[#37] Implement container related morph wrapper functions

Container get wrapper implements container.Source interface
so it can be used in object service as container storage.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

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

@@ -1,20 +1,53 @@
 package wrapper
 
-// OwnerID represents the container owner identifier.
-// FIXME: correct the definition.
-type OwnerID struct{}
+import (
+	"crypto/sha256"
 
-// Container represents the NeoFS Container structure.
-// FIXME: correct the definition.
-type Container struct{}
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	v2container "github.com/nspcc-dev/neofs-api-go/v2/container"
+	msgContainer "github.com/nspcc-dev/neofs-api-go/v2/container/grpc"
+	v2refs "github.com/nspcc-dev/neofs-api-go/v2/refs"
+	msgRefs "github.com/nspcc-dev/neofs-api-go/v2/refs/grpc"
+	core "github.com/nspcc-dev/neofs-node/pkg/core/container"
+	client "github.com/nspcc-dev/neofs-node/pkg/morph/client/container"
+	"github.com/pkg/errors"
+)
+
+var (
+	errNilArgument = errors.New("empty argument")
+	errUnsupported = errors.New("unsupported structure version")
+)
 
 // Put saves passed container structure in NeoFS system
 // through Container contract call.
 //
 // Returns calculated container identifier and any error
 // encountered that caused the saving to interrupt.
-func (w *Wrapper) Put(cnr *Container) (*CID, error) {
-	panic("implement me")
+func (w *Wrapper) Put(cnr *container.Container, pubKey, signature []byte) (*container.ID, error) {
+	if cnr == nil || len(pubKey) == 0 || len(signature) == 0 {
+		return nil, errNilArgument
+	}
+
+	args := client.PutArgs{}
+	args.SetPublicKey(pubKey)
+	args.SetSignature(signature)
+
+	id := new(container.ID)
+
+	if v2 := cnr.ToV2(); v2 == nil {
+		return nil, errUnsupported // use other major version if there any
+	} else {
+		data, err := v2.StableMarshal(nil)
+		if err != nil {
+			return nil, errors.Wrap(err, "can't marshal container")
+		}
+
+		id.SetSHA256(sha256.Sum256(data))
+		args.SetContainer(data)
+	}
+
+	return id, w.client.Put(args)
 }
 
 // Get reads the container from NeoFS system by identifier
@@ -22,8 +55,37 @@ func (w *Wrapper) Put(cnr *Container) (*CID, error) {
 //
 // If an empty slice is returned for the requested identifier,
 // storage.ErrNotFound error is returned.
-func (w *Wrapper) Get(cid CID) (*Container, error) {
-	panic("implement me")
+func (w *Wrapper) Get(cid *container.ID) (*container.Container, error) {
+	if cid == nil {
+		return nil, errNilArgument
+	}
+
+	args := client.GetArgs{}
+
+	if v2 := cid.ToV2(); v2 == nil {
+		return nil, errUnsupported // use other major version if there any
+	} else {
+		args.SetCID(v2.GetValue())
+	}
+
+	// ask RPC neo node to get serialized container
+	rpcAnswer, err := w.client.Get(args)
+	if err != nil {
+		return nil, errors.Wrap(core.ErrNotFound, err.Error())
+	}
+
+	// convert serialized bytes into GRPC structure
+	grpcMsg := new(msgContainer.Container)
+	err = grpcMsg.Unmarshal(rpcAnswer.Container())
+	if err != nil {
+		// use other major version if there any
+		return nil, errors.Wrap(err, "can't unmarshal container")
+	}
+
+	// convert GRPC structure into SDK structure, used in the code
+	v2Cnr := v2container.ContainerFromGRPCMessage(grpcMsg)
+
+	return container.NewContainerFromV2(v2Cnr), nil
 }
 
 // Delete removes the container from NeoFS system
@@ -31,8 +93,21 @@ func (w *Wrapper) Get(cid CID) (*Container, error) {
 //
 // Returns any error encountered that caused
 // the removal to interrupt.
-func (w *Wrapper) Delete(cid CID) error {
-	panic("implement me")
+func (w *Wrapper) Delete(cid *container.ID, signature []byte) error {
+	if cid == nil || len(signature) == 0 {
+		return errNilArgument
+	}
+
+	args := client.DeleteArgs{}
+	args.SetSignature(signature)
+
+	if v2 := cid.ToV2(); v2 == nil {
+		return errUnsupported // use other major version if there any
+	} else {
+		args.SetCID(v2.GetValue())
+	}
+
+	return w.client.Delete(args)
 }
 
 // List returns a list of container identifiers belonging
@@ -41,6 +116,41 @@ func (w *Wrapper) Delete(cid CID) error {
 //
 // Returns the identifiers of all NeoFS containers if pointer
 // to owner identifier is nil.
-func (w *Wrapper) List(ownerID *OwnerID) ([]CID, error) {
-	panic("implement me")
+func (w *Wrapper) List(ownerID *owner.ID) ([]*container.ID, error) {
+	args := client.ListArgs{}
+
+	if ownerID == nil {
+		args.SetOwnerID([]byte{})
+	} else if v2 := ownerID.ToV2(); v2 == nil {
+		return nil, errUnsupported // use other major version if there any
+	} else {
+		args.SetOwnerID(v2.GetValue())
+	}
+
+	// ask RPC neo node to get serialized container
+	rpcAnswer, err := w.client.List(args)
+	if err != nil {
+		return nil, err
+	}
+
+	rawIDs := rpcAnswer.CIDList()
+	result := make([]*container.ID, 0, len(rawIDs))
+
+	for i := range rawIDs {
+		// convert serialized bytes into GRPC structure
+		grpcMsg := new(msgRefs.ContainerID)
+		err = grpcMsg.Unmarshal(rawIDs[i])
+		if err != nil {
+			// use other major version if there any
+			return nil, errors.Wrap(err, "can't unmarshal container id")
+		}
+
+		// convert GRPC structure into SDK structure, used in the code
+		v2 := v2refs.ContainerIDFromGRPCMessage(grpcMsg)
+		cid := container.NewIDFromV2(v2)
+
+		result = append(result, cid)
+	}
+
+	return result, nil
 }

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

@@ -10,10 +10,6 @@ import (
 // github.com/nspcc-dev/neofs-node/pkg/morph/client/container.Client.
 type Client = container.Client
 
-// CID represents the container identifier.
-// FIXME: correct the definition.
-type CID struct{}
-
 // Wrapper is a wrapper over container contract
 // client which implements container storage and
 // eACL storage methods.