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nodeserver.go
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nodeserver.go
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package common
import (
"context"
"os"
"path/filepath"
"strings"
"github.com/container-storage-interface/spec/lib/go/csi"
"github.com/kubernetes-sigs/alibaba-cloud-csi-driver/pkg/utils"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func WrapNodeServerWithValidator(server csi.NodeServer) csi.NodeServer {
return &NodeServerWithValidator{NodeServer: server}
}
type NodeServerWithValidator struct {
csi.NodeServer
}
func (s *NodeServerWithValidator) NodeStageVolume(ctx context.Context, req *csi.NodeStageVolumeRequest) (*csi.NodeStageVolumeResponse, error) {
if len(req.VolumeId) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumeId is required")
}
if req.VolumeCapability == nil {
return nil, status.Error(codes.InvalidArgument, "VolumeCapability is required")
}
if len(req.StagingTargetPath) == 0 {
return nil, status.Error(codes.InvalidArgument, "StagingTargetPath is required")
}
ok, err := filepathContains(utils.KubeletRootDir, req.StagingTargetPath)
if err != nil || !ok {
return nil, status.Errorf(codes.InvalidArgument, "Staging path %q is not a subpath of %s", req.StagingTargetPath, utils.KubeletRootDir)
}
return s.NodeServer.NodeStageVolume(ctx, req)
}
func (s *NodeServerWithValidator) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
if len(req.VolumeId) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumeId is required")
}
if req.VolumeCapability == nil {
return nil, status.Error(codes.InvalidArgument, "VolumeCapability is required")
}
if len(req.TargetPath) == 0 {
return nil, status.Errorf(codes.InvalidArgument, "TargetPath is required")
}
ok, err := filepathContains(utils.KubeletRootDir, req.TargetPath)
if err != nil || !ok {
return nil, status.Errorf(codes.InvalidArgument, "Target path %q is not a subpath of %s", req.TargetPath, utils.KubeletRootDir)
}
return s.NodeServer.NodePublishVolume(ctx, req)
}
func (s *NodeServerWithValidator) NodeUnstageVolume(context context.Context, req *csi.NodeUnstageVolumeRequest) (*csi.NodeUnstageVolumeResponse, error) {
if len(req.VolumeId) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumeId is required")
}
if len(req.StagingTargetPath) == 0 {
return nil, status.Error(codes.InvalidArgument, "StagingTargetPath is required")
}
return s.NodeServer.NodeUnstageVolume(context, req)
}
func (s *NodeServerWithValidator) NodeUnpublishVolume(context context.Context, req *csi.NodeUnpublishVolumeRequest) (*csi.NodeUnpublishVolumeResponse, error) {
if len(req.VolumeId) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumeId is required")
}
if len(req.TargetPath) == 0 {
return nil, status.Error(codes.InvalidArgument, "TargetPath is required")
}
return s.NodeServer.NodeUnpublishVolume(context, req)
}
func (s *NodeServerWithValidator) NodeGetVolumeStats(context context.Context, req *csi.NodeGetVolumeStatsRequest) (*csi.NodeGetVolumeStatsResponse, error) {
if len(req.VolumeId) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumeId is required")
}
if len(req.VolumePath) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumePath is required")
}
return s.NodeServer.NodeGetVolumeStats(context, req)
}
func (s *NodeServerWithValidator) NodeExpandVolume(context context.Context, req *csi.NodeExpandVolumeRequest) (*csi.NodeExpandVolumeResponse, error) {
if len(req.VolumeId) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumeId is required")
}
if len(req.VolumePath) == 0 {
return nil, status.Error(codes.InvalidArgument, "VolumePath is required")
}
return s.NodeServer.NodeExpandVolume(context, req)
}
func filepathContains(basePath, path string) (bool, error) {
relPath, err := filepath.Rel(basePath, path)
if err != nil {
return false, err
}
return !strings.HasPrefix(relPath, ".."+string(os.PathSeparator)), nil
}