91 lines
2.2 KiB
Go
91 lines
2.2 KiB
Go
package object
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import (
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objectgrpc "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object/grpc"
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"github.com/golang/protobuf/proto"
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"google.golang.org/protobuf/encoding/protojson"
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)
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// Attribute represents v2-compatible object attribute.
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type Attribute struct {
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attribute *objectgrpc.Header_Attribute
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}
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// NewAttributeFromV2 wraps v2 Attribute message to Attribute.
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//
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// Nil objectgrpc.Header_Attribute converts to nil.
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func NewAttributeFromV2(a *objectgrpc.Header_Attribute) *Attribute {
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if a == nil {
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return nil
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}
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attr := Attribute{
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attribute: &objectgrpc.Header_Attribute{},
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}
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proto.Merge(attr.attribute, a)
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return &attr
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}
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// NewAttribute creates and initializes blank Attribute.
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//
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// Works similar as NewAttributeFromV2(new(Attribute)).
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//
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// Defaults:
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// - key: "";
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// - value: "".
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func NewAttribute() *Attribute {
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return NewAttributeFromV2(new(objectgrpc.Header_Attribute))
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}
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// Key returns key to the object attribute.
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func (a *Attribute) GetKey() string {
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return a.attribute.GetKey()
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}
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// SetKey sets key to the object attribute.
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func (a *Attribute) SetKey(v string) {
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a.attribute.SetKey(v)
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}
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// Value return value of the object attribute.
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func (a *Attribute) GetValue() string {
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return a.attribute.GetValue()
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}
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// SetValue sets value of the object attribute.
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func (a *Attribute) SetValue(v string) {
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a.attribute.SetValue(v)
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}
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// ToV2 converts Attribute to v2 Attribute message.
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//
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// Nil Attribute converts to nil.
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func (a *Attribute) ToV2() *objectgrpc.Header_Attribute {
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if a == nil {
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return nil
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}
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return a.attribute
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}
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// Marshal marshals Attribute into a protobuf binary form.
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func (a *Attribute) Marshal() ([]byte, error) {
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return a.attribute.StableMarshal(nil), nil
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}
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// Unmarshal unmarshals protobuf binary representation of Attribute.
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func (a *Attribute) Unmarshal(data []byte) error {
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return proto.Unmarshal(data, a.attribute)
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}
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// MarshalJSON encodes Attribute to protobuf JSON format.
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func (a *Attribute) MarshalJSON() ([]byte, error) {
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return protojson.MarshalOptions{
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EmitUnpopulated: true,
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}.Marshal(
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a.attribute,
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)
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}
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// UnmarshalJSON decodes Attribute from protobuf JSON format.
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func (a *Attribute) UnmarshalJSON(data []byte) error {
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return protojson.Unmarshal(data, a.attribute)
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}
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