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