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[#33] container: Define read-only storage interface

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Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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Leonard Lyubich 2020-09-21 13:07:12 +03:00 committed by Alex Vanin
parent d52bdb27c5
commit 030375af63
1 changed files with 24 additions and 0 deletions
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24
pkg/core/container/storage.go Normal file
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package container
import (
"errors"
"github.com/nspcc-dev/neofs-api-go/pkg/container"
)
// Source is an interface that wraps
// basic container receiving method.
type Source interface {
// Get reads the container from the storage by identifier.
// It returns the pointer to requested container and any error encountered.
//
// Get must return exactly one non-nil value.
// Get must return ErrNotFound if the container is not in storage.
//
// Implementations must not retain the container pointer and modify
// the container through it.
Get(*container.ID) (*container.Container, error)
}
// ErrNotFound is the error returned when container was not found in storage.
var ErrNotFound = errors.New("container not found")