[#168] netmap: Implement binary and JSON encoders/decoders on Filter

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

v2/netmap/json.go

@@ -1,60 +1,126 @@
 package netmap
 
 import (
-	"errors"
-
 	netmap "github.com/nspcc-dev/neofs-api-go/v2/netmap/grpc"
 	"google.golang.org/protobuf/encoding/protojson"
 )
 
-var (
-	errEmptyInput = errors.New("empty input")
-)
-
-func NodeInfoToJSON(n *NodeInfo) ([]byte, error) {
-	if n == nil {
-		return nil, errEmptyInput
-	}
-
-	msg := NodeInfoToGRPCMessage(n)
-
-	return protojson.MarshalOptions{EmitUnpopulated: true}.Marshal(msg)
+func (p *PlacementPolicy) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		PlacementPolicyToGRPCMessage(p),
+	)
 }
 
-func NodeInfoFromJSON(data []byte) (*NodeInfo, error) {
-	if len(data) == 0 {
-		return nil, errEmptyInput
-	}
-
-	msg := new(netmap.NodeInfo)
-
-	if err := protojson.Unmarshal(data, msg); err != nil {
-		return nil, err
-	}
-
-	return NodeInfoFromGRPCMessage(msg), nil
-}
-
-func PlacementPolicyToJSON(n *PlacementPolicy) ([]byte, error) {
-	if n == nil {
-		return nil, errEmptyInput
-	}
-
-	msg := PlacementPolicyToGRPCMessage(n)
-
-	return protojson.MarshalOptions{EmitUnpopulated: true}.Marshal(msg)
-}
-
-func PlacementPolicyFromJSON(data []byte) (*PlacementPolicy, error) {
-	if len(data) == 0 {
-		return nil, errEmptyInput
-	}
-
+func (p *PlacementPolicy) UnmarshalJSON(data []byte) error {
 	msg := new(netmap.PlacementPolicy)
 
 	if err := protojson.Unmarshal(data, msg); err != nil {
-		return nil, err
+		return err
 	}
 
-	return PlacementPolicyFromGRPCMessage(msg), nil
+	*p = *PlacementPolicyFromGRPCMessage(msg)
+
+	return nil
+}
+
+func (f *Filter) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		FilterToGRPCMessage(f),
+	)
+}
+
+func (f *Filter) UnmarshalJSON(data []byte) error {
+	msg := new(netmap.Filter)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*f = *FilterFromGRPCMessage(msg)
+
+	return nil
+}
+
+func (s *Selector) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		SelectorToGRPCMessage(s),
+	)
+}
+
+func (s *Selector) UnmarshalJSON(data []byte) error {
+	msg := new(netmap.Selector)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*s = *SelectorFromGRPCMessage(msg)
+
+	return nil
+}
+
+func (r *Replica) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		ReplicaToGRPCMessage(r),
+	)
+}
+
+func (r *Replica) UnmarshalJSON(data []byte) error {
+	msg := new(netmap.Replica)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*r = *ReplicaFromGRPCMessage(msg)
+
+	return nil
+}
+
+func (a *Attribute) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		AttributeToGRPCMessage(a),
+	)
+}
+
+func (a *Attribute) UnmarshalJSON(data []byte) error {
+	msg := new(netmap.NodeInfo_Attribute)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*a = *AttributeFromGRPCMessage(msg)
+
+	return nil
+}
+
+func (ni *NodeInfo) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		NodeInfoToGRPCMessage(ni),
+	)
+}
+
+func (ni *NodeInfo) UnmarshalJSON(data []byte) error {
+	msg := new(netmap.NodeInfo)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*ni = *NodeInfoFromGRPCMessage(msg)
+
+	return nil
 }