[#140] apistatus: Support session errors

Define `SessionTokenNotFound`/`SessionTokenExpired` types for
`TOKEN_NOT_FOUND`/`TOKEN_EXPIRED` codes.

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

client/status/session.go

@@ -0,0 +1,66 @@
+package apistatus
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/v2/session"
+	"github.com/nspcc-dev/neofs-api-go/v2/status"
+)
+
+// SessionTokenNotFound describes status of the failure because of the missing session token.
+// Instances provide Status and StatusV2 interfaces.
+type SessionTokenNotFound struct {
+	v2 status.Status
+}
+
+func (x SessionTokenNotFound) Error() string {
+	return errMessageStatusV2(
+		globalizeCodeV2(session.StatusTokenNotFound, session.GlobalizeFail),
+		x.v2.Message(),
+	)
+}
+
+// implements local interface defined in FromStatusV2 func.
+func (x *SessionTokenNotFound) fromStatusV2(st *status.Status) {
+	x.v2 = *st
+}
+
+// ToStatusV2 implements StatusV2 interface method.
+// If the value was returned by FromStatusV2, returns the source message.
+// Otherwise, returns message with
+//  * code: TOKEN_NOT_FOUND;
+//  * string message: "session token not found";
+//  * details: empty.
+func (x SessionTokenNotFound) ToStatusV2() *status.Status {
+	x.v2.SetCode(globalizeCodeV2(session.StatusTokenNotFound, session.GlobalizeFail))
+	x.v2.SetMessage("session token not found")
+	return &x.v2
+}
+
+// SessionTokenExpired describes status of the failure because of the expired session token.
+// Instances provide Status and StatusV2 interfaces.
+type SessionTokenExpired struct {
+	v2 status.Status
+}
+
+func (x SessionTokenExpired) Error() string {
+	return errMessageStatusV2(
+		globalizeCodeV2(session.StatusTokenExpired, session.GlobalizeFail),
+		x.v2.Message(),
+	)
+}
+
+// implements local interface defined in FromStatusV2 func.
+func (x *SessionTokenExpired) fromStatusV2(st *status.Status) {
+	x.v2 = *st
+}
+
+// ToStatusV2 implements StatusV2 interface method.
+// If the value was returned by FromStatusV2, returns the source message.
+// Otherwise, returns message with
+//  * code: TOKEN_EXPIRED;
+//  * string message: "expired session token";
+//  * details: empty.
+func (x SessionTokenExpired) ToStatusV2() *status.Status {
+	x.v2.SetCode(globalizeCodeV2(session.StatusTokenExpired, session.GlobalizeFail))
+	x.v2.SetMessage("expired session token")
+	return &x.v2
+}

client/status/v2.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/nspcc-dev/neofs-api-go/v2/container"
 	"github.com/nspcc-dev/neofs-api-go/v2/object"
+	"github.com/nspcc-dev/neofs-api-go/v2/session"
 	"github.com/nspcc-dev/neofs-api-go/v2/status"
 )
 
@@ -74,6 +75,14 @@ func FromStatusV2(st *status.Status) Status {
 		case container.StatusNotFound:
 			decoder = new(ContainerNotFound)
 		}
+	case session.LocalizeFailStatus(&code):
+		//nolint:exhaustive
+		switch code {
+		case session.StatusTokenNotFound:
+			decoder = new(SessionTokenNotFound)
+		case session.StatusTokenExpired:
+			decoder = new(SessionTokenExpired)
+		}
 	}
 
 	if decoder == nil {

client/status/v2_test.go

@@ -99,6 +99,18 @@ func TestToStatusV2(t *testing.T) {
 			}),
 			codeV2: 3072,
 		},
+		{
+			status: (statusConstructor)(func() apistatus.Status {
+				return new(apistatus.SessionTokenNotFound)
+			}),
+			codeV2: 4096,
+		},
+		{
+			status: (statusConstructor)(func() apistatus.Status {
+				return new(apistatus.SessionTokenExpired)
+			}),
+			codeV2: 4097,
+		},
 	} {
 		var st apistatus.Status
 
@@ -217,6 +229,18 @@ func TestFromStatusV2(t *testing.T) {
 			}),
 			codeV2: 3072,
 		},
+		{
+			status: (statusConstructor)(func() apistatus.Status {
+				return new(apistatus.SessionTokenNotFound)
+			}),
+			codeV2: 4096,
+		},
+		{
+			status: (statusConstructor)(func() apistatus.Status {
+				return new(apistatus.SessionTokenExpired)
+			}),
+			codeV2: 4097,
+		},
 	} {
 		var st apistatus.Status