frostfs-api-go/session/request.go

package session

import (
	"encoding/binary"
	"io"

	"github.com/nspcc-dev/neofs-api-go/refs"
	"github.com/nspcc-dev/neofs-api-go/service"
)

const signedRequestDataSize = 0 +
	refs.OwnerIDSize +
	8 +
	8

var requestEndianness = binary.BigEndian

// NewParams creates a new CreateRequest message and returns CreateParamsContainer interface.
func NewParams() CreateParamsContainer {
	return new(CreateRequest)
}

// GetOwnerID is an OwnerID field getter.
func (m CreateRequest) GetOwnerID() OwnerID {
	return m.OwnerID
}

// SetOwnerID is an OwnerID field setter.
func (m *CreateRequest) SetOwnerID(id OwnerID) {
	m.OwnerID = id
}

// SignedData returns payload bytes of the request.
func (m CreateRequest) SignedData() ([]byte, error) {
	return service.SignedDataFromReader(m)
}

// SignedDataSize returns payload size of the request.
func (m CreateRequest) SignedDataSize() int {
	return signedRequestDataSize
}

// ReadSignedData copies payload bytes to passed buffer.
//
// If the buffer size is insufficient, io.ErrUnexpectedEOF returns.
func (m CreateRequest) ReadSignedData(p []byte) (int, error) {
	sz := m.SignedDataSize()
	if len(p) < sz {
		return 0, io.ErrUnexpectedEOF
	}

	var off int

	off += copy(p[off:], m.GetOwnerID().Bytes())

	requestEndianness.PutUint64(p[off:], m.CreationEpoch())
	off += 8

	requestEndianness.PutUint64(p[off:], m.ExpirationEpoch())

	return sz, nil
}