frostfs-sdk-go/object/address/address.go

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package address
import (
"errors"
"fmt"
"strings"
"github.com/nspcc-dev/neofs-api-go/v2/refs"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
)
// Address represents v2-compatible object address.
type Address refs.Address
var errInvalidAddressString = errors.New("incorrect format of the string object address")
const (
addressParts = 2
addressSeparator = "/"
)
// NewAddressFromV2 converts v2 Address message to Address.
//
// Nil refs.Address converts to nil.
func NewAddressFromV2(aV2 *refs.Address) *Address {
return (*Address)(aV2)
}
// NewAddress creates and initializes blank Address.
//
// Works similar as NewAddressFromV2(new(Address)).
//
// Defaults:
// - cid: nil;
// - oid: nil.
func NewAddress() *Address {
return NewAddressFromV2(new(refs.Address))
}
// ToV2 converts Address to v2 Address message.
//
// Nil Address converts to nil.
func (a *Address) ToV2() *refs.Address {
return (*refs.Address)(a)
}
// ContainerID returns container identifier.
func (a *Address) ContainerID() (v cid.ID, isSet bool) {
v2 := (*refs.Address)(a)
cidV2 := v2.GetContainerID()
if cidV2 != nil {
_ = v.ReadFromV2(*cidV2)
isSet = true
}
return
}
// SetContainerID sets container identifier.
func (a *Address) SetContainerID(id cid.ID) {
var cidV2 refs.ContainerID
id.WriteToV2(&cidV2)
(*refs.Address)(a).SetContainerID(&cidV2)
}
// ObjectID returns object identifier.
func (a *Address) ObjectID() (v oid.ID, isSet bool) {
v2 := (*refs.Address)(a)
oidV2 := v2.GetObjectID()
if oidV2 != nil {
_ = v.ReadFromV2(*oidV2)
isSet = true
}
return
}
// SetObjectID sets object identifier.
func (a *Address) SetObjectID(id oid.ID) {
var oidV2 refs.ObjectID
id.WriteToV2(&oidV2)
(*refs.Address)(a).SetObjectID(&oidV2)
}
// Parse converts base58 string representation into Address.
func (a *Address) Parse(s string) error {
var (
err error
oid oid.ID
id cid.ID
parts = strings.Split(s, addressSeparator)
)
if len(parts) != addressParts {
return errInvalidAddressString
} else if err = id.DecodeString(parts[0]); err != nil {
return err
} else if err = oid.DecodeString(parts[1]); err != nil {
return err
}
a.SetObjectID(oid)
a.SetContainerID(id)
return nil
}
// String returns string representation of Object.Address.
func (a *Address) String() string {
var cidStr, oidStr string
if cID, set := a.ContainerID(); set {
cidStr = cID.String()
}
if oID, set := a.ObjectID(); set {
oidStr = oID.String()
}
return strings.Join([]string{cidStr, oidStr}, addressSeparator)
}
// Marshal marshals Address into a protobuf binary form.
func (a *Address) Marshal() ([]byte, error) {
return (*refs.Address)(a).StableMarshal(nil)
}
var errCIDNotSet = errors.New("container ID is not set")
var errOIDNotSet = errors.New("object ID is not set")
// Unmarshal unmarshals protobuf binary representation of Address.
func (a *Address) Unmarshal(data []byte) error {
err := (*refs.Address)(a).Unmarshal(data)
if err != nil {
return err
}
v2 := a.ToV2()
return checkFormat(v2)
}
// MarshalJSON encodes Address to protobuf JSON format.
func (a *Address) MarshalJSON() ([]byte, error) {
return (*refs.Address)(a).MarshalJSON()
}
// UnmarshalJSON decodes Address from protobuf JSON format.
func (a *Address) UnmarshalJSON(data []byte) error {
v2 := (*refs.Address)(a)
err := v2.UnmarshalJSON(data)
if err != nil {
return err
}
return checkFormat(v2)
}
func checkFormat(v2 *refs.Address) error {
var (
cID cid.ID
oID oid.ID
)
cidV2 := v2.GetContainerID()
if cidV2 == nil {
return errCIDNotSet
}
err := cID.ReadFromV2(*cidV2)
if err != nil {
return fmt.Errorf("could not convert V2 container ID: %w", err)
}
oidV2 := v2.GetObjectID()
if oidV2 == nil {
return errOIDNotSet
}
err = oID.ReadFromV2(*oidV2)
if err != nil {
return fmt.Errorf("could not convert V2 object ID: %w", err)
}
return nil
}