsLocalKey(node.PublicKey()) {
 				return true, nil
 			}
 		}
@@ -109,8 +109,8 @@ func (e *ecWriter) currentNodeIsContainerNode() (bool, error) {
 	return false, nil
 }
 
-func (e *ecWriter) relayToContainerNode(ctx context.Context, objID oid.ID, index uint32) error {
+func (e *ECWriter) relayToContainerNode(ctx context.Context, objID oid.ID, index uint32) error {
-	t, err := placement.NewTraverser(append(e.placementOpts, placement.ForObject(objID))...)
+	t, err := placement.NewTraverser(append(e.PlacementOpts, placement.ForObject(objID))...)
 	if err != nil {
 		return err
 	}
@@ -126,18 +126,18 @@ func (e *ecWriter) relayToContainerNode(ctx context.Context, objID oid.ID, index
 			var info client.NodeInfo
 			client.NodeInfoFromNetmapElement(&info, node)
 
-			c, err := e.cfg.clientConstructor.Get(info)
+			c, err := e.Config.ClientConstructor.Get(info)
 			if err != nil {
 				return fmt.Errorf("could not create SDK client %s: %w", info.AddressGroup(), err)
 			}
 
 			completed := make(chan interface{})
-			if poolErr := e.cfg.remotePool.Submit(func() {
+			if poolErr := e.Config.RemotePool.Submit(func() {
 				defer close(completed)
-				err = e.relay(ctx, info, c)
+				err = e.Relay(ctx, info, c)
 			}); poolErr != nil {
 				close(completed)
-				svcutil.LogWorkerPoolError(e.cfg.log, "PUT", poolErr)
+				svcutil.LogWorkerPoolError(e.Config.Logger, "PUT", poolErr)
 				return poolErr
 			}
 			<-completed
@@ -145,7 +145,7 @@ func (e *ecWriter) relayToContainerNode(ctx context.Context, objID oid.ID, index
 			if err == nil {
 				return nil
 			}
-			e.cfg.log.Logger.Warn(logs.ECFailedToSendToContainerNode, zap.Stringers("address_group", info.AddressGroup()))
+			e.Config.Logger.Logger.Warn(logs.ECFailedToSendToContainerNode, zap.Stringers("address_group", info.AddressGroup()))
 			lastErr = err
 		}
 	}
@@ -157,12 +157,12 @@ func (e *ecWriter) relayToContainerNode(ctx context.Context, objID oid.ID, index
 	}
 }
 
-func (e *ecWriter) writeECPart(ctx context.Context, obj *objectSDK.Object) error {
+func (e *ECWriter) writeECPart(ctx context.Context, obj *objectSDK.Object) error {
-	if e.commonPrm.LocalOnly() {
+	if e.CommonPrm.LocalOnly() {
 		return e.writePartLocal(ctx, obj)
 	}
 
-	t, err := placement.NewTraverser(append(e.placementOpts, placement.ForObject(obj.ECHeader().Parent()))...)
+	t, err := placement.NewTraverser(append(e.PlacementOpts, placement.ForObject(obj.ECHeader().Parent()))...)
 	if err != nil {
 		return err
 	}
@@ -187,18 +187,18 @@ func (e *ecWriter) writeECPart(ctx context.Context, obj *objectSDK.Object) error
 	return nil
 }
 
-func (e *ecWriter) writeRawObject(ctx context.Context, obj *objectSDK.Object) error {
+func (e *ECWriter) writeRawObject(ctx context.Context, obj *objectSDK.Object) error {
 	// now only single EC policy is supported
-	c, err := erasurecode.NewConstructor(policy.ECDataCount(e.container.PlacementPolicy()), policy.ECParityCount(e.container.PlacementPolicy()))
+	c, err := erasurecode.NewConstructor(policy.ECDataCount(e.Container.PlacementPolicy()), policy.ECParityCount(e.Container.PlacementPolicy()))
 	if err != nil {
 		return err
 	}
-	parts, err := c.Split(obj, e.key)
+	parts, err := c.Split(obj, e.Key)
 	if err != nil {
 		return err
 	}
 	objID, _ := obj.ID()
-	t, err := placement.NewTraverser(append(e.placementOpts, placement.ForObject(objID))...)
+	t, err := placement.NewTraverser(append(e.PlacementOpts, placement.ForObject(objID))...)
 	if err != nil {
 		return err
 	}
@@ -230,7 +230,7 @@ func (e *ecWriter) writeRawObject(ctx context.Context, obj *objectSDK.Object) er
 	return nil
 }
 
-func (e *ecWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx int, nodes []placement.Node, visited []atomic.Bool) error {
+func (e *ECWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx int, nodes []placement.Node, visited []atomic.Bool) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
@@ -243,7 +243,7 @@ func (e *ecWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx
 	if err == nil {
 		return nil
 	}
-	e.cfg.log.Warn(logs.ECFailedToSaveECPart, zap.Stringer("part_address", object.AddressOf(obj)),
+	e.Config.Logger.Warn(logs.ECFailedToSaveECPart, zap.Stringer("part_address", object.AddressOf(obj)),
 		zap.Stringer("parent_address", obj.ECHeader().Parent()), zap.Int("part_index", partIdx),
 		zap.String("node", hex.EncodeToString(node.PublicKey())), zap.Error(err))
 
@@ -267,7 +267,7 @@ func (e *ecWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx
 		if err == nil {
 			return nil
 		}
-		e.cfg.log.Warn(logs.ECFailedToSaveECPart, zap.Stringer("part_address", object.AddressOf(obj)),
+		e.Config.Logger.Warn(logs.ECFailedToSaveECPart, zap.Stringer("part_address", object.AddressOf(obj)),
 			zap.Stringer("parent_address", obj.ECHeader().Parent()), zap.Int("part_index", partIdx),
 			zap.String("node", hex.EncodeToString(node.PublicKey())),
 			zap.Error(err))
@@ -291,7 +291,7 @@ func (e *ecWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx
 		if err == nil {
 			return nil
 		}
-		e.cfg.log.Warn(logs.ECFailedToSaveECPart, zap.Stringer("part_address", object.AddressOf(obj)),
+		e.Config.Logger.Warn(logs.ECFailedToSaveECPart, zap.Stringer("part_address", object.AddressOf(obj)),
 			zap.Stringer("parent_address", obj.ECHeader().Parent()), zap.Int("part_index", partIdx),
 			zap.String("node", hex.EncodeToString(node.PublicKey())),
 			zap.Error(err))
@@ -300,22 +300,22 @@ func (e *ecWriter) writePart(ctx context.Context, obj *objectSDK.Object, partIdx
 	return fmt.Errorf("failed to save EC chunk %s to any node", object.AddressOf(obj))
 }
 
-func (e *ecWriter) putECPartToNode(ctx context.Context, obj *objectSDK.Object, node placement.Node) error {
+func (e *ECWriter) putECPartToNode(ctx context.Context, obj *objectSDK.Object, node placement.Node) error {
-	if e.cfg.netmapKeys.IsLocalKey(node.PublicKey()) {
+	if e.Config.NetmapKeys.IsLocalKey(node.PublicKey()) {
 		return e.writePartLocal(ctx, obj)
 	}
 	return e.writePartRemote(ctx, obj, node)
 }
 
-func (e *ecWriter) writePartLocal(ctx context.Context, obj *objectSDK.Object) error {
+func (e *ECWriter) writePartLocal(ctx context.Context, obj *objectSDK.Object) error {
 	var err error
-	localTarget := localTarget{
+	localTarget := LocalTarget{
-		storage: e.cfg.localStore,
+		Storage: e.Config.LocalStore,
 	}
 	completed := make(chan interface{})
-	if poolErr := e.cfg.localPool.Submit(func() {
+	if poolErr := e.Config.LocalPool.Submit(func() {
 		defer close(completed)
-		err = localTarget.WriteObject(ctx, obj, e.objMeta)
+		err = localTarget.WriteObject(ctx, obj, e.ObjectMeta)
 	}); poolErr != nil {
 		close(completed)
 		return poolErr
@@ -324,22 +324,22 @@ func (e *ecWriter) writePartLocal(ctx context.Context, obj *objectSDK.Object) er
 	return err
 }
 
-func (e *ecWriter) writePartRemote(ctx context.Context, obj *objectSDK.Object, node placement.Node) error {
+func (e *ECWriter) writePartRemote(ctx context.Context, obj *objectSDK.Object, node placement.Node) error {
 	var clientNodeInfo client.NodeInfo
 	client.NodeInfoFromNetmapElement(&clientNodeInfo, node)
 
-	remoteTaget := remoteTarget{
+	remoteTaget := remoteWriter{
-		privateKey:        e.key,
+		privateKey:        e.Key,
-		clientConstructor: e.cfg.clientConstructor,
+		clientConstructor: e.Config.ClientConstructor,
-		commonPrm:         e.commonPrm,
+		commonPrm:         e.CommonPrm,
 		nodeInfo:          clientNodeInfo,
 	}
 
 	var err error
 	completed := make(chan interface{})
-	if poolErr := e.cfg.remotePool.Submit(func() {
+	if poolErr := e.Config.RemotePool.Submit(func() {
 		defer close(completed)
-		err = remoteTaget.WriteObject(ctx, obj, e.objMeta)
+		err = remoteTaget.WriteObject(ctx, obj, e.ObjectMeta)
 	}); poolErr != nil {
 		close(completed)
 		return poolErr

pkg/services/object/common/writer/local.go

@@ -1,4 +1,4 @@
-package putsvc
+package writer
 
 import (
 	"context"
@@ -24,19 +24,19 @@ type ObjectStorage interface {
 	IsLocked(context.Context, oid.Address) (bool, error)
 }
 
-type localTarget struct {
+type LocalTarget struct {
-	storage ObjectStorage
+	Storage ObjectStorage
 }
 
-func (t localTarget) WriteObject(ctx context.Context, obj *objectSDK.Object, meta objectCore.ContentMeta) error {
+func (t LocalTarget) WriteObject(ctx context.Context, obj *objectSDK.Object, meta objectCore.ContentMeta) error {
 	switch meta.Type() {
 	case objectSDK.TypeTombstone:
-		err := t.storage.Delete(ctx, objectCore.AddressOf(obj), meta.Objects())
+		err := t.Storage.Delete(ctx, objectCore.AddressOf(obj), meta.Objects())
 		if err != nil {
 			return fmt.Errorf("could not delete objects from tombstone locally: %w", err)
 		}
 	case objectSDK.TypeLock:
-		err := t.storage.Lock(ctx, objectCore.AddressOf(obj), meta.Objects())
+		err := t.Storage.Lock(ctx, objectCore.AddressOf(obj), meta.Objects())
 		if err != nil {
 			return fmt.Errorf("could not lock object from lock objects locally: %w", err)
 		}
@@ -44,7 +44,7 @@ func (t localTarget) WriteObject(ctx context.Context, obj *objectSDK.Object, met
 		// objects that do not change meta storage
 	}
 
-	if err := t.storage.Put(ctx, obj); err != nil {
+	if err := t.Storage.Put(ctx, obj); err != nil {
 		return fmt.Errorf("(%T) could not put object to local storage: %w", t, err)
 	}
 	return nil

pkg/services/object/common/writer/remote.go

@@ -1,4 +1,4 @@
-package putsvc
+package writer
 
 import (
 	"context"
@@ -16,7 +16,7 @@ import (
 	"google.golang.org/grpc/status"
 )
 
-type remoteTarget struct {
+type remoteWriter struct {
 	privateKey *ecdsa.PrivateKey
 
 	commonPrm *util.CommonPrm
@@ -41,7 +41,7 @@ type RemotePutPrm struct {
 	obj *objectSDK.Object
 }
 
-func (t *remoteTarget) WriteObject(ctx context.Context, obj *objectSDK.Object, _ objectcore.ContentMeta) error {
+func (t *remoteWriter) WriteObject(ctx context.Context, obj *objectSDK.Object, _ objectcore.ContentMeta) error {
 	c, err := t.clientConstructor.Get(t.nodeInfo)
 	if err != nil {
 		return fmt.Errorf("(%T) could not create SDK client %s: %w", t, t.nodeInfo, err)
@@ -64,7 +64,7 @@ func (t *remoteTarget) WriteObject(ctx context.Context, obj *objectSDK.Object, _
 	return t.putStream(ctx, prm)
 }
 
-func (t *remoteTarget) putStream(ctx context.Context, prm internalclient.PutObjectPrm) error {
+func (t *remoteWriter) putStream(ctx context.Context, prm internalclient.PutObjectPrm) error {
 	_, err := internalclient.PutObject(ctx, prm)
 	if err != nil {
 		return fmt.Errorf("(%T) could not put object to %s: %w", t, t.nodeInfo.AddressGroup(), err)
@@ -72,7 +72,7 @@ func (t *remoteTarget) putStream(ctx context.Context, prm internalclient.PutObje
 	return nil
 }
 
-func (t *remoteTarget) putSingle(ctx context.Context, prm internalclient.PutObjectPrm) error {
+func (t *remoteWriter) putSingle(ctx context.Context, prm internalclient.PutObjectPrm) error {
 	_, err := internalclient.PutObjectSingle(ctx, prm)
 	if err != nil {
 		return fmt.Errorf("(%T) could not put single object to %s: %w", t, t.nodeInfo.AddressGroup(), err)
@@ -113,7 +113,7 @@ func (s *RemoteSender) PutObject(ctx context.Context, p *RemotePutPrm) error {
 		return err
 	}
 
-	t := &remoteTarget{
+	t := &remoteWriter{
 		privateKey:        key,
 		clientConstructor: s.clientConstructor,
 	}

pkg/services/object/common/writer/writer.go

@@ -0,0 +1,183 @@
+package writer
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/policy"
+	objutil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/transformer"
+)
+
+type MaxSizeSource interface {
+	// MaxObjectSize returns maximum payload size
+	// of physically stored object in system.
+	//
+	// Must return 0 if value can not be obtained.
+	MaxObjectSize() uint64
+}
+
+type ClientConstructor interface {
+	Get(client.NodeInfo) (client.MultiAddressClient, error)
+}
+
+type InnerRing interface {
+	InnerRingKeys() ([][]byte, error)
+}
+
+type FormatValidatorConfig interface {
+	VerifySessionTokenIssuer() bool
+}
+
+// Config represents a set of static parameters that are established during
+// the initialization phase of all services.
+type Config struct {
+	KeyStorage *objutil.KeyStorage
+
+	MaxSizeSrc MaxSizeSource
+
+	LocalStore ObjectStorage
+
+	ContainerSource container.Source
+
+	NetmapSource netmap.Source
+
+	RemotePool, LocalPool util.WorkerPool
+
+	NetmapKeys netmap.AnnouncedKeys
+
+	FormatValidator *object.FormatValidator
+
+	NetworkState netmap.State
+
+	ClientConstructor ClientConstructor
+
+	Logger *logger.Logger
+
+	VerifySessionTokenIssuer bool
+}
+
+type Option func(*Config)
+
+func WithWorkerPools(remote, local util.WorkerPool) Option {
+	return func(c *Config) {
+		c.RemotePool, c.LocalPool = remote, local
+	}
+}
+
+func WithLogger(l *logger.Logger) Option {
+	return func(c *Config) {
+		c.Logger = l
+	}
+}
+
+func WithVerifySessionTokenIssuer(v bool) Option {
+	return func(c *Config) {
+		c.VerifySessionTokenIssuer = v
+	}
+}
+
+func (c *Config) getWorkerPool(pub []byte) (util.WorkerPool, bool) {
+	if c.NetmapKeys.IsLocalKey(pub) {
+		return c.LocalPool, true
+	}
+	return c.RemotePool, false
+}
+
+type Params struct {
+	Config *Config
+
+	Common *objutil.CommonPrm
+
+	Header *objectSDK.Object
+
+	Container containerSDK.Container
+
+	TraverseOpts []placement.Option
+
+	Relay func(context.Context, client.NodeInfo, client.MultiAddressClient) error
+
+	SignRequestPrivateKey *ecdsa.PrivateKey
+}
+
+func New(prm *Params) transformer.ObjectWriter {
+	if container.IsECContainer(prm.Container) && object.IsECSupported(prm.Header) {
+		return newECWriter(prm)
+	}
+	return newDefaultObjectWriter(prm, false)
+}
+
+func newDefaultObjectWriter(prm *Params, forECPlacement bool) transformer.ObjectWriter {
+	var relay func(context.Context, NodeDescriptor) error
+	if prm.Relay != nil {
+		relay = func(ctx context.Context, node NodeDescriptor) error {
+			var info client.NodeInfo
+
+			client.NodeInfoFromNetmapElement(&info, node.Info)
+
+			c, err := prm.Config.ClientConstructor.Get(info)
+			if err != nil {
+				return fmt.Errorf("could not create SDK client %s: %w", info.AddressGroup(), err)
+			}
+
+			return prm.Relay(ctx, info, c)
+		}
+	}
+
+	var resetSuccessAfterOnBroadcast bool
+	traverseOpts := prm.TraverseOpts
+	if forECPlacement && !prm.Common.LocalOnly() {
+		// save non-regular and linking object to EC container.
+		// EC 2.1 -> REP 2, EC 2.2 -> REP 3 etc.
+		traverseOpts = append(traverseOpts, placement.SuccessAfter(uint32(policy.ECParityCount(prm.Container.PlacementPolicy())+1)))
+		resetSuccessAfterOnBroadcast = true
+	}
+
+	return &distributedWriter{
+		cfg:                          prm.Config,
+		placementOpts:                traverseOpts,
+		resetSuccessAfterOnBroadcast: resetSuccessAfterOnBroadcast,
+		nodeTargetInitializer: func(node NodeDescriptor) preparedObjectTarget {
+			if node.Local {
+				return LocalTarget{
+					Storage: prm.Config.LocalStore,
+				}
+			}
+
+			rt := &remoteWriter{
+				privateKey:        prm.SignRequestPrivateKey,
+				commonPrm:         prm.Common,
+				clientConstructor: prm.Config.ClientConstructor,
+			}
+
+			client.NodeInfoFromNetmapElement(&rt.nodeInfo, node.Info)
+
+			return rt
+		},
+		relay: relay,
+	}
+}
+
+func newECWriter(prm *Params) transformer.ObjectWriter {
+	return &objectWriterDispatcher{
+		ecWriter: &ECWriter{
+			Config:        prm.Config,
+			PlacementOpts: append(prm.TraverseOpts, placement.WithCopyNumbers(nil)), // copies number ignored for EC
+			Container:     prm.Container,
+			Key:           prm.SignRequestPrivateKey,
+			CommonPrm:     prm.Common,
+			Relay:         prm.Relay,
+		},
+		repWriter: newDefaultObjectWriter(prm, true),
+	}
+}

pkg/services/object/patch/service.go

@@ -2,43 +2,40 @@ package patchsvc
 
 import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
-	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
 )
 
 // Service implements Put operation of Object service v2.
 type Service struct {
-	keyStorage *util.KeyStorage
+	*objectwriter.Config
 
 	getSvc *getsvc.Service
-
-	putSvc *putsvc.Service
 }
 
 // NewService constructs Service instance from provided options.
-func NewService(ks *util.KeyStorage, getSvc *getsvc.Service, putSvc *putsvc.Service) *Service {
+//
+// Patch service can use the same objectwriter.Config initializied by Put service.
+func NewService(cfg *objectwriter.Config,
+	getSvc *getsvc.Service,
+) *Service {
 	return &Service{
-		keyStorage: ks,
+		Config: cfg,
 
 		getSvc: getSvc,
-
-		putSvc: putSvc,
 	}
 }
 
 // Put calls internal service and returns v2 object streamer.
 func (s *Service) Patch() (object.PatchObjectStream, error) {
-	nodeKey, err := s.keyStorage.GetKey(nil)
+	nodeKey, err := s.Config.KeyStorage.GetKey(nil)
 	if err != nil {
 		return nil, err
 	}
 
 	return &Streamer{
-		getSvc: s.getSvc,
+		Config:       s.Config,
-
+		getSvc:       s.getSvc,
-		putSvc: s.putSvc,
-
 		localNodeKey: nodeKey,
 	}, nil
 }

pkg/services/object/patch/streamer.go

@@ -9,8 +9,9 @@ import (
 
 	objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
 	refsV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/target"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
-	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
@@ -21,6 +22,8 @@ import (
 // Streamer for the patch handler is a pipeline that merges two incoming streams of patches
 // and original object payload chunks. The merged result is fed to Put stream target.
 type Streamer struct {
+	*objectwriter.Config
+
 	// Patcher must be initialized at first Streamer.Send call.
 	patcher patcher.PatchApplier
 
@@ -28,8 +31,6 @@ type Streamer struct {
 
 	getSvc *getsvc.Service
 
-	putSvc *putsvc.Service
-
 	localNodeKey *ecdsa.PrivateKey
 }
 
@@ -78,11 +79,6 @@ func (s *Streamer) init(ctx context.Context, req *objectV2.PatchRequest) error {
 		localNodeKey: s.localNodeKey,
 	}
 
-	putstm, err := s.putSvc.Put()
-	if err != nil {
-		return err
-	}
-
 	hdr := hdrWithSig.GetHeader()
 	oV2 := new(objectV2.Object)
 	hV2 := new(objectV2.Header)
@@ -97,14 +93,14 @@ func (s *Streamer) init(ctx context.Context, req *objectV2.PatchRequest) error {
 	}
 	oV2.GetHeader().SetOwnerID(ownerID)
 
-	prm, err := s.putInitPrm(req, oV2)
+	target, err := target.New(&objectwriter.Params{
+		Config:                s.Config,
+		Common:                commonPrm,
+		Header:                objectSDK.NewFromV2(oV2),
+		SignRequestPrivateKey: s.localNodeKey,
+	})
 	if err != nil {
-		return err
+		return fmt.Errorf("target creation: %w", err)
-	}
-
-	err = putstm.Init(ctx, prm)
-	if err != nil {
-		return err
 	}
 
 	patcherPrm := patcher.Params{
@@ -112,7 +108,7 @@ func (s *Streamer) init(ctx context.Context, req *objectV2.PatchRequest) error {
 
 		RangeProvider: rangeProvider,
 
-		ObjectWriter: putstm.Target(),
+		ObjectWriter: target,
 	}
 
 	s.patcher = patcher.New(patcherPrm)

pkg/services/object/patch/util.go

@@ -6,31 +6,12 @@ import (
 	"errors"
 	"fmt"
 
-	objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
-	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
-	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 )
 
-// putInitPrm initializes put paramerer for Put stream.
-func (s *Streamer) putInitPrm(req *objectV2.PatchRequest, obj *objectV2.Object) (*putsvc.PutInitPrm, error) {
-	commonPrm, err := util.CommonPrmFromV2(req)
-	if err != nil {
-		return nil, err
-	}
-
-	prm := new(putsvc.PutInitPrm)
-	prm.WithObject(objectSDK.NewFromV2(obj)).
-		WithCommonPrm(commonPrm).
-		WithPrivateKey(s.localNodeKey)
-
-	return prm, nil
-}
-
 func newOwnerID(vh *session.RequestVerificationHeader) (*refs.OwnerID, error) {
 	for vh.GetOrigin() != nil {
 		vh = vh.GetOrigin()

pkg/services/object/put/service.go

@@ -1,132 +1,66 @@
 package putsvc
 
 import (
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	objutil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"go.uber.org/zap"
 )
 
-type MaxSizeSource interface {
-	// MaxObjectSize returns maximum payload size
-	// of physically stored object in system.
-	//
-	// Must return 0 if value can not be obtained.
-	MaxObjectSize() uint64
-}
-
 type Service struct {
-	*cfg
+	*objectwriter.Config
-}
-
-type Option func(*cfg)
-
-type ClientConstructor interface {
-	Get(client.NodeInfo) (client.MultiAddressClient, error)
-}
-
-type InnerRing interface {
-	InnerRingKeys() ([][]byte, error)
-}
-
-type FormatValidatorConfig interface {
-	VerifySessionTokenIssuer() bool
-}
-
-type cfg struct {
-	keyStorage *objutil.KeyStorage
-
-	maxSizeSrc MaxSizeSource
-
-	localStore ObjectStorage
-
-	cnrSrc container.Source
-
-	netMapSrc netmap.Source
-
-	remotePool, localPool util.WorkerPool
-
-	netmapKeys netmap.AnnouncedKeys
-
-	fmtValidator *object.FormatValidator
-
-	networkState netmap.State
-
-	clientConstructor ClientConstructor
-
-	log *logger.Logger
-
-	verifySessionTokenIssuer bool
 }
 
 func NewService(ks *objutil.KeyStorage,
-	cc ClientConstructor,
+	cc objectwriter.ClientConstructor,
-	ms MaxSizeSource,
+	ms objectwriter.MaxSizeSource,
-	os ObjectStorage,
+	os objectwriter.ObjectStorage,
 	cs container.Source,
 	ns netmap.Source,
 	nk netmap.AnnouncedKeys,
 	nst netmap.State,
-	ir InnerRing,
+	ir objectwriter.InnerRing,
-	opts ...Option,
+	opts ...objectwriter.Option,
 ) *Service {
-	c := &cfg{
+	c := &objectwriter.Config{
-		remotePool:        util.NewPseudoWorkerPool(),
+		RemotePool:        util.NewPseudoWorkerPool(),
-		localPool:         util.NewPseudoWorkerPool(),
+		LocalPool:         util.NewPseudoWorkerPool(),
-		log:               &logger.Logger{Logger: zap.L()},
+		Logger:            &logger.Logger{Logger: zap.L()},
-		keyStorage:        ks,
+		KeyStorage:        ks,
-		clientConstructor: cc,
+		ClientConstructor: cc,
-		maxSizeSrc:        ms,
+		MaxSizeSrc:        ms,
-		localStore:        os,
+		LocalStore:        os,
-		cnrSrc:            cs,
+		ContainerSource:   cs,
-		netMapSrc:         ns,
+		NetmapSource:      ns,
-		netmapKeys:        nk,
+		NetmapKeys:        nk,
-		networkState:      nst,
+		NetworkState:      nst,
 	}
 
 	for i := range opts {
 		opts[i](c)
 	}
 
-	c.fmtValidator = object.NewFormatValidator(
+	c.FormatValidator = object.NewFormatValidator(
 		object.WithLockSource(os),
 		object.WithNetState(nst),
 		object.WithInnerRing(ir),
 		object.WithNetmapSource(ns),
 		object.WithContainersSource(cs),
-		object.WithVerifySessionTokenIssuer(c.verifySessionTokenIssuer),
+		object.WithVerifySessionTokenIssuer(c.VerifySessionTokenIssuer),
-		object.WithLogger(c.log),
+		object.WithLogger(c.Logger),
 	)
 
 	return &Service{
-		cfg: c,
+		Config: c,
 	}
 }
 
 func (p *Service) Put() (*Streamer, error) {
 	return &Streamer{
-		cfg: p.cfg,
+		Config: p.Config,
 	}, nil
 }
-
-func WithWorkerPools(remote, local util.WorkerPool) Option {
-	return func(c *cfg) {
-		c.remotePool, c.localPool = remote, local
-	}
-}
-
-func WithLogger(l *logger.Logger) Option {
-	return func(c *cfg) {
-		c.log = l
-	}
-}
-
-func WithVerifySessionTokenIssuer(v bool) Option {
-	return func(c *cfg) {
-		c.verifySessionTokenIssuer = v
-	}
-}

pkg/services/object/put/single.go

@@ -21,6 +21,8 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/policy"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/target"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/internal"
 	svcutil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
@@ -97,12 +99,12 @@ func (s *Service) validatePutSingle(ctx context.Context, obj *objectSDK.Object)
 
 func (s *Service) validarePutSingleSize(obj *objectSDK.Object) error {
 	if uint64(len(obj.Payload())) != obj.PayloadSize() {
-		return ErrWrongPayloadSize
+		return target.ErrWrongPayloadSize
 	}
 
-	maxAllowedSize := s.maxSizeSrc.MaxObjectSize()
+	maxAllowedSize := s.Config.MaxSizeSrc.MaxObjectSize()
 	if obj.PayloadSize() > maxAllowedSize {
-		return ErrExceedingMaxSize
+		return target.ErrExceedingMaxSize
 	}
 
 	return nil
@@ -137,11 +139,11 @@ func (s *Service) validatePutSingleChecksum(obj *objectSDK.Object) error {
 }
 
 func (s *Service) validatePutSingleObject(ctx context.Context, obj *objectSDK.Object) (object.ContentMeta, error) {
-	if err := s.fmtValidator.Validate(ctx, obj, false); err != nil {
+	if err := s.FormatValidator.Validate(ctx, obj, false); err != nil {
 		return object.ContentMeta{}, fmt.Errorf("coud not validate object format: %w", err)
 	}
 
-	meta, err := s.fmtValidator.ValidateContent(obj)
+	meta, err := s.FormatValidator.ValidateContent(obj)
 	if err != nil {
 		return object.ContentMeta{}, fmt.Errorf("could not validate payload content: %w", err)
 	}
@@ -164,17 +166,17 @@ func (s *Service) saveToNodes(ctx context.Context, obj *objectSDK.Object, req *o
 }
 
 func (s *Service) saveToREPReplicas(ctx context.Context, placement putSinglePlacement, obj *objectSDK.Object, localOnly bool, req *objectAPI.PutSingleRequest, meta object.ContentMeta) error {
-	iter := s.cfg.newNodeIterator(placement.placementOptions)
+	iter := s.Config.NewNodeIterator(placement.placementOptions)
-	iter.extraBroadcastEnabled = needAdditionalBroadcast(obj, localOnly)
+	iter.ExtraBroadcastEnabled = objectwriter.NeedAdditionalBroadcast(obj, localOnly)
-	iter.resetSuccessAfterOnBroadcast = placement.resetSuccessAfterOnBroadcast
+	iter.ResetSuccessAfterOnBroadcast = placement.resetSuccessAfterOnBroadcast
 
 	signer := &putSingleRequestSigner{
 		req:        req,
-		keyStorage: s.keyStorage,
+		keyStorage: s.Config.KeyStorage,
 		signer:     &sync.Once{},
 	}
 
-	return iter.forEachNode(ctx, func(ctx context.Context, nd nodeDesc) error {
+	return iter.ForEachNode(ctx, func(ctx context.Context, nd objectwriter.NodeDescriptor) error {
 		return s.saveToPlacementNode(ctx, &nd, obj, signer, meta)
 	})
 }
@@ -184,25 +186,25 @@ func (s *Service) saveToECReplicas(ctx context.Context, placement putSinglePlace
 	if err != nil {
 		return err
 	}
-	key, err := s.cfg.keyStorage.GetKey(nil)
+	key, err := s.Config.KeyStorage.GetKey(nil)
 	if err != nil {
 		return err
 	}
 	signer := &putSingleRequestSigner{
 		req:        req,
-		keyStorage: s.keyStorage,
+		keyStorage: s.Config.KeyStorage,
 		signer:     &sync.Once{},
 	}
 
-	w := ecWriter{
+	w := objectwriter.ECWriter{
-		cfg:           s.cfg,
+		Config:          s.Config,
-		placementOpts: placement.placementOptions,
+		PlacementOpts:   placement.placementOptions,
-		objMeta:       meta,
+		ObjectMeta:      meta,
-		objMetaValid:  true,
+		ObjectMetaValid: true,
-		commonPrm:     commonPrm,
+		CommonPrm:       commonPrm,
-		container:     placement.container,
+		Container:       placement.container,
-		key:           key,
+		Key:             key,
-		relay: func(ctx context.Context, ni client.NodeInfo, mac client.MultiAddressClient) error {
+		Relay: func(ctx context.Context, ni client.NodeInfo, mac client.MultiAddressClient) error {
 			return s.redirectPutSingleRequest(ctx, signer, obj, ni, mac)
 		},
 	}
@@ -223,7 +225,7 @@ func (s *Service) getPutSinglePlacementOptions(obj *objectSDK.Object, copiesNumb
 	if !ok {
 		return result, errors.New("missing container ID")
 	}
-	cnrInfo, err := s.cnrSrc.Get(cnrID)
+	cnrInfo, err := s.Config.ContainerSource.Get(cnrID)
 	if err != nil {
 		return result, fmt.Errorf("could not get container by ID: %w", err)
 	}
@@ -247,31 +249,31 @@ func (s *Service) getPutSinglePlacementOptions(obj *objectSDK.Object, copiesNumb
 	}
 	result.placementOptions = append(result.placementOptions, placement.ForObject(objID))
 
-	latestNetmap, err := netmap.GetLatestNetworkMap(s.netMapSrc)
+	latestNetmap, err := netmap.GetLatestNetworkMap(s.Config.NetmapSource)
 	if err != nil {
 		return result, fmt.Errorf("could not get latest network map: %w", err)
 	}
 	builder := placement.NewNetworkMapBuilder(latestNetmap)
 	if localOnly {
 		result.placementOptions = append(result.placementOptions, placement.SuccessAfter(1))
-		builder = svcutil.NewLocalPlacement(builder, s.netmapKeys)
+		builder = svcutil.NewLocalPlacement(builder, s.Config.NetmapKeys)
 	}
 	result.placementOptions = append(result.placementOptions, placement.UseBuilder(builder))
 	return result, nil
 }
 
-func (s *Service) saveToPlacementNode(ctx context.Context, nodeDesc *nodeDesc, obj *objectSDK.Object,
+func (s *Service) saveToPlacementNode(ctx context.Context, nodeDesc *objectwriter.NodeDescriptor, obj *objectSDK.Object,
 	signer *putSingleRequestSigner, meta object.ContentMeta,
 ) error {
-	if nodeDesc.local {
+	if nodeDesc.Local {
 		return s.saveLocal(ctx, obj, meta)
 	}
 
 	var info client.NodeInfo
 
-	client.NodeInfoFromNetmapElement(&info, nodeDesc.info)
+	client.NodeInfoFromNetmapElement(&info, nodeDesc.Info)
 
-	c, err := s.clientConstructor.Get(info)
+	c, err := s.Config.ClientConstructor.Get(info)
 	if err != nil {
 		return fmt.Errorf("could not create SDK client %s: %w", info.AddressGroup(), err)
 	}
@@ -280,8 +282,8 @@ func (s *Service) saveToPlacementNode(ctx context.Context, nodeDesc *nodeDesc, o
 }
 
 func (s *Service) saveLocal(ctx context.Context, obj *objectSDK.Object, meta object.ContentMeta) error {
-	localTarget := &localTarget{
+	localTarget := &objectwriter.LocalTarget{
-		storage: s.localStore,
+		Storage: s.Config.LocalStore,
 	}
 	return localTarget.WriteObject(ctx, obj, meta)
 }
@@ -314,7 +316,7 @@ func (s *Service) redirectPutSingleRequest(ctx context.Context,
 			if err != nil {
 				objID, _ := obj.ID()
 				cnrID, _ := obj.ContainerID()
-				s.log.Warn(logs.PutSingleRedirectFailure,
+				s.Config.Logger.Warn(logs.PutSingleRedirectFailure,
 					zap.Error(err),
 					zap.Stringer("address", addr),
 					zap.Stringer("object_id", objID),

pkg/services/object/put/streamer.go

@@ -2,33 +2,21 @@ package putsvc
 
 import (
 	"context"
-	"crypto/ecdsa"
 	"errors"
 	"fmt"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/target"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/policy"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
-	pkgutil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
-	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/transformer"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 )
 
 type Streamer struct {
-	*cfg
+	*objectwriter.Config
-
-	privateKey *ecdsa.PrivateKey
 
 	target transformer.ChunkedObjectWriter
 
 	relay func(context.Context, client.NodeInfo, client.MultiAddressClient) error
-
-	maxPayloadSz uint64 // network config
 }
 
 var errNotInit = errors.New("stream not initialized")
@@ -36,8 +24,23 @@ var errNotInit = errors.New("stream not initialized")
 var errInitRecall = errors.New("init recall")
 
 func (p *Streamer) Init(ctx context.Context, prm *PutInitPrm) error {
+	if p.target != nil {
+		return errInitRecall
+	}
+
 	// initialize destination target
-	if err := p.initTarget(prm); err != nil {
+	prmTarget := &objectwriter.Params{
+		Config:       p.Config,
+		Common:       prm.common,
+		Header:       prm.hdr,
+		Container:    prm.cnr,
+		TraverseOpts: prm.traverseOpts,
+		Relay:        p.relay,
+	}
+
+	var err error
+	p.target, err = target.New(prmTarget)
+	if err != nil {
 		return fmt.Errorf("(%T) could not initialize object target: %w", p, err)
 	}
 
@@ -47,253 +50,6 @@ func (p *Streamer) Init(ctx context.Context, prm *PutInitPrm) error {
 	return nil
 }
 
-// Target accesses underlying target chunked object writer.
-func (p *Streamer) Target() transformer.ChunkedObjectWriter {
-	return p.target
-}
-
-// MaxObjectSize returns maximum payload size for the streaming session.
-//
-// Must be called after the successful Init.
-func (p *Streamer) MaxObjectSize() uint64 {
-	return p.maxPayloadSz
-}
-
-func (p *Streamer) initTarget(prm *PutInitPrm) error {
-	// prevent re-calling
-	if p.target != nil {
-		return errInitRecall
-	}
-
-	// prepare needed put parameters
-	if err := p.preparePrm(prm); err != nil {
-		return fmt.Errorf("(%T) could not prepare put parameters: %w", p, err)
-	}
-
-	p.maxPayloadSz = p.maxSizeSrc.MaxObjectSize()
-	if p.maxPayloadSz == 0 {
-		return fmt.Errorf("(%T) could not obtain max object size parameter", p)
-	}
-
-	if prm.hdr.Signature() != nil {
-		return p.initUntrustedTarget(prm)
-	}
-	return p.initTrustedTarget(prm)
-}
-
-func (p *Streamer) initUntrustedTarget(prm *PutInitPrm) error {
-	p.relay = prm.relay
-
-	if prm.privateKey != nil {
-		p.privateKey = prm.privateKey
-	} else {
-		nodeKey, err := p.cfg.keyStorage.GetKey(nil)
-		if err != nil {
-			return err
-		}
-		p.privateKey = nodeKey
-	}
-
-	// prepare untrusted-Put object target
-	p.target = &validatingPreparedTarget{
-		nextTarget: newInMemoryObjectBuilder(p.newObjectWriter(prm)),
-		fmt:        p.fmtValidator,
-
-		maxPayloadSz: p.maxPayloadSz,
-	}
-
-	return nil
-}
-
-func (p *Streamer) initTrustedTarget(prm *PutInitPrm) error {
-	sToken := prm.common.SessionToken()
-
-	// prepare trusted-Put object target
-
-	// get private token from local storage
-	var sessionInfo *util.SessionInfo
-
-	if sToken != nil {
-		sessionInfo = &util.SessionInfo{
-			ID:    sToken.ID(),
-			Owner: sToken.Issuer(),
-		}
-	}
-
-	key, err := p.keyStorage.GetKey(sessionInfo)
-	if err != nil {
-		return fmt.Errorf("(%T) could not receive session key: %w", p, err)
-	}
-
-	// In case session token is missing, the line above returns the default key.
-	// If it isn't owner key, replication attempts will fail, thus this check.
-	ownerObj := prm.hdr.OwnerID()
-	if ownerObj.IsEmpty() {
-		return errors.New("missing object owner")
-	}
-
-	if sToken == nil {
-		var ownerSession user.ID
-		user.IDFromKey(&ownerSession, key.PublicKey)
-
-		if !ownerObj.Equals(ownerSession) {
-			return fmt.Errorf("(%T) session token is missing but object owner id is different from the default key", p)
-		}
-	} else {
-		if !ownerObj.Equals(sessionInfo.Owner) {
-			return fmt.Errorf("(%T) different token issuer and object owner identifiers %s/%s", p, sessionInfo.Owner, ownerObj)
-		}
-	}
-
-	if prm.privateKey != nil {
-		p.privateKey = prm.privateKey
-	} else {
-		p.privateKey = key
-	}
-	p.target = &validatingTarget{
-		fmt: p.fmtValidator,
-		nextTarget: transformer.NewPayloadSizeLimiter(transformer.Params{
-			Key:                    key,
-			NextTargetInit:         func() transformer.ObjectWriter { return p.newObjectWriter(prm) },
-			NetworkState:           p.networkState,
-			MaxSize:                p.maxPayloadSz,
-			WithoutHomomorphicHash: containerSDK.IsHomomorphicHashingDisabled(prm.cnr),
-			SessionToken:           sToken,
-		}),
-	}
-
-	return nil
-}
-
-func (p *Streamer) preparePrm(prm *PutInitPrm) error {
-	var err error
-
-	// get latest network map
-	nm, err := netmap.GetLatestNetworkMap(p.netMapSrc)
-	if err != nil {
-		return fmt.Errorf("(%T) could not get latest network map: %w", p, err)
-	}
-
-	idCnr, ok := prm.hdr.ContainerID()
-	if !ok {
-		return errors.New("missing container ID")
-	}
-
-	// get container to store the object
-	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(prm.cnr),
-	)
-
-	if ech := prm.hdr.ECHeader(); ech != nil {
-		prm.traverseOpts = append(prm.traverseOpts,
-			// set identifier of the processing object
-			placement.ForObject(ech.Parent()),
-		)
-	} else if id, ok := prm.hdr.ID(); ok {
-		prm.traverseOpts = append(prm.traverseOpts,
-			// set identifier of the processing object
-			placement.ForObject(id),
-		)
-	}
-
-	// create placement builder from network map
-	builder := placement.NewNetworkMapBuilder(nm)
-
-	if prm.common.LocalOnly() {
-		// restrict success count to 1 stored copy (to local storage)
-		prm.traverseOpts = append(prm.traverseOpts, placement.SuccessAfter(1))
-
-		// use local-only placement builder
-		builder = util.NewLocalPlacement(builder, p.netmapKeys)
-	}
-
-	// set placement builder
-	prm.traverseOpts = append(prm.traverseOpts, placement.UseBuilder(builder))
-
-	return nil
-}
-
-func (p *Streamer) newObjectWriter(prm *PutInitPrm) transformer.ObjectWriter {
-	if container.IsECContainer(prm.cnr) && object.IsECSupported(prm.hdr) {
-		return p.newECWriter(prm)
-	}
-	return p.newDefaultObjectWriter(prm, false)
-}
-
-func (p *Streamer) newDefaultObjectWriter(prm *PutInitPrm, forECPlacement bool) transformer.ObjectWriter {
-	var relay func(context.Context, nodeDesc) error
-	if p.relay != nil {
-		relay = func(ctx context.Context, node nodeDesc) error {
-			var info client.NodeInfo
-
-			client.NodeInfoFromNetmapElement(&info, node.info)
-
-			c, err := p.clientConstructor.Get(info)
-			if err != nil {
-				return fmt.Errorf("could not create SDK client %s: %w", info.AddressGroup(), err)
-			}
-
-			return p.relay(ctx, info, c)
-		}
-	}
-
-	var resetSuccessAfterOnBroadcast bool
-	traverseOpts := prm.traverseOpts
-	if forECPlacement && !prm.common.LocalOnly() {
-		// save non-regular and linking object to EC container.
-		// EC 2.1 -> REP 2, EC 2.2 -> REP 3 etc.
-		traverseOpts = append(traverseOpts, placement.SuccessAfter(uint32(policy.ECParityCount(prm.cnr.PlacementPolicy())+1)))
-		resetSuccessAfterOnBroadcast = true
-	}
-
-	return &distributedTarget{
-		cfg:                          p.cfg,
-		placementOpts:                traverseOpts,
-		resetSuccessAfterOnBroadcast: resetSuccessAfterOnBroadcast,
-		nodeTargetInitializer: func(node nodeDesc) preparedObjectTarget {
-			if node.local {
-				return localTarget{
-					storage: p.localStore,
-				}
-			}
-
-			rt := &remoteTarget{
-				privateKey:        p.privateKey,
-				commonPrm:         prm.common,
-				clientConstructor: p.clientConstructor,
-			}
-
-			client.NodeInfoFromNetmapElement(&rt.nodeInfo, node.info)
-
-			return rt
-		},
-		relay: relay,
-	}
-}
-
-func (p *Streamer) newECWriter(prm *PutInitPrm) transformer.ObjectWriter {
-	return &objectWriterDispatcher{
-		ecWriter: &ecWriter{
-			cfg:           p.cfg,
-			placementOpts: append(prm.traverseOpts, placement.WithCopyNumbers(nil)), // copies number ignored for EC
-			container:     prm.cnr,
-			key:           p.privateKey,
-			commonPrm:     prm.common,
-			relay:         p.relay,
-		},
-		repWriter: p.newDefaultObjectWriter(prm, true),
-	}
-}
-
 func (p *Streamer) SendChunk(ctx context.Context, prm *PutChunkPrm) error {
 	if p.target == nil {
 		return errNotInit
@@ -327,10 +83,3 @@ func (p *Streamer) Close(ctx context.Context) (*PutResponse, error) {
 		id: ids.SelfID,
 	}, nil
 }
-
-func (c *cfg) getWorkerPool(pub []byte) (pkgutil.WorkerPool, bool) {
-	if c.netmapKeys.IsLocalKey(pub) {
-		return c.localPool, true
-	}
-	return c.remotePool, false
-}

pkg/services/object/put/v2/streamer.go

@@ -11,6 +11,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/signature"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/target"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/internal"
 	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/internal/client"
 	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
@@ -55,7 +56,7 @@ func (s *streamer) Send(ctx context.Context, req *object.PutRequest) (err error)
 
 		s.saveChunks = v.GetSignature() != nil
 		if s.saveChunks {
-			maxSz := s.stream.MaxObjectSize()
+			maxSz := s.stream.MaxSizeSrc.MaxObjectSize()
 
 			s.sizes = &sizes{
 				payloadSz: uint64(v.GetHeader().GetPayloadLength()),
@@ -63,7 +64,7 @@ func (s *streamer) Send(ctx context.Context, req *object.PutRequest) (err error)
 
 			// check payload size limit overflow
 			if s.payloadSz > maxSz {
-				return putsvc.ErrExceedingMaxSize
+				return target.ErrExceedingMaxSize
 			}
 
 			s.init = req
@@ -74,7 +75,7 @@ func (s *streamer) Send(ctx context.Context, req *object.PutRequest) (err error)
 
 			// check payload size overflow
 			if s.writtenPayload > s.payloadSz {
-				return putsvc.ErrWrongPayloadSize
+				return target.ErrWrongPayloadSize
 			}
 		}
 
@@ -117,7 +118,7 @@ func (s *streamer) CloseAndRecv(ctx context.Context) (*object.PutResponse, error
 	if s.saveChunks {
 		// check payload size correctness
 		if s.writtenPayload != s.payloadSz {
-			return nil, putsvc.ErrWrongPayloadSize
+			return nil, target.ErrWrongPayloadSize
 		}
 	}
 

pkg/services/replicator/process.go

@@ -5,7 +5,7 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
-	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	tracingPkg "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
@@ -52,7 +52,7 @@ func (p *Replicator) HandleReplicationTask(ctx context.Context, task Task, res T
 		}
 	}
 
-	prm := new(putsvc.RemotePutPrm).
+	prm := new(objectwriter.RemotePutPrm).
 		WithObject(task.Obj)
 
 	for i := 0; task.NumCopies > 0 && i < len(task.Nodes); i++ {

pkg/services/replicator/replicator.go

@@ -4,8 +4,8 @@ import (
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
+	objectwriter "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/common/writer"
 	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
-	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"go.uber.org/zap"
 )
@@ -24,7 +24,7 @@ type cfg struct {
 
 	log *logger.Logger
 
-	remoteSender *putsvc.RemoteSender
+	remoteSender *objectwriter.RemoteSender
 
 	remoteGetter *getsvc.RemoteGetter
 
@@ -67,7 +67,7 @@ func WithLogger(v *logger.Logger) Option {
 }
 
 // WithRemoteSender returns option to set remote object sender of Replicator.
-func WithRemoteSender(v *putsvc.RemoteSender) Option {
+func WithRemoteSender(v *objectwriter.RemoteSender) Option {
 	return func(c *cfg) {
 		c.remoteSender = v
 	}