[#265] pkg/reputation: Implement PeerID and Trust types

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

pkg/reputation/trust.go

@@ -0,0 +1,95 @@
+package reputation
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/v2/reputation"
+)
+
+// Trust represents peer's trust compatible with NeoFS API v2.
+type Trust reputation.Trust
+
+// NewTrust creates and returns blank Trust.
+func NewTrust() *Trust {
+	return TrustFromV2(new(reputation.Trust))
+}
+
+// TrustFromV2 converts NeoFS API v2
+// reputation.Trust message structure to Trust.
+func TrustFromV2(t *reputation.Trust) *Trust {
+	return (*Trust)(t)
+}
+
+// ToV2 converts Trust to NeoFS API v2
+// reputation.Trust message structure.
+func (x *Trust) ToV2() *reputation.Trust {
+	return (*reputation.Trust)(x)
+}
+
+// TrustsToV2 converts slice of Trust's to slice of
+// NeoFS API v2 reputation.Trust message structures.
+func TrustsToV2(xs []*Trust) (res []*reputation.Trust) {
+	if xs != nil {
+		res = make([]*reputation.Trust, 0, len(xs))
+
+		for i := range xs {
+			res = append(res, xs[i].ToV2())
+		}
+	}
+
+	return
+}
+
+// SetPeer sets trusted peer ID.
+func (x *Trust) SetPeer(id *PeerID) {
+	(*reputation.Trust)(x).
+		SetPeer(id.ToV2())
+}
+
+// Peer returns trusted peer ID.
+func (x *Trust) Peer() *PeerID {
+	return PeerIDFromV2(
+		(*reputation.Trust)(x).GetPeer(),
+	)
+}
+
+// SetValue sets trust value.
+func (x *Trust) SetValue(val float64) {
+	(*reputation.Trust)(x).
+		SetValue(val)
+}
+
+// Value returns trust value.
+func (x *Trust) Value() float64 {
+	return (*reputation.Trust)(x).
+		GetValue()
+}
+
+// Marshal marshals Trust into a protobuf binary form.
+//
+// Buffer is allocated when the argument is empty.
+// Otherwise, the first buffer is used.
+func (x *Trust) Marshal(b ...[]byte) ([]byte, error) {
+	var buf []byte
+	if len(b) > 0 {
+		buf = b[0]
+	}
+
+	return (*reputation.Trust)(x).StableMarshal(buf)
+}
+
+// Unmarshal unmarshals protobuf binary representation of Trust.
+func (x *Trust) Unmarshal(data []byte) error {
+	return (*reputation.Trust)(x).
+		Unmarshal(data)
+}
+
+// MarshalJSON encodes Trust to protobuf JSON format.
+func (x *Trust) MarshalJSON() ([]byte, error) {
+	return (*reputation.Trust)(x).
+		MarshalJSON()
+}
+
+// UnmarshalJSON decodes Trust from protobuf JSON format.
+func (x *Trust) UnmarshalJSON(data []byte) error {
+	return (*reputation.Trust)(x).
+		UnmarshalJSON(data)
+}