mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-20 07:29:50 +00:00
132 lines
3.9 KiB
Go
132 lines
3.9 KiB
Go
/*
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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 core
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import (
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"errors"
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"fmt"
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"strings"
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fsAdmin "github.com/ceph/go-ceph/cephfs/admin"
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)
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const (
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// clusterNameKey cluster Key, set on cephfs subvolume.
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clusterNameKey = "csi.ceph.com/cluster/name"
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)
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// ErrSubVolMetadataNotSupported is returned when set/get/list/remove subvolume metadata options are not supported.
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var ErrSubVolMetadataNotSupported = errors.New("subvolume metadata operations are not supported")
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func (s *subVolumeClient) supportsSubVolMetadata() bool {
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if _, keyPresent := clusterAdditionalInfo[s.clusterID]; !keyPresent {
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clusterAdditionalInfo[s.clusterID] = &localClusterState{}
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}
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return clusterAdditionalInfo[s.clusterID].subVolMetadataState != unsupported
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}
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func (s *subVolumeClient) isUnsupportedSubVolMetadata(err error) bool {
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var invalid fsAdmin.NotImplementedError
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if err != nil && errors.Is(err, &invalid) {
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// In case the error is other than invalid command return error to the caller.
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clusterAdditionalInfo[s.clusterID].subVolMetadataState = unsupported
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return false
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}
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clusterAdditionalInfo[s.clusterID].subVolMetadataState = supported
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return true
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}
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// setMetadata sets custom metadata on the subvolume in a volume as a
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// key-value pair.
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func (s *subVolumeClient) setMetadata(key, value string) error {
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var err error
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if !s.supportsSubVolMetadata() {
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return ErrSubVolMetadataNotSupported
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}
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fsa, err := s.conn.GetFSAdmin()
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if err != nil {
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return err
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}
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err = fsa.SetMetadata(s.FsName, s.SubvolumeGroup, s.VolID, key, value)
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if !s.isUnsupportedSubVolMetadata(err) {
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return ErrSubVolMetadataNotSupported
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}
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return err
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}
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// removeMetadata removes custom metadata set on the subvolume in a volume
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// using the metadata key.
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func (s *subVolumeClient) removeMetadata(key string) error {
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var err error
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if !s.supportsSubVolMetadata() {
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return ErrSubVolMetadataNotSupported
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}
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fsa, err := s.conn.GetFSAdmin()
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if err != nil {
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return err
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}
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err = fsa.RemoveMetadata(s.FsName, s.SubvolumeGroup, s.VolID, key)
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if !s.isUnsupportedSubVolMetadata(err) {
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return ErrSubVolMetadataNotSupported
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}
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return err
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}
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// SetAllMetadata set all the metadata from arg parameters on Ssubvolume.
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func (s *subVolumeClient) SetAllMetadata(parameters map[string]string) error {
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for k, v := range parameters {
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err := s.setMetadata(k, v)
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if err != nil {
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return fmt.Errorf("failed to set metadata key %q, value %q on subvolume %v: %w", k, v, s, err)
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}
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}
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if s.clusterName != "" {
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err := s.setMetadata(clusterNameKey, s.clusterName)
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if err != nil {
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return fmt.Errorf("failed to set metadata key %q, value %q on subvolume %v: %w",
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clusterNameKey, s.clusterName, s, err)
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}
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}
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return nil
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}
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// UnsetAllMetadata unset all the metadata from arg keys on subvolume.
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func (s *subVolumeClient) UnsetAllMetadata(keys []string) error {
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for _, key := range keys {
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err := s.removeMetadata(key)
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// TODO: replace string comparison with errno.
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if err != nil && !strings.Contains(err.Error(), "No such file or directory") {
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return fmt.Errorf("failed to unset metadata key %q on subvolume %v: %w", key, s, err)
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}
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}
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err := s.removeMetadata(clusterNameKey)
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// TODO: replace string comparison with errno.
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if err != nil && !strings.Contains(err.Error(), "No such file or directory") {
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return fmt.Errorf("failed to unset metadata key %q on subvolume %v: %w", clusterNameKey, s, err)
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}
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return nil
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}
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