mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-29 17:50:23 +00:00
145 lines
3.9 KiB
Go
145 lines
3.9 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package cephfs
|
|
|
|
import (
|
|
"context"
|
|
"path"
|
|
|
|
"github.com/golang/glog"
|
|
"google.golang.org/grpc/codes"
|
|
"google.golang.org/grpc/status"
|
|
|
|
"github.com/container-storage-interface/spec/lib/go/csi"
|
|
"github.com/kubernetes-csi/drivers/pkg/csi-common"
|
|
"k8s.io/kubernetes/pkg/util/keymutex"
|
|
"k8s.io/kubernetes/pkg/util/mount"
|
|
)
|
|
|
|
type nodeServer struct {
|
|
*csicommon.DefaultNodeServer
|
|
}
|
|
|
|
var nsMtx = keymutex.NewKeyMutex()
|
|
|
|
func validateNodePublishVolumeRequest(req *csi.NodePublishVolumeRequest) error {
|
|
if req.GetVersion() == nil {
|
|
return status.Error(codes.InvalidArgument, "Version missing in request")
|
|
}
|
|
|
|
if req.GetVolumeCapability() == nil {
|
|
return status.Error(codes.InvalidArgument, "Volume capability missing in request")
|
|
}
|
|
|
|
if req.GetVolumeId() == "" {
|
|
return status.Error(codes.InvalidArgument, "Volume ID missing in request")
|
|
}
|
|
|
|
if req.GetTargetPath() == "" {
|
|
return status.Error(codes.InvalidArgument, "Target path missing in request")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func validateNodeUnpublishVolumeRequest(req *csi.NodeUnpublishVolumeRequest) error {
|
|
if req.GetVersion() == nil {
|
|
return status.Error(codes.InvalidArgument, "Version missing in request")
|
|
}
|
|
|
|
if req.GetVolumeId() == "" {
|
|
return status.Error(codes.InvalidArgument, "Volume ID missing in request")
|
|
}
|
|
|
|
if req.GetTargetPath() == "" {
|
|
return status.Error(codes.InvalidArgument, "Target path missing in request")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
|
|
if err := validateNodePublishVolumeRequest(req); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Configuration
|
|
|
|
volId := req.GetVolumeId()
|
|
targetPath := req.GetTargetPath()
|
|
|
|
if err := tryLock(volId, nsMtx, "NodeServer"); err != nil {
|
|
return nil, err
|
|
}
|
|
defer nsMtx.UnlockKey(volId)
|
|
|
|
if err := createMountPoint(targetPath); err != nil {
|
|
glog.Errorf("failed to create mount point at %s: %v", targetPath, err)
|
|
return nil, status.Error(codes.Internal, err.Error())
|
|
}
|
|
|
|
// Check if the volume is already mounted
|
|
|
|
isMnt, err := isMountPoint(targetPath)
|
|
|
|
if err != nil {
|
|
glog.Errorf("stat failed: %v", err)
|
|
return nil, status.Error(codes.Internal, err.Error())
|
|
}
|
|
|
|
if isMnt {
|
|
return &csi.NodePublishVolumeResponse{}, nil
|
|
}
|
|
|
|
// It's not, do the bind-mount now
|
|
|
|
options := []string{"bind"}
|
|
if req.GetReadonly() {
|
|
options = append(options, "ro")
|
|
}
|
|
|
|
volPath := path.Join(provisionRoot, req.GetVolumeId())
|
|
if err := mount.New("").Mount(volPath, targetPath, "", options); err != nil {
|
|
glog.Errorf("bind-mounting %s to %s failed: %v", volPath, targetPath, err)
|
|
return nil, status.Error(codes.Internal, err.Error())
|
|
}
|
|
|
|
glog.V(4).Infof("cephfs: volume %s successfuly mounted to %s", volPath, targetPath)
|
|
|
|
return &csi.NodePublishVolumeResponse{}, nil
|
|
}
|
|
|
|
func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpublishVolumeRequest) (*csi.NodeUnpublishVolumeResponse, error) {
|
|
if err := validateNodeUnpublishVolumeRequest(req); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
volId := req.GetVolumeId()
|
|
targetPath := req.GetTargetPath()
|
|
|
|
if err := tryLock(volId, nsMtx, "NodeServer"); err != nil {
|
|
return nil, err
|
|
}
|
|
defer nsMtx.UnlockKey(volId)
|
|
|
|
if err := mount.New("").Unmount(targetPath); err != nil {
|
|
return nil, status.Error(codes.Internal, err.Error())
|
|
}
|
|
|
|
return &csi.NodeUnpublishVolumeResponse{}, nil
|
|
}
|