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32839948ef
The internal/ directory in Go has a special meaning, and indicates that those packages are not meant for external consumption. Ceph-CSI does provide public APIs for other projects to consume. There is no plan to keep the API of the internally used packages stable. Closes: #903 Signed-off-by: Niels de Vos <ndevos@redhat.com>
119 lines
3.3 KiB
Go
119 lines
3.3 KiB
Go
/*
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Copyright 2019 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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"context"
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"fmt"
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"github.com/ceph/ceph-csi/internal/util"
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)
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// MDSMap is a representation of the mds map sub-structure returned by 'ceph fs get'
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type MDSMap struct {
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FilesystemName string `json:"fs_name"`
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}
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// CephFilesystemDetails is a representation of the main json structure returned by 'ceph fs get'
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type CephFilesystemDetails struct {
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ID int64 `json:"id"`
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MDSMap MDSMap `json:"mdsmap"`
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}
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func getFscID(ctx context.Context, monitors string, cr *util.Credentials, fsName string) (int64, error) {
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// ceph fs get myfs --format=json
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// {"mdsmap":{...},"id":2}
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var fsDetails CephFilesystemDetails
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err := execCommandJSON(ctx, &fsDetails,
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"ceph",
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"-m", monitors,
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"--id", cr.ID,
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"--keyfile="+cr.KeyFile,
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"-c", util.CephConfigPath,
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"fs", "get", fsName, "--format=json",
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)
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if err != nil {
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return 0, err
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}
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return fsDetails.ID, nil
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}
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// CephFilesystem is a representation of the json structure returned by 'ceph fs ls'
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type CephFilesystem struct {
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Name string `json:"name"`
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MetadataPool string `json:"metadata_pool"`
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MetadataPoolID int `json:"metadata_pool_id"`
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DataPools []string `json:"data_pools"`
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DataPoolIDs []int `json:"data_pool_ids"`
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}
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func getMetadataPool(ctx context.Context, monitors string, cr *util.Credentials, fsName string) (string, error) {
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// ./tbox ceph fs ls --format=json
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// [{"name":"myfs","metadata_pool":"myfs-metadata","metadata_pool_id":4,...},...]
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var filesystems []CephFilesystem
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err := execCommandJSON(ctx, &filesystems,
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"ceph",
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"-m", monitors,
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"--id", cr.ID,
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"--keyfile="+cr.KeyFile,
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"-c", util.CephConfigPath,
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"fs", "ls", "--format=json",
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)
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if err != nil {
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return "", err
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}
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for _, fs := range filesystems {
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if fs.Name == fsName {
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return fs.MetadataPool, nil
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}
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}
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return "", util.ErrPoolNotFound{Pool: fsName, Err: fmt.Errorf("fsName (%s) not found in Ceph cluster", fsName)}
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}
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// CephFilesystemDump is a representation of the main json structure returned by 'ceph fs dump'
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type CephFilesystemDump struct {
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Filesystems []CephFilesystemDetails `json:"filesystems"`
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}
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func getFsName(ctx context.Context, monitors string, cr *util.Credentials, fscID int64) (string, error) {
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// ./tbox ceph fs dump --format=json
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// JSON: {...,"filesystems":[{"mdsmap":{},"id":<n>},...],...}
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var fsDump CephFilesystemDump
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err := execCommandJSON(ctx, &fsDump,
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"ceph",
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"-m", monitors,
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"--id", cr.ID,
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"--keyfile="+cr.KeyFile,
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"-c", util.CephConfigPath,
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"fs", "dump", "--format=json",
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)
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if err != nil {
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return "", err
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}
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for _, fs := range fsDump.Filesystems {
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if fs.ID == fscID {
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return fs.MDSMap.FilesystemName, nil
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}
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}
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return "", util.ErrPoolNotFound{Pool: string(fscID), Err: fmt.Errorf("fscID (%d) not found in Ceph cluster", fscID)}
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}
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