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admin-decom-cancel.go
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admin-decom-cancel.go
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// Copyright (c) 2015-2022 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"
humanize "github.com/dustin/go-humanize"
"github.com/fatih/color"
"github.com/minio/cli"
"github.com/minio/madmin-go"
"github.com/minio/mc/pkg/probe"
"github.com/minio/pkg/console"
)
var adminDecommissionCancelCmd = cli.Command{
Name: "cancel",
Usage: "cancel an ongoing decommissioning of a pool",
Action: mainAdminDecommissionCancel,
OnUsageError: onUsageError,
Before: setGlobalsFromContext,
Flags: globalFlags,
CustomHelpTemplate: `NAME:
{{.HelpName}} - {{.Usage}}
USAGE:
{{.HelpName}} TARGET
FLAGS:
{{range .VisibleFlags}}{{.}}
{{end}}
EXAMPLES:
1. Cancel an ongoing decommissioning of a pool.
{{.Prompt}} {{.HelpName}} myminio/ http://server{5...8}/disk{1...4}
2. List all ongoing decommissioning of pools.
{{.Prompt}} {{.HelpName}} myminio/
`,
}
// checkAdminDecommissionCancelSyntax - validate all the passed arguments
func checkAdminDecommissionCancelSyntax(ctx *cli.Context) {
if len(ctx.Args()) > 2 || len(ctx.Args()) == 0 {
cli.ShowCommandHelpAndExit(ctx, ctx.Command.Name, 1) // last argument is exit code
}
}
// mainAdminDecommissionCancel is the handle for "mc admin decommission cancel" command.
func mainAdminDecommissionCancel(ctx *cli.Context) error {
checkAdminDecommissionCancelSyntax(ctx)
// 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.")
if pool := args.Get(1); pool != "" {
e := client.CancelDecommissionPool(globalContext, pool)
fatalIf(probe.NewError(e).Trace(args...), "Unable to cancel decommissioning, please try again")
return nil
}
poolStatuses, e := client.ListPoolsStatus(globalContext)
fatalIf(probe.NewError(e).Trace(args...), "Unable to get status for all pools")
var newPoolStatuses []madmin.PoolStatus
for _, pool := range poolStatuses {
if pool.Decommission != nil {
if pool.Decommission.StartTime.IsZero() {
continue
}
if pool.Decommission.Complete {
continue
}
}
newPoolStatuses = append(newPoolStatuses, pool)
}
dspOrder := []col{colGreen} // Header
for i := 0; i < len(newPoolStatuses); i++ {
dspOrder = append(dspOrder, colGrey)
}
var printColors []*color.Color
for _, c := range dspOrder {
printColors = append(printColors, getPrintCol(c))
}
tbl := console.NewTable(printColors, []bool{false, false, false, false}, 0)
cellText := make([][]string, len(newPoolStatuses)+1)
cellText[0] = []string{
"ID",
"Pools",
"Capacity",
"Status",
}
for idx, pool := range poolStatuses {
idx++
totalSize := uint64(pool.Decommission.TotalSize)
currentSize := uint64(pool.Decommission.CurrentSize)
capacity := humanize.IBytes(totalSize-currentSize) + " (used) / " + humanize.IBytes(totalSize) + " (total)"
status := ""
if pool.Decommission != nil {
if pool.Decommission.StartTime.IsZero() {
continue
}
if pool.Decommission.Complete {
continue
}
status = "Draining"
}
cellText[idx] = []string{
humanize.Ordinal(pool.ID + 1),
pool.CmdLine,
capacity,
status,
}
}
return tbl.DisplayTable(cellText)
}