ec21040542
In previous implementation parent object header finalized twice in size limiter + formatter. On the one hand, this added redundant action, on the other hand, it could provoke a difference in the headers of the linking and the last part. Change formatter to finalize parent header if it does not container the signature. Change size limiter to reuse parent header after last child finalization in linking child. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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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// WithParentID 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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