[#505] morph/container: Change get container API

Make `Get` method of the wrapper over Container contract's client to
accept binary container ID. Create `Get` function similar to the previous
`Get` variation. Use this function in Container service server in the place
where `Get` method was used.

Additionally implement `AsContainerSource` function which allows
to simply compose container Source interface from the wrapper.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

cmd/neofs-node/container.go

@@ -42,7 +42,9 @@ func initContainerService(c *cfg) {
 	wrap, err := wrapper.NewFromMorph(c.cfgMorph.client, c.cfgContainer.scriptHash, 0)
 	fatalOnErr(err)
 
-	c.cfgObject.cnrStorage = newCachedContainerStorage(wrap) // use RPC node as source of containers (with caching)
+	cnrSrc := wrapper.AsContainerSource(wrap)
+
+	c.cfgObject.cnrStorage = newCachedContainerStorage(cnrSrc) // use RPC node as source of containers (with caching)
 	c.cfgObject.cnrClient = wrap
 
 	localMetrics := &localStorageLoad{
@@ -63,7 +65,7 @@ func initContainerService(c *cfg) {
 	loadPlacementBuilder := &loadPlacementBuilder{
 		log:    c.log,
 		nmSrc:  c.cfgNetmap.wrapper,
-		cnrSrc: wrap,
+		cnrSrc: cnrSrc,
 	}
 
 	routeBuilder := placementrouter.New(placementrouter.Prm{

pkg/innerring/innerring.go

@@ -436,7 +436,7 @@ func New(ctx context.Context, log *zap.Logger, cfg *viper.Viper) (*Server, error
 	settlementDeps := &settlementDeps{
 		globalConfig:   globalConfig,
 		log:            server.log,
-		cnrSrc:         cnrClient,
+		cnrSrc:         cntWrapper.AsContainerSource(cnrClient),
 		auditClient:    server.auditClient,
 		nmSrc:          nmClient,
 		clientCache:    clientCache,

pkg/innerring/processors/audit/process.go

@@ -7,6 +7,7 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/nspcc-dev/neofs-node/pkg/morph/client/container/wrapper"
 	"github.com/nspcc-dev/neofs-node/pkg/network"
 	"github.com/nspcc-dev/neofs-node/pkg/services/audit"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/storagegroup"
@@ -49,7 +50,7 @@ func (ap *Processor) processStartAudit(epoch uint64) {
 	auditCtx, ap.prevAuditCanceler = context.WithCancel(context.Background())
 
 	for i := range containers {
-		cnr, err := ap.containerClient.Get(containers[i]) // get container structure
+		cnr, err := wrapper.Get(ap.containerClient, containers[i]) // get container structure
 		if err != nil {
 			log.Error("can't get container info, ignore",
 				zap.Stringer("cid", containers[i]),

pkg/innerring/processors/container/process_eacl.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
+	"github.com/nspcc-dev/neofs-node/pkg/morph/client/container/wrapper"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/event/container"
 	"go.uber.org/zap"
 )
@@ -58,7 +59,7 @@ func (cp *Processor) checkEACLOwnership(binTable []byte, key *keys.PublicKey) er
 	}
 
 	// receive owner of the related container
-	cnr, err := cp.cnrClient.Get(table.CID())
+	cnr, err := wrapper.Get(cp.cnrClient, table.CID())
 	if err != nil {
 		return fmt.Errorf("could not receive the container: %w", err)
 	}

pkg/morph/client/container/wrapper/container.go

@@ -67,24 +67,34 @@ func (w *Wrapper) Put(cnr, key, sig []byte) error {
 	return nil
 }
 
-// Get reads the container from NeoFS system by identifier
+type containerSource Wrapper
+
+func (x *containerSource) Get(cid *container.ID) (*container.Container, error) {
+	return Get((*Wrapper)(x), cid)
+}
+
+// AsContainerSource provides container Source interface
+// from Wrapper instance.
+func AsContainerSource(w *Wrapper) core.Source {
+	return (*containerSource)(w)
+}
+
+// Get marshals container ID, and passes it to Wrapper's Get method.
+//
+// Returns error if cid is nil.
+func Get(w *Wrapper, cid *container.ID) (*container.Container, error) {
+	return w.Get(cid.ToV2().GetValue())
+}
+
+// Get reads the container from NeoFS system by binary identifier
 // through Container contract call.
 //
 // If an empty slice is returned for the requested identifier,
 // storage.ErrNotFound error is returned.
-func (w *Wrapper) Get(cid *container.ID) (*container.Container, error) {
-	if cid == nil {
-		return nil, errNilArgument
-	}
+func (w *Wrapper) Get(cid []byte) (*container.Container, error) {
+	var args client.GetArgs
 
-	args := client.GetArgs{}
-
-	v2 := cid.ToV2()
-	if v2 == nil {
-		return nil, errUnsupported // use other major version if there any
-	}
-
-	args.SetCID(v2.GetValue())
+	args.SetCID(cid)
 
 	// ask RPC neo node to get serialized container
 	rpcAnswer, err := w.client.Get(args)

pkg/services/container/morph/executor.go

@@ -58,7 +58,7 @@ func (s *morphExecutor) Delete(ctx context.Context, body *container.DeleteReques
 func (s *morphExecutor) Get(ctx context.Context, body *container.GetRequestBody) (*container.GetResponseBody, error) {
 	cid := containerSDK.NewIDFromV2(body.GetContainerID())
 
-	cnr, err := s.wrapper.Get(cid)
+	cnr, err := wrapper.Get(s.wrapper, cid)
 	if err != nil {
 		return nil, err
 	}