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minio/pkg/donut/management.go

109 lines
2.9 KiB

/*
* Minimalist Object Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package donut
import (
"encoding/json"
"path/filepath"
"github.com/minio/minio/pkg/donut/disk"
"github.com/minio/minio/pkg/iodine"
)
// Heal - heal a donut and fix bad data blocks
func (donut API) Heal() error {
return iodine.New(NotImplemented{Function: "Heal"}, nil)
}
// Info - return info about donut configuration
func (donut API) Info() (nodeDiskMap map[string][]string, err error) {
nodeDiskMap = make(map[string][]string)
for nodeName, node := range donut.nodes {
disks, err := node.ListDisks()
if err != nil {
return nil, iodine.New(err, nil)
}
diskList := make([]string, len(disks))
for diskOrder, disk := range disks {
diskList[diskOrder] = disk.GetPath()
}
nodeDiskMap[nodeName] = diskList
}
return nodeDiskMap, nil
}
// AttachNode - attach node
func (donut API) AttachNode(hostname string, disks []string) error {
if hostname == "" || len(disks) == 0 {
return iodine.New(InvalidArgument{}, nil)
}
node, err := newNode(hostname)
if err != nil {
return iodine.New(err, nil)
}
donut.nodes[hostname] = node
for i, d := range disks {
newDisk, err := disk.New(d)
if err != nil {
return iodine.New(err, nil)
}
if err := newDisk.MakeDir(donut.config.DonutName); err != nil {
return iodine.New(err, nil)
}
if err := node.AttachDisk(newDisk, i); err != nil {
return iodine.New(err, nil)
}
}
return nil
}
// DetachNode - detach node
func (donut API) DetachNode(hostname string) error {
delete(donut.nodes, hostname)
return nil
}
// SaveConfig - save donut configuration
func (donut API) SaveConfig() error {
nodeDiskMap := make(map[string][]string)
for hostname, node := range donut.nodes {
disks, err := node.ListDisks()
if err != nil {
return iodine.New(err, nil)
}
for order, disk := range disks {
donutConfigPath := filepath.Join(donut.config.DonutName, donutConfig)
donutConfigWriter, err := disk.CreateFile(donutConfigPath)
defer donutConfigWriter.Close()
if err != nil {
return iodine.New(err, nil)
}
nodeDiskMap[hostname][order] = disk.GetPath()
jenc := json.NewEncoder(donutConfigWriter)
if err := jenc.Encode(nodeDiskMap); err != nil {
return iodine.New(err, nil)
}
}
}
return nil
}
// LoadConfig - load configuration
func (donut API) LoadConfig() error {
return iodine.New(NotImplemented{Function: "LoadConfig"}, nil)
}