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Remove code complexity

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Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
This commit is contained in:
Madhu Rajanna 2019-01-17 10:57:55 +05:30
parent de1f099680
commit 8f2941dd47
1 changed files with 40 additions and 27 deletions
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61
pkg/rbd/controllerserver.go
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@ -65,19 +65,26 @@ func (cs *controllerServer) LoadExDataFromMetadataStore() error {
return nil
}
func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
func (cs *controllerServer) validateVolumeReq(req *csi.CreateVolumeRequest) error {
if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
glog.V(3).Infof("invalid create volume req: %v", req)
return nil, err
return err
}
// Check sanity of request Name, Volume Capabilities
if len(req.Name) == 0 {
return nil, status.Error(codes.InvalidArgument, "Volume Name cannot be empty")
return status.Error(codes.InvalidArgument, "Volume Name cannot be empty")
}
if req.VolumeCapabilities == nil {
return nil, status.Error(codes.InvalidArgument, "Volume Capabilities cannot be empty")
return status.Error(codes.InvalidArgument, "Volume Capabilities cannot be empty")
}
return nil
}
func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
if err := cs.validateVolumeReq(req); err != nil {
return nil, err
}
volumeNameMutex.LockKey(req.GetName())
defer volumeNameMutex.UnlockKey(req.GetName())
@ -130,33 +137,16 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
if !found {
// if VolumeContentSource is not nil, this request is for snapshot
if req.VolumeContentSource != nil {
snapshot := req.VolumeContentSource.GetSnapshot()
if snapshot == nil {
return nil, status.Error(codes.InvalidArgument, "Volume Snapshot cannot be empty")
}
snapshotID := snapshot.GetSnapshotId()
if len(snapshotID) == 0 {
return nil, status.Error(codes.InvalidArgument, "Volume Snapshot ID cannot be empty")
}
rbdSnap := &rbdSnapshot{}
if err := cs.MetadataStore.Get(snapshotID, rbdSnap); err != nil {
if err = cs.checkSnapshot(req, rbdVol); err != nil {
return nil, err
}
err = restoreSnapshot(rbdVol, rbdSnap, rbdVol.AdminId, req.GetSecrets())
if err != nil {
return nil, err
}
glog.V(4).Infof("create volume %s from snapshot %s", volName, rbdSnap.SnapName)
} else {
if err := createRBDImage(rbdVol, volSizeGB, rbdVol.AdminId, req.GetSecrets()); err != nil {
err := createRBDImage(rbdVol, volSizeGB, rbdVol.AdminId, req.GetSecrets())
if err != nil {
glog.Warningf("failed to create volume: %v", err)
return nil, err
}
}
glog.V(4).Infof("create volume %s", volName)
}
}
@ -179,6 +169,29 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
}, nil
}
func (cs *controllerServer) checkSnapshot(req *csi.CreateVolumeRequest, rbdVol *rbdVolume) error {
snapshot := req.VolumeContentSource.GetSnapshot()
if snapshot == nil {
return status.Error(codes.InvalidArgument, "Volume Snapshot cannot be empty")
}
snapshotID := snapshot.GetSnapshotId()
if len(snapshotID) == 0 {
return status.Error(codes.InvalidArgument, "Volume Snapshot ID cannot be empty")
}
rbdSnap := &rbdSnapshot{}
if err := cs.MetadataStore.Get(snapshotID, rbdSnap); err != nil {
return err
}
err := restoreSnapshot(rbdVol, rbdSnap, rbdVol.AdminId, req.GetSecrets())
if err != nil {
return err
}
glog.V(4).Infof("create volume %s from snapshot %s", req.GetName(), rbdSnap.SnapName)
return nil
}
func (cs *controllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVolumeRequest) (*csi.DeleteVolumeResponse, error) {
if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
glog.Warningf("invalid delete volume req: %v", req)