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admin-decom-start.go
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admin-decom-start.go
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"path/filepath"
"github.com/fatih/color"
"github.com/minio/cli"
json "github.com/minio/colorjson"
"github.com/minio/mc/pkg/probe"
"github.com/minio/pkg/console"
)
var adminDecommissionStartCmd = cli.Command{
Name: "start",
Usage: "start decommissioning a pool",
Action: mainAdminDecommissionStart,
OnUsageError: onUsageError,
Before: setGlobalsFromContext,
Flags: globalFlags,
CustomHelpTemplate: `NAME:
{{.HelpName}} - {{.Usage}}
USAGE:
{{.HelpName}} TARGET
FLAGS:
{{range .VisibleFlags}}{{.}}
{{end}}
EXAMPLES:
1. Start decommissioning a pool for removal.
{{.Prompt}} {{.HelpName}} myminio/ http://server{5...8}/disk{1...4}
`,
}
// checkAdminDecommissionStartSyntax - validate all the passed arguments
func checkAdminDecommissionStartSyntax(ctx *cli.Context) {
if len(ctx.Args()) != 2 {
cli.ShowCommandHelpAndExit(ctx, ctx.Command.Name, 1) // last argument is exit code
}
}
// startDecomMessage is container for make bucket success and failure messages.
type startDecomMessage struct {
Status string `json:"status"`
Pool string `json:"pool"`
}
// String colorized construct a string message.
func (s startDecomMessage) String() string {
return console.Colorize("DecomPool", "Decommission started successfully for `"+s.Pool+"`.")
}
// JSON jsonified decom message.
func (s startDecomMessage) JSON() string {
startDecomBytes, e := json.MarshalIndent(s, "", " ")
fatalIf(probe.NewError(e), "Unable to marshal into JSON.")
return string(startDecomBytes)
}
// mainAdminDecommissionStart is the handle for "mc admin decommission start" command.
func mainAdminDecommissionStart(ctx *cli.Context) error {
checkAdminDecommissionStartSyntax(ctx)
// Additional command speific theme customization.
console.SetColor("DecomPool", color.New(color.FgGreen, color.Bold))
// Get the alias parameter from cli
args := ctx.Args()
aliasedURL := args.Get(0)
aliasedURL = filepath.Clean(aliasedURL)
// Create a new MinIO Admin Client
client, err := newAdminClient(aliasedURL)
fatalIf(err, "Unable to initialize admin connection.")
e := client.DecommissionPool(globalContext, args.Get(1))
fatalIf(probe.NewError(e).Trace(args...), "Unable to start decommission on the specified pool")
printMsg(startDecomMessage{
Status: "success",
Pool: args.Get(1),
})
return nil
}