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103 lines
2.8 KiB
103 lines
2.8 KiB
/*
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* Minimalist Object Storage, (C) 2015 Minio, Inc.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 donut
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import (
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"encoding/json"
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"path/filepath"
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"github.com/minio/minio/pkg/donut/disk"
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"github.com/minio/minio/pkg/iodine"
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)
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// Info - return info about donut configuration
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func (donut API) Info() (nodeDiskMap map[string][]string, err error) {
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nodeDiskMap = make(map[string][]string)
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for nodeName, node := range donut.nodes {
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disks, err := node.ListDisks()
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if err != nil {
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return nil, iodine.New(err, nil)
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}
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diskList := make([]string, len(disks))
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for diskOrder, disk := range disks {
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diskList[diskOrder] = disk.GetPath()
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}
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nodeDiskMap[nodeName] = diskList
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}
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return nodeDiskMap, nil
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}
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// AttachNode - attach node
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func (donut API) AttachNode(hostname string, disks []string) error {
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if hostname == "" || len(disks) == 0 {
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return iodine.New(InvalidArgument{}, nil)
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}
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node, err := newNode(hostname)
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if err != nil {
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return iodine.New(err, nil)
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}
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donut.nodes[hostname] = node
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for i, d := range disks {
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newDisk, err := disk.New(d)
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if err != nil {
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continue
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}
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if err := newDisk.MakeDir(donut.config.DonutName); err != nil {
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return iodine.New(err, nil)
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}
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if err := node.AttachDisk(newDisk, i); err != nil {
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return iodine.New(err, nil)
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}
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}
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return nil
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}
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// DetachNode - detach node
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func (donut API) DetachNode(hostname string) error {
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delete(donut.nodes, hostname)
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return nil
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}
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// SaveConfig - save donut configuration
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func (donut API) SaveConfig() error {
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nodeDiskMap := make(map[string][]string)
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for hostname, node := range donut.nodes {
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disks, err := node.ListDisks()
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if err != nil {
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return iodine.New(err, nil)
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}
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for order, disk := range disks {
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donutConfigPath := filepath.Join(donut.config.DonutName, donutConfig)
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donutConfigWriter, err := disk.CreateFile(donutConfigPath)
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defer donutConfigWriter.Close()
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if err != nil {
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return iodine.New(err, nil)
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}
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nodeDiskMap[hostname][order] = disk.GetPath()
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jenc := json.NewEncoder(donutConfigWriter)
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if err := jenc.Encode(nodeDiskMap); err != nil {
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return iodine.New(err, nil)
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}
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}
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}
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return nil
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}
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// LoadConfig - load configuration
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func (donut API) LoadConfig() error {
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return iodine.New(NotImplemented{Function: "LoadConfig"}, nil)
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}
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