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minio/cmd/control-heal-main.go

120 lines
3.3 KiB

/*
* Minio Cloud Storage, (C) 2016 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 cmd
import (
"fmt"
"net/rpc"
"net/url"
"path"
"strings"
"github.com/minio/cli"
)
var healCmd = cli.Command{
Name: "heal",
Usage: "To heal objects.",
Action: healControl,
CustomHelpTemplate: `NAME:
minio control {{.Name}} - {{.Usage}}
USAGE:
minio control {{.Name}}
EAMPLES:
1. Heal an object.
$ minio control {{.Name}} http://localhost:9000/songs/classical/western/piano.mp3
2. Heal all objects in a bucket recursively.
$ minio control {{.Name}} http://localhost:9000/songs
3. Heall all objects with a given prefix recursively.
$ minio control {{.Name}} http://localhost:9000/songs/classical/
`,
}
// "minio control heal" entry point.
func healControl(ctx *cli.Context) {
// Parse bucket and object from url.URL.Path
parseBucketObject := func(path string) (bucketName string, objectName string) {
splits := strings.SplitN(path, string(slashSeparator), 3)
switch len(splits) {
case 0, 1:
bucketName = ""
objectName = ""
case 2:
bucketName = splits[1]
objectName = ""
case 3:
bucketName = splits[1]
objectName = splits[2]
}
return bucketName, objectName
}
if len(ctx.Args()) != 1 {
cli.ShowCommandHelpAndExit(ctx, "heal", 1)
}
parsedURL, err := url.Parse(ctx.Args()[0])
fatalIf(err, "Unable to parse URL")
bucketName, objectName := parseBucketObject(parsedURL.Path)
if bucketName == "" {
cli.ShowCommandHelpAndExit(ctx, "heal", 1)
}
client, err := rpc.DialHTTPPath("tcp", parsedURL.Host, path.Join(reservedBucket, controlPath))
fatalIf(err, "Unable to connect to %s", parsedURL.Host)
// If object does not have trailing "/" then it's an object, hence heal it.
if objectName != "" && !strings.HasSuffix(objectName, slashSeparator) {
fmt.Printf("Healing : /%s/%s", bucketName, objectName)
args := &HealObjectArgs{bucketName, objectName}
reply := &HealObjectReply{}
err = client.Call("Control.HealObject", args, reply)
fatalIf(err, "RPC Control.HealObject call failed")
fmt.Println()
return
}
// Recursively list and heal the objects.
prefix := objectName
marker := ""
for {
args := HealListArgs{bucketName, prefix, marker, "", 1000}
reply := &HealListReply{}
err = client.Call("Control.ListObjectsHeal", args, reply)
fatalIf(err, "RPC Heal.ListObjects call failed")
// Heal the objects returned in the ListObjects reply.
for _, obj := range reply.Objects {
fmt.Printf("Healing : /%s/%s", bucketName, obj)
reply := &HealObjectReply{}
err = client.Call("Control.HealObject", HealObjectArgs{bucketName, obj}, reply)
fatalIf(err, "RPC Heal.HealObject call failed")
fmt.Println()
}
if !reply.IsTruncated {
// End of listing.
break
}
marker = reply.NextMarker
}
}