113 lines
2.6 KiB
Go
113 lines
2.6 KiB
Go
package transformer
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import (
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"io"
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objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
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"github.com/nspcc-dev/neofs-node/pkg/core/object"
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)
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// AccessIdentifiers represents group of the object identifiers
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// that are returned after writing the object.
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// Consists of the ID of the stored object and the ID of the parent object.
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type AccessIdentifiers struct {
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par, self *objectSDK.ID
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parHdr *objectSDK.Object
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}
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// ObjectTarget is an interface of the object writer.
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type ObjectTarget interface {
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// WriteHeader writes object header w/ payload part.
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// The payload of the object may be incomplete.
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//
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// Must be called exactly once. Control remains with the caller.
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// Missing a call or re-calling can lead to undefined behavior
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// that depends on the implementation.
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//
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// Must not be called after Close call.
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WriteHeader(*object.RawObject) error
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// Write writes object payload chunk.
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//
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// Can be called multiple times.
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//
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// Must not be called after Close call.
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io.Writer
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// Close is used to finish object writing.
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//
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// Close must return access identifiers of the object
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// that has been written.
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//
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// Must be called no more than once. Control remains with the caller.
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// Re-calling can lead to undefined behavior
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// that depends on the implementation.
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Close() (*AccessIdentifiers, error)
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}
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// TargetInitializer represents ObjectTarget constructor.
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type TargetInitializer func() ObjectTarget
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// SelfID returns identifier of the written object.
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func (a *AccessIdentifiers) SelfID() *objectSDK.ID {
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if a != nil {
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return a.self
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}
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return nil
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}
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// WithSelfID returns AccessIdentifiers with passed self identifier.
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func (a *AccessIdentifiers) WithSelfID(v *objectSDK.ID) *AccessIdentifiers {
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res := a
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if res == nil {
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res = new(AccessIdentifiers)
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}
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res.self = v
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return res
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}
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// ParentID return identifier of the parent of the written object.
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func (a *AccessIdentifiers) ParentID() *objectSDK.ID {
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if a != nil {
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return a.par
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}
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return nil
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}
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// WithParentID returns AccessIdentifiers with passed parent identifier.
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func (a *AccessIdentifiers) WithParentID(v *objectSDK.ID) *AccessIdentifiers {
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res := a
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if res == nil {
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res = new(AccessIdentifiers)
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}
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res.par = v
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return res
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}
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// Parent return identifier of the parent of the written object.
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func (a *AccessIdentifiers) Parent() *objectSDK.Object {
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if a != nil {
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return a.parHdr
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}
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return nil
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}
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// WithParent returns AccessIdentifiers with passed parent identifier.
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func (a *AccessIdentifiers) WithParent(v *objectSDK.Object) *AccessIdentifiers {
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res := a
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if res == nil {
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res = new(AccessIdentifiers)
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}
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res.parHdr = v
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return res
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}
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