mirror of
https://github.com/ceph/ceph-csi.git
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151 lines
4.7 KiB
Go
151 lines
4.7 KiB
Go
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/*
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Copyright 2022 The Ceph-CSI 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 controller
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import (
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"context"
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"fmt"
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"github.com/ceph/ceph-csi/internal/cephfs"
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"github.com/ceph/ceph-csi/internal/cephfs/store"
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fsutil "github.com/ceph/ceph-csi/internal/cephfs/util"
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csicommon "github.com/ceph/ceph-csi/internal/csi-common"
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"github.com/ceph/ceph-csi/internal/journal"
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"github.com/ceph/ceph-csi/internal/util"
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"github.com/ceph/ceph-csi/internal/util/log"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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)
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// Server struct of CEPH CSI driver with supported methods of CSI controller
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// server spec.
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type Server struct {
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csi.UnimplementedControllerServer
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// backendServer handles the CephFS requests
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backendServer *cephfs.ControllerServer
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}
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// NewControllerServer initialize a controller server for ceph CSI driver.
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func NewControllerServer(d *csicommon.CSIDriver) *Server {
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// global instance of the volume journal, yuck
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store.VolJournal = journal.NewCSIVolumeJournalWithNamespace(cephfs.CSIInstanceID, fsutil.RadosNamespace)
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return &Server{
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backendServer: cephfs.NewControllerServer(d),
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}
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}
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// ControllerGetCapabilities uses the CephFS backendServer to return the
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// capabilities that were set in the Driver.Run() function.
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func (cs *Server) ControllerGetCapabilities(
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ctx context.Context,
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req *csi.ControllerGetCapabilitiesRequest) (*csi.ControllerGetCapabilitiesResponse, error) {
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return cs.backendServer.ControllerGetCapabilities(ctx, req)
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}
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// ValidateVolumeCapabilities checks whether the volume capabilities requested
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// are supported.
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func (cs *Server) ValidateVolumeCapabilities(
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ctx context.Context,
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req *csi.ValidateVolumeCapabilitiesRequest) (*csi.ValidateVolumeCapabilitiesResponse, error) {
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return cs.backendServer.ValidateVolumeCapabilities(ctx, req)
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}
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// CreateVolume creates the backing subvolume and on any error cleans up any
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// created entities.
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func (cs *Server) CreateVolume(
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ctx context.Context,
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req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
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res, err := cs.backendServer.CreateVolume(ctx, req)
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if err != nil {
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return res, fmt.Errorf("failed to create CephFS volume: %w", err)
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}
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backend := res.Volume
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log.DebugLog(ctx, "CephFS volume created: %s", backend.VolumeId)
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secret := req.GetSecrets()
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cr, err := util.NewAdminCredentials(secret)
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if err != nil {
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log.ErrorLog(ctx, "failed to retrieve admin credentials: %v", err)
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return nil, status.Error(codes.InvalidArgument, err.Error())
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}
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defer cr.DeleteCredentials()
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nfsVolume, err := NewNFSVolume(backend.VolumeId)
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if err != nil {
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return nil, status.Error(codes.InvalidArgument, err.Error())
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}
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err = nfsVolume.Connect(cr)
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "failed to connect: %v", err)
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}
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err = nfsVolume.CreateExport(backend)
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "failed to create export: %v", err)
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}
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log.DebugLog(ctx, "published NFS-export: %s", nfsVolume)
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// volume has been exported over NFS, set the "share" parameter to
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// allow mounting
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backend.VolumeContext["share"] = nfsVolume.GetExportPath()
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return &csi.CreateVolumeResponse{Volume: backend}, nil
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}
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// DeleteVolume deletes the volume in backend and its reservation.
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func (cs *Server) DeleteVolume(
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ctx context.Context,
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req *csi.DeleteVolumeRequest) (*csi.DeleteVolumeResponse, error) {
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secret := req.GetSecrets()
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cr, err := util.NewAdminCredentials(secret)
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if err != nil {
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log.ErrorLog(ctx, "failed to retrieve admin credentials: %v", err)
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return nil, status.Error(codes.InvalidArgument, err.Error())
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}
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defer cr.DeleteCredentials()
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nfsVolume, err := NewNFSVolume(req.GetVolumeId())
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if err != nil {
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return nil, status.Error(codes.InvalidArgument, err.Error())
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}
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err = nfsVolume.Connect(cr)
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "failed to connect: %v", err)
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}
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err = nfsVolume.DeleteExport()
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// TODO: if the export does not exist, but the backend does, delete the backend
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "failed to delete export: %v", err)
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}
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log.DebugLog(ctx, "deleted NFS-export: %s", nfsVolume)
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return cs.backendServer.DeleteVolume(ctx, req)
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}
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