mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-20 07:29:50 +00:00
138 lines
3.4 KiB
Go
138 lines
3.4 KiB
Go
/*
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Copyright 2017 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 csicommon
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import (
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"github.com/golang/glog"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"github.com/container-storage-interface/spec/lib/go/csi"
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)
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type CSIDriver struct {
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name string
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nodeID string
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version *csi.Version
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supVers []*csi.Version
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cap []*csi.ControllerServiceCapability
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vc []*csi.VolumeCapability_AccessMode
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}
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// Creates a NewCSIDriver object. Assumes vendor version is equal to driver version &
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// does not support optional driver plugin info manifest field. Refer to CSI spec for more details.
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func NewCSIDriver(name string, v *csi.Version, supVers []*csi.Version, nodeID string) *CSIDriver {
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if name == "" {
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glog.Errorf("Driver name missing")
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return nil
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}
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if nodeID == "" {
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glog.Errorf("NodeID missing")
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return nil
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}
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if v == nil {
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glog.Errorf("Version argument missing")
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return nil
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}
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found := false
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for _, sv := range supVers {
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if sv.GetMajor() == v.GetMajor() && sv.GetMinor() == v.GetMinor() && sv.GetPatch() == v.GetPatch() {
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found = true
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}
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}
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if !found {
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supVers = append(supVers, v)
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}
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driver := CSIDriver{
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name: name,
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version: v,
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supVers: supVers,
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nodeID: nodeID,
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}
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return &driver
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}
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func (d *CSIDriver) CheckVersion(v *csi.Version) error {
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if v == nil {
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return status.Error(codes.InvalidArgument, "Version missing")
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}
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// Assumes always backward compatible
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for _, sv := range d.supVers {
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if v.Major == sv.Major && v.Minor <= sv.Minor {
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return nil
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}
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}
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return status.Error(codes.InvalidArgument, "Unsupported version: "+GetVersionString(v))
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}
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func (d *CSIDriver) ValidateControllerServiceRequest(v *csi.Version, c csi.ControllerServiceCapability_RPC_Type) error {
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if v == nil {
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return status.Error(codes.InvalidArgument, "Version not specified")
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}
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if err := d.CheckVersion(v); err != nil {
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return status.Error(codes.InvalidArgument, "Unsupported version")
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}
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if c == csi.ControllerServiceCapability_RPC_UNKNOWN {
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return nil
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}
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for _, cap := range d.cap {
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if c == cap.GetRpc().GetType() {
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return nil
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}
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}
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return status.Error(codes.InvalidArgument, "Unsupported version: "+GetVersionString(v))
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}
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func (d *CSIDriver) AddControllerServiceCapabilities(cl []csi.ControllerServiceCapability_RPC_Type) {
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var csc []*csi.ControllerServiceCapability
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for _, c := range cl {
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glog.Infof("Enabling controller service capability: %v", c.String())
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csc = append(csc, NewControllerServiceCapability(c))
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}
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d.cap = csc
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return
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}
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func (d *CSIDriver) AddVolumeCapabilityAccessModes(vc []csi.VolumeCapability_AccessMode_Mode) []*csi.VolumeCapability_AccessMode {
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var vca []*csi.VolumeCapability_AccessMode
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for _, c := range vc {
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glog.Infof("Enabling volume access mode: %v", c.String())
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vca = append(vca, NewVolumeCapabilityAccessMode(c))
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}
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d.vc = vca
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return vca
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}
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func (d *CSIDriver) GetVolumeCapabilityAccessModes() []*csi.VolumeCapability_AccessMode {
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return d.vc
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}
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