mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-27 07:20:24 +00:00
c9da8469ad
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
198 lines
4.7 KiB
Go
198 lines
4.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cephfs
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import (
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"os/exec"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"k8s.io/klog"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"k8s.io/kubernetes/pkg/util/mount"
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)
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type volumeID string
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func makeVolumeID(volName string) volumeID {
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return volumeID("csi-cephfs-" + volName)
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}
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func execCommand(command string, args ...string) ([]byte, error) {
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klog.V(4).Infof("cephfs: EXEC %s %s", command, args)
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cmd := exec.Command(command, args...) // #nosec
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return cmd.CombinedOutput()
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}
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func execCommandAndValidate(program string, args ...string) error {
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out, err := execCommand(program, args...)
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if err != nil {
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return fmt.Errorf("cephfs: %s failed with following error: %s\ncephfs: %s output: %s", program, err, program, out)
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}
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return nil
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}
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func execCommandJSON(v interface{}, args ...string) error {
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program := "ceph"
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out, err := execCommand(program, args...)
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if err != nil {
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return fmt.Errorf("cephfs: %s failed with following error: %s\ncephfs: %s output: %s", program, err, program, out)
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}
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return json.NewDecoder(bytes.NewReader(out)).Decode(v)
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}
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// Used in isMountPoint()
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var dummyMount = mount.New("")
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func isMountPoint(p string) (bool, error) {
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notMnt, err := dummyMount.IsLikelyNotMountPoint(p)
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if err != nil {
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return false, status.Error(codes.Internal, err.Error())
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}
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return !notMnt, nil
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}
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func storeCephCredentials(volID volumeID, cr *credentials) error {
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keyringData := cephKeyringData{
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UserID: cr.id,
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Key: cr.key,
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VolumeID: volID,
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}
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if err := keyringData.writeToFile(); err != nil {
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return err
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}
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secret := cephSecretData{
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UserID: cr.id,
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Key: cr.key,
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VolumeID: volID,
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}
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err := secret.writeToFile()
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return err
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}
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//
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// Controller service request validation
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//
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func (cs *ControllerServer) validateCreateVolumeRequest(req *csi.CreateVolumeRequest) error {
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
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return fmt.Errorf("invalid CreateVolumeRequest: %v", err)
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}
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if req.GetName() == "" {
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return status.Error(codes.InvalidArgument, "Volume Name cannot be empty")
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}
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reqCaps := req.GetVolumeCapabilities()
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if reqCaps == nil {
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return status.Error(codes.InvalidArgument, "Volume Capabilities cannot be empty")
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}
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for _, cap := range reqCaps {
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if cap.GetBlock() != nil {
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return status.Error(codes.Unimplemented, "block volume not supported")
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}
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}
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return nil
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}
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func (cs *ControllerServer) validateDeleteVolumeRequest() error {
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
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return fmt.Errorf("invalid DeleteVolumeRequest: %v", err)
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}
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return nil
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}
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//
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// Node service request validation
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//
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func validateNodeStageVolumeRequest(req *csi.NodeStageVolumeRequest) error {
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if req.GetVolumeCapability() == nil {
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return errors.New("volume capability missing in request")
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}
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if req.GetVolumeId() == "" {
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return errors.New("volume ID missing in request")
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}
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if req.GetStagingTargetPath() == "" {
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return errors.New("staging target path missing in request")
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}
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if req.GetSecrets() == nil || len(req.GetSecrets()) == 0 {
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return errors.New("stage secrets cannot be nil or empty")
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}
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return nil
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}
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func validateNodeUnstageVolumeRequest(req *csi.NodeUnstageVolumeRequest) error {
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if req.GetVolumeId() == "" {
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return errors.New("volume ID missing in request")
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}
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if req.GetStagingTargetPath() == "" {
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return errors.New("staging target path missing in request")
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}
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return nil
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}
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func validateNodePublishVolumeRequest(req *csi.NodePublishVolumeRequest) error {
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if req.GetVolumeCapability() == nil {
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return errors.New("volume capability missing in request")
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}
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if req.GetVolumeId() == "" {
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return errors.New("volume ID missing in request")
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}
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if req.GetTargetPath() == "" {
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return errors.New("varget path missing in request")
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}
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return nil
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}
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func validateNodeUnpublishVolumeRequest(req *csi.NodeUnpublishVolumeRequest) error {
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if req.GetVolumeId() == "" {
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return errors.New("volume ID missing in request")
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}
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if req.GetTargetPath() == "" {
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return errors.New("target path missing in request")
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}
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return nil
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}
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