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node.go
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node.go
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// Copyright (c) 2023 ScyllaDB.
package driver
import (
"context"
"fmt"
"github.com/container-storage-interface/spec/lib/go/csi"
"github.com/kubernetes-csi/csi-lib-utils/protosanitizer"
"github.com/scylladb/k8s-local-volume-provisioner/pkg/driver/limit"
"github.com/scylladb/k8s-local-volume-provisioner/pkg/util/slices"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"k8s.io/klog/v2"
)
func (d *driver) NodeGetCapabilities(ctx context.Context, request *csi.NodeGetCapabilitiesRequest) (*csi.NodeGetCapabilitiesResponse, error) {
return &csi.NodeGetCapabilitiesResponse{
Capabilities: nil,
}, nil
}
func (d *driver) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
klog.V(4).InfoS("New request", "server", "node", "function", "NodePublishVolume", "request", protosanitizer.StripSecrets(req))
volumeID := req.GetVolumeId()
targetPath := req.GetTargetPath()
if len(targetPath) == 0 {
return nil, status.Error(codes.InvalidArgument, "Target path not provided")
}
volCap := req.GetVolumeCapability()
if volCap == nil {
return nil, status.Error(codes.InvalidArgument, "Volume capability not provided")
}
err := d.validateVolumeCapabilities([]*csi.VolumeCapability{volCap})
if err != nil {
return nil, status.Error(codes.InvalidArgument, fmt.Sprintf("Volume capability not supported: %s", err))
}
if volCap.GetMount() == nil {
return nil, status.Error(codes.InvalidArgument, "Volume capability access type must be mount")
}
mountOptions := []string{"bind"}
if req.GetReadonly() {
mountOptions = append(mountOptions, "ro")
}
for _, mf := range volCap.GetMount().MountFlags {
mountOptions = append(mountOptions, mf)
}
mountOptions = slices.Unique(mountOptions)
err = d.volumeManager.Mount(volumeID, targetPath, volCap.GetMount().FsType, mountOptions)
if err != nil {
return nil, status.Errorf(codes.Internal, "Failed to publish volume: %v", err)
}
return &csi.NodePublishVolumeResponse{}, nil
}
func (d *driver) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpublishVolumeRequest) (*csi.NodeUnpublishVolumeResponse, error) {
klog.V(4).InfoS("New request", "server", "node", "function", "NodePublishVolume", "request", protosanitizer.StripSecrets(req))
targetPath := req.GetTargetPath()
if len(targetPath) == 0 {
return nil, status.Error(codes.InvalidArgument, "Target path not provided")
}
err := d.volumeManager.Unmount(targetPath)
if err != nil {
return nil, status.Errorf(codes.Internal, "Failed to unmount volume at path %q: %v", targetPath, err)
}
return &csi.NodeUnpublishVolumeResponse{}, nil
}
func (d *driver) NodeGetInfo(ctx context.Context, req *csi.NodeGetInfoRequest) (*csi.NodeGetInfoResponse, error) {
klog.V(4).InfoS("New request", "server", "node", "function", "NodeGetInfo", "request", protosanitizer.StripSecrets(req))
return &csi.NodeGetInfoResponse{
NodeId: d.nodeName,
MaxVolumesPerNode: int64(limit.MaxLimits),
AccessibleTopology: d.getNodeAccessibleTopology(),
}, nil
}