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package driver
import (
"context"
"os"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/container-storage-interface/spec/lib/go/csi"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"k8s.io/utils/mount"
)
type NodeServer struct {
Driver *SeaweedFsDriver
mounter mount.Interface
}
var _ = csi.NodeServer(&NodeServer{})
func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
volumeID := req.GetVolumeId()
// mount the fs here
targetPath := req.GetTargetPath()
glog.V(0).Infof("NodePublishVolume volume %s to %s", volumeID, targetPath)
// Check arguments
if req.GetVolumeCapability() == nil {
return nil, status.Error(codes.InvalidArgument, "Volume capability missing in request")
}
if !isValidVolumeCapabilities(ns.Driver.vcap, []*csi.VolumeCapability{req.GetVolumeCapability()}) {
// return nil, status.Error(codes.InvalidArgument, "Volume capability not supported")
}
if volumeID == "" {
return nil, status.Error(codes.InvalidArgument, "Volume ID missing in request")
}
if targetPath == "" {
return nil, status.Error(codes.InvalidArgument, "Target path missing in request")
}
// check whether it can be mounted
notMnt, err := checkMount(targetPath)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
if !notMnt {
return &csi.NodePublishVolumeResponse{}, nil
}
mo := req.GetVolumeCapability().GetMount().GetMountFlags()
if req.GetReadonly() {
mo = append(mo, "ro")
}
mounter, err := newMounter(volumeID, ns.Driver.filer)
if err != nil {
return nil, err
}
if err := mounter.Mount(targetPath); err != nil {
if os.IsPermission(err) {
return nil, status.Error(codes.PermissionDenied, err.Error())
}
if strings.Contains(err.Error(), "invalid argument") {
return nil, status.Error(codes.InvalidArgument, err.Error())
}
return nil, status.Error(codes.Internal, err.Error())
}
glog.V(0).Infof("volume %s successfully mounted to %s", volumeID, targetPath)
return &csi.NodePublishVolumeResponse{}, nil
}
func (ns *NodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpublishVolumeRequest) (*csi.NodeUnpublishVolumeResponse, error) {
targetPath := req.GetTargetPath()
if targetPath == "" {
return nil, status.Error(codes.InvalidArgument, "Target path missing in request")
}
if err := fuseUnmount(targetPath); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
err := os.Remove(targetPath)
if err != nil && !os.IsNotExist(err) {
return nil, status.Error(codes.Internal, err.Error())
}
return &csi.NodeUnpublishVolumeResponse{}, nil
}
func (ns *NodeServer) NodeGetInfo(ctx context.Context, req *csi.NodeGetInfoRequest) (*csi.NodeGetInfoResponse, error) {
glog.V(3).Infof("Using default NodeGetInfo: nodeID %s", ns.Driver.nodeID)
return &csi.NodeGetInfoResponse{
NodeId: ns.Driver.nodeID,
}, nil
}
func (ns *NodeServer) NodeGetCapabilities(ctx context.Context, req *csi.NodeGetCapabilitiesRequest) (*csi.NodeGetCapabilitiesResponse, error) {
glog.V(3).Infof("Using default NodeGetCapabilities")
return &csi.NodeGetCapabilitiesResponse{
Capabilities: []*csi.NodeServiceCapability{
{
Type: &csi.NodeServiceCapability_Rpc{
Rpc: &csi.NodeServiceCapability_RPC{
// Type: csi.NodeServiceCapability_RPC_STAGE_UNSTAGE_VOLUME,
Type: csi.NodeServiceCapability_RPC_UNKNOWN,
},
},
},
},
}, nil
}
func (ns *NodeServer) NodeGetVolumeStats(ctx context.Context, in *csi.NodeGetVolumeStatsRequest) (*csi.NodeGetVolumeStatsResponse, error) {
return nil, status.Error(codes.Unimplemented, "")
}
func (ns *NodeServer) NodeUnstageVolume(ctx context.Context, req *csi.NodeUnstageVolumeRequest) (*csi.NodeUnstageVolumeResponse, error) {
// Check arguments
if req.GetVolumeId() == "" {
return nil, status.Error(codes.InvalidArgument, "Volume ID missing in request")
}
if req.GetStagingTargetPath() == "" {
return nil, status.Error(codes.InvalidArgument, "Target path missing in request")
}
return &csi.NodeUnstageVolumeResponse{}, nil
}
func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVolumeRequest) (*csi.NodeStageVolumeResponse, error) {
// Check arguments
if req.GetVolumeId() == "" {
return nil, status.Error(codes.InvalidArgument, "Volume ID missing in request")
}
if req.GetStagingTargetPath() == "" {
return nil, status.Error(codes.InvalidArgument, "Target path missing in request")
}
return &csi.NodeStageVolumeResponse{}, nil
}
func (ns *NodeServer) NodeExpandVolume(ctx context.Context, req *csi.NodeExpandVolumeRequest) (*csi.NodeExpandVolumeResponse, error) {
return &csi.NodeExpandVolumeResponse{}, status.Error(codes.Unimplemented, "NodeExpandVolume is not implemented")
}
func checkMount(targetPath string) (bool, error) {
notMnt, err := mount.New("").IsLikelyNotMountPoint(targetPath)
if err != nil {
if os.IsNotExist(err) {
if err = os.MkdirAll(targetPath, 0750); err != nil {
return false, err
}
notMnt = true
} else {
return false, err
}
}
return notMnt, nil
}
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