container

type Container struct {
	// Container structure.
	Value container.Container

	// Signature of the Value.
	Signature frostfscrypto.Signature

	// Session within which Value was created. Nil means session absence.
	Session *session.Container
}

type DelInfo struct {
	// Container owner.
	Owner user.ID

	// Epoch indicates when the container was removed.
	Epoch uint64
}

type EACL struct {
	// Extended ACL structure.
	Value *eacl.Table

	// Signature of the Value.
	Signature frostfscrypto.Signature

	// Session within which Value was set. Nil means session absence.
	Session *session.Container
}

type EACLSource interface {
	// GetEACL reads the table from the source by identifier.
	// It returns any error encountered.
	//
	// GetEACL must return exactly one non-nil value.
	//
	// Must return apistatus.ErrEACLNotFound if requested
	// eACL table is not in source.
	GetEACL(cid.ID) (*EACL, error)
}

type RemovalWitness struct {
	// ContainerID returns the identifier of the container
	// to be removed.
	ContainerID cid.ID

	// Signature the signature of the container identifier.
	Signature *refs.Signature

	// SessionToken the token of the session within
	// which the container was removed.
	SessionToken *session.Container
}

type Source interface {
	// Get reads the container from the storage by its identifier.
	// It returns the pointer to the requested container and any error encountered.
	//
	// Get must return exactly one non-nil value.
	// Get must return an error of type apistatus.ContainerNotFound if the container is not in the storage.
	//
	// Implementations must not retain the container pointer and modify
	// the container through it.
	Get(cid.ID) (*Container, error)

	DeletionInfo(cid.ID) (*DelInfo, error)
}