73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package object
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import (
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v2object "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/object"
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"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
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oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
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)
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// Lock represents record with locked objects. It is compatible with
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// FrostFS API V2 protocol.
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//
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// Lock instance can be written to the Object, see WriteLock/ReadLock.
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type Lock v2object.Lock
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// WriteLock writes Lock to the Object, and sets its type to TypeLock.
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// The object must not be nil.
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//
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// See also ReadLock.
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func WriteLock(obj *Object, l Lock) {
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obj.SetType(TypeLock)
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obj.SetPayload(l.Marshal())
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}
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// ReadLock reads Lock from the Object. The lock must not be nil.
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// Returns an error describing incorrect format. Makes sense only
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// if object has TypeLock type.
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//
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// See also WriteLock.
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func ReadLock(l *Lock, obj Object) error {
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return l.Unmarshal(obj.Payload())
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}
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// NumberOfMembers returns number of members in lock list.
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func (x Lock) NumberOfMembers() int {
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return (*v2object.Lock)(&x).NumberOfMembers()
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}
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// ReadMembers reads list of locked members.
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//
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// Buffer length must not be less than NumberOfMembers.
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func (x Lock) ReadMembers(buf []oid.ID) {
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var i int
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(*v2object.Lock)(&x).IterateMembers(func(idV2 refs.ObjectID) {
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_ = buf[i].ReadFromV2(idV2)
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i++
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})
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}
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// WriteMembers writes list of locked members.
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func (x *Lock) WriteMembers(ids []oid.ID) {
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var members []refs.ObjectID
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if ids != nil {
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members = make([]refs.ObjectID, len(ids))
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for i := range ids {
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ids[i].WriteToV2(&members[i])
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}
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}
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(*v2object.Lock)(x).SetMembers(members)
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}
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// Marshal encodes the Lock into a FrostFS protocol binary format.
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func (x Lock) Marshal() []byte {
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return (*v2object.Lock)(&x).StableMarshal(nil)
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}
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// Unmarshal decodes the Lock from its FrostFS protocol binary representation.
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func (x *Lock) Unmarshal(data []byte) error {
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return (*v2object.Lock)(x).Unmarshal(data)
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}
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