[#189] sdk/netmap: Refactor Replica type

Replace alias to v2 type Replica with v2-compatible implementation.

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

pkg/netmap/policy.go

@@ -6,7 +6,6 @@ import (
 
 // fixme: make types instead of aliases to v2 structures
 type PlacementPolicy = netmap.PlacementPolicy
-type Replica = netmap.Replica
 
 func PlacementPolicyToJSON(p *PlacementPolicy) ([]byte, error) {
 	return netmap.PlacementPolicyToJSON(p)

pkg/netmap/replica.go

@@ -0,0 +1,47 @@
+package netmap
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/v2/netmap"
+)
+
+// Replica represents v2-compatible object replica descriptor.
+type Replica netmap.Replica
+
+// NewReplica creates and returns new Replica instance.
+func NewReplica() *Replica {
+	return NewReplicaFromV2(new(netmap.Replica))
+}
+
+// NewReplicaFromV2 converts v2 Replica to Replica.
+func NewReplicaFromV2(f *netmap.Replica) *Replica {
+	return (*Replica)(f)
+}
+
+// ToV2 converts Replica to v2 Replica.
+func (r *Replica) ToV2() *netmap.Replica {
+	return (*netmap.Replica)(r)
+}
+
+// Count returns number of object replicas.
+func (r *Replica) Count() uint32 {
+	return (*netmap.Replica)(r).
+		GetCount()
+}
+
+// SetCount sets number of object replicas.
+func (r *Replica) SetCount(c uint32) {
+	(*netmap.Replica)(r).
+		SetCount(c)
+}
+
+// Selector returns name of selector bucket to put replicas.
+func (r *Replica) Selector() string {
+	return (*netmap.Replica)(r).
+		GetSelector()
+}
+
+// SetSelector sets name of selector bucket to put replicas.
+func (r *Replica) SetSelector(s string) {
+	(*netmap.Replica)(r).
+		SetSelector(s)
+}

pkg/netmap/replica_test.go

@@ -0,0 +1,36 @@
+package netmap
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/netmap"
+	"github.com/stretchr/testify/require"
+)
+
+func TestReplicaFromV2(t *testing.T) {
+	rV2 := new(netmap.Replica)
+	rV2.SetCount(3)
+	rV2.SetSelector("selector")
+
+	r := NewReplicaFromV2(rV2)
+
+	require.Equal(t, rV2, r.ToV2())
+}
+
+func TestReplica_Count(t *testing.T) {
+	r := NewReplica()
+	c := uint32(3)
+
+	r.SetCount(c)
+
+	require.Equal(t, c, r.Count())
+}
+
+func TestReplica_Selector(t *testing.T) {
+	r := NewReplica()
+	s := "some selector"
+
+	r.SetSelector(s)
+
+	require.Equal(t, s, r.Selector())
+}