2016-08-31 20:39:08 +02:00
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/*
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* Minio Cloud Storage, (C) 2016 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 cmd
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import (
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"net/url"
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"path"
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"time"
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"github.com/minio/cli"
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2016-10-11 09:50:27 +02:00
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"github.com/minio/mc/pkg/console"
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2016-08-31 20:39:08 +02:00
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)
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2016-10-11 09:50:27 +02:00
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var lockFlags = []cli.Flag{
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cli.StringFlag{
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Name: "older-than",
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Usage: "List locks older than given time.",
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Value: "24h",
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},
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cli.BoolFlag{
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Name: "verbose",
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Usage: "Lists more information about locks.",
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},
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2016-08-31 20:39:08 +02:00
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}
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var lockCmd = cli.Command{
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Name: "lock",
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2016-10-11 09:50:27 +02:00
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Usage: "Prints current lock information.",
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2016-08-31 20:39:08 +02:00
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Action: lockControl,
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Flags: append(lockFlags, globalFlags...),
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CustomHelpTemplate: `NAME:
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minio control {{.Name}} - {{.Usage}}
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USAGE:
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minio control {{.Name}} [list|clear] http://localhost:9000/
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2016-08-31 20:39:08 +02:00
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2016-09-02 00:12:49 +02:00
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FLAGS:
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{{range .Flags}}{{.}}
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{{end}}
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EAMPLES:
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1. List all currently active locks from all nodes. Defaults to list locks held longer than 24hrs.
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$ minio control {{.Name}} list http://localhost:9000/
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2. List all currently active locks from all nodes. Request locks from older than 1minute.
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$ minio control {{.Name}} --older-than=1m list http://localhost:9000/
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2016-08-31 20:39:08 +02:00
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`,
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}
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2016-10-11 09:50:27 +02:00
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// printLockStateVerbose - pretty prints systemLockState, additionally this filters out based on a given duration.
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func printLockStateVerbose(lkStateRep map[string]SystemLockState, olderThan time.Duration) {
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console.Println("Duration Server LockType LockAcquired Status LockOrigin Resource")
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for server, lockState := range lkStateRep {
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for _, lockInfo := range lockState.LocksInfoPerObject {
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lockedResource := path.Join(lockInfo.Bucket, lockInfo.Object)
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for _, lockDetails := range lockInfo.LockDetailsOnObject {
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if lockDetails.Duration < olderThan {
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continue
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}
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console.Println(lockDetails.Duration, server,
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lockDetails.LockType, lockDetails.Since,
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lockDetails.Status, lockDetails.LockOrigin,
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lockedResource)
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}
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}
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}
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}
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// printLockState - pretty prints systemLockState, additionally this filters out based on a given duration.
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func printLockState(lkStateRep map[string]SystemLockState, olderThan time.Duration) {
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console.Println("Duration Server LockType Resource")
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for server, lockState := range lkStateRep {
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for _, lockInfo := range lockState.LocksInfoPerObject {
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lockedResource := path.Join(lockInfo.Bucket, lockInfo.Object)
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for _, lockDetails := range lockInfo.LockDetailsOnObject {
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if lockDetails.Duration < olderThan {
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continue
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}
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console.Println(lockDetails.Duration, server,
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lockDetails.LockType, lockedResource)
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}
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}
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}
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}
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2016-08-31 20:39:08 +02:00
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// "minio control lock" entry point.
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func lockControl(c *cli.Context) {
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if !c.Args().Present() && len(c.Args()) != 2 {
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cli.ShowCommandHelpAndExit(c, "lock", 1)
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}
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2016-10-11 09:50:27 +02:00
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parsedURL, err := url.Parse(c.Args().Get(1))
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fatalIf(err, "Unable to parse URL.")
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2016-10-11 09:50:27 +02:00
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// Parse older than string.
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olderThanStr := c.String("older-than")
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olderThan, err := time.ParseDuration(olderThanStr)
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fatalIf(err, "Unable to parse older-than time duration.")
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// Verbose flag.
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verbose := c.Bool("verbose")
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2016-08-31 20:39:08 +02:00
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authCfg := &authConfig{
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accessKey: serverConfig.GetCredential().AccessKeyID,
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secretKey: serverConfig.GetCredential().SecretAccessKey,
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2016-09-30 08:42:37 +02:00
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secureConn: parsedURL.Scheme == "https",
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address: parsedURL.Host,
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path: path.Join(reservedBucket, controlPath),
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loginMethod: "Control.LoginHandler",
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2016-08-31 20:39:08 +02:00
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}
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client := newAuthClient(authCfg)
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2016-10-11 09:50:27 +02:00
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args := &GenericArgs{
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// This is necessary so that the remotes,
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// don't end up sending requests back and forth.
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Remote: true,
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}
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subCommand := c.Args().Get(0)
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switch subCommand {
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case "list":
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lkStateRep := make(map[string]SystemLockState)
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// Request lock info, fetches from all the nodes in the cluster.
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err = client.Call("Control.LockInfo", args, &lkStateRep)
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fatalIf(err, "Unable to fetch system lockInfo.")
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if !verbose {
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printLockState(lkStateRep, olderThan)
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} else {
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printLockStateVerbose(lkStateRep, olderThan)
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}
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case "clear":
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// TODO. Defaults to clearing all locks.
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default:
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fatalIf(errInvalidArgument, "Unsupported lock control operation %s", c.Args().Get(0))
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}
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2016-08-31 20:39:08 +02:00
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}
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