mirror of
https://github.com/ceph/ceph-csi.git
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32ea550e3a
Currently CephFs provisioner mounts the ceph filesystem and creates a subdirectory as a part of provisioning the volume. Ceph now supports commands to provision fs subvolumes, hance modify the provisioner to use ceph mgr commands to (de)provision fs subvolumes. Signed-off-by: Poornima G <pgurusid@redhat.com>
116 lines
3.0 KiB
Go
116 lines
3.0 KiB
Go
/*
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Copyright 2018 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 cephfs
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import (
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"fmt"
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"github.com/ceph/ceph-csi/pkg/util"
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)
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const (
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cephUserPrefix = "user-"
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cephEntityClientPrefix = "client."
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)
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type cephEntityCaps struct {
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Mds string `json:"mds"`
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Mon string `json:"mon"`
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Osd string `json:"osd"`
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}
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type cephEntity struct {
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Entity string `json:"entity"`
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Key string `json:"key"`
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Caps cephEntityCaps `json:"caps"`
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}
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func (ent *cephEntity) toCredentials() *util.Credentials {
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return &util.Credentials{
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ID: ent.Entity[len(cephEntityClientPrefix):],
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Key: ent.Key,
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}
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}
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func getCephUserName(volID volumeID) string {
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return cephUserPrefix + string(volID)
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}
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func getSingleCephEntity(args ...string) (*cephEntity, error) {
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var ents []cephEntity
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if err := execCommandJSON(&ents, "ceph", args...); err != nil {
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return nil, err
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}
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if len(ents) != 1 {
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return nil, fmt.Errorf("got unexpected number of entities: expected 1, got %d", len(ents))
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}
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return &ents[0], nil
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}
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func genUserIDs(adminCr *util.Credentials, volID volumeID) (adminID, userID string) {
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return cephEntityClientPrefix + adminCr.ID, cephEntityClientPrefix + getCephUserName(volID)
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}
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func getCephUser(volOptions *volumeOptions, adminCr *util.Credentials, volID volumeID) (*cephEntity, error) {
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adminID, userID := genUserIDs(adminCr, volID)
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return getSingleCephEntity(
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"-m", volOptions.Monitors,
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"-n", adminID,
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"--key="+adminCr.Key,
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"-c", util.CephConfigPath,
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"-f", "json",
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"auth", "get", userID,
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)
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}
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func createCephUser(volOptions *volumeOptions, adminCr *util.Credentials, volID volumeID) (*cephEntity, error) {
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adminID, userID := genUserIDs(adminCr, volID)
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volRootPath, err := getVolumeRootPathCeph(volOptions, adminCr, volID)
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if err != nil {
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return nil, err
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}
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return getSingleCephEntity(
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"-m", volOptions.Monitors,
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"-n", adminID,
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"--key="+adminCr.Key,
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"-c", util.CephConfigPath,
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"-f", "json",
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"auth", "get-or-create", userID,
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// User capabilities
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"mds", fmt.Sprintf("allow rw path=%s", volRootPath),
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"mon", "allow r",
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"osd", fmt.Sprintf("allow rw pool=%s namespace=%s", volOptions.Pool, getVolumeNamespace(volID)),
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)
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}
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func deleteCephUser(volOptions *volumeOptions, adminCr *util.Credentials, volID volumeID) error {
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adminID, userID := genUserIDs(adminCr, volID)
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// TODO: Need to return success if userID is not found
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return execCommandErr("ceph",
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"-m", volOptions.Monitors,
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"-n", adminID,
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"--key="+adminCr.Key,
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"-c", util.CephConfigPath,
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"auth", "rm", userID,
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)
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}
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