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[#429] Refactor tree service

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Signed-off-by: Angira Kekteeva <kira@nspcc.ru>
This commit is contained in:
Angira Kekteeva 2022-05-12 04:48:17 +03:00 committed by Alex Vanin
parent dace32760a
commit b03ae827fb
3 changed files with 90 additions and 66 deletions
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2
api/layer/system_object.go
View file

@ -254,7 +254,7 @@ func (n *layer) GetBucketSettings(ctx context.Context, bktInfo *data.BucketInfo)
settings, err := n.treeService.GetSettingsNode(ctx, &bktInfo.CID, "version")
if err != nil {
if !errorsStd.Is(err, ErrNotFound) {
if !errorsStd.Is(err, ErrNodeNotFound) {
return nil, err
}
settings = &data.BucketSettings{}

6
api/layer/tree_service.go
View file

@ -15,9 +15,9 @@ type TreeService interface {
// GetSettingsNode retrieves the settings node from the tree service and form data.BucketSettings.
//
// If node is not found returns ErrNotFound error.
// If node is not found returns ErrNodeNotFound error.
GetSettingsNode(context.Context, *cid.ID, string) (*data.BucketSettings, error)
}
// ErrNotFound is returned from Tree service in case of not found error.
var ErrNotFound = errors.New("not found")
// ErrNodeNotFound is returned from Tree service in case of not found error.
var ErrNodeNotFound = errors.New("not found")

140
internal/neofs/tree.go
View file

@ -11,23 +11,29 @@ import (
"github.com/nspcc-dev/neofs-s3-gw/api/layer"
"github.com/nspcc-dev/neofs-s3-gw/internal/neofs/services/tree"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)
type TreeClient struct {
type (
TreeClient struct {
conn *grpc.ClientConn
service tree.TreeServiceClient
}
type Node struct {
id uint64
meta map[string]string
TreeNode struct {
ID uint64
ObjID *oid.ID
TimeStamp uint64
Meta map[string]string
}
)
const (
versioningEnabledKV = "versioning_enabled"
lockConfigurationKV = "lock_configuration"
oidKv = "OID"
fileNameKV = "FileName"
systemNameKV = "SystemName"
@ -49,36 +55,39 @@ func NewTreeClient(addr string) (*TreeClient, error) {
}, nil
}
func newNode(nodeInfo *tree.GetNodeByPathResponse_Info) *Node {
func newTreeNode(nodeInfo *tree.GetNodeByPathResponse_Info) (*TreeNode, error) {
var objID *oid.ID
meta := make(map[string]string, len(nodeInfo.GetMeta()))
for _, kv := range nodeInfo.GetMeta() {
if kv.GetKey() == oidKv {
objID = new(oid.ID)
err := objID.DecodeString(string(kv.GetValue()))
if err != nil {
return nil, err
}
continue
}
meta[kv.GetKey()] = string(kv.GetValue())
}
return &Node{
id: nodeInfo.GetNodeId(),
meta: meta,
}
return &TreeNode{
ID: nodeInfo.GetNodeId(),
ObjID: objID,
TimeStamp: nodeInfo.Timestamp,
Meta: meta,
}, nil
}
func (n *Node) ID() uint64 {
return n.id
}
func (n *Node) Meta() map[string]string {
return n.meta
}
func (n *Node) Get(key string) (string, bool) {
value, ok := n.meta[key]
func (n *TreeNode) Get(key string) (string, bool) {
value, ok := n.Meta[key]
return value, ok
}
func (c *TreeClient) GetSettingsNode(ctx context.Context, cnrID *cid.ID, treeID string) (*data.BucketSettings, error) {
keysToReturn := []string{versioningEnabledKV, lockConfigurationKV}
path := []string{settingsFileName}
node, err := c.getSystemNode(ctx, cnrID, treeID, path, keysToReturn)
node, err := c.getSystemNode(ctx, cnrID, treeID, settingsFileName, keysToReturn)
if err != nil {
return nil, fmt.Errorf("couldn't get node: %w", err)
}
@ -101,9 +110,8 @@ func (c *TreeClient) GetSettingsNode(ctx context.Context, cnrID *cid.ID, treeID
}
func (c *TreeClient) PutSettingsNode(ctx context.Context, cnrID *cid.ID, treeID string, settings *data.BucketSettings) error {
path := []string{settingsFileName}
node, err := c.getSystemNode(ctx, cnrID, treeID, path, []string{})
isErrNotFound := errors.Is(err, layer.ErrNotFound)
node, err := c.getSystemNode(ctx, cnrID, treeID, settingsFileName, []string{})
isErrNotFound := errors.Is(err, layer.ErrNodeNotFound)
if err != nil && !isErrNotFound {
return fmt.Errorf("couldn't get node: %w", err)
}
@ -115,7 +123,7 @@ func (c *TreeClient) PutSettingsNode(ctx context.Context, cnrID *cid.ID, treeID
return err
}
return c.moveNode(ctx, cnrID, treeID, node.ID(), 0, meta)
return c.moveNode(ctx, cnrID, treeID, node.ID, 0, meta)
}
func (c *TreeClient) Close() error {
@ -136,49 +144,66 @@ func metaFromSettings(settings *data.BucketSettings) map[string]string {
return results
}
func (c *TreeClient) getSystemNode(ctx context.Context, cnrID *cid.ID, treeID string, path, meta []string) (*Node, error) {
return c.getNode(ctx, cnrID, treeID, systemNameKV, path, meta)
}
func (c *TreeClient) getRegularNode(ctx context.Context, cnrID *cid.ID, treeID string, path, meta []string) (*Node, error) {
return c.getNode(ctx, cnrID, treeID, fileNameKV, path, meta)
}
func (c *TreeClient) getNode(ctx context.Context, cnrID *cid.ID, treeID, pathAttr string, path, meta []string) (*Node, error) {
nodes, err := c.getNodes(ctx, cnrID, treeID, pathAttr, path, meta)
if err != nil {
if strings.Contains(err.Error(), "not found") {
return nil, layer.ErrNotFound
}
return nil, fmt.Errorf("couldn't get nodes: %w", err)
}
if len(nodes) == 0 {
return nil, layer.ErrNotFound
}
if len(nodes) != 1 {
return nil, fmt.Errorf("found more than one node")
}
return newNode(nodes[0]), nil
}
func (c *TreeClient) getNodes(ctx context.Context, cnrID *cid.ID, treeID, pathAttr string, path, meta []string) ([]*tree.GetNodeByPathResponse_Info, error) {
func (c *TreeClient) getSystemNode(ctx context.Context, cnrID *cid.ID, treeID, path string, meta []string) (*TreeNode, error) {
request := &tree.GetNodeByPathRequest{
Body: &tree.GetNodeByPathRequest_Body{
ContainerId: []byte(cnrID.EncodeToString()),
TreeId: treeID,
Path: path,
Path: []string{path},
Attributes: meta,
PathAttribute: pathAttr,
PathAttribute: systemNameKV,
},
}
resp, err := c.service.GetNodeByPath(ctx, request)
if err != nil {
if strings.Contains(err.Error(), "not found") {
return nil, layer.ErrNodeNotFound
}
return nil, fmt.Errorf("couldn't get nodes: %w", err)
}
if len(resp.Body.GetNodes()) == 0 {
return nil, layer.ErrNodeNotFound
}
if len(resp.Body.GetNodes()) != 1 {
return nil, fmt.Errorf("found more than one node")
}
return newTreeNode(resp.Body.Nodes[0])
}
func (c *TreeClient) getSystemNodesWithOID(ctx context.Context, cnrID *cid.ID, treeID, path string, meta []string, latestOnly bool) ([]*TreeNode, error) {
meta = append(meta, oidKv)
r := &tree.GetNodeByPathRequest{
Body: &tree.GetNodeByPathRequest_Body{
ContainerId: []byte(cnrID.EncodeToString()),
TreeId: treeID,
PathAttribute: systemNameKV,
Path: []string{path},
Attributes: meta,
LatestOnly: latestOnly,
AllAttributes: false,
},
}
resp, err := c.service.GetNodeByPath(ctx, request)
resp, err := c.service.GetNodeByPath(ctx, r)
if err != nil {
return nil, fmt.Errorf("failed to get node path: %w", err)
if strings.Contains(err.Error(), "not found") {
return nil, layer.ErrNodeNotFound
}
return nil, err
}
return resp.GetBody().GetNodes(), nil
nodes := make([]*TreeNode, 0, len(resp.Body.Nodes))
for _, n := range resp.Body.GetNodes() {
node, err := newTreeNode(n)
if err != nil {
}
nodes = append(nodes, node)
}
return nodes, nil
}
func (c *TreeClient) addNode(ctx context.Context, cnrID *cid.ID, treeID string, parent uint64, meta map[string]string) (uint64, error) {
@ -212,7 +237,6 @@ func (c *TreeClient) moveNode(ctx context.Context, cnrID *cid.ID, treeID string,
_, err := c.service.Move(ctx, request)
return err
}
func metaToKV(meta map[string]string) []*tree.KeyValue {