frostfs-api-go/subnet/info.go
Evgenii Stratonikov 94f068e462 *: remove error from StableMarshal return values
We marshal only in-memory structures, no error is expected.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2022-04-21 15:07:57 +03:00

138 lines
3.1 KiB
Go

package subnet
import (
"github.com/nspcc-dev/neofs-api-go/v2/refs"
refsgrpc "github.com/nspcc-dev/neofs-api-go/v2/refs/grpc"
"github.com/nspcc-dev/neofs-api-go/v2/rpc/grpc"
"github.com/nspcc-dev/neofs-api-go/v2/rpc/message"
subnet "github.com/nspcc-dev/neofs-api-go/v2/subnet/grpc"
protoutil "github.com/nspcc-dev/neofs-api-go/v2/util/proto"
)
// Info represents information about NeoFS subnet. Structure is compatible with NeoFS API V2 protocol.
//
// Zero value represents zero subnet w/o an owner.
type Info struct {
id *refs.SubnetID
owner *refs.OwnerID
}
// ID returns identifier of the subnet. Nil return is equivalent to zero subnet ID.
func (x *Info) ID() *refs.SubnetID {
return x.id
}
// SetID returns identifier of the subnet. Nil arg is equivalent to zero subnet ID.
func (x *Info) SetID(id *refs.SubnetID) {
x.id = id
}
// Owner returns subnet owner's ID in NeoFS system.
func (x *Info) Owner() *refs.OwnerID {
return x.owner
}
// SetOwner sets subnet owner's ID in NeoFS system.
func (x *Info) SetOwner(id *refs.OwnerID) {
x.owner = id
}
// ToGRPCMessage forms subnet.SubnetInfo message and returns it as grpc.Message.
func (x *Info) ToGRPCMessage() grpc.Message {
var m *subnet.SubnetInfo
if x != nil {
m = new(subnet.SubnetInfo)
m.SetID(x.id.ToGRPCMessage().(*refsgrpc.SubnetID))
m.SetOwner(x.owner.ToGRPCMessage().(*refsgrpc.OwnerID))
}
return m
}
// FromGRPCMessage restores Info from grpc.Message.
//
// Supported types:
// * subnet.SubnetInfo.
func (x *Info) FromGRPCMessage(m grpc.Message) error {
v, ok := m.(*subnet.SubnetInfo)
if !ok {
return message.NewUnexpectedMessageType(m, v)
}
var err error
id := v.GetId()
if id == nil {
x.id = nil
} else {
if x.id == nil {
x.id = new(refs.SubnetID)
}
err = x.id.FromGRPCMessage(id)
if err != nil {
return err
}
}
ownerID := v.GetOwner()
if ownerID == nil {
x.owner = nil
} else {
if x.owner == nil {
x.owner = new(refs.OwnerID)
}
err = x.owner.FromGRPCMessage(ownerID)
if err != nil {
return err
}
}
return nil
}
// SubnetInfo message field numbers
const (
_ = iota
subnetInfoIDFNum
subnetInfoOwnerFNum
)
// StableMarshal marshals Info to NeoFS API V2 binary format (Protocol Buffers with direct field order).
//
// Returns a slice of recorded data. Data is written to the provided buffer if there is enough space.
func (x *Info) StableMarshal(buf []byte) []byte {
if x == nil {
return []byte{}
}
if buf == nil {
buf = make([]byte, x.StableSize())
}
var offset int
offset += protoutil.NestedStructureMarshal(subnetInfoIDFNum, buf[offset:], x.id)
protoutil.NestedStructureMarshal(subnetInfoOwnerFNum, buf[offset:], x.owner)
return buf
}
// StableSize returns the number of bytes required to write Info in NeoFS API V2 binary format (see StableMarshal).
func (x *Info) StableSize() (size int) {
if x != nil {
size += protoutil.NestedStructureSize(subnetInfoIDFNum, x.id)
size += protoutil.NestedStructureSize(subnetInfoOwnerFNum, x.owner)
}
return
}
// Unmarshal decodes Info from NeoFS API V2 binary format (see StableMarshal).
func (x *Info) Unmarshal(data []byte) error {
return message.Unmarshal(x, data, new(subnet.SubnetInfo))
}