forked from TrueCloudLab/frostfs-node
525 lines
12 KiB
Go
525 lines
12 KiB
Go
package tree
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/pilorama"
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cidSDK "github.com/nspcc-dev/neofs-sdk-go/container/id"
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"github.com/nspcc-dev/neofs-sdk-go/eacl"
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netmapSDK "github.com/nspcc-dev/neofs-sdk-go/netmap"
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"go.uber.org/zap"
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)
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// Service represents tree-service capable of working with multiple
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// instances of CRDT trees.
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type Service struct {
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cfg
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replicateCh chan movePair
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closeCh chan struct{}
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}
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// MaxGetSubTreeDepth represents maximum allowed traversal depth in GetSubTree RPC.
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const MaxGetSubTreeDepth = 10
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var _ TreeServiceServer = (*Service)(nil)
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// New creates new tree service instance.
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func New(opts ...Option) *Service {
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var s Service
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for i := range opts {
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opts[i](&s.cfg)
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}
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if s.log == nil {
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s.log = zap.NewNop()
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}
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s.closeCh = make(chan struct{})
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s.replicateCh = make(chan movePair, defaultReplicatorCapacity)
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return &s
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}
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// Start starts the service.
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func (s *Service) Start(ctx context.Context) {
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go s.replicateLoop(ctx)
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}
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// Shutdown shutdowns the service.
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func (s *Service) Shutdown() {
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close(s.closeCh)
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}
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func (s *Service) Add(ctx context.Context, req *AddRequest) (*AddResponse, error) {
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b := req.GetBody()
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var cid cidSDK.ID
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if err := cid.Decode(b.GetContainerId()); err != nil {
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return nil, err
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}
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err := s.verifyClient(req, cid, b.GetBearerToken(), eacl.OperationPut)
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if err != nil {
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return nil, err
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}
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ns, pos, size, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var resp *AddResponse
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var outErr error
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err = s.forEachNode(ctx, ns, func(c TreeServiceClient) bool {
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resp, outErr = c.Add(ctx, req)
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return true
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})
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if err != nil {
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return nil, err
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}
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return resp, outErr
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}
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d := pilorama.CIDDescriptor{CID: cid, Position: pos, Size: size}
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log, err := s.forest.TreeMove(d, b.GetTreeId(), &pilorama.Move{
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Parent: b.GetParentId(),
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Child: pilorama.RootID,
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Meta: pilorama.Meta{Items: protoToMeta(b.GetMeta())},
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})
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if err != nil {
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return nil, err
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}
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s.pushToQueue(cid, b.GetTreeId(), log)
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return &AddResponse{
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Body: &AddResponse_Body{
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NodeId: log.Child,
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},
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}, nil
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}
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func (s *Service) AddByPath(ctx context.Context, req *AddByPathRequest) (*AddByPathResponse, error) {
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b := req.GetBody()
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var cid cidSDK.ID
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if err := cid.Decode(b.GetContainerId()); err != nil {
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return nil, err
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}
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err := s.verifyClient(req, cid, b.GetBearerToken(), eacl.OperationPut)
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if err != nil {
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return nil, err
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}
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ns, pos, size, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var resp *AddByPathResponse
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var outErr error
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err = s.forEachNode(ctx, ns, func(c TreeServiceClient) bool {
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resp, outErr = c.AddByPath(ctx, req)
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return true
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})
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if err != nil {
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return nil, err
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}
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return resp, outErr
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}
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meta := protoToMeta(b.GetMeta())
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attr := b.GetPathAttribute()
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if len(attr) == 0 {
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attr = pilorama.AttributeFilename
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}
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d := pilorama.CIDDescriptor{CID: cid, Position: pos, Size: size}
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logs, err := s.forest.TreeAddByPath(d, b.GetTreeId(), attr, b.GetPath(), meta)
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if err != nil {
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return nil, err
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}
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for i := range logs {
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s.pushToQueue(cid, b.GetTreeId(), &logs[i])
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}
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nodes := make([]uint64, len(logs))
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nodes[0] = logs[len(logs)-1].Child
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for i, l := range logs[:len(logs)-1] {
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nodes[i+1] = l.Child
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}
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return &AddByPathResponse{
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Body: &AddByPathResponse_Body{
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Nodes: nodes,
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},
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}, nil
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}
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func (s *Service) Remove(ctx context.Context, req *RemoveRequest) (*RemoveResponse, error) {
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b := req.GetBody()
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var cid cidSDK.ID
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if err := cid.Decode(b.GetContainerId()); err != nil {
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return nil, err
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}
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err := s.verifyClient(req, cid, b.GetBearerToken(), eacl.OperationPut)
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if err != nil {
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return nil, err
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}
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ns, pos, size, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var resp *RemoveResponse
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var outErr error
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err = s.forEachNode(ctx, ns, func(c TreeServiceClient) bool {
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resp, outErr = c.Remove(ctx, req)
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return true
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})
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if err != nil {
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return nil, err
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}
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return resp, outErr
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}
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if b.GetNodeId() == pilorama.RootID {
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return nil, fmt.Errorf("node with ID %d is root and can't be removed", b.GetNodeId())
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}
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d := pilorama.CIDDescriptor{CID: cid, Position: pos, Size: size}
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log, err := s.forest.TreeMove(d, b.GetTreeId(), &pilorama.Move{
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Parent: pilorama.TrashID,
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Child: b.GetNodeId(),
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})
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if err != nil {
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return nil, err
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}
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s.pushToQueue(cid, b.GetTreeId(), log)
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return new(RemoveResponse), nil
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}
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// Move applies client operation to the specified tree and pushes in queue
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// for replication on other nodes.
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func (s *Service) Move(ctx context.Context, req *MoveRequest) (*MoveResponse, error) {
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b := req.GetBody()
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var cid cidSDK.ID
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if err := cid.Decode(b.GetContainerId()); err != nil {
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return nil, err
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}
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err := s.verifyClient(req, cid, b.GetBearerToken(), eacl.OperationPut)
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if err != nil {
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return nil, err
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}
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ns, pos, size, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var resp *MoveResponse
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var outErr error
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err = s.forEachNode(ctx, ns, func(c TreeServiceClient) bool {
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resp, outErr = c.Move(ctx, req)
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return true
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})
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if err != nil {
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return nil, err
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}
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return resp, outErr
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}
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if b.GetNodeId() == pilorama.RootID {
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return nil, fmt.Errorf("node with ID %d is root and can't be moved", b.GetNodeId())
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}
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d := pilorama.CIDDescriptor{CID: cid, Position: pos, Size: size}
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log, err := s.forest.TreeMove(d, b.GetTreeId(), &pilorama.Move{
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Parent: b.GetParentId(),
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Child: b.GetNodeId(),
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Meta: pilorama.Meta{Items: protoToMeta(b.GetMeta())},
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})
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if err != nil {
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return nil, err
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}
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s.pushToQueue(cid, b.GetTreeId(), log)
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return new(MoveResponse), nil
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}
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func (s *Service) GetNodeByPath(ctx context.Context, req *GetNodeByPathRequest) (*GetNodeByPathResponse, error) {
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b := req.GetBody()
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var cid cidSDK.ID
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if err := cid.Decode(b.GetContainerId()); err != nil {
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return nil, err
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}
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err := s.verifyClient(req, cid, b.GetBearerToken(), eacl.OperationGet)
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if err != nil {
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return nil, err
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}
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ns, _, _, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var resp *GetNodeByPathResponse
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var outErr error
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err = s.forEachNode(ctx, ns, func(c TreeServiceClient) bool {
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resp, outErr = c.GetNodeByPath(ctx, req)
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return true
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})
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if err != nil {
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return nil, err
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}
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return resp, outErr
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}
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attr := b.GetPathAttribute()
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if len(attr) == 0 {
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attr = pilorama.AttributeFilename
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}
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nodes, err := s.forest.TreeGetByPath(cid, b.GetTreeId(), attr, b.GetPath(), b.GetLatestOnly())
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if err != nil {
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return nil, err
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}
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info := make([]*GetNodeByPathResponse_Info, 0, len(nodes))
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for _, node := range nodes {
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m, _, err := s.forest.TreeGetMeta(cid, b.GetTreeId(), node)
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if err != nil {
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return nil, err
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}
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var x GetNodeByPathResponse_Info
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x.NodeId = node
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x.Timestamp = m.Time
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if b.AllAttributes {
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x.Meta = metaToProto(m.Items)
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} else {
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for _, kv := range m.Items {
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for _, attr := range b.GetAttributes() {
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if kv.Key == attr {
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x.Meta = append(x.Meta, &KeyValue{
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Key: kv.Key,
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Value: kv.Value,
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})
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break
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}
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}
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}
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}
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info = append(info, &x)
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}
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return &GetNodeByPathResponse{
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Body: &GetNodeByPathResponse_Body{
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Nodes: info,
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},
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}, nil
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}
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type nodeDepthPair struct {
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nodes []uint64
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depth uint32
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}
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func (s *Service) GetSubTree(req *GetSubTreeRequest, srv TreeService_GetSubTreeServer) error {
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b := req.GetBody()
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if b.GetDepth() > MaxGetSubTreeDepth {
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return fmt.Errorf("too big depth: max=%d, got=%d", MaxGetSubTreeDepth, b.GetDepth())
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}
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var cid cidSDK.ID
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if err := cid.Decode(b.GetContainerId()); err != nil {
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return err
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}
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err := s.verifyClient(req, cid, b.GetBearerToken(), eacl.OperationGet)
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if err != nil {
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return err
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}
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ns, _, _, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var cli TreeService_GetSubTreeClient
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var outErr error
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err = s.forEachNode(srv.Context(), ns, func(c TreeServiceClient) bool {
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cli, outErr = c.GetSubTree(srv.Context(), req)
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return true
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})
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if err != nil {
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return err
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} else if outErr != nil {
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return outErr
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}
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for resp, err := cli.Recv(); err == nil; resp, err = cli.Recv() {
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if err := srv.Send(resp); err != nil {
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return err
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}
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}
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return nil
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}
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queue := []nodeDepthPair{{[]uint64{b.GetRootId()}, 0}}
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for len(queue) != 0 {
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for _, nodeID := range queue[0].nodes {
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m, p, err := s.forest.TreeGetMeta(cid, b.GetTreeId(), nodeID)
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if err != nil {
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return err
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}
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err = srv.Send(&GetSubTreeResponse{
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Body: &GetSubTreeResponse_Body{
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NodeId: nodeID,
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ParentId: p,
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Timestamp: m.Time,
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Meta: metaToProto(m.Items),
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},
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})
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if err != nil {
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return err
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}
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}
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if queue[0].depth < b.GetDepth() {
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for _, nodeID := range queue[0].nodes {
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children, err := s.forest.TreeGetChildren(cid, b.GetTreeId(), nodeID)
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if err != nil {
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return err
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}
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queue = append(queue, nodeDepthPair{children, queue[0].depth + 1})
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}
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}
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queue = queue[1:]
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}
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return nil
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}
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// Apply locally applies operation from the remote node to the tree.
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func (s *Service) Apply(_ context.Context, req *ApplyRequest) (*ApplyResponse, error) {
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err := verifyMessage(req)
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if err != nil {
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return nil, err
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}
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var cid cidSDK.ID
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if err := cid.Decode(req.GetBody().GetContainerId()); err != nil {
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return nil, err
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}
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key := req.GetSignature().GetKey()
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_, pos, size, err := s.getContainerInfo(cid, key)
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if err == errNotInContainer {
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return nil, errors.New("`Apply` request must be signed by a container node")
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}
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op := req.GetBody().GetOperation()
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var meta pilorama.Meta
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if err := meta.FromBytes(op.GetMeta()); err != nil {
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return nil, fmt.Errorf("can't parse meta-information: %w", err)
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}
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d := pilorama.CIDDescriptor{CID: cid, Position: pos, Size: size}
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return nil, s.forest.TreeApply(d, req.GetBody().GetTreeId(), &pilorama.Move{
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Parent: op.GetParentId(),
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Child: op.GetChildId(),
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Meta: meta,
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})
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}
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func (s *Service) GetOpLog(req *GetOpLogRequest, srv TreeService_GetOpLogServer) error {
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b := req.GetBody()
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var cid cidSDK.ID
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if err := cid.Decode(req.GetBody().GetContainerId()); err != nil {
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return err
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}
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ns, _, _, err := s.getContainerInfo(cid, s.rawPub)
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if err == errNotInContainer {
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var cli TreeService_GetOpLogClient
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var outErr error
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err := s.forEachNode(srv.Context(), ns, func(c TreeServiceClient) bool {
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cli, outErr = c.GetOpLog(srv.Context(), req)
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return true
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})
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if err != nil {
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return err
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} else if outErr != nil {
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return outErr
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}
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for resp, err := cli.Recv(); err == nil; resp, err = cli.Recv() {
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if err := srv.Send(resp); err != nil {
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return err
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}
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}
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return nil
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}
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h := b.GetHeight()
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for {
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lm, err := s.forest.TreeGetOpLog(cid, b.GetTreeId(), h)
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if err != nil || lm.Time == 0 {
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return err
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}
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err = srv.Send(&GetOpLogResponse{
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Body: &GetOpLogResponse_Body{
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Operation: &LogMove{
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ParentId: lm.Parent,
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Meta: lm.Meta.Bytes(),
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ChildId: lm.Child,
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},
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},
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})
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if err != nil {
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return err
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}
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h = lm.Time + 1
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}
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}
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func protoToMeta(arr []*KeyValue) []pilorama.KeyValue {
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meta := make([]pilorama.KeyValue, len(arr))
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for i, kv := range arr {
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if kv != nil {
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meta[i].Key = kv.Key
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meta[i].Value = kv.Value
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}
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}
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return meta
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}
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func metaToProto(arr []pilorama.KeyValue) []*KeyValue {
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meta := make([]*KeyValue, len(arr))
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for i, kv := range arr {
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meta[i] = &KeyValue{
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Key: kv.Key,
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Value: kv.Value,
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}
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}
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return meta
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}
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var errNotInContainer = errors.New("node doesn't belong to a container")
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// getContainerInfo returns the list of container nodes, position in the container for the node
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// with pub key and total amount of nodes in all replicas.
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func (s *Service) getContainerInfo(cid cidSDK.ID, pub []byte) ([]netmapSDK.NodeInfo, int, int, error) {
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cntNodes, err := s.getContainerNodes(cid)
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if err != nil {
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return nil, 0, 0, err
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}
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for i, node := range cntNodes {
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if bytes.Equal(node.PublicKey(), pub) {
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return cntNodes, i, len(cntNodes), nil
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}
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}
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return nil, 0, 0, errNotInContainer
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}
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