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admin-config-get.go
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admin-config-get.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 (
"bufio"
"bytes"
"fmt"
"io"
"strings"
"github.com/fatih/color"
"github.com/minio/cli"
json "github.com/minio/colorjson"
"github.com/minio/madmin-go"
"github.com/minio/mc/pkg/probe"
"github.com/minio/pkg/console"
)
var adminConfigGetCmd = cli.Command{
Name: "get",
Usage: "interactively retrieve a config key parameters",
Before: setGlobalsFromContext,
Action: mainAdminConfigGet,
OnUsageError: onUsageError,
Flags: globalFlags,
CustomHelpTemplate: `NAME:
{{.HelpName}} - {{.Usage}}
USAGE:
{{.HelpName}} TARGET
FLAGS:
{{range .VisibleFlags}}{{.}}
{{end}}
EXAMPLES:
The output includes environment variables set on the server. These cannot be overridden from the client.
1. Get the current region setting on MinIO server.
{{.Prompt}} {{.HelpName}} play/ region
region name=us-east-1
2. Get the current notification settings for Webhook target on MinIO server
{{.Prompt}} {{.HelpName}} myminio/ notify_webhook
notify_webhook endpoint="http://localhost:8080" auth_token= queue_limit=10000 queue_dir="/home/events"
3. Get the current compression settings on MinIO server
{{.Prompt}} {{.HelpName}} myminio/ compression
compression extensions=".txt,.csv" mime_types="text/*"
`,
}
type configGetMessage struct {
Status string `json:"status"`
Config []madmin.SubsysConfig `json:"config"`
value []byte
}
// String colorized service status message.
func (u configGetMessage) String() string {
console.SetColor("EnvVar", color.New(color.FgYellow))
bio := bufio.NewReader(bytes.NewReader(u.value))
var lines []string
for {
s, err := bio.ReadString('\n')
// Make lines displaying environment variables bold.
if strings.HasPrefix(s, "# MINIO_") {
s = strings.TrimPrefix(s, "# ")
parts := strings.SplitN(s, "=", 2)
s = fmt.Sprintf("# %s=%s", console.Colorize("EnvVar", parts[0]), parts[1])
lines = append(lines, s)
} else {
lines = append(lines, s)
}
if err == io.EOF {
break
}
fatalIf(probe.NewError(err), "Unable to marshal to string.")
}
return strings.Join(lines, "")
}
// JSON jsonified service status Message message.
func (u configGetMessage) JSON() string {
u.Status = "success"
var err error
u.Config, err = madmin.ParseServerConfigOutput(string(u.value))
fatalIf(probe.NewError(err), "Unable to marshal into JSON.")
statusJSONBytes, e := json.MarshalIndent(u, "", " ")
fatalIf(probe.NewError(e), "Unable to marshal into JSON.")
return string(statusJSONBytes)
}
// checkAdminConfigGetSyntax - validate all the passed arguments
func checkAdminConfigGetSyntax(ctx *cli.Context) {
if !ctx.Args().Present() || len(ctx.Args()) < 1 {
cli.ShowCommandHelpAndExit(ctx, "get", 1) // last argument is exit code
}
}
func mainAdminConfigGet(ctx *cli.Context) error {
checkAdminConfigGetSyntax(ctx)
// Get the alias parameter from cli
args := ctx.Args()
aliasedURL := args.Get(0)
// Create a new MinIO Admin Client
client, err := newAdminClient(aliasedURL)
fatalIf(err, "Unable to initialize admin connection.")
if len(ctx.Args()) == 1 {
// Call get config API
hr, e := client.HelpConfigKV(globalContext, "", "", false)
fatalIf(probe.NewError(e), "Unable to get help for the sub-system")
// Print
printMsg(configHelpMessage{
Value: hr,
envOnly: false,
})
return nil
}
subSys := strings.Join(args.Tail(), " ")
// Call get config API
buf, e := client.GetConfigKV(globalContext, subSys)
fatalIf(probe.NewError(e), "Unable to get server '%s' config", args.Tail())
if globalJSON {
printMsg(configGetMessage{
value: buf,
})
} else {
// Print
printMsg(configGetMessage{
value: buf,
})
}
return nil
}