github.com/alibaba/sealer@v0.8.6-0.20220430115802-37a2bdaa8173/sealer/cmd/version.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cmd
    16  
    17  import (
    18  	"encoding/json"
    19  	"fmt"
    20  
    21  	"github.com/spf13/cobra"
    22  
    23  	"github.com/alibaba/sealer/version"
    24  )
    25  
    26  var shortPrint bool
    27  
    28  var versionCmd = &cobra.Command{
    29  	Use:     "version",
    30  	Short:   "show sealer version",
    31  	Args:    cobra.NoArgs,
    32  	Example: `sealer version`,
    33  	RunE: func(cmd *cobra.Command, args []string) error {
    34  		marshalled, err := json.Marshal(version.Get())
    35  		if err != nil {
    36  			return err
    37  		}
    38  		if shortPrint {
    39  			fmt.Println(version.Get().String())
    40  		} else {
    41  			fmt.Println(string(marshalled))
    42  		}
    43  		return nil
    44  
    45  	},
    46  }
    47  
    48  func init() {
    49  	rootCmd.AddCommand(versionCmd)
    50  	versionCmd.Flags().BoolVar(&shortPrint, "short", false, "If true, print just the version number.")
    51  }