frostfs-s3-gw/internal/frostfs/services/pool_wrapper.go

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package services
import (
"context"
"errors"
"fmt"
"io"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/middleware"
errorsFrost "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/frostfs/errors"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/pkg/service/tree"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
grpcService "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree/service"
)
type GetNodeByPathResponseInfoWrapper struct {
response *grpcService.GetNodeByPathResponse_Info
}
func (n GetNodeByPathResponseInfoWrapper) GetNodeID() []uint64 {
return []uint64{n.response.GetNodeId()}
}
func (n GetNodeByPathResponseInfoWrapper) GetParentID() []uint64 {
return []uint64{n.response.GetParentId()}
}
func (n GetNodeByPathResponseInfoWrapper) GetTimestamp() []uint64 {
return []uint64{n.response.GetTimestamp()}
}
func (n GetNodeByPathResponseInfoWrapper) GetMeta() []tree.Meta {
res := make([]tree.Meta, len(n.response.Meta))
for i, value := range n.response.Meta {
res[i] = value
}
return res
}
type GetSubTreeResponseBodyWrapper struct {
response *grpcService.GetSubTreeResponse_Body
}
func (n GetSubTreeResponseBodyWrapper) GetNodeID() []uint64 {
return n.response.GetNodeId()
}
func (n GetSubTreeResponseBodyWrapper) GetParentID() []uint64 {
resp := n.response.GetParentId()
if resp == nil {
// storage sends nil that should be interpreted as []uint64{0}
// due to protobuf compatibility, see 'GetSubTree' function
return []uint64{0}
}
return resp
}
func (n GetSubTreeResponseBodyWrapper) GetTimestamp() []uint64 {
return n.response.GetTimestamp()
}
func (n GetSubTreeResponseBodyWrapper) GetMeta() []tree.Meta {
res := make([]tree.Meta, len(n.response.Meta))
for i, value := range n.response.Meta {
res[i] = value
}
return res
}
type PoolWrapper struct {
p *treepool.Pool
}
func NewPoolWrapper(p *treepool.Pool) *PoolWrapper {
return &PoolWrapper{p: p}
}
func (w *PoolWrapper) GetNodes(ctx context.Context, prm *tree.GetNodesParams) ([]tree.NodeResponse, error) {
poolPrm := treepool.GetNodesParams{
CID: prm.BktInfo.CID,
TreeID: prm.TreeID,
Path: prm.Path,
Meta: prm.Meta,
PathAttribute: tree.FileNameKey,
LatestOnly: prm.LatestOnly,
AllAttrs: prm.AllAttrs,
BearerToken: getBearer(ctx, prm.BktInfo),
}
nodes, err := w.p.GetNodes(ctx, poolPrm)
if err != nil {
return nil, handleError(err)
}
res := make([]tree.NodeResponse, len(nodes))
for i, info := range nodes {
res[i] = GetNodeByPathResponseInfoWrapper{info}
}
return res, nil
}
func (w *PoolWrapper) GetSubTree(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID []uint64, depth uint32) ([]tree.NodeResponse, error) {
poolPrm := treepool.GetSubTreeParams{
CID: bktInfo.CID,
TreeID: treeID,
RootID: rootID,
Depth: depth,
BearerToken: getBearer(ctx, bktInfo),
Order: treepool.AscendingOrder,
}
if len(rootID) == 1 && rootID[0] == 0 {
// storage node interprets 'nil' value as []uint64{0}
// gate wants to send 'nil' value instead of []uint64{0}, because
// it provides compatibility with previous tree service api where
// single uint64(0) value is dropped from signature
poolPrm.RootID = nil
}
subTreeReader, err := w.p.GetSubTree(ctx, poolPrm)
if err != nil {
return nil, handleError(err)
}
var subtree []tree.NodeResponse
node, err := subTreeReader.Next()
for err == nil {
subtree = append(subtree, GetSubTreeResponseBodyWrapper{node})
node, err = subTreeReader.Next()
}
if err != nil && err != io.EOF {
return nil, handleError(err)
}
return subtree, nil
}
type SubTreeStreamImpl struct {
r *treepool.SubTreeReader
buffer []*grpcService.GetSubTreeResponse_Body
eof bool
index int
ln int
}
const bufSize = 1000
func (s *SubTreeStreamImpl) Next() (tree.NodeResponse, error) {
if s.index != -1 {
node := s.buffer[s.index]
s.index++
if s.index >= s.ln {
s.index = -1
}
return GetSubTreeResponseBodyWrapper{response: node}, nil
}
if s.eof {
return nil, io.EOF
}
var err error
s.ln, err = s.r.Read(s.buffer)
if err != nil {
if err != io.EOF {
return nil, fmt.Errorf("sub tree stream impl pool wrap: %w", handleError(err))
}
s.eof = true
}
if s.ln > 0 {
s.index = 0
}
return s.Next()
}
func (w *PoolWrapper) GetSubTreeStream(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID []uint64, depth uint32) (tree.SubTreeStream, error) {
poolPrm := treepool.GetSubTreeParams{
CID: bktInfo.CID,
TreeID: treeID,
RootID: rootID,
Depth: depth,
BearerToken: getBearer(ctx, bktInfo),
Order: treepool.AscendingOrder,
}
if len(rootID) == 1 && rootID[0] == 0 {
// storage node interprets 'nil' value as []uint64{0}
// gate wants to send 'nil' value instead of []uint64{0}, because
// it provides compatibility with previous tree service api where
// single uint64(0) value is dropped from signature
poolPrm.RootID = nil
}
subTreeReader, err := w.p.GetSubTree(ctx, poolPrm)
if err != nil {
return nil, handleError(err)
}
return &SubTreeStreamImpl{
r: subTreeReader,
buffer: make([]*grpcService.GetSubTreeResponse_Body, bufSize),
index: -1,
}, nil
}
func (w *PoolWrapper) AddNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, parent uint64, meta map[string]string) (uint64, error) {
nodeID, err := w.p.AddNode(ctx, treepool.AddNodeParams{
CID: bktInfo.CID,
TreeID: treeID,
Parent: parent,
Meta: meta,
BearerToken: getBearer(ctx, bktInfo),
})
return nodeID, handleError(err)
}
func (w *PoolWrapper) AddNodeByPath(ctx context.Context, bktInfo *data.BucketInfo, treeID string, path []string, meta map[string]string) (uint64, error) {
nodeID, err := w.p.AddNodeByPath(ctx, treepool.AddNodeByPathParams{
CID: bktInfo.CID,
TreeID: treeID,
Path: path,
Meta: meta,
PathAttribute: tree.FileNameKey,
BearerToken: getBearer(ctx, bktInfo),
})
return nodeID, handleError(err)
}
func (w *PoolWrapper) MoveNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, nodeID, parentID uint64, meta map[string]string) error {
return handleError(w.p.MoveNode(ctx, treepool.MoveNodeParams{
CID: bktInfo.CID,
TreeID: treeID,
NodeID: nodeID,
ParentID: parentID,
Meta: meta,
BearerToken: getBearer(ctx, bktInfo),
}))
}
func (w *PoolWrapper) RemoveNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, nodeID uint64) error {
return handleError(w.p.RemoveNode(ctx, treepool.RemoveNodeParams{
CID: bktInfo.CID,
TreeID: treeID,
NodeID: nodeID,
BearerToken: getBearer(ctx, bktInfo),
}))
}
func getBearer(ctx context.Context, bktInfo *data.BucketInfo) []byte {
if bd, err := middleware.GetBoxData(ctx); err == nil {
if bd.Gate.BearerToken != nil {
if bd.Gate.BearerToken.Impersonate() || bktInfo.Owner.Equals(bearer.ResolveIssuer(*bd.Gate.BearerToken)) {
return bd.Gate.BearerToken.Marshal()
}
}
}
return nil
}
func handleError(err error) error {
if err == nil {
return nil
}
if errors.Is(err, treepool.ErrNodeNotFound) {
return fmt.Errorf("%w: %s", tree.ErrNodeNotFound, err.Error())
}
if errors.Is(err, treepool.ErrNodeAccessDenied) {
return fmt.Errorf("%w: %s", tree.ErrNodeAccessDenied, err.Error())
}
if errorsFrost.IsTimeoutError(err) {
return fmt.Errorf("%w: %s", tree.ErrGatewayTimeout, err.Error())
}
return err
}