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[#1442] pilorama: Generate timestamp based on node position in the container

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Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-05-27 15:55:02 +03:00 • committed by fyrchik
parent 3caa982283
commit 4437cd7113
13 changed files with 333 additions and 169 deletions
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28
pkg/local_object_storage/pilorama/interface.go
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@ -1,19 +1,23 @@
package pilorama
import cidSDK "github.com/nspcc-dev/neofs-sdk-go/container/id"
import (
"errors"
cidSDK "github.com/nspcc-dev/neofs-sdk-go/container/id"
)
// Forest represents CRDT tree.
type Forest interface {
// TreeMove moves node in the tree.
// If the parent of the move operation is TrashID, the node is removed.
// If the child of the move operation is RootID, new ID is generated and added to a tree.
TreeMove(cid cidSDK.ID, treeID string, m *Move) (*LogMove, error)
TreeMove(d CIDDescriptor, treeID string, m *Move) (*LogMove, error)
// TreeAddByPath adds new node in the tree using provided path.
// The path is constructed by descending from the root using the values of the attr in meta.
// Internal nodes in path should have exactly one attribute, otherwise a new node is created.
TreeAddByPath(cid cidSDK.ID, treeID string, attr string, path []string, meta []KeyValue) ([]LogMove, error)
TreeAddByPath(d CIDDescriptor, treeID string, attr string, path []string, meta []KeyValue) ([]LogMove, error)
// TreeApply applies replicated operation from another node.
TreeApply(cid cidSDK.ID, treeID string, m *Move) error
TreeApply(d CIDDescriptor, treeID string, m *Move) error
// TreeGetByPath returns all nodes corresponding to the path.
// The path is constructed by descending from the root using the values of the
// AttributeFilename in meta.
@ -42,3 +46,19 @@ const (
AttributeFilename = "FileName"
AttributeVersion = "Version"
)
// CIDDescriptor contains container ID and information about the node position
// in the list of container nodes.
type CIDDescriptor struct {
CID cidSDK.ID
Position int
Size int
}
// ErrInvalidCIDDescriptor is returned when info about tne node position
// in the container is invalid.
var ErrInvalidCIDDescriptor = errors.New("cid descriptor is invalid")
func (d CIDDescriptor) checkValid() bool {
return 0 <= d.Position && d.Position < d.Size
}