mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-23 13:30:23 +00:00
123 lines
3.3 KiB
Go
123 lines
3.3 KiB
Go
/*
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Copyright 2018 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 cephfs
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"os"
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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() *credentials {
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return &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 getCephUser(adminCr *credentials, volId volumeID) (*cephEntity, error) {
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entityName := cephEntityClientPrefix + getCephUserName(volId)
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var ents []cephEntity
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args := [...]string{
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"auth", "-f", "json", "-c", getCephConfPath(volId), "-n", cephEntityClientPrefix + adminCr.id,
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"get", entityName,
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}
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out, err := execCommand("ceph", args[:]...)
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if err != nil {
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return nil, fmt.Errorf("cephfs: ceph failed with following error: %s\ncephfs: ceph output: %s", err, out)
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}
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// Workaround for output from `ceph auth get`
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// Contains non-json data: "exported keyring for ENTITY\n\n"
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offset := bytes.Index(out, []byte("[{"))
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if json.NewDecoder(bytes.NewReader(out[offset:])).Decode(&ents); err != nil {
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return nil, fmt.Errorf("failed to decode json: %v", 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 for %s: expected 1, got %d", entityName, len(ents))
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}
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return &ents[0], nil
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}
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func createCephUser(volOptions *volumeOptions, adminCr *credentials, volId volumeID) (*cephEntity, error) {
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caps := cephEntityCaps{
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Mds: fmt.Sprintf("allow rw path=%s", getVolumeRootPathCeph(volId)),
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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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var ents []cephEntity
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args := [...]string{
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"auth", "-f", "json", "-c", getCephConfPath(volId), "-n", cephEntityClientPrefix + adminCr.id,
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"get-or-create", cephEntityClientPrefix + getCephUserName(volId),
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"mds", caps.Mds,
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"mon", caps.Mon,
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"osd", caps.Osd,
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}
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if err := execCommandJson(&ents, "ceph", args[:]...); err != nil {
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return nil, fmt.Errorf("error creating ceph user: %v", err)
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}
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return &ents[0], nil
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}
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func deleteCephUser(adminCr *credentials, volId volumeID) error {
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userId := getCephUserName(volId)
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args := [...]string{
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"-c", getCephConfPath(volId), "-n", cephEntityClientPrefix + adminCr.id,
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"auth", "rm", cephEntityClientPrefix + userId,
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}
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if err := execCommandAndValidate("ceph", args[:]...); err != nil {
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return err
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}
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os.Remove(getCephKeyringPath(volId, userId))
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os.Remove(getCephSecretPath(volId, userId))
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return nil
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}
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