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https://github.com/ceph/ceph-csi.git
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8393fbe40b
The sentinel error code had additional fields in the errors, that are used nowhere. This leads to unneccesarily complicated code. This change replaces the sentinel errors in utils with standard errors created with errors.New() and adds a simple JoinErrors() function to be able to combine sentinel errors from different code tiers. Related: #1203 Signed-off-by: Sven Anderson <sven@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 "", fmt.Errorf("%w: fsName (%s) not found in Ceph cluster", util.ErrPoolNotFound, 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 "", fmt.Errorf("%w: fscID (%d) not found in Ceph cluster", util.ErrPoolNotFound, fscID)
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}
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