frostfs-s3-gw/pkg/service/tree/tree.go

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package tree
import (
"context"
"errors"
"fmt"
"io"
"sort"
"strconv"
"strings"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/middleware"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
"go.uber.org/zap"
)
type (
Tree struct {
service ServiceClient
log *zap.Logger
}
// ServiceClient is a client to interact with tree service.
// Each method must return ErrNodeNotFound or ErrNodeAccessDenied if relevant.
ServiceClient interface {
GetNodes(ctx context.Context, p *GetNodesParams) ([]NodeResponse, error)
GetSubTree(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID uint64, depth uint32) ([]NodeResponse, error)
GetSubTreeStream(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID uint64, depth uint32) (SubTreeStream, error)
AddNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, parent uint64, meta map[string]string) (uint64, error)
AddNodeByPath(ctx context.Context, bktInfo *data.BucketInfo, treeID string, path []string, meta map[string]string) (uint64, error)
MoveNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, nodeID, parentID uint64, meta map[string]string) error
RemoveNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, nodeID uint64) error
}
SubTreeStream interface {
Next() (NodeResponse, error)
}
treeNode struct {
ID uint64
ParentID uint64
ObjID oid.ID
TimeStamp uint64
Size uint64
Meta map[string]string
}
GetNodesParams struct {
BktInfo *data.BucketInfo
TreeID string
Path []string
Meta []string
LatestOnly bool
AllAttrs bool
}
)
const (
FileNameKey = "FileName"
)
var (
// ErrNodeNotFound is returned from ServiceClient in case of not found error.
ErrNodeNotFound = layer.ErrNodeNotFound
// ErrNodeAccessDenied is returned from ServiceClient service in case of access denied error.
ErrNodeAccessDenied = layer.ErrNodeAccessDenied
// ErrGatewayTimeout is returned from ServiceClient service in case of timeout error.
ErrGatewayTimeout = layer.ErrGatewayTimeout
)
const (
versioningKV = "Versioning"
lockConfigurationKV = "LockConfiguration"
oidKV = "OID"
isCombinedKV = "IsCombined"
isUnversionedKV = "IsUnversioned"
isTagKV = "IsTag"
uploadIDKV = "UploadId"
partNumberKV = "Number"
sizeKV = "Size"
etagKV = "ETag"
md5KV = "MD5"
finishedKV = "Finished"
// keys for lock.
isLockKV = "IsLock"
legalHoldOIDKV = "LegalHoldOID"
retentionOIDKV = "RetentionOID"
untilDateKV = "UntilDate"
isComplianceKV = "IsCompliance"
// keys for delete marker nodes.
isDeleteMarkerKV = "IsDeleteMarker"
ownerKV = "Owner"
createdKV = "Created"
settingsFileName = "bucket-settings"
notifConfFileName = "bucket-notifications"
corsFilename = "bucket-cors"
bucketTaggingFilename = "bucket-tagging"
// versionTree -- ID of a tree with object versions.
versionTree = "version"
// systemTree -- ID of a tree with system objects
// i.e. bucket settings with versioning and lock configuration, cors, notifications.
systemTree = "system"
separator = "/"
userDefinedTagPrefix = "User-Tag-"
maxGetSubTreeDepth = 0 // means all subTree
)
// NewTree creates instance of Tree using provided address and create grpc connection.
func NewTree(service ServiceClient, log *zap.Logger) *Tree {
return &Tree{
service: service,
log: log,
}
}
type Meta interface {
GetKey() string
GetValue() []byte
}
type NodeResponse interface {
GetMeta() []Meta
GetNodeID() uint64
GetParentID() uint64
GetTimestamp() uint64
}
func newTreeNode(nodeInfo NodeResponse) (*treeNode, error) {
treeNode := &treeNode{
ID: nodeInfo.GetNodeID(),
ParentID: nodeInfo.GetParentID(),
TimeStamp: nodeInfo.GetTimestamp(),
Meta: make(map[string]string, len(nodeInfo.GetMeta())),
}
for _, kv := range nodeInfo.GetMeta() {
switch kv.GetKey() {
case oidKV:
if err := treeNode.ObjID.DecodeString(string(kv.GetValue())); err != nil {
return nil, err
}
case sizeKV:
if sizeStr := string(kv.GetValue()); len(sizeStr) > 0 {
var err error
if treeNode.Size, err = strconv.ParseUint(sizeStr, 10, 64); err != nil {
return nil, fmt.Errorf("invalid size value '%s': %w", sizeStr, err)
}
}
default:
treeNode.Meta[kv.GetKey()] = string(kv.GetValue())
}
}
return treeNode, nil
}
func (n *treeNode) Get(key string) (string, bool) {
value, ok := n.Meta[key]
return value, ok
}
func (n *treeNode) FileName() (string, bool) {
value, ok := n.Meta[FileNameKey]
return value, ok
}
func newNodeVersion(filePath string, node NodeResponse) (*data.NodeVersion, error) {
treeNode, err := newTreeNode(node)
if err != nil {
return nil, fmt.Errorf("invalid tree node: %w", err)
}
return newNodeVersionFromTreeNode(filePath, treeNode), nil
}
func newNodeVersionFromTreeNode(filePath string, treeNode *treeNode) *data.NodeVersion {
_, isUnversioned := treeNode.Get(isUnversionedKV)
_, isDeleteMarker := treeNode.Get(isDeleteMarkerKV)
_, isCombined := treeNode.Get(isCombinedKV)
eTag, _ := treeNode.Get(etagKV)
md5, _ := treeNode.Get(md5KV)
version := &data.NodeVersion{
BaseNodeVersion: data.BaseNodeVersion{
ID: treeNode.ID,
ParenID: treeNode.ParentID,
OID: treeNode.ObjID,
Timestamp: treeNode.TimeStamp,
ETag: eTag,
MD5: md5,
Size: treeNode.Size,
FilePath: filePath,
IsDeleteMarker: isDeleteMarker,
},
IsUnversioned: isUnversioned,
IsCombined: isCombined,
}
if createdStr, ok := treeNode.Get(createdKV); ok {
if utcMilli, err := strconv.ParseInt(createdStr, 10, 64); err == nil {
created := time.UnixMilli(utcMilli)
version.Created = &created
}
}
if ownerStr, ok := treeNode.Get(ownerKV); ok {
var owner user.ID
if err := owner.DecodeString(ownerStr); err == nil {
version.Owner = &owner
}
}
return version
}
func newMultipartInfoFromTreeNode(filePath string, treeNode *treeNode) (*data.MultipartInfo, error) {
uploadID, _ := treeNode.Get(uploadIDKV)
if uploadID == "" {
return nil, fmt.Errorf("it's not a multipart node")
}
multipartInfo := &data.MultipartInfo{
ID: treeNode.ID,
Key: filePath,
UploadID: uploadID,
Meta: treeNode.Meta,
}
ownerID, _ := treeNode.Get(ownerKV)
_ = multipartInfo.Owner.DecodeString(ownerID)
created, _ := treeNode.Get(createdKV)
if utcMilli, err := strconv.ParseInt(created, 10, 64); err == nil {
multipartInfo.Created = time.UnixMilli(utcMilli)
}
finished, _ := treeNode.Get(finishedKV)
if flag, err := strconv.ParseBool(finished); err == nil {
multipartInfo.Finished = flag
}
return multipartInfo, nil
}
func newMultipartInfo(node NodeResponse) (*data.MultipartInfo, error) {
multipartInfo := &data.MultipartInfo{
ID: node.GetNodeID(),
Meta: make(map[string]string, len(node.GetMeta())),
}
for _, kv := range node.GetMeta() {
switch kv.GetKey() {
case uploadIDKV:
multipartInfo.UploadID = string(kv.GetValue())
case FileNameKey:
multipartInfo.Key = string(kv.GetValue())
case createdKV:
if utcMilli, err := strconv.ParseInt(string(kv.GetValue()), 10, 64); err == nil {
multipartInfo.Created = time.UnixMilli(utcMilli)
}
case ownerKV:
_ = multipartInfo.Owner.DecodeString(string(kv.GetValue()))
case finishedKV:
if isFinished, err := strconv.ParseBool(string(kv.GetValue())); err == nil {
multipartInfo.Finished = isFinished
}
default:
multipartInfo.Meta[kv.GetKey()] = string(kv.GetValue())
}
}
if multipartInfo.UploadID == "" {
return nil, fmt.Errorf("it's not a multipart node")
}
return multipartInfo, nil
}
func newPartInfo(node NodeResponse) (*data.PartInfo, error) {
var err error
partInfo := &data.PartInfo{}
for _, kv := range node.GetMeta() {
value := string(kv.GetValue())
switch kv.GetKey() {
case partNumberKV:
if partInfo.Number, err = strconv.Atoi(value); err != nil {
return nil, fmt.Errorf("invalid part number: %w", err)
}
case oidKV:
if err = partInfo.OID.DecodeString(value); err != nil {
return nil, fmt.Errorf("invalid oid: %w", err)
}
case etagKV:
partInfo.ETag = value
case sizeKV:
if partInfo.Size, err = strconv.ParseUint(value, 10, 64); err != nil {
return nil, fmt.Errorf("invalid part size: %w", err)
}
case createdKV:
var utcMilli int64
if utcMilli, err = strconv.ParseInt(value, 10, 64); err != nil {
return nil, fmt.Errorf("invalid created timestamp: %w", err)
}
partInfo.Created = time.UnixMilli(utcMilli)
case md5KV:
partInfo.MD5 = value
}
}
if partInfo.Number <= 0 {
return nil, fmt.Errorf("it's not a part node")
}
return partInfo, nil
}
func (c *Tree) GetSettingsNode(ctx context.Context, bktInfo *data.BucketInfo) (*data.BucketSettings, error) {
keysToReturn := []string{versioningKV, lockConfigurationKV}
node, err := c.getSystemNode(ctx, bktInfo, []string{settingsFileName}, keysToReturn)
if err != nil {
return nil, fmt.Errorf("couldn't get node: %w", err)
}
settings := &data.BucketSettings{Versioning: data.VersioningUnversioned}
if versioningValue, ok := node.Get(versioningKV); ok {
settings.Versioning = versioningValue
}
if lockConfigurationValue, ok := node.Get(lockConfigurationKV); ok {
if settings.LockConfiguration, err = parseLockConfiguration(lockConfigurationValue); err != nil {
return nil, fmt.Errorf("settings node: invalid lock configuration: %w", err)
}
}
return settings, nil
}
func (c *Tree) PutSettingsNode(ctx context.Context, bktInfo *data.BucketInfo, settings *data.BucketSettings) error {
node, err := c.getSystemNode(ctx, bktInfo, []string{settingsFileName}, []string{})
isErrNotFound := errors.Is(err, layer.ErrNodeNotFound)
if err != nil && !isErrNotFound {
return fmt.Errorf("couldn't get node: %w", err)
}
meta := metaFromSettings(settings)
if isErrNotFound {
_, err = c.service.AddNode(ctx, bktInfo, systemTree, 0, meta)
return err
}
return c.service.MoveNode(ctx, bktInfo, systemTree, node.ID, 0, meta)
}
func (c *Tree) GetNotificationConfigurationNode(ctx context.Context, bktInfo *data.BucketInfo) (oid.ID, error) {
node, err := c.getSystemNode(ctx, bktInfo, []string{notifConfFileName}, []string{oidKV})
if err != nil {
return oid.ID{}, err
}
return node.ObjID, nil
}
func (c *Tree) PutNotificationConfigurationNode(ctx context.Context, bktInfo *data.BucketInfo, objID oid.ID) (oid.ID, error) {
node, err := c.getSystemNode(ctx, bktInfo, []string{notifConfFileName}, []string{oidKV})
isErrNotFound := errors.Is(err, layer.ErrNodeNotFound)
if err != nil && !isErrNotFound {
return oid.ID{}, fmt.Errorf("couldn't get node: %w", err)
}
meta := make(map[string]string)
meta[FileNameKey] = notifConfFileName
meta[oidKV] = objID.EncodeToString()
if isErrNotFound {
if _, err = c.service.AddNode(ctx, bktInfo, systemTree, 0, meta); err != nil {
return oid.ID{}, err
}
return oid.ID{}, layer.ErrNoNodeToRemove
}
return node.ObjID, c.service.MoveNode(ctx, bktInfo, systemTree, node.ID, 0, meta)
}
func (c *Tree) GetBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) (oid.ID, error) {
node, err := c.getSystemNode(ctx, bktInfo, []string{corsFilename}, []string{oidKV})
if err != nil {
return oid.ID{}, err
}
return node.ObjID, nil
}
func (c *Tree) PutBucketCORS(ctx context.Context, bktInfo *data.BucketInfo, objID oid.ID) (oid.ID, error) {
node, err := c.getSystemNode(ctx, bktInfo, []string{corsFilename}, []string{oidKV})
isErrNotFound := errors.Is(err, layer.ErrNodeNotFound)
if err != nil && !isErrNotFound {
return oid.ID{}, fmt.Errorf("couldn't get node: %w", err)
}
meta := make(map[string]string)
meta[FileNameKey] = corsFilename
meta[oidKV] = objID.EncodeToString()
if isErrNotFound {
if _, err = c.service.AddNode(ctx, bktInfo, systemTree, 0, meta); err != nil {
return oid.ID{}, err
}
return oid.ID{}, layer.ErrNoNodeToRemove
}
return node.ObjID, c.service.MoveNode(ctx, bktInfo, systemTree, node.ID, 0, meta)
}
func (c *Tree) DeleteBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) (oid.ID, error) {
node, err := c.getSystemNode(ctx, bktInfo, []string{corsFilename}, []string{oidKV})
if err != nil && !errors.Is(err, layer.ErrNodeNotFound) {
return oid.ID{}, err
}
if node != nil {
return node.ObjID, c.service.RemoveNode(ctx, bktInfo, systemTree, node.ID)
}
return oid.ID{}, layer.ErrNoNodeToRemove
}
func (c *Tree) GetObjectTagging(ctx context.Context, bktInfo *data.BucketInfo, objVersion *data.NodeVersion) (map[string]string, error) {
tagNode, err := c.getTreeNode(ctx, bktInfo, objVersion.ID, isTagKV)
if err != nil {
return nil, err
}
return getObjectTagging(tagNode), nil
}
func getObjectTagging(tagNode *treeNode) map[string]string {
if tagNode == nil {
return nil
}
meta := make(map[string]string)
for key, val := range tagNode.Meta {
if strings.HasPrefix(key, userDefinedTagPrefix) {
meta[strings.TrimPrefix(key, userDefinedTagPrefix)] = val
}
}
return meta
}
func (c *Tree) PutObjectTagging(ctx context.Context, bktInfo *data.BucketInfo, objVersion *data.NodeVersion, tagSet map[string]string) error {
tagNode, err := c.getTreeNode(ctx, bktInfo, objVersion.ID, isTagKV)
if err != nil {
return err
}
treeTagSet := make(map[string]string)
treeTagSet[isTagKV] = "true"
for key, val := range tagSet {
treeTagSet[userDefinedTagPrefix+key] = val
}
if tagNode == nil {
_, err = c.service.AddNode(ctx, bktInfo, versionTree, objVersion.ID, treeTagSet)
} else {
err = c.service.MoveNode(ctx, bktInfo, versionTree, tagNode.ID, objVersion.ID, treeTagSet)
}
return err
}
func (c *Tree) DeleteObjectTagging(ctx context.Context, bktInfo *data.BucketInfo, objVersion *data.NodeVersion) error {
return c.PutObjectTagging(ctx, bktInfo, objVersion, nil)
}
func (c *Tree) GetBucketTagging(ctx context.Context, bktInfo *data.BucketInfo) (map[string]string, error) {
node, err := c.getSystemNodeWithAllAttributes(ctx, bktInfo, []string{bucketTaggingFilename})
if err != nil {
return nil, err
}
tags := make(map[string]string)
for key, val := range node.Meta {
if strings.HasPrefix(key, userDefinedTagPrefix) {
tags[strings.TrimPrefix(key, userDefinedTagPrefix)] = val
}
}
return tags, nil
}
func (c *Tree) PutBucketTagging(ctx context.Context, bktInfo *data.BucketInfo, tagSet map[string]string) error {
node, err := c.getSystemNode(ctx, bktInfo, []string{bucketTaggingFilename}, []string{})
isErrNotFound := errors.Is(err, layer.ErrNodeNotFound)
if err != nil && !isErrNotFound {
return fmt.Errorf("couldn't get node: %w", err)
}
treeTagSet := make(map[string]string)
treeTagSet[FileNameKey] = bucketTaggingFilename
for key, val := range tagSet {
treeTagSet[userDefinedTagPrefix+key] = val
}
if isErrNotFound {
_, err = c.service.AddNode(ctx, bktInfo, systemTree, 0, treeTagSet)
} else {
err = c.service.MoveNode(ctx, bktInfo, systemTree, node.ID, 0, treeTagSet)
}
return err
}
func (c *Tree) DeleteBucketTagging(ctx context.Context, bktInfo *data.BucketInfo) error {
return c.PutBucketTagging(ctx, bktInfo, nil)
}
func (c *Tree) getTreeNode(ctx context.Context, bktInfo *data.BucketInfo, nodeID uint64, key string) (*treeNode, error) {
nodes, err := c.getTreeNodes(ctx, bktInfo, nodeID, key)
if err != nil {
return nil, err
}
// if there will be many allocations, consider having separate
// implementations of 'getTreeNode' and 'getTreeNodes'
return nodes[key], nil
}
func (c *Tree) getTreeNodes(ctx context.Context, bktInfo *data.BucketInfo, nodeID uint64, keys ...string) (map[string]*treeNode, error) {
subtree, err := c.service.GetSubTree(ctx, bktInfo, versionTree, nodeID, 2)
if err != nil {
return nil, err
}
treeNodes := make(map[string]*treeNode, len(keys))
for _, s := range subtree {
node, err := newTreeNode(s)
if err != nil {
return nil, err
}
for _, key := range keys {
if _, ok := node.Get(key); ok {
treeNodes[key] = node
break
}
}
if len(treeNodes) == len(keys) {
break
}
}
return treeNodes, nil
}
func (c *Tree) GetVersions(ctx context.Context, bktInfo *data.BucketInfo, filepath string) ([]*data.NodeVersion, error) {
return c.getVersions(ctx, bktInfo, versionTree, filepath, false)
}
func (c *Tree) GetLatestVersion(ctx context.Context, bktInfo *data.BucketInfo, objectName string) (*data.NodeVersion, error) {
meta := []string{oidKV, isUnversionedKV, isDeleteMarkerKV, etagKV, sizeKV, md5KV}
path := pathFromName(objectName)
p := &GetNodesParams{
BktInfo: bktInfo,
TreeID: versionTree,
Path: path,
Meta: meta,
LatestOnly: false,
AllAttrs: false,
}
nodes, err := c.service.GetNodes(ctx, p)
if err != nil {
return nil, err
}
latestNode, err := getLatestNode(nodes)
if err != nil {
return nil, err
}
return newNodeVersion(objectName, latestNode)
}
func getLatestNode(nodes []NodeResponse) (NodeResponse, error) {
var (
maxCreationTime uint64
targetIndexNode = -1
)
for i, node := range nodes {
currentCreationTime := node.GetTimestamp()
if checkExistOID(node.GetMeta()) && currentCreationTime > maxCreationTime {
maxCreationTime = currentCreationTime
targetIndexNode = i
}
}
if targetIndexNode == -1 {
return nil, layer.ErrNodeNotFound
}
return nodes[targetIndexNode], nil
}
func checkExistOID(meta []Meta) bool {
for _, kv := range meta {
if kv.GetKey() == "OID" {
return true
}
}
return false
}
// pathFromName splits name by '/'.
func pathFromName(objectName string) []string {
return strings.Split(objectName, separator)
}
func (c *Tree) GetLatestVersionsByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string) ([]*data.NodeVersion, error) {
return c.getVersionsByPrefix(ctx, bktInfo, prefix, true)
}
type DummySubTreeStream struct {
data NodeResponse
read bool
}
func (s *DummySubTreeStream) Next() (NodeResponse, error) {
if s.read {
return nil, io.EOF
}
s.read = true
return s.data, nil
}
type LatestVersionsByPrefixStreamImpl struct {
ctx context.Context
rootID uint64
intermediateRootID uint64
service ServiceClient
bktInfo *data.BucketInfo
mainStream SubTreeStream
innerStream SubTreeStream
headPrefix string
tailPrefix string
namesMap map[uint64]string
ended bool
}
func (s *LatestVersionsByPrefixStreamImpl) Next(ctx context.Context) (*data.NodeVersion, error) {
const latestOnly = true
if s.ended {
return nil, io.EOF
}
if s.innerStream == nil {
node, err := s.mainStream.Next()
if err != nil {
return nil, fmt.Errorf("main stream next: %w", err)
}
if node.GetNodeID() == s.rootID || !strings.HasPrefix(getFilename(node), s.tailPrefix) {
return s.Next(ctx)
}
if node.GetParentID() == s.rootID {
s.intermediateRootID = node.GetNodeID()
}
if isIntermediate(node) {
s.innerStream, err = s.service.GetSubTreeStream(s.ctx, s.bktInfo, versionTree, node.GetNodeID(), maxGetSubTreeDepth)
if err != nil {
return nil, fmt.Errorf("get sub tree node from main stream: %w", err)
}
} else {
s.innerStream = &DummySubTreeStream{data: node}
}
}
node, err := s.innerStream.Next()
if err != nil {
if errors.Is(err, io.EOF) {
s.innerStream = nil
s.namesMap = map[uint64]string{}
return s.Next(ctx)
}
return nil, fmt.Errorf("inner stream: %w", err)
}
treeNode, fileName, err := parseTreeNode(node)
if err != nil {
return s.Next(ctx)
}
var parentPrefix string
if s.headPrefix != "" { // The root of subTree can also have a parent
parentPrefix = strings.TrimSuffix(s.headPrefix, separator) + separator // To avoid 'foo//bar'
}
var filepath string
if treeNode.ID != s.intermediateRootID {
if filepath, err = formFilePath(node, fileName, s.namesMap); err != nil {
return nil, fmt.Errorf("invalid node order: %w", err)
}
} else {
filepath = parentPrefix + fileName
s.namesMap[treeNode.ID] = filepath
}
if treeNode.ObjID.Equals(oid.ID{}) { // The node can be intermediate but we still want to update namesMap
return s.Next(ctx)
}
return newNodeVersionFromTreeNode(filepath, treeNode), nil
}
func (c *Tree) GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (data.VersionsStream, error) {
mainStream, tailPrefix, rootID, err := c.getSubTreeByPrefixMainStream(ctx, bktInfo, versionTree, prefix)
if err != nil {
if errors.Is(err, io.EOF) {
return &LatestVersionsByPrefixStreamImpl{ended: true}, nil
}
return nil, err
}
return &LatestVersionsByPrefixStreamImpl{
ctx: ctx,
namesMap: map[uint64]string{},
rootID: rootID,
service: c.service,
bktInfo: bktInfo,
mainStream: mainStream,
headPrefix: strings.TrimSuffix(prefix, tailPrefix),
tailPrefix: tailPrefix,
}, nil
}
func (c *Tree) getSubTreeByPrefixMainStream(ctx context.Context, bktInfo *data.BucketInfo, treeID, prefix string) (SubTreeStream, string, uint64, error) {
rootID, tailPrefix, err := c.determinePrefixNode(ctx, bktInfo, treeID, prefix)
if err != nil {
if errors.Is(err, layer.ErrNodeNotFound) {
return nil, "", 0, io.EOF
}
return nil, "", 0, err
}
subTree, err := c.service.GetSubTreeStream(ctx, bktInfo, treeID, rootID, 2)
if err != nil {
if errors.Is(err, layer.ErrNodeNotFound) {
return nil, "", 0, io.EOF
}
return nil, "", 0, err
}
return subTree, tailPrefix, rootID, nil
}
func (c *Tree) determinePrefixNode(ctx context.Context, bktInfo *data.BucketInfo, treeID, prefix string) (uint64, string, error) {
var rootID uint64
path := strings.Split(prefix, separator)
tailPrefix := path[len(path)-1]
if len(path) > 1 {
var err error
rootID, err = c.getPrefixNodeID(ctx, bktInfo, treeID, path[:len(path)-1])
if err != nil {
return 0, "", err
}
}
return rootID, tailPrefix, nil
}
func (c *Tree) getPrefixNodeID(ctx context.Context, bktInfo *data.BucketInfo, treeID string, prefixPath []string) (uint64, error) {
p := &GetNodesParams{
BktInfo: bktInfo,
TreeID: treeID,
Path: prefixPath,
LatestOnly: false,
AllAttrs: true,
}
nodes, err := c.service.GetNodes(ctx, p)
if err != nil {
return 0, err
}
var intermediateNodes []uint64
for _, node := range nodes {
if isIntermediate(node) {
intermediateNodes = append(intermediateNodes, node.GetNodeID())
}
}
if len(intermediateNodes) == 0 {
return 0, layer.ErrNodeNotFound
}
if len(intermediateNodes) > 1 {
return 0, fmt.Errorf("found more than one intermediate nodes")
}
return intermediateNodes[0], nil
}
func (c *Tree) getSubTreeByPrefix(ctx context.Context, bktInfo *data.BucketInfo, treeID, prefix string, latestOnly bool) ([]NodeResponse, string, error) {
rootID, tailPrefix, err := c.determinePrefixNode(ctx, bktInfo, treeID, prefix)
if err != nil {
if errors.Is(err, layer.ErrNodeNotFound) {
return nil, "", nil
}
return nil, "", err
}
subTree, err := c.service.GetSubTree(ctx, bktInfo, treeID, rootID, 2)
if err != nil {
if errors.Is(err, layer.ErrNodeNotFound) {
return nil, "", nil
}
return nil, "", err
}
nodesMap := make(map[string][]NodeResponse, len(subTree))
for _, node := range subTree {
if node.GetNodeID() == rootID {
continue
}
fileName := getFilename(node)
if !strings.HasPrefix(fileName, tailPrefix) {
continue
}
nodes := nodesMap[fileName]
// Add all nodes if flag latestOnly is false.
// Add all intermediate nodes (actually should be exactly one intermediate node with the same name)
// and only latest leaf (object) nodes. To do this store and replace last leaf (object) node in nodes[0]
if len(nodes) == 0 {
nodes = []NodeResponse{node}
} else if !latestOnly || isIntermediate(node) {
nodes = append(nodes, node)
} else if isIntermediate(nodes[0]) {
nodes = append([]NodeResponse{node}, nodes...)
} else if node.GetTimestamp() > nodes[0].GetTimestamp() {
nodes[0] = node
}
nodesMap[fileName] = nodes
}
result := make([]NodeResponse, 0, len(subTree))
for _, nodes := range nodesMap {
result = append(result, nodes...)
}
return result, strings.TrimSuffix(prefix, tailPrefix), nil
}
func getFilename(node NodeResponse) string {
for _, kv := range node.GetMeta() {
if kv.GetKey() == FileNameKey {
return string(kv.GetValue())
}
}
return ""
}
func isIntermediate(node NodeResponse) bool {
if len(node.GetMeta()) != 1 {
return false
}
return node.GetMeta()[0].GetKey() == FileNameKey
}
func (c *Tree) getSubTreeVersionsOld(ctx context.Context, bktInfo *data.BucketInfo, node NodeResponse, parentFilePath string, latestOnly bool) ([]*data.NodeVersion, error) {
return c.getSubTreeVersions(ctx, bktInfo, node, parentFilePath, latestOnly, false)
}
func (c *Tree) getSubTreeVersions(ctx context.Context, bktInfo *data.BucketInfo, node NodeResponse, parentFilePath string, latestOnly, skipLeafs bool) ([]*data.NodeVersion, error) {
var err error
subTree := []NodeResponse{node}
if !skipLeafs || isIntermediate(node) {
subTree, err = c.service.GetSubTree(ctx, bktInfo, versionTree, node.GetNodeID(), maxGetSubTreeDepth)
if err != nil {
return nil, err
}
}
var parentPrefix string
if parentFilePath != "" { // The root of subTree can also have a parent
parentPrefix = strings.TrimSuffix(parentFilePath, separator) + separator // To avoid 'foo//bar'
}
var emptyOID oid.ID
var filepath string
namesMap := make(map[uint64]string, len(subTree))
versions := make(map[string][]*data.NodeVersion, len(subTree))
for i, node := range subTree {
treeNode, fileName, err := parseTreeNode(node)
if err != nil {
continue
}
if i != 0 {
if filepath, err = formFilePath(node, fileName, namesMap); err != nil {
return nil, fmt.Errorf("invalid node order: %w", err)
}
} else {
filepath = parentPrefix + fileName
namesMap[treeNode.ID] = filepath
}
if treeNode.ObjID.Equals(emptyOID) { // The node can be intermediate but we still want to update namesMap
continue
}
key := formLatestNodeKey(node.GetParentID(), fileName)
versionNodes, ok := versions[key]
if !ok {
versionNodes = []*data.NodeVersion{newNodeVersionFromTreeNode(filepath, treeNode)}
} else if !latestOnly {
versionNodes = append(versionNodes, newNodeVersionFromTreeNode(filepath, treeNode))
} else if versionNodes[0].Timestamp <= treeNode.TimeStamp {
versionNodes[0] = newNodeVersionFromTreeNode(filepath, treeNode)
}
versions[key] = versionNodes
}
result := make([]*data.NodeVersion, 0, len(versions)) // consider use len(subTree)
for _, version := range versions {
if latestOnly && version[0].IsDeleteMarker {
continue
}
result = append(result, version...)
}
return result, nil
}
func formFilePath(node NodeResponse, fileName string, namesMap map[uint64]string) (string, error) {
parentPath, ok := namesMap[node.GetParentID()]
if !ok {
return "", fmt.Errorf("couldn't get parent path")
}
filepath := parentPath + separator + fileName
namesMap[node.GetNodeID()] = filepath
return filepath, nil
}
func parseTreeNode(node NodeResponse) (*treeNode, string, error) {
treeNode, err := newTreeNode(node)
if err != nil { // invalid OID attribute
return nil, "", err
}
fileName, ok := treeNode.FileName()
if !ok {
return nil, "", fmt.Errorf("doesn't contain FileName")
}
return treeNode, fileName, nil
}
func formLatestNodeKey(parentID uint64, fileName string) string {
return strconv.FormatUint(parentID, 10) + "." + fileName
}
func (c *Tree) GetAllVersionsByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string) ([]*data.NodeVersion, error) {
return c.getVersionsByPrefixOld(ctx, bktInfo, prefix, false)
}
func (c *Tree) GetAllVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (data.VersionsStream, error) {
//return c.getVersionsByPrefixOld(ctx, bktInfo, prefix, false)
mainStream, tailPrefix, rootID, err := c.getSubTreeByPrefixMainStream(ctx, bktInfo, versionTree, prefix)
if err != nil {
if errors.Is(err, io.EOF) {
return &LatestVersionsByPrefixStreamImpl{ended: true}, nil
}
return nil, err
}
return &LatestVersionsByPrefixStreamImpl{
ctx: ctx,
namesMap: map[uint64]string{},
rootID: rootID,
service: c.service,
bktInfo: bktInfo,
mainStream: mainStream,
headPrefix: strings.TrimSuffix(prefix, tailPrefix),
tailPrefix: tailPrefix,
}, nil
}
func (c *Tree) getVersionsByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string, latestOnly bool) ([]*data.NodeVersion, error) {
prefixNodes, headPrefix, err := c.getSubTreeByPrefix(ctx, bktInfo, versionTree, prefix, latestOnly)
if err != nil {
return nil, err
}
var result []*data.NodeVersion
for _, node := range prefixNodes {
versions, err := c.getSubTreeVersions(ctx, bktInfo, node, headPrefix, latestOnly, true)
if err != nil {
return nil, err
}
result = append(result, versions...)
}
return result, nil
}
func (c *Tree) getVersionsByPrefixOld(ctx context.Context, bktInfo *data.BucketInfo, prefix string, latestOnly bool) ([]*data.NodeVersion, error) {
prefixNodes, headPrefix, err := c.getSubTreeByPrefix(ctx, bktInfo, versionTree, prefix, latestOnly)
if err != nil {
return nil, err
}
var result []*data.NodeVersion
for _, node := range prefixNodes {
versions, err := c.getSubTreeVersionsOld(ctx, bktInfo, node, headPrefix, latestOnly)
if err != nil {
return nil, err
}
result = append(result, versions...)
}
return result, nil
}
func (c *Tree) GetUnversioned(ctx context.Context, bktInfo *data.BucketInfo, filepath string) (*data.NodeVersion, error) {
return c.getUnversioned(ctx, bktInfo, versionTree, filepath)
}
func (c *Tree) getUnversioned(ctx context.Context, bktInfo *data.BucketInfo, treeID, filepath string) (*data.NodeVersion, error) {
nodes, err := c.getVersions(ctx, bktInfo, treeID, filepath, true)
if err != nil {
return nil, err
}
if len(nodes) == 0 {
return nil, layer.ErrNodeNotFound
}
if len(nodes) > 1 {
c.reqLogger(ctx).Debug(logs.FoundMoreThanOneUnversionedNode,
zap.String("treeID", treeID), zap.String("filepath", filepath))
}
sort.Slice(nodes, func(i, j int) bool {
return nodes[i].Timestamp > nodes[j].Timestamp
})
return nodes[0], nil
}
func (c *Tree) AddVersion(ctx context.Context, bktInfo *data.BucketInfo, version *data.NodeVersion) (uint64, error) {
return c.addVersion(ctx, bktInfo, versionTree, version)
}
func (c *Tree) RemoveVersion(ctx context.Context, bktInfo *data.BucketInfo, id uint64) error {
return c.service.RemoveNode(ctx, bktInfo, versionTree, id)
}
func (c *Tree) CreateMultipartUpload(ctx context.Context, bktInfo *data.BucketInfo, info *data.MultipartInfo) error {
path := pathFromName(info.Key)
meta := metaFromMultipart(info, path[len(path)-1])
_, err := c.service.AddNodeByPath(ctx, bktInfo, systemTree, path[:len(path)-1], meta)
return err
}
func (c *Tree) GetMultipartUploadsByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string) ([]*data.MultipartInfo, error) {
subTreeNodes, headPrefix, err := c.getSubTreeByPrefix(ctx, bktInfo, systemTree, prefix, false)
if err != nil {
return nil, err
}
var result []*data.MultipartInfo
for _, node := range subTreeNodes {
multipartUploads, err := c.getSubTreeMultipartUploads(ctx, bktInfo, node.GetNodeID(), headPrefix)
if err != nil {
return nil, err
}
result = append(result, multipartUploads...)
}
return result, nil
}
func (c *Tree) getSubTreeMultipartUploads(ctx context.Context, bktInfo *data.BucketInfo, nodeID uint64, parentFilePath string) ([]*data.MultipartInfo, error) {
subTree, err := c.service.GetSubTree(ctx, bktInfo, systemTree, nodeID, maxGetSubTreeDepth)
if err != nil {
return nil, err
}
var parentPrefix string
if parentFilePath != "" { // The root of subTree can also have a parent
parentPrefix = strings.TrimSuffix(parentFilePath, separator) + separator // To avoid 'foo//bar'
}
var filepath string
namesMap := make(map[uint64]string, len(subTree))
multiparts := make(map[string][]*data.MultipartInfo, len(subTree))
for i, node := range subTree {
treeNode, fileName, err := parseTreeNode(node)
if err != nil {
continue
}
if i != 0 {
if filepath, err = formFilePath(node, fileName, namesMap); err != nil {
return nil, fmt.Errorf("invalid node order: %w", err)
}
} else {
filepath = parentPrefix + fileName
namesMap[treeNode.ID] = filepath
}
multipartInfo, err := newMultipartInfoFromTreeNode(filepath, treeNode)
if err != nil || multipartInfo.Finished {
continue
}
key := formLatestNodeKey(node.GetParentID(), fileName)
multipartInfos, ok := multiparts[key]
if !ok {
multipartInfos = []*data.MultipartInfo{multipartInfo}
} else {
multipartInfos = append(multipartInfos, multipartInfo)
}
multiparts[key] = multipartInfos
}
result := make([]*data.MultipartInfo, 0, len(multiparts))
for _, multipartInfo := range multiparts {
result = append(result, multipartInfo...)
}
return result, nil
}
func (c *Tree) GetMultipartUpload(ctx context.Context, bktInfo *data.BucketInfo, objectName, uploadID string) (*data.MultipartInfo, error) {
path := pathFromName(objectName)
p := &GetNodesParams{
BktInfo: bktInfo,
TreeID: systemTree,
Path: path,
AllAttrs: true,
}
nodes, err := c.service.GetNodes(ctx, p)
if err != nil {
return nil, err
}
for _, node := range nodes {
info, err := newMultipartInfo(node)
if err != nil {
continue
}
if info.UploadID == uploadID {
if info.Finished {
break
}
return info, nil
}
}
return nil, layer.ErrNodeNotFound
}
func (c *Tree) AddPart(ctx context.Context, bktInfo *data.BucketInfo, multipartNodeID uint64, info *data.PartInfo) (oldObjIDToDelete oid.ID, err error) {
parts, err := c.service.GetSubTree(ctx, bktInfo, systemTree, multipartNodeID, 2)
if err != nil {
return oid.ID{}, err
}
meta := map[string]string{
partNumberKV: strconv.Itoa(info.Number),
oidKV: info.OID.EncodeToString(),
sizeKV: strconv.FormatUint(info.Size, 10),
createdKV: strconv.FormatInt(info.Created.UTC().UnixMilli(), 10),
etagKV: info.ETag,
md5KV: info.MD5,
}
for _, part := range parts {
if part.GetNodeID() == multipartNodeID {
continue
}
partInfo, err := newPartInfo(part)
if err != nil {
continue
}
if partInfo.Number == info.Number {
return partInfo.OID, c.service.MoveNode(ctx, bktInfo, systemTree, part.GetNodeID(), multipartNodeID, meta)
}
}
if _, err = c.service.AddNode(ctx, bktInfo, systemTree, multipartNodeID, meta); err != nil {
return oid.ID{}, err
}
return oid.ID{}, layer.ErrNoNodeToRemove
}
func (c *Tree) GetParts(ctx context.Context, bktInfo *data.BucketInfo, multipartNodeID uint64) ([]*data.PartInfo, error) {
parts, err := c.service.GetSubTree(ctx, bktInfo, systemTree, multipartNodeID, 2)
if err != nil {
return nil, err
}
result := make([]*data.PartInfo, 0, len(parts))
for _, part := range parts {
if part.GetNodeID() == multipartNodeID {
continue
}
partInfo, err := newPartInfo(part)
if err != nil {
continue
}
result = append(result, partInfo)
}
return result, nil
}
func (c *Tree) DeleteMultipartUpload(ctx context.Context, bktInfo *data.BucketInfo, multipartInfo *data.MultipartInfo) error {
err := c.service.RemoveNode(ctx, bktInfo, systemTree, multipartInfo.ID)
if err != nil {
return err
}
multipartInfo.Finished = true
return c.CreateMultipartUpload(ctx, bktInfo, multipartInfo)
}
func (c *Tree) PutLock(ctx context.Context, bktInfo *data.BucketInfo, nodeID uint64, lock *data.LockInfo) error {
meta := map[string]string{isLockKV: "true"}
if lock.IsLegalHoldSet() {
meta[legalHoldOIDKV] = lock.LegalHold().EncodeToString()
}
if lock.IsRetentionSet() {
meta[retentionOIDKV] = lock.Retention().EncodeToString()
meta[untilDateKV] = lock.UntilDate()
if lock.IsCompliance() {
meta[isComplianceKV] = "true"
}
}
if lock.ID() == 0 {
_, err := c.service.AddNode(ctx, bktInfo, versionTree, nodeID, meta)
return err
}
return c.service.MoveNode(ctx, bktInfo, versionTree, lock.ID(), nodeID, meta)
}
func (c *Tree) GetLock(ctx context.Context, bktInfo *data.BucketInfo, nodeID uint64) (*data.LockInfo, error) {
lockNode, err := c.getTreeNode(ctx, bktInfo, nodeID, isLockKV)
if err != nil {
return nil, err
}
return getLock(lockNode)
}
func getLock(lockNode *treeNode) (*data.LockInfo, error) {
if lockNode == nil {
return &data.LockInfo{}, nil
}
lockInfo := data.NewLockInfo(lockNode.ID)
if legalHold, ok := lockNode.Get(legalHoldOIDKV); ok {
var legalHoldOID oid.ID
if err := legalHoldOID.DecodeString(legalHold); err != nil {
return nil, fmt.Errorf("invalid legal hold object id: %w", err)
}
lockInfo.SetLegalHold(legalHoldOID)
}
if retention, ok := lockNode.Get(retentionOIDKV); ok {
var retentionOID oid.ID
if err := retentionOID.DecodeString(retention); err != nil {
return nil, fmt.Errorf("invalid retention object id: %w", err)
}
_, isCompliance := lockNode.Get(isComplianceKV)
untilDate, _ := lockNode.Get(untilDateKV)
lockInfo.SetRetention(retentionOID, untilDate, isCompliance)
}
return lockInfo, nil
}
func (c *Tree) GetObjectTaggingAndLock(ctx context.Context, bktInfo *data.BucketInfo, objVersion *data.NodeVersion) (map[string]string, *data.LockInfo, error) {
nodes, err := c.getTreeNodes(ctx, bktInfo, objVersion.ID, isTagKV, isLockKV)
if err != nil {
return nil, nil, err
}
lockInfo, err := getLock(nodes[isLockKV])
if err != nil {
return nil, nil, err
}
return getObjectTagging(nodes[isTagKV]), lockInfo, nil
}
func (c *Tree) addVersion(ctx context.Context, bktInfo *data.BucketInfo, treeID string, version *data.NodeVersion) (uint64, error) {
path := pathFromName(version.FilePath)
meta := map[string]string{
oidKV: version.OID.EncodeToString(),
FileNameKey: path[len(path)-1],
ownerKV: version.Owner.EncodeToString(),
createdKV: strconv.FormatInt(version.Created.UTC().UnixMilli(), 10),
}
if version.Size > 0 {
meta[sizeKV] = strconv.FormatUint(version.Size, 10)
}
if len(version.ETag) > 0 {
meta[etagKV] = version.ETag
}
if len(version.MD5) > 0 {
meta[md5KV] = version.MD5
}
if version.IsDeleteMarker {
meta[isDeleteMarkerKV] = "true"
}
if version.IsCombined {
meta[isCombinedKV] = "true"
}
if version.IsUnversioned {
meta[isUnversionedKV] = "true"
node, err := c.getUnversioned(ctx, bktInfo, treeID, version.FilePath)
if err == nil {
if err = c.service.MoveNode(ctx, bktInfo, treeID, node.ID, node.ParenID, meta); err != nil {
return 0, err
}
return node.ID, c.clearOutdatedVersionInfo(ctx, bktInfo, treeID, node.ID)
}
if !errors.Is(err, layer.ErrNodeNotFound) {
return 0, err
}
}
return c.service.AddNodeByPath(ctx, bktInfo, treeID, path[:len(path)-1], meta)
}
func (c *Tree) clearOutdatedVersionInfo(ctx context.Context, bktInfo *data.BucketInfo, treeID string, nodeID uint64) error {
taggingNode, err := c.getTreeNode(ctx, bktInfo, nodeID, isTagKV)
if err != nil {
return err
}
if taggingNode != nil {
return c.service.RemoveNode(ctx, bktInfo, treeID, taggingNode.ID)
}
return nil
}
func (c *Tree) getVersions(ctx context.Context, bktInfo *data.BucketInfo, treeID, filepath string, onlyUnversioned bool) ([]*data.NodeVersion, error) {
keysToReturn := []string{oidKV, isUnversionedKV, isDeleteMarkerKV, etagKV, sizeKV, md5KV}
path := pathFromName(filepath)
p := &GetNodesParams{
BktInfo: bktInfo,
TreeID: treeID,
Path: path,
Meta: keysToReturn,
LatestOnly: false,
AllAttrs: false,
}
nodes, err := c.service.GetNodes(ctx, p)
if err != nil {
if errors.Is(err, layer.ErrNodeNotFound) {
return nil, nil
}
return nil, err
}
result := make([]*data.NodeVersion, 0, len(nodes))
for _, node := range nodes {
nodeVersion, err := newNodeVersion(filepath, node)
if err != nil {
return nil, err
}
if onlyUnversioned && !nodeVersion.IsUnversioned {
continue
}
result = append(result, nodeVersion)
}
return result, nil
}
func metaFromSettings(settings *data.BucketSettings) map[string]string {
results := make(map[string]string, 3)
results[FileNameKey] = settingsFileName
results[versioningKV] = settings.Versioning
results[lockConfigurationKV] = encodeLockConfiguration(settings.LockConfiguration)
return results
}
func metaFromMultipart(info *data.MultipartInfo, fileName string) map[string]string {
info.Meta[FileNameKey] = fileName
info.Meta[uploadIDKV] = info.UploadID
info.Meta[ownerKV] = info.Owner.EncodeToString()
info.Meta[createdKV] = strconv.FormatInt(info.Created.UTC().UnixMilli(), 10)
if info.Finished {
info.Meta[finishedKV] = strconv.FormatBool(info.Finished)
}
return info.Meta
}
func (c *Tree) getSystemNode(ctx context.Context, bktInfo *data.BucketInfo, path, meta []string) (*treeNode, error) {
return c.getNode(ctx, bktInfo, systemTree, path, meta, false)
}
func (c *Tree) getSystemNodeWithAllAttributes(ctx context.Context, bktInfo *data.BucketInfo, path []string) (*treeNode, error) {
return c.getNode(ctx, bktInfo, systemTree, path, []string{}, true)
}
func (c *Tree) getNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, path, meta []string, allAttrs bool) (*treeNode, error) {
p := &GetNodesParams{
BktInfo: bktInfo,
TreeID: treeID,
Path: path,
Meta: meta,
LatestOnly: false,
AllAttrs: allAttrs,
}
nodes, err := c.service.GetNodes(ctx, p)
if err != nil {
return nil, err
}
if len(nodes) == 0 {
return nil, layer.ErrNodeNotFound
}
if len(nodes) != 1 {
return nil, fmt.Errorf("found more than one node")
}
return newTreeNode(nodes[0])
}
func (c *Tree) reqLogger(ctx context.Context) *zap.Logger {
reqLogger := middleware.GetReqLog(ctx)
if reqLogger != nil {
return reqLogger
}
return c.log
}
func parseLockConfiguration(value string) (*data.ObjectLockConfiguration, error) {
result := &data.ObjectLockConfiguration{}
if len(value) == 0 {
return result, nil
}
lockValues := strings.Split(value, ",")
result.ObjectLockEnabled = lockValues[0]
if len(lockValues) == 1 {
return result, nil
}
if len(lockValues) != 4 {
return nil, fmt.Errorf("invalid lock configuration: %s", value)
}
var err error
var days, years int64
if len(lockValues[1]) > 0 {
if days, err = strconv.ParseInt(lockValues[1], 10, 64); err != nil {
return nil, fmt.Errorf("invalid lock configuration: %s", value)
}
}
if len(lockValues[3]) > 0 {
if years, err = strconv.ParseInt(lockValues[3], 10, 64); err != nil {
return nil, fmt.Errorf("invalid lock configuration: %s", value)
}
}
result.Rule = &data.ObjectLockRule{
DefaultRetention: &data.DefaultRetention{
Days: days,
Mode: lockValues[2],
Years: years,
},
}
return result, nil
}
func encodeLockConfiguration(conf *data.ObjectLockConfiguration) string {
if conf == nil {
return ""
}
if conf.Rule == nil || conf.Rule.DefaultRetention == nil {
return conf.ObjectLockEnabled
}
defaults := conf.Rule.DefaultRetention
return fmt.Sprintf("%s,%d,%s,%d", conf.ObjectLockEnabled, defaults.Days, defaults.Mode, defaults.Years)
}