minio/config-version-main.go

/*
 * Minio Cloud Storage, (C) 2015 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 main

import (
	"encoding/json"

	"github.com/minio/cli"
	"github.com/minio/minio-xl/pkg/probe"
)

// Print config version.
var configVersionCmd = cli.Command{
	Name:   "version",
	Usage:  "Print config version.",
	Action: mainConfigVersion,
	CustomHelpTemplate: `NAME:
   minio config {{.Name}} - {{.Usage}}

USAGE:
   minio config {{.Name}}

`,
}

func mainConfigVersion(ctx *cli.Context) {
	if ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "version", 1) // last argument is exit code
	}

	config, err := loadConfigV2()
	fatalIf(err.Trace(), "Unable to load config", nil)

	// convert interface{} back to its original struct
	newConf := config
	type Version struct {
		Value string `json:"value"`
	}
	if globalJSONFlag {
		tB, e := json.Marshal(
			struct {
				Version Version `json:"version"`
			}{Version: Version{newConf.Version}},
		)
		fatalIf(probe.NewError(e), "Unable to construct version string.", nil)
		Println(string(tB))
		return
	}
	Println(newConf.Version)
}