mirror of
https://github.com/ceph/ceph-csi.git
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d02e50aa9b
Existing config maps are now replaced with rados omaps that help store information regarding the requested volume names and the rbd image names backing the same. Further to detect cluster, pool and which image a volume ID refers to, changes to volume ID encoding has been done as per provided design specification in the stateless ceph-csi proposal. Additional changes and updates, - Updated documentation - Updated manifests - Updated Helm chart - Addressed a few csi-test failures Signed-off-by: ShyamsundarR <srangana@redhat.com>
75 lines
1.8 KiB
Go
75 lines
1.8 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 util
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"strings"
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)
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/*
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Mons returns a comma separated MON list from the csi config for the given clusterID
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Expected JSON structure in the passed in config file is,
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[
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{
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"clusterID": "<cluster-id>",
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"monitors":
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[
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"<monitor-value>",
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"<monitor-value>",
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...
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]
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},
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...
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]
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*/
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// clusterInfo strongly typed JSON spec for the above JSON structure
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type clusterInfo struct {
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ClusterID string `json:"clusterID"`
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Monitors []string `json:"monitors"`
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}
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func Mons(pathToConfig, clusterID string) (string, error) {
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var config []clusterInfo
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// #nosec
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content, err := ioutil.ReadFile(pathToConfig)
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if err != nil {
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err = fmt.Errorf("error fetching configuration for cluster ID (%s). (%s)", clusterID, err)
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return "", err
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}
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err = json.Unmarshal(content, &config)
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if err != nil {
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return "", fmt.Errorf("unmarshal failed: %v. raw buffer response: %s",
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err, string(content))
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}
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for _, cluster := range config {
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if cluster.ClusterID == clusterID {
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if len(cluster.Monitors) == 0 {
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return "", fmt.Errorf("empty monitor list for cluster ID (%s) in config", clusterID)
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}
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return strings.Join(cluster.Monitors, ","), nil
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}
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}
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return "", fmt.Errorf("missing configuration for cluster ID (%s)", clusterID)
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}
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